Novel oxygenerator solenoid valve module

Abstract

A novel oxygen generator solenoid valve module relates to the technical field of oxygen generator equipment, an oxygen generation valve group is arranged in a shell, a three-core solenoid valve group is arranged on the side portion of the shell, the three-core solenoid valve group comprises a blowback valve, a breath detection calibration valve and a pulse oxygen release valve, the bottom of the shell is provided with a first adsorption tower interface, a second adsorption tower interface and an air inlet interface, and the air inlet interface is connected with the blowback valve. The first adsorption tower interface, the second adsorption tower interface and the air inlet interface are communicated with the oxygen generation valve group, an oxygen storage tank interface, an oxygen uptake pipe interface and an air guide pipe are arranged on one side of the three-core electromagnetic valve group, and the modularized oxygen generation valve, the blowback valve, the respiration detection sensor and the pulse valve are integrally arranged, so that the pipeline structure in the oxygen generator is reduced, the matching of modules is optimized, and the oxygen generation efficiency is improved. The overall structure is simpler, and the production and assembly difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to a novel solenoid valve module for an oxygen generator, and relates to the technical field of oxygen generator equipment. Background Technology

[0002] Molecular sieve oxygen generators typically employ pressure swing adsorption (PSA) to produce oxygen. They often use a dual-tower configuration, with directional valves controlling the charging and discharging of the two towers, allowing them to alternately adsorb and desorb. To increase oxygen production efficiency, a backflush valve is added to the oxygen outlet of the adsorption tower, enabling timed and quantitative backflush to remove nitrogen, thus providing a continuous supply of oxygen. To further improve the utilization rate of the oxygen output, a pulse oxygen supply method can be used. When the oxygen generator detects human inhalation, it controls the oxygen output solenoid valve to open, releasing oxygen. After a certain period (generally less than the inhalation duration), the output is shut off, completing one pulse oxygen supply cycle.

[0003] Most oxygen concentrators on the market currently require internal connections to oxygen separation valves, backflush valves, pulse oxygen release valves, and respiratory detection sensors; this results in complex internal piping connections, low production and assembly efficiency, and greater inconvenience during subsequent inspection and maintenance. Utility Model Content

[0004] The purpose of this utility model is to address the defects or deficiencies in the existing technology by providing a new type of oxygen concentrator solenoid valve module. By integrating modular oxygen concentrator valve, backflush valve, breathing detection sensor, and pulse valve, the internal piping structure of the oxygen concentrator is reduced, the module coordination is optimized, the overall structure is simpler, and the production and assembly difficulty is reduced.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: it includes an oxygen generating valve assembly 5, a housing 7, and a three-core solenoid valve assembly 8. The oxygen generating valve assembly 5 is disposed inside the housing 7, and the three-core solenoid valve assembly 8 is disposed on the side of the housing 7. The three-core solenoid valve assembly 8 includes a backflush valve, a breathing detection and calibration valve, and a pulse oxygen release valve. The bottom of the housing 7 is provided with a first adsorption tower interface 701, a second adsorption tower interface 702, and an air inlet interface 703. The first adsorption tower interface 701, the second adsorption tower interface 702, and the air inlet interface 703 are connected to the oxygen generating valve assembly 5. The three-core solenoid valve assembly 8 is provided with an oxygen storage tank interface 821, an oxygen inhalation pipe interface 822, and an air guide pipe 823 on one side.

[0006] Furthermore, a drive control board 2 is provided on one side of the oxygen generating valve assembly 5. The drive control board 2 is fixed to the housing 7 by the first fastening screw 1, and a pressure sensor 3 is provided on the drive control board 2. A third sealing ring 4 is provided on the pressure sensor 3.

[0007] Furthermore, a sound-absorbing cotton 10 and a sound-absorbing cover plate 11 are also provided on one side of the shell 7. The sound-absorbing cotton 10 covers the ends of the first adsorption tower interface 701 and the second adsorption tower interface 702, and the sound-absorbing cover plate 11 is fixed on the shell 7 to constrain the sound-absorbing cotton 10.

[0008] Furthermore, the oxygen generating valve assembly 5 includes a first sealing ring 501, a moving valve core 502, a first flat iron plate 503, a spring 504, a winding frame 505, a coil 506, a fixed valve core 507, a fixed valve core sealing ring 508, a first insulating pad 509, and a first U-shaped iron plate 510. The coil 506 is wound around the outside of the winding frame 505. The fixed valve core 507 is riveted to the first U-shaped iron plate 510. The first insulating pad 509 is tightly fitted against the first U-shaped iron plate 510 and sleeved with the fixed valve core 507. The fixed valve core sealing ring 504... 8 is set on the fixed valve core 507 and sleeved on the rear end of the winding frame 505. The moving valve core 502 is set inside the winding frame 505 at the front end of the fixed valve core 507. The spring 504 is set between the moving valve core 502 and the fixed valve core 507. The first flat iron plate 503 is set at the front end of the winding frame 505 and sleeved on the moving valve core 502. The first sealing ring 501 is sleeved on the winding frame 505 and located at the front end of the first flat iron plate 503. The first U-shaped iron plate 510 is fixed to the housing 7 by the third fastening screw 9.

[0009] Furthermore, the first sealing ring 501, the moving valve core 502, the spring 504, the winding skeleton 505, the coil 506, the fixed valve core 507, and the fixed valve core sealing ring 508 are all provided in four sets, each set constituting a solenoid valve. The one closest to the three-core solenoid valve group 8 and connected to the first adsorption tower interface 701 is the first solenoid valve 5-1, the one arranged parallel to the first solenoid valve 5-1 is the third solenoid valve 5-3, and the ones connected to the second adsorption tower interface 702 are the second solenoid valve 5-2 and the fourth solenoid valve 5-4 in sequence.

[0010] Furthermore, the air intake port 703 connects the top of the first solenoid valve 5-1 and the second solenoid valve 5-2.

[0011] Furthermore, the three-core solenoid valve assembly 8 includes a second U-shaped iron plate 801, a second insulating pad 802, a backflush valve fixed valve core 803, a pulse oxygen release valve fixed valve core 804, a backflush valve fixed valve core sealing ring 805, a pulse oxygen release valve fixed valve core sealing ring 806, a backflush valve winding frame 807, a backflush valve coil 808, a pulse oxygen release valve winding frame 809, a pulse oxygen release valve coil 810, a respiration detection calibration valve winding frame 811, a respiration detection calibration valve coil 812, a second flat iron plate 813, and a backflush valve spring 814. The pulse oxygen release valve spring 815, backflush valve moving valve core 816, pulse oxygen release valve moving valve core 817, breath detection and calibration valve moving valve core 818, breath detection and calibration valve spring 819, and second sealing ring 820 are included. The second U-shaped iron plate 801, second insulating pad 802, backflush valve fixed valve core 803, backflush valve fixed valve core sealing ring 805, backflush valve winding frame 807, backflush valve coil 808, second flat iron plate 813, backflush valve spring 814, backflush valve moving valve core 816, and second sealing ring 820 constitute the backflush valve. The second flat iron plate 813 is fixed to the housing 7 by the second fastening screw 6. The backflush valve fixed valve core 803 is riveted to the second U-shaped iron plate 801. The second insulating pad 802 is disposed at the front end of the backflush valve fixed valve core 803 and is in close contact with the second U-shaped iron plate 801. The backflush valve fixed valve core sealing ring 805 is disposed on the backflush valve fixed valve core 803. The backflush valve winding frame 807 is sleeved on the backflush valve fixed valve core 803, with one end abutting against the second U-shaped iron plate 801 and the other end partially passing through the second flat iron plate 813. The backflush valve coil 808 is wound on the... Outside the backflush valve winding frame 807, the backflush valve moving valve core 816 is located inside the backflush valve winding frame 807 at the rear end of the backflush valve fixed valve core 803. The backflush valve spring 814 is located between the backflush valve fixed valve core 803 and the backflush valve moving valve core 816, and the backflush valve moving valve core 816 is connected to the air guide pipe 823. There are three second sealing rings 820. One of them is located in the part of the backflush valve winding frame 807 that passes through the second flat iron plate 813 and is sealed to the housing 7. The second flat iron plate 813 is connected to the second U-shaped iron plate 801.

[0012] The pulse oxygen release valve is composed of a second U-shaped iron plate 801, a second insulating pad 802, a pulse oxygen release valve core 804, a pulse oxygen release valve core sealing ring 806, a pulse oxygen release valve winding frame 809, a pulse oxygen release valve coil 810, a second flat iron plate 813, a pulse oxygen release valve spring 815, a pulse oxygen release valve moving valve core 817, and a second sealing ring 820. The pulse oxygen release valve core 804 is riveted to the second U-shaped iron plate. Similarly, the second insulating pad is set at the front end of the pulse oxygen release valve core, and the pulse oxygen release valve core sealing ring 806 is set on the pulse oxygen release valve core 804 and is connected to the pulse oxygen release valve core 804. Four sets are installed on the pulse oxygen release valve winding frame 809. The pulse oxygen release valve moving valve core 817 is also installed in the pulse oxygen release valve winding frame 809. The pulse oxygen release valve spring 815 is installed between the pulse oxygen release valve fixed valve core 804 and the pulse oxygen release valve moving valve core 817. One end of the pulse oxygen release valve winding frame 809 abuts against the second U-shaped iron plate 801, and the other end partially protrudes through the second flat iron plate 813. The second sealing ring 820 is installed on the part of the pulse oxygen release valve winding frame 809 that protrudes through the second flat iron plate 813 and is sealed to the housing 7. The pulse oxygen release valve moving valve core 817 is connected to the oxygen storage tank interface 821.

[0013] The second U-shaped iron plate 801, the second insulating pad 802, the breathing detection calibration valve winding frame 811, the breathing detection calibration valve coil 812, the second flat iron plate 813, the breathing detection calibration valve moving valve core 818, the breathing detection calibration valve spring 819, and the second sealing ring 820 constitute the breathing detection calibration valve. The rear end of the breathing detection calibration valve winding frame 811 is connected to the second insulating pad 802 and then fixed to the second U-shaped iron plate 801. The breathing detection calibration valve coil 812 is wound around the outside of the breathing detection calibration valve winding frame 811. The front end of the calibration valve winding frame 811 passes through the second flat iron plate 813. The breathing detection calibration valve moving valve core 818 is set inside the breathing detection calibration valve winding frame 811. One end of the breathing detection calibration valve spring 819 is sleeved with the breathing detection calibration valve moving valve core 818, and the other end passes through the second flat iron plate 813 and abuts against the housing 7. The third of the second sealing rings 820 is set at the front end of the breathing detection calibration valve winding frame 811 at the part passing through the second flat iron plate 813, and the breathing detection calibration valve moving valve core 818 is connected to the oxygen inhalation tube interface 822.

[0014] Furthermore, the gas guide pipe 823 is provided with a first adsorption tower oxygen outlet port 8231 and a second adsorption tower oxygen outlet port 8232.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by integrating modular oxygen generating valve, backflush valve, breathing detection sensor and pulse valve, the internal pipeline structure of the oxygen generator is reduced, the cooperation of modules is optimized, the overall structure is simpler, and the difficulty of production and assembly is reduced. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded structural diagram of the present invention;

[0019] Figure 3 yes Figure 1 Bottom view;

[0020] Figure 4 yes Figure 1 Top view;

[0021] Figure 5 yes Figure 3 Sectional view along the AA direction;

[0022] Figure 6 yes Figure 3 Sectional view along the BB direction;

[0023] Figure 7 yes Figure 3 Cross-sectional view along the CC direction;

[0024] Figure 8 yes Figure 4 Sectional view along the DD direction;

[0025] Figure 9 yes Figure 4 Cross-sectional view of the EE direction;

[0026] Figure 10 yes Figure 6 Schematic diagram of nitrogen removal process;

[0027] Figure 11 yes Figure 7 Schematic diagram of nitrogen removal process;

[0028] Figure 12 This is an exploded structural diagram of the oxygen generating valve assembly 5 in this utility model;

[0029] Figure 13 This is an exploded structural diagram of the three-core solenoid valve assembly 8 in this utility model.

[0030] Explanation of reference numerals in the attached drawings: 1. First fastening screw; 2. Drive control board; 3. Pressure sensor; 4. Third sealing ring; 5. Oxygen generating valve assembly; 6. Second fastening screw; 7. Housing; 8. Three-core solenoid valve assembly; 9. Third fastening screw; 10. Noise-absorbing cotton; 11. Noise-absorbing cover plate; 12. Fourth fastening screw; 501. First sealing ring; 502. Moving valve core; 503. First flat iron plate; 504. Spring; 505. Winding frame; 506. Coil; 507. Fixed valve core; 508. Fixed valve core sealing ring; 509. First U-shaped iron plate; 510. First adsorption tower interface; 701. Second adsorption tower interface; 702. Air inlet; 703. Second U-shaped iron plate; 801. Second insulating pad; 802. Backflush valve fixed valve core; 803. Pulse... 804, backflush valve core sealing ring, 805, pulse oxygen release valve core sealing ring, 806, backflush valve winding frame, 807, backflush valve coil, 808, pulse oxygen release valve winding frame, 809, pulse oxygen release valve coil, 810, breath detection calibration valve winding frame, 811, breath detection calibration valve coil, 812, second flat iron plate, 813, backflush valve spring, 814, pulse oxygen release valve spring, 815, backflush valve moving valve core, 816, pulse oxygen release valve moving valve core, 817, breath detection calibration valve moving valve core, 818, breath detection calibration valve spring, 819, second sealing ring, 820, first solenoid valve 5-1, second solenoid valve 5-2, third solenoid valve 5-3, fourth solenoid valve 5-4. Detailed Implementation

[0031] See Figures 1-13 As shown, the technical solution adopted in this specific embodiment is as follows: it includes an oxygen generating valve group 5, a housing 7, and a three-core solenoid valve group 8. The oxygen generating valve group 5 is located inside the housing 7, and the three-core solenoid valve group 8 is located on the side of the housing 7. In this embodiment, the main components are the oxygen generating valve group and the three-core solenoid valve group. In this illustration, the oxygen generating valve group uses a four-sole solenoid valve structure connected to two adsorption towers for oxygen generation. Each pair of solenoid valves forms a group connected to one adsorption tower. The oxygen generating valve group controls the opening and closing of the solenoid valves to control the oxygen generation and desorption / nitrogen removal processes of the adsorption towers. The three-core solenoid valve group is connected to the oxygen storage tank, the oxygen inhalation pipe, and the oxygen outlet pipe of the adsorption tower for backflushing, zero-point calibration, and pulse oxygen supply. The overall structure is simple, with no excessive internal piping connections. At the same time, the modular structure not only facilitates production and assembly but also facilitates subsequent maintenance.

[0032] Specifically, the three-core solenoid valve group 8 includes a backflush valve, a breathing detection and calibration valve, and a pulse oxygen release valve. In this embodiment, the three-core solenoid valve group is divided into a backflush valve, a breathing detection and calibration valve, and a pulse oxygen release valve according to its functions. The backflush valve is used to control the flow of oxygen to backflush the adsorption tower, accelerate the desorption and nitrogen removal speed, and thus improve the oxygen production efficiency. The breathing detection and calibration valve automatically performs zero-point calibration by switching the solenoid valve to improve the sensitivity and stability of pulse oxygen intake.

[0033] The bottom of the housing 7 is provided with a first adsorption tower interface 701, a second adsorption tower interface 702, and an air inlet 703. The first adsorption tower interface 701, the second adsorption tower interface 702, and the air inlet 703 are connected to the oxygen generating valve group 5. The two adsorption tower interfaces are connected to the two adsorption towers, and the air inlet is connected to the air compressor to provide fresh air.

[0034] The three-core solenoid valve assembly 8 is equipped with an oxygen storage tank interface 821, an oxygen inhalation pipe interface 822, and a gas guide pipe 823 on one side. It is connected to the oxygen storage tank through the oxygen storage tank interface, connected to the oxygen inhalation pipe of the oxygen inhalation mask through the oxygen inhalation pipe interface, and connected to the oxygen outlet of the adsorption tower through the gas guide pipe.

[0035] More specifically, a drive control board 2 is provided on one side of the oxygen generating valve assembly 5. The drive control board 2 is fixed to the housing 7 by the first fastening screw 1, and a pressure sensor 3 is provided on the drive control board 2. A third sealing ring 4 is provided on the pressure sensor 3. The drive control board is electrically connected to the oxygen generating valve assembly and the three-core solenoid valve assembly to control the on / off state of all solenoid valves. At the same time, a pressure sensor is provided on the drive control board to detect the pressure value when the user breathes, so that the drive control board can control each solenoid valve accordingly based on the measured value.

[0036] More specifically, the housing 7 is also provided with a sound-absorbing cotton 10 and a sound-absorbing cover plate 11 on one side. The sound-absorbing cotton 10 covers the ends of the first adsorption tower interface 701 and the second adsorption tower interface 702. The sound-absorbing cover plate 11 is fixed to the housing 7 to constrain the sound-absorbing cotton 10. By setting the sound-absorbing cotton, the noise during exhaust can be reduced. The sound-absorbing cover plate is provided with several vent holes to facilitate exhaust. The sound-absorbing cover plate is fastened to the housing by the fourth fastening screw 12. When the sound-absorbing cotton is dirty after a period of use, the sound-absorbing cover plate can be opened for replacement.

[0037] More specifically, the oxygen generating valve assembly 5 includes a first sealing ring 501, a moving valve core 502, a first flat iron plate 503, a spring 504, a winding frame 505, a coil 506, a fixed valve core 507, a fixed valve core sealing ring 508, a first insulating pad 509, and a first U-shaped iron plate 510. The coil 506 is wound around the outside of the winding frame 505. The fixed valve core 507 is riveted to the first U-shaped iron plate 510. The first insulating pad 509 is tightly fitted against the first U-shaped iron plate 510 and sleeved with the fixed valve core 507. The fixed valve core sealing ring 508 is disposed on the fixed valve core 507 and is connected to it. A fixed valve core 507 is sleeved on the rear end of the winding frame 505. A movable valve core 502 is disposed inside the winding frame 505 at the front end of the fixed valve core 507. A spring 504 is disposed between the movable valve core 502 and the fixed valve core 507. A first flat iron plate 503 is disposed at the front end of the winding frame 505 and sleeved with the movable valve core 502. A first sealing ring 501 is sleeved on the winding frame 505 and located at the front end of the first flat iron plate 503. A first U-shaped iron plate 510 is fixed to the housing 7 by a third fastening screw 9. The first sealing ring 501, movable valve core 502, spring 504, and winding frame 505 are described above. 05. Four sets of coils 506, fixed valve cores 507, and fixed valve core sealing rings 508 are provided, each set constituting a solenoid valve. The solenoid valve closest to the three-core solenoid valve group 8 and connected to the first adsorption tower interface 701 is the first solenoid valve 5-1. The solenoid valve parallel to the first solenoid valve 5-1 is the third solenoid valve 5-3. The solenoid valves connected to the second adsorption tower interface 702 are the second solenoid valve 5-2 and the fourth solenoid valve 5-4, respectively. In this embodiment, the oxygen generating valve group consists of four solenoid valves, where the fixed valve core is a fixed component, and the moving valve core is the solenoid valve switching and moving component, controlled by a drive. The plate controls its stroke. The solenoid valves in the same group open and close in sequence according to the gas filling and nitrogen venting control sequence. The solenoid valves in different groups open and close in the opposite sequence, so as to realize the alternating gas filling and nitrogen venting of the adsorption tower. In actual assembly, the fixed valve core is first riveted to the first U-shaped iron plate, the first insulating gasket is sleeved on the fixed valve core and tightly attached to the first U-shaped iron plate, the fixed valve core sealing ring is sleeved on the fixed valve core and installed in the winding frame, the coil is wound on the frame, and finally the first flat iron plate is sealed. The first sealing ring is set on the frame and located on the outside of the first flat iron plate, and is sealed during the assembly of the shell.

[0038] More specifically, the air inlet 703 connects the top of the first solenoid valve 5-1 and the second solenoid valve 5-2. The air inlet is an L-shaped connecting pipe located at the bottom of the two adsorption tower interfaces, connecting the first solenoid valve and the second solenoid valve to provide fresh external air.

[0039] More specifically, the three-core solenoid valve assembly 8 includes a second U-shaped iron plate 801, a second insulating pad 802, a backflush valve fixed valve core 803, a pulse oxygen release valve fixed valve core 804, a backflush valve fixed valve core sealing ring 805, a pulse oxygen release valve fixed valve core sealing ring 806, a backflush valve winding frame 807, a backflush valve coil 808, a pulse oxygen release valve winding frame 809, a pulse oxygen release valve coil 810, a respiration detection calibration valve winding frame 811, a respiration detection calibration valve coil 812, a second flat iron plate 813, and a backflush valve spring. Spring 814, pulse oxygen release valve spring 815, backflush valve moving valve core 816, pulse oxygen release valve moving valve core 817, breath detection calibration valve moving valve core 818, breath detection calibration valve spring 819, second sealing ring 820, wherein, second U-shaped iron plate 801, second insulating pad 802, backflush valve fixed valve core 803, backflush valve fixed valve core sealing ring 805, backflush valve winding skeleton 807, backflush valve coil 808, second flat iron plate 813, backflush valve spring 814, backflush valve moving valve core 816, second sealing ring 820. The backflush valve is constructed by: a second flat iron plate 813 fixed to the housing 7 by a second fastening screw 6; a backflush valve fixed valve core 803 riveted to a second U-shaped iron plate 801; a second insulating pad 802 positioned at the front end of the backflush valve fixed valve core 803 and in close contact with the second U-shaped iron plate 801; a backflush valve fixed valve core sealing ring 805 positioned on the backflush valve fixed valve core 803; and a backflush valve winding skeleton 807 sleeved on the backflush valve fixed valve core 803, with one end abutting against the second U-shaped iron plate 801 and the other end passing through the second flat iron plate 813. The coil 808 is wound around the outside of the backflush valve winding frame 807. The backflush valve moving valve core 816 is located inside the backflush valve winding frame 807 at the rear end of the backflush valve fixed valve core 803. The backflush valve spring 814 is located between the backflush valve fixed valve core 803 and the backflush valve moving valve core 816, and the backflush valve moving valve core 816 is connected to the air guide pipe 823. There are three second sealing rings 820. One of them is located in the part of the backflush valve winding frame 807 that passes through the second flat iron plate 813. The second flat iron plate 813 is connected to the second U-shaped iron plate 801.

[0040] The pulse oxygen release valve is composed of a second U-shaped iron plate 801, a second insulating pad 802, a pulse oxygen release valve core 804, a pulse oxygen release valve core sealing ring 806, a pulse oxygen release valve winding frame 809, a pulse oxygen release valve coil 810, a second flat iron plate 813, a pulse oxygen release valve spring 815, a pulse oxygen release valve moving valve core 817, and a second sealing ring 820. The pulse oxygen release valve core 804 is riveted to the second U-shaped iron plate. Similarly, the second insulating pad is positioned at the front end of the pulse oxygen release valve core. The pulse oxygen release valve core sealing ring 806 is positioned on the pulse oxygen release valve core 804 and is sleeved on the pulse oxygen release valve winding frame 809. The moving valve core 817 is also located inside the pulse oxygen release valve winding frame 809. The pulse oxygen release valve spring 815 is located between the pulse oxygen release fixed valve core 804 and the pulse oxygen release valve moving valve core 817. One end of the pulse oxygen release valve winding frame 809 abuts against the second U-shaped iron plate 801, and the other end extends through the second flat iron plate 813. The second sealing ring 820 is located on the part of the pulse oxygen release valve winding frame 809 that extends through the second flat iron plate 813 and is sealed to the housing 7. The pulse oxygen release valve moving valve core 817 is connected to the oxygen storage tank interface 821. A valve port is also provided on the housing corresponding to the pulse oxygen release valve moving valve core, so that gas can flow after the pulse oxygen release valve moving valve core is opened.

[0041] The second U-shaped iron plate 801, the second insulating pad 802, the breathing detection calibration valve winding frame 811, the breathing detection calibration valve coil 812, the second flat iron plate 813, the breathing detection calibration valve moving valve core 818, the breathing detection calibration valve spring 819, and the second sealing ring 820 constitute the breathing detection calibration valve. The rear end of the breathing detection calibration valve winding frame 811 is connected to the second insulating pad 802 and then fixed to the second U-shaped iron plate 801. The breathing detection calibration valve coil 812 is wound around the breathing detection calibration valve winding frame 811, and the front end of the breathing detection calibration valve winding frame 811 passes through the second U-shaped iron plate 801. The second flat iron plate 813 is used to house the breathing detection calibration valve moving valve core 818, which is located inside the breathing detection calibration valve winding frame 811. One end of the breathing detection calibration valve spring 819 is sleeved with the breathing detection calibration valve moving valve core 818, and the other end passes through the second flat iron plate 813 and abuts against the housing 7. The third of the second sealing rings 820 is located at the front end of the breathing detection calibration valve winding frame 811, passing through the second flat iron plate 813. The breathing detection calibration valve moving valve core 818 is connected to the oxygen inhalation tube interface 822, and the other end is connected to the natural environment through the valve port set on the breathing detection calibration valve winding frame 811.

[0042] In this embodiment, the three-core solenoid valve group consists of three sets of solenoid valves. The backflush valve and the pulse oxygen release valve have the same structure but different functions. The breathing detection and calibration valve is set between the two. The backflush valve can control the oxygen exchange between the two adsorption towers. For example, some of the oxygen produced when the first adsorption tower produces oxygen enters the second adsorption tower and backflushes out the nitrogen inside, or some of the oxygen produced when the second adsorption tower produces oxygen enters the first adsorption tower and backflushes out the nitrogen inside. By producing oxygen while backflushing, the desorption and nitrogen removal speed of the adsorption tower can be accelerated, thereby improving the oxygen production efficiency.

[0043] More specifically, the gas guide pipe 823 is provided with a first adsorption tower oxygen outlet port 8231 and a second adsorption tower oxygen outlet port 8232. By providing two oxygen outlet ports on the gas guide pipe, it is convenient to connect and ventilate with the two adsorption towers.

[0044] The working principle of this utility model is as follows: The device is connected to two adsorption towers: a first adsorption tower and a second adsorption tower. The air inlet of the first adsorption tower is connected to the first adsorption tower connection port 701, and the air inlet of the second adsorption tower is connected to the second adsorption tower connection port 702. The oxygen outlets of the two adsorption towers are connected to the oxygen outlet ports 8231 and 8232 of the first and second adsorption towers, respectively. The oxygen storage tank port 821 is connected to an oxygen tank, and the oxygen inhalation pipe port 822 is connected to the oxygen inhalation pipe of the oxygen mask. The air inlet port 703 is connected to an air compressor to provide compressed air. At the start of operation, the oxygen generating valve group 5 begins operation, controlling the first solenoid valve 5-1 to open and the second solenoid valve 5-2 to close via the drive control board 2. Compressed air enters the first solenoid valve 5-1 through the air inlet port, and then enters the first adsorption tower through the first adsorption tower port 701, causing the first adsorption tower to enter the adsorption and oxygen generation stage. At this time, the second adsorption tower enters the depressurization and desorption stage. In the process of nitrogen gas generation, the drive control board 2 controls the fourth solenoid valve 5-4 to open and the third solenoid valve 5-3 to close, allowing nitrogen gas to pass through the fourth solenoid valve 5-4 and the sound-absorbing cotton 10 before passing through the sound-absorbing cover 11 and being discharged into the natural environment. When the second adsorption tower is filled with oxygen, the oxygen generating valve group 5 controls the second solenoid valve 5-2 to open and the first solenoid valve 5-1 to close via the drive control board 2. Compressed air enters the second solenoid valve 5-2 through the air inlet, and then enters the second adsorption tower through the second adsorption tower interface 702 connected to the external pipeline, allowing the second adsorption tower to enter the adsorption oxygen generation stage. At this time, the first adsorption tower enters the depressurization desorption process. The drive control board 2 controls the third solenoid valve 5-3 to open and the fourth solenoid valve 5-4 to close, allowing nitrogen gas to pass through the third solenoid valve 5-3 and the sound-absorbing cotton 10 before passing through the sound-absorbing cover 11 and being discharged into the natural environment. By controlling the oxygen generating valve group 5 via the drive control board 2, the first adsorption tower and the second adsorption tower alternately enter the adsorption and desorption process, thereby separating a continuous supply of high-concentration oxygen.

[0045] The three-core solenoid valve assembly 8 integrates a backflush valve, a breathing detection and calibration valve, and a pulse oxygen release valve. When the first adsorption tower is filled with gas to produce oxygen, the second adsorption tower enters desorption and nitrogen removal mode. A portion of the oxygen separated from the first adsorption tower enters the gas guide pipe 823 through the oxygen outlet port 8231 of the first adsorption tower, while the backflush valve's moving valve core 816 opens, allowing oxygen to enter the second adsorption tower from the oxygen outlet port 8232, and blowing out the nitrogen in the second adsorption tower in the reverse direction. When the second adsorption tower is filled with gas to produce oxygen, the first adsorption tower enters desorption and nitrogen removal mode. A portion of the oxygen separated from the second adsorption tower enters the gas guide pipe 823 through the oxygen outlet port 8232 of the second adsorption tower and enters the first adsorption tower from the oxygen outlet port 8231 of the first adsorption tower, blowing out the nitrogen in the first adsorption tower in the reverse direction. By controlling the backflush valve, the oxygen production efficiency is improved by alternating these processes.

[0046] The respiratory detection calibration valve is mainly used for respiratory detection and zero-point calibration. When the external oxygen tubing is connected to the oxygen tubing interface 822 and the human body inhales, the respiratory detection calibration valve coil 812 is de-energized. Under the action of the respiratory detection calibration valve spring 819, the moving valve core 818 closes the air connection port, and the valve connected to the oxygen tubing interface 822 opens. The pressure sensor 3 detects the pressure of the human body's inhalation. At this time, the pressure value of the human body's inhalation is lower than the zero-point pressure value. Then, the drive control board 2 controls the pulse oxygen release valve to open and release oxygen, and oxygen enters the human body through the tubing. When calibration is required... At zero point, the breathing detection calibration valve coil 12 is energized under the control of the drive control board 2. Under the action of the magnetic field, the breathing detection calibration valve moving valve core 818 closes the valve connected to the oxygen inhalation tube interface 822, and the valve at the natural environment connection port opens. At this time, the pressure sensor 3 detects the air pressure value of the natural environment and uses the detected air pressure value as the zero point value. Since the air pressure of the natural environment fluctuates greatly with changes in ambient temperature and altitude, it is necessary to automatically perform zero point calibration by switching the breathing detection calibration valve to improve the sensitivity and stability of pulse oxygen inhalation.

[0047] When the pressure sensor 3 detects human inhalation, it energizes the pulse oxygen release valve coil 810 via the drive control board 2. Under the action of the magnetic field, the pulse oxygen release valve moving valve core 817 opens the valve port, and oxygen enters the human body from the oxygen storage tank interface through the valve port and the oxygen inhalation tube connected to the oxygen inhalation tube interface 822. After being open for a certain period of time (generally less than the inhalation time), the oxygen output is turned off to prepare for the next cycle of pulse oxygen supply.

[0048] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A novel solenoid valve module for an oxygen generator, characterized by: It includes oxygen production valve group (5), shell (7), three core electromagnetic valve group (8), oxygen production valve group (5) is arranged in the shell (7) inside, three core electromagnetic valve group (8) is arranged in the shell (7) side, three core electromagnetic valve group (8) includes back flushing valve, breath detection calibration valve, pulse oxygen release valve, the bottom of shell (7) is provided with first adsorption tower interface (701), second adsorption tower interface (702), air inlet interface (703), first adsorption tower interface (701), second adsorption tower interface (702), air inlet interface (703) are connected with oxygen production valve group (5), and three core electromagnetic valve group (8) one side is provided with oxygen storage tank interface (821), oxygen inhalation pipe interface (822), gas guide pipe (823).

2. The solenoid valve module of claim 1, wherein: The oxygen production valve group (5) is provided with a drive control board (2) on one side, the drive control board (2) is fixed on the shell (7) by the first fastening screw (1), and the drive control board (2) is provided with a pressure sensor (3), and the pressure sensor (3) is provided with a third sealing ring (4).

3. The electromagnetic valve module of claim 1, wherein: The shell (7) is further provided with sound-absorbing cotton (10) and sound-absorbing cover plate (11) on one side, the sound-absorbing cotton (10) covers the ends of the first adsorption tower interface (701) and the second adsorption tower interface (702), and the sound-absorbing cover plate (11) is fixed on the shell (7) to constrain the sound-absorbing cotton (10).

4. The electromagnetic valve module of claim 1, wherein: The oxygen production valve group (5) includes a first sealing ring (501), a moving valve core (502), a first flat iron plate (503), a spring (504), a wire winding framework (505), a coil (506), a fixed valve core (507), a fixed valve core sealing ring (508), a first insulating pad (509) and a first U-shaped iron plate (510), the coil (506) is wound outside the wire winding framework (505), the fixed valve core (507) is riveted on the first U-shaped iron plate (510), the first insulating pad (509) is tightly attached to the first U-shaped iron plate (510) and the fixed valve core (507) is sleeved, the fixed valve core sealing ring (508) is arranged on the fixed valve core (507) and is sleeved on the rear end of the wire winding framework (505), the moving valve core (502) is arranged in the wire winding framework (505) front end of fixed valve core (507), the spring (504) is arranged between the moving valve core (502) and the fixed valve core (507), the first flat iron plate (503) is arranged in the wire winding framework (505) front end and the moving valve core (502) is sleeved, the first sealing ring (501) is sleeved on the wire winding framework (505) and located in the front end of the first flat iron plate (503), and the first U-shaped iron plate (510) is fixed on the shell (7) by the third fastening screw (9).

5. The solenoid valve module of claim 4, wherein: The first sealing ring (501), the moving valve core (502), the spring (504), the winding framework (505), the coil (506), the fixed valve core (507) and the fixed valve core sealing ring (508) are provided with four groups, each group constitutes an electromagnetic valve, the first electromagnetic valve (5-1) is connected with the first adsorption tower interface (701) and is communicated with the three-core electromagnetic valve group (8) close to the first electromagnetic valve (5-1), the third electromagnetic valve (5-3) is arranged in parallel with the first electromagnetic valve (5-1), the second electromagnetic valve (5-2) and the fourth electromagnetic valve (5-4) are communicated with the second adsorption tower interface (702) in sequence.

6. The new type of oxygen generator electromagnetic valve module according to claim 1, characterized in that: The air inlet interface (703) is communicated with the top of the first electromagnetic valve (5-1) and the second electromagnetic valve (5-2).

7. The electromagnetic valve module of claim 1, wherein: The three-core electromagnetic valve group (8) comprises a second U-shaped iron plate (801), a second insulating pad (802), a back flushing valve fixed valve core (803), a pulse oxygen releasing valve fixed valve core (804), a back flushing valve fixed valve core sealing ring (805), a pulse oxygen releasing valve fixed valve core sealing ring (806), a back flushing valve winding frame (807), a back flushing valve coil (808), a pulse oxygen releasing valve winding frame (809), a pulse oxygen releasing valve coil (810), a breath detection calibration valve winding frame (811), a breath detection calibration valve coil (812), a second flat iron plate (813), a back flushing valve spring (814), a pulse oxygen releasing valve spring (815), a back flushing valve moving valve core (816), a pulse oxygen releasing valve moving valve core (817), a breath detection calibration valve moving valve core (818), a breath detection calibration valve spring (819), a second sealing ring (820), wherein the second U-shaped iron plate (801), the second insulating pad (802), the back flushing valve fixed valve core (803), the back flushing valve fixed valve core sealing ring (805), the back flushing valve winding frame (807), the back flushing valve coil (808), the second flat iron plate (813), the back flushing valve spring (814), the back flushing valve moving valve core (816) and the second sealing ring (820) constitute a back flushing valve, the second flat iron plate (813) is fixed on the shell (7) through a second fastening screw (6), the back flushing valve fixed valve core (803) is riveted on the second U-shaped iron plate (801), the second insulating pad (802) is arranged at the front end of the back flushing valve fixed valve core (803) and closely attached to the second U-shaped iron plate (801), the back flushing valve fixed valve core sealing ring (805) is arranged on the back flushing valve fixed valve core (803), the back flushing valve winding frame (807) is sleeved on the back flushing valve fixed valve core (803), one end abuts against the second U-shaped iron plate (801) and the other end partially penetrates through the second flat iron plate (813), the back flushing valve coil (808) is wound outside the back flushing valve winding frame (807), the back flushing valve moving valve core (816) is arranged in the back flushing valve winding frame (807) and located at the rear end of the back flushing valve fixed valve core (803), the back flushing valve spring (814) is arranged between the back flushing valve fixed valve core (803) and the back flushing valve moving valve core (816), the back flushing valve moving valve core (816) is connected with the air guide pipe (823), and the second sealing ring (820) is provided with three, one of which is arranged in sealing connection between the part, where the back flushing valve winding frame (807) penetrates through the second flat iron plate (813), and the shell (7), and the second flat iron plate (813) is connected with the second U-shaped iron plate (801). The second U-shaped iron plate (801), the second insulating pad (802), the pulse oxygen release fixed valve core (804), the pulse oxygen release valve fixed core sealing ring (806), the pulse oxygen release valve winding frame (809), the pulse oxygen release valve coil (810), the second flat iron plate (813), the pulse oxygen release valve spring (815), the pulse oxygen release valve moving core (817), and the second sealing ring (820) constitute a pulse oxygen release valve. The pulse oxygen release fixed valve core (804) is riveted on the second U-shaped iron plate. The second insulating pad is arranged at the front end of the pulse oxygen release fixed valve core. The pulse oxygen release valve fixed core sealing ring (806) is arranged on the pulse oxygen release fixed valve core (804) and is sleeved on the pulse oxygen release valve winding frame (809). The pulse oxygen release valve moving core (817) is also arranged in the pulse oxygen release valve winding frame (809). The pulse oxygen release valve spring (815) is arranged between the pulse oxygen release fixed valve core (804) and the pulse oxygen release valve moving core (817). One end of the pulse oxygen release valve winding frame (809) abuts against the second U-shaped iron plate (801), and the other end partially penetrates the second flat iron plate (813). The second sealing ring (820) is arranged on the part of the pulse oxygen release valve winding frame (809) penetrating the second flat iron plate (813) and is sealingly connected with the shell (7). The pulse oxygen release valve moving core (817) is connected with the oxygen storage tank interface (821) in communication. The second U-shaped iron plate (801), the second insulating pad (802), the breathing detection calibration valve winding frame (811), the breathing detection calibration valve coil (812), the second flat iron plate (813), the breathing detection calibration valve moving core (818), the breathing detection calibration valve spring (819), and the second sealing ring (820) constitute a breathing detection calibration valve. The rear end of the breathing detection calibration valve winding frame (811) is connected with the second insulating pad (802) and is then fixed on the second U-shaped iron plate (801). The breathing detection calibration valve coil (812) is wound outside the breathing detection calibration valve winding frame (811). The front end of the breathing detection calibration valve winding frame (811) partially penetrates the second flat iron plate (813). The breathing detection calibration valve moving core (818) is arranged in the breathing detection calibration valve winding frame (811). One end of the breathing detection calibration valve spring (819) is sleeved with the breathing detection calibration valve moving core (818), and the other end penetrates the second flat iron plate (813) and abuts against the shell (7). The third second sealing ring (820) is arranged on the part of the breathing detection calibration valve winding frame (811) penetrating the second flat iron plate (813). The breathing detection calibration valve moving core (818) is connected with the oxygen inhalation pipe interface (822) in communication.

8. The new type of oxygen generator electromagnetic valve module according to claim 1, characterized in that: The air guide pipe (823) is provided with a first adsorption tower oxygen outlet interface (8231) and a second adsorption tower oxygen outlet interface (8232).

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