Oxygen generator gas path control structure having nitrogen discharge, and oxygen generator gas path control structure integrating nitrogen discharge and pressure equalization

Abstract

An oxygen generator gas path control structure having nitrogen discharge and an oxygen generator gas path control structure integrating nitrogen discharge and pressure equalization. The oxygen generator gas path control structure integrating nitrogen discharge and pressure equalization comprises a backflush valve base (3), a one-way valve (2), a pulse valve base (1), a solenoid valve (4), a pressure equalization valve (5), and a one-way valve base (6).

Description

An oxygen concentrator control gas circuit structure with nitrogen exhaust and an oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization Technical Field

[0001] The present invention relates to the technical field of oxygen concentrators, and in particular to an oxygen concentrator control gas circuit structure with nitrogen exhaust and an oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization. Background Art

[0002] An oxygen concentrator is a type of machine that produces oxygen. It uses air separation technology to separate the various components in the air. Among them, small oxygen concentrators often use the adsorption properties of molecular sieves to separate nitrogen and oxygen in the air, ultimately obtaining high-concentration oxygen.

[0003] The oxygen concentrator needs to continuously backflush the molecular sieve during the oxygen production process. In existing technologies, the backflush interface is often realized through a flow limiting valve, which continuously backflushes oxygen to another sieve drum through the flow limiting valve to discharge nitrogen. However, the nitrogen discharge time cannot be accurately controlled, and there is no pressure equalization function, which will also cause oxygen waste. Summary of the Invention

[0004] The purpose of the present invention is to provide an oxygen concentrator control gas circuit structure with nitrogen exhaust and an oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization, so as to solve the problems existing in the prior art.

[0005] To achieve the above-mentioned objectives, the present invention provides an oxygen concentrator control gas path structure with nitrogen exhaust, comprising a back-blowing valve seat, two one-way valves, a pulse valve seat and two solenoid valves. The back-blowing valve seat and the pulse valve seat are each provided with two passages, and the two one-way valves are installed on the two passages of the pulse valve seat. The back-blowing valve seat and the pulse valve seat are sealed and connected by a one-way valve, and the solenoid valves are respectively installed on the back-blowing valve seat and the pulse valve seat.

[0006] Furthermore, the one-way valve is fixed on the pulse valve seat by screws.

[0007] Furthermore, a solenoid valve is arranged on a side of the blowback valve seat.

[0008] Furthermore, two back-blowing air holes are provided on the side of the back-blowing valve seat, one end of the two back-blowing air holes is respectively connected to the two passages of the back-blowing valve seat, and the other end of the two back-blowing air holes is connected to the solenoid valve.

[0009] Furthermore, a solenoid valve is arranged at the bottom of the pulse valve seat.

[0010] Furthermore, the two passages of the pulse valve seat are connected through a connecting hole, and the connecting hole is arranged between the two passages of the pulse valve seat, wherein one of the pulse valve seat passages is blocked, and two pulse air holes are provided on the pulse valve seat, one end of the pulse air hole is connected to the passage of the pulse valve seat, and the other end of the pulse air hole is connected to the solenoid valve.

[0011] The present invention also provides an oxygen concentrator control air circuit structure integrating nitrogen exhaust and pressure equalization, including the oxygen concentrator control air circuit structure with nitrogen exhaust, and also including: a pressure equalizing valve and a one-way valve seat, a one-way valve seat is arranged on one side of the back-blowing valve seat, two one-way valves are arranged in the one-way valve seat, the one-way valves are correspondingly arranged on one side of the two passages of the back-blowing valve seat, and a solenoid valve and a pressure equalizing valve are arranged on the side of the back-blowing valve seat.

[0012] Furthermore, silicone sealing rings are respectively installed between the pulse valve seat, the back-blowing valve seat and the one-way valve seat.

[0013] Furthermore, two gas mains are provided in the back-blowing valve seat, which are respectively connected to the two air inlets of the back-blowing valve seat, and the gas mains are also respectively connected to two exhaust pipes, which are correspondingly connected to the inlet of the one-way valve.

[0014] Furthermore, the two gas main pipes are respectively connected to one end of two nitrogen exhaust pipes, and the other end of the nitrogen exhaust pipe is arranged on the interface side of the solenoid valve.

[0015] Furthermore, the two gas main pipes are respectively connected to one end of two pressure equalizing pipes, and the other end of the pressure equalizing pipe is arranged on the interface side of the pressure equalizing valve.

[0016] Furthermore, an air injection valve is installed on one side of the two passages of the pulse valve seat.

[0017] The present invention discloses the following technical effects: by arranging solenoid valves on both the backflush valve seat and the pulse valve seat, not only can the nitrogen exhaust time be accurately controlled, the oxygen consumption for nitrogen exhaust can be saved, and the efficiency of molecular sieve oxygen production can be improved; but also oxygen can be output in a pulsed manner through the solenoid valve, which is very practical; the equalizing valve is used for nitrogen exhaust pressure equalization, and the overall layout is reasonable and compact, with higher integration, thereby improving space utilization and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a schematic structural diagram of Example 1;

[0020] Figure 2 is a schematic diagram of the explosion structure of Example 1;

[0021] Figure 3 is a schematic diagram of the pulse valve seat structure of Example 1;

[0022] FIG4 is a schematic diagram of a partial cross-sectional structure of a pulse valve seat in Example 1;

[0023] Figure 5 is a schematic diagram of air flow in accordance with embodiment 1;

[0024] Figure 6 is a schematic structural diagram of Example 2;

[0025] Figure 7 is a schematic diagram of the explosion structure of Example 2;

[0026] Figure 8 is a schematic cross-sectional view of the structure of Example 2;

[0027] Among them, 1. Pulse valve seat; 101. Pulse air hole; 102. Blockage; 103. Connecting hole; 2. One-way valve; 3. Back-blowing valve seat; 301. Back-blowing air hole; 4. Solenoid valve; 5. Equalizing valve; 6. One-way valve seat; 7. Jet valve; 8. Gas main pipe; 9. Exhaust pipe; 10. Nitrogen exhaust pipe; 11. Equalizing pipe. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] The present invention provides a control gas path structure of an oxygen concentrator with nitrogen exhaust as shown in Figures 1 to 3, including a backflush valve seat 3, two one-way valves 2, a pulse valve seat 1 and two solenoid valves 4. The backflush valve seat 3 and the pulse valve seat 1 are both provided with two passages. The left ends of the two passages of the backflush valve seat 3 are connected to two oxygen sieve barrels. The two one-way valves 2 are installed on the two passages of the pulse valve seat 1 and fixed by screws. The backflush valve seat 3 and the pulse valve seat 1 are sealed by the one-way valve 2. The right ends of the two passages of the pulse valve seat 1 are respectively connected to the gas storage tank and the oxygen outlet nozzle. The two solenoid valves 4 are respectively installed on the backflush valve seat 3 and the pulse valve seat 1.

[0032] Specifically, one of the solenoid valves 4 is arranged on the side of the back-blowing valve seat 3, and the output port of the solenoid valve 4 is connected to the two back-blowing air holes 301 on the side of the back-blowing valve seat 3. One end of the two back-blowing air holes 301 is respectively connected to the two passages of the back-blowing valve seat 3. The two back-blowing air holes 301 are connected and controlled by the solenoid valve 4. When the solenoid valve 4 is opened, the oxygen in the oxygen sieve barrel on one side can pass through the solenoid valve 4 and the back-blowing air holes 301 into the oxygen sieve barrel on the other side for back-blowing and nitrogen discharge.

[0033] Specifically, as shown in Figures 4 and 5, another solenoid valve 4 is arranged at the bottom of the pulse valve seat 1; the two passages of the pulse valve seat 1 are connected through a connecting hole 103 between the two passages, and one of the passages of the pulse valve seat 1 is provided with a blockage 102, so that the oxygen entering the pulse valve seat 1 from the two passages can only be discharged from port A, and port A is connected to the gas storage tank, so that oxygen enters the gas storage tank, and two pulse air holes 101 are provided on the pulse valve seat 1, one end of the pulse air hole 101 is connected to the passage of the pulse valve seat 1, and the other end of the pulse air hole 101 is connected to the solenoid valve 4, and port B is connected to the oxygen outlet nozzle. The solenoid valve 4 is connected to the two pulse air holes 101, so that oxygen can be discharged from port B, and the oxygen outlet nozzle discharges oxygen in a pulsed manner by controlling the on-off frequency of the solenoid valve 4.

[0034] Example 2

[0035] The present invention provides an oxygen concentrator control gas path structure that integrates nitrogen exhaust and pressure equalization as shown in Figures 6 and 7, including a pulse valve seat 1, a one-way valve 2, a back-blowing valve seat 3, a solenoid valve 4, a pressure equalizing valve 5, a one-way valve seat 6 and an air jet valve 7. A one-way valve seat 6 is provided on one side of the back-blowing valve seat 3, two one-way valves 2 are provided in the one-way valve seat 6, and two passages are provided on each of the back-blowing valve seat 3 and the pulse valve seat 1. The one-way valve 2 is correspondingly provided on one side of the two passages of the back-blowing valve seat 3, and an air jet valve 7 is installed on one side of the two passages of the pulse valve seat 1. Silicone sealing rings are respectively installed between the pulse valve seat 1, the back-blowing valve seat 3 and the one-way valve seat 6. A solenoid valve 4 and a pressure equalizing valve 5 are provided on the side of the back-blowing valve seat 3.

[0036] As shown in Figure 8, two gas main pipes 8 are provided in the back-blowing valve seat 3, and the gas main pipes 8 are respectively connected to the two air inlets of the back-blowing valve seat 3, and the gas main pipes 8 are also respectively connected to two exhaust pipes 9, and the exhaust pipes 9 are correspondingly connected to the inlet of the one-way valve 2; the oxygen entering from the air inlet of the back-blowing valve seat 3 passes through the gas main pipe 8 and enters the one-way valve 2 from the exhaust pipe 9.

[0037] The two gas main pipes 8 are connected to one end of the two nitrogen exhaust pipes 10 respectively. The other end of the nitrogen exhaust pipe 10 is set on the interface side of the solenoid valve 4. The solenoid valve 4 controls oxygen from the nitrogen exhaust pipe 10 on one side to enter the nitrogen exhaust pipe 10 on the other side to achieve backblowing nitrogen exhaust.

[0038] The two gas main pipes 8 are respectively connected to one end of two pressure equalizing pipes 11 , and the other end of the pressure equalizing pipe 11 is arranged on the interface side of the pressure equalizing valve 5 , and the pressure equalizing function is achieved through the control of the pressure equalizing valve 5 .

[0039] During the use of the oxygen concentrator control gas path structure integrating nitrogen exhaust and pressure equalization, oxygen from the sieve drum enters from an air inlet of the back-blowing valve seat 3, passes through the one-way valve 2 and enters the pulse valve seat 1, and the jet valve 7 is closed by control to realize oxygen pulse output; when back-blowing is required, the solenoid valve 4 is opened, and when pressure equalization is required, the pressure equalizing valve 5 is opened.

[0040] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A control gas circuit structure of an oxygen generator with nitrogen exhaust, characterized in that: The invention comprises a back-blowing valve seat (3), two one-way valves (2), a pulse valve seat (1) and two solenoid valves (4). The back-blowing valve seat (3) and the pulse valve seat (1) are both provided with two passages. The two one-way valves (2) are installed on the two passages of the pulse valve seat (1). The back-blowing valve seat (3) and the pulse valve seat (1) are sealed and connected via the one-way valves (2). The solenoid valves (4) are respectively installed on the back-blowing valve seat (3) and the pulse valve seat (1).

2. The control gas circuit structure of an oxygen concentrator with nitrogen exhaust according to claim 1 is characterized in that: The one-way valve (2) is fixed on the pulse valve seat (1) by means of screws.

3. The control gas circuit structure of an oxygen concentrator with nitrogen exhaust according to claim 1 is characterized in that: A solenoid valve (4) is arranged on the side of the blowback valve seat (3).

4. The control gas circuit structure of an oxygen concentrator with nitrogen exhaust according to claim 3 is characterized in that: Two back-blowing air holes (301) are arranged on the side of the back-blowing valve seat (3), one end of the two back-blowing air holes (301) are respectively connected to the two passages of the back-blowing valve seat (3), and the other end of the two back-blowing air holes (301) is connected to the solenoid valve (4).

5. The control gas circuit structure of an oxygen concentrator with nitrogen exhaust according to claim 1 is characterized in that: A solenoid valve (4) is arranged at the bottom of the pulse valve seat (1).

6. The control gas circuit structure of an oxygen concentrator with nitrogen exhaust according to claim 1 is characterized in that: The two passages of the pulse valve seat (1) are connected via a connecting hole (103), and the connecting hole (103) is arranged between the two passages of the pulse valve seat (1), wherein one passage of the pulse valve seat (1) is provided with a plug (102), and the pulse valve seat (1) is provided with two pulse air holes (101), one end of the pulse air hole (101) is connected to the passage of the pulse valve seat (1), and the other end of the pulse air hole (101) is connected to the solenoid valve (4).

7. An oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization, characterized in that: The invention comprises the control gas path structure of the oxygen generator with nitrogen exhaust as described in any one of claims 1 to 6, and also comprises: a pressure equalizing valve (5) and a one-way valve seat (6), wherein a one-way valve seat (6) is arranged on one side of the back-blowing valve seat (3), two one-way valves (2) are arranged in the one-way valve seat (6), and the one-way valves (2) are arranged on one side of the two passages of the back-blowing valve seat (3) respectively, and a solenoid valve (4) and a pressure equalizing valve (5) are arranged on the side of the back-blowing valve seat (3).

8. The oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization according to claim 7, characterized in that: Silicone sealing rings are respectively installed between the pulse valve seat (1), the back-blowing valve seat (3) and the one-way valve seat (6).

9. The oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization according to claim 7, characterized in that: Two gas main pipes (8) are arranged in the back-blowing valve seat (3), and the gas main pipes (8) are respectively connected to the two air inlets of the back-blowing valve seat (3), and the gas main pipes (8) are also respectively connected to two exhaust pipes (9), and the exhaust pipes (9) are correspondingly connected to the inlet of the one-way valve (2).

10. The oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization according to claim 9, characterized in that: The two gas main pipes (8) are respectively connected to one end of two nitrogen exhaust pipes (10), and the other end of the nitrogen exhaust pipe (10) is arranged on the interface side of the solenoid valve (4).

11. The oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization according to claim 9, characterized in that: The two gas main pipes (8) are respectively connected to one end of two pressure equalizing pipes (11), and the other end of the pressure equalizing pipe (11) is arranged on the interface side of the pressure equalizing valve (5).

12. The oxygen concentrator control gas circuit structure integrating nitrogen exhaust and pressure equalization according to claim 7, characterized in that: An injection valve (7) is installed on one side of the two passages of the pulse valve seat (1).

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