Integrated valve group and oxygen generation system

Abstract

The utility model relates to the technical field of oxygen generation, in particular to an integrated valve group and an oxygen generation system. An integrated valve group is used in an oxygen generation system and comprises a first valve seat. The first channel and the second channel are used for conveying oxygen generated by the molecular sieve cylinder into the oxygen storage device; the throttling channel is provided with a throttling piece and is used for communicating the two molecular sieve cylinders; one end of the first voltage-sharing channel is connected with the first channel, and the other end is connected with the first on-off control piece; one end of the second voltage-sharing channel is connected with the second channel, the other end of the second voltage-sharing channel is connected with the first on-off control part, and the first on-off control part is used for controlling connection or disconnection of the first voltage-sharing channel and the second voltage-sharing channel; the first end of the air supply channel is connected with the oxygen storage device; one end of the oxygen spraying channel is connected with the user side; the second end of the detection channel is connected with the respiration sensor; and the second on-off control piece selectively controls the communication between the air supply channel and the oxygen spraying channel or the communication between the oxygen spraying channel and the detection channel. According to the integrated valve group, the space is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen production, in particular to an integrated valve group and an oxygen production system. Background Art

[0002] Oxygen concentrators are machines that provide users with high-concentration oxygen to assist breathing. One type is the molecular sieve oxygen concentrator, which occupies most of the oxygen concentrator market due to its ease of use, safety and reliability. Among them, the oxygen production principle of the molecular sieve oxygen generator is as follows: the compressor concentrates the raw air to produce high-pressure air, and transports the high-pressure air to the molecular sieve cylinder, in which the molecular sieve has a stronger adsorption capacity for nitrogen at a higher pressure, so it can adsorb nitrogen, and the remaining unadsorbed oxygen is used as product gas, and the molecular sieve can be reduced at a lower pressure to release nitrogen; in order to improve the oxygen production efficiency, two molecular sieve cylinders are usually provided in the oxygen generator, one is in an adsorption state when oxygen is produced, and the other is in a desorption state. During the reduction process of the molecular sieve, in order to make the molecular sieve reduction more thorough, the molecular sieve cylinder that is adsorbing oxygen will continue to transport part of the oxygen to the desorbing molecular sieve cylinder through the throttle hole; at the end of oxygen production, the molecular sieve cylinder that has just produced oxygen will also transport oxygen to another molecular sieve cylinder for pressure equalization, and the two molecular sieve cylinders produce oxygen alternately, store the product gas in the gas storage tank, and then output the oxygen in the gas storage tank to the oxygen demand end through the oxygen supply pipeline.

[0003] In order to control the oxygen production process and the timing of outputting oxygen to users, many valve bodies are provided in the oxygen generator, such as the valve body that controls the compressor to deliver high-pressure air to the molecular sieve cylinder, the valve body that controls the discharge of nitrogen from the molecular sieve cylinder, the valve body that controls the throttling and pressure equalization of the two molecular sieve cylinders, and the valve body that controls the delivery of oxygen to users. The provision of a large number of valve bodies will increase the size of the oxygen generator and make the pipeline connection complicated, which is not conducive to the miniaturization of the oxygen generator.

[0004] Therefore, how to integrate parts of the multiple valve bodies has become one of the directions for improving the oxygen generator. Utility Model Content

[0005] In view of the above deficiencies in the prior art, the utility model provides an integrated valve group and an oxygen production system, wherein the integrated valve group includes a channel connecting a molecular sieve cartridge and an oxygen storage device to transport oxygen, and also includes a channel between two molecular sieve cartridges for throttling and pressure equalization, and further integrates a channel that follows the user's breathing and provides oxygen to the user, thereby overcoming the technical difficulties of numerous valve bodies and complex pipelines in the prior art oxygen generator, reducing space, and making the layout of internal components of the oxygen production system reasonable.

[0006] The technical solution adopted by the utility model to solve the technical problem is:

[0007] On the one hand, the utility model provides an integrated valve group for use in an oxygen production system, wherein a controller is provided in the oxygen production system, and the controller is connected to the integrated valve group by wire or wirelessly for controlling the on / off state of the integrated valve group; the integrated valve group comprises:

[0008] a first valve seat; and

[0009] A first channel and a second channel are opened in and / or arranged on the first valve seat, wherein the first ends of the first channel and the second channel are connected to the first molecular sieve cartridge and the second molecular sieve cartridge respectively, and the second ends are connected to the oxygen storage device, so as to transport the oxygen produced by the molecular sieve cartridge to the oxygen storage device; and

[0010] a throttling channel, which is opened in the first valve seat and / or arranged on the first valve seat, wherein a throttling member is arranged, and the throttling channel is used to connect the two molecular sieve cartridges; and

[0011] A first on-off control member is fixedly connected or detachably connected to the first valve seat, and the first on-off control member at least includes a first air inlet and outlet hole and a second air inlet and outlet hole; and

[0012] A first pressure equalizing channel is provided in the first valve seat, one end of the first pressure equalizing channel is connected to the first channel, and the other end of the first pressure equalizing channel is connected to the first air inlet and outlet holes; and

[0013] a second pressure equalizing channel is provided in the first valve seat, one end of which is connected to the second channel, and the other end of which is connected to the second air inlet and outlet holes; the first on-off control element receives a signal from a controller to control the connection or disconnection between the first pressure equalizing channel and the second pressure equalizing channel; and

[0014] an air supply channel, which is opened in the first valve seat and / or arranged on the first valve seat, and a first end of the air supply channel is connected to the oxygen storage device; and

[0015] an oxygen injection channel, which is opened in the first valve seat and / or arranged on the first valve seat, and one end of the oxygen injection channel is connected to the user end; and

[0016] A detection channel, a second end of which is connected to a breathing sensor, wherein the breathing sensor is connected to the controller by wire or wirelessly and is used to detect the user's breathing state; and

[0017] The second on-off control member is fixedly connected or detachably connected to the first valve seat. The second on-off control member is provided with at least three air ports, which receive signals from the controller and selectively control the connection between the air supply channel and the oxygen injection channel or the connection between the oxygen injection channel and the detection channel.

[0018] Furthermore, the second on-off control component is provided with an air port A, an air port B and an air port C, the second end of the air supply channel is connected to the air port A, the other end of the oxygen injection channel is connected to the air port B, and the first end of the detection channel is connected to the air port C; when the air port A is connected to the air port B, it is used to deliver oxygen to the user, and when the air port B is connected to the air port C, the user's breathing state is detected.

[0019] Furthermore, a safety valve is provided on the detection channel.

[0020] Furthermore, a first cavity and a second cavity are provided in the first valve seat, the second end of the first channel is connected to the first cavity, the second end of the second channel is connected to the second cavity, and a one-way valve is provided in both cavities to allow the oxygen in the molecular sieve cartridge to be transported to the oxygen storage device in one direction.

[0021] Furthermore, one end of the throttling channel is connected to the first pressure equalizing channel, and the other end is connected to the head end of the second cavity.

[0022] Furthermore, it also includes a second valve seat, which is fixedly connected or detachably connected to the first valve seat, and an air storage cavity is provided in the second valve seat, the ends of the first cavity and the second cavity are connected to the air storage cavity, and the first end of the air supply channel is connected to the air storage cavity.

[0023] Furthermore, the oxygen storage device includes the gas storage chamber and the gas storage tank, and the integrated valve group also includes a third channel, which is opened in the second valve seat and / or arranged on the second valve seat, and one end of the third channel is connected to the gas storage chamber, and the other end is connected to the gas storage tank.

[0024] Furthermore, sealing rings are provided between the one-way valve and the first cavity, between the one-way valve and the second cavity, and between the first valve seat and the second valve seat.

[0025] On the other hand, the utility model also provides an oxygen production system, comprising:

[0026] A compressor for generating compressed air;

[0027] The inlet and outlet valves, in response to the signal of the controller, alternately deliver compressed air to the first molecular sieve cartridge and the second molecular sieve cartridge, and control the nitrogen discharge from the first molecular sieve cartridge and the second molecular sieve cartridge;

[0028] The first molecular sieve cylinder and the second molecular sieve cylinder are both filled with molecular sieves for adsorbing nitrogen to produce oxygen;

[0029] An oxygen storage device for storing oxygen;

[0030] A controller connected to the compressor and the intake and exhaust valves via wired or wireless communication;

[0031] The oxygen production system also includes the integrated valve group as described above, through which the oxygen produced by the first molecular sieve cartridge and the second molecular sieve cartridge is transported to the oxygen storage device, and the first molecular sieve cartridge and the second molecular sieve cartridge are connected through a throttling channel in the integrated valve group to transport oxygen therebetween, and the integrated valve group controls the pressure equalization between the first molecular sieve cartridge and the second molecular sieve cartridge in response to a signal from a controller, and controls the delivery of oxygen to a user.

[0032] The utility model has the following beneficial effects:

[0033] The integrated valve group provided by the utility model combines many structures in the oxygen production system, including the first channel and the second channel for conveying oxygen to the oxygen storage device, as well as the throttle hole, the pressure equalizing valve, and the oxygen injection valve. Multiple functions can be realized by only one integrated valve group, which can reduce pipeline connections, reduce occupied space, and make the internal structure distribution of the oxygen production system more concentrated, thereby facilitating the miniaturization of the oxygen production system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional diagram of the first valve seat in the embodiment provided by the utility model;

[0035] Figure 2 yes Figure 1 A top view of

[0036] Figure 3 It is a top view of the first valve seat and the second valve seat after being assembled in the embodiment provided by the utility model;

[0037] Figure 4 is along Figure 3 Sectional view along line AA;

[0038] Figure 5 is along Figure 3 Sectional view along the midline BB;

[0039] Figure 6 is along Figure 3 Sectional view of the mid-CC line;

[0040] Figure 7 This is a front view of the integrated valve group in the embodiment provided by the utility model;

[0041] Figure 8 It is a three-dimensional diagram of the integrated valve group in the embodiment provided by the utility model;

[0042] Fig. 9 It is a structural schematic diagram of the oxygen production system in the embodiment provided by the utility model.

[0043] In the figure, 1, first valve seat; 2, first channel; 3, second channel; 4, first pressure equalizing channel; 5, second pressure equalizing channel; 6, throttling channel; 7, throttling element; 8, air supply channel; 9, oxygen injection channel; 10, detection channel; 11, safety valve; 12, first cavity; 13, second cavity; 14, one-way valve; 15, second valve seat; 16, air storage cavity; 17, third channel; 18, sealing ring; 19, first on-off control element; 20, second on-off control element; 21, compressor; 22, inlet and exhaust valves; 23, muffler; 24, first molecular sieve cartridge; 25, second molecular sieve cartridge; 26, throttling hole; 27, pressure equalizing valve; 28, oxygen storage device; 29, oxygen injection valve. DETAILED DESCRIPTION

[0044] The utility model is further described below in conjunction with the accompanying drawings.

[0045] Example:

[0046] like Figures 1 to 8 As shown, an integrated valve group described in the utility model is used in an oxygen production system, wherein a controller is provided in the oxygen production system, and the controller is connected to the integrated valve group by wire or wireless connection to control the on-off state of the integrated valve group; the integrated valve group comprises a first valve seat 1; and a first channel 2 and a second channel 3, which are opened in the first valve seat 1 and / or arranged on the first valve seat 1. In a specific embodiment, as Figure 1 , Figure 4 As shown, the first channel 2 and the second channel 3 are partially arranged on the first valve seat 1, and partially opened in the first valve seat 1; the first ends of the first channel 2 and the second channel 3 are respectively connected to the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25, and the second ends are connected to the oxygen storage 28, so as to transport the oxygen produced by the molecular sieve cartridge to the oxygen storage 28.

[0047] And a first on-off control component 19, fixedly connected or detachably connected to the first valve seat 1, the first on-off control component 19 at least includes a first inlet and outlet air hole and a second inlet and outlet air hole; and a first pressure equalizing channel 4, opened in the first valve seat 1, one end of which is connected to the first channel 2, and the other end is connected to the first inlet and outlet air hole; and a second pressure equalizing channel 5, opened in the first valve seat 1, one end of which is connected to the second channel 3, and the other end is connected to the second inlet and outlet air hole; the first on-off control component 19 receives a signal from a controller to control the connection or disconnection of the first pressure equalizing channel 4 and the second pressure equalizing channel 5.

[0048] The integrated valve group also includes a throttling channel 6, which is opened in the first valve seat 1 and / or arranged on the first valve seat 1. A throttling member 7 is arranged in the throttling channel 6, and the throttling member 7 has a smaller aperture, for example, it can be 0.1mm~0.5mm; wherein the throttling member 7 can be integrally formed with the throttling channel 6, for example, the throttling channel 6 itself has a smaller aperture, that is, at least part of the aperture in the throttling channel 6 is smaller, and the aperture of the part is smaller than the aperture of the first equalizing pressure channel 4 and the second equalizing pressure channel 5, or the throttling member 7 and the throttling channel 6 are separate, and the throttling member 7 can be placed in the throttling channel. In the channel 6, the aperture of the throttling member 7 is smaller than the aperture of the throttling channel 6; in order to allow the obtained high-pressure oxygen to continuously purge the other desorbed molecular sieve cylinder, it is necessary to connect the two molecular sieve cylinders through the throttling channel 6, and the position of the throttling channel 6 is set in various ways, such as being set between the first channel 2 and the second channel 3, between the first pressure equalizing channel 4 and the second pressure equalizing channel 5 (without passing through the first on-off control member 19), between the first pressure equalizing channel 4 and the second channel 3, between the first channel 2 and the second pressure equalizing channel 5. There is no limitation here, as long as the connection between the two molecular sieve cylinders can be achieved.

[0049] In a specific embodiment, the first molecular sieve cylinder 24 in the oxygen production system adsorbs oxygen, and the produced oxygen is transported to the oxygen storage 28 through the first channel 2. In order to prevent the backflow of oxygen, a one-way valve 14 is preferably set between the first channel 2 and the oxygen storage 28 and between the second channel 3 and the oxygen storage 28, so that oxygen flows from the first molecular sieve cylinder 24 or the second molecular sieve cylinder 25 to the oxygen storage 28 in one direction; while the first molecular sieve cylinder 24 adsorbs oxygen, the second molecular sieve cylinder 25 is in a desorption state. In order to make the nitrogen in the second molecular sieve cylinder 25 desorb more thoroughly, it is necessary to introduce the high-pressure oxygen in the first molecular sieve cylinder 24 into the oxygen storage 28. Into the second molecular sieve cylinder 25, during the whole process of oxygen production in the first molecular sieve cylinder 24, a small amount of oxygen is continuously transported to the second molecular sieve cylinder 25 through the throttling channel 6, the second molecular sieve cylinder 25 is purged, and the discharge of nitrogen is promoted; in order to improve the oxygen production efficiency, at the end of the adsorption of the first molecular sieve cylinder 24, the first on-off control component 19 is opened to connect the first pressure equalizing channel 4 with the second pressure equalizing channel 5, and the oxygen in the first molecular sieve cylinder 24 is instantly input into the second molecular sieve cylinder 25, which can improve the charging efficiency of the second molecular sieve cylinder 25, facilitate oxygen production, and also facilitate the pressure relief and exhaust of the first molecular sieve cylinder 24. The two molecular sieve cylinders alternately produce oxygen, and vice versa.

[0050] like Figure 6As shown, the integrated valve group also includes an air supply channel 8, which is opened in the first valve seat 1 and / or arranged on the first valve seat 1, and a first end of the air supply channel 8 is connected to the oxygen storage 28; and an oxygen injection channel 9, which is opened in the first valve seat 1 and / or arranged on the first valve seat 1, and one end of the oxygen injection channel 9 is connected to the user end; and a detection channel 10, the second end of which is connected to a breathing sensor (not shown in the figure), and the breathing sensor is connected to the controller by wire or wirelessly for detecting the breathing state of the user, for example, a differential pressure sensor can be used, and the differential pressure sensor has two interfaces, one interface is connected to the detection channel 10, and the other interface is connected to the atmosphere; and a second on-off control member 20, which is fixedly connected or detachably connected to the first valve seat 1, and the second on-off control member 20 is provided with at least three air ports, which receive signals from the controller and selectively control the connection between the air supply channel 8 and the oxygen injection channel 9 or the connection between the oxygen injection channel 9 and the detection channel 10.

[0051] In a specific embodiment, in the first state, the oxygen injection channel 9 is connected with the detection channel 10, and the breathing state of the user end is detected by the breathing sensor. When it is detected that the user breathes oxygen, the controller controls the second on-off control member 20 to switch to the second state, and the air supply channel 8 is connected with the oxygen injection channel 9 to deliver the oxygen in the oxygen storage 28 to the user end. By setting the air supply channel 8, the oxygen injection channel 9, and the detection channel 10, oxygen can be supplied following the user's breathing, and the second on-off control member 20 selectively controls the connection between the air supply channel 8 and the oxygen injection channel 9 or the connection between the oxygen injection channel 9 and the detection channel 10, so that the air supply channel 8 and the detection channel 10 can be isolated to protect the breathing sensor.

[0052] The integrated valve group provided by the utility model includes a first channel 2 and a second channel 3 for delivering oxygen from the molecular sieve cylinder to the oxygen storage 28, as well as a throttling and pressure equalizing channel between the two molecular sieve cylinders. The setting of the throttling channel 6 is conducive to delivering high-pressure oxygen to promote molecular sieve desorption, and the setting of the pressure equalizing channel is conducive to rapid inflation of the molecular sieve cylinder that has just started to take in air, and accelerated exhaust of the molecular sieve cylinder that has just started to exhaust air, so as to improve the oxygen production efficiency; and the integrated valve group also includes an air supply channel 8, an oxygen injection channel 9, and a detection channel 10, which can detect the user's breathing state and only deliver oxygen to the user when the user inhales, thereby improving the utilization rate of oxygen. The integrated valve group of the utility model combines multiple control valves in the oxygen production system, which can save space and simplify the internal structure of the oxygen production system.

[0053] In a specific embodiment, the second on-off control component 20 is provided with an air port A, an air port B and an air port C, the second end of the air supply channel 8 is connected to the air port A, the other end of the oxygen injection channel 9 is connected to the air port B, and the first end of the detection channel 10 is connected to the air port C; when the air port A is connected to the air port B, oxygen is output through the oxygen storage device 28, the air supply channel 8, the air port A, the air port B, and the oxygen injection channel 9, so as to deliver oxygen to the user; when the air port B is connected to the air port C, the breathing state of the user end is detected by the breathing sensor, such as the air pressure change generated when the user breathes, and the detected pressure signal is converted into an electrical signal, which is transmitted to the controller, and the connection between the air port A and the air port B, or the connection between the air port B and the air port C is selectively controlled by the controller.

[0054] In order to protect the breathing sensor, in a specific embodiment, Figure 8 As shown, the detection channel 10 is provided with a safety valve 11, which automatically releases pressure when the pressure in the detection channel 10 is too high, thereby protecting the breathing sensor and preventing it from being damaged by overpressure.

[0055] In order to further integrate the internal structure of the oxygen production system, such as Figure 4 As shown, the first valve seat 1 is further provided with a first cavity 12 and a second cavity 13, the second end of the first channel 2 is connected to the first cavity 12, the second end of the second channel 3 is connected to the second cavity 13, and a one-way valve 14 is provided in both cavities. In this embodiment, the other ends of the first cavity 12 and the second cavity 13 are connected to the oxygen storage 28, so that the oxygen in the molecular sieve cartridge can be unidirectionally transported to the oxygen storage 28. By providing the first cavity 12 and the second cavity 13 in the first valve seat 1, the one-way valve 14 can also be provided in the first valve seat 1.

[0056] In order to facilitate the installation of the throttling member 7, in a specific embodiment, as Figure 5 As shown, one end of the throttling channel 6 is connected to the first pressure-equalizing channel 4, and the other end is connected to the head end of the second cavity 13. The head end here refers to the connecting end of the second channel 3 and the second cavity 13, that is, the direction of the air inlet of the one-way valve 14, which can ensure that at least part of the oxygen enters another molecular sieve cylinder through the throttling channel 6 before entering the one-way valve 14, thereby realizing continuous purging of the desorbing molecular sieve cylinder. For example, when the second molecular sieve cylinder 25 adsorbs oxygen, the produced oxygen can be transported to the second cavity 13 through the second channel 3. At the head end of the second cavity 13, a small amount of oxygen diffuses into the throttling channel 6. This part of oxygen passes through the throttling device 7, the first pressure-equalizing channel 4, and the first channel 2 in turn to enter the first molecular sieve cylinder 24, and most of the oxygen is transported to the oxygen storage device 28 through the one-way valve 14 in the second cavity 13.

[0057] One end of the throttling channel 6 is set at the second cavity 13, which is convenient for placing the throttling device 7 inward through the second cavity 13, and only a shorter throttling channel 6 needs to be set to achieve the purge of another molecular sieve cylinder. After passing through the throttling channel 6, the oxygen can further enter the first molecular sieve cylinder 24 through the existing first pressure equalizing channel 4 and the first channel 2, or the oxygen produced by the first molecular sieve cylinder 24 can first pass through the first channel 2 and the first pressure equalizing channel 4, and then pass through the throttling channel 6 and the second channel 3 to be transported to the second molecular sieve cylinder 25. Therefore, the throttling channel 6 provided in this embodiment can reduce the pipeline setting, which is beneficial to reducing the volume of the integrated valve group and is convenient for installing the throttling device 7.

[0058] In a specific embodiment, the integrated valve assembly further includes a second valve seat 15, which is fixedly connected or detachably connected to the first valve seat 1, and after the throttling member 7 and the one-way valve 14 are placed in the first valve seat 1, the first valve seat 1 is connected to the second valve seat 15, for example, by gluing or threading. Figures 4 to 6 As shown, the second valve seat 15 is provided with an air storage chamber 16. In the present embodiment, the oxygen storage device 28 refers to the air storage chamber 16. The ends of the first cavity 12 and the second cavity 13 are connected to the air storage chamber 16. The oxygen produced by the first molecular sieve cartridge 24 enters the air storage chamber 16 through the first channel 2 and the first cavity 12 in sequence. Similarly, the oxygen produced by the second molecular sieve cartridge 25 enters the air storage chamber 16 through the second channel 3 and the second cavity 13 in sequence. The first end of the air supply channel 8 is connected to the air storage chamber 16. The oxygen produced by the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25 can be directly delivered to the user end through the air supply channel 8 after entering the air storage chamber 16. Fig. 9 As shown in the figure, it is a schematic diagram of the structure of the oxygen production system. When the molecular sieve cartridge produces oxygen, the molecular sieve is desorbed more thoroughly through the throttling hole 26, the equalizing pressure between the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25 is controlled by the equalizing pressure valve 27, the oxygen is transported to the oxygen storage 28 through the one-way valve 14, and the user's breathing is detected by the oxygen injection valve 29 for oxygen supply. The integrated valve group provided in this embodiment can realize the functions of each component in the dotted box in the figure, and integrates the various components at the rear end of the molecular sieve cartridge into one, thereby greatly simplifying the internal structure of the oxygen production system.

[0059] In the pulse oxygen supply mode, in order to store oxygen when the user exhales to improve the oxygen supply efficiency, it is necessary to select an oxygen storage device 28 with appropriate volume. When the volume of the gas storage chamber 16 is small, in one embodiment, it also includes a gas storage tank, that is, the gas storage chamber 16 and the gas storage tank together constitute the oxygen storage tank 28, and the integrated valve group also includes a third channel 17, which is opened in the second valve seat 15 and / or arranged on the second valve seat 15, and one end of the third channel 17 is connected to the gas storage chamber 16, and the other end is connected to the gas storage tank. The oxygen storage device 28 includes both the gas storage chamber 16 in the integrated valve group and the gas storage tank connected to the outside through the third channel 17, which can temporarily store the oxygen produced by the molecular sieve cartridge to make the gas delivered to the user more stable; even if an external gas storage tank is still required, the existence of the gas storage chamber 16 also facilitates the integration of complex pipelines into the integrated valve seat, and the oxygen produced alternately by the two molecular sieve cartridges is directly input into the gas storage chamber 16, and the first end of the air delivery channel 8 is also connected to the gas storage chamber 16, thereby reducing the pipeline connection of the gas storage tank.

[0060] In order to prevent gas leakage, sealing rings 18 are provided between the one-way valve 14 and the first cavity 12, between the one-way valve 14 and the second cavity 13, and between the first valve seat 1 and the second valve seat 15, which can prevent oxygen leakage, thereby facilitating the provision of qualified gas to users.

[0061] The utility model also provides an oxygen production system, including a compressor 21 for generating compressed air; and an inlet and exhaust valve 22, which responds to a signal from a controller to alternately deliver compressed air to a first molecular sieve cartridge 24 and a second molecular sieve cartridge 25, and controls the nitrogen emission of the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25, and a muffler 23 can be connected to the exhaust port end of the inlet and exhaust valve 22 to reduce noise during exhaust; the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25 are both equipped with molecular sieves for adsorbing nitrogen to produce oxygen; and an oxygen storage device 28 for storing oxygen, and a controller connected to the compressor 21 and the inlet and exhaust valve 22 by wire or wirelessly.

[0062] The oxygen production system also includes the integrated valve group as described above, through which the oxygen produced by the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25 is transported to the oxygen storage 28, and the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25 are connected through the throttling channel 6 in the integrated valve group, so that oxygen is transported therebetween to promote the desorption of the molecular sieve; and the integrated valve group controls the pressure equalization between the first molecular sieve cartridge 24 and the second molecular sieve cartridge 25 in response to a signal from the controller, which is beneficial to improving the oxygen production efficiency and controlling the delivery of oxygen to the user. When it is detected that the user is inhaling, the second on-off control component 20 switches to the air supply channel 8 to be connected to the oxygen injection channel 9, so that the product gas in the oxygen storage 28 is supplied to the user.

[0063] The above description is an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention. In the absence of conflict, multiple embodiments in the above embodiments can be combined with each other.

Claims

1. An integrated valve group, used in an oxygen production system, wherein a controller is provided in the oxygen production system, and the controller is connected to the integrated valve group via a wired or wireless connection to control the on / off state of the integrated valve group; characterized in that: The integrated valve group, include, a first valve seat; and The first channel and the second channel are opened in the first valve seat and / or arranged on the first valve seat, the first ends of the first channel and the second channel are connected to the first molecular sieve cartridge and the second molecular sieve cartridge respectively, and the second ends are connected to the oxygen storage device, so as to transport the oxygen produced by the molecular sieve cartridge to the oxygen storage device; and a throttling channel, which is opened in the first valve seat and / or arranged on the first valve seat, wherein a throttling member is arranged, and the throttling channel is used to connect the two molecular sieve cartridges; and A first on-off control member, fixedly connected or detachably connected to the first valve seat, the first on-off control member at least comprising a first air inlet and outlet hole and a second air inlet and outlet hole; and A first pressure equalizing channel is provided in the first valve seat, one end of the first pressure equalizing channel is connected to the first channel, and the other end of the first pressure equalizing channel is connected to the first air inlet and outlet holes; and a second pressure equalizing channel is provided in the first valve seat, one end of which is connected to the second channel, and the other end of which is connected to the second air inlet and outlet holes; the first on-off control element receives a signal from a controller to control the connection or disconnection between the first pressure equalizing channel and the second pressure equalizing channel; and an air supply channel, which is opened in the first valve seat and / or arranged on the first valve seat, and a first end of the air supply channel is connected to the oxygen storage device; and An oxygen injection channel is provided in the first valve seat and / or is arranged on the first valve seat, and one end of the oxygen injection channel is connected to the user end; and A detection channel, a second end of which is connected to a breathing sensor, wherein the breathing sensor is connected to the controller by wire or wirelessly and is used to detect the breathing state of the user; and The second on-off control member is fixedly connected or detachably connected to the first valve seat. The second on-off control member is provided with at least three air ports, which receive signals from the controller and selectively control the connection between the air supply channel and the oxygen injection channel or the connection between the oxygen injection channel and the detection channel.

2. The integrated valve group according to claim 1, characterized in that: The second on-off control component is provided with an air port A, an air port B and an air port C. The second end of the air supply channel is connected to the air port A, the other end of the oxygen injection channel is connected to the air port B, and the first end of the detection channel is connected to the air port C. When the air port A is connected to the air port B, it is used to deliver oxygen to the user, and when the air port B is connected to the air port C, the user's breathing state is detected.

3. The integrated valve assembly according to claim 1, characterized in that: A safety valve is arranged on the detection channel.

4. The integrated valve group according to claim 1, characterized in that: The first valve seat is also provided with a first cavity and a second cavity, the second end of the first channel is connected to the first cavity, the second end of the second channel is connected to the second cavity, and a one-way valve is provided in both cavities to allow the oxygen in the molecular sieve cartridge to be transported to the oxygen storage device in a one-way manner.

5. The integrated valve group according to claim 4, characterized in that: One end of the throttling channel is connected to the first pressure equalizing channel, and the other end is connected to the head end of the second cavity.

6. The integrated valve group according to claim 4 or 5, characterized in that: It also includes a second valve seat, which is fixedly connected or detachably connected to the first valve seat. The second valve seat is provided with an air storage cavity. The ends of the first cavity and the second cavity are both connected to the air storage cavity, and the first end of the air supply channel is connected to the air storage cavity.

7. The integrated valve assembly according to claim 6, characterized in that: The oxygen storage device includes the gas storage chamber and the gas storage tank. The integrated valve group also includes a third channel, which is opened in the second valve seat and / or arranged on the second valve seat. One end of the third channel is connected to the gas storage chamber, and the other end is connected to the gas storage tank.

8. The integrated valve assembly according to claim 6, characterized in that: Sealing rings are arranged between the one-way valve and the first cavity, between the one-way valve and the second cavity, and between the first valve seat and the second valve seat.

9. An oxygen production system comprising: A compressor for generating compressed air; The inlet and outlet valves, in response to the signal of the controller, alternately deliver compressed air to the first molecular sieve cartridge and the second molecular sieve cartridge, and control the nitrogen discharge from the first molecular sieve cartridge and the second molecular sieve cartridge; The first molecular sieve cylinder and the second molecular sieve cylinder are both filled with molecular sieves for adsorbing nitrogen to produce oxygen; An oxygen storage device for storing oxygen; A controller connected to the compressor and the intake and exhaust valves via wired or wireless communication; It is characterized in that: it also includes an integrated valve group as described in any one of claims 1 to 8, through which the oxygen produced by the first molecular sieve cartridge and the second molecular sieve cartridge is transported to the oxygen storage device, and the first molecular sieve cartridge and the second molecular sieve cartridge are connected through a throttling channel in the integrated valve group to transport oxygen therebetween, and the integrated valve group controls the pressure equalization between the first molecular sieve cartridge and the second molecular sieve cartridge in response to a signal from a controller, and controls the delivery of oxygen to a user.

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