Molecular sieve device and oxygen generator

Abstract

The molecular sieve device comprises a molecular sieve group which comprises a first molecular sieve tank and a second molecular sieve tank; the oxygen tank group is positioned between the first molecular sieve tank and the second molecular sieve tank, and is separated by a partition plate to form a first oxygen tank and a second oxygen tank which are independent closed spaces; and the integrated valve is provided with a communicating channel for communicating the first oxygen tank with the second oxygen tank, a first conveying channel for conveying oxygen in the first molecular sieve tank to the communicating channel, and a second conveying channel for conveying oxygen in the second molecular sieve tank to the communicating channel. The integral rigidity strength of the oxygen tank group is ensured by arranging the partition plate, and meanwhile, the pile-up valve is matched with the corresponding communication channel to ensure the communication state between the first oxygen tank and the second oxygen tank, so that the normal use requirement of equipment is met. The partition plates are arranged, so that the overall rigid strength is improved, corresponding sealing connection points are added, and the overall sealing performance of the molecular sieve group and the oxygen tank group is improved. The integrated valve is subjected to optimized integrated design, and the throttling channel, the one-way valve and the cut-off channel are all arranged on the outer side of the integrated valve, so that equipment can be conveniently assembled, machined and maintained in the later period.

Description

Technical Field

[0001] The utility model belongs to the technical field of oxygen concentrators, and particularly relates to a molecular sieve device and an oxygen concentrator with the molecular sieve device. Background Art

[0002] Currently, common molecular sieve adsorption towers generally consist of two cylindrical adsorption tanks and a cylindrical oxygen tank, with the oxygen tank located between the two adsorption tanks and connected by a gas pipeline. Molecular sieve adsorption tower oxygen concentrators utilize molecular sieve physical adsorption and desorption technology. When pressurized, they can adsorb gases such as nitrogen and carbon dioxide from the air. The remaining unabsorbed oxygen is collected by the oxygen tank and, after purification, becomes high-purity oxygen. When depressurized, the adsorption tank releases the adsorbed gas into the ambient air. The next time it is pressurized, it can adsorb gases such as nitrogen and carbon dioxide from the air and produce high-concentration oxygen. The entire process is a periodic dynamic cycle.

[0003] However, due to the influence of pressure, oxygen tanks may deform if the material structure is not rigid enough, thereby affecting the overall sealing and safety performance of the structure, thereby reducing the oxygen concentration and causing a decline in the user experience.

[0004] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0005] In response to the above-mentioned problems in the prior art, the utility model proposes a molecular sieve device, which ensures the rigidity and strength of the entire oxygen tank group through a built-in partition, and in order to ensure mutual conduction between the separated first oxygen tank and the second oxygen tank, a corresponding integrated valve is designed to meet the normal use requirements of the equipment.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] A molecular sieve device, comprising:

[0008] A molecular sieve group, comprising a first molecular sieve tank and a second molecular sieve tank;

[0009] an oxygen tank assembly, the first oxygen tank and the second oxygen tank being located between the first molecular sieve tank and the second molecular sieve tank and separated by a partition to form two independent enclosed spaces;

[0010] An integrated valve is provided with a connecting channel connecting the first oxygen tank and the second oxygen tank, a first delivery channel for delivering oxygen in the first molecular sieve tank to the connecting channel, and a second delivery channel for delivering oxygen in the second molecular sieve tank to the connecting channel.

[0011] In some embodiments of the present application, it further includes a cover body arranged above and below the molecular sieve group and the oxygen tank group, and the cover body is fixed to the molecular sieve group and the oxygen tank group by multiple fasteners; at least one of the fasteners is fixed to the partition.

[0012] In some embodiments of the present application, the integrated valve is located at the outer end of any one of the cover bodies, and a first connecting port connecting the first oxygen tank and the communicating channel, a second connecting port connecting the second oxygen tank and the communicating channel, a first air outlet connecting the communicating channel and the first delivery channel, and a second air outlet connecting the communicating channel and the second delivery channel are provided on the corresponding cover body. The first connecting port, the second connecting port, the first air outlet, and the second air outlet are distributed in a symmetrical structure.

[0013] In some embodiments of the present application, a throttling channel is provided between the first delivery channel and the second delivery channel.

[0014] In some embodiments of the present application, the throttling channel includes:

[0015] The first throttle hole and the second throttle hole are provided outside the housing of the integrated valve, and the outer ends of the two holes are connected to each other;

[0016] a throttle assembly, disposed in the first throttle hole or the second throttle hole;

[0017] A throttle cover plate is a detachable cover provided on the first throttle hole and the second throttle hole.

[0018] In some embodiments of the present application, the first delivery channel and the second delivery channel extend to the outside of the housing of the integrated valve and form a first expansion hole and a second expansion hole, respectively; the first expansion hole and the second expansion hole are connected to the connecting channel, and a one-way valve is provided in both.

[0019] In some embodiments of the present application, the removable covers at the outer ends of the first and second expansion holes are provided with one-way valve cover plates; the one-way valve cover plates are provided with docking ports connected to the first expansion hole, the second expansion hole and the connecting channel, and the docking ports are connected to each other.

[0020] In some embodiments of the present application, a cut-off channel is provided between the first conveying channel and the second conveying channel.

[0021] In some embodiments of the present application, the cut-off channel includes a first cut-off and a second cut-off, and the first cut-off and the second cut-off are both located outside the housing of the integrated valve, and are interconnected and provided with a solenoid valve.

[0022] Based on the above-mentioned molecular sieve device, the present application also provides an oxygen concentrator having the molecular sieve device, which ensures the rigidity of the overall oxygen tank group through a built-in partition, and in order to ensure mutual conduction between the separated first oxygen tank and the second oxygen tank, a corresponding integrated valve is designed to meet the normal use requirements of the equipment.

[0023] An oxygen concentrator is provided with the above-mentioned molecular sieve device.

[0024] Compared with the prior art, the advantages and positive effects of the present invention are:

[0025] 1. The overall rigidity of the oxygen tank group is ensured by setting a partition. At the same time, a corresponding communication channel is matched in the integrated valve to ensure the communication between the first oxygen tank and the second oxygen tank to meet the normal use requirements of the equipment.

[0026] 2. The setting of the partition not only improves the overall rigidity strength, but also increases the corresponding sealing connection points, thereby improving the overall sealing performance of the molecular sieve group and the oxygen tank group.

[0027] 3. The integrated valve has been optimized and integrated, with the throttling channel, one-way valve and shut-off channel all set on the outside of the integrated valve to facilitate equipment assembly, processing and subsequent maintenance.

[0028] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a schematic structural diagram of an embodiment of a molecular sieve device proposed in the present utility model;

[0031] Figure 2 for Figure 1 Schematic diagram of the structure after removing the box;

[0032] Figure 3 for Figure 2 A schematic cross-sectional view of the structure;

[0033] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of the integrated valve;

[0034] Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure in another direction;

[0035] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of the integrated valve;

[0036] Figure 7 It is a schematic diagram of the explosion structure of the molecular sieve device;

[0037] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the middle part;

[0038] Figure 9 for Figure 7 An enlarged structural diagram of the midsole cover;

[0039] Figure 10 for Figure 7 A schematic diagram of the enlarged structure of the integrated valve;

[0040] Figure 11 for Figure 10 Structural diagram from another angle;

[0041] Figure 12 It is a structural diagram of the integrated valve;

[0042] Figure 13 It is a schematic diagram of a transverse cross-sectional structure of an integrated valve;

[0043] Figure 14 is another transverse cross-sectional structural schematic diagram of the integrated valve;

[0044] Figure 15 It is a vertical cross-sectional structural diagram of an integrated valve; wherein, an oxygen concentrator 100;

[0045] Box 10;

[0046] Molecular sieve device 70;

[0047] First molecular sieve tank 71; second molecular sieve tank 72; first oxygen tank 73; partition 734; second oxygen tank 74;

[0048] Integrated valve 75; first delivery channel 751; first expansion hole 7512; second delivery channel 752; second expansion hole 7522; communication channel 753; throttling channel 754; first throttling hole 7541; second throttling hole 7542; valve body 755; one-way valve cover plate 756; cover plate channel 7561; cut-off channel 757; first cut-off 7571; second cut-off 7572;

[0049] Bottom cover 76; first air outlet 761; second air outlet 762; first connecting port 763; second connecting port 764;

[0050] Bottom sealing strip 77; top cover 78; top sealing strip 79. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0052] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the positional relationships shown in the accompanying drawings, with the direction closer to the center of the component being "inside" and the opposite being "outside". The terms are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0053] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0054] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0055] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0056] See also Figures 1-15 , is an embodiment of a molecular sieve device proposed in the present invention. A molecular sieve device 70 is located within the housing 10 of an oxygen concentrator 100 and is used to separate oxygen from compressed air and store it. The molecular sieve device 70 comprises a molecular sieve assembly, an oxygen tank assembly, and an integrated valve 75. The molecular sieve assembly comprises a first molecular sieve tank 71 and a second molecular sieve tank 72. The oxygen tank assembly is located between the first and second molecular sieve tanks 71 and 72, facilitating a compact structure and reducing the size of the molecular sieve device. The oxygen tank assembly comprises a first oxygen tank 73 and a second oxygen tank 74. A partition 734 separates the first and second oxygen tanks 73 and 74, forming two independent, enclosed spaces. The integrated valve 75 is provided with a connecting channel 753 connecting the first and second oxygen tanks 73 and 74, a first delivery channel 751 for transporting oxygen from the first molecular sieve tank 71 to the connecting channel 753, and a second delivery channel 752 for transporting oxygen from the second molecular sieve tank 72 to the connecting channel 753.

[0057] In this embodiment, the provision of a partition 734 ensures the overall rigidity of the oxygen tank assembly. A corresponding communication channel 753 is also incorporated into the integrated valve 75 to ensure connectivity between the first oxygen tank 73 and the second oxygen tank 74, ensuring proper operation of the device. The provision of partition 734 not only enhances the overall rigidity but also increases the number of sealing connection points, thereby improving the sealing performance of the molecular sieve assembly and the oxygen tank assembly. Integrating the channel within the integrated valve 75 reduces the number of connecting pipes, simplifies the structure, and conserves space within the oxygen concentrator.

[0058] In some embodiments of this application, see Figure 7 As shown, the molecular sieve device 70 also includes covers located above and below the molecular sieve group and the oxygen tank group, and the covers are fixed to the molecular sieve group and the oxygen tank group by multiple fasteners. Specifically, there is a bottom cover 76 below the molecular sieve group and the oxygen tank group, and a top cover 78 above the molecular sieve group and the oxygen tank group. The bottom cover 76 is fixed to the molecular sieve group and the oxygen tank group by multiple fasteners; at least one fastener is fixed to the partition 734, and the partition 734 is provided with fastening holes that match the fasteners. The top cover 78 is fixed to the molecular sieve group and the oxygen tank group by multiple fasteners; at least one fastener is fixed to the partition 734.

[0059] In some embodiments of the present application, the molecular sieve assembly and the oxygen tank assembly are integrated into a single structure, and a bottom sealing strip 77 is provided between the integrated structure and the bottom cover 76. The bottom sealing strip 77 is provided to achieve sealing. The integrated structure is a cylindrical structure, and the lower portion is sealed by sealing with the bottom cover 76. A top sealing strip 79 is provided between the integrated structure and the top cover 78.

[0060] In some embodiments of the present application, the integrated valve 75 is located below the bottom cover 76, so it is necessary to open a connection port on the bottom cover 76 to connect the molecular sieve group and the oxygen tank group to the channel on the integrated valve 75. Figure 9 As shown, the bottom cover 76 is provided with a first connection port 763 connecting the first oxygen tank 73 and the communication channel 753, a second connection port 764 connecting the second oxygen tank 74 and the communication channel 753, a first air outlet 761 connecting the communication channel 753 and the first delivery channel 751, and a second air outlet 762 connecting the communication channel 753 and the second delivery channel 752. The first connection port 763, the second connection port 764, the first air outlet 761, and the second air outlet 762 are arranged symmetrically, facilitating the arrangement of the channel piping within the integrated valve 75.

[0061] In some embodiments of this application, see Figure 13-15As shown, a throttling channel 754 is provided between the first delivery channel 751 and the second delivery channel 752. The first molecular sieve tank 71 and the second molecular sieve tank 72 are connected via the throttling channel 754. When one molecular sieve tank is pressurized for adsorption, the generated oxygen can be transported through the throttling channel 754 to the other molecular sieve tank in the desorption state, thereby accelerating the discharge of nitrogen from the other molecular sieve tank.

[0062] In some embodiments of the present application, the throttling channel 754 includes a first throttling hole 7541, a second throttling hole 7542, a throttling assembly, and a throttling cover. The first throttling hole 7541 and the second throttling hole 7542 are interconnected. The first throttling hole 7541 and the second throttling hole 7542 are disposed outside the housing 755 of the integrated valve 75. A throttling assembly is disposed within the first throttling hole 7541 or the second throttling hole 7542 to throttle the gas flowing therethrough. A removable cover of the throttling cover is disposed outside the first throttling hole 7541 and the second throttling hole 7542. This facilitates assembly, processing, and subsequent maintenance of the throttling channel 754.

[0063] In some embodiments of the present application, the first delivery channel 751 and the second delivery channel 752 extend outside the housing 75 of the integrated valve 75; specifically, the first delivery channel 751 has a first reamer 7512 that opens on the outer side of the housing 75, and a one-way valve is provided in the first reamer 7512 to ensure one-way flow of gas in the first delivery channel 751. The first reamer 7512 is connected to the connecting channel 753, so that the gas in the first delivery channel 751 can pass through the first reamer 7512 and reach the connecting channel 753. The radial dimension of the first reamer 7512 increases in the direction of oxygen delivery, so that the volume within the first reamer 7512 gradually increases in the direction of oxygen delivery, which is conducive to rectifying the flow and achieving stable airflow delivery. Preferably, the first reamer 7512 is a multi-stage variable diameter with gradually increasing radial dimensions, so that the volume gradually increases and the gas is stabilized.

[0064] The second delivery channel 752 includes a second reamer 7522 opening on the outer side of the housing 75. A one-way valve is disposed within the second reamer 7522 to ensure unidirectional flow of gas within the second delivery channel 752. The second reamer 7522 has an increasing radial dimension in the direction of oxygen delivery, resulting in a gradual increase in volume within the second reamer 7522 in this direction, which facilitates flow rectification and stabilizes airflow delivery. Preferably, the second reamer 7522 has a multi-stage variable diameter with progressively increasing radial dimensions, achieving a gradual increase in volume and thus stabilizing gas flow.

[0065] In some embodiments of the present application, the removable covers at the outer ends of the first and second reamer holes 7512, 7522 are provided with check valve cover plates 756. The check valve cover plates 756 are provided with docking ports that communicate with the first and second reamer holes 7512, 7522, and the communication channel 753, respectively. Interconnected cover plate channels 7561 are provided between the multiple docking ports. The provision of the check valve cover plates 756 facilitates the installation of check valves within the first and second reamer holes 7512, 7522, and facilitates the formation of the cover plate channels 7561, thereby enabling communication between the first and second reamer holes 7512, 7522, and the communication channel 753.

[0066] In some embodiments of the present application, a shutoff channel 757 is provided between the first delivery channel 751 and the second delivery channel 752 for controlling the connection or shutoff between the first delivery channel 751 and the second delivery channel 752. The shutoff channel 757 includes a first cutout 7571 and a second cutout 7572, both of which are located outside the housing 755 of the integrated valve 75. The first cutout 7571 and the second cutout 7572 are in communication with each other, and a solenoid valve is provided between the first cutout 7571 and the second cutout 7572.

[0067] In some embodiments of the present application, the integrated valve 75 is optimized and integrated, and the throttling channel 754, the one-way valve, and the shut-off channel 757 are all arranged on the outside of the valve body 755 of the integrated valve 75, so as to facilitate the assembly, processing, and subsequent maintenance of the equipment. The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, such modifications or replacements do not deviate from the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed for protection by the present invention.

Claims

1. A molecular sieve device, characterized in that: include: A molecular sieve group, comprising a first molecular sieve tank and a second molecular sieve tank; an oxygen tank assembly, the first oxygen tank and the second oxygen tank being located between the first molecular sieve tank and the second molecular sieve tank and separated by a partition to form two independent enclosed spaces; An integrated valve is provided with a connecting channel connecting the first oxygen tank and the second oxygen tank, a first delivery channel for delivering oxygen in the first molecular sieve tank to the connecting channel, and a second delivery channel for delivering oxygen in the second molecular sieve tank to the connecting channel.

2. The molecular sieve device according to claim 1, characterized in that It also includes covers arranged above and below the molecular sieve group and the oxygen tank group. The covers are fixed to the molecular sieve group and the oxygen tank group through a plurality of fasteners; at least one of the fasteners is fixed to the partition.

3. The molecular sieve device according to claim 2, characterized in that The integrated valve is located at the outer end of any of the cover bodies, and is provided on its corresponding cover body with a first connecting port connecting the first oxygen tank and the communicating channel, a second connecting port connecting the second oxygen tank and the communicating channel, a first air outlet connecting the communicating channel and the first delivery channel, and a second air outlet connecting the communicating channel and the second delivery channel. The first connecting port, the second connecting port, the first air outlet, and the second air outlet are distributed in a symmetrical structure.

4. The molecular sieve device according to claim 1, characterized in that A throttling channel is provided between the first conveying channel and the second conveying channel.

5. The molecular sieve device according to claim 4, characterized in that The throttling channel includes: The first throttle hole and the second throttle hole are provided outside the housing of the integrated valve, and the outer ends of the two holes are connected to each other; a throttle assembly, disposed in the first throttle hole or the second throttle hole; A throttle cover plate is a detachable cover provided on the first throttle hole and the second throttle hole.

6. The molecular sieve device according to any one of claims 1 to 5, characterized in that: The first delivery channel and the second delivery channel extend to the outside of the housing of the integrated valve and form a first expansion hole and a second expansion hole respectively; the first expansion hole and the second expansion hole are connected to the connecting channel, and a one-way valve is provided in both.

7. The molecular sieve device according to claim 6, characterized in that The removable covers at the outer ends of the first and second expansion holes are provided with one-way valve cover plates; the one-way valve cover plates are provided with docking ports connected to the first expansion hole, the second expansion hole and the connecting channel, and the docking ports are connected to each other.

8. The molecular sieve device according to claim 1, characterized in that A cut-off channel is provided between the first conveying channel and the second conveying channel.

9. The molecular sieve device according to claim 8, characterized in that The cut-off channel includes a first cut-off and a second cut-off, and both the first cut-off and the second cut-off are located outside the housing of the integrated valve, and are communicated with each other and provided with a solenoid valve.

10. An oxygen concentrator, characterized in that: A molecular sieve device according to any one of claims 1 to 9.

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