Molecular tower and oxygen generator

Abstract

The present invention relates to a molecular tower and an oxygen concentrator, and relates to the technical field of oxygen concentrators. The molecular tower of the present invention includes a tower body assembly, a drying assembly, and an adsorption assembly; the drying assembly is disposed within the tower body assembly and is used to dry the gas to be separated; the adsorption assembly is disposed within the tower body assembly, surrounds the drying assembly, and is capable of separating the target gas from the gas to be separated. The technical solution disclosed in the present invention can reduce the humidity of the gas to be separated and improve the separation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen concentrators, in particular to a molecular tower and an oxygen concentrator. Background Art

[0002] With the worsening of air pollution and the aging of society, the incidence and mortality of various diseases are on the rise, and oxygen concentrators have gradually come into the public eye. Users wear oxygen masks, oxygen tubes and other equipment to absorb oxygen to relieve physical discomfort.

[0003] The molecular tower is the core component of the oxygen concentrator. It houses a molecular sieve for adsorption. When air enters the tower, the molecular sieve absorbs and separates oxygen and nitrogen, producing oxygen. However, humidity in the air reduces the molecular sieve's ability to separate nitrogen and oxygen. Furthermore, once water molecules are adsorbed by the molecular sieve, they are not separated again. Long-term use can shorten the molecular sieve's service life. Summary of the Invention

[0004] The embodiments of the present invention provide a molecular tower and an oxygen generator, which can reduce the humidity of the gas to be separated and improve the separation effect.

[0005] In a first aspect, an embodiment of the present invention provides a molecular tower, comprising:

[0006] Tower assembly;

[0007] a drying component, disposed in the tower body component, and used for drying the gas to be separated; and

[0008] The adsorption component is arranged in the tower body component, the adsorption component surrounds the drying component, and the adsorption component can separate the target gas from the gas to be separated.

[0009] In one embodiment, the drying assembly comprises:

[0010] a support having a drying chamber; and

[0011] a desiccant, disposed in the drying chamber;

[0012] The cross-sectional width of the support member gradually decreases from top to bottom along the height direction, and a plurality of through holes are provided on the side wall of the support member.

[0013] In one embodiment, the support member comprises:

[0014] a main body extending along the height direction, wherein the opening of the drying chamber is provided on the top of the main body;

[0015] A limiting edge surrounds the side wall of the main body, and a plurality of air inlet holes are provided on the limiting edge;

[0016] A support cover is provided on the top of the main body;

[0017] Wherein, the cross-sectional width of the limiting edge is greater than the cross-sectional width of the main body, so as to form a step structure abutting against the top of the adsorption component.

[0018] In one embodiment, the drying assembly comprises:

[0019] a first filter element, disposed on an outer wall of the main body, the first filter element covering the through hole;

[0020] The second filter element is arranged on the limiting edge, and the second filter element covers the air inlet.

[0021] In one embodiment, the cross-sectional width of the desiccant is smaller than the aperture of the through hole.

[0022] In one embodiment, the tower assembly comprises:

[0023] Tower body;

[0024] A bottom cover portion is provided on one end of the tower body portion, and an air outlet structure is provided on the bottom cover portion;

[0025] A top cover portion is provided on an end of the tower body away from the bottom cover portion, and an air intake structure connected to the air intake hole is provided on the top cover portion;

[0026] a partition, disposed in the tower body, the partition abutting against the bottom cover, and provided with a plurality of air outlet holes communicating with the air outlet structure;

[0027] The support member is arranged in the tower body, the support member, the tower body and the partition member together form an adsorption cavity, and the adsorption assembly is arranged in the adsorption cavity.

[0028] In one embodiment, the ratio of the height of the support member to the height of the adsorption chamber is 0.3-0.6.

[0029] In one embodiment, the gas outlet structure comprises:

[0030] An air outlet groove is provided on a side of the bottom cover portion close to the tower body portion, and the air outlet groove is connected to the air outlet hole;

[0031] An air outlet is provided on a side of the bottom cover portion close to the tower body portion;

[0032] The air outlet transition cavity is arranged in the bottom cover portion, and two ends of the air outlet transition cavity are respectively connected to the air outlet groove and the air outlet.

[0033] In one embodiment, the air intake structure comprises:

[0034] An air inlet groove is provided on a side of the top cover portion close to the tower body portion, and the air inlet groove is connected to the air inlet hole;

[0035] An air inlet is provided on a side of the top cover portion close to the tower body portion;

[0036] An air intake transition chamber is provided in the top cover portion, and two ends of the air intake transition chamber are respectively communicated with the air intake groove and the air intake port.

[0037] In one embodiment, the molecular tower includes an elastic member, which is sleeved on the support member, one end of the elastic member abuts against the limiting edge, and the other end abuts against the top cover;

[0038] Wherein, a limiting groove for abutting against the elastic member is provided on the top cover portion, and the limiting groove is located in the air inlet groove.

[0039] In one embodiment, the molecular tower comprises:

[0040] An air intake valve is provided on the top cover, and an air outlet end of the air intake valve is connected to the air intake structure;

[0041] The gas storage tank is arranged on the bottom cover, and the gas inlet of the gas storage tank is connected to the gas outlet structure.

[0042] In a second aspect, an embodiment of the present invention provides an oxygen concentrator, comprising the molecular tower as described above.

[0043] Compared with the prior art, the advantages of the embodiments of the present invention are that, by arranging a drying component to absorb water molecules in the gas to be separated, the humidity of the gas to be separated is reduced to achieve drying of the gas to be separated; by arranging an adsorption component to surround the drying component, the drying component is ensured to be located on the movement path of the gas to be separated, so that the gas to be separated is fully in contact with the drying group, so as to further improve the drying effect and drying efficiency, thereby improving the service life and separation capacity of the molecular sieve and ensuring the separation effect of the molecular tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Hereinafter, the present invention will be described in more detail based on embodiments with reference to the accompanying drawings.

[0045] Figure 1 1 is a schematic diagram of the three-dimensional structure of a molecular tower provided by one embodiment of the present invention;

[0046] Figure 2 yes Figure 1A cross-sectional view of the molecular tower in the main viewing direction provided in the embodiment;

[0047] Figure 3 yes Figure 2 Enlarged view of part A;

[0048] Figure 4 yes Figure 2 Enlarged view of part B;

[0049] Figure 5 yes Figure 2 Enlarged view of part C;

[0050] Figure 6 yes Figure 1 An exploded view of a molecular tower provided in the embodiment;

[0051] Figure 7 yes Figure 1 A schematic structural diagram of the support member provided in the embodiment.

[0052] Reference numerals:

[0053] 10. Tower body assembly; 110. Tower body; 120. Bottom cover; 1201. Air outlet structure; 1202. Air outlet groove; 1203. Air outlet; 130. Top cover; 1301. Air inlet structure; 1302. Air inlet groove; 1303. Air inlet; 1304. Air inlet transition chamber; 1305. Limiting groove; 140. Separator; 1401. Air outlet; 150. First sealing element; 160. Second sealing element; 170. Third sealing element; 180. Third filter element;

[0054] 20. Drying assembly; 210. Support member; 2101. Main body; 2102. Positioning edge; 2103. Support cover; 2104. Through hole; 2105. Air inlet; 220. First filter element; 230. Second filter element;

[0055] 30. Adsorption components;

[0056] 40. Elastic parts;

[0057] 50. Intake valve;

[0058] 60. Gas storage tank;

[0059] 70. Pressure regulating valve. DETAILED DESCRIPTION

[0060] The present invention will be further described below with reference to the accompanying drawings.

[0061] The molecular tower is the core component of the oxygen concentrator. It houses a molecular sieve for adsorption. When air enters the tower, the molecular sieve absorbs and separates oxygen and nitrogen, producing oxygen. However, humidity in the air reduces the molecular sieve's ability to separate nitrogen and oxygen. Furthermore, once water molecules are adsorbed by the molecular sieve, they are not separated again. Long-term use can shorten the molecular sieve's service life.

[0062] Example 1

[0063] like Figure 1 、 Figure 2 、 Figure 5 As shown, in order to solve the above technical problems, at least one embodiment of the present invention provides a molecular tower, including a tower body component 10, a drying component 20 and an adsorption component; the drying component 20 is arranged in the tower body component 10, and the drying component 20 is used to dry the gas to be separated; the adsorption component 30 is arranged in the tower body component 10, the adsorption component 30 surrounds the drying component 20, and the adsorption component 30 can separate the target gas from the gas to be separated.

[0064] As can be seen from the above, by arranging the drying component 20 to absorb the water molecules in the gas to be separated, the humidity of the gas to be separated is reduced to achieve drying of the gas to be separated; by arranging the adsorption component around the drying component 20, it is ensured that the drying component 20 is located on the movement path of the gas to be separated, so that the gas to be separated is fully in contact with the drying component 20, so as to further improve the drying effect and drying efficiency, thereby improving the service life and separation capacity of the molecular sieve and ensuring the separation effect of the molecular tower.

[0065] It should be noted that the adsorption assembly 30 includes an adsorption member. When the adsorption member is in a granular form, for example, when the adsorption member is a molecular sieve, the adsorption assembly 30 is formed by filling and compacting the adsorption member.

[0066] It should also be noted that, taking the molecular tower used to prepare oxygen as an example, the gas to be separated is air, the target gas is oxygen, and the adsorption element is a molecular sieve. The molecular sieve can quickly adsorb nitrogen and other gases in the air and separate oxygen, thereby completing the preparation of oxygen.

[0067] Example 2

[0068] like Figure 1 、 Figure 2 、 Figure 6 As shown, the molecular tower includes a tower body component 10, a drying component 20 and an adsorption component; the drying component 20 is arranged in the tower body component 10, and the drying component 20 is used to dry the gas to be separated; the adsorption component 30 is arranged in the tower body component 10, the adsorption component 30 surrounds the drying component 20, and the adsorption component 30 can separate the target gas from the gas to be separated.

[0069] As can be seen from the above, by arranging the drying component 20 to absorb the water molecules in the gas to be separated, the humidity of the gas to be separated is reduced to achieve drying of the gas to be separated; by arranging the adsorption component around the drying component 20, it is ensured that the drying component 20 is located on the movement path of the gas to be separated, so that the gas to be separated is fully in contact with the drying component 20, so as to further improve the drying effect and drying efficiency, thereby improving the service life and separation capacity of the molecular sieve and ensuring the separation effect of the molecular tower.

[0070] It should be noted that the adsorption assembly 30 includes an adsorption member. When the adsorption member is in a granular form, for example, when the adsorption member is a molecular sieve, the adsorption assembly 30 is formed by filling and compacting the adsorption member.

[0071] It should also be noted that, taking the molecular tower used to prepare oxygen as an example, the gas to be separated is air, the target gas is oxygen, and the adsorption element is a molecular sieve. The molecular sieve can quickly adsorb nitrogen and other gases in the air and separate oxygen, thereby completing the preparation of oxygen.

[0072] like Figure 1 、 Figure 2 、 Figure 6 As shown, in some embodiments, the drying component 20 includes a support member 210 and a desiccant; the support member 210 has a drying chamber; the desiccant is arranged in the drying chamber; wherein the cross-sectional width of the support member 210 gradually decreases from top to bottom along the height direction, and a plurality of through holes 2104 are provided on the side wall of the support member 210.

[0073] By gradually decreasing the maximum width of the cross section of the support member 210 from top to bottom along the height direction, the resistance to the flow of the gas to be separated can be effectively reduced, making the flow of the gas to be separated smoother, thereby improving the drying efficiency. Furthermore, compared to a cylindrical structure, the support member 210 of the present invention can provide a larger space in the adsorption chamber, thereby accommodating more adsorbents within the adsorption chamber and improving the separation effect of the adsorption assembly 30.

[0074] It should be noted that the desiccant is in granular form, and includes but is not limited to silica gel desiccant, calcium chloride desiccant, and fiber desiccant. The above desiccant has the characteristics of excellent moisture absorption performance and long service life.

[0075] It should also be noted that if Figure 1 As shown, the height direction is parallel to the Z direction.

[0076] It should also be noted that the cross section of the support member 210 is a cross section of the support member 210 perpendicular to the height direction, for example, Figure 2 、 Figure 6 、 Figure 7 As shown, when the cross section of the support member 210 is circular, the cross section width of the support member 210 is the diameter.

[0077] It should also be noted that the multiple through holes 2104 are arranged at equal intervals around the support member 210 in the circumferential direction, and the multiple through holes 2104 on the same circumference form a through hole 2104 group, and the multiple through hole 2104 groups are arranged at intervals along the height direction.

[0078] like Figure 6 、 Figure 7 As shown, in some embodiments, the support member 210 includes a main body 2101, a limiting edge 2102 and a support cover 2103; the main body 2101 extends in the height direction, and the opening of the drying chamber is arranged on the top of the main body 2101; the limiting edge 2102 surrounds the side wall of the main body 2101, and a plurality of air inlet holes 2105 are arranged on the limiting edge 2102; the support cover 2103 is arranged on the top of the main body 2101; wherein, the cross-sectional width of the limiting edge 2102 is greater than the cross-sectional width of the main body 2101, so as to form a step structure that abuts the top of the adsorption assembly 30.

[0079] The main body 2101 is provided to provide a structural basis for placing the desiccant; the cross-sectional width of the limiting edge 2102 is set to be larger than the cross-sectional width of the main body 2101, and the step mechanism is used to provide a structural basis for limiting the support 210, compacting the molecular sieve and preventing the molecular sieve from flowing; and the air inlet 2105 is provided to introduce the gas to be separated into the drying component 20 and the adsorption component.

[0080] It should be noted that the cross-sectional width of the main body 2101 gradually decreases from top to bottom along the height direction, and a plurality of through holes 2104 are provided on the side wall of the main body 2101 .

[0081] It should also be noted that the limiting edge 2102 includes but is not limited to being connected to the main body 2101 by being integrally formed with the main body 2101 or by being welded to the main body 2101.

[0082] It should also be noted that the cross section of the limiting edge 2102 is a cross section perpendicular to the height direction of the limiting edge 2102. For example, Figure 6 、 Figure 7 As shown, when the cross section of the limiting edge 2102 is a circular ring, the cross section width of the limiting edge 2102 is the diameter.

[0083] It should also be noted that the support cover 2103 is connected to the main body 2101 including but not limited to being connected by threaded connection.

[0084] like Figure 6As shown, in some embodiments, the drying component 20 includes a first filter element 220 and a second filter element 230; the first filter element 220 is arranged on the outer wall of the main body 2101, and the first filter element 220 covers the through hole 2104; the second filter element 230 is arranged on the limiting edge 2102, and the second filter element 230 covers the air inlet 2105.

[0085] By setting the first filter element 220 to cover the through hole 2104 and the second filter element 230 to cover the air inlet hole 2105, not only can the gas to be separated be filtered to reduce impurities in the gas to be separated, but also the adsorption element can be prevented from clogging the through hole 2104 and the air inlet hole 2105, or entering the drying chamber through the through hole 2104.

[0086] It should be noted that the first filter element 220 and the second filter element 230 are filter cottons. For example, the first filter element 220 and the second filter element 230 are glass fiber filter cottons.

[0087] It should also be noted that if Figure 6 As shown, the cross-sectional width of the first filter element 220 gradually decreases from top to bottom along the height direction, and a through groove matching with the main body 2101 is provided on the first filter element 220, and the through groove and the main body 2101 are interference fit.

[0088] It should also be noted that a side groove is provided on the top of the limiting side 2102 , and the second filter element 230 is provided in the side groove.

[0089] In some embodiments, the cross-sectional width of the desiccant is smaller than the aperture of the through hole 2104 .

[0090] By limiting the cross-sectional width of the desiccant to be smaller than the aperture of the through hole 2104 , the desiccant is prevented from clogging the through hole 2104 , thereby affecting the flow of the gas to be separated, and further affecting the separation effect and the drying effect.

[0091] It should be noted that the cross section of the desiccant is circular, and the width of the cross section of the desiccant is the diameter.

[0092] It should also be noted that the cross-sectional width of the desiccant cannot be too small. For example, the cross-sectional width of the desiccant is 0.1 of the aperture of the through hole 2104. If it is too small, the desiccant will accumulate in the through hole 2104 and even squeeze the first filter element 220, causing the first filter element 220 to deform.

[0093] like Figure 2 、 Figure 6As shown, in some embodiments, the tower body assembly 10 includes a tower body portion 110, a bottom cover portion 120 and a top cover portion 130; the bottom cover portion 120 is arranged on one end of the tower body portion 110, and an air outlet structure 1201 is provided on the bottom cover portion 120; the top cover portion 130 is arranged on the end of the tower body portion 110 away from the bottom cover portion 120, and an air intake structure 1301 connected to the air intake hole 2105 is provided on the top cover portion 130; the partition 140 is arranged in the tower body portion 110, the partition 140 abuts against the bottom cover portion 120, and a plurality of air outlet holes 1401 connected to the air outlet structure 1201 are provided on the partition 140; wherein, the support member 210 is arranged in the tower body portion 110, and the support member 210, the tower body portion 110 and the partition 140 jointly form an adsorption chamber, and the adsorption assembly 30 is arranged in the adsorption chamber.

[0094] By providing the tower body 110 , the bottom cover 120 , the top cover 130 and the partition 140 , the tower assembly 10 forms a split structure, which is not only convenient for assembly and disassembly, but also convenient for replacement of desiccant and adsorbent.

[0095] It should be noted that the number of tower body assemblies 10 can be one or more, and each tower body assembly 10 is provided with a drying assembly 20 and an adsorption assembly 30; when the number of tower body assemblies 10 is multiple, the multiple bottom cover parts 120 can be independent of each other and split structures, or can be connected as an integrated structure; the multiple top cover parts 130 can be independent of each other and split structures, or can be connected as an integrated structure;

[0096] For example, Figure 1 、 Figure 2 As shown, there are two tower body assemblies 10 , each of which is provided with a drying assembly 20 and an adsorption assembly 30 . The two bottom cover parts 120 are connected as an integral structure, and the two top cover parts 130 are connected as an integral structure.

[0097] It should also be noted that the tower body 110 and the bottom cover 120 are pre-fixed by threaded connection and then fixed by screw connection for the second time; the tower body 110 and the top cover 130 are pre-fixed by threaded connection and then fixed by screw connection for the second time.

[0098] It should also be noted that if Figure 3 As shown, at least one first sealing member 150 is provided between the bottom cover portion 120 and the tower body portion 110 to improve sealing and reduce gas leakage; at least one first sealing groove is provided on the bottom cover portion 120, and at least one first sealing groove corresponds to at least one first sealing member 150 one-to-one, and the first sealing member 150 is provided in the corresponding first sealing groove.

[0099] It should also be noted that if Figure 4As shown, at least one second sealing member 160 is provided between the top cover portion 130 and the tower body portion 110 to improve sealing and reduce gas leakage; at least one second sealing groove is provided on the top cover portion 130, and at least one second sealing groove corresponds to at least one second sealing member 160 one-to-one, and the second sealing member 160 is provided in the corresponding second sealing groove.

[0100] like Figure 6 As shown, in some embodiments, the tower assembly 10 includes a third filter element 180 disposed on the partition 140 , and the third filter element 180 covers at least a portion of the air outlet 1401 .

[0101] By setting the third filter element 180 to cover the air outlet 1401, not only can the gas to be separated be filtered to reduce impurities in the gas to be separated, but also the adsorption element can be prevented from clogging the air outlet 1401 or leaking through the air outlet 1401.

[0102] It should be noted that the third filter element 180 is filter cotton, for example, the third filter element 180 is glass fiber filter cotton.

[0103] In some embodiments, the ratio of the height of the support member 210 to the height of the adsorption chamber is 0.3-0.6.

[0104] By limiting the height between the support member 210 and the adsorption chamber, the volume of the drying chamber is prevented from being too large or too small, thereby achieving both the drying effect and the separation effect. When the height ratio of the support member 210 to the adsorption chamber is less than 0.3, the height of the support member 210 is too small, resulting in a small volume of the drying chamber and poor drying performance, which in turn affects the separation effect of the molecular sieve and shortens the service life of the molecular sieve; when the height ratio of the support member 210 to the adsorption chamber is greater than 0.6, the height of the support member 210 is too large, resulting in a small volume of the adsorption chamber, a reduction in adsorbents, and affecting the separation effect of the molecular sieve.

[0105] It should be noted that if Figure 2 As shown, the height of the support member 210 is L1, and the height of the adsorption chamber is L2, that is, the ratio of L1 to L2 is 0.3-0.6.

[0106] like Figure 2 、 Figure 6 As shown, in some embodiments, the air outlet structure 1201 includes an air outlet groove 1202, an air outlet port 1203 and an air outlet transition cavity; the air outlet groove 1202 is arranged on the side of the bottom cover portion 120 close to the tower body portion 110, and the air outlet groove 1202 is connected to the air outlet hole 1401; the air outlet port 1203 is arranged on the side of the bottom cover portion 120 close to the tower body portion 110; the air outlet transition cavity is arranged in the bottom cover portion 120, and the two ends of the air outlet transition cavity are respectively connected to the air outlet groove 1202 and the air outlet port 1203.

[0107] By arranging the gas outlet groove 1202, the gas outlet port 1203 and the gas outlet transition cavity on the bottom cover 120 to form an integrated gas outlet structure 1201, no additional pipelines are required, which is not only convenient for installation, but also prepares for the extraction of separated gas.

[0108] It should be noted that the air outlet groove 1202 is coaxially arranged with the tower body 110 , and the air outlet groove 1202 is provided with a plurality of reinforcing ribs to improve the structural strength.

[0109] like Figure 2 、 Figure 6 As shown, in some embodiments, the air intake structure 1301 includes an air intake groove 1302, an air intake port 1303 and an air intake transition cavity 1304; the air intake groove 1302 is arranged on a side of the top cover portion 130 close to the tower body portion 110, and the air intake groove 1302 is connected to the air intake hole 2105; the air intake port 1303 is arranged on a side of the top cover portion 130 close to the tower body portion 110; the air intake transition cavity 1304 is arranged in the top cover portion 130, and the two ends of the air intake transition cavity 1304 are respectively connected to the air intake groove 1302 and the air intake port 1303.

[0110] By providing an air inlet groove 1302, an air inlet port 1303 and an air inlet transition cavity 1304 on the top cover 130 to form an integrated air outlet structure 1201, no additional pipelines are required, which is not only convenient for installation but also prepares for the introduction of the gas to be separated.

[0111] It should be noted that the air outlet groove 1202 is coaxially arranged with the tower body 110 , and the air outlet groove 1202 is provided with a plurality of reinforcing ribs to improve the structural strength.

[0112] like Figure 2 、 Figure 6 As shown, in some embodiments, the molecular tower includes an elastic member 40, which is sleeved on the support member 210, one end of the elastic member 40 abuts against the limiting edge 2102, and the other end abuts against the top cover portion 130; wherein, a limiting groove 1305 for abutting against the elastic member 40 is provided on the top cover portion 130, and the limiting groove 1305 is located in the air inlet groove 1302.

[0113] It should be noted that when the adsorbent is granular, for example, a molecular sieve, it is necessary to ensure that the adsorbent has a certain density during the filling process. Therefore, the adsorbent needs to be compacted, but the compaction force should not be too strong to prevent damage to the adsorbent. Therefore, by providing an elastic member 40 to compact the molecular sieve, the compaction force is ensured, effectively preventing the flow of the molecular sieve and avoiding wear of the molecular sieve, while also avoiding damage to the adsorbent due to excessive compaction force.

[0114] In addition, by sleeve-mounting the elastic member 40 on the support member 210 and providing an elastic groove on the top cover portion 130 that abuts against the elastic member 40, not only can the elastic member 40 be positioned to improve assembly efficiency, but also the position of the elastic member 40 can be prevented from being offset during the assembly process, thereby affecting the compaction effect on the adsorption member.

[0115] It should also be noted that the elastic member 40 includes but is not limited to a spring.

[0116] like Figure 6 As shown, during assembly, first install the first sealing member 150 on the bottom cover portion 120, and install the tower body portion 110 on the bottom cover portion 120; then pre-install the third filter cotton and the partition portion and install them in the tower body portion 110, and install the adsorption assembly 30 in the tower body portion 110; then pre-install the first filter cotton, the second filter cotton and the support member 210 and install them together in the tower body portion 110, and fill the drying chamber with desiccant, and connect the support cover 2103 by threading; then install the second sealing member 160 on the top cover portion 130, abut one end of the spring against the limit groove 1305, and install the top cover portion 130 on the tower body portion 110, thereby completing the assembly.

[0117] Example 3

[0118] like Figure 1 、 Figure 2 、 Figure 6 As shown, the molecular tower includes a tower body component 10, a drying component 20 and an adsorption component; the drying component 20 is arranged in the tower body component 10, and the drying component 20 is used to dry the gas to be separated; the adsorption component 30 is arranged in the tower body component 10, the adsorption component 30 surrounds the drying component 20, and the adsorption component 30 can separate the target gas from the gas to be separated.

[0119] As can be seen from the above, by arranging the drying component 20 to absorb the water molecules in the gas to be separated, the humidity of the gas to be separated is reduced to achieve drying of the gas to be separated; by arranging the adsorption component around the drying component 20, it is ensured that the drying component 20 is located on the movement path of the gas to be separated, so that the gas to be separated is fully in contact with the drying component 20, so as to further improve the drying effect and drying efficiency, thereby improving the service life and separation capacity of the molecular sieve and ensuring the separation effect of the molecular tower.

[0120] It should be noted that the adsorption assembly 30 includes an adsorption member. When the adsorption member is in a granular form, for example, when the adsorption member is a molecular sieve, the adsorption assembly 30 is formed by filling and compacting the adsorption member.

[0121] It should also be noted that, taking the molecular tower used to prepare oxygen as an example, the gas to be separated is air, the target gas is oxygen, and the adsorption element is a molecular sieve. The molecular sieve can quickly adsorb nitrogen and other gases in the air and separate oxygen, thereby completing the preparation of oxygen.

[0122] like Figure 1 、 Figure 2 、 Figure 6 As shown, in some embodiments, the drying component 20 includes a support member 210 and a desiccant; the support member 210 has a drying chamber; the desiccant is arranged in the drying chamber; wherein the cross-sectional width of the support member 210 gradually decreases from top to bottom along the height direction, and a plurality of through holes 2104 are provided on the side wall of the support member 210.

[0123] By gradually decreasing the maximum width of the cross section of the support member 210 from top to bottom along the height direction, the resistance to the flow of the gas to be separated can be effectively reduced, making the flow of the gas to be separated smoother, thereby improving the drying efficiency. Furthermore, compared to a cylindrical structure, the support member 210 of the present invention can provide a larger space in the adsorption chamber, thereby accommodating more adsorbents within the adsorption chamber and improving the separation effect of the adsorption assembly 30.

[0124] It should be noted that the desiccant is in granular form, and includes but is not limited to silica gel desiccant, calcium chloride desiccant, and fiber desiccant. The above desiccant has the characteristics of excellent moisture absorption performance and long service life.

[0125] It should also be noted that if Figure 1 As shown, the height direction is parallel to the Z direction.

[0126] It should also be noted that the cross section of the support member 210 is a cross section of the support member 210 perpendicular to the height direction, for example, Figure 2 、 Figure 6 、 Figure 7 As shown, when the cross section of the support member 210 is circular, the cross section width of the support member 210 is the diameter.

[0127] It should also be noted that the multiple through holes 2104 are arranged at equal intervals around the support member 210 in the circumferential direction, and the multiple through holes 2104 on the same circumference form a through hole 2104 group, and the multiple through hole 2104 groups are arranged at intervals along the height direction.

[0128] like Figure 6 、 Figure 7As shown, in some embodiments, the support member 210 includes a main body 2101, a limiting edge 2102 and a support cover 2103; the main body 2101 extends in the height direction, and the opening of the drying chamber is arranged on the top of the main body 2101; the limiting edge 2102 surrounds the side wall of the main body 2101, and a plurality of air inlet holes 2105 are arranged on the limiting edge 2102; the support cover 2103 is arranged on the top of the main body 2101; wherein, the cross-sectional width of the limiting edge 2102 is greater than the cross-sectional width of the main body 2101, so as to form a step structure that abuts the top of the adsorption assembly 30.

[0129] The main body 2101 is provided to provide a structural basis for placing the desiccant; the cross-sectional width of the limiting edge 2102 is set to be larger than the cross-sectional width of the main body 2101, and the step mechanism is used to provide a structural basis for limiting the support 210, compacting the molecular sieve and preventing the molecular sieve from flowing; and the air inlet 2105 is provided to introduce the gas to be separated into the drying component 20 and the adsorption component.

[0130] It should be noted that the cross-sectional width of the main body 2101 gradually decreases from top to bottom along the height direction, and a plurality of through holes 2104 are provided on the side wall of the main body 2101 .

[0131] It should also be noted that the limiting edge 2102 includes but is not limited to being connected to the main body 2101 by being integrally formed with the main body 2101 or by being welded to the main body 2101.

[0132] It should also be noted that the cross section of the limiting edge 2102 is a cross section of the limiting edge 2102 perpendicular to the height direction, for example, Figure 6 、 Figure 7 As shown, when the cross section of the limiting edge 2102 is a circular ring, the cross section width of the limiting edge 2102 is the diameter.

[0133] It should also be noted that the support cover 2103 is connected to the main body 2101 including but not limited to being connected by threaded connection.

[0134] like Figure 6 As shown, in some embodiments, the drying component 20 includes a first filter element 220 and a second filter element 230; the first filter element 220 is arranged on the outer wall of the main body 2101, and the first filter element 220 covers the through hole 2104; the second filter element 230 is arranged on the limiting edge 2102, and the second filter element 230 covers the air inlet 2105.

[0135] By setting the first filter element 220 to cover the through hole 2104 and the second filter element 230 to cover the air inlet hole 2105, not only can the gas to be separated be filtered to reduce impurities in the gas to be separated, but also the adsorption element can be prevented from clogging the through hole 2104 and the air inlet hole 2105, or entering the drying chamber through the through hole 2104.

[0136] It should be noted that the first filter element 220 and the second filter element 230 are filter cottons. For example, the first filter element 220 and the second filter element 230 are glass fiber filter cottons.

[0137] It should also be noted that if Figure 6 As shown, the cross-sectional width of the first filter element 220 gradually decreases from top to bottom along the height direction, and a through groove matching with the main body 2101 is provided on the first filter element 220, and the through groove and the main body 2101 are interference fit.

[0138] It should also be noted that a side groove is provided on the top of the limiting side 2102 , and the second filter element 230 is provided in the side groove.

[0139] In some embodiments, the cross-sectional width of the desiccant is smaller than the aperture of the through hole 2104 .

[0140] By limiting the cross-sectional width of the desiccant to be smaller than the aperture of the through hole 2104 , the desiccant is prevented from clogging the through hole 2104 , thereby affecting the flow of the gas to be separated, and further affecting the separation effect and the drying effect.

[0141] It should be noted that the cross section of the desiccant is circular, and the width of the cross section of the desiccant is the diameter.

[0142] It should also be noted that the cross-sectional width of the desiccant cannot be too small. For example, the cross-sectional width of the desiccant is 0.1 of the aperture of the through hole 2104. If it is too small, the desiccant will accumulate in the through hole 2104 and even squeeze the first filter element 220, causing the first filter element 220 to deform.

[0143] like Figure 2 、 Figure 6As shown, in some embodiments, the tower body assembly 10 includes a tower body portion 110, a bottom cover portion 120 and a top cover portion 130; the bottom cover portion 120 is arranged on one end of the tower body portion 110, and an air outlet structure 1201 is provided on the bottom cover portion 120; the top cover portion 130 is arranged on the end of the tower body portion 110 away from the bottom cover portion 120, and an air intake structure 1301 connected to the air intake hole 2105 is provided on the top cover portion 130; the partition 140 is arranged in the tower body portion 110, the partition 140 abuts against the bottom cover portion 120, and a plurality of air outlet holes 1401 connected to the air outlet structure 1201 are provided on the partition 140; wherein, the support member 210 is arranged in the tower body portion 110, and the support member 210, the tower body portion 110 and the partition 140 jointly form an adsorption chamber, and the adsorption assembly 30 is arranged in the adsorption chamber.

[0144] By providing the tower body 110 , the bottom cover 120 , the top cover 130 and the partition 140 , the tower assembly 10 forms a split structure, which is not only convenient for assembly and disassembly, but also convenient for replacement of desiccant and adsorbent.

[0145] It should be noted that the number of tower body assemblies 10 can be one or more, and each tower body assembly 10 is provided with a drying assembly 20 and an adsorption assembly 30; when the number of tower body assemblies 10 is multiple, the multiple bottom cover parts 120 can be independent of each other and split structures, or can be connected as an integrated structure; the multiple top cover parts 130 can be independent of each other and split structures, or can be connected as an integrated structure;

[0146] For example, Figure 1 、 Figure 2 As shown, there are two tower body assemblies 10 , each of which is provided with a drying assembly 20 and an adsorption assembly 30 . The two bottom cover parts 120 are connected as an integral structure, and the two top cover parts 130 are connected as an integral structure.

[0147] It should also be noted that the tower body 110 and the bottom cover 120 are pre-fixed by threaded connection and then fixed by screw connection for the second time; the tower body 110 and the top cover 130 are pre-fixed by threaded connection and then fixed by screw connection for the second time.

[0148] It should also be noted that if Figure 3 As shown, at least one first sealing member 150 is provided between the bottom cover portion 120 and the tower body portion 110 to improve sealing and reduce gas leakage; at least one first sealing groove is provided on the bottom cover portion 120, and at least one first sealing groove corresponds to at least one first sealing member 150 one-to-one, and the first sealing member 150 is provided in the corresponding first sealing groove.

[0149] It should also be noted that if Figure 4As shown, at least one second sealing member 160 is provided between the top cover portion 130 and the tower body portion 110 to improve sealing and reduce gas leakage; at least one second sealing groove is provided on the top cover portion 130, and at least one second sealing groove corresponds to at least one second sealing member 160 one-to-one, and the second sealing member 160 is provided in the corresponding second sealing groove.

[0150] like Figure 6 As shown, in some embodiments, the tower assembly 10 includes a third filter element 180 disposed on the partition 140 , and the third filter element 180 covers at least a portion of the air outlet 1401 .

[0151] By setting the third filter element 180 to cover the air outlet 1401, not only can the gas to be separated be filtered to reduce impurities in the gas to be separated, but also the adsorption element can be prevented from clogging the air outlet 1401 or leaking through the air outlet 1401.

[0152] It should be noted that the third filter element 180 is filter cotton, for example, the third filter element 180 is glass fiber filter cotton.

[0153] In some embodiments, the ratio of the height of the support member 210 to the height of the adsorption chamber is 0.3-0.6.

[0154] By limiting the height between the support member 210 and the adsorption chamber, the volume of the drying chamber is prevented from being too large or too small, thereby achieving both the drying effect and the separation effect. When the height ratio of the support member 210 to the adsorption chamber is less than 0.3, the height of the support member 210 is too small, resulting in a small volume of the drying chamber and poor drying performance, which in turn affects the separation effect of the molecular sieve and shortens the service life of the molecular sieve; when the height ratio of the support member 210 to the adsorption chamber is greater than 0.6, the height of the support member 210 is too large, resulting in a small volume of the adsorption chamber, a reduction in adsorbents, and affecting the separation effect of the molecular sieve.

[0155] It should be noted that if Figure 2 As shown, the height of the support member 210 is L1, and the height of the adsorption chamber is L2, that is, the ratio of L1 to L2 is 0.3-0.6.

[0156] like Figure 2 、 Figure 6 As shown, in some embodiments, the air outlet structure 1201 includes an air outlet groove 1202, an air outlet port 1203 and an air outlet transition cavity; the air outlet groove 1202 is arranged on the side of the bottom cover portion 120 close to the tower body portion 110, and the air outlet groove 1202 is connected to the air outlet hole 1401; the air outlet port 1203 is arranged on the side of the bottom cover portion 120 close to the tower body portion 110; the air outlet transition cavity is arranged in the bottom cover portion 120, and the two ends of the air outlet transition cavity are respectively connected to the air outlet groove 1202 and the air outlet port 1203.

[0157] By arranging the gas outlet groove 1202, the gas outlet port 1203 and the gas outlet transition cavity on the bottom cover 120 to form an integrated gas outlet structure 1201, no additional pipelines are required, which is not only convenient for installation, but also prepares for the extraction of separated gas.

[0158] It should be noted that the air outlet groove 1202 is coaxially arranged with the tower body 110 , and the air outlet groove 1202 is provided with a plurality of reinforcing ribs to improve the structural strength.

[0159] like Figure 2 、 Figure 6 As shown, in some embodiments, the air intake structure 1301 includes an air intake groove 1302, an air intake port 1303 and an air intake transition cavity 1304; the air intake groove 1302 is arranged on a side of the top cover portion 130 close to the tower body portion 110, and the air intake groove 1302 is connected to the air intake hole 2105; the air intake port 1303 is arranged on a side of the top cover portion 130 close to the tower body portion 110; the air intake transition cavity 1304 is arranged in the top cover portion 130, and the two ends of the air intake transition cavity 1304 are respectively connected to the air intake groove 1302 and the air intake port 1303.

[0160] By providing an air inlet groove 1302, an air inlet port 1303 and an air inlet transition cavity 1304 on the top cover 130 to form an integrated air outlet structure 1201, no additional pipelines are required, which is not only convenient for installation but also prepares for the introduction of the gas to be separated.

[0161] It should be noted that the air outlet groove 1202 is coaxially arranged with the tower body 110 , and the air outlet groove 1202 is provided with a plurality of reinforcing ribs to improve the structural strength.

[0162] like Figure 2 、 Figure 6 As shown, in some embodiments, the molecular tower includes an elastic member 40, which is sleeved on the support member 210, one end of the elastic member 40 abuts against the limiting edge 2102, and the other end abuts against the top cover portion 130; wherein, a limiting groove 1305 for abutting against the elastic member 40 is provided on the top cover portion 130, and the limiting groove 1305 is located in the air inlet groove 1302.

[0163] It should be noted that when the adsorbent is granular, for example, a molecular sieve, it is necessary to ensure that the adsorbent has a certain density during the filling process. Therefore, the adsorbent needs to be compacted, but the compaction force should not be too strong to prevent damage to the adsorbent. Therefore, by providing an elastic member 40 to compact the molecular sieve, the compaction force is ensured, effectively preventing the flow of the molecular sieve and avoiding wear of the molecular sieve, while also avoiding damage to the adsorbent due to excessive compaction force.

[0164] In addition, by sleeve-mounting the elastic member 40 on the support member 210 and providing an elastic groove on the top cover portion 130 that abuts against the elastic member 40, not only can the elastic member 40 be positioned to improve assembly efficiency, but also the position of the elastic member 40 can be prevented from being offset during the assembly process, thereby affecting the compaction effect on the adsorption member.

[0165] It should also be noted that the elastic member 40 includes but is not limited to a spring.

[0166] like Figure 1 、 Figure 2 、 Figure 6 As shown, in some embodiments, the molecular tower includes an air inlet valve 50 and a gas storage tank 60; the air inlet valve 50 is arranged on the top cover portion 130, and the air outlet end of the air inlet valve 50 is connected to the air inlet structure 1301; the gas storage tank 60 is arranged on the bottom cover portion 120, and the air inlet of the gas storage tank 60 is connected to the air outlet structure 1201.

[0167] The inlet valve 50 is provided to control the on-off of the gas to be separated so as to control the flow of the gas to be separated entering the molecular tower; the gas storage tank 60 is provided to store the separated gas for user use.

[0168] It should be noted that if Figure 1 As shown, when the number of tower body assemblies 10 is two, the air intake valve 50 includes but is not limited to a four-way valve.

[0169] It should also be noted that the air inlet of the gas tank 60 is provided at the bottom of the gas tank 60 , and the gas tank 60 and the bottom cover portion 120 are pre-fixed by threaded connection and then secondary fixed by screw connection;

[0170] like Figure 5 As shown, at least one third sealing member 170 is provided between the gas storage tank 60 and the bottom cover portion 120 to improve sealing and reduce gas leakage; at least one third sealing groove is provided on the bottom cover portion 120, and at least one third sealing groove corresponds to at least one third sealing member 170 one-to-one, and the third sealing member 170 is provided in the corresponding third sealing groove.

[0171] It should also be noted that a pressure regulating valve 70 is installed at the exhaust port of the gas storage tank 60. The pressure regulating valve 70 is used to control the output pressure and flow of the gas at the exhaust port to prevent the pressure of the gas discharged from the exhaust port from being too high, which affects safety of use.

[0172] It should also be noted that if Figure 6As shown, during assembly, first install the first seal 150 and the third seal 170 on the bottom cover 120, install the tower body 110 and the gas tank 60 on the bottom cover 120, and install the pressure regulating valve 70 on the gas tank 60; then pre-install the third filter cotton and the partition and install them in the tower body 110, and install the adsorption assembly 30 in the tower body 110; then pre-install the first filter cotton, the second filter cotton and the support 210 and install them together in the tower body 110, and fill the drying chamber with desiccant, and connect the support cover 2103 by threading; then install the second seal 160 on the top cover 130, abut one end of the spring against the limit groove 1305, and install the top cover 130 on the tower body 110, thereby completing the assembly.

[0173] Example 4

[0174] An embodiment of the present invention further provides an oxygen concentrator, comprising the molecular tower of any embodiment of the present invention, thereby having all the technical effects brought about by the technical solutions of the above embodiments.

[0175] It should be noted that the oxygen generator includes a compressor, which pressurizes the air to form high-pressure air and then inputs it into the molecular tower. The compressor passes through the drying component 20 and the adsorption component 30 to adsorb water, nitrogen and other gases in the high-pressure air. The remaining oxygen is stored in the gas storage tank 60, thereby completing the oxygen production.

[0176] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0177] In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In the description of the present invention, a first feature "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact via another feature between them.

[0178] In the description of the present invention, “on”, “above” and “above” a first feature of a second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0179] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0180] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0181] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A molecular tower, characterized in that include: Tower assembly; A drying component is provided in the tower body component, and is used to dry the gas to be separated; as well as an adsorption assembly disposed in the tower body assembly, the adsorption assembly surrounding the drying assembly, and capable of separating the target gas from the gas to be separated; The drying assembly comprises: a support having a drying chamber; and a desiccant, disposed in the drying chamber; The cross-sectional width of the support member gradually decreases from top to bottom along the height direction, and a plurality of through holes are provided on the side wall of the support member; The support member comprises: a main body extending along the height direction, wherein the opening of the drying chamber is provided on the top of the main body; A limiting edge surrounds the side wall of the main body, and a plurality of air inlet holes are provided on the limiting edge; A support cover is provided on the top of the main body; Wherein, the cross-sectional width of the limiting edge is greater than the cross-sectional width of the main body, so as to form a step structure abutting against the top of the adsorption component.

2. The molecular tower according to claim 1, characterized in that The drying assembly comprises: a first filter element, disposed on an outer wall of the main body, the first filter element covering the through hole; The second filter element is arranged on the limiting edge, and the second filter element covers the air inlet.

3. The molecular tower according to claim 1 or 2, characterized in that: The cross-sectional width of the desiccant is smaller than the aperture of the through hole.

4. The molecular tower according to claim 1 or 2, characterized in that The tower assembly comprises: Tower body; A bottom cover portion is provided on one end of the tower body portion, and an air outlet structure is provided on the bottom cover portion; A top cover portion is provided on an end of the tower body away from the bottom cover portion, and an air intake structure connected to the air intake hole is provided on the top cover portion; a partition, disposed in the tower body, the partition abutting against the bottom cover, and provided with a plurality of air outlet holes communicating with the air outlet structure; The support member is arranged in the tower body, the support member, the tower body and the partition member together form an adsorption cavity, and the adsorption assembly is arranged in the adsorption cavity.

5. The molecular tower according to claim 4, characterized in that The ratio of the height of the support member to the height of the adsorption chamber is 0.3-0.

6.

6. The molecular tower according to claim 4, characterized in that The gas outlet structure comprises: An air outlet groove is provided on a side of the bottom cover portion close to the tower body portion, and the air outlet groove is connected to the air outlet hole; An air outlet is provided on a side of the bottom cover portion close to the tower body portion; The air outlet transition cavity is arranged in the bottom cover portion, and two ends of the air outlet transition cavity are respectively connected to the air outlet groove and the air outlet.

7. The molecular tower according to claim 4, characterized in that The air intake structure comprises: An air inlet groove is provided on a side of the top cover portion close to the tower body portion, and the air inlet groove is connected to the air inlet hole; An air inlet is provided on a side of the top cover portion close to the tower body portion; An air intake transition chamber is provided in the top cover portion, and two ends of the air intake transition chamber are respectively communicated with the air intake groove and the air intake port.

8. The molecular tower according to claim 7, characterized in that The molecular tower includes an elastic member, which is sleeved on the support member, one end of the elastic member abuts against the limiting edge, and the other end abuts against the top cover; Wherein, a limiting groove for abutting against the elastic member is provided on the top cover portion, and the limiting groove is located in the air inlet groove.

9. The molecular tower according to claim 4, characterized in that The molecular tower comprises: An air intake valve is provided on the top cover, and an air outlet end of the air intake valve is connected to the air intake structure; The gas storage tank is arranged on the bottom cover, and the gas inlet of the gas storage tank is connected to the gas outlet structure.

10. An oxygen concentrator, characterized in that: The method comprises the molecular tower according to any one of claims 1 to 9.

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