Oxygen production device

Abstract

The invention belongs to the technical field of oxygen production, and discloses an oxygen production device which comprises a case, an air compressor unit, a filter assembly, a cooling assembly and an oxygen production assembly. The case comprises an outer case body and an inner case body, the inner case body is located in the outer case body and inversely buckled on the bottom wall of the outer case body, the bottom wall of the outer case body is provided with an air outlet, the side wall of the outer case body is provided with an air suction opening and an oxygen exhaust connector, and the top of the inner case body is provided with a cold air opening. The air compressor unit is positioned in the inner case; the filtering assembly comprises a first-stage filter and a second-stage filter, the first-stage filter is located at the exhaust inlet, and the second-stage filter is located on the outer side wall of the inner machine box and communicates with an air inlet of the air compressor unit. The cooling assembly comprises a radiator and a cooling fan, and the radiator is communicated with the air compressor unit. The oxygen generation assembly is located in the outer case, the air inlet end of the oxygen generation assembly communicates with the radiator, and the air outlet end of the oxygen generation assembly communicates with the oxygen exhaust connector. The oxygen generation device is good in heat dissipation effect and high in operation stability; the internal space utilization rate of the case is high; and the service life is long.

Description

Technical Field

[0001] The present invention relates to the technical field of oxygen production, and in particular to an oxygen production device. Background Art

[0002] An oxygen concentrator is a medical device that separates oxygen from the air and provides high-concentration oxygen to patients requiring oxygen therapy. It plays a crucial role in emergency medical care, rehabilitation, and healthcare. The core principle of an oxygen concentrator is to separate oxygen from the air through physical or chemical methods. Common methods include molecular sieve adsorption, membrane separation, and chemical reaction. The molecular sieve adsorption method uses physical adsorption as the entire oxygen production process, without chemical reaction and environmental pollution. Therefore, oxygen concentrators using molecular sieve oxygen production technology are gaining increasing attention.

[0003] During the oxygen production process of a molecular sieve oxygen concentrator, the operation of the air compressor inside the chassis generates a large amount of heat. If the heat from the air compressor cannot be discharged in time, it can easily cause the air compressor to overheat and shut down, affecting the normal operation of the oxygen concentrator. Molecular sieve oxygen concentrators in the prior art usually use a fan to directly blow air to the air compressor to dissipate the heat from the air compressor. However, since the air compressor is usually installed inside the oxygen concentrator, the hot air from the fan blowing the air compressor easily accumulates inside the oxygen concentrator, resulting in the heat from the air compressor being unable to be quickly discharged. Otherwise, it will affect the operating stability of the air compressor and the operating stability of other components in the oxygen concentrator.

[0004] Therefore, it is urgent to propose an oxygen production device to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide an oxygen production device with good heat dissipation effect, high operational stability, compact structure, high utilization rate of the internal space of the chassis, and long service life.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] Oxygen generator, including:

[0008] The chassis comprises an outer chassis and an inner chassis, the inner chassis being located within the outer chassis and inverted on the bottom wall of the outer chassis, an exhaust vent being provided on the bottom wall of the outer chassis at a position opposite to the inner chassis, an air intake vent and an oxygen exhaust connector being provided on the side walls of the outer chassis, and a cold air vent being provided on the top of the inner chassis;

[0009] An air compressor unit is located in the inner chassis;

[0010] A filter assembly, comprising a primary filter and a secondary filter, wherein the primary filter is located at the air intake port, the secondary filter is located on the outer side wall of the inner chassis, and the secondary filter is connected to the air inlet of the air compressor unit;

[0011] A cooling assembly is located on the top of the inner chassis, the cooling assembly includes a radiator and a cooling fan, and the radiator is connected to the air compressor unit;

[0012] The oxygen production component is located in the outer chassis, the air inlet end of the oxygen production component is communicated with the radiator, and the air outlet end of the oxygen production component is communicated with the oxygen exhaust joint.

[0013] As an optional technical solution for the oxygen production device, the outer chassis includes a chassis body and a chassis cover. The chassis body includes a bottom plate and first side plates located on opposite sides of the bottom plate. The chassis cover includes a top plate and second side plates located on opposite sides of the top plate. The chassis cover is cross-matched with the chassis body so that the top plate and the bottom plate are opposite to each other. The two first side plates and the two second side plates are arranged to form the four side walls of the outer chassis.

[0014] As an optional technical solution for the oxygen production device, the box body also includes a first reinforcing rib, and the two ends of the first reinforcing rib extend from the side edges of the bottom plate to the side edges of the two first side plates respectively; the box cover also includes a second reinforcing rib, and the two ends of the second reinforcing rib extend from the side edges of the top plate to the side edges of the two second side plates respectively.

[0015] As an optional technical solution of the oxygen production device, the two second side panels are connected to the first reinforcing ribs via first bolts; and the two first side panels are connected to the second reinforcing ribs via second bolts.

[0016] As an optional technical solution for the oxygen production device, the inner chassis includes an inner panel and third side panels located on both sides of the inner panel, the cold air outlet is located on the inner panel, the two third side panels are arranged opposite to each other along the direction in which the two first side panels point to each other, and the other two opposite sides of the third side panels and the two opposite sides of the top panel are respectively abutted against the second side panels on the corresponding sides.

[0017] As an optional technical solution for the oxygen production device, the primary filter includes a shutter, filter cotton and a protective cover. The shutter is embedded in the air intake port, the filter cotton is located on the inner side of the shutter, and the protective cover is covered on the filter cotton.

[0018] As an optional technical solution for the oxygen production device, the oxygen production device also includes a gas storage tank, which is located on the side of the outer side of the inner chassis opposite to the secondary filter, and the top is connected to the oxygen production component, and the bottom is provided with a drain outlet, and a first solenoid valve is provided at the drain outlet.

[0019] As an optional technical solution of the oxygen production device, the oxygen production device further includes a water removal filter, and the water removal filter is located between the gas storage tank and the oxygen production component.

[0020] As an optional technical solution for the oxygen production device, the oxygen production component includes a molecular sieve cartridge, a second solenoid valve, an oxygen storage tank, a nitrogen exhaust muffler and a pressure regulating valve. The second solenoid valve is located at the air inlet end of the molecular sieve cartridge, the oxygen storage tank is connected to the oxygen outlet of the molecular sieve cartridge, the nitrogen exhaust muffler is located at the nitrogen exhaust port of the molecular sieve cartridge, and the pressure regulating valve is located at the outlet of the oxygen storage tank.

[0021] As an optional technical solution of the oxygen production device, the air compressor unit includes an oil-free scroll compressor and a direct-coupled drive motor, and the output end of the direct-coupled drive motor is connected to the oil-free scroll compressor.

[0022] Beneficial effects of the present invention:

[0023] The oxygen production device provided by the present invention includes a chassis, an air compressor unit, a filter assembly, a cooling assembly and an oxygen production assembly. The chassis includes an outer chassis and an inner chassis. The inner chassis is located in the outer chassis and is inverted on the bottom wall of the outer chassis. The bottom wall of the outer chassis is provided with an exhaust port, the side wall of the outer chassis is provided with an air intake port and an oxygen exhaust joint, and the top of the inner chassis is provided with a cold air port; the air compressor unit is located in the inner chassis, the filter assembly includes a primary filter and a secondary filter, the primary filter is located at the air intake port, and the secondary filter is connected to the air inlet of the air compressor unit; the cooling assembly is located at the top of the inner chassis and includes a radiator and a cooling fan; the oxygen production assembly is located in the outer chassis, and the air inlet end is connected to the radiator. In actual production, under the suction action of the cooling fan and the air compressor unit, a negative pressure is formed inside the chassis. The air in the external environment can enter the chassis (specifically, inside the outer chassis and outside the inner chassis) through the air intake of the outer chassis and after being filtered by the first-level filter. Part of the air entering the chassis enters the inner chassis through the cold air outlet under the action of the cooling fan, circulates in the inner chassis to dissipate heat to the air compressor unit, and then is discharged from the chassis through the exhaust port of the outer chassis; the other part of the air is filtered for the second time by the secondary filter and compressed by the air compressor unit. The compressed hot air enters the radiator for cooling and then enters the oxygen production component. Oxygen is produced by oxygen-nitrogen separation in the oxygen production component, and the oxygen can be discharged through the oxygen exhaust joint for user use. Therefore, the air flow generated by the operation of the cooling fan can dissipate heat from the air compressor unit and have the effect of cooling the air compressor unit. Since the air compressor unit is located in the inner chassis, the airflow generated by the suction negative pressure is used to dissipate heat from the air compressor unit and then discharged directly, which can reduce the accumulation of hot air in the chassis and prevent the heat generated by the air compressor unit from affecting other components in the chassis (outside the inner chassis), ensuring the stable heat dissipation of the air compressor unit and the stable operation of other components, thereby improving the operating stability of the entire oxygen production device; secondly, the cooling component is located at the top of the inner chassis, the cold air inlet is located at the top of the inner chassis, and the exhaust outlet is located at the bottom of the outer chassis and opposite to the inner chassis. The layout is reasonable, the structure inside the chassis is compact, and space is saved; thirdly, the secondary filter can perform secondary filtration on the air entering the chassis, reduce the entry of particulate impurities in the air into the air compressor unit, reduce the wear on the air compressor unit, and at the same time, the service life of the secondary filter is extended, thereby extending the service life of the oxygen production device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the oxygen production principle of the oxygen production device provided in an embodiment of the present invention;

[0025] Figure 2 Schematic diagram of the external structure of the oxygen production device provided by an embodiment of the present invention;

[0026] Figure 3 is an internal top view of an oxygen production device provided by an embodiment of the present invention;

[0027] Figure 4 yes Figure 3The cross-section at AA;

[0028] Figure 5 This is an assembly diagram of the box body and inner chassis provided by an embodiment of the present invention;

[0029] Figure 6 1 is a structural diagram of an air compressor unit provided by an embodiment of the present invention;

[0030] Figure 7 This is an assembly diagram of the box body, inner chassis and air compressor unit provided by an embodiment of the present invention;

[0031] Figure 8 1 is a schematic structural diagram of a box cover provided by an embodiment of the present invention;

[0032] Figure 9 Schematic diagram of the structure of the oxygen production assembly provided by an embodiment of the present invention.

[0033] In the picture:

[0034] 1. Chassis; 11. Outer chassis; 111. Case; 1111. Bottom plate; 11111. Exhaust vent; 11112. First threaded hole; 1112. First side panel; 11121. Oxygen exhaust connector; 1113. First reinforcing rib; 112. Case cover; 1121. Top plate; 11211. Second threaded hole; 1122. Second side panel; 1123. Second reinforcing rib; 1124. Handle; 12. Inner chassis; 121. Inner panel; 1211. Cold air vent; 122. Third side panel; 13. Chassis; 2. Air compressor unit; 21. Oil-free scroll compressor; 211. Fan 22. Direct-connected drive motor; 23. Shock absorber; 24. Base; 3. Filter assembly; 31. Primary filter; 311. Shutter; 312. Filter cotton; 313. Protective cover; 32. Secondary filter; 33. Gas collecting box; 331. Mounting hole; 4. Cooling assembly; 41. Radiator; 42. Cooling fan; 5. Oxygen generator assembly; 51. Molecular sieve cartridge; 52. Second solenoid valve; 53. Oxygen storage tank; 54. Nitrogen exhaust muffler; 55. Pressure regulating valve; 56. Nitrogen exhaust port; 57. Control circuit board; 6. Gas storage tank; 61. First solenoid valve; 7. Water removal filter; 8. One-way valve. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0036] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and 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 the present invention in specific circumstances.

[0037] 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. Furthermore, 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.

[0038] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0039] This embodiment provides an oxygen production device, which has good heat dissipation effect, high operational stability, compact structure, high utilization rate of the internal space of the chassis 1, and long service life.

[0040] Specifically, if Figures 1 to 9As shown, the oxygen generator includes a chassis 1, an air compressor unit 2, a filter assembly 3, a cooling assembly 4, and an oxygen generator unit 5. Chassis 1 includes an outer chassis 11 and an inner chassis 12. The inner chassis 12 is located within the outer chassis 11 and is inverted on the bottom wall of the outer chassis 11. An exhaust vent 11111 is provided on the bottom wall of the outer chassis 11 opposite the inner chassis 12. The side walls of the outer chassis 11 are provided with an air intake and an oxygen exhaust connector 11121. A cold air vent 1211 is provided on the top of the inner chassis 12. The air compressor unit 2 is located within the inner chassis 12. The filter assembly 3 includes a primary filter 31 and a secondary filter 32. The primary filter 31 is located at the air intake, and the secondary filter 32 is located on the outer side wall of the inner chassis 12. The secondary filter 32 is connected to the air inlet of the air compressor unit 2. The cooling assembly 4 includes a radiator 41 and a cooling fan 42, both located at the top of the inner chassis 12. The radiator 41 is connected to the air compressor unit 2. The oxygen production component 5 is located in the outer chassis 11 , and the air inlet end of the oxygen production component 5 is connected to the radiator 41 , and the air outlet end is connected to the oxygen exhaust connector 11121 .

[0041] In actual production, under the suction action of the cooling fan 42 and the air compressor unit 2, a negative pressure is formed in the chassis 1, and the air in the external environment can pass through the air intake of the outer chassis 11 and be filtered by the primary filter 31 before entering the chassis 1 (specifically, inside the outer chassis 11 and outside the inner chassis 12). Under the action of the cooling fan 42, a part of the air entering the chassis 1 enters the inner chassis 12 through the cold air outlet 1211, circulates in the inner chassis 12 to dissipate heat for the air compressor unit 2, and then is discharged from the chassis 1 through the exhaust port 11111 of the outer chassis 11; another part of the air is filtered for the second time by the secondary filter 32 and compressed by the air compressor unit 2. The compressed hot air enters the radiator 41 for cooling and then enters the oxygen production component 5. Oxygen is produced by oxygen-nitrogen separation in the oxygen production component 5, and the oxygen can be discharged through the oxygen exhaust joint 11121 for user use. Therefore, the air flow generated by the operation of the cooling fan 42 can dissipate the heat of the air compressor unit 2, and play a role in cooling the air compressor unit 2. Since the air compressor unit 2 is located in the inner chassis 12, the airflow generated by the suction negative pressure is used to dissipate the heat of the air compressor unit 2 and then directly discharged, which can reduce the accumulation of hot air in the chassis 1 and prevent the heat generated by the air compressor unit 2 from affecting other components in the chassis 1 (outside the inner chassis 12), ensuring the stable heat dissipation of the air compressor unit 2 and the stable operation of other components, thereby improving the operation of the entire oxygen production device. Secondly, the cooling component 4 is located at the top of the inner chassis 12, the cold air inlet 1211 is provided at the top of the inner chassis 12, and the exhaust port 11111 is located at the bottom of the outer chassis 11 and is opposite to the inner chassis 12. The layout is reasonable, the structure inside the chassis 1 is compact, and space is saved. Thirdly, the secondary filter 32 can perform secondary filtration on the air entering the chassis 1, reducing the amount of particulate impurities in the air entering the air compressor unit 2, which can reduce the wear on the air compressor unit 2. At the same time, the service life of the secondary filter 32 is extended, thereby extending the service life of the oxygen generator.

[0042] It should be noted that, in this embodiment, there are two cold air outlets 1211, one of which is directly opposite to the air compressor unit 2, so that the air can blow directly to the air compressor unit 2; the other is directly opposite to the radiator 41, so that the air flow can take away the heat of the radiator 41, cool the radiator 41 and then enter the inner chassis 12 for discharge, so as to avoid the heat of the radiator 41 from accumulating in the outer chassis 11.

[0043] Optionally, the outer chassis 11 includes a housing 111 and a cover 112. The housing 111 includes a bottom plate 1111 and first side plates 1112 located on opposite sides of the bottom plate 1111. The cover 112 includes a top plate 1121 and second side plates 1122 located on opposite sides of the top plate 1121. The cover 112 and the housing 111 intersect and mate, so that the top plate 1121 and the bottom plate 1111 form the top and bottom walls of the outer chassis 11. The two first side plates 1112 and the two second side plates 1122 surround and form the four side walls of the outer chassis 11. The outer chassis 11 adopts a structural form in which the groove-shaped housing 111 and the groove-shaped cover 112 intersect and mate, which is convenient for assembly. Compared with the box body 111 that is closed on all sides, this box body 111 has only two side walls (first side panels 1112) and the other two sides are open, so there is a large operating space when installing components inside the chassis 1; compared with the box body 111 with two adjacent side walls, the components inside the chassis 1 can be evenly distributed and fixed to the two opposite side walls of the box body 111 (first side panels 1112) to prevent the box body 111 from tipping over; compared with the box body 111 with only a bottom wall (bottom panel 1111), components can be fixed on both side walls of this box body 111, and the components inside the chassis 1 can be installed before the box cover 112 is closed.

[0044] In this embodiment, a handle 1124 is provided on the outer wall of the top plate 1121 (the side facing away from the inner chassis 12 ) to facilitate the installation of the box cover 112 onto the box body 111 .

[0045] Furthermore, the box body 111 also includes a first reinforcing rib 1113, with its ends extending from the side edges of the bottom plate 1111 to the side edges of the two first side plates 1112. The box lid 112 also includes a second reinforcing rib 1123, with its ends extending from the side edges of the top plate 1121 to the side edges of the two second side plates 1122. These side edges refer to the contact points between the box body 111 and the box lid 112. The first and second reinforcing ribs 1113, 1123 on the same side are arranged opposite each other and form a U-shaped shape, thereby increasing the structural strength of the connection between the box body 111 and the box lid 112.

[0046] Furthermore, the two second side panels 1122 are connected to the first reinforcing rib 1113 via a first bolt, and the two first side panels 1112 are connected to the second reinforcing rib 1123 via a second bolt. Specifically, a first threaded hole 11112 is provided on the outside of the bottom panel 1111, and a first bolt passes through the second side panel 1122 and connects to the first threaded hole 11112. A second threaded hole 11211 is provided on the outside of the top panel 1121, and a second bolt passes through the first side panel 1112 and connects to the second threaded hole 11211.

[0047] Optionally, the inner chassis 12 includes an inner panel 121 and a third side panel 122 located on both sides of the inner panel 121, the cold air outlet 1211 is located on the inner panel 121, the two third side panels 122 are arranged opposite to each other along the direction in which the two first side panels 1112 point to each other, and the other two opposite sides of the third side panel 122 and the opposite sides of the top panel 1121 are respectively abutted against the second side panels 1122 on the corresponding sides. A closed space of the inner chassis 12 can be formed by cooperating with the outer chassis 11 through one inner panel 121 and two third side panels 122, with low material consumption and low cost.

[0048] In this embodiment, the edges of the third side panels 122 are all provided with outer folding edges, and bolts pass through the outer folding edges and the bottom plate 1111 to connect the inner chassis 12 and the outer chassis 11 .

[0049] Optionally, a base frame 13 is provided at the bottom of the chassis 1 (external chassis 11 ) to facilitate placement and installation of the chassis 1 .

[0050] Optionally, continue as Figure 4 and Figure 5 As shown, the filter assembly 3 also includes an air collecting box 33 and a ventilation pipe (not shown in the figure). The air collecting box 33 is fixed to the outer wall of the inner chassis 12. A mounting hole 331 is provided on the air collecting box 33. The mounting hole 331 is used to install the secondary filter 32. The two ends of the ventilation pipe are connected to the air compressor unit 2 and the air collecting box 33.

[0051] In this embodiment, the air collecting box 33 is fixed to the outer wall of the third side plate 122 of the inner chassis 12 .

[0052] Optionally, a base 24 is fixed on the bottom wall of the outer case 11 located inside the inner case 12 , and the air compressor unit 2 is mounted on the base 24 via a shock absorber 23 .

[0053] In this embodiment, continue as Figure 6As shown, the air compressor unit 2 includes an oil-free scroll compressor 21 and a directly coupled drive motor 22, the output end of which is connected to the oil-free scroll compressor 21. The oil-free scroll compressor 21 is a high-efficiency air compressor that utilizes scroll compression technology and requires no lubricating oil. This avoids air pollution and offers smooth operation, low mechanical vibration, low noise, a long service life, and high efficiency and energy conservation. This overcomes the drawbacks of piston compressors, which suffer from a significant decrease in volumetric efficiency and low oxygen output when operating at high altitudes. The directly coupled drive motor 22 is a technology that directly connects the motor to the compressor, eliminating the need for belts or gear transmission, resulting in low energy loss and high efficiency.

[0054] Furthermore, a fan 211 for heat dissipation is provided on the top of the oil-free scroll compressor 21 to further improve the heat dissipation effect of the air compressor unit 2.

[0055] Optionally, the oxygen generator also includes an air tank 6, located outside the inner chassis 12 on the side opposite the secondary filter 32. Its top is connected to the oxygen generator 5, and its bottom is provided with a drain outlet, which is equipped with a first solenoid valve 61. Compressed air output by the air compressor 2 is cooled by the radiator 41 before entering the air tank 6 for further cooling and dehydration. This removes moisture from the air, preventing it from affecting the oxygen production efficiency of the oxygen generator 5 and thus extending its service life. The first solenoid valve 61 controls the opening and closing of the drain outlet, periodically draining accumulated water from the air tank 6 to the outside of the bottom of the chassis 1.

[0056] In this embodiment, the gas storage tank 6 and the gas collecting box 33 are respectively located on the outer side walls of the two third side plates 122 .

[0057] Furthermore, the oxygen production device also includes a dehydration filter 7, which is located between the gas storage tank 6 and the oxygen production component 5, and performs secondary dehydration on the air, further reducing the impact of moisture in the air on the oxygen production efficiency of the oxygen production component 5, thereby further extending the service life of the oxygen production component 5.

[0058] Optionally, the first-level filter 31 includes a louver 311, filter cotton 312 and a protective cover 313. The louver 311 is embedded in the air intake port, the filter cotton 312 is located on the inner side of the louver 311, and the protective cover 313 is covered on the filter cotton 312 to protect the filter cotton 312. The external environment enters the outer chassis 11 through the louver 311 and is preliminarily filtered by the filter cotton 312.

[0059] In this embodiment, air suction ports are provided on both first side panels 1112 of the box body 111 , but the oxygen exhaust connector 11121 is located on the first side panel 1112 on the side where the gas storage tank 6 is located.

[0060] Optionally, the oxygen production assembly 5 includes a molecular sieve cartridge 51, a second solenoid valve 52, an oxygen storage tank 53, a nitrogen exhaust muffler 54, and a pressure regulating valve 55. The second solenoid valve 52 is located at the air inlet end of the molecular sieve cartridge 51, the oxygen storage tank 53 is connected to the oxygen outlet of the molecular sieve cartridge 51, the nitrogen exhaust muffler 54 is located at the nitrogen exhaust port 56 of the molecular sieve cartridge 51, and the pressure regulating valve 55 is located at the outlet of the oxygen storage tank 53. The second solenoid valve 52 is used to control the amount of air entering the molecular sieve cartridge 51, the oxygen storage tank 53 is used to store the generated oxygen, the pressure regulating valve 55 is used to adjust the air pressure in the oxygen storage tank 53, and the nitrogen exhaust muffler 54 reduces the noise of nitrogen exhaust.

[0061] In this embodiment, the oxygen production device further includes a one-way valve 8, which is located between the pressure regulating valve 55 and the oxygen exhaust connector 11121. The one-way valve 8 allows oxygen to be output in only one direction.

[0062] Furthermore, the oxygen production assembly 5 further includes a control circuit board 57 . The control circuit board 57 is located on a side wall of the outer case 11 and is used to control the second solenoid valve 52 .

[0063] In this embodiment, the oxygen production assembly 5 is located inside the outer case 11 and on the top of the inner case 12 .

[0064] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An oxygen production device, characterized in that: include: A chassis (1) comprises an outer chassis (11) and an inner chassis (12), wherein the inner chassis (12) is located inside the outer chassis (11) and is buckled onto the bottom wall of the outer chassis (11), an air outlet (11111) is provided at a position of the bottom wall of the outer chassis (11) opposite to the inner chassis (12), an air intake and an oxygen exhaust joint (11121) are provided on the side wall of the outer chassis (11), and a cold air outlet (1211) is provided on the top of the inner chassis (12); An air compressor unit (2) is located in the inner chassis (12); A filter assembly (3) comprising a primary filter (31) and a secondary filter (32), wherein the primary filter (31) is located at the air intake port, the secondary filter (32) is located on the outer side wall of the inner case (12), and the secondary filter (32) is in communication with the air inlet of the air compressor unit (2); A cooling assembly (4) is located on the top of the inner chassis (12), the cooling assembly (4) includes a radiator (41) and a cooling fan (42), and the radiator (41) is in communication with the air compressor unit (2); The oxygen production component (5) is located in the outer case (11), the air inlet end of the oxygen production component (5) is connected to the radiator (41), and the air outlet end is connected to the oxygen exhaust connector (11121).

2. The oxygen production device according to claim 1, characterized in that The outer case (11) comprises a case body (111) and a case cover (112); the case body (111) comprises a bottom plate (1111) and first side plates (1112) located on opposite sides of the bottom plate (1111); the case cover (112) comprises a top plate (1121) and second side plates (1122) located on opposite sides of the top plate (1121); the case cover (112) and the case body (111) are cross-matched so that the top plate (1121) and the bottom plate (1111) are opposite to each other; the two first side plates (1112) and the two second side plates (1122) are arranged to form four side walls of the outer case (11).

3. The oxygen production device according to claim 2, characterized in that The box body (111) further includes a first reinforcing rib (1113), the two ends of which extend from the side edges of the bottom plate (1111) to the side edges of the two first side plates (1112); the box cover (112) further includes a second reinforcing rib (1123), the two ends of which extend from the side edges of the top plate (1121) to the side edges of the two second side plates (1122).

4. The oxygen production device according to claim 3, characterized in that The two second side plates (1122) are connected to the first reinforcing rib (1113) via a first bolt; the two first side plates (1112) are connected to the second reinforcing rib (1123) via a second bolt.

5. The oxygen production device according to claim 2, characterized in that: The inner chassis (12) comprises an inner plate (121) and third side plates (122) located on both sides of the inner plate (121); the cold air outlet (1211) is located on the inner plate (121); the two third side plates (122) are arranged opposite to each other along the direction in which the two first side plates (1112) point to each other; and the other two opposite sides of the third side plates (122) and the two opposite sides of the top plate (1121) are respectively in contact with the second side plates (1122) on the corresponding sides.

6. The oxygen production device according to any one of claims 1 to 5, characterized in that: The primary filter (31) comprises a louver (311), filter cotton (312) and a protective cover (313); the louver (311) is embedded in the air inlet; the filter cotton (312) is located on the inner side of the louver (311); and the protective cover (313) is covered on the filter cotton (312).

7. The oxygen production device according to any one of claims 1 to 5, characterized in that: The oxygen production device further comprises a gas storage tank (6), which is located on the side of the outer side of the inner case (12) opposite to the secondary filter (32), and the top of the gas storage tank is connected to the oxygen production component (5), and the bottom is provided with a drain outlet, and the drain outlet is provided with a first solenoid valve (61).

8. The oxygen production device according to claim 7, characterized in that The oxygen production device further comprises a water removal filter (7), and the water removal filter (7) is located between the gas storage tank (6) and the oxygen production component (5).

9. The oxygen production device according to any one of claims 1 to 5, characterized in that: The oxygen production component (5) comprises a molecular sieve cartridge (51), a second solenoid valve (52), an oxygen storage tank (53), a nitrogen exhaust muffler (54) and a pressure regulating valve (55), wherein the second solenoid valve (52) is located at the air inlet end of the molecular sieve cartridge (51), the oxygen storage tank (53) is connected to the oxygen outlet of the molecular sieve cartridge (51), the nitrogen exhaust muffler (54) is located at the nitrogen exhaust port (56) of the molecular sieve cartridge (51), and the pressure regulating valve (55) is located at the outlet of the oxygen storage tank (53).

10. The oxygen production device according to any one of claims 1 to 5, characterized in that: The air compressor unit (2) comprises an oil-free scroll compressor (21) and a direct-connected drive motor (22), wherein the output end of the direct-connected drive motor (22) is connected to the oil-free scroll compressor (21).

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