Small membrane oxygen generator

Abstract

The utility model discloses a small-sized membrane oxygen generator, which comprises a shell, a sucking pump and at least two oxygen-enriched membrane groups are arranged in the shell, each oxygen-enriched membrane group comprises a rectangular frame and two oxygen-enriched membranes arranged on two opposite sides of the rectangular frame in parallel, and a gas chamber is defined by the two oxygen-enriched membranes and the rectangular frame; the input end of the sucking pump is communicated with the two gas cavities through pipe fittings at the same time, and an exhaust pipe connected with the output end of the sucking pump is arranged on the side wall of the shell. When the sucking pump works, negative pressure is generated on the two gas chambers at the same time, oxygen and nitrogen are enriched on the inner sides of the gas chambers after making contact with the outer surfaces of the two oxygen-enriched membranes for a period of time, nitrogen is enriched on the outer surfaces of the oxygen-enriched membranes, and external air makes contact with the four oxygen-enriched membranes at the same time; the air pump and the at least two oxygen-enriched membrane groups are arranged at intervals in the length direction or the width direction of the shell to realize compact layout, so that a certain oxygen generation requirement is realized with a smaller volume, and the oxygen-enriched oxygen generator is suitable for household use, transportation and carrying.

Description

TECHNICAL FIELD

[0001] The utility model relates to domestic appliance technical field especially relates to a small -size membrane oxygen generator. BACKGROUND

[0002] The principle of membrane oxygen generator is that the oxygen in air is preferentially passed through the membrane under the pressure difference driving to obtain the oxygen-enriched air when the permeation rate of each component in air is different. The traditional membrane oxygen generator is generally applied in medical environment, and the oxygen-enriched membrane group is a large area piece type, which is driven by the air pump to discharge after the gas passes through the oxygen-enriched membrane group, and the volume is large, which is not conducive to the family use and carrying use. In the related art, in order to get rid of the dependence on the commercial power, some membrane oxygen generators are powered by the external battery pack, and the battery pack and the membrane oxygen generator are connected through the wire, which is not conducive to carrying and transportation, and cannot continue to be used in the case of battery pack power failure. SUMMARY

[0003] In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a small membrane oxygen generator with small volume and compact structure layout.

[0004] According to the small membrane oxygen generator of the utility model embodiment, the shell is provided with an air pump and at least two oxygen-enriched membrane groups, two oxygen-enriched membrane groups and the air pump are arranged along the length direction or the width direction of the shell, the oxygen-enriched membrane group comprises a rectangular frame and two oxygen-enriched membranes arranged in parallel on opposite sides of the rectangular frame, a gas chamber is formed between the two oxygen-enriched membranes and the rectangular frame, the input end of the air pump is connected to the two gas chambers through a pipe, and the side wall of the shell is provided with an exhaust pipe connected to the output end of the air pump.

[0005] According to the small membrane oxygen generator of the utility model embodiment, at least the following beneficial effects are achieved:

[0006] The small membrane oxygen generator has the advantages that when the air pump works, negative pressure is generated in the gas chambers of the two oxygen-enriched membrane groups at the same time, oxygen and nitrogen contact the outer surfaces of the two oxygen-enriched membranes for a period of time, oxygen is enriched on the inner side of the gas chamber, nitrogen is enriched on the outer surface of the oxygen-enriched membrane, the external air contacts four oxygen-enriched membranes at the same time, the air pump and the at least two oxygen-enriched membrane groups are arranged in the length direction or the width direction of the shell to realize compact layout, so that certain oxygen production requirements are realized with small volume, and the small membrane oxygen generator is suitable for family use and transportation and carrying.

[0007] In some embodiments of the utility model, the middle part of rectangular frame is equipped with grid, the opposite two side walls of rectangular frame are equipped with annular limit slot which is located in the outer circle of grid, the four edges of oxygen -enriched membrane are equipped in annular limit slot, there is gap between grid and oxygen -enriched membrane, rectangular frame is equipped with suction pipe which is connected with grid, pipe fitting is connected with two suction pipes through three -way valve.

[0008] In some embodiments of the utility model, the rectangular frame is provided with a fixed support connected to the inner wall of the shell, and a support pillar extending along the thickness direction is arranged at each corner of the rectangular frame. One end of the support pillar is provided with a plug-in column, and the other end of the support pillar is provided with a plug-in hole matched with the plug-in column.

[0009] In some embodiments of the utility model, the opposite two side walls of the shell are respectively provided with an air inlet and an air outlet, and the shell is internally provided with a fan for driving external gas to enter from the air inlet and then exit from the air outlet.

[0010] In some embodiments of the utility model, the shell is detachably provided with a battery assembly fixed thereto, and the battery assembly is electrically connected to the air suction pump through a circuit board.

[0011] In some embodiments of the utility model, the surface of the shell is concavely provided with a sliding groove, the battery assembly has a box body slidingly installed in the sliding groove, the groove bottom of the sliding groove is provided with a female terminal or a male plug, the box body is provided with a male plug matched with the female terminal or a female terminal matched with the male plug, and a locking mechanism capable of locking or unlocking the relative position between the box body and the sliding groove is arranged.

[0012] In some embodiments of the utility model, the locking mechanism comprises a locking block telescopically arranged in the sliding groove, the box body is provided with a clamping groove matched with the locking block, the locking block is connected with an elastic member for driving the locking block to extend into the clamping groove, and the locking block is connected with an unlocking member for driving the locking block to move away from the clamping groove.

[0013] In some embodiments of the utility model, the battery assembly further comprises a battery unit arranged in the box body, a first charging interface connected to the battery unit is arranged on the side wall of the box body, and a functional button and a second charging interface located on the surface of the shell are arranged on the circuit board.

[0014] In some embodiments of the utility model, the bottom of the air suction pump is provided with a base, and the base is connected to the inner bottom wall of the shell through a plurality of shock-absorbing buffer components.

[0015] In some embodiments of the utility model, the bottom of the shell is provided with a plurality of mounting holes corresponding to the shock absorbing and buffering components, the shock absorbing and buffering components comprise a guide column arranged on the base and extending downward, the end of the guide column is arranged in the mounting hole and has an anti -drop part, the guide column is provided with a rubber sleeve tightly fitted with the inner peripheral wall of the mounting hole and a spring member abutting against the base and the shell at both ends.

[0016] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further illustrated below in combination with the drawings and embodiments.

[0018] Figure 1 It is a state schematic diagram of one embodiment of small membrane oxygen generator of the utility model;

[0019] Figure 2 It is Figure 1 It is a structure exploded schematic diagram of embodiment;

[0020] Figure 3 It is Figure 1 It is a sectional schematic diagram of one embodiment;

[0021] Figure 4 It is Figure 3 It is a local enlarged schematic diagram of A of the part;

[0022] Figure 5 It is a sectional schematic diagram of one embodiment of shock absorbing and buffering component;

[0023] Figure 6 It is a structure exploded schematic diagram of two oxygen enrichment membrane groups.

[0024] REFERENCE SIGNS:

[0025] Housing 100; air inlet 110; air outlet 120; sliding groove 130; female end connector 131; mounting hole 140; air extraction pump 200; pipe 210; exhaust pipe 220; three-way valve 230; base 240; oxygen-enriched membrane group 300; rectangular frame 310; grid 311; annular limiting groove 312; air suction pipe 313; support column 314; plug-in column 315; oxygen-enriched membrane 320; fixed support 330; battery assembly 400; box body 410; male plug 411; battery cell 420; first charging interface 430; circuit board 500; function button 510; second charging interface 520; shock-absorbing buffer assembly 600; guide column 610; anti-dropping part 620; rubber sleeve 630; spring piece 640; locking mechanism 700; locking block 710; clamping groove 720; elastic piece 730; unlocking piece 740. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0027] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0028] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If the first, second, etc. are described, they are only used to distinguish technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0029] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected; can be mechanical connection, also can be electrical connection; can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0030] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 6 , the utility model discloses a small -size membrane oxygen generator, include: casing 100, the casing 100 is equipped with suction pump 200 and at least two oxygen -enriched membrane group 300, two oxygen -enriched membrane group 300 and the suction pump 200 along the length direction or width direction of casing 100 interval arrangement, oxygen -enriched membrane group 300 includes rectangular frame 310 and two parallelly arranged oxygen -enriched membrane 320 of opposite sides of rectangular frame 310, two oxygen -enriched membrane 320 and rectangular frame 310 between the gas chamber is enclosed, the input end of suction pump 200 is connected simultaneously two gas chamber through pipe fitting 210, the lateral wall of casing 100 is equipped with the exhaust pipe 220 connected with the output end of suction pump 200.

[0031] The small -size membrane oxygen generator of above structure produces negative pressure simultaneously to the gas chamber of two oxygen -enriched membrane group 300 when suction pump 200 works, and oxygen and nitrogen contact the outer surface of two oxygen -enriched membrane 320 after a period of time, and oxygen is enriched on the inside of gas chamber, and nitrogen is enriched on the outer surface of oxygen -enriched membrane 320, and external air contacts four oxygen -enriched membranes 320 simultaneously, and suction pump 200 and at least two oxygen -enriched membrane group 300 are arranged in the length direction or width direction of casing 100 interval to realize compact layout, so that certain oxygen production requirement is realized with smaller volume, and it is applicable to family use and transportation carrying.

[0032] Referring to Figure 3 and Figure 6In some embodiments of the utility model, the middle part of rectangular frame 310 is equipped with grid 311, the setting of grid 311 helps oxygen-enriched membrane 320 to keep tension or flat state, effectively avoids the phenomenon of wrinkling, the opposite two side walls of rectangular frame 310 are equipped with annular limiting groove 312 located at the periphery of grid 311, the four peripheral edges of corresponding oxygen-enriched membrane 320 are equipped in annular limiting groove 312, the gap between grid 311 and oxygen-enriched membrane 320 makes each square of grid 311 intercommunicate, rectangular frame 310 is equipped with suction pipe 313 connected with grid 311, pipe fitting 210 and two suction pipes 313 are connected through three-way valve 230. Specifically, the four peripheral edges of oxygen-enriched membrane 320 can be fixed in annular limiting groove 312 by bonding, ensuring that the gas can form the oxygen-enriched gas in the gas chamber only by passing through oxygen-enriched membrane 320, and the oxygen-enriched gas is sucked into exhaust pipe 220 after being sucked by suction pump 200 through suction pipe 313.

[0033] Referring to Figure 6 In some embodiments of the utility model, rectangular frame 310 is equipped with fixed support 330 connected to the inner wall of shell 100, the four corners of rectangular frame 310 are equipped with support column 314 extending along its thickness direction, one end of support column 314 is equipped with insertion column 315, the other end of support column 314 is equipped with insertion hole matched with insertion column 315. It can be understood that two oxygen-enriched membrane groups 300 with the same structure can be spliced together through the above structure, forming the effect that two oxygen-enriched membrane groups 300 overlap along the thickness direction, further improving the utilization rate of the internal space of shell 100 and the structural compactness of membrane oxygen generator. Wherein, fixed support 330 can be connected to the inner wall of shell 100 by screw fastening.

[0034] Referring to Figure 2 In some embodiments of the utility model, in order to ensure the oxygen content in the gas passing through oxygen-enriched membrane 320, the gas outside oxygen-enriched membrane 320 is fully replaced, air inlet 110 and air outlet 120 are respectively arranged on the opposite two side walls of shell 100, and the inside of shell 100 is equipped with fan for driving external gas to enter air inlet 110 and then exit from air outlet 120.

[0035] Referring to Figure 1 and Figure 2In some embodiments of the utility model, the shell 100 is detachably installed with the fixed battery assembly 400, the battery assembly 400 is electrically connected with the air suction pump 200 through the circuit board 500. It needs to be explained that when the battery assembly 400 is installed on the shell 100, it is fixed relative to the shell 100, which is convenient for user to carry, transport and use, and the situation of wire pulling is not occurred. When the battery assembly 400 is out of power, the battery assembly 400 can be taken off to charge, or another battery assembly 400 with sufficient power is replaced, so that the requirement of continuous use is met.

[0036] Referring to Figure 2 and Figure 3 In some embodiments of the utility model, the surface of the shell 100 is concave and is provided with a sliding groove 130, the battery assembly 400 has a box body 410 slidingly installed in the sliding groove 130, the groove bottom of the sliding groove 130 is provided with a female terminal 131 or a male plug 411, the box body 410 is provided with a male plug 411 matched with the female terminal 131 or a female terminal 131 matched with the male plug 411, and a locking mechanism 700 capable of locking or unlocking the relative position between the box body 410 and the sliding groove 130 is arranged. It can be understood that when the groove bottom of the sliding groove 130 is provided with the female terminal 131, the box body 410 is provided with the male plug 411, and when the groove bottom of the sliding groove 130 is provided with the male plug 411, the box body 410 is provided with the female terminal 131. When the box body 410 is slid along the sliding groove 130 to the position, the female terminal 131 and the male plug 411 are combined, the battery assembly 400 supplies power to the air suction pump 200 through the circuit board 500, at the same time, the locking mechanism 700 locks the relative position between the box body 410 and the sliding groove 130, preventing the battery assembly 400 from accidentally separating from the shell 100. Specifically, in this embodiment, the sliding groove 130 is arranged at the bottom of the shell 100 to form a drawer groove structure, the battery assembly 400 is supported on the desktop to avoid pressing on the entire membrane oxygen machine, correspondingly, the circuit board 500 is located at the top of the shell 100, and the top wall of the shell 100 is provided with a function button 510 connected with the circuit board 500.

[0037] Referring to Figure 3 and Figure 4In some embodiments of this utility model, the locking mechanism 700 includes a locking block 710 telescopically disposed in the sliding groove 130, the housing 410 is provided with a slot 720 that cooperates with the locking block 710, the locking block 710 is connected to an elastic member 730 that drives it to extend into the slot 720, and the locking block 710 is connected to an unlocking member 740 that drives it to leave the slot 720. Specifically, the locking block 710 has a driving ramp. When the housing 410 is inserted along the depth direction of the sliding groove 130, it abuts against the driving ramp of the locking block 710. The locking block 710 retracts into the interior of the sliding groove 130. When the locking block 710 is aligned with the slot 720, the locking block 710 extends into the slot 720 under the action of the elastic member 730, thus completing the relative position locking between the housing 410 and the sliding groove 130.

[0038] See Figure 2 In some embodiments of this utility model, the battery assembly 400 further includes a battery unit 420 disposed within the housing 410. A first charging interface 430 connected to the battery unit 420 is provided on the side wall of the housing 410. A function button 510 and a second charging interface 520 are provided on the surface of the housing 100. It is understood that when the battery assembly 400 is removed from the housing 100, it is charged using the first charging interface 430. During use, the battery assembly 400 can also be used without being removed, charging via the second charging interface 520. Furthermore, the function button 510 can be used to adjust the power and operating time of the air pump 200.

[0039] See Figure 2 and Figure 5 In some embodiments of this utility model, in order to reduce the vibration transmitted to the housing 100 when the air pump 200 is working and reduce the working noise, the bottom of the air pump 200 is provided with a base 240, and the base 240 is connected to the inner bottom wall of the housing 100 through multiple shock-absorbing and buffering components 600.

[0040] See Figure 5In some embodiments of the utility model, the bottom of the shell 100 is provided with a plurality of mounting holes 140 corresponding to the shock absorbing and buffering assembly 600, the shock absorbing and buffering assembly 600 comprises a guide column 610 arranged on the base 240 and extending downward, the end of the guide column 610 is arranged in the mounting hole 140 and has an anti -drop part 620, the guide column 610 is provided with a rubber sleeve 630 tightly fitted with the inner peripheral wall of the mounting hole 140 and a spring member 640 abutting on the base 240 and the shell 100 respectively. It can be understood that when the air suction pump 200 shakes, the guide column 610 moves along the extension direction of the spring member 640, compresses the spring member 640 at times and relaxes the spring member 640 at times, and the arrangement of the rubber sleeve 630 can effectively avoid the vibration of the guide column 610 from being transmitted to the shell 100.

[0041] The technical features of the above embodiments can be combined arbitrarily, and to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that the combinations are within the scope of the present application.

[0042] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A small membrane oxygen generator, characterized in that, include: A housing (100) is provided with a vacuum pump (200) and at least two oxygen-enriched membrane groups (300) inside the housing (100). The two oxygen-enriched membrane groups (300) and the vacuum pump (200) are arranged at intervals along the length or width direction of the housing (100). The oxygen-enriched membrane group (300) includes a rectangular frame (310) and two oxygen-enriched membranes (320) arranged parallel to each other on opposite sides of the rectangular frame (310). The two oxygen-enriched membranes (320) and the rectangular frame (310) form a gas chamber. The input end of the vacuum pump (200) is connected to the two gas chambers simultaneously through a pipe (210). The side wall of the housing (100) is provided with an exhaust pipe (220) connected to the output end of the vacuum pump (200).

2. A small membrane oxygen generator according to claim 1, characterized in that: The rectangular frame (310) has a grid (311) in the middle. The two opposite side walls of the rectangular frame (310) are provided with annular limiting grooves (312) located on the outer periphery of the grid (311). The corresponding four edges of the oxygen-enriching membrane (320) are located within the annular limiting grooves (312). There is a gap between the grid (311) and the oxygen-enriching membrane (320). The rectangular frame (310) is provided with an air intake pipe (313) that communicates with the grid (311). The pipe fitting (210) is connected to the two air intake pipes (313) through a three-way valve (230).

3. A small membrane oxygen generator according to claim 1, characterized in that: The rectangular frame (310) is provided with a fixed bracket (330) connected to the inner wall of the housing (100). Each of the four corners of the rectangular frame (310) is provided with a support column (314) extending along its thickness direction. One end of the support column (314) is provided with a plug-in post (315), and the other end of the support column (314) is provided with a plug hole that cooperates with the plug-in post (315).

4. A small membrane oxygen generator according to claim 1, characterized in that: An air inlet (110) and an air outlet (120) are respectively provided through the opposite side walls of the housing (100). Inside the housing (100) is a fan that drives external gas to enter through the air inlet (110) and exit through the air outlet (120).

5. A small membrane oxygen generator according to claim 1, characterized in that: A battery assembly (400) is detachably mounted on the housing (100) and fixed thereto. The battery assembly (400) is electrically connected to the air pump (200) via a circuit board (500).

6. A small membrane oxygen generator according to claim 5, characterized in that: The housing (100) has a recessed sliding groove (130) on its surface. The battery assembly (400) has a housing (410) that is slidably mounted in the sliding groove (130). The bottom of the sliding groove (130) is provided with a female connector (131) or a male plug (411). The housing (410) is provided with a male plug (411) that mates with the female connector (131) or a female connector (131) that mates with the male plug (411). A locking mechanism (700) is provided between the housing (410) and the sliding groove (130) to lock or unlock their relative positions.

7. A small membrane oxygen generator according to claim 6, characterized in that: The locking mechanism (700) includes a locking block (710) that is telescopically disposed in the sliding groove (130), the housing (410) is provided with a slot (720) that cooperates with the locking block (710), the locking block (710) is connected to an elastic member (730) that drives it to extend into the slot (720), and the locking block (710) is connected to an unlocking member (740) that drives it to leave the slot (720).

8. A small membrane oxygen generator according to claim 6, characterized in that: The battery assembly (400) further includes a battery unit (420) disposed in the housing (410). The side wall of the housing (410) is provided with a first charging interface (430) connected to the battery unit (420). The circuit board (500) is provided with a function button (510) and a second charging interface (520) located on the surface of the housing (100).

9. A small membrane oxygen generator according to claim 1, characterized in that: The bottom of the air pump (200) is provided with a base (240), which is connected to the inner bottom wall of the housing (100) through multiple shock-absorbing and buffering components (600).

10. A small membrane oxygen generator according to claim 9, characterized in that: The bottom of the housing (100) is provided with a plurality of mounting holes (140) corresponding one-to-one with the shock-absorbing buffer assembly (600). The shock-absorbing buffer assembly (600) includes a guide post (610) provided on the base (240) and extending downward. The end of the guide post (610) passes through the mounting hole (140) and has an anti-detachment part (620). The guide post (610) is provided with a rubber sleeve (630) that is tightly fitted with the inner peripheral wall of the mounting hole (140) and a spring member (640) at both ends abutting between the base (240) and the housing (100).

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