Oxygen concentration device

Abstract

To provide an oxygen concentration device that may provide miniaturization.SOLUTION: An oxygen concentration device 100 generates a concentrated oxygen gas from air. The oxygen concentration device 100 includes: a compressor 10 for generating a sound; and a storage part 20 for storing the compressor 10 inside thereof. The storage part 20 includes: inner wall parts 51A, 61A disposed along an outer shape of the compressor 10; and outer wall parts 51B, 61B respectively disposed along the inner wall parts 51A, 61A.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to oxygen concentrators. [Background technology]

[0002] The oxygen concentrator disclosed in Patent Document 1 compresses air taken in from the outside with a compressor. The oxygen concentrator generates oxygen-concentrated gas by absorbing and removing nitrogen from the compressed air. The oxygen concentrator includes a main body case and a housing disposed within the main body case. The compressor is housed in the housing. The oxygen concentrators disclosed in Patent Documents 2 and 3 have a similar configuration. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-99536 A [Patent Document 2] JP 2005-66150 A [Patent Document 3] JP 2010-102192 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the oxygen concentrators having the configurations disclosed in Patent Documents 1 to 3, the housing that houses the compressor is a rectangular parallelepiped. In such a configuration, the compressor occupies a relatively large proportion of the inside of the main body case, which in turn leads to an increase in the size of the oxygen concentrator.

[0005] The present disclosure has been made in consideration of the above-mentioned circumstances, and has an object to provide an oxygen concentrator that can be made compact. [Means for solving the problem]

[0006] The oxygen concentrator of the present disclosure comprises: An oxygen concentrator for producing oxygen-enriched gas from air, comprising: A sound source that generates a sound; A housing for covering the sound source; Equipped with The storage section includes: An inner wall portion that is arranged along the outer shape of the sound source; An outer wall portion disposed along the inner wall portion; has. Effect of the Invention

[0007] The invention of the present disclosure can provide an oxygen concentrator that can be made compact. [Brief description of the drawings]

[0008] [Figure 1] 1 is a diagram illustrating a schematic configuration of an oxygen concentrator according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view illustrating a storage section. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] 4 is a side cross-sectional view of the housing and the compressor as viewed from the axial direction of the motor. FIG. [Figure 6] FIG. 13 is a diagram showing experimental results of an experimental example. [Figure 7] 6 is a side cross-sectional view corresponding to FIG. 5, which illustrates a schematic view of a storage section, a compressor, and a silencer according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] In the following, embodiments of the present disclosure are listed and illustrated. [1] An oxygen concentrator that generates oxygen-enriched gas from air, A sound source that generates a sound; A housing portion that houses the sound source therein; Equipped with The storage section includes: An inner wall portion that is arranged along the outer shape of the sound source; An outer wall portion disposed along the inner wall portion; having Oxygen concentrator.

[0010] According to this configuration, the inner wall of the storage unit is arranged along the outer shape of the sound source, so that the sound source can be compactly covered by the inner wall. In addition, the outer wall is arranged along the inner wall, so that the storage unit has a compact outer shape. As a result, the oxygen concentrator in which the storage unit is provided can be made compact.

[0011] [2] The storage portion has a rib protruding from the outer wall portion. The oxygen concentrator device described in [1].

[0012] According to this configuration, the strength of the storage portion can be increased by the ribs.

[0013] [3] The inner wall portion has a protrusion protruding inward, A cushioning material capable of coming into contact with the sound source is disposed on the protruding portion. An oxygen concentrator according to [1] or [2].

[0014] According to this configuration, the cushioning material comes into contact with the sound source and can suppress the vibration of the sound source, etc. Furthermore, the cushioning material can be easily arranged by using the protruding portion as a marker, and the arrangement state can be easily confirmed.

[0015] [4] The storage portion has a plate portion integrally formed with the outer wall portion, A cooling fan is provided which is attached to the plate portion. An oxygen concentrator device according to any one of [1] to [3].

[0016] According to this configuration, there is no need to provide a separate member for attaching the cooling fan to the housing section.

[0017] [5] The storage portion has a plate portion integrally formed with the outer wall portion, A circuit board is attached to the plate portion. An oxygen concentrator device according to any one of [1] to [3].

[0018] According to this configuration, there is no need to provide a separate member for attaching the circuit board to the housing portion.

[0019] [6] A circuit board is provided that is attached to the plate portion, The cooling fan is attached to one surface of the plate portion, The circuit board is attached to the other surface of the plate portion. The oxygen concentrator according to [4].

[0020] According to this configuration, the cooling fan and the circuit board can be attached using both sides of the plate portion, which eliminates the need to provide separate members for attaching the cooling fan and the circuit board, allowing the oxygen concentrator to be made compact.

[0021] First Embodiment 1. Configuration of oxygen concentrator An oxygen concentrator 100 according to an example of the present disclosure is shown in Fig. 1. The oxygen concentrator 100 in Fig. 1 is a device that concentrates oxygen by adsorbing and removing nitrogen from the air, thereby generating oxygen-enriched gas and supplying it to a user.

[0022] In the following description, for convenience of explanation, the up-down direction shown in the drawings is defined as the up-down direction as it is, but it does not have to match the up-down direction in the actual arrangement of the oxygen concentrator 100, the compressor 10, and the storage unit 20.

[0023] The oxygen concentrator 100 includes a housing 101 that forms an outer shell. Housing 101 accommodates various components of the oxygen concentrator 100, such as a compressor 10 (see FIG. 5) and a housing unit 20, which will be described later.

[0024] The oxygen concentrator 100 includes an inlet passage (not shown) through which air is introduced from the outside. The air introduced from the inlet passage is sent to the compressor 10 via an outside air filter, a sound absorber, etc. The compressor 10 compresses the air introduced from the inlet passage and supplies the compressed air to a pair of adsorption cylinders (not shown).

[0025] An exhaust passage (not shown) for exhausting nitrogen from the pair of adsorption cylinders is provided with an exhaust buffer, a silencer, etc. The exhaust buffer reduces the noise generated when purging the exhaust nitrogen. The silencer is located downstream of the exhaust buffer and silences intermittent exhaust noise.

[0026] The supply path (not shown) through which oxygen-enriched gas is supplied from the pair of adsorption cylinders is equipped with a check valve, a product tank for storing the oxygen-enriched gas, a regulator for reducing the oxygen pressure, a flow regulator for adjusting the flow rate, an oxygen sensor for detecting the oxygen concentration, a bacterial filter for preventing the passage of bacteria, etc., a pressure sensor, etc.

[0027] 2. Compressor configuration A compressor 10, which corresponds to an example of a "sound source" of the present disclosure, is shown in Fig. 5. The compressor 10 generates sound. The compressor 10 is, for example, a reciprocating compressor that compresses air by changing the volume through the reciprocating motion of a piston. The compressor 10 includes a motor (not shown), a housing 41, a pair of cylinders 42, and a pair of heads 43.

[0028] The axial direction of the rotation shaft of the motor is parallel to the horizontal direction, for example. The housing 41 accommodates the motor. The housing 41 is, for example, cylindrical. The axial direction of the housing 41 is parallel to the axial direction of the rotation shaft of the motor.

[0029] The pair of cylinders 42 are provided in the upper part of the housing 41. A piston reciprocates in the cylinder 42. The axial direction of the cylinder 42 is parallel to the vertical direction, for example. The head 43 closes the opening at the top of the cylinder 42.

[0030] The housing 41 of the compressor 10 is provided with, for example, a nozzle (not shown) for introducing air from the outside, a hose (not shown), etc. Also, the housing 41 of the compressor 10 is provided with a nozzle (not shown), a hose (not shown), etc. for supplying compressed air to the adsorption cylinder.

[0031] Four springs 45 are provided at the four corners of the bottom of the housing 41. The springs 45 absorb vibrations between the bottom of the compressor 10 and the bottom of the casing 101.

[0032] 3.Construction of the storage section As shown in FIG. 5, the accommodation unit 20 accommodates the compressor 10 therein. The accommodation unit 20 is made of, for example, resin. As shown in FIG. 2, the accommodation unit 20 has a main body unit 50 and a lid unit 60. The accommodation unit 20 is configured into a box shape with an opening at the bottom by integrally assembling the lid unit 60 to the main body unit 50. The main body unit 50 and the lid unit 60 are, for example, single components that are integrally molded. The opening at the bottom of the accommodation unit 20 is fixed to the bottom of the housing 101.

[0033] 3-1.Main body configuration As shown in Fig. 3, the main body 50 is box-shaped with an open bottom and one side (the side to which the lid 60 is attached). The main body 50 includes a main body side wall 51, side walls 52 and 53, and an upper wall 54. The main body side wall 51 is a wall whose wall surface faces the lid 60. The side walls 52 and 53 are located on both sides of the main body side wall 51 in the horizontal direction. The upper wall 54 is located at the upper end of the main body side wall 51.

[0034] The main body side wall portion 51 is, for example, in the form of a plate with a substantially uniform thickness. As shown in Fig. 3 and Fig. 5, the main body side wall portion 51 includes an inner wall portion 51A and an outer wall portion 51B (see Fig. 5). The inner wall portion 51A constitutes the inner wall surface of the main body side wall portion 51. The outer wall portion 51B constitutes the outer wall surface of the main body side wall portion 51.

[0035] As shown in Fig. 3, the inner wall portion 51A includes a first convex portion 71A, a second convex portion 72A, a third convex portion 73A, a fourth convex portion 74A, and a flat portion 75A. The first convex portion 71A and the second convex portion 72A correspond to an example of a "convex portion" in the present disclosure. The first convex portion 71A, the second convex portion 72A, the third convex portion 73A, and the fourth convex portion 74A protrude inward (toward the side to which the lid portion 60 is assembled) with respect to the flat portion 75A. The first convex portion 71A, the second convex portion 72A, the third convex portion 73A, and the fourth convex portion 74A are each rectangular in a side view (seen from the side to which the lid portion 60 is assembled).

[0036] The first convex portion 71A and the second convex portion 72A constitute a portion of the upper end side of the inner wall portion 51A. The first convex portion 71A and the second convex portion 72A are aligned in the horizontal direction. The third convex portion 73A is adjacent to the first convex portion 71A on the lower side. The fourth convex portion 74A is adjacent to the second convex portion 72A on the lower side. The protrusion amount of the first convex portion 71A and the second convex portion 72A is larger than the protrusion amount of the third convex portion 73A and the fourth convex portion 74A. The lower end side of the third convex portion 73A and the fourth convex portion 74A constitutes a curved surface that is convex outward. The flat portion 75A constitutes a portion of the lower end side of the inner wall portion 51A.

[0037] A groove 76 extending in the vertical direction is provided between the first convex portion 71A and the third convex portion 73A and the second convex portion 72A and the fourth convex portion 74A. The groove 76 protrudes outward beyond the first convex portion 71A, the second convex portion 72A, the third convex portion 73A, and the fourth convex portion 74A. For example, a hose (not shown) is disposed in the groove 76.

[0038] The outer wall portion 51B includes a first recess (not shown), a second recess 72B (see FIG. 5), a third recess 73B (see FIG. 2), a fourth recess 74B (see FIG. 5), and a flat portion 75B. The first recess, the second recess 72B, the third recess 73B, and the fourth recess 74B are recessed inward (toward the side to which the lid portion 60 is attached). As shown in FIG. 5, the second recess 72B is disposed along the second convex portion 72A. The first recess has a similar configuration to the second recess 72B, and is disposed along the first convex portion 71A. As shown in FIG. 5, the fourth recess 74B is disposed along the fourth convex portion 74A. The third recess 73B has a similar configuration to the fourth recess 74B, and is disposed along the third convex portion 73A. The first recess and first convex portion 71A, the second recess 72B and the second convex portion 72A, the third recess 73B and the third convex portion 73A, the fourth recess 74B and the fourth convex portion 74A, and the flat portion 75A and the flat portion 75B each constitute the front and back surfaces of the main body side wall portion 51, spaced a certain distance apart (the plate thickness).

[0039] The upper wall 54 is provided with a pair of first openings 54A and second openings 54B. The first opening 54A is a rectangular hole penetrating in the vertical direction. A cooling fan 31 (described later) is disposed above each of the first opening 54A and the second opening 54B. The second opening 54B is a circular hole provided above the groove portion 76 and penetrating in the vertical direction. For example, a hose (not shown) is inserted into the second opening 54B.

[0040] 3-2. Lid structure As shown in Fig. 4, the lid portion 60 is box-shaped with an open bottom and one side (the side to which the main body portion 50 is attached). The lid portion 60 includes a lid side wall portion 61, side walls 62 and 63, and an upper wall 64. The lid side wall portion 61 is a wall portion whose wall surface faces the main body portion 50. The side walls 62 and 63 are located on both sides of the lid side wall portion 61 in the horizontal direction. The upper wall 64 is located at the upper end of the lid side wall portion 61.

[0041] The lid side wall portion 61 is, for example, in the form of a plate with a substantially uniform thickness. As shown in Figs. 4 and 5, the lid side wall portion 61 includes an inner wall portion 61A and an outer wall portion 61B (see Fig. 5). The inner wall portion 61A constitutes the inner wall surface of the lid side wall portion 61. The outer wall portion 61B constitutes the outer wall surface of the lid side wall portion 61.

[0042] As shown in Fig. 4, the inner wall portion 61A includes a fifth protrusion 65A, a sixth recess 66A, and a flat portion 67A. The fifth protrusion 65A corresponds to an example of a "protrusion" in the present disclosure. The fifth protrusion 65A protrudes inward (toward the side to which the main body portion 50 is assembled) from the flat portion 67A. The fifth protrusion 65A constitutes a portion on the upper end side of the inner wall portion 61A. The fifth protrusion 65A has a shape close to a horizontally long rectangle in a side view (seen from the side to which the main body portion 50 is assembled).

[0043] A sixth recess 66A recessed upward is provided at the center in the longitudinal direction of the lower end portion (wall portion extending in the protruding direction) of the fifth protrusion 65A. The flat portion 67A constitutes a portion on the lower end side of the inner wall portion 61A.

[0044] The outer wall portion 61B includes a fifth recess 65B, a sixth protrusion 66B, and a flat portion 67B. The fifth recess 65B is recessed inward (toward the side to which the main body portion 50 is attached). The fifth recess 65B is disposed along the fifth protrusion 65A. The fifth recess 65B and the fifth protrusion 65A, the sixth protrusion 66B and the sixth recess 66A, and the flat portion 67A and the flat portion 67B constitute the front and back surfaces of the lid side wall portion 61, which are spaced apart by a certain distance (corresponding to the plate thickness).

[0045] A third opening 68 is provided in a portion of the lower end (wall extending in the protruding direction) of the fifth protrusion 65A where the sixth recess 66A is not provided. The third opening 68 is a circular hole that penetrates in the vertical direction. For example, a hose (not shown) is inserted into the third opening 68.

[0046] 4. Compressor housing structure in housing section The inner walls 51A, 61A of the accommodating section 20 are disposed along the outer shape of the compressor 10. The outer wall 51B of the accommodating section 20 is disposed along the inner wall 51A. The outer wall 61B of the accommodating section 20 is disposed along the inner wall 61A.

[0047] As shown in Fig. 5, the second protrusion 72A (part of the inner wall portion 51A) of the main body portion 50 is disposed along the recess 10A of the compressor 10. The recess 10A is formed by the housing 41 and the cylinder 42. The housing 41 protrudes toward the main body portion 50 further than the cylinder 42. The second protrusion 72A fits into the recess 10A. The second recess 72B is disposed along the second protrusion 72A, and therefore also along the recess 10A.

[0048] Although not shown, the first convex portion 71A, like the second convex portion 72A, is also disposed along a recess similar to the recess 10A of the compressor 10. The first recess (not shown) is disposed along the first convex portion 71A, and therefore is also disposed along the recess along which the first convex portion 71A is disposed.

[0049] The fourth protrusion 74A (part of the inner wall portion 51A) of the main body 50 is disposed along the recess 10A of the compressor 10. The fourth protrusion 74A protrudes in the recess direction of the recess 10A. The curved surface on the lower end side of the fourth protrusion 74A is disposed along the outer circumferential surface of the housing 41. The fourth recess 74B is disposed along the fourth protrusion 74A, and therefore also along the recess 10A.

[0050] Although not shown, like the fourth protrusion 74A, the third protrusion 73A is also disposed along a recess similar to the recess 10A of the compressor 10. The third recess 73B (see FIG. 2) is disposed along the third protrusion 73A, and therefore is also disposed along the recess along which the third protrusion 73A is disposed.

[0051] The fifth protrusion 65A (part of the inner wall 61A) of the lid 60 is disposed along the recess 10B of the compressor 10. The recess 10B is provided on the opposite side of the compressor 10 from the recess 10A. The recess 10B is formed by the housing 41 and the cylinder 42. The housing 41 protrudes toward the lid 60 side beyond the cylinder 42. The fifth protrusion 65A is recessed into the recess 10B. The fifth recess 65B is disposed along the fifth protrusion 65A, and therefore is also disposed along the recess 10B. A part such as a nozzle or a hose connected to the compressor 10 may be inserted into the sixth recess 66A (part of the inner wall 61A) of the lid 60.

[0052] As described above, since the inner walls 51A, 61A of the storage unit 20 are arranged along the outer shape of the compressor 10, the compressor 10 can be compactly covered by the inner walls 51A, 61A. Furthermore, since the outer wall 51B is arranged along the inner wall 51A, and the outer wall 61B is arranged along the inner wall 61A, the storage unit 20 has a compact outer shape. As a result, the oxygen concentrator 100 in which the storage unit 20 is provided can be made compact.

[0053] Since the inner wall portions 51A, 61A of the storage portion 20 are arranged along the outer shape of the compressor 10, the volume of the storage portion 20 can be reduced compared to when the storage portion 20 has a rectangular parallelepiped shape. This increases the amount of cooling air flowing toward the compressor 10, which is a heat generating body, and makes it easier to push out the warm air inside the compressor 10, making it easier to cool the compressor 10. Furthermore, since the volume of the storage portion 20 can be reduced, the weight of the oxygen concentrator 100 can be reduced. Furthermore, since the volume of the storage portion 20 can be reduced, the amount of vibration-damping material or sound-absorbing material can be reduced when providing such material inside the storage portion 20.

[0054] 5. Rib configuration 2, the storage portion 20 has a rib 57 and a rib 69. The rib 57 protrudes from the outer wall portion 51B. The rib 69 protrudes from the outer wall portion 61B.

[0055] 2, the ribs 69 are provided in a lattice pattern on the outer wall portion 61B. Similarly to the ribs 69, the ribs 57 are provided in a lattice pattern on the outer wall portion 51B.

[0056] The ribs 57 and 69 can increase the strength of the storage section 20. The ribs 57 are also provided in the first recess (not shown), the second recess (not shown), the third recess 73B (see FIG. 2), and the fourth recess 74B (see FIG. 5). Compared to a configuration in which these recesses are not provided, even with the ribs 57 provided, the main body section 50 has a compact outer shape.

[0057] The rib 69 is also provided in the fifth recess 65B. However, even with the rib 69 provided, the cover portion 60 has a more compact outer shape than a configuration in which the fifth recess 65B is not provided.

[0058] 6. Composition of cushioning material As shown in Figs. 3 and 4, a cushioning material 21 is attached inside the storage section 20. The cushioning material 21 is, for example, a rubber member for shock absorption. The cushioning material 21 is arranged in the first convex portion 71A (see Fig. 3), the second convex portion 72A (see Fig. 3), the fifth convex portion 65A (see Fig. 4), and the groove portion 76 (see Fig. 3). The cushioning material 21 is, for example, in the shape of a rectangular plate. The cushioning material 21 is capable of contacting the head 43 of the compressor 10, etc.

[0059] The cushioning material 21 comes into contact with the cylinder 42, head 43, etc. of the compressor 10, thereby suppressing vibrations of the compressor 10. When attaching the cushioning material 21 to the storage section 20, the first convex portion 71A, the second convex portion 72A, the fifth convex portion 65A, and the groove portion 76 can be used as marks. This makes it easier to place the cushioning material 21 on these convex portions and groove portion 76, and makes it easier to check the placement state of the cushioning material 21.

[0060] 7. Cooling fan and circuit board configuration 2, the oxygen concentrator 100 includes a pair of cooling fans 31 and a circuit board 32. The cooling fan 31 cools the compressor 10. The circuit board 32 is a board on which a control circuit for controlling actuators such as the cooling fan 31 and the compressor 10 is mounted. The pair of cooling fans 31 and the circuit board 32 are attached to the housing portion 20.

[0061] 2, the storage section 20 has a plate section 55. The pair of cooling fans 31 and the circuit board 32 are attached to the plate section 55. The plate section 55 is integrally molded with the outer wall section 51B of the main body section 50. The plate section 55 is provided along an edge section (an edge section on the side on which the lid section 60 is attached) of the upper wall 54 of the main body section 50. The plate section 55 is provided on the upper wall 54 on the edge side (a side on which the lid section 60 is attached) of the pair of first openings 54A.

[0062] The pair of cooling fans 31 are attached to one surface of the plate portion 55 (the surface opposite the lid portion 60). The pair of cooling fans 31 are disposed above each of the pair of first openings 54A. The circuit board 32 is attached to the other surface of the plate portion 55 (the surface facing the lid portion 60).

[0063] In this way, the pair of cooling fans 31 and the circuit board 32 are attached to the plate portion 55 that is integrally molded with the outer wall portion 51B, so there is no need to provide a separate member for attaching the pair of cooling fans 31 and the circuit board 32 to the accommodation portion 20. The pair of cooling fans 31 and the circuit board 32 can be attached using both sides of the plate portion 55. Therefore, there is no need to provide separate members for attaching the pair of cooling fans 31 and the circuit board 32, and the oxygen concentrator 100 can be made compact.

[0064] 8. Experimental Example FIG. 6 shows the experimental results using a conventional storage section and the experimental results using the storage section 20 of the present disclosure. The storage section of Comparative Example 1 has a rectangular box shape. The storage section of Comparative Example 1 had a thickness (wall thickness) of 2 mm, a width (size in the short side direction when viewed from the top and bottom) of 25 mm, a depth (size in the long side direction when viewed from the top and bottom) of 225 mm, and a height of 230 mm. The thickness, width, depth, and height of the storage section 20 of Example 1 were approximately the same as those of the storage section 20 of Comparative Example 1. In the storage section 20 of Example 1, as described above, the inner wall portions 51A and 61A were configured to be arranged along the outer shape of the compressor 10. The storage section of Comparative Example 1 and the storage section 20 of Example 1 were made of resin.

[0065] In Comparative Example 1, a compressor (a compressor having the same configuration as compressor 10) was operated while being covered with a housing portion. Then, the cylinder temperature and the noise value were measured while the compressor was operating.

[0066] In Example 1, the compressor 10 was operated while being covered with the housing portion. Then, the temperature of the cylinder 42 and the noise value were measured while the compressor 10 was operating.

[0067] 6, the cylinder temperature when the compressor was operating was lower in Example 1 than in Comparative Example 1. This is because, in Example 1, inner wall portions 51A, 61A of accommodating portion 20 were arranged along the outer shape of compressor 10, so that the volume of accommodating portion 20 could be reduced compared to Comparative Example 1 (wherein the accommodating portion is a rectangular parallelepiped). This is thought to be because, in Example 1, the amount of cooling air flowing toward compressor 10, which is a heat generating body, increased, making it easier to push out warm air inside compressor 10 and to cool compressor 10.

[0068] 10, Example 1 had a noise value equivalent to that of Comparative Example 1. Even in the configuration in which the inner wall portions 51A, 61A of the accommodating portion 20 were arranged along the outer shape of the compressor 10 as in Example 1, the noise was reduced to the same extent as in Comparative Example 1 (the configuration in which the accommodating portion has a rectangular parallelepiped shape).

[0069] <Second embodiment> The oxygen concentrator of the second embodiment differs from the first embodiment in that it has a silencer in addition to a compressor as a sound source. In the description of the second embodiment, the same components as those of the first embodiment are given the same reference numerals and detailed description is omitted.

[0070] FIG. 7 shows a schematic diagram of the housing 220 and its internal configuration according to the second embodiment. The oxygen concentrator according to the second embodiment includes a silencer 210 in addition to the compressor 10 as the "sound source" of the present disclosure. The silencer 210 is disposed downstream of the exhaust buffer and functions to eliminate intermittent exhaust noise. The silencer 210 is disposed next to the compressor 10. The silencer 210 is disposed on the bottom of the housing 101. The height of the silencer 210 is lower than the height of the compressor 10, for example.

[0071] The accommodation portion 220 accommodates therein the compressor 10 and the silencer 210. The accommodation portion 220 has a main body portion 250 and a lid portion 60. The main body portion 250 differs from the main body side wall portion 51 of the main body portion 50 of the first embodiment mainly in the configuration of the main body side wall portion 251. The main body side wall portion 251 includes an inner wall portion 251A and an outer wall portion 251B.

[0072] As shown in FIG. 7, the inner wall portion 251A includes a first protruding portion 271A and a flat portion 275A. The first protruding portion 271A corresponds to an example of a "protruding portion" in the present disclosure. The first protruding portion 271A protrudes inward (to the side to which the lid portion 60 is assembled) with respect to the flat portion 275A. The outer wall portion 251B includes a first recessed portion 271B and a flat portion 275B. The first recessed portion 271B is recessed inward (to the side to which the lid portion 60 is assembled). The first recessed portion 271B is disposed along the first protruding portion 271A. The first protruding portion 271A and the first recessed portion 271B, and the flat portion 275A and the flat portion 275B respectively constitute the front and back surfaces of the main body side wall portion 251, which are separated by a certain distance (corresponding to the plate thickness).

[0073] The first protrusion 271A (part of the inner wall portion 251A) is disposed along the recess 10A of the compressor 10. The recess 10A is formed by the housing 41 and the cylinder 42. The housing 41 protrudes toward the main body portion 50 side beyond the cylinder 42. The first protrusion 271A fits into the recess 10A. The first recess 271B is disposed along the first protrusion 271A, and therefore also along the recess 10A.

[0074] The first protrusion 271A is also disposed along the recess 210A of the compressor 10. The recess 210A is formed by the compressor 10 (the housing 41 and the cylinder 42) and the silencer 210. The first protrusion 271A fits into the recess 210A. The first recess 271B is disposed along the first protrusion 271A, and therefore is also disposed along the recess 210A. The lower end (wall portion extending in the protruding direction) of the first protrusion 271A is disposed along the upper surface of the silencer 210.

[0075] In addition, in the inner wall portion 251A, a plurality of convex portions having a configuration similar to that of the first convex portion 271A may be provided with a groove portion therebetween, like the first convex portion 71A and the second convex portion 72A in the first embodiment. The same applies to the first recess portion 271B.

[0076] As described above, since inner wall portion 251A of accommodating portion 220 is disposed along the outer shapes of compressor 10 and silencer 210, compressor 10 and silencer 210 can be compactly covered by inner wall portion 251A. Furthermore, since outer wall portion 251B is disposed along inner wall portion 251A, accommodating portion 220 has a compact outer shape. As a result, the oxygen concentrator in which accommodating portion 220 is provided can be made compact.

[0077] The accommodation section 220 may be provided with ribs having a configuration similar to the ribs 57 and 69 of the first embodiment. The accommodation section 220 may be provided with a plate portion having a configuration similar to the plate portion 55 (a portion to which the cooling fan 31 and the circuit board 32 are attached) of the first embodiment. The accommodation section 220 may be provided with a cushioning material similar to the cushioning material 21 of the first embodiment.

[0078] <Other embodiments> The present disclosure is not limited to the embodiments described above and in the drawings. For example, the features of the above or later described embodiments can be combined in any combination within a range that does not contradict. In addition, any feature of the above or later described embodiments can be omitted unless it is clearly stated as essential. Furthermore, the above-mentioned embodiment may be modified as follows.

[0079] In the first and second embodiments, a configuration including a compressor or the like as the sound source is illustrated, but the sound source is not limited to this. For example, the sound source may be various sound sources housed in the oxygen concentrator, or other parts attached to the compressor.

[0080] In the first embodiment, the inner walls 51A, 61A of the housing 20 are arranged along the recesses 10A, 10B of the compressor 10, but they may be arranged along recesses or protrusions provided in other locations of the compressor 10. The same applies to the second embodiment.

[0081] In the first embodiment, both the cooling fan 31 and the circuit board 32 are attached to the plate portion 55, but only one of them may be attached.

[0082] In the second embodiment, the silencer 210 is provided as a sound source, but an exhaust buffer, a switching valve, and the like may be accommodated in the accommodation section 220. The exhaust buffer functions to reduce the sound generated when purging exhaust nitrogen from the adsorption cylinder. The switching valve functions to switch between a switching state in which compressed air supplied from the compressor 10 is sent to the adsorption cylinder and a switching state in which nitrogen supplied from the adsorption cylinder is sent to the exhaust path.

[0083] In the first and second embodiments, a foam or the like for suppressing vibration of the compressor may be disposed between the sound source and the housing.

[0084] In the first and second embodiments, the storage portion is made of resin, but it may be made of metal.

[0085] It should be noted that the embodiments disclosed herein are illustrative and not restrictive in all respects. The scope of the present invention is not limited to the embodiments disclosed herein, and is intended to include all modifications within the scope indicated by the claims or within the scope equivalent to the claims. [Explanation of symbols]

[0086] 10: Compressor (sound source) 10A, 10B: Dent 20: Storage unit 21: Cushioning material 31: Cooling fan 32: Circuit Board 41: Housing 42: Cylinder 43: Head 45: Spring 50: Main body 51: Main body side wall 51A: Inner wall 51B: External wall part 52,53: Side wall 54: Upper wall 54A: 1st opening 54B: 2nd opening 55: Board part 57: Ribs 60: Lid 61: Lid side wall 61A: Inner wall 61B: Exterior wall 62,63: ​​Side wall 64: Upper wall 65A: 5th convex part (convex part) 65B: 5th recess 66A: 6th recess 66B: 6th convex part 67A: Flat area 67B: Flat part 68: Third Aperture 69: Ribs 71A: First protrusion (protrusion) 72A: Second protrusion (protrusion) 72B: Second recess 73A: Third protrusion 73B: 3rd recess 74A: 4th protrusion 74B: 4th recess 75A: Flat part 75B: Flat part 76: Groove 100: Oxygen concentrator 101: Case 210: Silencer (sound source) 210A: Dent 220: Storage unit 250: Main body 251: Main body side wall 251A: Inner wall 251B: Exterior wall 271A: First protrusion (protrusion) 271B: First recess 275A: Flat area 275B: Flat part

Claims

1. An oxygen concentrator for producing oxygen-enriched gas from air, comprising: A sound source that generates a sound; A housing portion that houses the sound source therein; Equipped with The storage section includes: An inner wall portion that is arranged along the outer shape of the sound source; An outer wall portion disposed along the inner wall portion; having Oxygen concentrator.

2. The housing portion has a rib protruding from the outer wall portion.

2. The oxygen concentrator of claim 1.

3. The inner wall portion has a protrusion protruding inward, A cushioning material capable of coming into contact with the sound source is disposed on the protruding portion.

3. The oxygen concentrator according to claim 1 or 2.

4. The housing portion has a plate portion integrally formed with the outer wall portion, A cooling fan is provided which is attached to the plate portion.

3. The oxygen concentrator according to claim 1 or 2.

5. The housing portion has a plate portion integrally formed with the outer wall portion, A circuit board is attached to the plate portion.

3. The oxygen concentrator according to claim 1 or 2.

6. a circuit board attached to the plate portion, The cooling fan is attached to one surface of the plate portion, The circuit board is attached to the other surface of the plate portion.

5. The oxygen concentrator of claim 4.

Images