A sound-damping and heat-dissipating device for an oxygen generator

Abstract

The utility model relates to oxygen generator noise reduction technical field discloses a kind of sound attenuation heat sink for oxygen generator, including sound attenuation shell, sound attenuation shell is evenly arranged air inlet, located air inlet directly below setting flow guide slope, sound attenuation shell inner chamber is separated by middle partition and forms two sound attenuation cavities, multiple partition plates are arranged in sound attenuation cavity for forming S type air outlet passage in sound attenuation cavity;Sound attenuation shell is evenly provided with air outlet groove in one end away from flow guide slope, and the air outlet of two-way S type air outlet passage is communicated and unified air outlet from air outlet groove.The utility model, by the flow guide slope being arranged, can reduce the formation of vortex at air inlet, so that subsequent noise peak frequency moves up, more easily absorbed;By the sound attenuation cavity of S type being arranged, wind can be changed by direction, so that wind decelerates, further play the effect of noise reduction.

Description

Technical Field

[0001] The present utility model relates to the technical field of noise reduction for oxygen generators, in particular to a noise reduction and heat dissipation device for oxygen generators. Background Art

[0002] When a molecular sieve oxygen generator produces oxygen through pressure swing adsorption, the operation of the air compressor to supply compressed air generates a large amount of heat. If this heat is not discharged in time, it will damage the service life of the air compressor and affect the oxygen production efficiency of the molecular sieve. Therefore, in the prior art, the oxygen generator will perform heat dissipation treatment on the air compressor. However, when the air compressor is in operation, the compressed air will generate a large amount of heat, and due to the high wind speed when the gas is discharged, there is relatively loud noise, which affects user experience. Contents of Utility Model

[0003] In view of the deficiencies in the prior art, the present utility model provides a noise reduction and heat dissipation device for oxygen generators, which solves the problem of insufficient noise reduction capability during exhaust and heat dissipation of existing oxygen generators that affects user experience.

[0004] To achieve the above objectives, the present utility model is realized through the following technical solutions:

[0005] A noise reduction and heat dissipation device for an oxygen generator, comprising a noise reduction shell, air inlet holes are evenly arranged on the noise reduction shell, a flow guiding inclined surface is arranged directly below the air inlet holes, the inner cavity of the noise reduction shell is divided by a middle partition plate to form two noise reduction cavities, a plurality of partition plates are arranged in the noise reduction cavities to form an S-shaped air outlet channel in the noise reduction cavity; an end of the noise reduction shell far from the flow guiding inclined surface is evenly provided with air outlet slots, and the air outlets of the two S-shaped air outlet channels are communicated and uniformly discharge air from the air outlet slots.

[0006] Preferably, the gaps a, b, c and d between the partition plate and the cavity wall of the noise reduction cavity in the same noise reduction cavity are arranged according to the following relationship: a<b<c<d. As shown Figure 5 in this technical solution, by gradually increasing the width of the air outlet of the S-shaped air outlet channel, the flow rate of exhaust air is further reduced, so as to reduce the noise generated during exhaust at the source level.

[0007] Preferably, a sound absorbing material block is arranged in the noise reduction cavity. As shown Figure 6 in this technical solution, by filling and arranging the sound absorbing material block in the noise reduction cavity, the noise generated during gas flow can be further absorbed and treated.

[0008] Preferably, the width of the sound absorbing material block is smaller than the gap between every two partition plates. As shown Figure 6 in this technical solution, since the width of the sound absorbing material block is smaller than the gap between the partition plates, the air outlet area of the S-shaped air outlet channel can be ensured, avoiding too small exhaust air volume that affects the heat dissipation performance of the entire oxygen generator.

[0009] Preferably, the silencing shell has extended edges on both sides, and the extended edges are detachably connected to the oxygen generator base by fasteners.

[0010] This utility model has the following beneficial effects:

[0011] The noise reduction and heat dissipation device for oxygen concentrators reduces the formation of eddies at the air inlet through the design of the guide slope, thereby shifting the peak frequency of subsequent noise upwards and making it easier to absorb; the design of the S-shaped noise reduction cavity changes the direction of the airflow, causing the airflow to slow down, further reducing noise. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the internal structure of the sound-absorbing shell of this utility model;

[0014] Figure 3 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention along the AA direction;

[0016] Figure 5 This is a schematic diagram of the cross-sectional structure of the present invention in the BB direction;

[0017] Figure 6 This is a schematic diagram of the layout structure of the sound-absorbing material block of this utility model.

[0018] In the diagram: 1. Oxygen concentrator base; 2. Silencing shell; 3. Air inlet; 4. Guide slope; 5. Middle partition; 6. Silencing cavity; 7. Divider plate; 8. Air outlet slot. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] A noise reduction and heat dissipation device for an oxygen generator, comprising a noise reduction shell 2, air inlet holes 3 are evenly arranged on the noise reduction shell 2, a flow guide inclined surface 4 is arranged directly below the air inlet holes 3, the inner cavity of the noise reduction shell 2 is divided by a middle partition plate 5 to form two noise reduction cavities 6, a plurality of partition plates 7 are arranged in the noise reduction cavities 6 to form an S-shaped air outlet channel in the noise reduction cavities 6; an air outlet groove 8 is uniformly opened at the end of the noise reduction shell 2 away from the flow guide inclined surface 4, the air outlets of the two S-shaped air outlet channels are communicated and uniformly discharge air from the air outlet groove 8, specifically as shown in Figure 1 and 2 .

[0021] In the above technical solution, the arranged flow guide inclined surface 4 can reduce the formation of eddy currents at the air inlet, so that the subsequent noise peak frequency shifts upward and is easier to be absorbed; the arranged S-shaped noise reduction cavity 6 can change the direction of the air to decelerate the air, further achieving the noise reduction effect.

[0022] The gaps a, b, c and d between the partition plate 7 and the cavity wall of the noise reduction cavity 6 in the same noise reduction cavity 6 are arranged according to the following relationship: a<b<c<d, specifically as shown in Figure 5 , in this technical solution, by setting the air outlet width of the S-shaped air outlet channel to gradually increase, the flow rate during air exhaust is further reduced, so as to reduce the noise generated during air exhaust from the source level.

[0023] Sound-absorbing material blocks are arranged in the noise reduction cavity 6. As shown in Figure 6 , in this technical solution, by filling and arranging the sound-absorbing material blocks in the noise reduction cavity 6, the noise generated in the gas flow can be further absorbed and treated.

[0024] The width of the sound-absorbing material block is smaller than the gap between every two adjacent partition plates 7. As shown in Figure 6 , in this technical solution, since the width of the sound-absorbing material block is smaller than the gap between the partition plates 7, the air outlet area of the S-shaped air outlet channel can be ensured, avoiding the excessively small air exhaust volume that affects the heat dissipation performance of the entire oxygen generator.

[0025] Extending edges are provided on both sides of the noise reduction shell 2, and the extending edges are detachably connected to the oxygen generator base 1 through fasteners.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise reduction and heat dissipation device for an oxygen generator, characterized in that, It includes a silencing shell with evenly distributed air inlets. A guide slope is set directly below the air inlets. The inner cavity of the silencing shell is divided into two silencing chambers by a middle partition. Multiple partitions are arranged in the silencing chambers to form an S-shaped air outlet channel. An air outlet slot is evenly opened at the end of the silencing shell away from the guide slope. The air outlets of the two S-shaped air outlet channels are connected and the air is discharged from the air outlet slot.

2. The noise reduction and heat dissipation device for an oxygen generator according to claim 1, characterized in that: The gaps a, b, c, and d between the partition plate and the cavity wall within the same anechoic chamber are arranged according to the following relationship: a <b<c<d。 3. The noise reduction and heat dissipation device for an oxygen generator according to claim 1 or 2, characterized in that: The sound-absorbing material block is arranged inside the silencing cavity.

4. The noise reduction and heat dissipation device for an oxygen generator according to claim 3, characterized in that: The width of the sound-absorbing material block is smaller than the gap between the two partition plates.

5. The noise reduction and heat dissipation device for an oxygen generator according to claim 3, characterized in that: The silencing shell has extended edges on both sides, which are detachably connected to the oxygen generator base by fasteners.

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