Oxygen generator and heat dissipation and noise reduction structure and system thereof

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses an oxygen generator and a heat dissipation and noise reduction structure and system thereof, the oxygen generator comprises a sound insulation guide plate, the inner side of the sound insulation guide plate is provided with a first guide cavity used for guiding heat dissipation gas to flow along a first direction; a second flow guide cavity used for guiding heat dissipation gas to flow in the second direction opposite to the first direction and communicating with the first flow guide cavity is formed in the outer side of the sound insulation flow guide plate, and the end, facing the second direction, of the sound insulation flow guide plate is of a multi-layer structure. Heat dissipation gas in the oxygen generator carries heat and noise to enter the first flow guide cavity, due to the arrangement of the multi-layer structure, most of the noise is prevented from penetrating through the multi-layer structure, the gas and the noise are limited to flow in the first flow guide cavity in the first direction and enter the second flow guide cavity to flow in the second direction, and in the long flow path, the noise is reduced. Noise is gradually consumed, and decibel is reduced. The situation that high-decibel noise is brought out of the oxygen generator by the gas is avoided, and troubles and other negative effects brought to a user by the noise are reduced.

Description

Technical Field

[0001] This utility model relates to ventilation therapy equipment, specifically to a heat dissipation and noise reduction structure and system. Furthermore, this utility model also relates to an oxygen generator incorporating this heat dissipation and noise reduction structure and system. Background Technology

[0002] With the improvement of living standards and the advancement of medical technology, people are paying increasing attention to their health. This is especially true for those suffering from chronic respiratory diseases such as chronic obstructive pulmonary disease (COPD) and asthma, for whom a continuous supply of oxygen is crucial. Oxygen concentrators, as a novel medical device, provide convenience for oxygen therapy in daily life. The core technology of oxygen concentrators is based on the PSA (Pressure Swing Adsorption) principle. It separates nitrogen and oxygen from the air through the adsorption of nitrogen by molecular sieves under pressure, thereby obtaining high-purity oxygen and achieving the effect of oxygen production.

[0003] During the operation of an oxygen concentrator, a large amount of heat and noise are generated. The accumulation of heat will affect the normal operation and lifespan of the oxygen concentrator, while the continuous noise will cause great inconvenience to users, affecting the user experience and even the effectiveness of the product.

[0004] Current oxygen concentrators focus on solving the heat dissipation problem. They have air inlets and outlets on the outer casing and use an internal fan to drive the air circulation for ventilation. This can effectively prevent the internal components of the oxygen concentrator from overheating. However, when the heat dissipation air is discharged from the oxygen concentrator, it also carries out the noise from inside the oxygen concentrator, creating a series of negative noise effects. Utility Model Content

[0005] The purpose of this invention is to overcome the problem that existing technologies cannot effectively reduce noise while dissipating heat, and to provide a heat dissipation and noise reduction structure and system. Oxygen generators equipped with this heat dissipation and noise reduction structure and system can make the heat dissipation gas carry heat and noise in a longer flow path, consume noise during the flow process, and prevent a large amount of noise from flowing out of the oxygen generator, which is beneficial to enhancing the user experience.

[0006] To achieve the above objectives, the first aspect of this utility model provides a heat dissipation and noise reduction structure, including a sound-insulating guide plate. The inner side of the sound-insulating guide plate has a first guide cavity for guiding heat dissipation gas to flow along a first direction, and the outer side has a second guide cavity for guiding heat dissipation gas to flow along a second direction opposite to the first direction and communicating with the first guide cavity. The end of the sound-insulating guide plate facing the second direction is configured as a multi-layer structure to form a sound-insulating cavity between adjacent layers.

[0007] Preferably, the sound insulation guide plate has a first guide plate and a second guide plate extending from both ends of the multilayer structure and arranged opposite to each other. The portions of the first guide plate and the second guide plate away from the multilayer structure are respectively formed with through holes that connect the first guide cavity to the second guide cavity, so as to allow the heat dissipation gas in the first guide cavity to pass through the through holes and be discharged to the second guide cavity.

[0008] Preferably, the heat dissipation and noise reduction structure further includes a partition disposed between the first guide plate and the second guide plate, the partition being configured to separate the through holes on the first guide plate and the second guide plate.

[0009] Preferably, the first guide plate and the second guide plate each have multiple rows of through holes arranged aligned with each other or staggered with each other, and / or the through holes are formed in the shape of a square, rhombus or circle.

[0010] Preferably, the heat dissipation and noise reduction structure is disposed on the compressor base plate, the compressor base plate having a base plate body, a positioning structure for positioning and installing the compressor is formed on one side of the base plate body, and a heat dissipation and noise reduction structure is formed on the other side.

[0011] Preferably, an airflow inlet communicating with the first guide cavity is formed on the base plate body, and the multi-layer structure is configured to at least partially surround the airflow inlet.

[0012] Preferably, an expansion chamber is formed between the inner wall of the multi-layered structure and the airflow inlet.

[0013] Preferably, the multi-layer structure has arc-shaped sidewalls.

[0014] The second aspect of this utility model provides a heat dissipation and noise reduction system for an oxygen generator, including a housing and a compressor base plate disposed inside the housing. A compressor is installed on one side of the compressor base plate, and the aforementioned heat dissipation and noise reduction structure is provided on the other side. The heat dissipation gas flowing through the compressor passes through the first guide cavity and the second guide cavity in sequence and is discharged to the outside of the housing.

[0015] Preferably, the outer casing or compressor base plate is provided with sound-absorbing cotton located in the flow path of the heat dissipation gas.

[0016] Preferably, the outer casing is provided with a first inlet and / or a second inlet arranged in a staggered manner, and the heat dissipation gas is drawn into the outer casing through the first inlet and / or the second inlet in sequence.

[0017] Preferably, the housing has an air inlet panel covering the outside of the second inlet, so as to form a first inlet that is offset relative to the second inlet at a position adjacent to the air inlet panel.

[0018] Preferably, the heat dissipation and noise reduction system further includes an adsorption tower mounting frame disposed inside the housing and opposite to the second inlet. The adsorption tower mounting frame forms an adsorption tower compartment for mounting the adsorption tower, and a heat dissipation notch is provided on the side of the adsorption tower mounting frame facing the second inlet.

[0019] Preferably, a control valve is installed above the adsorption tower mounting frame. The heat dissipation and noise reduction system also includes a noise reduction chamber disposed inside the outer shell and arranged adjacent to the adsorption tower mounting frame. The compressor is installed in the noise reduction chamber, and a cooling fan and a main control board are installed above the noise reduction chamber. The system is configured such that the heat dissipation gas flows sequentially through the adsorption tower mounting frame, the control valve, the main control board and the cooling fan before entering the noise reduction chamber.

[0020] The third aspect of this utility model provides an oxygen generator having the above-mentioned heat dissipation and noise reduction structure or system.

[0021] Through the above technical solution, the heat-dissipating gas inside the oxygen concentrator carries heat and noise into the first guide cavity. Due to the multi-layered structure, noise is prevented from directly passing through the sound-insulating guide plate and propagating outwards at the location of the multi-layered structure. The gas and noise are confined to flow in a first direction within the first guide cavity and then into the second guide cavity, flowing in a second direction. This flow path is longer than the path through which noise directly passes through the multi-layered structure in the first guide cavity. In this longer flow path, the noise is gradually consumed, and the decibel level decreases. Therefore, during the heat dissipation process, high-decibel noise is prevented from being carried out of the oxygen concentrator by the gas, thus achieving both heat dissipation and noise reduction, minimizing the inconvenience and other negative impacts of noise on users. Attached Figure Description

[0022] Figure 1 This is a perspective view of a heat dissipation and noise reduction structure and a compressor base plate according to a preferred embodiment of the present invention.

[0023] Figure 2 yes Figure 1 A bottom view of the first embodiment;

[0024] Figure 3 yes Figure 2 A schematic diagram showing the direction of noise flow;

[0025] Figure 4 yes Figure 1 A bottom view of the second embodiment;

[0026] Figure 5 yes Figure 1 A bottom view of the third embodiment;

[0027] Figure 6 yes Figure 1 Top view of the compressor base plate;

[0028] Figure 7 yes Figure 1 Rear view;

[0029] Figure 8 This is a perspective view of an oxygen generator according to a preferred embodiment of the present invention;

[0030] Figure 9 yes Figure 8 The left view;

[0031] Figure 10 yes Figure 8 A cross-sectional view of the structure, where the arrows indicate the direction of gas flow;

[0032] Figure 11 It is Figure 8 A 3D view of the oxygen concentrator after its outer casing has been removed;

[0033] Figure 12 yes Figure 8 A three-dimensional view of the base, first baffle, and second baffle of the outer casing of the oxygen concentrator;

[0034] Figure 13 yes Figure 8 A three-dimensional view of the adsorption tower mounting frame and adsorption tower of the oxygen generator.

[0035] Figure 14 yes Figure 13 The main view;

[0036] Figure 15 yes Figure 13 The left view;

[0037] Figure 16 yes Figure 8 A 3D view of the main control board, main control board mounting bracket, and fan of the oxygen generator;

[0038] Figure 17 yes Figure 16 Top view;

[0039] Figure 18 yes Figure 16 A 3D view of the main control board mounting bracket.

[0040] Explanation of reference numerals in the attached figures

[0041] 111-Sound insulation guide plate; 1111-First guide cavity; 1112-Second guide cavity; 1113-Through hole; 1114-Multi-layer structure; 1115-Sound insulation cavity; 1116-First guide plate; 1117-Second guide plate; 1118-Expansion chamber; 112-Baffle; 12-Outer shell; 121-Outlet; 122-First inlet; 123-Second inlet; 124-Outlet grille; 125-Inlet grille; 126-Air inlet panel; 127-Base; 128-First baffle; 129, Second baffle; 13-Compressor base plate; 131-Airflow inlet; 132-Positioning structure; 133-Base plate body; 134-Positioning groove; 14-Adsorption tower mounting bracket; 141-Adsorption tower compartment; 142-Heat dissipation notch; 15-Compressor mounting bracket; 151-Noise reduction chamber;

[0042] 2-Adsorption tower; 3-Control valve; 4-Main control board; 5-Cooling fan; 6-Compressor; 7-Main control board mounting bracket. Detailed Implementation

[0043] In this invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower as shown in the accompanying drawings. "Inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0044] Reference Figures 1 to 17 As shown, this utility model provides a heat dissipation and noise reduction structure, including a sound insulation guide plate 111. The inner side of the sound insulation guide plate 111 has a first guide cavity 1111 for guiding heat dissipation gas to flow in a first direction, and the outer side has a second guide cavity 1112 for guiding heat dissipation gas to flow in a second direction opposite to the first direction and communicating with the first guide cavity 1111. The end of the sound insulation guide plate 111 facing the second direction is configured as a multi-layer structure 1114 to form a sound insulation cavity 1115 between adjacent layers.

[0045] The sound-insulating deflector plate 111 forms a first deflector cavity 1111 and a second deflector cavity 1112 for the flow of heat-dissipating gas carrying heat and noise. Due to the multi-layer structure 1114, noise needs to penetrate each layer of the multi-layer structure 1114 multiple times and also needs to pass through the air wall formed in the sound-insulating cavity 1115 before reaching the second deflector cavity 1112. Therefore, the probability of noise directly penetrating the multi-layer structure 1114 is greatly reduced. That is, the multi-layer structure 1114 acts as a barrier to noise, making the first deflector cavity... Noise within the first flow chamber 1111 cannot pass extensively through the multi-layer structure 1114 to reach the second flow guide chamber 1112. Instead, it flows in a first direction within the first flow guide chamber 1111, enters the second flow guide chamber 1112, and then flows in a second direction before being discharged. In other words, the multi-layer structure 1114 limits the flow of the cooling gas to a longer path than the path from the multi-layer structure 1114 to the second flow guide chamber 1112. During this flow, noise is significantly reduced, and by the time the gas exits the second flow guide chamber 1112, the noise level is sufficiently low. Oxygen concentrators with this heat dissipation and noise reduction structure meet heat dissipation requirements while emitting minimal noise, avoiding user inconvenience and reducing or eliminating the numerous negative impacts of noise.

[0046] The first direction is the lateral direction within the first guide cavity 1111 from the airflow inlet 131 (described in detail later) away from the airflow inlet 131, that is... Figures 2 to 5 The direction from left to right is the second direction, which is the lateral direction within the second guide cavity 1112 opposite to the first direction. Figures 2 to 5 The direction from right to left in the middle. Figure 3 The arrows in the diagram indicate the actual flow direction of the noise. The first direction is the approximate flow direction of the heat dissipation gas in the first guide cavity 1111, and the second direction is the approximate flow direction of the heat dissipation gas in the second guide cavity 1112.

[0047] Specifically, the multi-layer structure 1114 can be formed by two layers of plate-like structures spaced apart, or by more than two layers of plate-like structures spaced apart.

[0048] In a preferred embodiment, the sound-insulating guide plate 111 has a first guide plate 1116 and a second guide plate 1117 extending from both ends of the multilayer structure 1114 and arranged opposite to each other. The portions of the first guide plate 1116 and the second guide plate 1117 away from the multilayer structure 1114 are respectively formed with through holes 1113 that connect the first guide cavity 1111 to the second guide cavity 1112, so as to allow the heat dissipation gas in the first guide cavity 1111 to be discharged to the second guide cavity 1112 through the through holes 1113.

[0049] The multi-layer structure 1114, the first guide plate 1116, and the second guide plate 1117 together form the first guide cavity 1111. Noise in the first guide cavity 1111 cannot pass through the multi-layer structure 1114 in large quantities. Instead, it can only be carried by the heat dissipation gas and flow in a direction away from the multi-layer structure 1114, which is the first direction. Based on this, the through hole 1113 is set at a position away from the multi-layer structure 1114 so that the heat dissipation gas can flow to the through hole 1113 along a longer flow path, which is beneficial to the consumption of noise. At the same time, the longer path can also promote the consumption of heat.

[0050] Among them, the multi-layer structure 1114, the first guide plate 1116, and the second guide plate 1117 together form the sound-insulating guide plate 111, which can be U-shaped (e.g., Figure 2 ), flask type (such as Figure 4 ), funnel-shaped (e.g.) Figure 5 Or any other shape that can meet the installation space requirements and can realize the function of the sound insulation guide plate 111. The installation space is defined by the shape and area of ​​the side of the compressor base plate 13 body 133 facing the heat dissipation and noise reduction structure. The sound insulation guide plate 111 of the heat dissipation and noise reduction structure needs to have enough space on the outside to form the second guide cavity 1112.

[0051] In a preferred embodiment, the heat dissipation and noise reduction structure further includes a partition 112 disposed between the first guide plate 1116 and the second guide plate 1117, the partition 112 being configured to separate the through holes 1113 on the first guide plate 1116 and the second guide plate 1117.

[0052] On the one hand, since the first guide plate 1116 and the second guide plate 1117 are arranged opposite each other, and the through holes 1113 formed on them are also arranged opposite each other, during the flow of heat dissipation gas, if there is no partition 112, the heat dissipation gas in the first guide cavity 1111 will flow simultaneously to the through holes 1113 of the two guide plates, which will form turbulence. Turbulence will generate noise, increasing the difficulty of noise treatment. To avoid this situation, a partition 112 is set between the first guide plate 1116 and the second guide plate 1117, so that the heat dissipation gas forms two non-interfering airflows on both sides of the partition 112, avoiding the contact of the two airflows and the generation of turbulence. On the other hand, as Figure 3 As shown by the middle arrow, when noise is between the first guide plate 1116 and the baffle 112, it can bounce repeatedly on the first guide plate 1116 and the baffle 112. Similarly, when noise is between the second guide plate 1117 and the baffle 112, it can bounce repeatedly on the second guide plate 1117 and the baffle 112. The sound waves are gradually consumed and reduced during the bounce process on both sides of the baffle 112.

[0053] In a preferred embodiment, the first guide plate 1116 and the second guide plate 1117 each have multiple rows of through holes 1113 arranged aligned with each other or staggered with each other.

[0054] When noise passes through multiple through holes 1113, the loud sound wave can be cut into multiple small sound waves. The small sound waves are easier to process. When the noise passes through the first guide cavity 1111 to the second guide cavity 1112, it has been formed into multiple small sound waves. These small sound waves are consumed and absorbed during the flow in the second guide cavity 1112, which improves the noise treatment effect. At the same time, since the small sound waves can be consumed and absorbed faster, the noise treatment efficiency is also increased.

[0055] The through hole 1113 can be formed into a square, rhombus, circle or any other suitable shape.

[0056] In a preferred embodiment, a heat dissipation and noise reduction structure is disposed on a compressor base plate 13. The compressor base plate 13 has a base plate body 133. A positioning structure 132 for positioning and installing the compressor 6 is formed on one side of the base plate body 133, and a heat dissipation and noise reduction structure is formed on the other side.

[0057] Among them, with Figure 10 The orientation is described as follows: the side of the base plate 133 where the positioning structure 132 is formed is the upper surface of the base plate 133, and the side where the heat dissipation and noise reduction structure is formed is the lower surface of the base plate 133. Since the compressor 6, which is mounted to the positioning structure 132, is the main noise-generating component, the heat dissipation and noise reduction structure is mounted together with the compressor 6 on the compressor base plate 13. Figure 10 As can be seen, the heat dissipation and noise reduction structure can isolate the noise generated by the compressor 6 from the discharge port 121 on the outer casing 12 (described in detail later). As the noise flows with the cooling gas to the discharge port 121, the heat dissipation and noise reduction structure can prevent a large amount of noise from being discharged from the outer casing 12 to the outside of the outer casing 12. In addition, the positioning structure 132 and the heat dissipation and noise reduction structure can make full use of the space on both sides of the base plate body 133, making the overall setup more compact.

[0058] Specifically, a positioning groove 134 is formed on one side of the base plate 133 where a heat dissipation and noise reduction structure is formed. A first baffle 128 with a shape and size adapted to the positioning groove 134 protrudes from the base 127 of the outer shell 12. During installation, the top of the first baffle 128 is inserted into the positioning groove 134. Due to the structure of the first baffle 128... Figure 3 From the viewing direction, it has the same structure as the positioning groove 134, therefore, Figure 3The positioning groove 134 simulates the function of the first baffle 128. When noise moves within the second guide cavity 1112, it can repeatedly bounce between the sound insulation guide plate 111 and the first baffle 128, promoting the dissipation of sound waves. At the same time, the first baffle 128 also serves as a guide, directing the heat dissipation gas to carry heat out of the second guide cavity 1112.

[0059] In a preferred embodiment, an airflow inlet 131 communicating with a first flow guide cavity 1111 is formed on the base plate body 133, and the multi-layer structure 1114 is configured to at least partially surround the airflow inlet 131.

[0060] The airflow inlet 131 is positioned adjacent to the multi-layer structure 1114. The positions of the through holes 1113 on the first guide plate 1116 and the second guide plate 1117 are also designed to match the position of the airflow inlet 131 on the compressor base plate 13. The through holes 1113 are located away from the multi-layer structure 1114, limiting the flow of heat dissipation gas to a position only adjacent to the multi-layer structure 1114 and away from it. This fully utilizes the space of the first guide cavity 1111, extending the flow path of the heat dissipation gas. The airflow inlet 131 can be a square opening or other opening that allows heat dissipation gas to enter the first guide cavity 1111.

[0061] In addition, when the heat dissipation gas enters the first guide cavity 1111 from the airflow inlet 131, it can flow freely in a direction around the entire circumference of the airflow inlet 131. In order to limit the flow of the heat dissipation gas away from the airflow inlet 131, the multi-layer structure 1114 is set to at least partially surround the airflow inlet 131. In this way, after the heat dissipation gas enters the first guide cavity 1111, it can be blocked by the multi-layer structure 1114 and flow in the first direction, ensuring that the heat dissipation gas can flow along a long flow path.

[0062] In a preferred embodiment, an expansion chamber is formed between the inner wall of the multi-layered structure and the airflow inlet.

[0063] The formation of the expansion chamber 1118 allows noise to enter the first guide chamber 1111 from the airflow inlet 131, and then partially or entirely enter the expansion chamber 1118. Within the expansion chamber 1118, noise is either reflected or partially absorbed by the sound-absorbing cotton that can be placed inside, thus providing initial noise mitigation and treatment. The noise is then directed to flow in the first direction, thereby enhancing the noise treatment effect. Specifically, as... Figure 4 and Figure 5 As shown in the two embodiments, the portion of the multilayer structure 1114 located on at least one side of the airflow inlet 131 protrudes toward the second guide cavity 1112 relative to the airflow inlet 131 to form an expansion chamber 1118 at a position adjacent to the airflow inlet 131.

[0064] In a preferred embodiment, the multilayer structure 1114 has arcuate sidewalls.

[0065] The curved sidewalls of the multi-layered structure 1114 allow for a smoother and more stable flow of heat dissipation gas. Specifically, as shown... Figure 2 As shown, the inner and outer walls of the multilayer structure 1114 are formed as concave and convex arc surfaces, respectively. When the heat dissipation gas is located in the first guide cavity 1111, it can flow smoothly and stably along the concave arc surface of the multilayer structure 1114. Similarly, when the heat dissipation gas is located in the second guide cavity 1112, it can flow smoothly and stably along the convex arc surface of the multilayer structure 1114.

[0066] This utility model also provides a heat dissipation and noise reduction system for an oxygen generator, including a housing 12 and a compressor base plate 13 disposed inside the housing 12. A compressor 6 is installed on one side of the compressor base plate 13, and the above-mentioned heat dissipation and noise reduction structure is provided on the other side. The heat dissipation gas flowing through the compressor 6 passes through the first guide cavity 1111 and the second guide cavity 1112 in sequence and is discharged to the outside of the housing 12.

[0067] As mentioned above, the function of the heat dissipation and noise reduction structure is to process noise inside the outer casing 12 and prevent noise from being discharged into the outer casing 12 and affecting the user experience. At the same time, the heat dissipation and noise reduction structure and the compressor 6, which mainly generates noise, are set together on the compressor base plate 13. In this way, the large amount of noise generated by the compressor 6 can be processed quickly and effectively, and the noise treatment effect can be improved.

[0068] The outer shell 12 includes a base 127, on which a first baffle 128 and a second baffle 129 protrude. The arrangement of the first baffle 128 has been described previously and will not be repeated here. The second baffle 129 abuts against one side of the base plate body 133 where a heat dissipation and noise reduction structure is formed. The opposite side of the sound insulation guide plate 111 with a multi-layer structure 1114 is formed as an opening. The second baffle 129 closes the opening to ensure that the heat dissipation gas can only move from the airflow inlet 131 to the through hole 1113, and cannot flow out from the opening.

[0069] Depend on Figure 2 As can be seen from the positioning groove 134 structure, the first baffle 128 is composed of two plates, and the second baffle 129 is formed into a "U" shape. The two plates of the second baffle 129 are connected to the two plates of the first baffle 128 to form a "U" shape with a larger inner depth. The two can be formed by an integral structure, and the sound insulation guide plate 111 is confined inside the large "U" shape.

[0070] The side of the sound-insulating guide plate 111 facing away from the compressor base plate 13 is also formed as an opening, and the side of the base 127 facing the sound-insulating guide plate 111 closes this opening of the sound-insulating guide plate 111. The inner wall of the sound-insulating guide plate 111, the side of the base 127 facing the sound-insulating guide plate 111, and a portion of the second baffle 129 together form a first guide cavity 1111 that is closed except for the airflow inlet 131; the outer wall of the sound-insulating guide plate 111, the side of the base 127 facing the sound-insulating guide plate 111, the first baffle 128, and a portion of the second baffle 129 together form a second guide cavity 1112 that is closed except for the outlet 121.

[0071] In a preferred embodiment, the outer casing 12 or the compressor base plate 13 is provided with sound-absorbing cotton located in the flow path of the heat dissipation gas.

[0072] Specifically, sound-absorbing cotton can be placed on the base 127. During the rebound of noise within the first guide cavity 1111 and the second guide cavity 1112, it is gradually absorbed by the sound-absorbing cotton, thus reducing noise. Furthermore, the repeated rebound of noise increases the residence time within the first guide cavity 1111 and the second guide cavity 1112, allowing more noise to be absorbed by the sound-absorbing cotton, further enhancing the noise reduction effect. Additionally, after passing through the through hole 1113, the sound wave becomes smaller and is more easily absorbed by the sound-absorbing cotton, further increasing the noise reduction effect. The combination of sound-absorbing cotton and the heat dissipation and noise reduction structure effectively reduces noise and achieves optimal noise reduction results.

[0073] In a preferred embodiment, the outer casing 12 is provided with a first inlet 122 and / or a second inlet 123 arranged in a staggered manner, and the heat dissipation gas is drawn into the outer casing 12 through the first inlet 122 and / or the second inlet 123 in sequence.

[0074] A single inlet can be provided on the outer casing 12, namely a first inlet 122 or a second inlet 123.

[0075] The outer casing 12 can also be provided with two inlets, namely a first inlet 122 and a second inlet 123. For example... Figure 7As shown, the outer casing 12 has an air inlet panel 126 covering the outside of the second inlet 123, forming a first inlet 122 offset from the second inlet 123 at a position adjacent to the air inlet panel 126. Gas outside the casing 12, blocked by the air inlet panel 126, forms a zigzag air intake path through the first inlet 122 and the second inlet 123. With the action of the cooling fan 5 installed inside the casing 12, the gas outside the casing 12 can continuously flow into the casing 12. Therefore, the arrangement of the first inlet 122 and the second inlet 123 does not affect the efficiency of gas entering the casing 12. Noise inside the casing 12 flows through the second inlet 123 to the air inlet panel 126 and is reflected back into the casing 12, thereby reducing the direct transmission of noise from inside the casing 12 to the outside of the casing 12 through the second inlet 123 and improving the noise level of the oxygen concentrator. The air inlet panel 126 also prevents dust from entering the casing 12 through the second inlet 123. In addition, in the direction from the outside to the inside of the outer casing 12, the first inlet 122 is recessed relative to the air inlet panel 126, which plays a certain role in dust prevention.

[0076] Specifically, an inlet grille 125 and filter cotton are provided at the second inlet 123, which can filter external impurities to a certain extent. The air inlet panel 126 is detachable, and an arrow is marked on the side opposite to the second inlet 123. By pulling the air inlet panel 126 in the direction of the arrow, the air inlet panel 126 can be removed so that the filter cotton can be cleaned.

[0077] The outer casing 12 is also provided with a discharge port 121, which is located on the side of the multi-layer structure 1114 facing the outer casing 12. A discharge grille 124 is provided at the discharge port 121 to isolate impurities from the outside of the outer casing 12.

[0078] In a preferred embodiment, the heat dissipation and noise reduction system further includes an adsorption tower mounting frame 14 disposed inside the housing 12 and opposite to the second inlet 123. The adsorption tower mounting frame 14 has an adsorption tower compartment 141 for mounting the adsorption tower 2, and a heat dissipation notch 142 is provided on the side of the adsorption tower mounting frame 14 facing the second inlet 123.

[0079] Since the adsorption tower 2 generates a large amount of heat during adsorption and desorption, a heat dissipation notch 142 is provided on the adsorption tower mounting frame 14. The heat dissipation gas entering the shell 12 from the second inlet 123 first flows through the heat dissipation notch 142 to the adsorption tower 2. The lowest temperature heat dissipation gas preferentially carries away the heat of the adsorption tower 2, which can effectively reduce the heat generation of the adsorption tower 2 and prevent excessive heat from affecting the normal operation of the adsorption tower 2. In addition, the adsorption tower 2 includes an aluminum alloy barrel and a molecular sieve installed inside. The aluminum alloy barrel has good thermal conductivity, and the heat generated by the molecular sieve is quickly and massively transferred to the surface of the aluminum alloy barrel. With the setting of the heat dissipation notch 142, the heat on the surface of the aluminum alloy barrel can be carried away by the heat dissipation gas. In addition, a heat dissipation vent is formed on the top of the adsorption tower mounting frame 14, and the heat dissipation gas can carry the heat of the adsorption tower 2 and be discharged from the heat dissipation vent to the outside of the adsorption tower chamber 141.

[0080] In a preferred embodiment, a control valve 3 is installed above the adsorption tower mounting frame 14. The heat dissipation and noise reduction system also includes a noise reduction chamber 151 disposed inside the housing 12 and arranged adjacent to the adsorption tower mounting frame 14. The compressor 6 is installed in the noise reduction chamber 151, and a cooling fan 5 and a main control board 4 are installed above the noise reduction chamber 151. The system is configured such that the heat dissipation gas flows sequentially through the adsorption tower mounting frame 14, the control valve 3, the main control board 4, and the cooling fan 5 before entering the noise reduction chamber 151.

[0081] The internal components of the outer casing 12 are compactly structured and designed to work in conjunction with the flow path of the heat dissipation gas to gradually dissipate heat from each of the main heat-generating components, forming an effective heat dissipation path and maximizing the removal of heat from the interior of the outer casing 12.

[0082] The noise reduction chamber 151 is formed by the compressor mounting bracket 15, which is mounted above the compressor base plate 13, and the compressor base plate 13. The compressor mounting bracket 15 is a square cover with an opening at its top, allowing heat dissipation gas to enter the noise reduction chamber 151 through the opening. Figure 10 , Figure 16 and Figure 17 As shown, the main control board 4 and the cooling fan 5 are staggered from top to bottom, so that the pressure difference of the cooling fan 5 can promote a large and rapid flow of cooling air through the main control board 4, carrying away the heat from the main control board 4. Additionally, as... Figure 10 , Figures 16 to 18 As shown, the main control board 4 is connected to the cooling fan 5 via the main control board mounting bracket 7. An arc-shaped air guide plate 71 is formed on the main control board mounting bracket 7 to create an arc-shaped air inlet. The air guide plate 71 is positioned directly above the inlet, guiding the cooling air output by the cooling fan 5 to the inlet and facilitating its entry into the noise reduction chamber 151. Furthermore, as... Figure 10As shown, the square shape of the compressor mounting bracket 15 forms two guiding right angles at its two upper corners, allowing the heat dissipation gas to flow along these two guiding right angles after entering the noise reduction chamber 151, thus filling the entire noise reduction chamber 151 and promoting the heat dissipation of the compressor 6.

[0083] This utility model also provides an oxygen generator having the above-mentioned heat dissipation and noise reduction structure or system. The heat dissipation and noise reduction structure or system of this oxygen generator has all the technical solutions and effects of the above-mentioned heat dissipation and noise reduction structure or system, which will not be repeated here.

[0084] In a preferred embodiment, the oxygen concentrator includes an adsorption tower 2, a control valve 3, a pulse oxygen valve (not shown), a main control board 4, a cooling fan 5, a compressor 6, and a differential pressure sensor. The differential pressure sensor, the main control board 4, and the pulse oxygen valve (not shown) are electrically connected in sequence. The pulse oxygen valve is connected to the oxygen outlet of the adsorption tower 2 to control the opening and closing of the oxygen outlet of the adsorption tower 2. The differential pressure sensor generates a differential pressure signal based on the pressure difference generated by the user's breathing and transmits the differential pressure signal to the main control board 4. The main control board 4 determines whether the user is in an inhalation or exhalation state based on the differential pressure signal. If it determines that the user is in an inhalation state, it sends an open signal to the pulse oxygen valve to open the pulse oxygen valve to supply oxygen. If it determines that the user is in an exhalation state, it sends a close signal to the pulse oxygen valve to close the pulse oxygen valve to supply oxygen, thereby realizing pulse oxygen supply, that is, oxygen is supplied when the user inhales and stops when the user exhales, so that all the supplied oxygen can be used for the user's inhalation. Compared with an oxygen concentrator that continuously supplies oxygen, it can save oxygen wasted when the user exhales. In this way, even if the oxygen concentrator is only one liter, it can achieve the same oxygen therapy effect as a larger home desktop continuous oxygen concentrator with a volume of six liters. Conversely, because oxygen is saved, the larger compressor 6 and the large amount of molecular sieves in the adsorption tower 2 of the home desktop continuous oxygen concentrator are not needed. The various components of the oxygen concentrator can be appropriately reduced in size, which reduces the overall size, manufacturing cost and energy consumption, and can be used as a portable oxygen concentrator.

[0085] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A heat dissipation and noise reduction structure, characterized in that, The sound insulation and flow guide plate (111) has a first flow guide cavity (1111) formed on the inner side thereof for guiding the flow of the heat dissipation gas in a first direction, and a second flow guide cavity (1112) formed on the outer side thereof for guiding the flow of the heat dissipation gas in a second direction opposite to the first direction and communicating with the first flow guide cavity (1111), and the end of the sound insulation and flow guide plate (111) facing the second direction is provided in a multi-layer structure (1114) to form sound insulation cavities (1115) between adjacent layers.

2. The heat dissipation and noise reduction structure according to claim 1, characterized in that, The sound insulation and flow guide plate (111) has a first flow guide plate (1116) and a second flow guide plate (1117) respectively extending from the two ends of the multi-layer structure (1114) and arranged opposite to each other, and the portions of the first flow guide plate (1116) and the second flow guide plate (1117) away from the multi-layer structure (1114) are respectively provided with through holes (1113) for communicating the first flow guide cavity (1111) with the second flow guide cavity (1112) to allow the heat dissipation gas in the first flow guide cavity (1111) to be discharged to the second flow guide cavity (1112) through the through holes (1113).

3. The heat dissipation and noise reduction structure according to claim 2, characterized in that, The heat dissipation and noise reduction structure further comprises a partition plate (112) arranged between the first flow guide plate (1116) and the second flow guide plate (1117) to separate the through holes (1113) on the first flow guide plate (1116) and the second flow guide plate (1117).

4. The heat dissipation and noise reduction structure according to claim 2, characterized in that, The first flow guide plate (1116) and the second flow guide plate (1117) are respectively provided with multiple rows of through holes (1113) arranged in alignment with each other or staggered with each other, and / or the through holes (1113) are formed in a square, rhombus or circular shape.

5. The heat dissipation and noise reduction structure according to claim 1, characterized in that, The heat dissipation and noise reduction structure is arranged on a compressor bottom plate (13) having a bottom plate body (133) with a positioning structure (132) formed on one side thereof for positioning and mounting a compressor (6) and the heat dissipation and noise reduction structure formed on the other side thereof.

6. The heat dissipation and noise reduction structure according to claim 5, characterized in that, The bottom plate body (133) is provided with an air inlet (131) communicating with the first flow guide cavity (1111), and the multi-layer structure (1114) is arranged to at least partially surround the air inlet (131).

7. The heat dissipation and noise reduction structure according to claim 6, characterized in that, An expansion chamber (1118) is formed between the inner wall of the multi-layer structure (1114) and the air inlet (131).

8. The heat dissipation and noise reduction structure according to claim 6, characterized in that, The multi-layer structure (1114) has an arc-shaped side wall.

9. A heat dissipation and noise reduction system for an oxygen generator, characterized in that, The heat dissipation and noise reduction structure according to any one of claims 1 to 8 is arranged on a compressor bottom plate (13) mounted on one side thereof with a compressor (6) and on the other side thereof with the heat dissipation and noise reduction structure, and the heat dissipation gas flowing through the compressor (6) is discharged to the outside of the shell (12) after sequentially passing through the first flow guide cavity (1111) and the second flow guide cavity (1112).

10. The heat dissipation and noise reduction system of claim 9, wherein, The shell (12) or the compressor bottom plate (13) is provided with sound insulation cotton in the flow path of the heat dissipation gas.

11. The heat dissipation and noise reduction system of claim 9, wherein, The shell (12) is provided with a first inlet (122) and / or a second inlet (123) arranged in a staggered manner, and the heat dissipation gas is sequentially sucked into the shell (12) through the first inlet (122) and / or the second inlet (123).

12. The heat dissipation and noise reduction system of claim 11, wherein, The shell (12) is provided with an air inlet panel (126) covering the outside of the second inlet (123), so as to form the first inlet (122) arranged in a staggered manner relative to the second inlet (123) at a position adjacent to the air inlet panel (126).

13. The heat dissipation and noise reduction system of claim 11, wherein, The heat dissipation and noise reduction system further comprises an adsorption tower mounting rack (14) arranged inside the shell (12) and opposite to the second inlet (123), the adsorption tower mounting rack (14) is formed with an adsorption tower compartment (141) for mounting an adsorption tower (2), and a heat dissipation gap (142) is arranged on the side of the adsorption tower mounting rack (14) facing the second inlet (123).

14. The heat dissipation and noise reduction system of claim 13, wherein, A control valve (3) is mounted above the adsorption tower mounting rack (14), and the heat dissipation and noise reduction system further comprises a noise reduction chamber (151) arranged inside the shell (12) and adjacent to the adsorption tower mounting rack (14), the compressor (6) is mounted in the noise reduction chamber (151), and a heat dissipation fan (5) and a main control board (4) are mounted above the noise reduction chamber (151), and the heat dissipation gas sequentially flows through the adsorption tower mounting rack (14), the control valve (3), the main control board (4) and the heat dissipation fan (5) to enter the noise reduction chamber (151).

15. An oxygen generator, characterized by comprising: The heat dissipation and noise reduction structure according to any one of claims 1 to 8 or the heat dissipation and noise reduction system according to any one of claims 9 to 14.

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