Oxygen generator and heat dissipation system thereof

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses an oxygenerator and a heat dissipation system thereof, the oxygenerator comprises a host shell (1) provided with a first air inlet (121a) and a heat dissipation fan (2) installed in the host shell (1), a first heat dissipation air path (L1) is formed between the first air inlet (121a) and the heat dissipation fan (2), the first heat dissipation air path (L1) is provided with a to-be-cooled element, and the heat dissipation fan (2) is installed in the host shell (1). And an air guide port (72) for guiding cooling air sucked by the first air inlet (121a) to flow to one of the elements to be cooled is formed in the host shell (1). The heat dissipation system can effectively improve heat dissipation of a specific element to be subjected to heat dissipation, so that heat of a host shell and other parts in the host shell is taken away in time, even if the oxygen generator is used for a long time, the influence of heat accumulation on the heat dissipation effect can still be avoided, and related parts in the oxygen generator can work within a proper temperature range; therefore, the service life of the oxygen generator is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to ventilation therapy equipment, concretely relates to an oxygen generator heat dissipation system. BACKGROUND

[0002] Oxygen generator is mainly used in hospital, family and field rescue scene. Typically, oxygen generator can adopt pressure swing adsorption (PSA) principle, to take environmental air as raw material, under normal temperature low pressure condition, by compressor, environmental air is compressed, and nitrogen in air is adsorbed using molecular sieve, so that oxygen and nitrogen in air can be separated to prepare oxygen. In the operation process of oxygen generator, a large amount of heat will be generated, if these heat is not discharged in time, it will cause the machine overheating, influence its normal operation and life, and also can bring security risks. Therefore, the heat dissipation problem of oxygen generator becomes an important research direction.

[0003] In the prior art, the heat dissipation fan is usually arranged in the oxygen generator, which drives the airflow to flow through the heating components inside the oxygen generator shell to take away the heat generated by these heating components. Although this can relatively effectively avoid the overheating of the components in the oxygen generator, but there is still the problem of insufficient heat dissipation, which leads to the shortening of the service life of the oxygen generator. Especially, the traditional heat dissipation method only focuses on the heat dissipation of the compressor in the oxygen generator, and after a long time of use, the main machine shell and other internal components also accumulate a certain amount of heat, which slows down the speed of heat dissipation. In addition, the design of the heat dissipation air path of the existing oxygen generator is not reasonable, which leads to uneven distribution of airflow in the oxygen generator, and poor heat dissipation effect. SUMMARY

[0004] The utility model discloses a kind of oxygen generator heat dissipation systems to overcome the problems of the prior art that oxygen generator has poor heat dissipation effect, and oxygen generator with the heat dissipation system can guide cooling air flow to specific heat dissipation element during working process, to effectively improve heat dissipation, still can maintain good heat dissipation effect after long time use, beneficial to prolong service life.

[0005] To achieve the above object, the utility model provides an oxygen generator heat dissipation system in one aspect, including the main machine shell with first air inlet and the heat dissipation fan installed in the main machine shell, the first air inlet and the heat dissipation fan form first heat dissipation air path, and the first heat dissipation air path is equipped with heat dissipation element, and the main machine shell is equipped with air inlet for guiding cooling air flow to one of the heat dissipation element by the first air inlet.

[0006] Preferably, the heat dissipation element includes at least one of main circuit board, compressor, oxygen generating unit and air inlet nitrogen control valve.

[0007] Preferably, the first air inlet is arranged at a first end of the main housing, and an air outlet is arranged on a side wall of the main housing adjacent to the first end, the main circuit board is arranged opposite to another side wall of the main housing, and the air guide opening is arranged to guide the cooling air drawn in by the first air inlet to flow to the main circuit board.

[0008] Preferably, a second air inlet is arranged at a second end of the main housing opposite to the first end, so as to form a second heat dissipation air passage between the second air inlet and the heat dissipation fan.

[0009] Preferably, an air outlet end of the heat dissipation fan faces the compressor, and the cooling air drawn in from the first air inlet and the second air inlet is blown to the compressor by the heat dissipation fan and then discharged through the air outlet.

[0010] Preferably, the compressor is arranged adjacent to the first air inlet, and the oxygen generating unit is arranged adjacent to the second air inlet, and at least part of the cooling air in the second heat dissipation air passage is sequentially drawn into the heat dissipation fan through gaps between the oxygen generating unit, the air inlet nitrogen control valve and the main circuit board and the main housing.

[0011] Preferably, the main housing has a housing body and air inlet grilles respectively detachably connected to the first end and the second end of the housing body, and the first air inlet and the second air inlet are respectively formed in the corresponding air inlet grilles.

[0012] Preferably, the air inlet grille comprises a grille plate body and a buckle detachably connected to the grille plate body, and the buckle has an elastically deformable portion abutting against the grille plate body and a clamping portion for clamping to the housing body.

[0013] Preferably, the main housing is provided with a main support, each of the heat dissipation components is arranged on the main support, and an air guide baffle is arranged at an end of the main support facing the first air inlet, so as to define the air guide opening by the air guide baffle.

[0014] The second aspect of the present application provides an oxygen generator with the above heat dissipation system.

[0015] By the technical scheme, the oxygen generator heat dissipation system is provided with the air guide opening for guiding the cooling air inhaled by the first air inlet to flow to one of the to-be-cooled elements, so that sufficient cooling air can flow through the to-be-cooled element, the heat dissipation effect of the first heat dissipation air path is fully exerted, and the to-be-cooled element is kept in the suitable temperature range. By optimizing the design of the first heat dissipation air path, the heat dissipation system can effectively improve the heat dissipation of the specific to-be-cooled element, such as the main circuit board, so as to timely take away the heat of the main machine shell and other internal components, avoid the influence of heat accumulation on the heat dissipation effect even after the oxygen generator is used for a long time, and keep the related components in the oxygen generator in the suitable temperature range, so as to prolong the service life of the oxygen generator. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view of an oxygen generator according to a preferred embodiment of the present application;

[0017] Figure 2 is a perspective view of the oxygen generator in Figure 1 after the shell body is removed;

[0018] Figure 3 is a perspective view of the oxygen generator in Figure 1 from another viewing angle;

[0019] Figure 4 is a perspective view of the oxygen generator in Figure 3 after the shell body is removed;

[0020] Figure 5a and Figure 5b are perspective views of buckles of an air inlet grille for the oxygen generator in Figure 1 from different viewing angles;

[0021] Figure 6 is a perspective view of a grille plate body of the air inlet grille for the oxygen generator in Figure 1 ; and

[0022] Figure 7 is a perspective view of the oxygen generator in Figure 1 after the main machine shell is removed;

[0023] Figure 8 is a perspective view of the oxygen generator in Figure 7 after the oxygen storage tank and the like are removed;

[0024] Figure 9 is a sectional structure view of the oxygen generator in Figure 7 ; and

[0025] Figure 10 is a schematic view showing the air path flow direction in the oxygen generator heat dissipation system according to a preferred embodiment of the present application.

[0026] Reference Signs List

[0027] 1 - main machine shell; 11 - shell body; 111 - air outlet; 12 - air inlet grille; 121 - grille plate body; 1211 - buckle mounting groove; 1212 - buckle limiting hole; 1213 - pressing guide groove; 121a - first air inlet; 121b - second air inlet; 122 - buckle; 122a - elastic deformation part; 122b - clamping part; 122c - pressing part; 122d - limiting boss;

[0028] 2 - heat dissipation fan; 3 - compressor; 4 - main circuit board; 5 - oxygen generating unit; 6 - air inlet nitrogen exhaust control valve; 7 - main support; 71 - air guide baffle; 72 - air guide hole;

[0029] L1 - first heat dissipation air path; L2 - second heat dissipation air path. DETAILED DESCRIPTION

[0030] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to illustrate and explain the present application, and are not intended to limit the present application.

[0031] In the present application, unless otherwise stated, the orientation words such as "up, down, left, right" generally refer to the up, down, left, right shown in the drawings; "inner, outer" refers to the inner, outer relative to the contour of each component itself.

[0032] Reference Figures 1 to 10 As shown in the drawings, the present application provides a kind of oxygen generator heat dissipation system, with main machine shell 1 and install in the heat dissipation fan 2 of the main machine shell 1, the main machine shell 1 still be equipped with, for example, main circuit board 4, compressor 3, oxygen generating unit 5, air inlet nitrogen exhaust control valve 6 etc. to be heat dissipation element, wherein, compressor 3 and main circuit board 4 are the main heating components in oxygen generator. Typically, compressor 3 can inhale ambient air from the outside of main machine shell 1, and it is compressed and supplied to oxygen generating unit 5 (one molecular sieve) in adsorption step by air inlet nitrogen exhaust control valve 6 to produce oxygen for supply to patient, while the nitrogen gas discharged from oxygen generating unit 5 in desorption step can be discharged by air inlet nitrogen exhaust control valve 6. Main circuit board 4 can be arranged to control the action of these functional components. In this process, these components generate heat due to friction, conduction and other factors, which will affect their normal work if not promptly discharged.

[0033] Therefore, in the oxygen concentrator heat dissipation system provided by this utility model, the main unit casing 1 is provided with a first air inlet 121a, forming a first heat dissipation air passage L1 between the first air inlet 121a and the cooling fan 2. At least some of the aforementioned components to be cooled are disposed on the first heat dissipation air passage L1, meaning that the cooling airflow delivered by the first heat dissipation air passage L1 passes over the surface of the corresponding component to be cooled, thereby carrying away its heat. Importantly, in this heat dissipation system, the main unit casing 1 is provided with an air guide vent 72 for guiding the cooling airflow drawn in by the first air inlet 121a to one of the components to be cooled. In the illustrated preferred embodiment, especially referring to... Figure 2 , Figure 7 and Figure 10 As shown, the main circuit board 4 is installed on one side of the mechanism. The cooling air drawn in by the first air inlet 121a flows only to the side where the main circuit board 4 is located under the guidance of the air guide 72, thus avoiding some of the cooling air flowing to the other side or top of the mechanism. In this way, the heat on the main circuit board 4 can be removed in a timely and effective manner.

[0034] Therefore, by optimizing the design of the first heat dissipation air path L1, this heat dissipation system allows sufficient cooling airflow to pass through the corresponding components to be cooled, thus fully utilizing the heat dissipation effect of the first heat dissipation air path L1 and keeping the components to be cooled within a suitable temperature range. In particular, by guiding the cooling airflow to the main heat-generating components in the oxygen concentrator, such as the main circuit board 4, the heat dissipation of these main heat-generating components can be effectively improved, thereby promptly removing heat from the main casing 1 and other internal components. Even after prolonged use of the oxygen concentrator, the heat accumulation can be prevented from affecting the heat dissipation effect, ensuring that the relevant components inside the oxygen concentrator operate within a suitable temperature range, thereby extending the service life of the oxygen concentrator.

[0035] In a preferred embodiment, the first end of the main unit housing 1 and the second end opposite to the first end may be provided with a first air inlet 121a and a second air inlet 121b, and an air outlet 111 is provided on one side wall between the first end and the second end, so as to form a first heat dissipation air passage L1 and a second heat dissipation air passage L2 that pass through the gap between the main unit housing 1 and at least part of the heat dissipation components. Figure 2 and Figure 4 Arrows are used to illustrate the airflow path from the first air inlet 121a and the second air inlet 121b to the cooling fan 2, where, as Figure 2 As shown, a portion of the cooling air is drawn in from the first air inlet 121a, flows through the main circuit board 4, and reaches the air inlet of the cooling fan 2; as Figure 2 and Figure 4As shown, another part of the cooling air is sucked from the second air inlet 121b, sequentially flows through the oxygen production unit 5, the air inlet nitrogen control valve 6, the main circuit board 4 to the air inlet end of the cooling fan 2. These cooling air is blown to the compressor 3 after passing through the cooling fan 2, and then discharged to the outside of the main machine shell 1 through the air outlet 111 of the main machine shell 1.

[0036] The oxygen generator cooling system of the utility model forms air inlets at two opposite ends of the main machine shell 1, thereby improving the amount of cooling air entering the main machine shell 1 and ensuring the cooling effect. Moreover, the inhaled cooling air flows through the gap between the heating unit and the main machine shell 1, which can not only cool the heating unit but also take away the heat radiated to the main machine shell 1, thereby avoiding the influence of heat accumulation on the main machine shell 1 on the cooling effect after a long time of use, and enabling the related components in the oxygen generator to work within an appropriate temperature range, so as to prolong the service life of the oxygen generator. At the same time, by arranging the air outlet 111, the first air inlet 121a and the second air inlet 121b on different end walls of the main machine shell 1, the airflow in the first cooling air path L1 and the second cooling air path L2 can independently flow through different components to be cooled or different parts of the same component to be cooled, thereby ensuring a high airflow speed and a good cooling effect.

[0037] As described above, the compressor 3 is one of the main heating components in the oxygen generator and generates a large amount of heat due to friction. Therefore, in a preferred embodiment, the cooling fan 2 is arranged with its air outlet end facing the compressor 3. Thus, the cooling air sucked from the first air inlet 121a and the second air inlet 121b is blown by the cooling fan 2 to the compressor 3, and can be discharged from the air outlet 111 after passing through the compressor 3. In this way, on the one hand, a large amount of air can pass through the compressor 3 to take away the heat generated thereby, and on the other hand, the heat generated by the compressor 3 carried by the cooling air can be avoided from being blown to other components to be cooled, thereby effectively improving the cooling effect of the whole machine by optimizing the path of the cooling air path.

[0038] In this embodiment, the cooling fan 2 can be installed directly above the compressor 3, and the air outlet 111 faces the bottom end of the compressor 3, so that the cooling air blown by the cooling fan 2 to the compressor 3 flows through the front and rear sides of the compressor 3 and is then discharged through the air outlet 111. In this way, the compressor 3 can be well cooled, and the whole oxygen generator can be designed to have a small thickness in the front-rear direction, which is convenient for portable design.

[0039] As another main heating component in the oxygen generator, the electronic components on the main circuit board 4 also generate a large amount of heat during operation. Therefore, in a preferred embodiment, as shown in FIG. 2, the main circuit board 4 is arranged with its one end facing the air outlet 111 and the other end facing the first air inlet 121a. Figure 2 and Figure 10As shown, the cooling air flowing through the first cooling air passage L1 and the second cooling air passage L2 is drawn into the cooling fan 2 through the gap between the main circuit board 4 and the main unit casing 1. Thus, the cooling air drawn in through the first air inlet 121a and the second air inlet 121b can flow through different areas of the main circuit board 4 to dissipate heat from the electronic components in these different areas, ensuring that the main circuit board 4 operates normally within a suitable temperature range.

[0040] The main circuit board 4 can be mounted on the side of the compressor 3 away from the air outlet 111, and the compressor 3 is arranged adjacent to the first air inlet 121a. The cooling air drawn in through the first air inlet 121a can be guided to pass only through the main circuit board 4 and the compressor 3 before and after the cooling fan 2, with a short airflow path, thereby effectively removing the heat from these two main heat-generating components. In this case, the electronic components on the main circuit board 4 can also be optimized so that the main heat-generating components are located in the first heat dissipation air path L1. As mentioned above, the main housing 1 can be provided with an air guide 72, which can be defined by an air guide baffle 71 formed on the main support 7, so that the cooling air drawn in through the first air inlet 121a is guided by the air guide 72 to flow to the gap between the main circuit board 4 and the main housing 1, which effectively ensures the airflow in the first heat dissipation air path L1. The optimization of the first heat dissipation air path L1 by the air guide baffle 71 can provide sufficient cooling air to the main circuit board 4 to prevent the main circuit board 4 from overheating.

[0041] In a preferred embodiment, the oxygen generating unit 5 can be arranged adjacent to the second air inlet 121b. The second heat dissipation air passage L2 passes sequentially through the gap between the oxygen generating unit 5 and the main housing 1, the gap between the intake and exhaust control valve 6 and the main housing 1, and the gap between the main circuit board 4 and the main housing 1 before being drawn into the cooling fan 2. Thus, although the airflow path through the second heat dissipation air passage L2 is relatively long, the heat generated by the oxygen generating unit 5 and the intake and exhaust control valve 6 is relatively small, easily meeting their heat dissipation needs. After flowing through the oxygen generating unit 5 and the intake and exhaust control valve 6, the cooling air does not significantly increase in temperature and can further flow through the main circuit board 4 and the compressor 3, thereby fully utilizing the cooling air to remove heat from the oxygen generator. The cooling air drawn in from the second air inlet 121b can flow through both sides of the oxygen generating unit 5 and the intake and exhaust control valve 6, or, due to the irregular outer contour of the intake and exhaust control valve 6, the cooling air can flow through the intake and exhaust control valve 6.

[0042] In a preferred embodiment of the utility model, a main support 7 can be arranged in the main housing 1, and each of the components to be cooled is mounted on the main support 7. For example, the main support 7 can be formed with a compressor compartment for mounting the compressor 3 and an adsorption tower compartment for mounting the oxygen generating unit 5, and the two are arranged close to the first end and the second end of the main housing 1, respectively. The cooling fan 2 and the air inlet nitrogen discharge control valve 6 can be arranged above the compressor 3 and mounted on the main support 7, respectively. Thus, not only is it convenient to realize the gas path connection between the compressor, the air inlet nitrogen discharge control valve and the oxygen generating unit through a shorter pipeline, but it is also convenient to set the first cooling gas path L1 and the second cooling gas path L2 which can effectively cool them.

[0043] In order to facilitate the cooling air to be evenly sucked into the first cooling gas path L1 and the second cooling gas path L2, the main housing 1 can have a housing body 11 and air inlet grilles 12 which are respectively detachably connected to the first side and the second side of the housing body 11, and a first air inlet 121a and a second air inlet 121b are respectively formed on the corresponding air inlet grilles 12. Thus, during the operation of the cooling fan 2, the air in the external environment can be sucked into the first cooling gas path L1 and the second cooling gas path L2 through the air inlet grilles 12, avoiding the local airflow to be small and causing uneven cooling.

[0044] The air inlet grilles 12 can be fixed on the housing body 11 through buckles 122 for disassembly and assembly. As shown in Figure 2 and Figures 5a to 6 In a preferred embodiment, the air inlet grilles 12 can include a grille plate body 121 and a buckle 122 which is operatively connected to the grille plate body 121, and the buckle 122 has an elastically deformed portion 122a which abuts against the grille plate body 121 and a clamping portion 122b which is used for clamping to the housing body 11. When disassembling or assembling, the elastically deformed portion 122a is deformed by pressing a pressing portion 122c which protrudes out of the housing body 11 from the clamping portion 122b, so that the clamping portion 122b is disengaged from or engaged in the clamping position, thereby disassembling or assembling the air inlet grilles 12 from or to the housing body 11. Figure 5a and Figure 5b The buckle 122 is shown in a perspective view, Figure 6The three-dimensional structure of the grid plate body 121 is shown. Among them, the buckle mounting groove 1211 for mounting the buckle 122 can be formed on the grid plate body 121, and the buckle limiting hole 1212 and the pressing guide groove 1213 are arranged on the inner and outer sides of the buckle mounting groove 1211 respectively. When the buckle 122 is installed into the buckle mounting groove 1211, the limiting boss 122d on the inner side of the buckle 122 is located in the buckle limiting hole 1212 of the grid plate body 121, thereby limiting the limit relative position of the buckle 122 relative to the grid plate body 121; the pressing part 122c on the outer side of the buckle 122 cooperates with the pressing guide groove 1213 of the grid plate body 121, thereby guiding the buckle 122 to slide in the buckle mounting groove 1211 in a predetermined direction.

[0045] The elastic deformation part 122a of the buckle 122 can be formed in various suitable forms as long as it can make the buckle 122 elastically reset to the clamping position. In the preferred embodiment shown in the figure, the elastic deformation part 122a is formed as an annular arm abutting against the bottom wall of the buckle mounting groove 1211, so that the annular arm can be elastically deformed by pressing the pressing part 122c of the buckle 122. In addition, the elastic deformation part 122a in this form can also make the annular arm fit the peripheral wall of the buckle mounting groove 1211, thereby facilitating the stable pressing and resetting of the buckle 122. Specifically, the annular arm includes two upper arms and a lower arm integrally formed with the upper arms, the two upper arms are symmetrically arranged and the included angle formed by the two upper arms is obtuse, the lower arm has a certain arc, and the bottom end is smoothly transitioned to increase the contact area with the bottom wall of the buckle mounting groove 1211. In addition, in order to realize the stable movement of the buckle 122 in the buckle mounting groove 1211, a plurality of limiting strips are arranged on the side surface, front surface or back surface of the main body of the buckle 122.

[0046] The utility model also provides a kind of oxygen generator comprising the heat dissipation system described above, by optimizing heat dissipation gas path design, heat dissipation system can effectively take away the heat of main machine shell and each element to be radiated, so that the relevant components in oxygen generator work in suitable temperature range, thereby be favorable to prolong the service life of oxygen generator.

[0047] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to this. Within the technical concept range of the utility model, the technical solutions of the utility model can be subjected to various simple modifications, including the combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the utility model will not be described again for various possible combination manners. However, these simple modifications and combinations should also be regarded as the disclosed content of the utility model, and all belong to the protection scope of the utility model.

Claims

1. An oxygen generator heat dissipation system, characterized in that, The main shell (1) is provided with a first air inlet (121a), and a heat dissipation fan (2) is installed in the main shell (1). The first air inlet (121a) and the heat dissipation fan (2) form a first heat dissipation air passage (L1), and the first heat dissipation air passage (L1) is provided with a component to be cooled. The main shell (1) is provided with an air guide hole (72) for guiding the cooling air sucked by the first air inlet (121a) to flow to one of the components to be cooled.

2. The oxygen generator heat dissipation system of claim 1, wherein, The component to be cooled includes at least one of a main circuit board (4), a compressor (3), an oxygen generating unit (5), and an air inlet nitrogen control valve (6).

3. The oxygen generator heat dissipation system of claim 2, wherein, The first air inlet (121a) is arranged at a first end of the main shell (1), and an air outlet (111) is arranged on a side wall adjacent to the first end of the main shell (1). The main circuit board (4) is arranged opposite to another side wall of the main shell (1), and the air guide hole (72) is arranged to guide the cooling air sucked by the first air inlet (121a) to flow to the main circuit board (4).

4. The oxygen generator heat dissipation system of claim 3, wherein, A second air inlet (121b) is arranged at a second end of the main shell (1) opposite to the first end, so as to form a second heat dissipation air passage (L2) between the second air inlet (121b) and the heat dissipation fan (2).

5. The oxygen generator heat dissipation system of claim 4, wherein, An air outlet end of the heat dissipation fan (2) faces the compressor (3). After the cooling air sucked by the first air inlet (121a) and the second air inlet (121b) is blown to the compressor (3) through the heat dissipation fan (2), the cooling air is discharged through the air outlet (111).

6. The oxygen generator heat dissipation system of claim 4, wherein, The compressor (3) is arranged adjacent to the first air inlet (121a), and the oxygen generating unit (5) is arranged adjacent to the second air inlet (121b). At least part of the cooling air in the second heat dissipation air passage (L2) is sequentially sucked into the heat dissipation fan (2) through gaps between the oxygen generating unit (5), the air inlet nitrogen control valve (6), and the main circuit board (4) and the main shell (1).

7. The oxygen generator heat dissipation system of claim 4, wherein, The main shell (1) has a shell body (11) and air inlet grilles (12) respectively detachably connected to the first end and the second end of the shell body (11). The first air inlet (121a) and the second air inlet (121b) are respectively formed in the corresponding air inlet grilles (12).

8. The oxygen generator heat dissipation system of claim 7, wherein, The air inlet grille (12) includes a grille plate body (121) and a buckle (122) operatively connected to the grille plate body (121). The buckle (122) has an elastically deformed portion (122a) abutting against the grille plate body (121) and a clamping portion (122b) for clamping to the shell body (11).

9. The heat dissipation system of the oxygen generator according to any one of claims 1 to 8, wherein, The main shell (1) is provided with a main support (7), and each component to be cooled is installed to the main support (7). An air guide baffle (71) is arranged at one end of the main support (7) facing the first air inlet (121a), so as to define the air guide hole (72) by the air guide baffle (71).

10. An oxygen generator, characterized by comprising: The oxygen generator has a heat dissipation system according to any one of claims 1 to 9.

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