Light-duty DC inverter oxygen generator

Abstract

To provide a light-tone DC inverter oxygen generating machine including a case in which a hood panel is installed inside. [Solution] A hood panel 1 encases an internal DC inverter compressor 6, and a support plate is installed below the hood panel, the upper surface of the support plate is connected to the DC inverter compressor upward by a peripheral spring vibration damping bracket, and an air intake groove 7 is opened at corresponding positions on the surface of the hood panel and case 9 on the same side, and a bow-shaped air duct groove 2 is connected to the upper surface of the hood panel by a U-shaped connecting plate with threaded holes, and a circulation fan is installed inside the bow-shaped air duct groove, with the air intake port of the bow-shaped air duct groove at the lowest end and the inner surface of the air intake port corresponding to the inner area of ​​the hood panel. The DC inverter oxygen generator adjusts the internal structure and operating mode of the components to ultimately achieve the result of reducing the noise of the product.

Description

[Technical Field]

[0001] The present invention relates to the technical field of oxygen generators, and more particularly to a low-frequency DC inverter oxygen generator. [Background technology]

[0002] Existing oxygen generators use the adsorption properties of molecular sieves and rely on physical principles to separate nitrogen and oxygen from the air using large-displacement, oil-free compressors as power sources, ultimately obtaining highly concentrated oxygen. This type of oxygen generator can generate oxygen quickly and with high oxygen concentration, making it suitable for oxygen therapy and oxygen health care for a variety of people.

[0003] In actual use, since the oxygen generator is close to the user, its own noise control is particularly important and directly affects the user experience. The main noise sources of existing oxygen generators include the noise generated when the compressor is operating, the switching noise of the diaphragm valve, the nitrogen discharge noise of the molecular sieve assembly, and the noise of the internal heat dissipation fan. At present, it is not possible to fundamentally eliminate all noise, so how to reduce noise has been a topic of joint research within the industry. The mainstream solution is to pass the nitrogen through a nitrogen discharge muffler to reduce and muffle the noise before discharging it. To improve the noise reduction effect during nitrogen discharge, multiple nitrogen discharge mufflers can usually be installed to reduce noise. However, due to the constraints of the internal installation space of the oxygen generator and the resonance phenomenon, installing multiple nitrogen discharge mufflers inside the housing of the oxygen generator to reduce noise during nitrogen discharge conflicts with the traditional structural layout and is likely to generate new resonance noise. Summary of the Invention [Problem to be solved by the invention]

[0004] To address the above-mentioned problems, the present application provides a low-noise DC inverter oxygen generator, which addresses the main source components that generate noise from the oxygen generator, adjusts the internal structure and operating mode of the components, and ultimately achieves the result of reducing the noise of the product. [Means for solving the problem]

[0005] To achieve the above objectives, the technical solutions adopted by the present invention are as follows: A low-noise DC inverter oxygen generator including a case with a hood panel installed inside, the hood panel enclosing an internal DC inverter compressor, a support plate installed below the hood panel, the DC inverter compressor connected upward to the upper surface of the support plate by a peripheral spring vibration damping bracket, an air intake groove opened at corresponding positions on the surface of the hood panel and the case located on the same side, a bow-shaped air duct groove connected to the upper surface of the hood panel by a U-shaped connecting plate with a screw hole, a circulation fan installed inside the bow-shaped air duct groove, an air intake port of the bow-shaped air duct groove located at the lowest end, the inner surface of the air intake port corresponding to the internal region of the hood panel, and an air outlet of the bow-shaped air duct groove fitted inside the case and extending outward.

[0006] As a further optimization of this proposal, a sound-absorbing base is installed at the bottom of the case, a diaphragm valve is installed in the lower region of the supporting plate inside the sound-absorbing base, the molecular sieve assembly inside the case is assembled upside down, and the intake hole of the molecular sieve assembly is located inside the sound-absorbing base, and the intake hole is connected to the interface corresponding to the diaphragm valve by a pipe.

[0007] As a further optimization of this invention, an intake silencer is installed in the intake pipe of the DC inverter compressor.

[0008] As a further optimization of the present invention, the exhaust line of the DC inverter compressor is connected to a condenser pipe.

[0009] As a further optimization of the present invention, the condenser tube is connected by a pipe to a corresponding interface of the diaphragm valve.

[0010] As a further optimization of the present invention, the molecular sieve assembly is connected by a conduit to an outlet for oxygen.

[0011] As a further optimization of the present invention, a control circuit panel is mounted above the hood panel.

[0012] As a further optimization of the present invention, the arcuate air passage groove is installed on the top end of the molecular sieve assembly which is assembled upside down. [Effects of the Invention]

[0013] To sum up, the technical effects and advantages of the present invention are as follows:

[0014] 1. Fan operation method: The fan extracts heat from inside the machine and then extracts it to the outside. The room temperature air from outside enters the machine, absorbs the heat, raises its temperature, and is then extracted again by the fan, circulating in this way. The fan has a smooth air outlet and little wind resistance, which ensures heat dissipation while effectively reducing noise generation.

[0015] 2. Assembly of molecular sieve assembly: The main operating noise of the machine comes from the switching sound of the compressor and diaphragm valve and the nitrogen discharge sound. This product installs the diaphragm valve inside the base and close to the bottom of the compressor, and uses the compressor and diaphragm valve to generate sound wave cancellation. In addition, because the internal space of the base is large, it is easy to adjust the sound absorption structure, and can effectively suppress the noise propagation and achieve the noise reduction result.

[0016] 3. Compressor operating characteristics: A DC inverter compressor is used to provide the air source, and its noise frequency is relatively stable, making it easy to muffle and reduce noise. The oxygen concentration is detected and fed back by an oxygen concentration sensor to control the compressor's output power and rotation speed, achieving the inverter's energy-saving effects. The compressor can achieve the oxygen concentration standard even in a low-pressure plateau environment, thereby improving user satisfaction. [Brief explanation of the drawings]

[0017] In order to more clearly describe the technical solutions in the embodiments of the present application or the existing technology, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the existing technology. It is obvious that the accompanying drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other accompanying drawings based on these accompanying drawings without any creative efforts. [Figure 1] 1 is a schematic diagram of the structure of the arc-shaped air duct of the oxygen generating device of the present invention (with some of the case and hood panel removed). [Figure 2] 1 is a schematic diagram of the structure of the air intake groove of the present invention (with some of the case and hood panel removed). [Figure 3] 1 is a schematic diagram of the internal structure of the sound-absorbing base of the present invention (with some of the case and hood panel removed). DETAILED DESCRIPTION OF THE INVENTION

[0018] The following clearly and completely describes the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative effort are all within the scope of protection of the present invention.

[0019] Considering the constraints of the installation space inside the oxygen generating machine and the resonance phenomenon, arranging multiple nitrogen exhaust silencers inside the housing of the oxygen generating machine to reduce noise when nitrogen is discharged conflicts with the conventional structural layout and is prone to generating new resonance noise.

[0020] As shown in FIGS. 1 to 3, the present application includes a case 9 with a hood panel 1 installed therein, the hood panel 1 enclosing a DC inverter compressor 6 therein, and a support plate 12 installed below the hood panel 1, the DC inverter compressor 6 connected upward to the upper surface of the support plate 12 by a peripheral spring vibration-damping bracket, and an air intake groove 7 is opened at a position corresponding to the surface of the hood panel 1 and the case 9 located on the same side, and a bow-shaped air passage groove 2 is connected to the upper surface of the hood panel 1 by a U-shaped connecting plate with screw holes, and a circulation fan 5 is installed inside the bow-shaped air passage groove 2, the air intake 3 of the bow-shaped air passage groove 2 is located at the lowest end, and the inner surface of the air intake 3 corresponds to the internal region of the hood panel 1, and the air outlet 4 of the bow-shaped air passage groove 2 is fitted inside the case 9 and extends outward,

[0021] Specifically, external cool air enters the interior area of ​​the hood panel 1 surrounding the DC inverter compressor 6 through the air intake groove 7 and removes the heat generated by the operation of the DC inverter compressor 6. Hot air is drawn out through the air intake 3 of the arc-shaped air duct groove 2 on the other side, passes through the arc-shaped air duct groove 2, and is blown out of the machine through the air outlet 4 via the circulation fan 5, thereby achieving the purpose of reducing the temperature. The smooth air outlet of the fan reduces wind resistance, ensuring heat dissipation and effectively reducing noise generation.

[0022] A silencer base 14 is installed at the bottom of the case 9, and a diaphragm valve 13 is installed in the lower area of ​​the support plate 12 inside the silencer base 14. The molecular sieve assembly 8 is assembled upside down inside the case 9, and the intake port of the molecular sieve assembly 8 is located inside the silencer base 14 and connected to the interface corresponding to the diaphragm valve 13 by a pipe. An intake silencer 10 is installed in the intake line of the DC inverter compressor 6, and the exhaust line of the DC inverter compressor 6 is connected to the condenser pipe 11, and the condenser pipe 11 is connected to the interface corresponding to the diaphragm valve 13 by a pipe. The molecular sieve assembly 8 is connected to the oxygen outlet by a pipe.

[0023] Specifically, the molecular sieve assembly 8 is assembled upside down, and its intake direction and diaphragm valve 13 are placed below the support plate 12. The molecular sieve assembly 8 and the diaphragm valve 13 are adjusted and assembled to the lowest position of the machine base, and the support plate 12 is used for sound insulation, thereby achieving the purpose of noise reduction. The DC inverter compressor 6 generates a sound wave cancellation part together with the diaphragm valve 13. The internal space of the sound-absorbing base 14 is large, making it easy to adjust the sound-absorbing structure, which can effectively suppress noise propagation and achieve the result of noise reduction.

[0024] The DC inverter compressor 6 mainly provides compressed gas as its gas source. The main gas flow path is as follows: air enters the DC inverter compressor 6 through the intake silencer 10, and the other end of the DC inverter compressor 6 is exhausted to the condenser pipe 11, which then reaches the diaphragm valve 13, and then the molecular sieve assembly 8, and finally the oxygen is discharged from the oxygen outlet. The control circuit panel is used to control the coordinated operation of each internal component of the oxygen generator.

[0025] When setting the oxygen generation amount of different gears of this light-tone DC inverter oxygen generator, the power consumption and noise corresponding to the DC inverter compressor 6 will also be different. This can be adjusted according to the needs of users, meeting different levels of users and achieving energy-saving effects. The power consumption and noise of each gear of the DC inverter compressor 6 are relatively stable, making noise control easy, and the noise frequency is relatively stable, making it easy to muffle and reduce noise. The oxygen concentration is detected and fed back by an oxygen concentration sensor, which controls the output power and rotation speed of the compressor, thereby achieving the inverter and energy-saving effects. The compressor can achieve the oxygen concentration standard even in a low-pressure plateau environment, thereby improving user satisfaction.

[0026] Finally, it should be clarified that the above is only a preferred embodiment of the present invention and is not used to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may modify the technical solutions described in the above embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall all fall within the protection scope of the present invention. [Explanation of symbols]

[0027] In the figure, 1, hood panel, 2, arched air duct groove, 3, air intake port, 4, air outlet, 5, circulation fan, 6, DC inverter compressor, 7, air intake passage groove, 8, molecular sieve assembly, 9, case, 10, air intake silencer, 11, condenser tube, 12, supporting metal plate, 13, diaphragm valve, 14, silencer base.

Claims

1. A light-duty DC inverter oxygen generator including a case (9) with a hood panel (1) installed inside, the hood panel (1) encases an internal DC inverter compressor (6), and a support plate (12) is installed below the hood panel (1), and the DC inverter compressor (6) is connected upward to the upper surface of the support plate (12) by a peripheral spring vibration damping bracket, and the hood panel (1) and the case (9) located on the same side both have intake vents at corresponding positions on their surfaces. a groove (7) is opened, a bow-shaped air duct groove (2) is connected to the upper surface of the hood panel (1) by a U-shaped connecting plate with a screw hole, a circulation fan (5) is installed inside the bow-shaped air duct groove (2), an air intake (3) of the bow-shaped air duct groove (2) is located at the lowest end, and the inner surface of the air intake (3) corresponds to the inner area of ​​the hood panel (1), and an air outlet (4) of the bow-shaped air duct groove (2) is fitted inside the case (9) and extends to the outside.

2. 2. The DC inverter oxygen generator according to claim 1, wherein a sound-absorbing base (14) is installed at the bottom of the case (9), a diaphragm valve (13) is installed in the lower area of ​​the supporting plate (12) inside the sound-absorbing base (14), the molecular sieve assembly (8) inside the case (9) is assembled upside down, and the intake hole of the molecular sieve assembly (8) is located inside the sound-absorbing base (14), and the intake hole is connected to the interface corresponding to the diaphragm valve (13) by a pipe.

3. 2. The DC inverter oxygen generating machine according to claim 1, wherein an intake silencer (10) is installed in the intake pipe of the DC inverter compressor (6).

4. 3. The DC inverter oxygen generating machine according to claim 2, wherein the exhaust pipe of the DC inverter compressor (6) is connected to a condenser pipe (11).

5. 5. The DC inverter oxygen generating machine according to claim 4, wherein the condenser pipe (11) is connected to a corresponding interface of the diaphragm valve (13) by a pipe.

6. 6. The DC inverter oxygen generating machine according to claim 5, wherein the molecular sieve assembly (8) is connected to an oxygen outlet by a pipe.

7. 2. The light-duty DC inverter oxygen generating machine according to claim 1, wherein a control circuit panel is attached above the hood panel (1).

8. 3. The DC inverter oxygen generating machine according to claim 2, wherein the arched air passage groove (2) is installed on the upper end of the molecular sieve assembly (8) which is assembled upside down.

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