Air cleaning, silencing and filtering device for oxygen generator

Abstract

The invention relates to the field of medical, household and health-care oxygen generators, in particular to an air cleaning, silencing and filtering device for an oxygen generator. The filter box base is of a shallow groove-shaped structure with a base elbow on one side, a first silencing pipe wall and a first annular pipe head are coaxially arranged at an end through hole of a main body part of the filter box base up and down, a second silencing pipe wall and a second annular pipe head are coaxially arranged at an end through hole of the base elbow up and down, and the second annular pipe head is communicated with one end of a connecting pipe; the top of the filter box base is in plug-in fit with the filter box along with the shape; the lower end of the filter box extends to the bottom of the shallow groove-shaped structure of the filter box base; the filter box is of a deep groove structure with a filter box elbow on one side, the lower end of the filter box elbow is open, the upper end and the lower end of a filter box body part are open, a filter cover is installed at the opening of the upper end, and filter cotton is arranged in an inner cavity of the filter box body part. The problems that in the prior art, a filter device is small in installation space, filter cotton is inconvenient to replace, and the noise reduction effect is poor are solved.

Description

Technical Field

[0001] The invention relates to the field of medical, household and health-care oxygen concentrators, and in particular to an air cleaning and silencing filtering device for an oxygen concentrator. Background Art

[0002] Oxygen, as an essential gas for human survival, plays a very important role in daily life, especially in medical emergency. Usually, people store the prepared oxygen in cylinders at low temperature and pressure for emergency use, but it is very inconvenient to use. Therefore, oxygen concentrators came into being. Oxygen concentrators can not only be used for medical emergency, but also can promote blood circulation, clear the mind, eliminate fatigue, and effectively improve work efficiency. The noise of existing household oxygen concentrators on the market is usually around 50dB. When placed indoors at night, the noise will make people irritable, affect sleep, and seriously affect the effect of oxygen therapy.

[0003] In order to reduce the impact on users, household oxygen concentrators have high requirements for quietness. The current household oxygen concentrators are small in size and have limited air duct space. Both the noise reduction and heat dissipation effects are unsatisfactory. After installation, the airflow noise is too loud, and the low-frequency noise of the oxygen concentrator intake has a significant impact on human sleep and concentration. In addition, the filtering device and the silencer in the prior art have many components and high costs. Summary of the invention

[0004] The object of the present invention is to provide an air cleaning and silencing filter device for an oxygen concentrator, so as to solve the problems in the prior art of small installation space of the filter device, inconvenient replacement of filter cotton, poor silencing and noise reduction effect, etc.

[0005] The technical solution of the present invention is: An air cleaning and silencing filter device for an oxygen concentrator, a filter box base is provided on a mounting frame, the filter box base is a shallow groove-shaped structure with a base elbow on one side, a first silencer pipe wall and a first annular pipe head are coaxially arranged at the end through hole of the main part of the filter box base, a second silencer pipe wall and a second annular pipe head are coaxially arranged at the end through hole of the base elbow, the second annular pipe head is connected to one end of a connecting pipe, and the other end of the connecting pipe is connected to a compressor; a filter box sealing gasket is arranged at the bottom of the shallow groove-shaped structure of the filter box base, and the through holes at both ends of the filter box sealing gasket are respectively sleeved on the first silencer pipe wall and the second silencer pipe wall; The top of the filter box base is fitted with the filter box, and the lower end of the filter box extends to the bottom of the shallow groove structure of the filter box base and is in close contact with the filter box sealing gasket to seal the filter box and the filter box base; the filter box is a deep groove structure with a filter box elbow on one side, the lower end of the filter box elbow is open and corresponds to the base elbow, and the second silencer pipe wall is connected to the inner cavity of the filter box elbow; the upper and lower ends of the filter box main body are open, the lower end opening corresponds to the main body of the filter box base, the first silencer pipe wall is connected to the inner cavity of the main body of the filter box base, a filter cover is installed at the upper end opening, and filter cotton is provided in the inner cavity of the filter box main body.

[0006] The air cleaning and silencing filtering device for the oxygen concentrator has a mounting frame and a filter box base which are an integral injection molding structure.

[0007] In the air cleaning and silencing filter device for an oxygen concentrator, the groove width of the base elbow is smaller than the groove width of the filter box base body, and the groove width of the filter box elbow is smaller than the groove width of the filter box body.

[0008] In the air cleaning and silencing filter device for an oxygen concentrator, the filter box base is fastened to the outer side of the filter box by screws.

[0009] The air cleaning and silencing filtering device for the oxygen concentrator has a filter cover with a filter cover sealing ring corresponding to the upper end opening.

[0010] In the air cleaning and silencing filter device for an oxygen concentrator, the filter cotton is located between the filter cotton limiting ribs symmetrically arranged on the side walls of the inner cavity of the main body of the filter box.

[0011] In the air cleaning and silencing filter device for an oxygen concentrator, the filter cotton is installed in the filter box by interference fit.

[0012] The advantages and beneficial effects of the present invention are: 1. The air cleaning and silencing filtering device of the present invention has the function of silencing and reducing noise.

[0013] 2. The air cleaning and silencing filtering device of the present invention is easy to assemble and the filter cotton can be replaced simply.

[0014] 3. The air cleaning and silencing filtering device of the present invention has high space utilization 4. The air cleaning and silencing filtering device of the present invention has low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the assembly of the present invention (the filter box is cut open).

[0017] In the figure, 1-filter cover; 2-filter cover sealing ring; 3-filter cotton; 4-filter box; 5-screw; 6-filter box sealing gasket; 7-second silencer pipe wall; 8-second annular pipe head; 9-connecting pipe; 10-first silencer pipe wall; 11-first annular pipe head; 12-filter cotton limiting rib; 13-installation frame; 14-filter box base; 15-base elbow; 16-filter box elbow. DETAILED DESCRIPTION

[0018] like Figure 1-Figure 2 As shown, the present invention proposes an air cleaning and silencing filter device for an oxygen concentrator, which mainly includes a filter cover 1, a filter cover sealing ring 2, filter cotton 3, a filter box 4, a screw 5, a filter box sealing gasket 6, a second silencer pipe wall 7, a second annular pipe head 8, a connecting pipe 9, a first silencer pipe wall 10, a first annular pipe head 11, a filter cotton limiting rib 12, a mounting frame 13, a filter box base 14, etc. The specific structure is as follows: A filter box base 14 is provided on the mounting frame 13. The mounting frame 13 and the filter box base 14 are an integral injection molding structure. The filter box base 14 is a shallow groove structure with a base elbow 15 on one side. The groove width of the base elbow 15 is smaller than the groove width of the main part of the filter box base 14. The end through hole of the main part of the filter box base 14 is coaxially provided with a first silencer pipe wall 10 and a first annular pipe head 11. The end through hole of the base elbow 15 is coaxially provided with a second silencer pipe wall 7 and a second annular pipe head 8. The second annular pipe head 8 is connected to one end of the connecting pipe 9, and the other end of the connecting pipe 9 is connected to the compressor; a filter box sealing gasket 6 is provided at the bottom of the shallow groove structure of the filter box base 14, and the through holes at both ends of the filter box sealing gasket 6 are respectively sleeved on the first silencer pipe wall 10 and the second silencer pipe wall 7.

[0019] The top of the filter box base 14 is matched with the filter box 4 in a form-fitting manner, the lower end of the filter box 4 extends to the bottom of the shallow groove structure of the filter box base 14, and is in close contact with the filter box sealing gasket 6, and the filter box base 14 is fastened to the outside of the filter box 4 by screws 5; the filter box 4 is a deep groove structure with a filter box elbow 16 on one side, and the groove width of the filter box elbow 16 is smaller than the groove width of the main part of the filter box 4; the lower end of the filter box elbow 16 is open and corresponds to the base elbow 15, and the second silencer pipe wall 7 is connected to the filter box 4. The inner cavity of the filter box elbow 16 is connected; the upper and lower ends of the main part of the filter box 4 are open, and the lower end opening corresponds to the main part of the filter box base 14. The first silencer pipe wall 10 is connected to the inner cavity of the main part of the filter box base 14. The filter cover 1 is installed at the upper end opening. The filter cover 1 is provided with a filter cover sealing ring 2 corresponding to the upper end opening. Filter cotton 3 is provided in the inner cavity of the main part of the filter box 4. The filter cotton 3 is located between the filter cotton limiting ribs 12 symmetrically arranged on the side walls of the inner cavity of the main part of the filter box 4.

[0020] The functions of each component are as follows: The filter cover 1 is used to seal the filter box 4 to prevent noise from spreading to the outside, facilitate the replacement of the filter cotton 3, support the filter cover sealing ring 2, and ensure the internal sealing of the filter box 4; The filter cover sealing ring 2 is assembled between the filter cover 1 and the filter box 4 to block the sound from transmitting to the outside, and compress the filter cotton 3 so that the air can only pass through the filter cotton 3 when flowing; The filter cotton 3 is installed in the filter box 4 with an interference fit, and filters the air flowing in the filter box 4, and can also "filter" the noise source; The filter box 4 is composed of a pipe and an elbow to silence the gas path, and uses noise reduction devices such as pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance to attenuate or reflect the noise in the pipe; Screw 5, fixing the filter box 4; The filter box sealing gasket 6 seals the filter box 4 and the filter box base 14 to prevent noise from leaking out; The gap between the second muffler pipe wall 7 and the filter box 4 is the position where the ventilation cross-sectional area is the smallest; The second annular pipe head 8 is plugged into the connecting pipe 9 for easy installation; Connecting pipe 9, a pipe connected to the noise source; The gap between the first muffler pipe wall 10 and the filter box 4 is the position where the air flow cross-sectional area is the smallest; The first annular pipe head 11, as an air inlet, can be inserted into a pipe to transfer the position of the air inlet or the outlet of the noise source; The filter cotton limiting rib 12 fixes the filter cotton 3 and ensures the position of the filter cotton 3; The mounting frame 13 is used to assemble the air cleaning, silencing and filtering device, and is easy to install and fix.

[0021] When the air cleaning and silencing filtering device of the present invention is used, air enters the filter box 4 from the first annular pipe head 11 and passes through the large volume cavity for silencing, large particle impurities in the gas are filtered by the filter cotton 3, and then passes through the filter box 4 for redirection insulation. After the cross-sectional area changes and the silencing is performed, the air enters the compressor from the second silencing pipe wall 7 through the connecting pipe 9, and the air outlet end of the compressor is connected to the molecular sieve tank for oxygen production.

Claims

1. An air cleaning and silencing filter device for an oxygen concentrator, characterized in that: A filter box base is provided on the mounting frame. The filter box base is a shallow groove-shaped structure with a base elbow on one side. A first silencer pipe wall and a first annular pipe head are coaxially provided at the end through hole of the main part of the filter box base, and a second silencer pipe wall and a second annular pipe head are coaxially provided at the end through hole of the base elbow. The second annular pipe head is connected to one end of the connecting pipe, and the other end of the connecting pipe is connected to the compressor. A filter box sealing gasket is arranged at the bottom of the shallow groove-shaped structure of the filter box base, and the through holes at both ends of the filter box sealing gasket are respectively sleeved on the first silencer pipe wall and the second silencer pipe wall. The top of the filter box base is matched with the filter box in a form-fitting manner, and the lower end of the filter box extends to the bottom of the shallow groove structure of the filter box base and is in close contact with the filter box sealing pad, so that the filter box and the filter box base are sealed; The filter box is a deep groove structure with a filter box elbow on one side. The lower end of the filter box elbow is open and corresponds to the base elbow. The second silencer pipe wall is connected to the inner cavity of the filter box elbow. The upper and lower ends of the filter box main body are open, the lower end opening corresponds to the main body of the filter box base, the first silencer pipe wall is connected to the inner cavity of the main body of the filter box base, a filter cover is installed at the upper end opening, and filter cotton is provided in the inner cavity of the filter box main body.

2. The air cleaning and silencing filtering device for an oxygen concentrator according to claim 1, characterized in that: The mounting frame and the filter box base are an integral injection-molded structure.

3. The air cleaning and silencing filtering device for an oxygen concentrator according to claim 1, characterized in that: The groove width of the base elbow is smaller than the groove width of the main part of the filter box base, and the groove width of the filter box elbow is smaller than the groove width of the main part of the filter box.

4. The air cleaning and silencing filtering device for an oxygen concentrator according to claim 1, characterized in that: The filter box base is fastened to the outer side of the filter box by screws.

5. The air cleaning and silencing filtering device for an oxygen concentrator according to claim 1, characterized in that: The filter cover is provided with a filter cover sealing ring corresponding to the upper end opening.

6. The air cleaning and silencing filtering device for an oxygen concentrator according to claim 1, characterized in that: The filter cotton is located between the filter cotton limiting ribs symmetrically arranged on the side walls of the inner cavity of the main body of the filter box.

7. The air cleaning and silencing filtering device for an oxygen concentrator according to claim 1, characterized in that: The filter cotton is installed in the filter box with interference fit.

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