CN220424944U

CN220424944U - Oxygenerator

Info

Publication number: CN220424944U
Application number: CN202321853980.0U
Authority: CN
Inventors: 羊全钢; 周若朋; 黄唐
Original assignee: Kefu Medical Technology Co ltd
Current assignee: Kefu Medical Technology Co ltd
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2024-02-02
Anticipated expiration: 2033-07-14

Abstract

The utility model provides an oxygenerator. The oxygenerator comprises a housing, a compressor, a molecular sieve and a compressor cover, wherein the compressor, the molecular sieve and the compressor cover are arranged in the housing, the compressor cover is sleeved on the compressor, a silencing chamber is arranged above the compressor cover, an air inlet is formed in the top of the compressor cover and communicated with the silencing chamber, a silencing cotton sleeve is arranged on the side wall of the silencing chamber, and a fan is arranged in the silencing chamber so that air outside the silencing chamber enters the silencing chamber through the silencing cotton sleeve and enters the inside of the compressor cover through the air inlet. According to the utility model, by additionally arranging the silencing chamber, the noise generated during the operation of the fan and the operation of the compressor can be well absorbed, and the noise level of the whole machine during the operation of the oxygenerator can be effectively reduced.

Description

Oxygenerator

Technical Field

The utility model relates to the technical field of small-sized oxygen generating equipment, in particular to an oxygen generator.

Background

The existing small-sized oxygenerator on the market mainly adopts the principle of pressure swing adsorption technology to produce oxygen, and the principle scheme needs to compress air, so that oxygenerator equipment adopting the scheme is provided with a compressor.

When the compressor works, a large amount of heat is accumulated in the equipment due to the fact that the compressor works on the air, and if the generated heat is not discharged out of the equipment in time, the temperature inside the oxygenerator is too high, so that the normal operation of the equipment is affected. And the high-temperature and high-pressure gas generated by the operation of the compressor is also required to be led into the molecular sieve after being cooled down and cooled, so that the adsorption efficiency of the molecular sieve is improved.

The small-sized oxygenerator is limited by power, volume and weight, and generally adopts air cooling to dissipate heat. Under the condition that the heat transfer medium is air, the radiating effect of air cooling and the air quantity generated by the radiating fan are positively correlated, and the air quantity generated by the fan and the noise generated when the fan works are greatly influenced by the air inlet area of the fan.

The operation of compressor and radiator fan all can produce the noise in oxygenerator during operation, and wherein the noise part that the compressor produced is absorbed by the compressor aircraft bonnet, and part is guided to follow-up silencing device through the heat dissipation air exit on the compressor shock attenuation board and is absorbed. However, as the fan is used for radiating the heat of the compressor, the compressor cover is provided with the heat radiation air inlet, which causes a part of noise generated by the operation of the compressor to escape from the heat radiation air inlet to the inside of the oxygenerator, thereby increasing the level of the noise generated by the operation of the whole oxygenerator.

The common radiator fan of the oxygenerator is directly exposed in the oxygenerator, so that the air inlet area can be maximized, but the noise of the running equipment cannot be controlled; or the cooling fan is arranged in the special silencing bin, only one side of air inlet is reserved, so that the noise of equipment operation can be well controlled, but the air inlet area of the cooling fan is reduced, the air quantity of the fan is reduced, and the heat dissipation performance of the equipment is poor.

Disclosure of Invention

The utility model aims to provide an oxygenerator which can better meet the requirements of equipment operation noise reduction.

The technical scheme of the utility model is as follows: the utility model provides an oxygenerator includes the housing, sets up compressor, molecular sieve and the compressor cover in the housing, the compressor cover suit is on the compressor, the compressor cover top is equipped with the amortization room, the compressor cover top is equipped with the air intake, the air intake with the amortization room intercommunication, the lateral wall of amortization room is the amortization cotton sleeve, be equipped with the fan in the amortization room to make the outside air of amortization room get into the amortization room and enter into through the air intake inside the compressor cover through amortization cotton sleeve.

Preferably, the silencing cotton sleeve is a rectangular frame with two through ends in the hollow inside, and the upper end of the silencing cotton sleeve is sequentially provided with silencing cotton and a cover plate.

Preferably, a plurality of brackets are further arranged in the silencing chamber, the silencing cotton sleeve is sleeved on the brackets, and the bottom end of the silencing cotton sleeve is attached to the upper surface of the compressor cover.

Preferably, the support comprises two vertical surfaces arranged at intervals, a top surface connected between the tops of the two vertical surfaces, and a bottom surface horizontally extending in the direction away from each other at the bottom of each vertical surface, wherein the bottom surface is fixedly connected with the compressor cover, the vertical surfaces are connected with the silencing cotton sleeves, and the top surface is used for supporting the silencing cotton and the cover plate.

Preferably, the cover plate is a non-porous plate, and the plurality of sides of the noise reduction cotton sleeve are used for air intake to form an air intake channel.

Preferably, the cover plate is a perforated plate, the holes on the perforated plate are vertically communicated, and the plurality of side surfaces of the silencing cotton sleeve and the holes on the cover plate are all in air so as to jointly form an air inlet channel.

Preferably, the silencing cotton sleeve is an integrally formed arch structure.

Preferably, the oxygenerator further comprises a cooling pipe which is arranged in the silencing chamber and is in a spiral shape, the cooling pipe comprises an air inlet pipe and an air outlet pipe, the silencing chamber is provided with an outlet through which the air inlet pipe and the air outlet pipe pass, and the air inlet pipe and the air outlet pipe of the cooling pipe respectively pass through the outlet on the silencing chamber and are connected with the compressor and the molecular sieve.

Preferably, the housing is provided with a compressor air inlet and a heat dissipation system air inlet, and the compressor air inlet is communicated with the compressor through a pipeline; and an air inlet of the heat radiation system is communicated with the fan through the silencing chamber.

Preferably, a damping plate for installing the compressor is arranged in the housing, and an air outlet communicated with the air inlet is arranged on the damping plate.

Compared with the related art, the utility model has the beneficial effects that:

1. the silencing chamber is arranged above the compressor cover, is a silencing cotton sleeve capable of absorbing noise, and can well absorb noise dissipated into the machine body from the air inlet on the compressor cover when the fan operates and the compressor operates, so that the noise level of the whole machine when the oxygenerator operates is effectively reduced;

2. according to the utility model, the material characteristics of the silencing cotton sleeve and the internal space of the silencing cotton sleeve are fully utilized, so that the fan can obtain air inlet flow from multiple directions, the air inlet area is increased, the generated air quantity of the fan is increased due to the improvement of the air inlet area, a better heat dissipation effect can be provided for the compressor, and the running stability of the compressor is improved;

3. the cooling pipe is installed at the air inlet side of fan, can directly dispel the heat to the cooling pipe when the fan is operated, makes the cooling pipe have better cooling effect, improves molecular sieve's adsorption efficiency, increases the oxygen generation concentration of oxygenerator.

Drawings

FIG. 1 is a schematic view showing an internal cross-sectional structure of an oxygenerator according to a first embodiment of the present utility model;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic view of a partial structure of the installation of the muffling chamber of FIG. 1;

FIG. 4 is a schematic view of the structure of the bracket in FIG. 1;

FIG. 5 is a schematic view showing the internal cross-sectional structure of an oxygenerator according to a second embodiment of the present utility model;

FIG. 6 is a schematic view of a partial structure of the installation of the muffling chamber of FIG. 5;

FIG. 7 is a schematic diagram showing an exploded structure of a part of components in an oxygenerator according to a third embodiment of the present utility model;

fig. 8 is a schematic view of the sound-deadening cover in fig. 7 in an installation section.

Detailed Description

The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.

Example 1

As shown in fig. 1 and 2, the present embodiment provides an oxygenerator including a housing 14, a molecular sieve 4, a compressor 5, a compressor cover 6, a damper plate 7, a fan 9, a sound deadening chamber 10, a cooling pipe 11, a PCBA plate 12, and a valve 13.

The housing 14 comprises a front cover 1 and a rear cover 2, wherein an equipment installation space 3 is formed inside the front cover 1 and the rear cover 2 after being covered, and other parts of the oxygenerator are all installed in the equipment installation space 3. The inner bottom of the housing 14 is provided with a shock absorbing plate 7, and the shock absorbing plate 7 is provided with an air outlet 7.1. The rear cover 2 is respectively provided with a compressor air inlet 2.1 and a heat dissipation system air inlet 2.2, so that relatively independent air intake is realized, the wind noise generated by air intake is reduced, and the overall noise level of the equipment is reduced.

The shock absorbing plate 7 is connected with a compressor cover 6, a compressor installation space 8 is formed between the compressor cover 6 and the shock absorbing plate 7, and the compressor 5 is arranged in the compressor installation space 8 and connected with the shock absorbing plate 7. An air inlet 6.1 is arranged on the compressor cover 6, and the air inlet 6.1, the compressor installation space 8 and the air outlet 7.1 are communicated.

The molecular sieve 4 is placed in the equipment installation space 3 and beside the compressor housing 6. The air inlet 6.1 is provided with a fan 9 and a cooling pipe 11. The silencing chamber 10 comprises a silencing cotton sleeve 10.1, a bracket 10.2, a cover plate 10.3 and silencing cotton 10.4. The silencing cotton sleeve 10.1 is a rectangular frame, and two hollow ends in the interior are communicated. The silencing cotton sleeve 10.1 is sleeved outside the fan 9 and the cooling pipe 11.

As shown in fig. 4, the bracket 10.2 includes two spaced vertical surfaces 10.2.2, a top surface 10.2.3 connected between the top of the two vertical surfaces 10.2.2, and a bottom surface 10.2.1 extending horizontally away from each other at the bottom of each vertical surface 10.2.2. Screw holes 10.2.4 are formed in the respective surfaces of the support 10.2. The silencing cover 6 is connected with screw holes 10.2.4 on the bottom surface 10.2.1 through screws. The noise reduction cotton sleeve 10.1 is connected with the screw holes 10.2.4 on the vertical surface 10.2.2 through screws. One end of the silencing cotton sleeve 10.1 is sleeved outside the fan 9, and the other end of the silencing cotton sleeve is sequentially covered with the silencing cotton 10.4 and the cover plate 10.3 from bottom to top. The silencing cotton 10.4 and the cover plate 10.3 are connected with screw holes 10.2.4 on the top surface 10.2.3 through screws. The noise-reducing cotton sleeve 10.1 is connected to the noise-reducing cover 6 by two supports 10.2 arranged at intervals. The inner width of the silencing cotton sleeve 10.1 is smaller than the outer width of the cover plate 10.3, so that the cover plate 10.3 can limit the movement of the silencing cotton sleeve 10.1 in the vertical direction after being installed.

The silencing cotton 10.4 is provided with a silencing cotton opening 10.4.1. The cover plate 10.3 is provided with a cover plate opening 10.3.1.

The cooling pipe 11 is in a spiral structure, and is provided with an air inlet pipe 11.1 and an air outlet pipe 11.2. The air inlet pipe 11.1 on the spiral cooling pipe 11 is positioned at the lower layer relative to the air outlet pipe 11.2, so that the cooling pipe 11 realizes air inlet at the lower part and air outlet at the upper part, and the phenomenon that the service life and adsorption efficiency of the molecular sieve 4 are influenced by the water brought into the molecular sieve 4 by the high-temperature high-pressure gas in the pipeline after being cooled can be prevented. The compressor 5 has an air inlet and an air outlet.

As shown in fig. 3, the cover plate 10.3 is provided with a PCBA plate 12 and a valve 13, which are existing parts of an oxygenerator, and the structural principle of the PCBA plate is not repeated.

In this embodiment, the cover plate 10.3 is a perforated plate, the holes on the perforated plate are vertically penetrated, and each hole and the silencing cotton sleeve 10.1 form an air inlet channel. As shown in fig. 1, the heat dissipation system air inlet 2.2 communicates with the equipment installation space 3, and also communicates with the hollow interior of the noise damping cotton sleeve 10.1 through the noise damping cotton sleeve 10.1 to form an air inlet passage. Namely, one air flow enters the interior of the silencing cotton sleeve 10.1 from the hole on the equipment installation space 3 and the cover plate 10.3 at the rear part from the air inlet 2.2 of the heat radiation system, and the other air flow directly enters from the side face of the silencing cotton sleeve 10.1, enters the compressor cover 6 from the air inlet 6.1 after passing through the fan 9, and finally is discharged from the air outlet 7.1.

The air inlet pipe 11.1 passes through the noise-reducing cotton opening 10.4.1 and the cover plate opening 10.3.1 upwards, then enters from the compressor cover 6, is communicated with the air outlet of the compressor 5, is used for discharging high-pressure high-temperature air flow discharged by the compressor 5, and cools the air flow in the cooling pipe 11. The air outlet pipe 11.2 passes through a through hole 10.1.1 on the silencing cotton sleeve 10.1 and is communicated with the molecular sieve 4, and is used for sending the gas cooled by the cooling pipe 11 to the molecular sieve 4 for adsorption. The air inlet of the compressor 5 communicates with the compressor air inlet 2.1 via a pipe for the intake of ambient air. That is, another air flow enters from the air inlet 2.1 of the compressor, enters the compressor 5 through the flow pipeline, enters the cooling pipe 11 from the air outlet of the compressor 5 and the air inlet pipe 11.1, flows through the cooling pipe 11 in a spiral way and is cooled, and then is discharged from the air outlet pipe 11.2 for adsorption of the molecular sieve 4.

In the present embodiment, the blower 9 can obtain the intake air flow from the plurality of sides and the top of the muffling chamber 10, increase the intake area, and improve the heat radiation capability of the blower. And the noise-reducing cotton sleeve 10.1 and the noise-reducing cotton 10.4 can well absorb noise dissipated from the air inlet 6.1 when the fan 9 runs and the compressor 5 runs.

The working principle of the oxygenerator provided by the utility model is as follows:

during normal operation of the oxygenerator, the compressor 5 and the blower 9 are operated simultaneously. The gas required for the operation of the compressor 5 is taken in from the compressor inlet 2.1, and after being pressurized in the compressor 5, a high-pressure high-temperature gas flow is formed in the pipeline, and when the gas flow flows through the cooler 11, the gas is cooled under the action of the fan 9, and the cooled high-pressure low-temperature gas enters the molecular sieve 4 to be adsorbed.

After the air flow led into the equipment installation space 3 in the air inlet 2.2 of the heat radiation system flows through the silencing chamber 10, the air flow is led to the air inlet 6.1, and the air inlet area of the air blower 9 is greatly improved due to the fact that the air blower 9 can obtain air inlet from multiple directions by the aid of the silencing chamber 10, the air inlet airflow velocity of the air blower 9 is lower, and air inlet noise is reduced. The air flow of the fan 9 during the air intake process can simultaneously radiate heat of components such as a PCBA 12 and a valve 13 (electromagnetic valve) which are arranged at the side and the top end of the silencing chamber 10.

The noise generated by the operation of the fan 9 and part of the noise generated by the operation of the compressor 5 which escapes through the air inlet 6.1 can be absorbed by the silencing material in the silencing chamber 10, so that the overall noise level of the oxygenerator during operation is controlled.

Finally, the air flow is blown into the compressor installation space 8 in the compressor cover 6 from the air inlet 6.1 by the fan 9, flows around the compressor 5 and takes away heat generated by the operation of the compressor 5, and finally is discharged from the air outlet 7.1 on the damping plate 7 into a subsequent silencer, so that the temperature of the system in which the oxygenerator operates is kept stable.

Example two

As shown in fig. 5 and 6, the first embodiment is repeated, except that in this embodiment, the cover plate 10.3 is a non-porous plate, and the noise damping cotton sleeve 10.1 is formed with an air inlet channel.

In this embodiment, the blower 9 can obtain the intake air flow from a plurality of sides of the muffling chamber 10, increase the intake area, and improve the heat dissipation capability of the blower. And the noise-reducing cotton sleeve 10.1 and the noise-reducing cotton 10.4 can well absorb noise dissipated from the air inlet 6.1 when the fan 9 runs and the compressor 5 runs.

Further, the noise-reducing cotton cover 10.1 and the noise-reducing cotton 10.4 can be made of a flexible material which has sound absorption property and can be breathable, such as sponge, glass fiber cotton, EVA foaming sponge and the like.

Example III

As shown in fig. 7 and 8, the first embodiment is repeated, except that in the present embodiment, the silencing chamber 10 is an arch-shaped silencing cover 10.5. The noise-reducing cover 10.5 is made of noise-reducing and air-permeable materials with certain strength, such as glass fiber porous composite materials or low-density polyurethane rigid foam. The sound-deadening hood 10.5 can be mounted on the compressor housing 6, with the fan 9 and the cooling pipe 11 placed therein. Alternatively, the noise reduction cover 10.5 is installed on the upper surface of the fan 9, and the air inlet side of the fan 9 and the cooling pipe 11 are placed therein.

The muffler cover 10.5 is provided with a first through hole 10.5.1 and a second through hole 10.5.2, and the first through hole 10.5.1 allows the air inlet pipe 11.1 to pass through. The second through hole 10.5.2 is provided for the passage of the air outlet pipe 11.2.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides an oxygenerator, includes housing (14), compressor (5), molecular sieve (4) and compressor cover (6) that set up in housing (14), compressor cover (6) suit is on compressor (5), its characterized in that, compressor cover (6) top is equipped with amortization room (10), compressor cover (6) top is equipped with air intake (6.1), air intake (6.1) with amortization room (10) intercommunication, amortization room (10) lateral wall is amortization cotton sleeve (10.1), be equipped with fan (9) in amortization room (10) to make the outside air of amortization room (10) get into amortization room (10.1) and enter into inside compressor cover (6) through air intake (6.1).

2. Oxygenerator according to claim 1, characterized in that said silencing cotton sheath (10.1) is a rectangular frame with two ends of internal hollow, and its upper end is provided with silencing cotton (10.4) and cover plate (10.3) in sequence.

3. Oxygenerator according to claim 2, characterized in that a plurality of brackets (10.2) are further arranged in the silencing chamber (10), the silencing cotton sleeve (10.1) is sleeved on the brackets (10.2), and the bottom end of the silencing cotton sleeve (10.1) is attached to the upper surface of the compressor cover (6).

4. An oxygenerator according to claim 3, wherein the support (10.2) comprises two vertical surfaces (10.2.2) arranged at intervals, a top surface (10.2.3) connected between the tops of the two vertical surfaces (10.2.2), and a bottom surface (10.2.1) horizontally extending in a direction away from each other at the bottom of each vertical surface (10.2.2), the bottom surface (10.2.1) being fixedly connected to the compressor housing (6), the vertical surfaces (10.2.2) being connected to the noise damping cotton sleeve (10.1), the top surface (10.2.3) being adapted to support the noise damping cotton (10.4) and the cover plate (10.3).

5. Oxygenerator according to claim 2, characterized in that the cover plate (10.3) is a non-porous plate, and in that the sides of the damping cotton sleeve (10.1) are fed to form an inlet channel.

6. Oxygenerator according to claim 2, characterized in that the cover plate (10.3) is a perforated plate, the holes in which are perforated up and down, and the sides of the silencing cotton sleeve (10.1) and the holes in the cover plate (10.3) are all fed with air to jointly form an air inlet channel.

7. Oxygenerator according to claim 1, characterized in that said silencing cotton sheath (10.1) is of an integrally formed arched structure.

8. Oxygenerator according to any one of claims 1-7, further comprising a cooling tube (11) arranged in the silencing chamber in a spiral shape, wherein the cooling tube (11) comprises an air inlet tube (11.1) and an air outlet tube (11.2), the silencing chamber (10) is provided with an outlet for the air inlet tube (11.1) and the air outlet tube (11.2) to pass through, and the air inlet tube (11.1) and the air outlet tube (11.2) of the cooling tube (11) respectively pass through the outlet on the silencing chamber (10) to be connected with the compressor (5) and the molecular sieve (4).

9. Oxygenerator according to claim 8, characterized in that said casing (14) is provided with a compressor inlet (2.1) and a heat-dissipating system inlet (2.2), said compressor inlet (2.1) being in communication with the compressor (5) through a pipe; the air inlet (2.2) of the heat radiation system is communicated with the fan (9) through the silencing chamber (10).

10. Oxygenerator according to claim 9, characterized in that a damping plate (7) for mounting the compressor (5) is provided in the casing (14), and that an air outlet (7.1) communicating with the air inlet (6.1) is provided in the damping plate (7).