CN114530139A

CN114530139A - Sound insulation outer cover and oxygen generator

Info

Publication number: CN114530139A
Application number: CN202210290012.7A
Authority: CN
Inventors: 刘许光; 丁文; 崔蕴杰; 陶艳丽
Original assignee: Foshan Yiaojia Technology Co ltd
Current assignee: Foshan Yiaojia Technology Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-05-24
Anticipated expiration: 2042-03-23
Also published as: CN114530139B

Abstract

The invention discloses a sound insulation outer cover and an oxygen generator, and relates to the field of oxygen generators, wherein the oxygen generator comprises the sound insulation outer cover and an oxygen generator main body, the sound insulation outer cover comprises an outer cover main body, the bottom of the outer cover main body is open, and the side wall of the outer cover main body is provided with an air inlet, an air outlet and an oxygen outlet; a first inner cavity and a second inner cavity are arranged in the outer cover main body, a partition plate is vertically arranged between the first inner cavity and the second inner cavity, the air inlet is communicated with the first inner cavity, and the air outlet is communicated with the second inner cavity; the partition plate is provided with an accommodating gap, and the bottom of the accommodating gap extends to the bottom of the partition plate. When in use, the outer cover main body can be directly arranged on the outer side of the existing oxygenerator, so that the partition plate is arranged between the nitrogen outlet and the air inlet of the oxygenerator, and the outer cover main body can play a role in sound insulation, thereby being beneficial to the treatment of the source of low-frequency noise; through setting up the division board, prevent that the nitrogen gas export was discharged from flowing back to air inlet department, air inlet department oxygen concentration is higher, and system oxygen efficiency is higher.

Description

Sound insulation outer cover and oxygen generator

Technical Field

The invention relates to the technical field of sound insulation and noise reduction, in particular to a sound insulation outer cover and an oxygen generator.

Background

Many devices in daily work and life can emit low-frequency noise, and influence daily work and rest of people. The oxygen generator is one of the sources of low-frequency noise; the oxygen generator is a machine for preparing oxygen, adopts the adsorption performance of a molecular sieve, takes a compressor as power through a physical principle, separates nitrogen from oxygen in air to finally obtain high-concentration oxygen, and is widely applied to factories, hospitals, hotels and houses. In order to reduce the outside noise that spreads of oxygenerator, need add a sound insulation dustcoat, however, according to the system oxygen principle of oxygenerator, the oxygenerator need set up the oxygen exit tube except, still need set up air intlet and nitrogen gas export, current sound insulation dustcoat when using, nitrogen gas that nitrogen gas export exhaust can be retained in the dustcoat that gives sound insulation, then flow back to air intlet department, lead to air intlet department oxygen concentration lower, system oxygen efficiency is lower.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a sound insulation outer cover and an oxygen generator.

The soundproof cover according to the embodiment of the first aspect of the present invention includes a cover main body, a bottom of which is open, and a side wall of which is provided with an air inlet, an air outlet, and an oxygen outlet; a first inner cavity and a second inner cavity are arranged in the outer cover main body, a partition plate is vertically arranged between the first inner cavity and the second inner cavity, the air inlet is communicated with the first inner cavity, and the air outlet is communicated with the second inner cavity; the partition plate is provided with an accommodating notch, and the bottom of the accommodating notch extends to the bottom of the partition plate.

The soundproof cover according to the embodiment of the first aspect of the invention has at least the following technical effects: when the oxygen generator is used, the outer cover main body can be directly additionally arranged on the outer side of the existing oxygen generator, the partition plate is arranged between the nitrogen outlet and the air inlet of the oxygen generator, the outer cover main body can play a role in sound insulation, the structure of the oxygen generator is not required to be changed, the oxygen generator is convenient to popularize and apply, and the low-frequency noise source can be favorably treated; through setting up the space bar, the exhaust nitrogen gas of nitrogen gas outlet is prevented from flowing back to air inlet department, and the exhaust nitrogen gas of nitrogen gas outlet can be discharged the external world from the gas vent, and fresh air gets into first inner chamber then gets into air inlet from the air inlet, and air inlet department oxygen concentration is higher, and the system oxygen efficiency is higher.

According to some embodiments of the invention, the spacer plate is a flexible member. Therefore, the edge of the accommodating notch can be better close to the oxygen generator, and the gas flow between the first inner cavity and the second inner cavity is better prevented.

According to other embodiments of the invention, a first box body is arranged at the top of the outer cover main body, a communicating cavity is arranged in the first box body, an impeller is arranged in the communicating cavity, the axial direction of the impeller is vertical, the impeller is provided with a plurality of blades, and the blades are arranged vertically; the first box body is provided with a first air vent and a fourth air vent, the bottom of the first box body is provided with the air inlet and the air outlet, and the first air vent, the air inlet, the air outlet and the fourth air vent are sequentially arranged along the circumferential direction of the impeller; the first air vent with the radian size that the air inlet is separated from is called first radian, the air inlet with the radian size that the gas vent is separated from is called second radian, the gas vent with the radian size that the fourth air vent is separated from is called third radian, first radian with the third radian all is less than the second radian. By arranging the first box body and the impeller, when the self-rotating impeller is used, the first radian and the third radian are smaller than the second radian, the impeller can rotate spontaneously, the rotating direction is from the first air vent to the air inlet, the external air is not directly communicated with the first inner cavity, the external air enters the communicating cavity from the first air vent and needs to flow to the first inner cavity through the impeller, and the blades on the impeller can block noise; the gas between the exhaust port and the fourth gas port flows, and the gas in the second inner cavity enters the communicating cavity from the exhaust port, needs to pass through the impeller and then is exhausted from the fourth gas port.

According to some embodiments of the invention, the impeller is provided with a hub, the hub being provided with an outer ring portion, the blades being provided at an outer periphery of the outer ring portion; a first connecting cylinder is arranged on the upper side of the outer ring part, the blades are arranged between the first connecting cylinder and the outer wall of the communicating cavity, and the outer ring part is connected with the top wall of the communicating cavity in a sliding and sealing mode through the first connecting cylinder; the lower side of the outer ring portion is provided with a second connecting cylinder, the blades are arranged between the second connecting cylinder and the outer wall of the communicating cavity, and the outer ring portion is connected with the bottom wall of the communicating cavity in a sliding and sealing mode through the second connecting cylinder. Through setting up first connecting cylinder and second connecting cylinder, prevent that the gas in the intercommunication intracavity from flowing along the radial of impeller, make the gas in the intercommunication intracavity flow along the circumference of impeller.

According to some embodiments of the present invention, the first connecting cylinder is disposed on a top wall of the first box, a first groove is disposed on an upper side of the outer ring portion, the first groove extends in a ring shape along a circumferential direction of the outer ring portion, a bottom of the first connecting cylinder is disposed in the first groove, and an oil seal structure is disposed in the first groove. The friction between the outer ring part and the first connecting cylinder is small while sealing is achieved, and the first connecting cylinder has small obstruction to the rotation of the impeller.

According to some embodiments of the present invention, the second connecting cylinder is disposed at the outer ring portion, a bottom wall of the communicating cavity is provided with a second groove, the second groove extends annularly along a circumferential direction of the outer ring portion, a bottom of the second connecting cylinder is disposed in the second groove, and an oil seal structure is disposed in the second groove. When sealing is realized, the friction force between the outer ring part and the bottom wall of the communicating cavity is small, and the obstruction of the bottom wall of the communicating cavity to the rotation of the impeller is small.

According to some embodiments of the invention, the arc size separating two adjacent blades is called a fourth arc; the first radian and the third radian are both greater than the fourth radian and less than twice the fourth radian. Like this along with the rotation of impeller, be equipped with one or two blades between first blow vent and the air inlet all the time, prevent that first blow vent and air inlet from directly communicating, also prevent to be equipped with too much blade between first blow vent and the air inlet and lead to the air current resistance too big.

According to some embodiments of the invention, the first box body comprises a main body part and a top cover, the main body part is fixedly connected with the outer cover main body, and the main body part is detachably connected with the top cover. The top cover is disassembled to disassemble and assemble the impeller, so that the impeller can be conveniently checked and maintained.

According to some embodiments of the invention, the impeller is provided with a first rotating shaft, the impeller is connected with the first box body through the first rotating shaft, and the impeller rotates coaxially with the first rotating shaft; the first rotating shaft penetrates through the bottom wall of the first box body and extends into the outer cover main body, and a motor used for driving the first rotating shaft is arranged in the outer cover main body. Therefore, the rotation of the impeller can be accelerated, the gas flow of the first air port flowing to the air inlet is increased, and the gas flow of the exhaust port flowing to the fourth air port is increased.

According to the second aspect of the embodiment of the invention, the oxygen generator comprises an oxygen generator main body and the sound insulation outer cover, wherein the oxygen generator main body is provided with an air inlet, a nitrogen outlet and an oxygen outlet pipe, the oxygen generator main body is arranged in the accommodating notch, the air inlet is arranged in the first inner cavity, the nitrogen outlet is arranged in the second inner cavity, and the oxygen outlet pipe penetrates through the oxygen outlet.

The oxygen generator according to the embodiment of the second aspect of the invention has at least the following technical effects: through setting up foretell syllable-dividing dustcoat, air inlet department oxygen concentration is higher when reaching the effect that gives sound insulation, and system oxygen efficiency is higher.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a front cross-sectional schematic view of an acoustical enclosure according to some embodiments of the present invention;

FIG. 2 is a schematic perspective view of an acoustical enclosure according to some embodiments of the present invention;

FIG. 3 is an exploded view of a sound insulating enclosure according to some embodiments of the present invention;

FIG. 4 is a front cross-sectional view of FIG. 2;

FIG. 5 is a schematic cross-sectional left view of FIG. 2;

FIG. 6 is an enlarged schematic view of area A of FIG. 4;

FIG. 7 is an enlarged schematic view of region B of FIG. 5;

fig. 8 is a cross-sectional schematic view of the blade of fig. 3.

In the drawings:

100-oxygenerator body; 110-air inlet; 120-nitrogen outlet; 130-an oxygen outlet pipe; 200-a housing body; 210-a first lumen; 211-gas inlet; 220-a second lumen; 222-an exhaust port; 230-a sealing door; 231-convex edge; 232-sealing strip; 240-a base; 241-a sealing ring; 242-a gasket; 300-a spacer plate; 310-an extension; 400-a body portion; 401 — a first vent; 404-a fourth vent; 410-a top cover; 411 — first connecting cylinder; 510-a blade; 511-a first blind hole; 512-second blind hole; 520-a hub; 521-a first groove; 522-a second connector barrel; 523-second groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "a" or "an" mean one or more, the terms "a" or "an" mean two or more, the terms larger than, smaller than, exceeding, and the like are understood to include the number, and the terms "larger than, smaller than, within, and the like are understood to include the number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

A soundproof cover and an oxygen generator according to an embodiment of the present invention will be described with reference to fig. 1 to 8.

The soundproof cover according to the embodiment of the first aspect of the present invention includes a cover main body 200, a bottom of the cover main body 200 is opened, and a side wall of the cover main body 200 is provided with an air inlet 211, an air outlet 222, and an oxygen outlet; a first inner cavity 210 and a second inner cavity 220 are arranged in the outer cover main body 200, a partition plate 300 which is vertically arranged is arranged between the first inner cavity 210 and the second inner cavity 220, an air inlet 211 is communicated with the first inner cavity 210, and an air outlet 222 is communicated with the second inner cavity 220; the partition board 300 is provided with a receiving gap, and the bottom of the receiving gap extends to the bottom of the partition board 300.

For example, as shown in fig. 1, the first inner cavity 210 is disposed at the right side of the second inner cavity 220, the air inlet 211 is disposed at the right side wall of the housing main body 200, the air outlet 222 is disposed at the left side wall of the housing main body 200, the oxygen outlet is disposed at the front side wall of the housing main body 200, the partition 300 is in an inverted U shape, and the opening of the U shape is an accommodation gap.

When in use, the outer cover main body 200 can be directly arranged on the outer side of the existing oxygenerator, the partition plate 300 is arranged between the nitrogen outlet 120 and the air inlet 110 of the oxygenerator, the outer cover main body 200 can play a role of sound insulation, the structure of the oxygenerator is not required to be changed, and the popularization and the application are convenient; through setting up the division board 300, prevent that the nitrogen gas that nitrogen gas outlet 120 discharged from flowing back to air inlet 110 department, nitrogen gas that nitrogen gas outlet 120 discharged can be discharged to the external world from gas vent 222, and fresh air gets into first inner chamber 210 and then gets into air inlet 110 from air inlet 211, and air inlet 110 department oxygen concentration is higher, and it is efficient to make oxygen.

In some embodiments of the present invention, the spacer plate 300 is a flexible member. The partition plate 300 is a rubber component, and the accommodating gap of the partition plate 300 can be cut according to the shape of the oxygen generator during field installation, so that the edge of the accommodating gap can be close to the oxygen generator; by arranging the partition plate 300 as a flexible member, the edge of the accommodating gap can be better close to the oxygen generator, so that the gas flow between the first inner cavity 210 and the second inner cavity 220 can be better prevented; in addition, the spacer plate 300 can set up in the edge of holding breach and be curved extension 310, extension 310 from spacer plate 300 arc extend to left with the oxygenerator butt, like this because second inner chamber 220 department is the malleation, first inner chamber 210 department is the negative pressure, extension 310 has the trend that moves to the right, and then closely butts with the oxygenerator, and sealed effect is better.

In some embodiments of the present invention, the inner wall of the cover main body 200 is laminated with a sound-absorbing cotton layer. Thus, the noise reduction effect is better.

In other embodiments of the present invention, a first box is disposed on the top of the housing main body 200, a communicating cavity is disposed in the first box, an impeller is disposed in the communicating cavity, an axial direction of the impeller is vertical, the impeller is provided with a plurality of blades 510, the blades 510 are vertically disposed, and the blades 510 are air-permeable sound-absorbing material members; the first box body is provided with a first air vent 401 and a fourth air vent 404, the bottom of the first box body is provided with an air inlet 211 and an air outlet 222, and the first air vent 401, the air inlet 211, the air outlet 222 and the fourth air vent 404 are sequentially arranged along the circumferential direction of the impeller; the radian size of the distance between the first air vent 401 and the air inlet 211 is referred to as a first radian, the radian size of the distance between the air inlet 211 and the air outlet 222 is referred to as a second radian, the radian size of the distance between the air outlet 222 and the fourth air outlet 404 is referred to as a third radian, and the first radian and the third radian are both smaller than the second radian. Referring to fig. 2 and 3, the bottom wall of the first case and the top wall of the housing main body 200 may be the same member, the air inlet 211 and the air outlet 222 are both disposed on the bottom wall of the first case, the first air vent 401 and the fourth air vent 404 are both disposed on the top wall of the first case, the first air vent 401 is disposed on the front right side of the first case, the air inlet 211 is disposed on the rear right side of the first case, the air outlet 222 is disposed on the rear left side of the first case, and the fourth air vent 404 is disposed on the front left side of the first case. In use, it is found that since the first inner chamber 210 is directly communicated to the outside through the air inlet 211 and the second inner chamber 220 is directly communicated to the outside through the air outlet 222, noise generated by the oxygen generator can be easily transmitted to the outside through the air inlet 211 and the air outlet 222, resulting in poor sound insulation effect of the housing main body 200. In the embodiment, by arranging the first box body and the impeller, when the impeller is used, because the first radian and the third radian are set to be smaller than the second radian, the impeller can rotate spontaneously, the rotation direction is from the first air vent 401 to the air inlet 211, the external air is not directly communicated with the first inner cavity 210, the external air enters the communication cavity from the first air vent 401 and needs to flow to the first inner cavity 210 through the impeller, and the blades 510 on the impeller can block noise; the gas between the exhaust port 222 and the fourth gas port 404 flows, and the gas in the second inner cavity 220 enters the communicating cavity from the exhaust port 222, and needs to pass through the impeller and then be exhausted from the fourth gas port 404.

When the impeller is used, negative pressure is formed in the first inner cavity 210, positive pressure is formed in the second inner cavity 220, ideal state sealing cannot be kept between the impeller and the cavity wall of the communicating cavity, air flows through the communicating cavity to the air inlet 211 at the first air port 401, the air flow is called as first air flow, first torque is applied to the impeller by the first air flow, air flows through the communicating cavity to the air inlet 211 at the air outlet 222, the air flow is called as second air flow, second torque is applied to the impeller by the second air flow, air flows through the communicating cavity to the fourth air port 404 at the air outlet 222, the air flow is called as third air flow, third torque is applied to the impeller by the third air flow, the directions of the first torque and the third torque are the same, and the directions of the first torque and the second torque are opposite; by setting the first radian and the third radian to be smaller than the second radian, the flow distance of the first airflow and the third airflow is shorter, the flow resistance is smaller, the flow velocity is larger, the force applied to the blade 510 is larger, the flow distance of the second airflow is longer, the flow resistance is larger, the flow velocity is smaller, the force applied to the blade 510 is smaller, the sum of the first torque and the third torque is larger than the second torque, the impeller can rotate spontaneously, and the rotation direction is from the first air vent 401 to the air inlet 211;

in some embodiments of the present invention, referring to fig. 8, the surface of the blade 510 is provided with a sound absorbing structure, the sound absorbing structure includes a first hole assembly and a second hole assembly, the first hole assembly includes a plurality of first blind holes 511, the second hole assembly includes a plurality of second blind holes 512, the plurality of first blind holes 511 and the plurality of second blind holes 512 are respectively disposed at two sides of the blade 510, the diameter of the first blind holes 511 decreases gradually from the surface of the blade 510 to the inside of the blade 510, the diameter of the second blind holes 512 decreases gradually from the surface of the blade 510 to the inside of the blade 510, the first blind holes 511 and the second blind holes 512 are arranged in a staggered manner, and the sum of the depth of the second blind holes 512 and the depth of the second blind holes 512 is greater than the thickness of the blade 510. The first blind hole 511 and the second blind hole 512 are arranged to absorb noise transmitted into the impeller; the diameters of the first blind hole 511 and the second blind hole 512 are gradually reduced from the surface of the blade 510 to the inner side of the blade 510, so that the surface areas of the first blind hole 511 and the second blind hole 512 are larger, and more noise can be absorbed; the first blind hole 511 and the second blind hole 512 are arranged in a staggered manner, and the sum of the depth of the second blind hole 512 and the depth of the second blind hole 512 is greater than the thickness of the blade 510, so that the first blind hole 511 and the second blind hole 512 cannot be communicated with each other, the thickness of the blade 510 can be fully utilized, the depth of the first blind hole 511 and the depth of the second blind hole 512 are greater, and the sound absorption effect is better.

In some embodiments of the present invention, the impeller is provided with a hub 520, the hub 520 is provided with an outer ring portion, and the blades 510 are provided at the outer periphery of the outer ring portion; a first connecting cylinder 411 is arranged on the upper side of the outer ring part, the blades 510 are arranged between the first connecting cylinder 411 and the outer wall of the communicating cavity, and the outer ring part is connected with the top wall of the communicating cavity in a sliding and sealing mode through the first connecting cylinder 411; the downside of outer loop portion is equipped with second connecting cylinder 522, and blade 510 is located between the outer wall of second connecting cylinder 522 and intercommunication chamber, and outer loop portion passes through second connecting cylinder 522 and communicates the diapire sliding seal in chamber and is connected. The upper edge of the blade 510 is close to the top wall of the communication cavity, the lower edge of the blade 510 is close to the bottom wall of the communication cavity, the outer edge of the blade 510 is close to the outer side cavity wall of the communication cavity, and the inner edge of the blade 510 is close to the first connecting cylinder 411 and the second connecting cylinder 522; by providing the first connecting cylinder 411 and the second connecting cylinder 522, the gas in the communication chamber is prevented from flowing in the radial direction of the impeller, and the gas in the communication chamber is made to flow in the circumferential direction of the impeller.

In some embodiments of the present invention, the first connecting cylinder 411 is disposed on the top wall of the first box, the upper side of the outer ring portion is provided with a first groove 521, the first groove 521 extends annularly along the circumference of the outer ring portion, the bottom of the first connecting cylinder 411 is disposed in the first groove 521, and an oil seal structure is disposed in the first groove 521. Referring to fig. 6, the first connecting cylinder 411 is an integral member with the top wall of the first casing; by arranging that the bottom of the first connecting cylinder 411 is inserted into the first groove 521, the oil seal structure can be sealing oil, so that force transmission between the first connecting cylinder 411 and the first groove 521 is not needed, the friction between the outer ring part and the first connecting cylinder 411 is small, and the first connecting cylinder 411 has small obstruction to the rotation of the impeller; in addition, the depth of the first groove 521 can be set to be larger, after the first connecting cylinder 411 is inserted into the first groove 521, the gap between the first connecting cylinder 411 and the first groove 521 is in a U shape, even if the impeller rotates, the sealing oil can form a pressure difference between the inner side and the outer side of the first connecting cylinder 411, and the sealing oil is prevented from being thrown out.

In some embodiments of the present invention, the second connecting cylinder 522 is disposed on the outer ring portion, the bottom wall of the communication cavity is provided with a second groove 523, the second groove 523 extends in a ring shape along the circumferential direction of the outer ring portion, the bottom of the second connecting cylinder 522 is disposed in the second groove 523, and an oil seal structure is disposed in the second groove 523. Referring to fig. 6, the second connecting cylinder 522 is an integral member with the outer ring portion; by arranging that the bottom of the second connecting cylinder 522 is inserted into the second groove 523, the oil seal structure can be sealing oil, so that no force transmission is required between the second connecting cylinder 522 and the second groove 523, the friction force between the outer ring part and the bottom wall of the communicating cavity is small, and the obstruction of the bottom wall of the communicating cavity to the rotation of the impeller is small; in addition, the depth of the second groove 523 can be set to be larger, and after the second connecting cylinder 522 is inserted into the second groove 523, the gap between the second connecting cylinder 522 and the second groove 523 is in a U shape, so that even if the impeller rotates and the sealing oil can form a pressure difference between the inner side and the outer side of the second connecting cylinder 522, the sealing oil is prevented from being thrown out.

In some embodiments of the present invention, the arc size separating two adjacent blades 510 is referred to as a fourth arc; the first radian and the third radian are both greater than the fourth radian and less than twice the fourth radian. Thus, one or two blades 510 are always arranged between the first air vent 401 and the air inlet 211 along with the rotation of the impeller, so that the first air vent 401 is prevented from being directly communicated with the air inlet 211, and the air flow resistance caused by too many blades 510 arranged between the first air vent 401 and the air inlet 211 is also prevented from being too large.

In some embodiments of the present invention, the first box comprises a main body 400 and a top cover 410, the main body 400 is fixedly connected to the housing main body 200, and the main body 400 is detachably connected to the top cover 410. Referring to fig. 4 and 5, the main body 400 and the housing main body 200 are an integral component, the top of the main body 400 is open, the top cover 410 is disposed on the top of the main body 400, and the edge of the top cover 410 is connected with the edge of the main body 400 through bolts, but the top cover 410 and the main body 400 may also be detachably connected through clamping or other suitable methods; the first vent 401 and the fourth vent 404 are provided in the top cover 410, but the first vent 401 and the fourth vent 404 may be provided in the main body 400; thus, the impeller can be disassembled and assembled by disassembling the top cover 410, and the inspection and maintenance of the impeller are convenient.

In some embodiments of the present invention, the impeller is provided with a first rotating shaft, the impeller is connected to the first casing through the first rotating shaft, and the impeller rotates coaxially with the first rotating shaft; the first rotating shaft penetrates through the bottom wall of the first box body and extends into the housing main body 200, and a motor for driving the first rotating shaft is arranged in the housing main body 200. The first rotating shaft is fixedly connected with the impeller, a driving shaft of the motor is linked with the first rotating shaft in a belt wheel and belt mode, and a power line of the motor can be led out from a power line of the oxygen generator during installation; thus, the rotation of the impeller can be accelerated, the gas flow rate of the first vent 401 flowing to the gas inlet 211 is increased, and the gas flow rate of the gas outlet 222 flowing to the fourth vent 404 is increased; in addition, still can set up first blow vent 401 and gas vent 222 and comparatively be close to first pivot in footpath, first pivot is comparatively kept away from in footpath to gas inlet 211 and fourth blow vent 404, along with the rotation of impeller like this, the gaseous trend of keeping away from first pivot that communicates the intracavity under the effect of centrifugal force has, the impeller plays the effect similar to centrifugal fan, be favorable to first blow vent 401 from external suction air, be favorable to gas vent 222 from second inner chamber 220 suction air, be favorable to gas inlet 211 to send out the air to first inner chamber 210, be favorable to fourth blow vent 404 to send out gas to the external world.

The oxygen generator according to the second aspect of the embodiment of the present invention comprises an oxygen generator main body 100 and the sound insulation outer cover, the oxygen generator main body 100 is provided with an air inlet 110, a nitrogen outlet 120 and an oxygen outlet pipe 130, the oxygen generator main body 100 is arranged in the accommodating notch, the air inlet 110 is arranged in the first inner cavity 210, the nitrogen outlet 120 is arranged in the second inner cavity 220, and the oxygen outlet pipe 130 penetrates through the oxygen outlet. The oxygen outlet pipe 130 is provided in the second chamber section, and a partition plate may be provided outside the housing main body 200 at a position between the first vent port 401 and the second vent port in order to prevent the gas discharged from the fourth vent port 404 from flowing to the first vent port 401 and returning to the housing main body 200. Through setting up foretell syllable-dividing dustcoat, 110 oxygen concentration of air intlet is higher when reaching the effect that gives sound insulation, and system oxygen efficiency is higher.

In some embodiments of the present invention, the housing main body 200 is provided with a first opening, a detachable sealing door 230 is disposed in the first opening, the sealing door 230 is embedded in the first opening, a sealing strip 232 is disposed between the sealing door 230 and the first opening, the bottom of the sealing door 230 extends to the bottom of the housing main body 200, the sealing door 230 is disposed at the lower side of the oxygen outlet pipe 130, and the oxygen outlet pipe 130 is disposed at the upper edge of the sealing door 230; when the outer cover main body 200 is installed, the sealing door 230 can be detached firstly, then the outer cover main body 200 can be sleeved on the outer side of the oxygen generator from top to bottom, and then the sealing door 230 is installed; when the housing main body 200 is required to be detached, the sealing door 230 is detached; the oxygen outlet pipe 130 does not cause any obstacle during the period of dismounting the housing main body 200, the oxygen outlet pipe 130 does not need to be disconnected, and the dismounting and maintenance of the housing main body 200 can be carried out even in the using process of the oxygenerator; the sealing door 230 and the oxygen outlet pipe 130 are both arranged on the wall of the second inner cavity 220, the sealing door 230 is provided with an outer convex edge 231, the outer convex edge 231 is arranged in the second inner cavity 220, the outer convex edge 231 is abutted against the outer cover main body 200, the outer convex edge 231 can abut against the outer cover main body 200 under the action of positive pressure in the second inner cavity 220 to prevent falling off, the sealing door 230 can be detached by pushing the sealing door 230 from outside to inside, the structure is simple, and the disassembly and assembly are simple and easy. The housing main body 200 further includes a base 240, the base 240 is annular, the base 240 is sleeved outside the bottom of the housing main body 200, referring to fig. 7, a sealing ring 241 is disposed inside the base 240, the sealing ring 241 is disposed between the base 240 and the bottom of the housing main body 200 to maintain the sealing between the base 240 and the housing main body 200, and the base 240 and the housing main body 200 are slidably abutted by the sealing ring 241; the base 240 can be installed on the ground through anchor bolts, and the bottom of the base 240 is provided with a sealing gasket 242 to keep the sealing between the base 240 and the ground; by providing the base 240, noise is prevented from being transmitted from the bottom of the housing main body 200, and at the same time, the housing main body 200 can be directly taken out upward after the sealing door 230 is removed.

While the preferred embodiments of the present invention have been described in detail, it should be understood that the invention is not limited to those precise embodiments, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the invention as defined in the appended claims.

Claims

1. A sound insulating enclosure, comprising: the oxygen supply device comprises a housing main body, wherein the bottom of the housing main body is open, and the side wall of the housing main body is provided with an air inlet, an air outlet and an oxygen outlet; a first inner cavity and a second inner cavity are arranged in the outer cover main body, a partition plate is vertically arranged between the first inner cavity and the second inner cavity, the air inlet is communicated with the first inner cavity, and the air outlet is communicated with the second inner cavity; the space bar is provided with an accommodating gap, and the bottom of the accommodating gap extends to the bottom of the space bar.

2. The acoustical enclosure of claim 1 wherein: the spacing plate is a flexible member.

3. The acoustical enclosure of claim 1 wherein: the top of the outer cover main body is provided with a first box body, a communicating cavity is arranged in the first box body, an impeller is arranged in the communicating cavity, the axial direction of the impeller is vertical, the impeller is provided with a plurality of blades, and the blades are vertically arranged; the first box body is provided with a first air vent and a fourth air vent, the bottom of the first box body is provided with the air inlet and the air outlet, and the first air vent, the air inlet, the air outlet and the fourth air vent are sequentially arranged along the circumferential direction of the impeller; the first air vent with the radian size that the air inlet is separated from is called first radian, the air inlet with the radian size that the gas vent is separated from is called second radian, the gas vent with the radian size that the fourth air vent is separated from is called third radian, first radian with the third radian all is less than the second radian.

4. The acoustical enclosure of claim 3 wherein: the impeller is provided with a hub, the hub is provided with an outer ring part, and the blades are arranged on the periphery of the outer ring part; a first connecting cylinder is arranged on the upper side of the outer ring part, the blades are arranged between the first connecting cylinder and the outer wall of the communicating cavity, and the outer ring part is connected with the top wall of the communicating cavity in a sliding and sealing mode through the first connecting cylinder; the lower side of the outer ring portion is provided with a second connecting cylinder, the blades are arranged between the second connecting cylinder and the outer wall of the communicating cavity, and the outer ring portion is connected with the bottom wall of the communicating cavity in a sliding and sealing mode through the second connecting cylinder.

5. The acoustical enclosure of claim 4 wherein: the first connecting cylinder is arranged on the top wall of the first box body, a first groove is formed in the upper side of the outer ring portion, the first groove extends annularly along the circumferential direction of the outer ring portion, the bottom of the first connecting cylinder is arranged in the first groove, and an oil seal structure is arranged in the first groove.

6. The acoustical enclosure of claim 4 wherein: the second connecting cylinder is arranged on the outer ring portion, a second groove is formed in the bottom wall of the communicating cavity, the second groove extends annularly along the circumferential direction of the outer ring portion, the bottom of the second connecting cylinder is arranged in the second groove, and an oil seal structure is arranged in the second groove.

7. The acoustical enclosure of claim 3 wherein: the radian of the interval between two adjacent blades is called as a fourth radian; the first radian and the third radian are both greater than the fourth radian and less than twice the fourth radian.

8. The acoustical enclosure of claim 3 wherein: the first box body comprises a main body part and a top cover, the main body part is fixedly connected with the outer cover main body, and the main body part is detachably connected with the top cover.

9. The acoustical enclosure of claim 3 wherein: the impeller is provided with a first rotating shaft, the impeller is connected with the first box body through the first rotating shaft, and the impeller and the first rotating shaft rotate coaxially; the first rotating shaft penetrates through the bottom wall of the first box body and extends into the outer cover main body, and a motor used for driving the first rotating shaft is arranged in the outer cover main body.

10. An oxygen generator, characterized in that: the sound insulation outer cover comprises an oxygen generator body and the sound insulation outer cover as claimed in any one of claims 1 to 9, wherein the oxygen generator body is provided with an air inlet, a nitrogen outlet and an oxygen outlet pipe, the oxygen generator body is arranged in the accommodating notch, the air inlet is arranged in the first inner cavity, the nitrogen outlet is arranged in the second inner cavity, and the oxygen outlet pipe penetrates through the oxygen outlet.