CN211393850U - Amortization type oxygenerator with electronic flow meter - Google Patents

Abstract

The utility model relates to a silencing type oxygenerator with electronic flowmeter, including the casing and the cabinet cover that locates in the casing, be equipped with the compressor assembly in the cabinet cover, be equipped with the amortization cotton between the base of cabinet cover and casing, be equipped with the space layer between cabinet cover and the casing; a silencing bottle, a main board controller, an oxygen concentration sensor, an electromagnetic valve, an air source pipe joint, an electronic flowmeter and a bacteria filter are arranged above the cabinet cover, the silencing bottle, the main board controller, the oxygen concentration sensor and the electromagnetic valve are sequentially arranged from back to front, and the air source pipe joint is arranged on the right side of the main board controller; the electronic flowmeter is arranged on the right side of the electromagnetic valve; the bacteria filter is arranged above the electronic flowmeter. The utility model discloses an during the adjustment of electron flowmeter, can make electron flowmeter's reverse clearance be zero earlier, then adjust to required flow again. Therefore, the flow rate adjustment can be made accurate. Meanwhile, the volume is small, and the noise is low when the oxygen generator generates oxygen.

Description

Amortization type oxygenerator with electronic flow meter

Technical Field

The utility model belongs to the technical field of the oxygenerator, specific theory is about a amortization type oxygenerator with electronic flow meter.

Background

The existing oxygen generator utilizes molecular sieve physical adsorption and desorption technology, two molecular sieve tanks are arranged in the oxygen generator, nitrogen in air can be adsorbed when in pressurization, and the rest oxygen which is not adsorbed enters an oxygen storage tank through the molecular sieve tanks and then is purified to obtain high-purity oxygen. When the molecular sieve tank is pressurized, nitrogen is adsorbed by molecules in the molecular sieve tank, oxygen flows upwards and is collected, the other molecular sieve tank is depressurized, the nitrogen adsorbed by the first molecular sieve tank and the second molecular sieve tank is pressed downwards and is discharged into the ambient air, and the whole process is a periodic cycle process. However, the existing oxygen generator with a molecular sieve tank has the following problems:

1. the two molecular sieve tanks are usually connected with an oxygen storage tank through a pipeline, and the oxygen storage tank is connected with a pressure reducing valve and the like through a pipeline. The pipeline is easy to age, so that the service life of the finished product is influenced, and the pipeline connection mode is adopted, so that the occupied space is large, and the volume of the finished product is increased. Meanwhile, the problems of complex structure and difficult installation exist due to more parts. In addition, the layout of parts in the machine is dispersed, the volume of the machine is increased, and the machine is large in volume, large in occupied space and not beneficial to storage and transportation.

2. The noise is usually about 50dB, and when the patient is placed indoors at night, the noise can cause dysphoria, affect sleep and seriously affect the oxygen therapy effect. Therefore, reducing the noise of the oxygen generator is an urgent need to improve the product quality and enhance the market competitiveness.

3. The oxygen flow adjusting mode is mainly adjusted by a flow adjusting knob. During the use, the user can carry out manual regulation as required, can let the user audio-visual understanding oxygen flow in service behavior through the scale on the flowmeter simultaneously. However, since the adjustment is completely mechanical, it is difficult to precisely adjust. Moreover, after the oxygenerator was started a period, the temperature of oxygenerator rose gradually, and the air in the oxygenerator generates heat, and gas expansion, pressure grow for the flow risees, and then leads to the accuracy of flow to reduce. Therefore, the flow rate is controlled by using the existing flow meter, and the accuracy is low.

4. And part of the oxygen generators adopt an electronic flowmeter to regulate the oxygen flow. However, in the existing electronic flowmeter, a stepping motor is generally adopted to control the mechanical transmission of the flowmeter. For mechanical systems that employ male and female threads for thread engagement, there is a reverse clearance. Due to the existence of the reverse clearance, when the reverse movement of the male thread and the female thread starts, the accumulated error is increased continuously, and after the reverse clearance is completely compensated, the accumulated error gradually tends to fluctuate smoothly. From the return situation of the forward and reverse directions, the influence of the reverse gap is considerable due to the commutation process from the forward direction to the reverse direction or from the reverse direction to the forward direction. I.e., one for each forward or reverse movement, there is a specific reverse gap error. This error can be obtained by measurement. Before use, the error of single unidirectional movement can be removed through programming, and the result of each forward/reverse movement is ensured to be accurate.

However, in practical applications, a problem often occurs in that, during the adjustment of the movement of the male thread and the female thread, only the forward movement is required to be performed to the first position, then the forward movement is continued to the second position, then the forward movement is continued to the third position, and the latter only needs to be performed to a certain position in the reverse movement, and then the reverse movement is continued to another position, so that the reverse clearance cannot be eliminated, and the accumulated error is larger and larger, thereby causing inaccurate results. Namely, when the mechanical transmission mode of the flowmeter adopts the mode of matching the female thread and the male thread for transmission, the electronic flowmeter can carry out speed regulation and positioning on the flowmeter when receiving an instruction; when the continuous received commands of the electronic flowmeter are pulse signals in the same direction, the reverse clearance error of the mechanical transmission of the electronic flowmeter is larger and larger, so that the flow is inaccurate.

5. The gas separation device for the oxygen generator mainly comprises an electromagnetic separation valve, a pneumatic valve driven by the electromagnetic valve, a ceramic core rotary separation valve and the like; although the materials of the electromagnetic separating valve and the electromagnetic driving pneumatic valve are easy to obtain, the electromagnetic separating valve and the electromagnetic driving pneumatic valve have the defects of higher cost, larger driving air pressure, additional driving circuit and the like. The ceramic core rotary separating valve overcomes the defects of an electromagnetic separating valve and an electromagnetic driving pneumatic valve to a great extent, but because a movable valve core and a fixed valve core are made of ceramic, the movable valve core and the fixed valve core can generate violent sound after being circularly rotated and rubbed for a long time; in addition, because the friction coefficient of the ceramic is large, severe friction can be caused between the contact surfaces of the movable valve core and the fixed valve core if the contact surfaces are not smooth, so that the seizure phenomenon is generated, and the service life is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a amortization type oxygenerator with electronic flow meter to be used for solving following problem: (1) the existing oxygenerator has large noise; (2) the flow meter is inconvenient to adjust and has low accuracy; (3) the problems of dispersed arrangement of parts in the prior oxygenerator and large volume of finished products are solved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a silencing type oxygenerator with an electronic flowmeter comprises a shell, wherein the shell comprises a front shell panel, a rear shell panel, a top plate and a base, a case cover is arranged between the front shell panel and the rear shell panel, an integrated molecular sieve assembly is arranged in front of the case cover, a humidifying bottle accommodating cavity is arranged in front of the integrated molecular sieve assembly,

the machine box cover is arranged above the base, silencing cotton is arranged between the machine box cover and the base, a gap layer is arranged between the machine box cover and the rear shell panel and used for eliminating noise generated in the working process of the compressor, a silencing material layer is arranged on the inner surface and/or the outer surface of the machine box cover and is prepared from one of sound absorption cotton, slag cotton, wave crest sponge or foaming adhesive;

the compressor assembly is arranged in the case cover and also comprises a shock absorber arranged below the compressor, the shock absorber is fixed on the base of the shell, noise and vibration are reduced through the shock absorber, and the service life of the equipment is prolonged;

the integrated molecular sieve assembly is slightly higher than the case cover, a silencing bottle, a main board controller, an oxygen concentration sensor, an electromagnetic valve, an air source pipe joint, an electronic flowmeter and a bacteria filter are arranged above the case cover, the silencing bottle, the main board controller, the oxygen concentration sensor and the electromagnetic valve are sequentially arranged from back to front, and the air source pipe joint is arranged on the right side of the main board controller; the electronic flowmeter is arranged on the right side of the electromagnetic valve; a bacteria filter is arranged above the electronic flowmeter;

a double joint is arranged above the integrated molecular sieve assembly, and is respectively connected with the atomizing pipe and the oxygen pipe and is respectively used for discharging mist or oxygen; the arrangement mode reasonably utilizes the space between the case cover and the top plate, so that the structure of a finished product is compact, and the volume of the finished product is greatly reduced;

the electronic flowmeter comprises an air inlet and outlet column, a flow regulating valve, a stepping motor for driving the flow regulating valve to rotate, a motor support and a control panel, wherein the air inlet and outlet column comprises an air inlet column, an air outlet column and a regulating valve accommodating cavity;

the flow regulating valve is arranged in the regulating valve accommodating cavity and is in threaded fit connection with the regulating valve accommodating cavity; the front end of the flow regulating valve is provided with a conical needle, and the rear end of the flow regulating valve is matched with a rotor of the stepping motor; the flow regulating valve is provided with a sealing ring, and the sealing ring is matched with the regulating valve accommodating cavity; when the flow control valve is used, the flow aperture of oxygen is adjusted through the rotation of the rotor of the stepping motor, and when the flow control valve rotates forwards or backwards, the conical needle and the gas inlet column or the gas outlet column of the gas inlet column and the gas outlet column form gas flow spaces with different sizes, so that different flow control is realized; the motor support comprises a bottom plate, a baffle is arranged on the bottom plate, a limiting part is arranged on the side wall of the rear end of the flow regulating valve, when the limiting part rotates to the baffle, the flow regulating valve can be limited to continue to rotate towards the same direction, the conical needle of the flow regulating valve is completely inserted into the air inlet column/the air outlet column at the moment, a through hole is formed in the middle of the bottom plate, and the through hole is communicated with the regulating valve accommodating cavity of the air inlet column and the air outlet column. When the flow is regulated at every time, the limiting part of the sleeve can rotate to the position of the baffle, so that the reverse clearance returns to zero, the consistency of the error of the flow at every time is ensured, and the accuracy of the result is ensured within the operation range.

According to the utility model discloses, motor support and business turn over gas column are integrated into one piece structure.

According to the utility model, at least two mounting holes of the stepping motor and at least two mounting holes of the bottom plate are arranged on the bottom plate, and the stepping motor is fixedly connected with the mounting holes of the stepping motor on the bottom plate through two or more fixing pieces; the bottom plate is connected with an oxygen generator.

According to the utility model, a vertical plate is arranged below the bottom plate, the vertical plate and the bottom plate are integrally formed, a control panel is arranged on the vertical plate, a signal input module and a signal output module are arranged on the control panel, and the signal input module is electrically connected with the signal output module; the signal input module is respectively and electrically connected with the flow sensor and a main board controller of the oxygen generator and is used for receiving signals of the main board controller and signals received by the flow sensor; the signal output module is connected with the stepping motor and used for controlling the stepping angle of the stepping motor.

According to the utility model discloses, the cross-section that the governing valve held the chamber is the toper, and the front end is narrow, and the rear end is wide, the sealing washer holds the chamber phase-match with the governing valve.

Furthermore, the flow control valve is provided with an annular clamping groove, the sealing ring is sleeved on the annular clamping groove, the inner side of the sealing ring is embedded in the annular clamping groove, the axial sliding of the sealing ring along the flow control valve can be prevented, the structure is stable and firm, and the sealing effect is better.

According to the utility model discloses, the humidifying bottle holds the intracavity and installs the humidifying bottle, the humidifying bottle holds the front panel and the preceding shell panel in chamber on same horizontal plane, and the humidifying bottle holds and is equipped with LED backlight panel on the rear panel in chamber, and LED backlight panel and humidifying bottle hold and are equipped with the LED lamp between the rear panel in chamber.

According to the utility model discloses, integral type molecular sieve assembly includes first molecular sieve jar and second molecular sieve jar, still includes oxygen storage tank, relief pressure valve, change valve and the nitrogen discharging ware that from the top down set gradually, oxygen storage tank, relief pressure valve, change valve are located between first molecular sieve jar and the second molecular sieve jar, first molecular sieve jar, second molecular sieve jar, oxygen storage tank, relief pressure valve, change valve and nitrogen discharging ware design as an organic whole, the upper end of first molecular sieve jar, second molecular sieve jar and oxygen storage tank still is equipped with the lid, be equipped with the passageway in the lid, make the upper end of first molecular sieve jar and second molecular sieve jar communicates with each other with oxygen storage tank, the lower extreme of first molecular sieve jar and second molecular sieve jar communicates with each other with the change valve, oxygen storage tank communicates with each other with the relief pressure valve.

According to the utility model discloses, the compressor assembly includes the compressor, be equipped with three joint on the compressor, be first air inlet joint, the first joint of giving vent to anger and the second joint of giving vent to anger respectively, first air inlet joint passes through the gas outlet of silicone tube with the amortization bottle and links to each other, first joint and the commentaries on classics valve of giving vent to anger is connected, the second is given vent to anger and is connected through air supply output tube and air supply coupling, the air supply coupling pass through the air supply output tube with the solenoid valve is connected, the solenoid valve passes through the atomizing pipe and is connected with the double joint.

According to the utility model discloses, be equipped with axial fan on the backshell panel, axial fan locates the rear end top of compressor assembly for the compressor heat dissipation.

According to the utility model, the cover body comprises a first molecular sieve tank cover plate arranged at the left end, an oxygen storage tank cover plate arranged at the middle part and a second molecular sieve tank cover plate arranged at the right end, the first molecular sieve tank cover plate, the oxygen storage tank cover plate and the second molecular sieve tank cover plate are integrally formed, a first air inlet hole and a second air inlet hole which are communicated with the oxygen storage tank are arranged on the oxygen storage tank cover plate, the first molecular sieve tank cover plate and the second molecular sieve tank cover plate are respectively provided with a first vent hole and a second vent hole which are communicated with the first molecular sieve tank and the second molecular sieve tank, a throttling hole is arranged between the first molecular sieve tank cover plate and the second molecular sieve tank cover plate, the first vent hole and the throttling hole are communicated with the first air inlet hole, the second vent hole, the throttling hole and the second air inlet hole are communicated, and the first air inlet hole and the second air inlet hole are fixedly connected with a throttling valve respectively.

According to the utility model discloses, the diameter of first inlet port and second inlet port all is greater than the diameter of orifice to in making most gaseous entering oxygen storage tank, little part of gas gets into another molecular sieve jar by the orifice in, is used for pushing down to the rotary valve and discharges with the nitrogen gas in another molecular sieve jar.

According to the utility model discloses, the below of first molecular sieve jar and second molecular sieve jar all is equipped with a dual-purpose joint jack, the dual-purpose joint jack of first molecular sieve jar and second molecular sieve jar respectively with the first valve body outlet joint and the second valve body outlet joint sealing connection who changes the valve for discharge nitrogen gas or send into the air, when first molecular sieve jar or second molecular sieve jar are used for making oxygen, this dual-purpose joint is as the entry of changeing valve conveying air, makes oxygen when another molecular sieve jar, and this dual-purpose joint is as the discharge port of nitrogen gas.

According to the utility model discloses, oxygen storage tank includes the gas holder body, and the gas outlet and the relief pressure valve of the gas holder body are connected, the gas outlet of relief pressure valve is passed through the silicone tube and is connected with the electron flowmeter, the electron flowmeter is connected with bacterial filter's air inlet, and bacterial filter's gas outlet is passed through the silicone tube and is connected with oxygen concentration sensor's air inlet, and oxygen concentration sensor's gas outlet is passed through the silicone tube and is connected with the humidifying bottle.

According to the utility model discloses, change the valve including changeing valve body, case subassembly and locating the synchronous machine who changes valve body top, be equipped with four joints on changeing the valve body, be first valve body inlet joint, first valve body outlet joint, second valve body outlet joint and third valve body outlet joint respectively, first valve body inlet joint is connected with the compressor through the silicone tube, and the lateral part that changes the valve body is located to first valve body inlet joint, and the left and right sides that changes the valve body is located respectively to first valve body outlet joint and second valve body outlet joint, is connected with first molecular sieve jar and second molecular sieve jar respectively, and third valve body outlet joint locates changeing the below of valve body, is connected with the nitrogen discharging ware for discharge nitrogen gas.

According to the utility model discloses, four universal wheels are installed to the below of base, are convenient for remove, convenient to use.

The utility model discloses a amortization type oxygenerator with electronic flow meter, its beneficial effect is:

1. the arrangement of the noise reduction cotton of the case cover and the base, and the arrangement of the gap layer between the case cover and the rear shell panel can greatly reduce the noise of the compressor during working.

2. The setting of the bumper shock absorber of compressor can reduce the noise of compressor during operation and absorb the vibrations that the compressor during operation produced rapidly, improves the life of compressor.

3. The arrangement mode of each structural part in the oxygenerator is reasonable: the top of machine case cover is located to amortization bottle, mainboard controller, oxygen concentration sensor, solenoid valve, air supply coupling, rational utilization machine case cover and roof between the space, and the top of integral type molecular sieve device is located to the double joint, the space between rational utilization integral type molecular sieve device and the roof for off-the-shelf compact structure, thereby reduce off-the-shelf volume greatly.

4. The arrangement of the electronic flowmeter ensures that the oxygen flow of the oxygen generator is convenient to adjust and accurate; during each flow regulation, the stepping motor controls the reverse clearance of the electronic flowmeter to return to zero and then regulates the electronic flowmeter to a required position, so that the error can be greatly reduced, and the accuracy of the flow regulation is ensured.

5. The LED backlight panel is arranged on the rear panel of the accommodating cavity of the humidification bottle, and the LED lamp is arranged between the LED backlight panel and the rear panel of the accommodating cavity of the humidification bottle, so that the liquid level of the humidification bottle can be observed by naked eyes conveniently.

6. The first molecular sieve tank, the second molecular sieve tank, the oxygen storage tank, the pressure reducing valve, the rotary valve and the nitrogen discharger are designed integrally, the oxygen storage tank cover plate and the molecular sieve tank cover plates on two sides are integrally formed, and the molecular sieve cover plates on the two sides are communicated through the throttle holes, so that the pipeline connection is reduced, the installation steps are simplified, the service life of the oxygen generator is prolonged, and the structure of a finished product can be more compact, so that the volume of the finished product is greatly reduced, the occupied space of the finished product is reduced, and the manufacturing cost of the finished product is reduced; simultaneously, the setting of orifice is convenient for discharge the nitrogen gas in first molecular sieve jar and the second molecular sieve jar, and it makes oxygen effectual, efficient.

7. The compressor is provided with an air source output pipe, so that the oxygen generator has the functions of atomization and oxygen generation; in addition, the gas source output pipe is provided with an electromagnetic valve which can be opened or closed according to the requirement, and the use is convenient.

8. The gas separation device is a rotary valve. Because the rotary valve is made of ABS materials, the cost is high, and the rotary valve is made of the polytetrafluoroethylene movable valve core and matched with the ceramic fixed valve core, so that even if the rotary valve is rotated circularly for a long time, severe noise and seizure caused by severe friction can not be generated, the service life of the rotary valve is prolonged, and the service life of the whole integrated molecular sieve device is prolonged.

Drawings

Fig. 1 is a schematic partial cross-sectional view of the muffling oxygen generator with an electronic flow meter of the present invention.

Fig. 2 is a schematic structural diagram of the electronic flowmeter of the present invention.

Fig. 3 is a schematic top view of the flow control valve and the motor bracket of the present invention.

Fig. 4 is a schematic top view of a motor mount.

Fig. 5 is a schematic structural view of the motor bracket and the air inlet/outlet column.

Fig. 6 is a flow chart diagram of the control panel, the flow sensor, the main board controller and the stepping motor.

Fig. 7 is a partial cross-sectional view of an integrated molecular sieve assembly of the present invention.

Fig. 8 is a schematic structural view of the cover body of the present invention.

Fig. 9 is a schematic top view of the cover of the present invention.

Fig. 10 is a schematic structural view of the rotary valve of the present invention.

Fig. 11 is a block diagram of the motherboard controller according to the present invention.

Detailed Description

The sound-deadening type oxygen generator with the electronic flow meter of the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1, for the utility model discloses a amortization type oxygenerator with electronic flowmeter, which comprises a housin, the casing includes preceding shell panel 11, backshell panel 12, roof 13 and base 14, be equipped with case cover 15 between preceding shell panel 11 and the backshell panel 12, the place ahead of case cover 15 is equipped with integral type molecular sieve assembly 10, and the place ahead of integral type molecular sieve assembly 10 is equipped with the humidifying bottle and holds chamber 16.

A touch panel 131 and a liquid crystal display 132 are arranged above the top plate 13, and the touch panel 131, the liquid crystal display 132 and the main board controller 800 are connected.

Install humidifying bottle 17 in the humidifying bottle holds the chamber 16, humidifying bottle holds the front panel and the preceding shell panel 11 of chamber 16 on same horizontal plane to make the casing surface level, the outward appearance is pleasing to the eye, and humidifying bottle holds and is equipped with LED backlight panel 161 on the rear panel in chamber 16, and LED backlight panel 161 and humidifying bottle hold and are equipped with LED lamp 162 between the rear panel in chamber, are convenient for observe the liquid level of humidifying bottle 17.

As shown in fig. 7, the integrated molecular sieve assembly 10 includes a first molecular sieve tank 41 and a second molecular sieve tank 42, and further includes an oxygen storage tank 5, a pressure reducing valve 6, a rotary valve 7 (adopting a rotary valve disclosed in chinese patent CN 205578787U) and a nitrogen discharge device 8 which are sequentially arranged from top to bottom, the oxygen storage tank 5, the pressure reducing valve 6, and the rotary valve 7 are arranged between the first molecular sieve tank 41 and the second molecular sieve tank 42, the first molecular sieve tank 41, the second molecular sieve tank 42, the oxygen storage tank 5, the pressure reducing valve 6, the rotary valve 7, and the nitrogen discharge device 8 are designed in an integrated manner, the upper ends of the first molecular sieve tank 41, the second molecular sieve tank 42, and the oxygen storage tank 5 are further provided with a cover body 9, a channel is arranged in the cover body 9, so that the upper ends of the first molecular sieve tank 41 and the second molecular sieve tank 42 are communicated with the oxygen storage tank 5, the lower ends of the first molecular sieve tank 41 and the second molecular sieve tank 42 are communicated with the rotary valve 7, the oxygen storage tank 5 is communicated with a pressure reducing valve 6.

The pressure reducing valve 6 is provided with a pressure reducing valve air outlet 61, and is sequentially connected with an electronic flowmeter 900, a bacteria filter 600, an oxygen concentration sensor 700 and a humidification bottle 17 on the oxygen generator through a silicone tube 31.

As shown in fig. 1, a compressor assembly 2 is arranged in the cabinet cover 15, a silencing bottle 100 and an electromagnetic valve 200 are arranged above the cabinet cover 15, and the silencing bottle 100 and the electromagnetic valve 200 are arranged in the casing; the cabinet cover 15 is arranged above the base 14, and silencing cotton 300 is arranged between the cabinet cover 15 and the base 14 and used for eliminating noise in the working process of the compressor assembly 2; a gap layer is arranged between the case cover 15 and the rear shell panel 12 (namely, a gap is reserved between the case cover and the rear shell panel, usually 2-3cm), so that the sound insulation effect can be improved; the housing cover 15 is made of a sound-absorbing material, or a sound-absorbing material such as sound-absorbing cotton, slag cotton, wave-crest sponge or foam rubber is bonded to the outer surface of the housing cover 15.

The compressor assembly 2 further comprises a damper 24 disposed below the compressor 20, the damper 24 is fixed on the base 14 of the housing, and the damper 24 reduces noise and vibration and prolongs the service life of the device.

The upper part of the integrated molecular sieve assembly 10 is slightly higher than the cabinet cover 15, a silencing bottle 100, a main board controller 800, an oxygen concentration sensor 700, an electromagnetic valve 200, an air source pipe joint 35 and an electronic flowmeter 900 are arranged above the cabinet cover 15, the silencing bottle 100, the main board controller 800, the oxygen concentration sensor 700 and the electromagnetic valve 200 are sequentially arranged from back to front, and the air source pipe joint 35 is arranged on the right side of the main board controller 800; the electronic flow meter 900 is arranged on the right side of the electromagnetic valve 200, and a bacteria filter 600 is arranged above the electronic flow meter 900; a double joint 34 is arranged above the integrated molecular sieve assembly 10, and the double joint 34 is respectively connected with an atomizing pipe 33 and an oxygen pipe 36 and is respectively used for discharging mist or oxygen; this mode of setting up rationally utilizes the space between quick-witted case lid 15 and roof 13 for off-the-shelf compact structure, thereby reduce off-the-shelf volume greatly.

As shown in fig. 2, 3 and 5, the electronic flow meter 900 includes an air inlet/outlet column 901, a flow regulating valve 902, a stepping motor 903, a motor support 904 and a control panel 905, the air inlet/outlet column 901 includes an air inlet column 911, an air outlet column 912 and a regulating valve accommodating cavity 913, an inner wall of the regulating valve accommodating cavity 913 is provided with an internal thread, an end face of the air inlet column 911 or the air outlet column 912 is provided with a flow sensor 953, and the flow sensor 953 is fixed on the oxygen generator and is configured to receive a flow signal of the air inlet column 911 or the air outlet column 912 and transmit the flow signal to a signal input module 951 (shown in fig. 6) on the control panel 905.

As shown in fig. 2, the flow regulating valve 902 is inserted into the regulating valve accommodating cavity 913; the flow control valve 902 includes a rotatable sleeve 921, the front end of the sleeve 921 is provided with a tapered needle 922, and the rear end of the sleeve 921 matches with a rotor 931 of the stepping motor 903. When the device is used, a driver of the stepping motor 903 drives the rotor 931 to rotate, so that the sleeve 921 is driven to rotate; and an external thread is arranged on the outer wall of the sleeve 921 and is matched with the internal thread of the regulating valve accommodating cavity 913. When the flow control valve 902 moves forward or backward, the conical needle 922 and the gas inlet column 911 of the gas inlet and outlet column 901 form gas flow spaces with different sizes, so that different flow control is realized. It should be understood that the inlet column 911 and the outlet column 912 of the inlet and outlet column 901 can be interchanged, and when in use, one of the ports can be selected as the inlet column and the other port can be selected as the outlet column according to the arrangement of internal components of the oxygen generator.

A sealing ring 924 is arranged between the conical needle 922 and the sleeve 921 to play a role in sealing and prevent oxygen from flowing out from the rear end opening of the sleeve 921.

As shown in fig. 3 and 4, motor holder 904 includes bottom plate 941, and the middle part top of bottom plate 941 is equipped with the open cylinder 942 in top, is equipped with a baffle 943 on the cylinder 942, and baffle 943 can direct joint in the draw-in groove of cylinder 942, be equipped with a locating part 923 on the rear end lateral wall of sleeve 921, when locating part 923 of sleeve 921 rotates to baffle 943 department, can restrict sleeve 921 and continue to rotate towards this direction, and the taper needle 922 of sleeve 921 inserts into air inlet column/air outlet column completely this moment, and air flow is zero promptly, when adjusting flow at every turn, the utility model discloses a stop part 923 that step motor 903 can control sleeve 921 rotates to the position of baffle 943, guarantees that the error of flow is unanimous at every turn to ensure the error at the working range, ensure the accuracy of result. It should be noted that the error of a single unidirectional movement can be determined before use. And then, the error of single unidirectional movement is removed through programming, and the result of each forward/reverse movement is ensured to be accurate.

As shown in fig. 4, a through hole 944 is formed in the middle of the bottom plate 941, and the through hole 944 is communicated with the regulating valve accommodating chamber 913 of the air inlet/outlet column 901.

As shown in fig. 3, the rear end of the sleeve 921 is a rectangular hole 926, the rectangular hole 926 matches with the rotor 931 of the stepping motor 903, and the sleeve 921 is rotated by the rotation of the rotor 931.

The motor bracket 904 and the air inlet/outlet column 901 are integrally formed.

At least two stepping motor mounting holes 945 and at least two base plate mounting holes 946 are formed in the base plate 941, and the stepping motor 903 is fixedly connected with the stepping motor mounting holes 945 in the base plate 941 through two or more fixing pieces (such as bolts or screws); the base plate 941 is connected to the oxygen generator, and when the oxygen generator is used, the base plate mounting hole 946 on the base plate can penetrate two or more fixing members (such as bolts or screws) to be connected to the oxygen generator.

As shown in fig. 2 and 6, the vertical plate 947 is further mounted below the bottom plate 941, the vertical plate 947 and the bottom plate 941 are integrally formed, the vertical plate 947 is mounted with the control panel 905 (the vertical plate 947 is provided with a control panel mounting hole 948, the control panel mounting hole 948 can pass through a fixing member (such as a bolt or a screw, etc.) to mount the control panel 905 on the vertical plate 947), the control panel 905 is provided with a signal input module 951 and a signal output module 952, and the signal input module 951 and the signal output module 952 are electrically connected; the signal input module 951 is electrically connected with the flow sensor 953 and the main board controller 800 of the oxygen generator respectively and is used for receiving signals of the main board controller 800 and signals received by the flow sensor 953; the signal output module 952 is connected to the stepping motor 903 and is configured to control a stepping angle of the stepping motor 903.

The cross-section that the chamber 913 was held to the governing valve is the toper, and the front end is narrow, and the rear end is wide, sealing washer 924 and governing valve hold the chamber 913 phase-match.

A connecting piece 925 is further arranged between the sleeve 921 and the conical needle 922, the connecting piece 925 and the conical needle 922 are integrally formed, and the sleeve 921 and the connecting piece 925 are connected in an inserting mode and fixedly connected through glue and the like. Be equipped with ring groove on connecting piece 925, sealing washer 924 cover is on ring groove to the inboard of sealing washer is inlayed in ring groove, can prevent sealing washer 924 along the axial slip of flow control valve, and its stable in structure is firm, and sealed effect is better

As shown in fig. 1, the compressor assembly 2 includes a compressor 20, three joints are arranged on the compressor 20, which are a first air inlet joint 21, a first air outlet joint 22 and a second air outlet joint 23, the first air inlet joint 21 is connected with the air outlet of the silencing bottle 100 through a silicone tube 31, the first air outlet joint 22 is connected with the rotary valve 7 through the silicone tube 31, the second air outlet joint 23 is connected with an air source pipe joint 35 through an air source output pipe 32, the air source pipe joint 35 is connected with the electromagnetic valve 200 through the air source output pipe 32, and the electromagnetic valve 200 is connected with a double joint 34 above the integrated molecular sieve assembly 10 through an atomizing pipe 33.

As shown in fig. 1, an air duct is disposed on the rear shell panel 12, an axial flow fan 400 is disposed in the air duct, and the axial flow fan 400 is disposed above the rear end of the compressor assembly 2 and is used for dissipating heat from the compressor 20, so as to prolong the service life of the compressor. The rear end of the air duct is provided with an air duct air inlet cover 500 to ensure the use safety. The air duct inlet cover 500 is in the same horizontal plane with the rear housing panel 12 to make the housing appearance flat. Wherein, the connected mode of wind channel air inlet cover 500 and casing is prior art, if direct fixed connection, adopts the bolt can dismantle the connection etc. for the convenience of overhauing, can adopt to dismantle the connected mode.

As shown in fig. 8 and 9, the cover 9 includes a first molecular sieve tank cover plate 91 disposed at the left end, an oxygen storage tank cover plate 93 disposed at the middle part, and a second molecular sieve tank cover plate 92 disposed at the right end, the first molecular sieve tank cover plate 91, the oxygen storage tank cover plate 93, and the second molecular sieve tank cover plate 92 are integrally formed, the oxygen storage tank cover plate 93 is provided with a first air inlet 94 and a second air inlet 95 communicated with the oxygen storage tank 5, the first molecular sieve tank cover plate 91 and the second molecular sieve tank cover plate 92 are respectively provided with a first vent hole 96 and a second vent hole 97 communicated with the first molecular sieve tank 41 and the second molecular sieve tank 42, a throttle hole 98 is disposed between the first molecular sieve tank cover plate 91 and the second molecular sieve tank cover plate 92, the first vent hole 96 and the throttle hole 98 are communicated with the first air inlet 94, the second vent hole 97, the throttle hole 98 are communicated with the second air inlet 95, the first intake port 94 and the second intake port 95 are each fixedly connected to a throttle valve 99.

The diameters of the first gas inlet hole 94 and the second gas inlet hole 95 are both larger than the diameter of the throttle hole 98, so that most of the gas enters the oxygen storage tank 5, and a small part of the gas enters the other molecular sieve tank through the throttle hole 98, and is used for pressing down the nitrogen in the other molecular sieve tank to the rotary valve 7 for discharging.

As shown in fig. 7 and 10, a dual-purpose joint jack 44 is provided below each of the first molecular sieve tank and the second molecular sieve tank, the dual-purpose joint jacks 44 of the first molecular sieve tank 41 and the second molecular sieve tank 42 are respectively connected with the first valve body outlet joint 75 and the second valve body outlet joint 76 of the rotary valve 7 in a sealing manner, and are used for discharging nitrogen or feeding air, when the first molecular sieve tank 41 or the second molecular sieve tank 42 is used for oxygen generation, the dual-purpose joint 44 serves as an inlet for conveying air to the rotary valve 7, and when the other molecular sieve tank is used for oxygen generation, the dual-purpose joint 44 serves as a discharge outlet for nitrogen.

As shown in fig. 1 and 7, the oxygen storage tank 5 includes a gas storage tank body 51, an air outlet of the gas storage tank body 51 is connected to the pressure reducing valve 6, an air outlet of the pressure reducing valve 6 is connected to the electronic flow meter 900 through the silicone tube 31, the electronic flow meter 900 is connected to an air inlet of the bacterial filter 600, an air outlet of the bacterial filter 600 is connected to an air inlet of the oxygen concentration sensor 700 through the silicone tube 31, and an air outlet of the oxygen concentration sensor 700 is connected to the humidification bottle 17 through the silicone tube 31.

As shown in fig. 1 and 10, the rotary valve 7 includes a rotary valve body 71, a valve core assembly 72, and a synchronous motor 73 disposed above the rotary valve body 71, four joints are disposed on the rotary valve body 71, which are a first valve body inlet joint 74, a first valve body outlet joint 75, a second valve body outlet joint 76, and a third valve body outlet joint 77, respectively, the first valve body inlet joint 74 is connected to the compressor 20 through a silicone tube, the first valve body inlet joint 74 is disposed on a side portion of the rotary valve body 71, the first valve body outlet joint 75 and the second valve body outlet joint 76 are disposed on left and right sides of the rotary valve body 71, and are connected to the first molecular sieve tank 41 and the second molecular sieve tank 42, respectively, and the third valve body outlet joint 77 is disposed below the rotary valve body 71, and is connected to the nitrogen ejector 8 for discharging nitrogen gas.

The base 14 is provided with a nitrogen exhaust outlet (not shown), and the nitrogen exhaust 8 is connected with the nitrogen exhaust outlet on the base so as to exhaust nitrogen to the ambient air.

The oxygen storage tank 5 and the pressure reducing valve 6 are connected in a threaded fit manner.

The first molecular sieve tank 41, the second molecular sieve tank 42 and the oxygen storage tank 5 of the utility model are 3 liter tanks, and the air pressure of the two molecular sieve tanks is 0.04MPa-0.05 MPa.

As shown in fig. 11, the oxygen generator of the present invention further includes a main board controller 800, wherein the main board controller 800 includes an encoding circuit 801 for controlling the compressor 20, the axial flow fan 400, the electromagnetic valve 200, the oxygen concentration sensor 700, the synchronous motor 73 of the rotary valve 7, the electronic flow meter 900, etc.; a transmitting circuit 802 connected to the encoding circuit 801 and transmitting signals to control the compressor 20, the axial flow fan 400, the solenoid valve 200, the oxygen concentration sensor 700, the synchronous motor 73, the electronic flow meter 900, and the like; and a power supply 803 for providing power for the encoding circuit 801 and the transmitting circuit 802.

As shown in fig. 1, four universal wheels 18 are mounted below the base 14, so that the movement and the use are convenient.

The top plate 13 is provided with a built-in lifting handle 133 for lifting and pushing the oxygen generator or directly lifting the oxygen generator, so that the oxygen generator is more convenient to move, the lifting handle 133 is arranged right above the case cover 15, and the upper end of the integrated molecular sieve assembly 10 is higher than the upper end of the case cover 15, so that the lifting handle 133 is arranged right above the case cover 15, and the space between the case cover 15 and the top plate 13 can be further utilized.

The utility model discloses a small-size oxygenerator use as follows:

air is sucked by the air inlet of the silencing bottle 100, then flows out of the air outlet of the silencing bottle 100, and enters the compressor 20 through the silicone tube; the compressor 20 compresses air, the air flows out of the first air outlet joint 22 after being compressed, enters the rotary valve 7 through the silicone tube 31, and is shunted through the rotary valve 7; when the electromagnetic valve 200 is in the open state, air is compressed, passes through the atomizing tube 33, and flows out from the double joint 34.

The air compressed by the compressor 20 enters the first molecular sieve tank 41 through the rotary valve 7, the nitrogen is adsorbed by molecules in the first molecular sieve tank 41 or the second molecular sieve tank 42, the oxygen flows upwards and enters the cover body 9 from the first vent hole 96, then the air flows simultaneously enter the first air inlet 94 and the orifice 98, the air flows enter the throttle valve 99, a small part of the air flow of the oxygen enters the other molecular sieve tank, the nitrogen in the other molecular sieve tank is pressed downwards, so that the nitrogen enters the rotary valve 7 from the dual-purpose joint 44 below and is discharged through the third valve body outlet joint 77 of the rotary valve 7, and meanwhile, most of the oxygen flows out of the other outlet of the throttle valve 99 and enters the oxygen storage tank 5. Then enters the pressure reducing valve 6, the electronic flow meter 900, the bacteria filter 600, the oxygen concentration sensor 700 in sequence and finally enters the humidification bottle 17. After being humidified, the oxygen entering the humidification bottle 17 enters the double joint 34 through the oxygen pipe 36 and then flows out from the oxygen outlet of the double joint.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A sound-deadening type oxygen generator with an electronic flow meter comprises a shell, and is characterized in that the shell comprises a front shell panel, a rear shell panel, a top plate and a base, a case cover is arranged between the front shell panel and the rear shell panel, an integrated molecular sieve assembly is arranged in front of the case cover, a humidifying bottle accommodating cavity is arranged in front of the integrated molecular sieve assembly, a double joint is arranged above the integrated molecular sieve assembly, and the double joint is respectively connected with an atomizing pipe and an oxygen pipe;

the case cover is arranged above the base, silencing cotton is arranged between the case cover and the base, a gap layer is arranged between the case cover and the rear shell panel, and a silencing material layer is arranged on the inner surface and/or the outer surface of the case cover;

a compressor assembly is arranged in the case cover, the compressor assembly further comprises a shock absorber arranged below the compressor, and the shock absorber is fixed on a base of the shell;

a silencing bottle, a main board controller, an oxygen concentration sensor, an electromagnetic valve, an air source pipe joint, an electronic flowmeter and a bacteria filter are arranged above the cabinet cover, the silencing bottle, the main board controller, the oxygen concentration sensor and the electromagnetic valve are sequentially arranged from back to front, and the air source pipe joint is arranged on the right side of the main board controller; the electronic flowmeter is arranged on the right side of the electromagnetic valve; a bacteria filter is arranged above the electronic flowmeter;

the electronic flowmeter comprises an air inlet and outlet column, a flow regulating valve, a stepping motor for driving the flow regulating valve to rotate, a motor support and a control panel, wherein the air inlet and outlet column comprises an air inlet column, an air outlet column and a regulating valve accommodating cavity;

the flow regulating valve is arranged in the regulating valve accommodating cavity and is in threaded fit connection with the regulating valve accommodating cavity; the front end of the flow regulating valve is provided with a conical needle, and the rear end of the flow regulating valve is matched with a rotor of the stepping motor; the flow regulating valve is provided with a sealing ring, and the sealing ring is matched with the regulating valve accommodating cavity;

the motor support comprises a bottom plate, a baffle is arranged on the bottom plate, a limiting part is arranged on the side wall of the rear end of the flow regulating valve, when the limiting part rotates to the position of the baffle, a conical needle of the flow regulating valve is completely inserted into the air inlet column/the air outlet column, a through hole is arranged in the middle of the bottom plate, and the through hole is communicated with an accommodating cavity of the regulating valve of the air inlet column and the air outlet column.

2. The muffling oxygen generator with the electronic flow meter according to claim 1, wherein the motor bracket and the air inlet/outlet column are integrally formed.

3. The muffling oxygen generator with the electronic flow meter according to claim 1, wherein a vertical plate is further installed below the bottom plate, the vertical plate and the bottom plate are integrally formed, a control panel is installed on the vertical plate, a signal input module and a signal output module are arranged on the control panel, and the signal input module and the signal output module are electrically connected; the signal input module is respectively and electrically connected with the flow sensor and a main board controller of the oxygen generator; the signal output module is connected with the stepping motor.

4. The muffling type oxygen generator with the electronic flow meter according to claim 1, wherein a humidifying bottle is installed in the humidifying bottle accommodating cavity, the front panel and the front shell panel of the humidifying bottle accommodating cavity are on the same horizontal plane, an LED backlight panel is arranged on the rear panel of the humidifying bottle accommodating cavity, and an LED lamp is arranged between the LED backlight panel and the rear panel of the humidifying bottle accommodating cavity.

5. The muffling type oxygen generator with the electronic flow meter according to claim 1, wherein the compressor assembly comprises a compressor, the compressor is provided with three connectors, namely a first air inlet connector, a first air outlet connector and a second air outlet connector, the first air inlet connector is connected with a muffling bottle, the first air outlet connector is connected with a rotary valve, the second air outlet connector is connected with an air source connector, the air source connector is connected with the electromagnetic valve, and the electromagnetic valve is connected with a double connector through an atomizing pipe.

6. The muffling oxygen generator with the electronic flow meter according to claim 1, wherein an axial flow fan is disposed on the rear shell panel, and the axial flow fan is disposed above the rear end of the compressor assembly.

7. The muffling oxygen generator with the electronic flow meter according to claim 1, wherein the integrated molecular sieve assembly comprises a first molecular sieve tank, a second molecular sieve tank, an oxygen storage tank, a pressure reducing valve, a rotary valve and a nitrogen discharge device, the oxygen storage tank, the pressure reducing valve and the rotary valve are sequentially arranged from top to bottom, the oxygen storage tank, the pressure reducing valve and the rotary valve are arranged between the first molecular sieve tank and the second molecular sieve tank, the first molecular sieve tank, the second molecular sieve tank, the oxygen storage tank, the pressure reducing valve, the rotary valve and the nitrogen discharge device are designed in an integrated manner, the upper ends of the first molecular sieve tank, the second molecular sieve tank and the oxygen storage tank are further provided with cover bodies, the upper ends of the first molecular sieve tank and the second molecular sieve tank are communicated with the oxygen storage tank, the lower ends of the first molecular sieve tank and the second molecular sieve tank are communicated with the rotary valve, and the oxygen storage tank is communicated with the pressure reducing valve.

8. The muffling type oxygen generator with an electronic flow meter according to claim 7, wherein a dual-purpose joint jack is disposed below each of the first molecular sieve tank and the second molecular sieve tank, and the dual-purpose joint jacks of the first molecular sieve tank and the second molecular sieve tank are respectively connected to the first valve body outlet joint and the second valve body outlet joint of the rotary valve in a sealing manner.

9. The muffling oxygen generator with an electronic flow meter according to claim 7, wherein the oxygen storage tank comprises an air storage tank body, an air outlet of the air storage tank body is connected with a pressure reducing valve, an air outlet of the pressure reducing valve is connected with the electronic flow meter, the electronic flow meter is connected with an air inlet of a bacterial filter, an air outlet of the bacterial filter is connected with an air inlet of an oxygen concentration sensor, and an air outlet of the oxygen concentration sensor is connected with a humidification bottle through a silicone tube.

10. The muffling type oxygenerator with an electronic flow meter as claimed in claim 7, wherein the rotary valve comprises a rotary valve body, a valve core assembly and a synchronous motor arranged above the rotary valve body, the rotary valve body is provided with four connectors, namely a first valve body inlet connector, a first valve body outlet connector, a second valve body outlet connector and a third valve body outlet connector, the first valve body inlet connector is connected with the compressor, the first valve body inlet connector is arranged on the side part of the rotary valve body, the first valve body outlet connector and the second valve body outlet connector are respectively arranged on the left side and the right side of the rotary valve body and are respectively connected with the first molecular sieve tank and the second molecular sieve tank, and the third valve body outlet connector is arranged below the rotary valve body and is connected with the nitrogen exhauster.

Images