CN111167260A - Molecular sieve gas circuit control device and oxygenerator - Google Patents
Molecular sieve gas circuit control device and oxygenerator Download PDFInfo
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- CN111167260A CN111167260A CN202010120090.3A CN202010120090A CN111167260A CN 111167260 A CN111167260 A CN 111167260A CN 202010120090 A CN202010120090 A CN 202010120090A CN 111167260 A CN111167260 A CN 111167260A
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- molecular sieve
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- 239000002808 molecular sieve Substances 0.000 title claims abstract description 123
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 171
- 239000001301 oxygen Substances 0.000 claims description 39
- 229910052760 oxygen Inorganic materials 0.000 claims description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 38
- 230000007704 transition Effects 0.000 claims description 15
- 230000030279 gene silencing Effects 0.000 abstract description 4
- 238000005538 encapsulation Methods 0.000 abstract description 3
- 239000012528 membrane Substances 0.000 description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000002640 oxygen therapy Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000000059 Dyspnea Diseases 0.000 description 1
- 206010013975 Dyspnoeas Diseases 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000018875 hypoxemia Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0446—Means for feeding or distributing gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/047—Pressure swing adsorption
- B01D53/053—Pressure swing adsorption with storage or buffer vessel
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0229—Purification or separation processes
- C01B13/0248—Physical processing only
- C01B13/0259—Physical processing only by adsorption on solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model provides a molecular sieve gas circuit controlling means, includes end cover, gas circuit body, control valve subassembly, the end cover is provided with air inlet joint, connects high pressurized air source, end cover and this body sealing connection of gas circuit, the control valve subassembly set up in this is internal in the gas circuit, this internal air intake cavity and the exhaust cavity of being provided with of gas circuit, the air intake cavity respectively with air inlet joint and molecular sieve tower UNICOM, the exhaust cavity respectively with exhaust hole and molecular sieve tower UNICOM, the control valve subassembly control air intake cavity and the switching of exhaust cavity. According to the molecular sieve gas circuit control device, the two silencing cavities are formed by the end cover and the gas inlet cavity and the gas outlet cavity of the gas circuit body, so that the instability of gas flow is eliminated, the noise of gas inlet and gas outlet is effectively eliminated, and meanwhile, the gas circuit body is used for integrating all components into a whole, so that external joints are not needed, the number of joints is effectively reduced, the risk of gas leakage is reduced, and the molecular sieve gas circuit control device is simple to maintain; meanwhile, the gas circuit structure has good encapsulation and compact structure.
Description
Technical Field
The invention belongs to the technical field of oxygen generation equipment, and particularly relates to a molecular sieve gas circuit control device and an oxygen generator.
Background
The molecular sieve oxygen generator adopts the working principle of pressure swing adsorption, separates more than 90 percent of oxygen from air, only needs electricity without other consumables, has mature technology, and is widely applied to oxygen supply in industry, hospitals and families. Oxygen therapy is used as an important medical means for correcting hypoxemia, relieving dyspnea and other heart and lung symptoms, and has obvious effect and long application history. With the continuous popularization of small household molecular sieve oxygen generators, the household oxygen therapy is generally popularized and used. The international standard and national standard related to the small-sized domestic molecular sieve oxygen generator are also proposed in succession to guide the product development and the industry supervision, and the international or domestic medical guide and expert advice related to the household oxygen therapy are also gradually formulated and proposed to guide the practitioner to provide the standard household oxygen therapy service. The small-sized domestic molecular sieve oxygen generator is objectively required to develop towards the direction of standardization and specialization to ensure the safety and the effectiveness of oxygen therapy, and in short, the important point is as follows: the long-term oxygen concentration is stable, the long-term operation is reliable, the noise is low, and the user experience is good.
The following problems generally exist in the prior small-sized household molecular sieve oxygen generator: 1. the oxygen generation process is more complicated, and the gas circuit control structure is complicated, and the pipe connection is many, the solenoid valve uses more, and spare part is numerous, and the space is nervous to be arranged difficult, and modularization, standardization level are low, and the maintenance difficulty, the fault rate is higher, the installation technology is complicated, and production efficiency is low, the cost of manufacture is high. 2. Because the air path control is complex, the noise generated in the alternating reciprocating process of the electromagnetic valve and the molecular sieve tower is the main source of the noise of the whole machine, and the noise control also becomes a problem difficult to effectively control.
The inventor has found that the inventor tries to solve the above two problems by examining the prior patent documents, and the patent application specifically selects two typical documents as patent comparison.
Citation of patent application document one: the Chinese patent application discloses: CN110605000A discloses an oxygen generator adsorption tower upper cover and an air inlet and nitrogen discharge system, which utilize the oxygen generator adsorption tower upper cover, the air inlet and nitrogen discharge system and an oxygen generator, wherein the top of a cover plate of the adsorption tower upper cover is provided with an air inlet nozzle, a four-position six-way electromagnetic valve, a pressure regulating valve and an oxygen outlet nozzle; the four-position six-way electromagnetic valve is an inseparable whole, a pair of air inlet interfaces of the four-position six-way electromagnetic valve are jointly and hermetically connected with an air inlet bin, a valve body of the pressure regulating valve and a cover plate are integrally cast, an inlet of the pressure regulating valve is hermetically connected with an interface of the high-pressure oxygen bin, and an outlet end of the pressure regulating valve is communicated with an oxygen outlet nozzle through an oxygen output channel arranged in the cover plate.
Citation of patent application document two: the Chinese utility model patent, publication No. CN209968030U, discloses a molecular sieve tower, which is used for solving the technical problem that the gas circuit connection of the existing oxygenerator is too complicated; wherein, the molecular sieve tower includes: the upper cover, the first molecular sieve cavity, the gas collection cavity, the second molecular sieve cavity and the lower cover; the inner cavity of the upper cover body is divided into: the first cover cavity, the second cover cavity, the third cover cavity, the first air passage, the second air passage and the third air passage; the first air passage and the third air passage are respectively communicated with the second air passage through one-way valves; a back flushing air passage which is independently communicated is arranged between the first air passage and the third air passage; the back flushing air passage is provided with a solenoid valve for opening and closing the back flushing air passage; the first cover cavity is used for buckling and sealing the first molecular sieve cavity; the second cover cavity is used for buckling the sealed gas collecting cavity; the third cover cavity is used for buckling and sealing the second molecular sieve cavity; the lower end of the lower cover is provided with a connector. The replacement of the molecular sieve tower can be completed through direct extraction and insertion in the maintenance operation, the hose connection is not needed again, and the operation is very convenient.
In the solutions of the above two documents, the molecular sieve gas path control device is formed by combining a molecular sieve tower, a separated bypass electromagnetic valve, a four-position six-way valve, a gas inlet and outlet conduit and a gas outlet silencing device, and they have the following problems: 1. the four-position six-way valve is generally small in size, a general small flow channel structure for gas flow is arranged in the four-position six-way valve, a joint node is generally narrow, when the valve is opened and closed, high-pressure gas flow passes through the four-position six-way valve, large gas path explosion sound is generated, primary noise is large, the noise is spread along a valve body, a pipeline, a molecular sieve tower and other places, and the noise treatment difficulty is large and the effect is poor due to the limitation of an internal structure at the source;
2. by using the design of the cover plate cavity, more components, low integration level, more gas circuits, more joints, high gas leakage risk, more fault points, poor maintainability and increased overhauling difficulty are realized; 3. the use experience of the patient is affected due to the disturbance of noise factors, so that the compliance of the patient with oxygen therapy is reduced.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provides a molecular sieve gas circuit control device with high integration level and low noise and an oxygen generator.
The technical scheme of the invention is as follows:
the utility model provides a molecular sieve gas circuit controlling means, includes end cover, gas circuit body, control valve subassembly, the end cover is provided with air inlet joint, connects high pressurized air source, end cover and this body sealing connection of gas circuit, the control valve subassembly set up in this is internal in the gas circuit, this internal air intake cavity and the exhaust cavity of being provided with of gas circuit, the air intake cavity respectively with air inlet joint and molecular sieve tower UNICOM, the exhaust cavity respectively with exhaust hole and molecular sieve tower UNICOM, the control valve subassembly control air intake cavity and the switching of exhaust cavity.
The exhaust cavity surrounds the air inlet cavity, and the control valve assembly is arranged in the air inlet cavity and the exhaust cavity respectively.
The end cover comprises a second cover body and a first cover body, the first cover body is connected with the air inlet cavity in a sealing mode, the second cover body is connected with the air outlet cavity in a sealing mode, and the air inlet joint is arranged on the first cover body.
The control valve assembly comprises an electromagnetic valve controller, a control valve spool, a valve body and a control valve kinematic pair, wherein the valve body is provided with at least two gas path channels, at least one gas path channel is positioned in the gas inlet cavity, at least one gas path channel is positioned in the exhaust cavity, the control valve spool is arranged in the valve body, the gas path channel of the control valve spool is arranged corresponding to the gas path channel of the valve body, the control valve kinematic pair is arranged in the control valve spool, the electromagnetic valve controller drives the control valve kinematic pair to move, the gas path channel is opened or closed to communicate the gas inlet cavity with the molecular sieve tower, and the gas path channel is opened or closed to communicate the exhaust cavity with the molecular sieve tower.
The air passage channel is arranged into an annular gap, and the annular gap is fixedly connected through a supporting block.
The control valve kinematic pair comprises a first diaphragm, a second diaphragm and a connecting column, and the effective gas contact area of the second diaphragm is smaller than that of the first diaphragm.
The inboard of first diaphragm is provided with first bulge, the inboard of second diaphragm is provided with the second bulge, first bulge with the second bulge passes through spliced pole fixed connection, and when first diaphragm and second diaphragm atress simultaneously, first bulge drives spliced pole and second bulge along axial motion and removes, and when first diaphragm did not atress, first diaphragm resets and kick-backs, drives first bulge, second bulge and resets.
And the second diaphragm is provided with an air inlet gap along the circumferential direction.
The valve core of the control valve comprises at least two gas path channels and a valve core seat, the valve core seat is provided with a gas inlet hole communicated with the molecular sieve tower, the gas path channels are positioned at two sides of the valve core seat, the control valve kinematic pair is arranged in the valve core of the control valve, is fixedly connected with the valve core of the control valve, the first convex part and the second convex part are positioned at two sides of the valve core seat, the connecting column is positioned in the middle of the valve core seat and forms a transition cavity with the inner wall of the valve core seat, when the first diaphragm is stressed, the first bulge is tightly attached to one side of the valve core seat, a gap is reserved between the second bulge and the other side of the valve core seat, and the gap is communicated with the air inlet cavity, the transition cavity and the molecular sieve tower, when the first diaphragm is reset, a gap is formed between the first protruding portion and one side of the valve core seat, the second protruding portion is tightly attached to one side of the valve core seat, and the molecular sieve tower, the transition cavity and the exhaust cavity are communicated.
The electromagnetic valve controller comprises a bypass electromagnetic valve and an air path control assembly, the bypass electromagnetic valve controls the air path control assembly to be opened and closed, the air path control assembly is provided with three ports, a first end of the air path control assembly is communicated with the first diaphragm through an air path joint, a second end of the air path control assembly is communicated with an air inlet cavity, a third end of the air path control assembly is communicated with the outside atmosphere, the air path joint is arranged in a valve core of the control valve, the air path control assembly opens the first port and the second port, high-pressure gas is introduced into the air path joint to drive the first diaphragm to deform under stress; the bypass solenoid valve is opened, the gas circuit control assembly opens the third port, closes the second port, and the first diaphragm resets to open the exhaust passage.
The molecular sieve tower is provided with at least two molecular sieve gas path control devices corresponding to each molecular sieve tower, and each molecular sieve gas path control device is connected with the corresponding molecular sieve tower.
The air inlet connector is provided with two air inlet connectors which are arranged on one end cover, the air inlet cavity is provided with one air inlet cavity communicated with the two molecular sieve towers respectively, the air outlet cavity is provided with one air outlet cavity communicated with the two molecular sieve towers respectively, the air outlet cavity is provided with two valve bodies and a valve core, the two molecular sieve towers are controlled to be communicated with the air inlet cavity respectively, and the two molecular sieve towers are controlled to be communicated with the air outlet cavity respectively.
The utility model provides an oxygenerator, includes molecular sieve gas circuit controlling means, molecular sieve tower and oxygen memory, the one end of molecular sieve tower with oxygen memory UNICOM transmits oxygen in to the oxygen memory, the oxygen connect set up in the oxygen memory.
Has the advantages that:
the utility model provides a molecular sieve gas circuit controlling means, includes end cover, gas circuit body, control valve subassembly, the end cover is provided with air inlet joint, connects high pressurized air source, end cover and this body sealing connection of gas circuit, the control valve subassembly set up in this is internal in the gas circuit, this internal air intake cavity and the exhaust cavity of being provided with of gas circuit, the air intake cavity respectively with air inlet joint and molecular sieve tower UNICOM, the exhaust cavity respectively with exhaust hole and molecular sieve tower UNICOM, the control valve subassembly control air intake cavity and the switching of exhaust cavity.
The molecular sieve gas path control device of the invention utilizes the end cover and the gas inlet cavity and the gas outlet cavity of the gas path body to form two silencing cavities, a high-pressure gas source enters the gas inlet cavity from the gas inlet joint and then enters the molecular sieve tower through the control valve component, when the control valve component is opened and closed, the gas stably enters the control valve component from the gas inlet cavity and then enters the molecular sieve tower, the instability of gas flow is eliminated, when in gas discharge, the nitrogen of the molecular sieve tower is discharged to the gas outlet cavity through the control valve component and then is discharged to the outside, the discharged gas flow enters the gas outlet cavity orderly through a small space and then is discharged through the gas outlet hole, the exhaust noise is effectively eliminated, meanwhile, the gas path body is utilized to integrate the high-pressure gas source, the control valve component, the gas inlet joint and the molecular sieve tower into a whole, no external joint is needed, the number of, the maintenance is simple; meanwhile, the gas circuit structure has good encapsulation and compact structure.
Drawings
Fig. 1 is a schematic structural diagram of a molecular sieve gas circuit control device of the present invention.
Fig. 2 is a schematic structural diagram of an air inlet channel of the molecular sieve air path control device of the invention.
Fig. 3 is a schematic structural diagram of an exhaust channel of the molecular sieve gas circuit control device of the present invention.
Fig. 4 is a schematic structural diagram of a control valve kinematic pair of the molecular sieve gas circuit control device of the present invention.
The reference numerals are explained below:
1-end cover, 101-first cover, 102-second cover, 103-air inlet joint;
2-gas path body, 201-gas inlet cavity, 202-gas outlet cavity, 203-transition cavity, 204-gas inlet hole, 205-gas outlet hole;
3-control valve assembly, 301-valve body,
302-control valve core, 3021-gas path channel, 3022-supporting block, 3023-valve core seat
303-control valve kinematic pair, 3031-first membrane, 3032-second membrane, 3033-connecting column, 3034-first projection, 3035-second projection, 3036-air inlet gap;
304-electromagnetic valve controller 3041-driving gas circuit 3042-reset gas circuit;
4-molecular sieve column,
5-oxygen reservoir.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
The utility model provides a molecular sieve gas circuit controlling means, as shown in fig. 1, fig. 2, fig. 3, fig. 4, includes end cover 1, gas circuit body 2, control valve subassembly 3, end cover 1 is provided with air inlet joint 103, connects high-pressure air source, end cover 1 and gas circuit body 2 sealing connection, control valve subassembly 3, set up in the gas circuit body 2, be provided with air intake cavity 201 and exhaust cavity 202 in the gas circuit body 2, air intake cavity 201 respectively with air inlet joint 103 and molecular sieve tower 4 UNICOM, exhaust cavity 202 respectively with exhaust hole 205 and molecular sieve tower 4 UNICOM, the control valve subassembly 3 control air intake cavity 201 and the switching of exhaust cavity 202.
The molecular sieve gas path control device of the invention utilizes the end cover 1 and the gas inlet cavity 201 and the gas outlet cavity 202 of the gas path body 2 to form two silencing cavities, a high-pressure gas source enters the gas inlet cavity 201 from the gas inlet joint 103, then enters the molecular sieve tower 4 through the control valve component 3, when the control valve component 3 is opened and closed, the gas stably enters the control valve component 3 from the gas inlet cavity 201, then enters the molecular sieve tower 4, the instability of the gas flow is eliminated, when the gas is discharged, the nitrogen gas of the molecular sieve tower 4 is discharged to the gas outlet cavity 202 through the control valve component 3, then the gas flow discharged outside enters the gas outlet cavity 202 orderly through a small space and then is discharged through the gas outlet 205 arranged in the gas outlet cavity 202, the noise of the gas discharge is effectively eliminated, and simultaneously, the high-pressure gas source, the control valve component 3, the gas inlet joint 103 and the molecular sieve tower 4 are integrated into a, external joints are not needed, so that the number of the joints is effectively reduced, the air leakage risk is reduced, and the maintenance is simple; meanwhile, the gas circuit structure has good encapsulation and compact structure.
The exhaust cavity 202 surrounds the intake cavity 201, and the control valve assembly 3 is disposed in the intake cavity 201 and in the exhaust cavity 202. By utilizing the surrounding design, the volume of the gas path body 2 is effectively reduced, the integration level is higher, and a part of the control valve assembly 3 is arranged in the gas inlet cavity 201, and a part of the control valve assembly is arranged in the gas exhaust cavity 202, so that the gas inlet cavity 201, the gas exhaust cavity 202 and the molecular sieve tower are controlled to be switched on or off.
The end cap 1 includes a second cap body 102 and a first cap body 101, the first cap body 101 is hermetically connected to the air intake cavity 201, the second cap body 102 is hermetically connected to the air exhaust cavity 202, the first cap body 101 and the second cap body 102 are not conducted, and the air intake joint 103 is disposed on the first cap body 101. The second cover body 102 and the cavity of the air circuit body 2 are hermetically connected to form an exhaust cavity 202, the first cover body 101 and the cavity of the air circuit body 2 are hermetically connected to form an air inlet cavity 201, and a sealed cavity is formed by using the second cover body 102, the first cover body 101 and the cavity which are adapted to each other, the second cover body 102 and the cavity of the air circuit body 2 can be sealed by using a sealant, a sealing ring and other forms, and the first cover body 101 and the air inlet cavity 201 can be hermetically connected or can adopt the same sealing means as long as the sealing and fixing effects can be achieved.
The second cover 102 and the first cover 101 may be designed as separate structures, and then the first cover 101 and the second cover 102 may be sealed and fixed, or may be designed as an integrated cover structure adapted to the recent cavity and the exhaust cavity 202, so as to enhance the structural strength thereof.
The control valve assembly 3 includes an electromagnetic valve controller 304, a control valve spool 302, a valve body 301, and a control valve kinematic pair 303, the valve body 301 is provided with at least two air passage channels 3021, at least one air passage channel 3021 is located in the air intake cavity 201, at least one air passage channel 3021 is located in the air exhaust cavity 202, the control valve spool 302 is disposed in the valve body 301, the air passage channel 3021 of the control valve spool 302 is disposed corresponding to the valve body 301, the control valve kinematic pair 303 is disposed in the control valve spool 302, the electromagnetic valve controller 304 drives the control valve kinematic pair 303 to move, open or close the air passage channel 3021 disposed in the air intake cavity 201, and open or close the air passage channel 3021 disposed in the air exhaust cavity 202. The valve core 302 of the control valve is communicated with the cavity in the gas path body 2 through a gas path, and the gas path channel 3021 of the valve core is closed or opened by driving the control valve kinematic pair 303 through the solenoid valve controller, so that the conduction between the molecular sieve tower 4 and the gas inlet cavity 201 and the gas outlet cavity 202 is realized, and the structure is simple and easy to realize.
When the control valve core 302 is installed on the valve body 301, the air passage of the control valve core is arranged corresponding to the air passage of the valve body 301 and communicated with each other.
The air passage 3021 is provided with an annular gap, and the annular gap is fixedly connected with the supporting block 3022.
Annular gas circuit is favorable to high-pressure gas to get into valve body 301 through annular air flue in, compares the pipeline and has better trafficability characteristic, and gaseous even output does not produce the air current and explodes, does not produce great impact to the inside of valve, and the noise is little, and airflow stability is high.
As shown in fig. 4, the control valve kinematic pair 303 includes a first diaphragm 3031, a second diaphragm 3032, and a connection post 3033, and the second diaphragm 3032 has a smaller effective gas contact area than the first diaphragm 3031.
The diaphragm design of the control valve kinematic pair 303 allows the first diaphragm 3031 to move in the direction of the second diaphragm 3032 when both ends are simultaneously filled with air.
The inner side of the first membrane 3031 is provided with a first convex part 3034, the inner side of the second membrane 3032 is provided with a second convex part 3035, the first convex part 3034 and the second convex part 3035 are fixedly connected through a connecting column 3033, when the first membrane 3031 and the second membrane 3032 are simultaneously stressed, the first convex part 3034 moves in the axial direction to drive the connecting column 3033 and the second convex part 3035 to move, when the first membrane 3031 is not stressed, the first membrane 3031 always rebounds due to the high-pressure gas pressure of the second membrane 3032, and the first convex part 3034, the connecting column 3033 and the second convex part 3035 reset.
The invention realizes the conduction of the air channel 3021 by the design of the convex part, the movement of the membrane drives the convex part to move, thereby realizing the sealing or opening of the gap with the valve core, and the connecting column 3033 is a hard cylinder and is used for transmitting the pressure received by the membrane, thereby completing the movement.
The second membrane 3032 is provided with an air inlet notch 3036 along the circumferential direction. The air inlet notch 3036 can reduce the contact area difference between the second membrane 3032 and the first membrane 3031, and is convenient for air to be exhausted through the air inlet notch, so that the uniformity of the air flow is good.
The control valve core 302 comprises at least two air passage channels 3021 and a valve core seat 3023, the valve core seat 3023 is provided with an air inlet hole 204 communicated with the molecular sieve tower 4, the air passage channels 3021 are located on both sides of the valve core seat 3023, the control valve kinematic pair 303 is arranged in the control valve core 302, the first protrusion portion 3034 and the second protrusion portion 3035 are located on both sides of the valve core seat 3023, the connecting column 3033 is located in the middle of the valve core seat 3023 and forms a transition cavity 203 with the inner wall of the valve core seat 3023, when the first diaphragm 3031 is stressed, the first protrusion portion 3034 is tightly attached to one side of the valve core seat 3023, the second protrusion portion 3035 has a gap with the other side of the valve core seat 3023, the air inlet cavity 201, the transition cavity 203 and the molecular sieve tower 4 are communicated, the exhaust cavity 202 is not communicated with the transition cavity 203, and when the first diaphragm 3031 is not stressed, the first protrusion portion 3034 is provided with a gap with one side of the valve core seat, the second protruding part 3035 is tightly attached to one side of the valve core seat 3023, the molecular sieve column 4, the transition cavity 203 and the exhaust cavity 202 are communicated, and the air inlet cavity 201 and the transition cavity 203 are not communicated.
The first diaphragm 3031 and the second diaphragm 3032 of the control valve kinematic pair 303 are fixed on the valve core, when the first diaphragm 3031 is stressed, the diaphragms are recessed inwards to drive the first protruding portion 3034, the connecting column 3033 and the second protruding portion 3035 to move, and the cavities between the diaphragms and the air inlet cavity 201 are communicated, when the first diaphragm 3031 is not stressed, the first diaphragm 3031 rebounds to drive the first protruding portion 3034, the connecting column 3033 and the second protruding portion 3035 to reset, the cavities between the diaphragms are communicated with the air outlet cavity 202, and the electromagnetic valve controller 304 can control the movement of the control valve kinematic pair 303 through air flow control, so that the air inlet channel or the air outlet channel is controlled to be opened.
The electromagnetic valve controller 304 comprises a bypass electromagnetic valve and an air path control assembly, the bypass electromagnetic valve controls the air path control assembly to be opened and closed, the air path control assembly is provided with three ports, a first end of the air path control assembly is communicated with the first diaphragm 3031 through an air path joint, a second end of the air path control assembly is communicated with the air inlet cavity 201, a third end of the air path control assembly is communicated with the external atmosphere, the air path joint is arranged in the valve core of the control valve, the air path control assembly opens the first port and the second port, high-pressure gas is introduced into the air path joint to drive the first diaphragm 3031 to deform under stress; the bypass solenoid valve is opened, the gas circuit control assembly opens the third port, closes the second port, the first diaphragm 3031 resets, and the exhaust passage is opened.
The invention uses a bypass electromagnetic valve and an air path control assembly to complete the control of the valve body 301, the air path control assembly comprises a driving air path 3041 and a reset air path 3042, when the bypass electromagnetic valve is opened, the driving air path 3041 and the reset air path 3042 are conducted, the reset air path 3042 is conducted with the air inlet cavity 201, the high-pressure air in the air inlet cavity 201 is transmitted to the driving air path 3041 through the reset air path 3042, the driving air path 3041 is input into the control valve core 302 through an air path joint, at the moment, the air pressure at two sides of the control valve kinematic pair 303 is equal, because the stress area of the first membrane 3031 is larger than that of the second membrane 3032, the first membrane 3031 deforms towards the second membrane 3032 to generate concavity, the second bulge portion 3035 generates clearance with the valve core seat 3023, the air path channel 3021 is conducted with the air inlet cavity 201 and is conducted with the transition cavity 203, so that the air inlet channel is opened, a gas inlet cavity 201, a transition cavity 203, a molecular sieve tower,
the bypass electromagnetic valve is opened, the reset gas path 3042 is not conducted, the high-pressure gas in the driving gas path 3041 is exhausted, the first diaphragm 3031 is reset and rebounded, so that the gap between the first protruding portion 3034 and the valve core seat 3023 is opened, the exhaust cavity 202 is conducted with the transition cavity, and the nitrogen gas in the molecular sieve tower 4 is exhausted from the exhaust cavity 202 through the transition cavity.
The number of the molecular sieve towers 4 is at least two, a molecular sieve gas circuit control device is arranged corresponding to each molecular sieve tower 4, and each molecular sieve gas circuit control device is connected with the corresponding molecular sieve tower.
The molecular sieve gas circuit control device of the invention can be arranged corresponding to each molecular sieve tower 4.
The air inlet connectors 103 are arranged on one end cover 1, the air inlet cavity 201 is provided with one which is respectively communicated with the two molecular sieve towers 4, the air outlet cavity 202 is provided with one which is respectively communicated with the two molecular sieve towers 4, and the air inlet connector is provided with two valve bodies 301 and a valve core which respectively control the two molecular sieve towers 4 to be communicated with the air inlet cavity 201 and respectively control the two molecular sieve towers 4 to be communicated with the air outlet cavity 202.
The invention provides a combined molecular sieve gas circuit control device which can be respectively communicated with two molecular sieve towers 4, so that the volume is effectively saved, and 3 or 2 molecular sieve gas circuit control devices in two groups can be arranged to realize the gas circuit control of a plurality of molecular sieve towers 4.
Example 2: the utility model provides an oxygenerator, includes molecular sieve gas circuit controlling means, molecular sieve tower 4 and oxygen memory 5, the one end of molecular sieve tower 4 with oxygen memory 5 UNICOM transmits oxygen in 5 to oxygen memory, the oxygen connect set up in oxygen memory 5.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (13)
1. The utility model provides a molecular sieve gas circuit controlling means which characterized in that: the gas circuit comprises an end cover, a gas circuit body and a control valve assembly, wherein the end cover is provided with a gas inlet joint and is connected with a high-pressure gas source, the end cover is hermetically connected with the gas circuit body, the control valve assembly is arranged in the gas circuit body, a gas inlet cavity and a gas outlet cavity are arranged in the gas circuit body, the gas inlet cavity is respectively communicated with the gas inlet joint and a molecular sieve tower, the gas outlet cavity is respectively communicated with a gas outlet hole and the molecular sieve tower, and the control valve assembly controls the gas inlet cavity and the gas outlet cavity to be opened and.
2. The molecular sieve gas circuit control device of claim 1, characterized in that: the exhaust cavity surrounds the air inlet cavity, and the control valve assembly is arranged in the air inlet cavity and the exhaust cavity respectively.
3. The molecular sieve gas circuit control device of claim 2, characterized in that: the end cover comprises a second cover body and a first cover body, the first cover body is connected with the air inlet cavity in a sealing mode, the second cover body is connected with the air outlet cavity in a sealing mode, and the air inlet joint is arranged on the first cover body.
4. The molecular sieve gas circuit control device of claim 1, characterized in that: the control valve assembly comprises an electromagnetic valve controller, a control valve spool, a valve body and a control valve kinematic pair, wherein the valve body is provided with at least two gas path channels, at least one gas path channel is positioned in the gas inlet cavity, at least one gas path channel is positioned in the exhaust cavity, the control valve spool is arranged in the valve body, the gas path channel of the control valve spool is arranged corresponding to the gas path channel of the valve body, the control valve kinematic pair is arranged in the control valve spool, the electromagnetic valve controller drives the control valve kinematic pair to move, the gas path channel is opened or closed to communicate the gas inlet cavity with the molecular sieve tower, and the gas path channel is opened or closed to communicate the exhaust cavity with the molecular sieve tower.
5. The molecular sieve gas circuit control device of claim 4, characterized in that: the air passage channel is arranged into an annular gap, and the annular gap is fixedly connected through a supporting block.
6. The molecular sieve gas circuit control device of claim 4, characterized in that: the control valve kinematic pair comprises a first diaphragm, a second diaphragm and a connecting column, and the effective gas contact area of the second diaphragm is smaller than that of the first diaphragm.
7. The molecular sieve gas circuit control device of claim 6, characterized in that: the inboard of first diaphragm is provided with first bulge, the inboard of second diaphragm is provided with the second bulge, first bulge with the second bulge passes through spliced pole fixed connection, and when first diaphragm and second diaphragm atress simultaneously, first bulge drives spliced pole and second bulge along axial motion and removes, and when first diaphragm did not atress, first diaphragm resets and kick-backs, drives first bulge, second bulge and resets.
8. The molecular sieve gas circuit control device of claim 6, characterized in that: and the second diaphragm is provided with an air inlet gap along the circumferential direction.
9. The molecular sieve gas circuit control device of claim 7, characterized in that: the valve core of the control valve comprises at least two gas path channels and a valve core seat, the valve core seat is provided with a gas inlet hole communicated with the molecular sieve tower, the gas path channels are positioned at two sides of the valve core seat, the control valve kinematic pair is arranged in the valve core of the control valve, is fixedly connected with the valve core of the control valve, the first convex part and the second convex part are positioned at two sides of the valve core seat, the connecting column is positioned in the middle of the valve core seat and forms a transition cavity with the inner wall of the valve core seat, when the first diaphragm is stressed, the first bulge is tightly attached to one side of the valve core seat, a gap is reserved between the second bulge and the other side of the valve core seat, and the gap is communicated with the air inlet cavity, the transition cavity and the molecular sieve tower, when the first diaphragm is reset, a gap is formed between the first protruding portion and one side of the valve core seat, the second protruding portion is tightly attached to one side of the valve core seat, and the molecular sieve tower, the transition cavity and the exhaust cavity are communicated.
10. The molecular sieve gas circuit control device of claim 7, characterized in that: the electromagnetic valve controller comprises a bypass electromagnetic valve and an air path control assembly, the bypass electromagnetic valve controls the air path control assembly to be opened and closed, the air path control assembly is provided with three ports, a first end of the air path control assembly is communicated with the first diaphragm through an air path joint, a second end of the air path control assembly is communicated with an air inlet cavity, a third end of the air path control assembly is communicated with the outside atmosphere, the air path joint is arranged in a valve core of the control valve, the air path control assembly opens the first port and the second port, high-pressure gas is introduced into the air path joint to drive the first diaphragm to deform under stress; the bypass solenoid valve is opened, the gas circuit control assembly opens the third port, closes the second port, and the first diaphragm resets to open the exhaust passage.
11. The molecular sieve gas circuit control device according to any one of claims 1 to 10, characterized in that: the molecular sieve tower is provided with at least two molecular sieve gas path control devices corresponding to each molecular sieve tower, and each molecular sieve gas path control device is connected with the corresponding molecular sieve tower.
12. The molecular sieve gas circuit control device of claim 11, wherein: the air inlet connector is provided with two air inlet connectors which are arranged on one end cover, the air inlet cavity is provided with one air inlet cavity communicated with the two molecular sieve towers respectively, the air outlet cavity is provided with one air outlet cavity communicated with the two molecular sieve towers respectively, the air outlet cavity is provided with two valve bodies and a valve core, the two molecular sieve towers are controlled to be communicated with the air inlet cavity respectively, and the two molecular sieve towers are controlled to be communicated with the air outlet cavity respectively.
13. An oxygen generator, characterized in that: the molecular sieve gas circuit control device comprises the molecular sieve gas circuit control device as claimed in any one of claims 1 to 12, a molecular sieve tower and an oxygen storage, wherein one end of the molecular sieve tower is communicated with the oxygen storage to transmit oxygen into the oxygen storage, and the oxygen joint is arranged on the oxygen storage.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010120090.3A CN111167260A (en) | 2020-02-26 | 2020-02-26 | Molecular sieve gas circuit control device and oxygenerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010120090.3A CN111167260A (en) | 2020-02-26 | 2020-02-26 | Molecular sieve gas circuit control device and oxygenerator |
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| CN111167260A true CN111167260A (en) | 2020-05-19 |
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| CN202010120090.3A Pending CN111167260A (en) | 2020-02-26 | 2020-02-26 | Molecular sieve gas circuit control device and oxygenerator |
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| CN114105100A (en) * | 2020-08-28 | 2022-03-01 | 武汉美氧科技有限公司 | Long-life pressure swing adsorption oxygenerator |
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