CN1697682A - Gas concentrator - Google Patents
Gas concentrator Download PDFInfo
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- CN1697682A CN1697682A CN 200480000636 CN200480000636A CN1697682A CN 1697682 A CN1697682 A CN 1697682A CN 200480000636 CN200480000636 CN 200480000636 CN 200480000636 A CN200480000636 A CN 200480000636A CN 1697682 A CN1697682 A CN 1697682A
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Abstract
The present invention relates to a gas concentrator, which produces concentrated gas by applying a pressure difference to adsorbent having selective adsorption property to specific gas from mixed gas and by separating the specific gas. According to the present invention, there is provided the gas concentrator, comprising a filter for filtering out impurities from the mixed gas; a plurality of adsorption beds containing the adsorbent for separating the specific gas from the mixed gas supplied via the filter and including a backflow prevention means formed on channels through which the separated gas is discharged therefrom; a small pipe for interconnecting the channels at production stages of the adsorption beds with each other to perform processes of cleaning and applying vacuum pressure to the adsorption beds; a vacuum pumping means which is connected to a channel for supplying the mixed gas to the adsorption beds and generates the pressure difference caused from a difference between the a vacuum pressure and a pressure of the mixed gas; a valve means comprising a channel base of a single body formed with channels respectively connected to the adsorption beds, the channel for supplying the mixed gas, and the vacuum pumping means, and solenoid drivers mounted in the channel base for switching the channels formed in the channel base in order to alternately apply the vacuum pressure and the pressure of the mixed gas to the adsorption beds; and a gas supplying means for controllably supplying the mixed gas supplied from the filter to the gas separated and produced from the adsorption beds and then supplying a target space with the gas of which flow rate and concentration is controlled.
Description
Technical field
The present invention relates to a kind of gas concentrator that separates specific gas by difference that the sorbent material that separates the equipment of specific gas from mixed gas is exerted pressure; more specifically; related to a kind of gas concentrator; wherein be connected respectively to the extra backflow limiting device that each valve systems system of two adsorption beds that contain sorbent material had combined and provided simultaneously the protection sorbent material, and make gas concentrator be reduced to simple structure by valve system and adsorption bed being engaged with the cap fixed form.
Technical background
In general, mainly be divided into commercial with the method for producing concentrated gas by separate specific gas from mixed gas: the method for using gas separatory membrane and use put on pressure difference as zeolite molecular sieve (ZeoliteMolecular Sieve, ZMS) or carbonaceous molecular sieve (Carbon Molecular Sieve, transformation on sorbent material absorption (Pressure Swing Adsorption, PSA) method such as CMS).The PSA method is a kind ofly by pressure difference (pressuredifference) is put on specific gas to be had on the sorbent material of selective adsorption characteristic, produces the method for concentrated gas.According to by the working pressure that pressure difference caused, the PSA method is subdivided into
Barometric pointOr the common PSA method of more carrying out under the high pressure, the change vacuum suck (Vacuum Swing Adsorption, VSA) method and Vacuum Pressure Swing Adsorption (Vacuum Pressure Swing Adsorption, the VPSA) method, and combination that handled by vacuum pressure.All aforesaid methods all are called the PSA method.
Develop in the PSA in generation nineteen fifty method and be usually used in commercial production oxygen, nitrogen, hydrogen etc., then be applied to oxygen water purifier (oxygen water purifier) or air purifier and dry air, thereby also be used for oxygen concentrator (oxygen concentrator) with the form of small-sized household electronics.When the oxygen of industrial production high density, nitrogen etc., the adsorption bed (adsorption beds) that contains sorbent material is connected work with the form setting of tower (tower) and with a plurality of valves (valves) mostly.
Yet, when small-sized oxygen concentrator is used for medical treatment or household electrical appliance, should consider its size and economic benefit usually.Therefore, with respect to industrial concentrators, described household electrical appliance oxygen concentrator should be designed to have simple adsorption bed and valve, and effective and other parts logotype.Therefore, attempting by using minimized number valve and equipment at utmost to simplify adsorption bed and the auxiliary facility that is used to become the vacuum suck method always.
Barometric pointOr more in the common PSA method of high pressure operation, be used for pressure is applied in turn each device by a plurality of adsorption beds being provided and disposing as the rotary valve of valve.Though it is little that the advantage of these class methods is change in concentration and flow, and may reach more stable output, as comprising motor and be formed with the mechanism of the rotating disk of passage on it that there is restriction in miniaturization of rotary valve self.And, the restriction that also has an economic benefit.In addition, even magnetic valve is used for each adsorption bed, because magnetic valve is applicable to a normal atmosphere or higher pressure usually, therefore have the more complicated and higher shortcoming of structure precision of operation, it can cause expensive cost of needs and complicated operations control.
Fig. 1 is for being used for the synoptic diagram of the gas concentrator with two adsorption beds 1 and 1 ' of known PSA skill as everyone knows.At this, determine the schedule of operation of gas concentrator according to the combination of pumping installation.That is,, come its program of comparison according to vacuum pump apparatus 4 that gas is exerted pressure or gas compressing apparatus 8.Because the absorption program of sorbent material depends on the pressure of gas compressing apparatus 8, and the required pressure of absorption program can become barometric point usually, thereby when independent using gas compression set 8, can finish common PSA program.
In addition because vacuum pump apparatus 4 makes desorption pressure become vacuum pressure, if thereby when using vacuum pump apparatus 4 and gas compressing apparatus 8 simultaneously, the VPSA program of operating between the pressure that vacuum pressure and gas compressing apparatus 8 produce can be finished.Because the not influence of power by compression of sorbent material on the adsorption bed 1 and 1 ', if therefore with compressed air source unit (gas supplying means) 7 as a kind of vacuum pump apparatus, and combine with vacuum pump apparatus 4 and not during using gas compression set 8, can realize at barometric point or the VSA program more moved under the low pressure.
In addition, if whole using gas compression set 8, vacuum pump apparatus 4 and gas supply device 7, even can finish the VPSA program, but because the configuration and the economic problems of its complexity, so seldom use.
And, because by the multiple program of exploitation, reach adsorption bed 1 in V (P) the SA method, 1 ' and valvegear 2 miniaturizations tie up to vacuum pressure under and move, its with work in barometric point as mentioned above or more the PSA method of high pressure is opposite, therefore need be applicable to the adsorption bed 1,1 ' and the design of valvegear 2 of VSA program.
That is, as shown in Figure 1, can use a plurality of (two or more) to comprise the adsorption bed 1 and 1 ' of sorbent material.In addition, the function of valvegear 2 that is directly connected to the switch passage (switching channel) of adsorption bed 1 and 1 ' is to make the vacuum pressure that applied by vacuum pump apparatus 4 and the pressure of the mixed gas that flows into by strainer 3 or the pressure that is applied in the gas compressing apparatus 8 in adsorption bed 1 and 1 ' exchange mutually.
Usually, if when using two adsorption beds 1 and 1 ', then each adsorption bed 1 and 1 ' is equipped with magnetic valve (solenoid valve) (not shown) of independent control.If the quantity of adsorption bed 1 and 1 ' is very big, then can uses rotary valve (rotaryvalve), and on the rotating disk that drives by motor apparatus, form passage, so that mixed gas delivery is arrived each adsorption bed 1 and 1 '.
As shown in Figure 1, if adopt the VSA program of using two adsorption beds 1 and 1 ', vacuum pump apparatus 4 and gas supply device 7, then owing to there is not force of compression to put on valvegear 2, so can not use the control type magnetic valve of using usually, and only can use by direct power-actuated direct effect type magnetic valve.
In addition, if use the 4-way solenoid valve, then because its structure can not be controlled each adsorption bed.Open if can only be set to adsorption bed 1, another adsorption bed 1 ' just should cut out so.Therefore, can not use flexibly.In addition and since one of adsorption bed can with exterior, if therefore can exist the problem of not using tightness system then how protecting sorbent material.
Therefore, can use independently 3-way solenoid valve usually.Like this, just can make the connection of adsorption bed 1 and 1 ' complicated and need connection between a plurality of valves of valvegear 2.Therefore, can exist the problem that size increases, assembles complexity and deficiency in economic performance.
In addition, the gas separating method of employing has advantage, and shortcoming is also arranged.In the method that adopts gas separation membrane,, exist disadvantages associated such as envrionment temperature, moisture release though its used equipment is simple.In the method that adopts sorbent material, though the problem that does not exist moisture to discharge, the equipment complexity, and because sorbent material is subject to the particularly influence of moisture of impurity, so pay particular attention to usual keeping sorbent material.
Therefore, when using sorbent material, simplification device and inking device are so that it is subjected to lower its defective that remedies of influence of moisture to greatest extent.Though when the using gas separatory membrane, need be by carrying out the good pretreated dust that filters, when using sorbent material, owing to will recycle sorbent material in program process, therefore the absorption to impurity and moisture increases gradually.Like this, on the viewpoint of program, V (P) the SA program of carrying out process recycling by vacuum pressure has superiority than general PSA program.
Yet,,, operate when stopping also the moisture in can absorbed air even when adopting V (P) SA program if adsorption bed is not fully and external isolation.In order to prevent this from occurring, can use hygroscopic agent etc.Yet this is not the way that settles the matter once and for all, therefore need extras come thoroughly with adsorption bed 1 and 1 ' with the extraneous air isolation.A kind of shortcoming of PSA commodity of practical application is that not all adsorption bed 1 and 1 ' can both seal up if only adopt single valve to reduce cost and do not have additional valve.
Though can use a plurality of common valve to seal adsorption bed,, therefore need simpler device because there is the problem that cost is too high, control complexity and size increase in this valvegear with isolated extraneous air.
Summary of the invention
[technical problem]
The present invention is conceived to solve the aforementioned problems in the prior art.An object of the present invention is to provide a kind of gas concentrator of boosting productivity; the valvegear that is used for the VSA program by simplification; with valvegear and adsorption bed simple combination and integrated; to increase the productive rate of the simplification device that valvegear and adsorption bed form; feasible modularized by the VSA software allows the simplification of assemble compact gas concentrator become possibility; simultaneously; guarantee the raising of the reliability and the economical efficiency of equipment; this comes from by thorough isolation and protection sorbent material realizes low cost and device miniaturization, and wherein sorbent material after equipment uses is and air keeping isolatedly.
[technical solution]
In order to reach above-mentioned purpose, the invention provides a kind of gas concentrator, its by to from mixed gas to specific gas, with the sorbent material with selective adsorption characteristic exert pressure the difference and separate this specific gas, produce concentrated gas.This gas concentrator comprises the strainer that is used for filtering out impurity from mixed gas; A plurality of adsorption beds, it contains the sorbent material that is used for from through separation specific gas the mixed gas of strainer supply, and these adsorption beds also are included in the back-flow preventer that forms on the passage that can flow out divided gas flow; Be used for the interconnective ductule of the passage of adsorption bed production phase, to clean adsorption bed and vacuum pressure is applied to program on it; Be connected to passage, and generate vacuum pump apparatus from the pressure difference between vacuum pressure and the mixture pressure to adsorption bed supply mixed gas; Valvegear, the channel base and a plurality of electromagnetic coil drive that comprise a unit body, wherein channel base is formed with the passage that is connected respectively to adsorption bed, the passage of supply mixed gas, the passage of vacuum pump apparatus, and these electromagnetic coil drives are installed on the channel base, being used for open and close is formed on passage on the channel base, with alternately to the electromagnetic coil drive of adsorption bed supply vacuum pressure and mixture pressure; And gas supply device, be used for controllably supplying from the mixed gas of strainer and separate and process gas by adsorption bed, and subsequently to the object space supply gas, the equal may command of its gas flow and concentration.
In addition, according to the present invention, the channel base in being formed with the monomer of passage can be formed with the mounting portion that electromagnetic coil drive is installed, and connects the connection portion of adsorption bed, and is connected the passage connection portion of supplying mixed gas.Thereby adsorption bed be inserted and be joined to channel base can by the cap mode of connection.
In addition, according to the present invention, electromagnetic coil drive can comprise the framework that supports whole driving mechanism; Be installed in the coil that power is provided by the electric current supply in the framework; Come the piston of open and close passage by to-and-fro movement by the power of coil; The conduit of guiding piston; With extend to supravasal pumping unit connection portion.
In addition, according to the present invention, be formed on and discharge the low discharge that back-flow preventer on each passage of divided gas flow comprises vacuum breaker or have a resistance to flow from adsorption bed and subtract the stream pipe, and each vacuum breaker can comprise the outer catheter that is formed on the passage; Insert the backflow preventing mouth plug that outer catheter and its body are formed with passage; Be connected the sealing air valve on the backflow preventing mouth plug, so that closely contact with the outer catheter inlet of gas inflow part; And the support spring that is positioned at the outer catheter outlet of vent gas body portion, to support vacuum breaker.
Moreover, according to the present invention, can separate and the discharge gas backstreaming of discharging and the tightness system that intercepts extraneous air simultaneously are installed on the air intake passage or exhaust-duct of vacuum pump apparatus from adsorption bed preventing.
Also have, according to the present invention, gas supply device can be with flow and concentration by the gas delivery of flow rate control device control to object space.A flow rate control device is installed on the passage, is used for pilot-gas to discharge by adsorption bed, and another flow rate control device is installed on another passage, is used for supplying not the mixed gas by adsorption bed.
[beneficial effect]
As mentioned above, in the equipment that under vacuum pressure, moves according to the VSA program, because by the connection section of simplifying and the dwindle valvegear size reduction of assigning to, the present invention can effectively improve economy and mechanical efficiency, and can be applicable in the small household appliances equipment, valvegear wherein is the device that comes the switch passage according to the present invention and wherein contain the adsorption bed of sorbent material.
In addition, because valve actuator and adsorption bed container are integrated into single structure, therefore the present invention has improved equipment hardness, reduced equipment size by integrating adsorption bed and valve, and by making the equipment modularized that only needs to connect pumping unit and other control device reduce manufacturing cost, thereby has economic benefit.
The present invention be advantageous in that because even gas concentrator when not using sorbent material also sealed fully, thereby can be for a long time with the sorbent material keeping in adsorption bed.
Description of drawings
Fig. 1 is the gas concentrator synoptic diagram according to the PSA program of prior art;
Fig. 2 is the gas concentrator synoptic diagram according to the VSA program of prior art;
Fig. 3 is the first embodiment synoptic diagram according to VSA program gas concentrator of the present invention;
Fig. 4 is the frontview that is applied to according to the valvegear of VSA program gas concentrator of the present invention;
Fig. 5 is the front cross-section view that is applied to according to the electromagnetic coil drive of VSA program gas concentrator of the present invention;
Fig. 6 is the front cross-section view that is applied to according to the valvegear of VSA program gas concentrator of the present invention;
Fig. 7 is applied to the skeleton view of valvegear that VSA program according to the present invention has the gas concentrator of the adsorption bed that is incorporated into valvegear;
Fig. 8 is for being used for the second embodiment synoptic diagram of the gas concentrator of VSA program according to the present invention;
Fig. 9 is the front cross-sectional view that is applied to according to the vacuum breaker of VSA program gas concentrator of the present invention.
Embodiment
Below, describe the present invention with reference to the accompanying drawings in detail.
Fig. 3 is the first embodiment synoptic diagram according to VSA program gas concentrator of the present invention; Fig. 4 is the frontview that is applied to according to the valvegear of VSA program gas concentrator of the present invention; Fig. 5 is the front cross-section view that is applied to according to the electromagnetic coil drive of VSA program gas concentrator of the present invention; Fig. 6 is the front cross-section view that is applied to according to the valvegear of VSA program gas concentrator of the present invention; Fig. 7 is applied to the skeleton view of valvegear that VSA program according to the present invention has the gas concentrator of the adsorption bed that is incorporated into valvegear.
The present invention is applied in the specific embodiments shown in above-mentioned each figure.The invention is not restricted to this specific embodiments, in the scope that does not depart from technical spirit of the present invention, can carry out various modifications.
See the elementary operation of the gas concentrator of the present invention that is shown in Fig. 3 earlier, at first, vacuum pump apparatus 4 forms vacuum pressure in adsorption bed 1, and flows through after the strainer 3 under the action of pressure of mixed gas between mixed gas and vacuum pressure, flows into adsorption bed 1 through valvegear 2.
The gas of the adsorbents adsorb specific components in the adsorption bed 1, then, other component gas less or that be not adsorbed sucks and is sprayed onto object space (targetspace) by gas supply device 7 through vacuum breaker 6 and flow rate control device 10.Usually, when adsorption bed 1 was in the production phase, other adsorption bed 1 ' can carry out recycling process.In this recycling process, a part generates gas and moves to adsorption bed 1 ' by bed connection tubule (bed connecting small pipe) 5, thereby cleans adsorption bed and the program that applies vacuum pressure.Adsorption bed connects tubule 5 and be used as equilibrium valve (equilibrium valve) in industrial circle, or design forms the simple passage that connects between the adsorption bed 1 and 1 '.
The flow and the concentration of flow rate control device 9 and 10 decision supply gas.The mixed gas that flows through strainer 3 suitably can be mixed with the gas that flows through flow rate control device 9 as required, as in the oxygen concentrator that is applied to as air freshener devices.Have three or the multibed system of a plurality of adsorption bed 1 and 1 ' be used for industrial circle, and the system with two adsorption beds is mainly used in small sized applications.
In addition, be installed in pair of check valves 6 on the gas exhaust channel of adsorption bed 1 and 1 ' and 6 ' function for to make adsorption bed 1 and 1 ' content desorption by vacuum pump apparatus 4.When forming vacuum pressure, the vacuum breaker identical with 1 ' quantity with adsorption bed 1 is as the device that prevents to reflux from gas supply device 7.
As shown in Figure 4, simplify adsorption bed 1 and 1 ' assembling, can realize in the gas concentrator of the present invention that valvegear 2 ' that small-sized gas concentrator assembling is simplified is applied to move as mentioned above by VSA software modularized.
Valvegear 2 ' comprises the channel base (channel base) 14 of monomer, and it is formed with and is used for adsorption bed 1,1 ' connection portion 21,21 ' and as the strainer connection portion 20 of mixed gas service duct; A pair of electromagnetic coil drive (solenoid drivers) 12 and 13, it is installed in and is used for switch in the channel base 14 and is formed on passage in the channel base 14, with alternate supplies vacuum pressure and mixture pressure on adsorption bed 1 and 1 '.
Be used for electromagnetic coil drive 12 of the present invention and 13, the power operation that it is usually used under the vacuum pressure comprises only by power-actuated direct effect type.As shown in Figure 5, the same with the common electrical magnetic coil, each electromagnetic coil drive 12 and 13 comprises the framework 15 that supports whole driving mechanism, and the coil 16 of motivating force is provided when electric current flows through, have the piston 17 of switching function and the conduit 18 of guiding piston 17 by to-and-fro movement.Unshowned spring applies power to piston 17 under standard state, open or closing condition thereby maintaining valve device 2 ' is in.
In addition, the pump connection portion 19 that is formed on electromagnetic coil drive 12 and 13 is interconnection by the passage connection portion 11 that is connected to gas concentrator vacuum pump apparatus 4 of the present invention shown in Figure 4.The strainer connection portion 20 of channel base 14 is connected on the strainer 3 of filtration and supply mixed gas.Bed connection portion 21 and 21 ' is connected respectively to the end of adsorption bed 1 and 1 '.
Then, the adsorption bed 1 and 1 ' that is connected to a connection portion 21 and the 21 ' switching function that holds vacuum pressure that vacuum pump apparatus causes and the piston 17 by being shown in Fig. 5 selectively puts on the mixture pressure of strainer connection portion 20.
Provide the coil 16 of motivating force to exercise the opening and closing function when as mentioned above, piston 17 flows through by electric current.As shown in Figure 6, when the piston 17 on the left of scheming moved down a connection portion 21 and passage connection portion 11 are interconnected, right hand piston 17 ' moved up and a connection portion 21 ' and pipe strainer connection portion 20 is interconnected.
Be designed to monomeric valvegear 2 ' as mentioned above and can be connected to adsorption bed 1 and 1 ' by bed connection portion 21 and 21 '.Yet in order to simplify configuration, preferred (preferred) with the element one-body molded (formed integrally) of valvegear 2 ' with adsorption bed 1 and 1 ', and by electromagnetic coil drive 12 and 13 direct insertions are wherein assembled.
That is, each adsorption bed 1 and 1 ' of the present invention disposes cylindrical vessel, and its inside is filled with sorbent material and its two ends are sealed by the cap that forms the connection portion.Thereby, channel base 14 can be integrated into the form of the adsorption bed cap (adsorption bed cap) that connects the adsorption bed two ends, and wherein said channel base 14 is formed with and is used to install electromagnetic coil drive 12 and 13 and as the mounting portion of the strainer connection portion 20 of mixed gas service duct.
That is as shown in Figure 7, because bed connection portion 21 and 21 ' extension make it to be inserted in adsorption bed 1 and 1 ', so adsorption bed 1 and 1 ' is connected (cap attaching) mode by cap and is connected with the channel base 14 of valvegear 2 '.In addition, because channel base 14 is formed with the mounting portion (mounting portion) that electromagnetic coil drive 12 and 13 can be installed thereon, so channel base 14 is directly connected to electromagnetic coil drive 12 and 13.In addition, because the strainer connection portion 20 of supply mixed gas also is formed on the side with the channel base 14 of cap mode of connection, so channel base 14 is directly connected to strainer 3.
The running relation of valvegear 2 ' of the present invention shown in Figure 6, the rubber seal and the spring that wherein are used for the contact part place use of open and close passage omit.With respect to the magnetic valve that high pressure operates down, the vacuum pressure magnetic valve of running down can low-costly be made, and this is can be made by rubber effectively because of switch sections, thereby does not need precision sizing.Therefore, compare with the situation of using multibed type system and rotary valve, its assembling and economical efficiency can improve further.
In addition, it is evident that for a person skilled in the art: the method that electromagnetic coil drive 12 of the present invention and 13 is installed to the mounting portion of channel base 14, and the present embodiment, can join electromagnetic coil drive 12 and 13 each different piece of channel base 14 to each different directions.In addition, though used two pump connection portions 19 in the present embodiment, pump connection portion 19 can be by using flexible pipe or independently injection model product such as passage connection portion 11 combine.
Simultaneously, when gas concentrator of the present invention is not worked and is in idle state, the sorbent material in the adsorption bed 1 and 1 ' should be fully and extraneous air isolate to prevent its performance degradation.Yet in the known techniques shown in Fig. 1 and 2, sorbent material communicates with suction filter through valvegear 2 through vacuum breaker 6,6 ' and gas supply device 7 and exterior, by vacuum pump apparatus 4 through valvegear 2 and exterior.
When the vacuum breaker 6 that uses hermetically sealed type and 6 ', adsorption bed 1 and 1 ' production platform side (producingstage side) and external isolation, and under the situation of using the vacuum breaker 6 made by the ordinary rubber film, can reveal and 6 ', adsorption bed 1 and 1 ' production platform side can be by gas supply device 7 and external isolation.Usually, a vacuum pump or a gas blower (blower) can be used as gas supply device 7, and it provides a simple vacuum breaker (checkvalve).
Yet when this simple vacuum breaker fully during closed type, the sorbent material in the adsorption bed 1 and 1 ' can be influenced, therefore should use the full seal type vacuum breaker.
In addition, under the situation of conventional gas concentrator, single 4 channel valve or two 3 channel valve can be used as valvegear 2.Adsorption bed 1 and 1 ' can be connected respectively to the vacuum pump apparatus 4 of strainer 3 and 4 channel valve, and adsorption bed 1 and 1 ' also can be connected to the vacuum pump apparatus 4 of strainer 3 and 3 channel valve selectively.
Therefore, when filtering and the strainer 3 of supply mixed gas and adsorption bed 1 and 1 ' are interconnection and when communicating with each other, should comprise hygroscopic agent (moisture adsorbent) etc. in strainer 3, with the absorption agent (adsorbent) of protection adsorption bed 1 and 1 '.Yet the function of hygroscopic agent is limited.In addition, though, vacuum breaker is housed makes it also have sealing effectiveness, when occurring revealing, also need alternative method in vacuum pump apparatus 4 if sealing effectiveness is not good as in gas supply device 7.
Fig. 8 is for being used for the second embodiment synoptic diagram of the gas concentrator of VSA program according to the present invention.
Shown in Fig. 3 and 8, gas concentrator of the present invention has tightness system 23,24 and 24 '.Even general magnetic valve can be used as tightness system 23,24 and 24 ', also preferred (preferred) simple and cheap vacuum breaker.That is, all vacuum breaker 6 of the passage of adsorption bed 1 and 1 ' emission gases and 6 ' and the vacuum breaker of vacuum pump apparatus 4 hypothesis that takes place to reveal under can use tightness system 23,24 and 24 '.Like this, if the sealing of the vacuum breaker in the present device 6 and 6 ' is no problem, or the running of the vacuum breaker in the vacuum pump apparatus 4 is normal, can remove tightness system 23,24 and 24 ' selectively so.
That is in embodiments of the invention, the strainer 3 of filtration and supply mixed gas can use valvegear 2 ' to isolate.Usually, when mounting equipment, vacuum breaker 6 and 6 ' can be assembled hermetically.Yet, in the situation of vacuum pump apparatus 4, because this equipment is to dispose according to pump characteristics, it may cause revealing, therefore tightness system 24 and 24 ' can be installed on the suction passage and exhaust channel of vacuum pump apparatus 4, and tightness system 23 can be installed on the gas exhaust channel, this gas drains into flow rate control device 10 through vacuum breaker 6 and 6 ' from adsorption bed 1 and 1 '.
Here, the state running down that each tightness system 23,24 and 24 ' keeps vacuum pressure at adsorption bed 1 and 1 ' pressure, its function is with adsorption bed 1 and 1 ' and the extraneous air isolation.When using general solenoid valve, running is once stopping and isolating at once.Like this, because unfavorable on Financial cost, so the preferred general check valve of using, it operates under the very little pressure in embodiments of the invention.That is, vacuum breaker as tightness system 24 should be designed to: when vacuum pumping unit 4 forms vacuum pressure in adsorption bed 1 and 1 ' during equipment operates, vacuum breaker reduces friction as far as possible, and running stop the back by the vacuum pressure that puts on adsorption bed 1 and 1 ' smoothly (smoothly) close.When producing loss of vacuum pressure, can further tightness system 24 ' be installed near exhaust side, to overcome loss of vacuum pressure owing to tightness system 24.Reason is that loss of vacuum pressure can greatly influence gas concentrator of the present invention.Therefore, can preferably tightness system be installed, thereby make the influence that causes by the pressure-losses less at exhaust side.
In addition, be installed in the tightness system 23 on the pipeline that gas discharges from adsorption bed 1 and 1 ', more can comprise vacuum breaker, this vacuum breaker for example comprises TR thin rubber film and spring, it is smoothly closed by the vacuum pressure that puts on adsorption bed 1 and 1 ' under the running halted state, thereby and make friction reduce to minimum when process gas, on gas supply device 7, do not apply burden.
Therefore, if the running of gas concentrator stops, because tightness system 23,24 and 24 ' operates automatically and seal by the residual vacuum pressure in adsorption bed 1 and 1 ', thereby make adsorption bed 1 and 1 ' and the extraneous air isolation, thereby the deterioration of sorbent material can not take place.In addition, during operating, vacuum pump apparatus 4 and gas supply device 7 are almost no problem on the running performance.
Even when during as the valvegear 2 ' of gas concentrator of the present invention,, using extra tightness system to isolate in a side of strainer 3 so common 4 channel valve if optionally adsorption bed 1 and 1 ' is communicated with strainer 3.At this moment, owing to increased cost, so not preferred above-mentioned valve-type.
Simultaneously, when using tightness system 23,, therefore preferably replace vacuum breaker 6 and 6 ' with ductule (small pipes) 25 and 25 ' because vacuum breaker 6 and 6 ' is difficult to carry out sealing function.Fig. 8 of foregoing description institute reference shows the embodiment of this situation, and the vacuum breaker 6 and 6 ' that wherein is shown in Fig. 3 first embodiment is substituted by the ductule 25 with certain resistance to flow and 25 '.Here, adsorption bed 1 and 1 ' vacuum pressure are decided to be maximum by the resistance to flow of ductule 25 and 25 ', and because the ductule 25 and 25 ' of alternative vacuum breaker 6 and 6 ' has been installed, be used for being connected ductule 5 to what adsorption bed 1 and 1 ' applied vacuum pressure and cleaning bed so can omit.
Fig. 9 illustrates the embodiment of vacuum breaker, wherein can be by vacuum breaker 6 of the present invention and 6 ' and do not use tightness system 23 to be sealed fully separately.The difference of this vacuum breaker and conventional check valves is sealing air-lock (sealing damper) 29 is installed on the end of backflow preventing mouth plug (check plunger) 27, it moves in the outer catheter 26 of vacuum breaker, and by implement sealing in the power of standard state lower spring 28.
In addition, in the drawings, the gas of arrow indication air-flow flows into backflow preventing mouth plug 27 by the hole that is formed in the backflow preventing mouth plug 27, and flows out through spring 28.So check valve configuration has been improved the wearing quality of its sealing reliability and continuous reciprocating vacuum breaker.
As mentioned above, since the present invention make by valvegear 2 ', adsorption bed 1 and 1 ', bed are connected ductule 5, vacuum breaker 6 and 6 ' and the control device 9 and 10 modular adsorption bed module of incompatible formation that joins become possibility, in reality is made, can directly operate by connecting gas supply device 7, vacuum pump apparatus 4 and strainer 3, simplify and cost effective device and form.
Simultaneously, Fig. 2 formerly is used for the synoptic diagram of the gas concentrator of VSA program among the Korean Utility Model Application No.2003-25957 of prerequisite Shen for the applicant.With reference to figure 2, the simple device of this gas concentrator and using gas separatory membrane is equally matched, and this gives the credit to by modularized of the adsorption bed 1 of simple channel design and 1 ' and the combination of valvegear 2 and adsorption bed 1 and 1 '.With the equipment of using gas separatory membrane relatively, its difference is to be connected to adsorption bed 1 and 1 ' valvegear 2, is connected adsorption bed 1 with 1 ' bed be connected ductule 5 and vacuum breaker 6 and 6 ', when other valvegear during then corresponding to each gas separation membrane.Thereby the maximum use of simplifying the valvegear 2 of configuration, with adsorption bed 1 and the 1 ' vacuum breaker of integrating 6 and 6 ' use and can simply assemble the configuration etc. that the bed of simplifying configuration is connected ductule 5 is the important factor that makes system minimizes and reduce cost.
When using sorbent material in as the gas concentrator at Fig. 2, because sorbent material is answered recirculation and is used for subsequently producing, therefore basically, the absorption meeting of fine impurity and moisture increases gradually, thus when running stops the moisture in the meeting absorbed air.In order to prevent this situation, can use hygroscopic agent etc., yet, because it is not basic solution, so needs are fully with the adsorption bed 1 of Fig. 2 and 1 ' and the isolated extra means of extraneous air.
Therefore, in the present invention, tightness system 24 and 24 ' is installed on the suction passage and exhaust channel of vacuum pump apparatus 4, and tightness system 23 is installed to process vacuum breaker 6 and 6 ' to drain on the gas exhaust channel of flow rate control device 10 from adsorption bed 1 and 1 ', make and both made when running stops, all can with adsorption bed 1 and 1 ' and extraneous air isolate fully, prevent minute impurities and moisture in the absorbed air.
Claims (10)
1. gas concentrator, by to the specific gas in the mixed gas, it is poor that the sorbent material with selective adsorption characteristic is exerted pressure, and separate this specific gas and produce concentrated gas, comprising:
One strainer is in order to filter out impurity from mixed gas;
A plurality of adsorption beds, it contains and is used for from through separating the sorbent material of specific gas the mixed gas of strainer supply, and those adsorption beds and be included in a formed back-flow preventer on the passage that can flow out divided gas flow;
One ductule is used for the passage of production phase of adsorption bed is interconnected, to clean adsorption bed and vacuum pressure is applied to program on the adsorption bed;
One vacuum pump apparatus, it is connected to the passage that is used for to adsorption bed supply mixed gas, and this vacuum pump apparatus can generate by the caused pressure difference of the difference between vacuum pressure and the mixture pressure;
One valvegear, the channel base and most electromagnetic coil drives that comprise a unit body, wherein this channel base is formed with and is connected respectively to adsorption bed, the passage of supply mixed gas, the passage of vacuum pump apparatus, and those electromagnetic coil drives are installed on the channel base, being used for open and close is formed on those passages on the channel base, with alternately to the electromagnetic coil drive of adsorption bed supply vacuum pressure and mixture pressure; And
One gas supply device is used for controllably supplying the mixed gas that comes from strainer to the gas that is separated and produced by adsorption bed, and subsequently to an object space supply gas flow and all controllable gas of concentration.
2. the described gas concentrator of claim 1, wherein this channel base at the unit body that is formed with those passages is formed with the mounting portion that is used for installing electromagnetic coil drive, the bed connection portion and the passage connection portion that is connected the passage of supplying mixed gas that connects adsorption bed.
3. the described gas concentrator of claim 2, wherein electromagnetic coil drive comprises the framework that supports whole driving mechanism; Be installed in the coil that power is provided by the electric current supply in the framework; Come the piston of open and close passage by to-and-fro movement by the power of coil; The conduit of guiding piston; And extend to supravasal pumping unit connection portion.
4. each described gas concentrator among the claim 1-3, wherein adsorption bed is inserted and joined to channel base by the cap mode of connection.
5. each described gas concentrator among the claim 1-3 wherein is formed on and discharges the low discharge that back-flow preventer on each passage of divided gas flow comprises vacuum breaker or have a resistance to flow from adsorption bed and subtract the stream pipe.
6. the described gas concentrator of claim 5, wherein vacuum breaker comprises the outer catheter that is formed on the passage; Insert the backflow preventing mouth plug that outer catheter and its body are formed with passage; Be connected the sealing air-lock on the backflow preventing mouth plug, so that closely contact with the outer catheter inlet of gas inflow part; And the support spring that is positioned at the outer catheter outlet of vent gas body portion, to support vacuum breaker.
7. the described gas concentrator of claim 1, wherein tightness system is installed on the passage, and tightness system is used for preventing separating and the discharge gas backstreaming of discharging, and intercepting extraneous air simultaneously from adsorption bed.
8. the described gas concentrator of claim 1, the tightness system that wherein is used for intercepting extraneous air is installed on the air intake passage or exhaust-duct of vacuum pump apparatus.
9. claim 7 or 8 described gas concentrators, wherein said tightness system is a check valve-type.
10. each described gas concentrator among the claim 1-3, wherein said gas supply device is to the object space supply gas, its gas flow and concentration system control by the flow rate control device that is installed on the passage, wherein a flow rate control device in order to control by adsorption bed institute expellant gas flow, and another flow rate control device in order to supply the mixed gas by adsorption bed not.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR20-2003-0010750U KR200320213Y1 (en) | 2003-04-09 | 2003-04-09 | Apparatus for automatically receving monitor for vehicles |
| KR2020030025957 | 2003-08-12 | ||
| KR20-2003-0025957U KR200333774Y1 (en) | 2003-08-12 | 2003-08-12 | Gas Concentrator |
| KR2020030028577 | 2003-09-05 | ||
| KR2020030028982 | 2003-09-09 | ||
| KR1020030063901 | 2003-09-16 | ||
| KR10-2003-0063901A KR100520039B1 (en) | 2003-09-16 | 2003-09-16 | Gas Concentrator |
| KR20-2003-0031606U KR200342502Y1 (en) | 2003-10-08 | 2003-10-08 | Apparatus for automatically receving monitor for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1697682A true CN1697682A (en) | 2005-11-16 |
Family
ID=35350092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200480000636 Pending CN1697682A (en) | 2003-04-09 | 2004-06-08 | Gas concentrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1697682A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103349807A (en) * | 2007-11-15 | 2013-10-16 | 帝人制药株式会社 | Oxygen concentrator |
| CN103657334A (en) * | 2007-04-20 | 2014-03-26 | 英瓦卡尔公司 | Product gas concentrator and method associated therewith |
| US9694311B2 (en) | 2012-03-09 | 2017-07-04 | Invacare Corporation | System and method for concentrating gas |
| US11915570B2 (en) | 2020-07-16 | 2024-02-27 | Ventec Life Systems, Inc. | System and method for concentrating gas |
| US11931689B2 (en) | 2020-07-16 | 2024-03-19 | Ventec Life Systems, Inc. | System and method for concentrating gas |
-
2004
- 2004-06-08 CN CN 200480000636 patent/CN1697682A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10010696B2 (en) | 2005-10-25 | 2018-07-03 | Invacare Corportion | Product gas concentrator and method associated therewith |
| CN103657334A (en) * | 2007-04-20 | 2014-03-26 | 英瓦卡尔公司 | Product gas concentrator and method associated therewith |
| CN103657334B (en) * | 2007-04-20 | 2016-03-09 | 英瓦卡尔公司 | Product gas inspissator and correlation technique thereof |
| CN103349807A (en) * | 2007-11-15 | 2013-10-16 | 帝人制药株式会社 | Oxygen concentrator |
| CN103349807B (en) * | 2007-11-15 | 2016-01-06 | 帝人制药株式会社 | Oxygen concentrating device |
| US9694311B2 (en) | 2012-03-09 | 2017-07-04 | Invacare Corporation | System and method for concentrating gas |
| US10300427B2 (en) | 2012-03-09 | 2019-05-28 | Invacare Corporation | System and method for concentrating gas |
| US11915570B2 (en) | 2020-07-16 | 2024-02-27 | Ventec Life Systems, Inc. | System and method for concentrating gas |
| US11931689B2 (en) | 2020-07-16 | 2024-03-19 | Ventec Life Systems, Inc. | System and method for concentrating gas |
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