CN104486898A - Plasma generator, refrigerator and control method thereof - Google Patents
Plasma generator, refrigerator and control method thereof Download PDFInfo
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- CN104486898A CN104486898A CN201410619620.3A CN201410619620A CN104486898A CN 104486898 A CN104486898 A CN 104486898A CN 201410619620 A CN201410619620 A CN 201410619620A CN 104486898 A CN104486898 A CN 104486898A
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- plasma generator
- refrigerator
- refrigerating
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Abstract
The invention discloses a plasma generator, a refrigerator and a control method thereof, relates to the refrigeration equipment technology field and solves a problem of poor sterilization effect of refrigerators in the prior art. The plasma generator comprises a plasma generation device and an electrode arranged at a discharging end of the plasma generation device, wherein the electrode comprises a cylinder-shaped structure prepared by a conduction material and a discharging needle arranged in the cylinder-shaped structure, the cylinder-shaped structure and the discharging needle are respectively connected with the plasma generation device to form an electric field between the cylinder-shaped structure and the discharging needle. The invention further provides the refrigerator having the plasma generator and the control method thereof. According to the plasma generator, the cylinder-shaped structure is additionally arranged outside the discharging needle, the cylinder-shaped structure and the discharging needle are respectively connected with the plasma generation device to form the electric field between the cylinder-shaped structure and the discharging needle, so bacteria and large granule dusts can be absorbed even without the action of a circulation fan, and thereby sterilization and air purification in the refrigerator can be realized.
Description
Technical field
The present invention relates to technical field of refrigeration equipment, particularly relate to a kind of plasma generator, have the control method of the refrigerator of this plasma generator and this refrigerator.
Background technology
Current domestic refrigerator mainly carries out fresh-keeping by low temperature to food, but low temperature only can reduce the reproduction speed of microbe, can not solve food spoilage and food-safety problem that food causes because of microbial contamination in storage.Research finds, along with the time lengthening of preserving food, food surface can breed the harmful bacterias such as Escherichia coli, staphylococcus aureus, salmonella, mould.And fruits and vegetables class in storing process because corruption can produce the smell substance of trimethylamine, methyl mercaptan, owing to there are residues of pesticides, there is certain hidden danger to food security in the vegetables of putting into cold compartment of refrigerator.
Sterilization technology such as antibacterial material filtration sterilization, photo-catalytic sterilization etc. that current various refrigerator businessmans propose can only carry out contact sterilization, and this kind of sterilization technology can not sterilization to positions such as inner container of icebox, shelf, fruit and vegetable boxes, has some limitations.And there is the defects such as life cycle is short in antibacterial material sterilization.
For solving the problem, propose a kind of refrigerator with plasma generator, harmful bacteria can effectively adsorb and utilize corona discharge to be killed by plasma generator, but plasma can only carry out sterilization by localized region, if go for good bactericidal effect, need to coordinate circulating fan to use, mounting structure more complicated.
Summary of the invention
An object of the present invention is to propose a kind ofly to eliminate the unusual smell fall the plasma generator of the residual function of agriculture without the need to coordinating circulating fan can realize comprehensively killing.
Another object of the present invention proposes the effective plasma generator of a kind of circulating air.
Another object of the present invention proposes the refrigerator that a kind of structure is simple, bactericidal effect is good.
Also object of the present invention be propose a kind of can according to the controlling method for refrigerator of user's use habit Based Intelligent Control plasma generator work.
For reaching this object, on the one hand, the present invention is by the following technical solutions:
A kind of plasma generator, comprise plasma generator and be arranged at the electrode of described plasma generator discharge end, described electrode comprises the tubular structure be made up of electric conducting material and the spray point be arranged in described tubular structure, and described tubular structure and described spray point are connected to form electric field between described tubular structure and described spray point with described plasma generator respectively.
Preferably, the sidewall of described tubular structure has multiple through hole.
Preferably, one end of described tubular structure is provided with installed surface, and described spray point is installed on described installed surface, and described installed surface has multiple through hole.
Preferably, described spray point is positioned at the middle part of described tubular structure and runs through described tubular structure, and the two ends of described spray point are supported in the both ends open place of described tubular structure by supporting construction.
Preferably, described plasma generator comprises the DC/AC change-over circuit, drive circuit, step-up transformer and the high-voltage control circuit that connect successively, and described high-voltage control circuit connects described tubular structure and described spray point respectively.
On the other hand, the present invention is by the following technical solutions:
A kind of refrigerator, comprise refrigerating chamber and master control borad, be provided with above-mentioned plasma generator in described refrigerating chamber, described plasma generator is connected with described master control borad.
Preferably, be provided with the position transducer for responding to described refrigerating-chamber door switch between the casing of described refrigerating chamber and refrigerating-chamber door, described position transducer is connected with described master control borad.
Preferably, described refrigerator also has the indicator light being used to indicate described plasma generator and whether working.
Again on the one hand, the present invention is by the following technical solutions:
A kind of control method of above-mentioned refrigerator, after plasma sterilization pattern opened by refrigerator, first described master control borad controls to open described plasma generator, after described plasma generator ran for first scheduled time, described master control borad controls described plasma generator according to the refrigeration work state of refrigerator and opens or close.
Preferably, described control method comprises the following steps:
Steps A, after plasma sterilization pattern opened by refrigerator, described master control borad controls to open described plasma generator and also ran for first scheduled time;
Step B, described master control borad detect the opening and closing of refrigerating-chamber door by position transducer, if refrigerating-chamber door is opened, and operating procedure C, if refrigerating-chamber door is closed, operating procedure D;
Whether plasma generator described in step C, described master control borad controlling run also detects refrigerating-chamber door and closes, if refrigerating-chamber door is not closed, then continues to run described plasma generator, if refrigerating-chamber door is closed, then and operating procedure D;
Whether step D, described master control borad detect refrigerator and are freezing, if so, then plasma generator described in controlling run, otherwise close described plasma generator and jump to steps A.
Preferably, when going to step D by step C, if described master control borad detects that refrigerator does not freeze, described master control borad controls described plasma generator and closes after second scheduled time.
Beneficial effect of the present invention is:
The electrode of plasma generator provided by the invention comprises the tubular structure be made up of electric conducting material and the spray point be arranged in tubular structure, tubular structure is connected with plasma generator respectively with spray point, thus electric field is formed between tubular structure and spray point, bacterium and oarse-grained dust also can be adsorbed, to reach the effect of air in sterilization and cleaning refrigerator by the effect therefore even without circulating fan.
Refrigerator provided by the invention, owing to having above-mentioned plasma generator, without the need to arranging the effect that circulating fan can reach sterilization and purify air, simplifying the structure, reducing cost.
First controlling method for refrigerator provided by the invention for run a period of time by plasma generator, comprehensively killing is carried out in refrigerator, then master control borad controls the refrigeration demand synchronous operation of plasma generator with refrigerator, and also run plasma generator when sensing that refrigerating-chamber door is opened, reach good bactericidal effect while achieving Based Intelligent Control.
Accompanying drawing explanation
Fig. 1 is the structural representation of the plasma generator that the embodiment of the present invention one provides;
Fig. 2 is the structural representation of the electrode of the plasma generator that the embodiment of the present invention one provides;
Fig. 3 is the circuit connection diagram of the plasma generator that the embodiment of the present invention one provides;
Fig. 4 is the structural representation of the another kind of version electrode of plasma generator that the embodiment of the present invention one provides;
Fig. 5 is the structural representation of the electrode of the plasma generator that the embodiment of the present invention two provides;
Fig. 6 is the structural representation of the refrigerator that the embodiment of the present invention three provides;
Fig. 7 is the structural representation of the refrigerator that the embodiment of the present invention four provides.
In figure, 1, plasma generator; 11, plasma generator; 111, DC/AC change-over circuit; 112, drive circuit; 113, step-up transformer; 114, high-voltage control circuit; 12, electrode; 121, tubular structure; 122, spray point; 123, installed surface; 124, through hole; 125, supporting construction; 126; Crossbeam; 2, fan guard; 21, air inlet; 22, air outlet; 3, circulating fan; 4, refrigerating chamber; 41, casing; 42, refrigerating-chamber door; 43, air channel; 44, air inlet; 5, indicator light.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment one:
Present embodiments provide a kind of plasma generator, this plasma generator comprises plasma generator 11 and is arranged at the electrode 12 of plasma generator 11 discharge end as shown in Figure 1.
As shown in Figure 2, electrode 12 comprises the tubular structure 121 be made up of electric conducting material and the spray point 122 be arranged in tubular structure 121, tubular structure 121 is connected with plasma generator 11 respectively with spray point 122, thus electric field is formed between tubular structure 121 and spray point 122, produce suction, bacterium and oarse-grained dust also can be adsorbed, to reach the effect of air in sterilization and cleaning refrigerator by the effect therefore even without circulating fan.In addition, this electric field can also form plasma wind, and it has the following advantages: 1, plasma wind can carry out automatic cycle when not having external fan to the air of refrigerating chamber.Decrease now because a lot of ion generator just must can reach the drawback of fresh-keeping effect by external fan; 2, plasma wind is rich in electronics and multiple anion isoreactivity material, and result of the test shows the existence all can experiencing plasma wind at distance cylinder 20cm place, and test effect is obvious; 3, in the electric field formed at tubular structure and spray point, produce high-speed ion penetration effect, these negative ions can penetrate the cell membrane of bacterium porous, destroy cell electrolyte, and infringement cell membrane, causes cell death.In the process that plasma produces in addition, spray point can produce ultraviolet light, and this high energy UV is absorbed by nucleic acid such as DNA of bacteria thus plays bactericidal action.In addition produce a large amount of active ion in electromerism as free radical, ozone etc. can play bactericidal action with the large biological molecule generation redox reaction of bacterium.One end of tubular structure 121 is provided with installed surface 123, is arranged on by spray point 122 on this installed surface 123.The concrete diameter of tubular structure 121 can set according to the refrigerator volume of its installation.
As shown in Figure 3, plasma generator 11 comprises the DC/AC change-over circuit 111, drive circuit 112, step-up transformer 113 and the high-voltage control circuit 114 that connect successively, the tubular structure 121 of high-voltage control circuit 114 difference connecting electrode 12 and spray point 122.DC/AC change-over circuit 111 is for carrying out power conversion, the direct current of input is become ac square wave pulse and exports to drive circuit 112, drive circuit 112 drives step-up transformer 113 pairs of electric currents boost and export to tubular structure 121 and spray point 122 respectively by high-voltage control circuit 114.Wherein, the number of primary turns of step-up transformer 113 is 30, and secondary winding turns is about 800, and output high pressure is 3000V.
In order to promote the circulation of air, multiple through hole 124 can be opened on the sidewall of tubular structure 121, installed surface 123 also can offer multiple through hole 124, considerably increase the chance of air circulation like this, good refreshing effect.Wherein, the through hole 124 be opened on installed surface 123 is two circles, and through hole 124 diameter of outer ring is greater than through hole 124 diameter of inner ring.
Tubular structure 121 can select stainless steel, can reduce the corrosion of ozone to electrode, effectively extends its useful life.
In addition, electrode is not limited to said structure, also as shown in Figure 4 mounting panel can be replaced with the crossbeam 126 being fixed on tubular structure 121 end, spray point 122 is fixed on crossbeam 126, like this can the circulation area of enlargement gas further, the effect improving plasma generator sterilization and purify air.
Embodiment two:
Present embodiments provide a kind of plasma generator, its structure is substantially identical with embodiment one, comprises plasma generator and is arranged at the electrode of plasma generator discharge end.As shown in Figure 5, electrode comprises the tubular structure 121 be made up of electric conducting material and the spray point 122 be arranged in tubular structure 121, tubular structure 121 is connected with plasma generator 11 respectively with spray point 122, thus forms electric field between tubular structure 121 and spray point 122.
Difference is, the spray point 122 in the present embodiment is positioned at the middle part of tubular structure 121 and runs through tubular structure 121, and the both ends open that the two ends of spray point 122 are supported in tubular structure 121 by supporting construction 125 goes out.Supporting construction 125 is fixed on tubular structure 121.
In addition, if above-mentioned plasma generator is installed in wind cooling refrigerator, plasma generator all can carry out specific customization according to the structure of refrigerator, or is placed in tuyere position, or be placed in position of fan, the bore of tubular structure can carry out special matched according to the diameter of fan.
Embodiment three:
Present embodiments provide a kind of direct cooling refrigerator, comprise refrigerating chamber and master control borad, as shown in Figure 6, the plasma generator 1 as described in embodiment one is installed in refrigerating chamber 4.Plasma generator 1 is connected with master control borad.The outside of plasma generator 1 is covered with fan guard 2, circulating fan 3 is installed in fan guard 2, fan guard 3 has air inlet 21 and air outlet 22, air inlet 21 is arranged near plasma generator 1, air outlet 22 is arranged away from plasma generator 1, makes circulating fan 3 by the air circulation of other positions in refrigerating chamber to plasma generator 1 place.Realized refrigerating chamber 4 inner air sterilization by plasma generator 1 but not be only contact sterilization, avoid the limitation in sterilization region, simultaneously, the degraded to putting into remains of pesticide on fruits and vegetables in cold compartment of refrigerator 4 can be realized, result of the test shows, the present embodiment plasma generator 1 is very remarkable to commercially available three kinds of agricultural chemicals (organic phosphates, carbamates, chrysanthemum ester class) degradation effect.Remarkable to the bacteria-eliminating efficacy of common pathogen Escherichia coli and staphylococcus aureus in refrigerator.
Between the casing 41 and refrigerating-chamber door 42 of refrigerating chamber 4, be provided with the position transducer (not shown) for responding to refrigerating-chamber door 42 switch, position transducer is connected with master control borad.
A kind of control method of above-mentioned direct cooling refrigerator is proposed simultaneously.The concrete steps of the method are:
Steps A, after plasma sterilization pattern opened by refrigerator, master control borad controls to open plasma generator 1 and circulating fan 3, and starts timing, after plasma generator 1 ran for first scheduled time, go to step B, in the present embodiment, first scheduled time was 24 hours;
Step B, master control borad detect the opening and closing of refrigerating-chamber door 42 by position transducer, if refrigerating-chamber door 42 is opened, and operating procedure C, if refrigerating-chamber door 42 is closed, operating procedure D;
Step C, master control borad controlling run plasma generator 1 and circulating fan 3, sterilizing is carried out to the air entered due to enabling in casing 41, and detect refrigerating-chamber door 42 and whether close, if refrigerating-chamber door 42 is not closed, then continue to run plasma generator 1 and circulating fan 3, if refrigerating-chamber door 42 is closed, then operating procedure D;
Whether step D, master control borad detect refrigerator and are freezing, if so, then controlling run plasma generator 1 and circulating fan 3, otherwise close plasma generator 1 and jump to steps A.
First plasma generator is run a period of time by this control method, thus carry out comprehensively killing in refrigerating chamber casing, then master control borad controls the refrigeration demand synchronous operation of plasma generator with refrigerator, and also run plasma generator when sensing that refrigerating-chamber door is opened, reach good bactericidal effect while achieving Based Intelligent Control.
In addition, the present embodiment refrigerator is also provided with the indicator light 5 being used to indicate plasma generator 1 and whether working, this indicator light 5 is connected with master control borad, when plasma generator 1 runs, it is bright that master control borad controls indicator light 5, and when plasma generator 1 cuts out, master control borad controls indicator light 5 and goes out.User can know the operating state of plasma generator 1 easily by viewing lamp 5.
Wherein, first scheduled time was not limited to 24 hours, can set according to the volume capacity of refrigerating chamber and actual demand.Also can not arrange circulating fan, the suction produced by the electrode self of plasma generator is adsorbed bacterium and big dust particle.In addition, also plasma generator can not be closed immediately after refrigerating-chamber door is opened and closed when position transducer detects, treat that plasma generator continues operation second scheduled time again, close after sterilization abundant in refrigerating chamber, second scheduled time was preferably 5 to 15 minutes again.
Embodiment four:
Present embodiments provide a kind of wind cooling refrigerator, comprise refrigerating chamber and master control borad, as shown in Figure 7, refrigerating chamber 4 offers air inlet 44, plasma generator 1 as described in embodiment two is installed in the air channel 43 of refrigerating chamber, plasma generator 1 is near air inlet 44 and be arranged in parallel with air inlet 44, the size of plasma generator 1 electrode and the size of air inlet 44 suitable, make the wind entered in refrigerating chamber 4 all can carry out sterilizing through the tubular structure of electrode.Air is entered by air inlet 44 and enters in tubular structure through the through hole 124 of plasma generator 1 electrode 12 and carries out sterilizing, then enters in refrigerating chamber through air channel 43.Other structures and embodiment two similar, do not repeat them here.
The control method of this wind cooling refrigerator is also similar with embodiment two, and only the switch controlling compressor is replaced with the switch of wind cooling refrigerator air door, other are all identical, also repeat no more.
Below know-why of the present invention is described in conjunction with specific embodiments.These describe just in order to explain principle of the present invention, and can not be interpreted as limiting the scope of the invention by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present invention, and these modes all will fall within protection scope of the present invention.
Claims (10)
1. a plasma generator, comprise plasma generator (11) and be arranged at the electrode (12) of described plasma generator (11) discharge end, it is characterized in that: described electrode (12) comprises the tubular structure (121) be made up of electric conducting material and the spray point (122) be arranged in described tubular structure (121), described tubular structure (121) and described spray point (122) are connected to form electric field between described tubular structure (121) and described spray point (122) with described plasma generator (11) respectively.
2. a kind of plasma generator according to claim 1, is characterized in that: the sidewall of described tubular structure (121) has multiple through hole (124).
3. a kind of plasma generator according to claim 1 and 2, it is characterized in that: one end of described tubular structure (121) is provided with installed surface (123), described spray point (122) is installed on described installed surface (123), described installed surface (123) has multiple through hole (124).
4. a kind of plasma generator according to claim 2, it is characterized in that: described spray point (122) is positioned at the middle part of described tubular structure (121) and runs through described tubular structure (121), the two ends of described spray point (122) are supported in the both ends open place of described tubular structure (121) by supporting construction (125).
5. a kind of plasma generator according to claim 1, it is characterized in that: described plasma generator (11) comprises the DC/AC change-over circuit (111), drive circuit (112), step-up transformer (113) and the high-voltage control circuit (114) that connect successively, and described high-voltage control circuit (114) connects described tubular structure (121) and described spray point (122) respectively.
6. a refrigerator, comprise refrigerating chamber (4) and master control borad, it is characterized in that: be provided with the plasma generator (1) as described in any one of claim 1 to 5 in described refrigerating chamber (4), described plasma generator (1) is connected with described master control borad.
7. a kind of refrigerator according to claim 6, it is characterized in that: be provided with the position transducer for responding to described refrigerating-chamber door (42) switch between the casing (41) of described refrigerating chamber (4) and refrigerating-chamber door (42), described position transducer is connected with described master control borad.
8. the control method of a refrigerator as described in any one of claim 5 to 7, it is characterized in that: after plasma sterilization pattern opened by refrigerator, first described master control borad controls to open described plasma generator (1), after described plasma generator (1) ran for first scheduled time, described master control borad controls described plasma generator (1) according to the refrigeration work state of refrigerator and opens or close.
9. the control method of a kind of refrigerator according to claim 8, is characterized in that, described control method comprises the following steps:
Steps A, after plasma sterilization pattern opened by refrigerator, described master control borad controls to open described plasma generator (1) and also ran for first scheduled time;
Step B, described master control borad detect the opening and closing of refrigerating-chamber door (42) by position transducer, if refrigerating-chamber door (42) is opened, and operating procedure C, if refrigerating-chamber door (42) is closed, operating procedure D;
Whether plasma generator (1) described in step C, described master control borad controlling run also detects refrigerating-chamber door (42) and closes, if refrigerating-chamber door (42) is not closed, then continue to run described plasma generator (1), if refrigerating-chamber door (42) is closed, then operating procedure D;
Whether step D, described master control borad detect refrigerator and are freezing, if so, then plasma generator described in controlling run (1), otherwise close described plasma generator (1) and jump to steps A.
10. the control method of a kind of refrigerator according to claim 9, it is characterized in that: when going to step D by step C, if described master control borad detects that refrigerator does not freeze, described master control borad controls described plasma generator (1) and closes after second scheduled time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410619620.3A CN104486898A (en) | 2014-11-05 | 2014-11-05 | Plasma generator, refrigerator and control method thereof |
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| CN201410619620.3A CN104486898A (en) | 2014-11-05 | 2014-11-05 | Plasma generator, refrigerator and control method thereof |
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| CN201410619620.3A Pending CN104486898A (en) | 2014-11-05 | 2014-11-05 | Plasma generator, refrigerator and control method thereof |
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| WO2018161746A1 (en) * | 2017-03-08 | 2018-09-13 | 余铭 | Device and system for generating low frequency alternating electric field, and signal conditioning method |
| WO2018161745A1 (en) * | 2017-03-08 | 2018-09-13 | 浙江驰力科技股份有限公司 | Device and system for generating low frequency alternating electric field, and signal conditioning method |
| CN110081649A (en) * | 2018-01-26 | 2019-08-02 | 夏普株式会社 | Refrigerator |
| CN111380292A (en) * | 2018-12-28 | 2020-07-07 | 青岛海尔股份有限公司 | Air-cooled refrigerator and sterilization method thereof |
| WO2023138268A1 (en) * | 2022-01-21 | 2023-07-27 | 澳柯玛股份有限公司 | Refrigerator and refrigerator air duct purification system |
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Application publication date: 20150401 |