CN202547246U - Sterilization and preservation refrigerator - Google Patents
Sterilization and preservation refrigerator Download PDFInfo
- Publication number
- CN202547246U CN202547246U CN2012201542386U CN201220154238U CN202547246U CN 202547246 U CN202547246 U CN 202547246U CN 2012201542386 U CN2012201542386 U CN 2012201542386U CN 201220154238 U CN201220154238 U CN 201220154238U CN 202547246 U CN202547246 U CN 202547246U
- Authority
- CN
- China
- Prior art keywords
- fresh
- filter screen
- refrigerator
- sterilization
- keeping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
- F25D2317/0417—Treating air flowing to refrigeration compartments by purification using an UV-lamp
Abstract
The utility model discloses a sterilization and preservation refrigerator, which comprises an air duct and a control unit. An air duct opening is formed in the air duct. A preservation filter screen is arranged on one side of the air duct opening, and is coated with a nanometer coating. An ultraviolet light-emitting diode (LED) lamp is also arranged in the air duct, and is connected with the control unit, and the projection direction of the ultraviolet LED lamp faces the preservation filter screen. According to the sterilization and preservation refrigerator, the preservation filter screen is matched with the ultraviolet LED lamp, harmful microorganisms can be firstly adsorbed, and then are irradiated and killed by the ultraviolet LED lamp, and simultaneously, the preservation filter screen coated with the nanometer coating has catalytic action on harmful gas molecules, so that the harmful gas molecules are degraded to generate harmless gases, so as to facilitate the preservation of foods in the refrigerator and the purification of circulating air in the refrigerator; and the cost is lowered, and simultaneously, an aim of sterilization is maximally fulfilled.
Description
Technical field
The utility model relates to a kind of refrigerator with sterilization fresh-keeping function, belongs to the refrigerator technical field.
Background technology
Along with refrigerator popularizing in the family, a lot of convenience have been brought to daily life, still; Refrigerator is not the ground of the absolute safe storage of food, the food of especially depositing at refrigerating chamber, and having deposited for a long time still can be corrupt; Find after deliberation, have harmful mushrooms such as Escherichia coli, mould of some in the refrigerator, and food spoilage can be decomposed chemical gas such as producing ethene, sulfide; For kill bacteria and mould, people are applied in ultraviolet sterilization on the refrigerator at present, and ultraviolet lamp also promptly is set in refrigerator; Irradiation-sterilize is carried out in space in the refrigerator, and the shortcoming of this kind set-up mode is: directly ultraviolet lamp is arranged in the refrigerator, has no shelter; When the user opens refrigerator doors, can directly receive the ultraviolet ray irradiation or receive the ultraviolet ray irradiation that reflection is come out, unfavorable to health; And now cold compartment of refrigerator is divided into the multilayer storage space, and storage spacer plate that sets within it or storage tank are known from experience influence the ultraviolet irradiation effect, causes the bactericidal effect thoroughly perhaps can only local bactericidal.
Passing through of also having is provided with independent sterilizing unit, comprises housing, and ultraviolet lamp is arranged in the housing; Blower fan is set simultaneously, and forced-air circulation can prevent effectively that ultraviolet ray from leaking; Reach sterilization effects simultaneously, yet this apparatus structure is complicated, blower fan need be set separately; Increase the cost of device, be unfavorable for improving the market competitiveness of refrigerator.
Based on this, a kind of refrigerator of utility model how with sterilization fresh-keeping function, safety, environmental protection, bactericidal effect is good, and cost is low, is the problem that the utility model mainly solves.
The utility model content
The utility model provides a kind of sterilization fresh-keeping refrigerator in order to solve the problem that the current refrigerator bactericidal effect is bad, the sterilization cost is high, and bactericidal effect is good, and cost is low.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme to be achieved:
A kind of sterilization fresh-keeping refrigerator; Comprise air channel and control module; Said air channel is provided with wind passage mouth, is provided with fresh-keeping filter screen in said wind passage mouth one side, and said fresh-keeping filter screen scribbles nano coating; In the air channel, also be provided with the ultraviolet LED lamp of projecting direction towards fresh-keeping filter screen, said ultraviolet LED lamp is connected with control module.
Further, because the sterilizing ability that ultraviolet ray had of different wave length is different, in the utility model; Through strict experimental demonstration; Wavelength is that the ultraviolet sterilization ability of 280nm is the strongest, and therefore, it is 280nm that the utility model preferably adopts the wavelength of said ultraviolet LED lamp.
Preferably, said ultraviolet LED lamp is 5cm to the distance of fresh-keeping filter screen.
Because described wind passage mouth comprises return air inlet and air outlet, in order to reach in the refrigerator in the air circulation process of circulation the thoroughly purpose of purification and sterilization, described fresh-keeping filter screen preferably is arranged on return air inlet one side.
Materials such as the fresh-keeping filter screen that scribbles nano coating can particle-bound bacteria, ethene, sulfide; The ultraviolet illumination that ultraviolet ray LED lamp sends is mapped on the fresh-keeping filter screen; Can killing bacteria, nano coating has catalytic action for chemical gas molecules such as ethene, sulfide simultaneously; Materials such as the ethene in can catalytic air, sulfide; Its degraded is produced innocuous gas,, said ultraviolet LED lamp is positioned at fresh-keeping filter screen in the upright projection of fresh-keeping filter screen center is set preferably in order to increase the area that ultraviolet LED shines fresh-keeping filter screen.
In order to point out user's ultraviolet ray LED lamp to open, work, preferred described sterilization fresh-keeping refrigerator also is provided with the sterilization indicator lamp that is connected with control module, and said sterilization indicator lamp is arranged on the box inside of refrigerator, perhaps is arranged on the panel of refrigerator.The user sees sterilization indicator lamp flicker, knows that just ultraviolet LED lamp works, and closing refrigerator door or temporarily do not open refrigerator doors to prevent to receive the ultraviolet irradiation of small leakage, has further ensured personal safety as early as possible.
Compared with prior art; The advantage and the good effect of the utility model are: the sterilization fresh-keeping refrigerator of the utility model is used fresh-keeping filter screen and ultraviolet LED lamp, at first harmful microorganism is adhered to, and is shone by ultraviolet LED lamp and kills; The fresh-keeping filter screen that scribbles nano coating simultaneously has catalytic action to the pernicious gas molecule; Degraded produces innocuous gas, helps the fresh-keeping of the interior food of refrigerator, the cleaning refrigerator inner circulating air.In addition, fresh-keeping filter screen and ultraviolet LED lamp are arranged in the air channel, utilize the cyclic process of cold air that air is purified; Need not to be provided with separately the blower fan of forced-air circulation; Effectively reduce cost, and, if fresh-keeping filter screen and ultraviolet LED lamp be arranged on the words of return air inlet one side; Only need two above-mentioned devices respectively to adopt one, just can reach the purpose of air in the maximum cleaning refrigerator.
After the detailed description in conjunction with advantages the utility model embodiment, other characteristics of the utility model and advantage will become clearer.
Description of drawings
Fig. 1 is a kind of example structure sketch map of a kind of sterilization fresh-keeping refrigerator of proposing of the utility model;
Fig. 2 is the partial structurtes sketch map in air channel 1 among Fig. 1.
The specific embodiment
To the present problem that the refrigerator bactericidal effect is bad and the sterilizing unit cost is high; A kind of sterilization fresh-keeping refrigerator is provided, through scribbling the fresh-keeping filter screen of nano coating, and the ultraviolet LED lamp of projecting direction towards fresh-keeping filter screen has been set in the air channel in wind passage mouth one side setting; Utilize circulating cold air process in the refrigerator; Gas in the refrigerator has been carried out sterilization and purification, simple in structure, reached bactericidal effect preferably when reducing cost.
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done explanation in further detail.
Embodiment one, and the sterilization fresh-keeping refrigerator of present embodiment is referring to shown in Figure 1; For the present embodiment refrigerator and be arranged at the easy structure sketch map in air channel in it, comprise air channel 1 and control module (showing among Fig. 1), referring to shown in Figure 2; Be the partial structurtes sketch map in air channel 1, said air channel 1 is provided with wind passage mouth 2, is provided with fresh-keeping filter screen 3 in a side of said wind passage mouth 2; Said fresh-keeping filter screen 3 scribbles nano coating, in air channel 1, also is provided with the ultraviolet LED lamp 4 of projecting direction towards fresh-keeping filter screen 3, and said ultraviolet LED lamp 4 is connected with control module; Control the unlatching of ultraviolet LED lamp or close by control module; Wherein, control module can also can be the control module that is provided with separately for controlling the control module of whole refrigerator work operation.
Generally under regular situation; The wind passage mouth of refrigerator comprises return air inlet and air outlet, and in the utility model, fresh-keeping filter screen 3 can be arranged on return air inlet one side; Also can be arranged on air outlet one side; And more refrigerator air duct mouth has a return air inlet and a plurality of air outlet, just can reach in the refrigerator in the air circulation process of circulation the thoroughly purpose of purification and sterilization for minimum filter screen and ultraviolet LED lamp can be set, and described fresh-keeping filter screen 3 preferably is arranged on return air inlet one side.
Can adhere to materials such as harmful microorganism, ethene, sulfide because scribble the fresh-keeping filter screen of nano coating; The ultraviolet illumination that ultraviolet ray LED lamp 4 sends is mapped on the fresh-keeping filter screen 3; Can killing bacteria; Nano coating has catalytic action for chemical gas molecules such as ethene, sulfide simultaneously, and its accelerated decomposition is produced innocuous gas; In order to increase the area that ultraviolet LED shines fresh-keeping filter screen 3, said ultraviolet LED lamp 4 is positioned at fresh-keeping filter screen 3 in the upright projection of fresh-keeping filter screen 3 center is set preferably.
What the public was known at present is: ultraviolet ray is a kind of of sunray, is the general name of electromagnetic spectrum medium wavelength from 10nm to the 400nm radiation.According to the difference of self wavelength of ultraviolet ray, can with ultraviolet ray be divided into long wave ultraviolet (315～400nm, UV-A), ultraviolet B radiation (280～315nm, UV-B), short wave ultraviolet (200～280nm, UV-C), vacuum ultraviolet (100～200nm, UV-C).The wavelength that is used for ultraviolet disinfection is 250～320nm, yet in the utility model, through testing and verification, the wavelength that the ultraviolet disinfection ability is the strongest is 280nm.Present embodiment provides the different wave length ultraviolet germicidal lamp to bacterial propagule and brood cell's killing effect laboratory report, as follows:
(1) experiment material
1. bacterial classification: Escherichia coli 8099, staphylococcus albus 8032 3-14 generation 18～24 hours plain agar slant cultures, wash with 0.3MPBS (calling PBS in the following text), process 10
7The bacterial suspension of/ml concentration.Withered grass bacterium black mutation brood cell ATCC9372 brood cell liquid, the time spent is 10 with the PBS dilution
7/ ml concentration.
2. ultraviolet lamp A: wavelength 320nm, ultraviolet lamp B: wavelength 250nm, ultraviolet lamp B: wavelength 280nm, power 30W, radiation intensity is 110 μ m/cm
2
3. carrier: sterility cover slide (1.5 * 1.5/cm
2).
(2) experimental technique
The surface sterilization test:
Draw different bacterium liquid with micropipet, drip on aseptic slide every 0.02ml respectively.Put oven dry in 30 minutes in 37 ℃ of incubators.To dry the microbiological contamination slide and place aseptic plate to cover, and place following 1 meter of ultraviolet lamp A, ultraviolet lamp B and ultraviolet lamp C lamp, and carry out vertical irradiation in required time, be contrast with the normal recovery bacterium sheet that does not shine simultaneously.Indoor temperature and relative humidity during the record test.After test finishes, collect experimental group and normal group and reclaim contrast bacterium sheet, put into 5ml PBS respectively, after fully beaing (80 times), carry out count plate.Average kill ratio is calculated in test repetition five times at last.
(3) test data and interpretation of result
Room temperature: 28 ℃; Relative humidity: 66%
Two kinds of ultraviolet germicidal lamps are seen table 1 to bacterial propagule and brood cell's killing effect.
Table 1
Can find out from result of the test: wavelength is that the uviol lamp of 320nm does not have bactericidal effect basically to bacterial propagule and brood cell; Though being the ultraviolet lamp of 250nm, wavelength has certain germicidal efficacy; But effect is undesirable; And the time that the uviol lamp kill vegetative forms of bacteria of wavelength 280nm reaches qualified (sterilizing rate 99.9%) is 2 minutes, and killing fine bacterium brood cell, to reach the qualified time be 10 minutes.
(4) conclusion analysis
The wavelength that is used for ultraviolet disinfection is generally the ultraviolet ray of 250～320nm, and that sterilization power is the strongest is 280nm.Wavelength 280nm ultraviolet ray can penetrate the cells of microorganisms film, destroys nucleic acid (DNA) structure, in dna molecular, produces pyrimidine dimer, causes sudden change, makes the loss of activity of cytogenetics material, causes microorganism to lose fertility or death.Belong to long wave ultraviolet and wavelength is 320nm and the longer ultraviolet ray of wavelength, penetration power is relatively poor, does not have bactericidal effect basically.On the other hand, because wavelength 280nm ultraviolet energy makes airborne oxygen be ionized into [O], make O again
2Oxidation generates ozone (O
3) or make water (H
2O) oxidation generates hydrogen peroxide (H
2O
2).O
3And H
2O
2Bactericidal action is all arranged.Therefore short wave ultraviolet is widely used in the disinfection of health care, food, processing and some industrial circles at present.
Therefore, because the sterilizing ability that ultraviolet ray had of different wave length is different, in the utility model; Through above-mentioned strict experimental demonstration; Wavelength is that the ultraviolet sterilization ability of 280nm is the strongest, and therefore, it is 280nm that the utility model preferably adopts the wavelength of said ultraviolet LED lamp.
Open, work in order to point out user's ultraviolet ray LED lamp; Referring to shown in Figure 1; Preferred described sterilization fresh-keeping refrigerator also is provided with the sterilization indicator lamp 5 that is connected with control module, and said sterilization indicator lamp can be arranged on the box inside of refrigerator, perhaps is arranged on the panel of refrigerator.The user sees sterilization indicator lamp flicker, knows that just ultraviolet LED lamp works, and increases human-computer interaction, and closing refrigerator door or temporarily do not open refrigerator doors to prevent to receive the ultraviolet irradiation of small leakage, has further ensured personal safety as early as possible.
Because ultraviolet ray is decay gradually in communication process; Even if adopt the LED lamp of the best 280nm wavelength of bactericidal effect, different to the distance of fresh-keeping filter screen according to ultraviolet LED lamp, its bactericidal effect is also different; Therefore ultraviolet LED lamp is not random setting to the distance of fresh-keeping filter screen; How to reach a best bactericidal effect, the demonstration that need make an experiment provides the another one Test Example below:
(1) experiment material
1. Escherichia coli suspension:,, also be diluted to about 3000/ml through the blood counting chamber microscopic counting with sterilized water academic title suspension with Escherichia coli actication of culture 24 hours;
2. single naked core LED of deep ultraviolet (280nm), under the 20mA operating current, power output 0.8mW.
(2) experiment is handled
The surface sterilization test:
Get the 0.100ml bacteria suspension respectively and use colony counting method; Be applied on the plating medium; Carry out the irradiation-sterilize of different time and different distance with deep ultraviolet LED and handle, the assay method according to total number of bacteria in the solution carries out the cultivation of bacterium and the counting of total number of bacteria then.
(3) testing result
Room temperature: 18 ℃
Relative humidity: 50%
Deep ultraviolet LED sees table 2 to the colibacillary result of the test of killing.
Table 2
Can find out from result of the test: for Escherichia coli, at irradiation distance 10cm, in the irradiation time 40s, irradiation distance whenever dwindles 1/2, and bactericidal effect becomes original 4 times, and when irradiation distance was 1cm, irradiation time 20s sterilizing rate can reach 100%.
(4) conclusion analysis
For wavelength is the ultraviolet LED of 280mm, the irradiation position decision sterilization speed of lamp, at short notice; If the irradiation position of uviol lamp is original 1/2, sterilization effect is original more than 4 times so, and is certainly neither ultraviolet LED lamp good more closely more to the distance of fresh-keeping filter screen; Need consider the effective sterilization area of ultraviolet LED light irradiation to fresh-keeping filter screen, because ultraviolet LED lamp is near more to the distance of fresh-keeping filter screen, effectively the sterilization area is more little; Therefore; Comprehensive above factor considers, this implements preferred ultraviolet LED lamp is in the 5cm to the optimum distance of fresh-keeping filter screen, preferably 5cm.
The sterilization fresh-keeping refrigerator of present embodiment is through being used fresh-keeping filter screen and ultraviolet LED lamp; At first harmful microorganism is shone by ultraviolet LED lamp and kills attached on the fresh-keeping filter screen, and the fresh-keeping filter screen that scribbles nano coating simultaneously has catalytic action to the pernicious gas molecule; Can quicken catalytic decomposition and fall in the air ethene that fruit is had dematuration; And quicken catalytic decomposition and fall poisonous sulfide gas, help the fresh-keeping of the interior food of refrigerator, the cleaning refrigerator inner circulating air.In addition, fresh-keeping filter screen and ultraviolet LED lamp are arranged in the air channel, utilize the cyclic process of cold air that air is purified, need not to be provided with separately the blower fan of forced-air circulation, effectively reduce cost.The wavelength that ultraviolet LED lamp is set is 280nm, has stronger bactericidal effect.And, if fresh-keeping filter screen and ultraviolet LED lamp are arranged on return air inlet one side, only need to adopt a fresh-keeping filter screen and a ultraviolet LED lamp, just can reach the purpose of air in the maximum cleaning refrigerator.
Certainly; Above-mentioned explanation is not to be the restriction to the utility model; The utility model also be not limited in above-mentioned for example, variation, remodeling, interpolation or replacement that those skilled in the art are made in the essential scope of the utility model also should belong to the protection domain of the utility model.
Claims (6)
1. sterilization fresh-keeping refrigerator; Comprise air channel and control module; Said air channel is provided with wind passage mouth, it is characterized in that: be provided with fresh-keeping filter screen in said wind passage mouth one side, said fresh-keeping filter screen scribbles nano coating; In the air channel, also be provided with the ultraviolet LED lamp of projecting direction towards fresh-keeping filter screen, said ultraviolet LED lamp is connected with control module.
2. sterilization fresh-keeping refrigerator according to claim 1 is characterized in that: the wavelength of said ultraviolet LED lamp is 280nm.
3. sterilization fresh-keeping refrigerator according to claim 1 and 2 is characterized in that: described wind passage mouth comprises return air inlet and air outlet, and described fresh-keeping filter screen is arranged on return air inlet one side.
4. sterilization fresh-keeping refrigerator according to claim 3 is characterized in that: said ultraviolet LED lamp is positioned at the center of fresh-keeping filter screen in the upright projection of fresh-keeping filter screen.
5. sterilization fresh-keeping refrigerator according to claim 4 is characterized in that: said ultraviolet LED lamp is 5cm to the distance of fresh-keeping filter screen.
6. sterilization fresh-keeping refrigerator according to claim 1 and 2 is characterized in that: described sterilization fresh-keeping refrigerator also is provided with the sterilization indicator lamp that is connected with control module, and said sterilization indicator lamp is arranged in the casing of refrigerator, perhaps is arranged on the panel of refrigerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201542386U CN202547246U (en) | 2012-04-13 | 2012-04-13 | Sterilization and preservation refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201542386U CN202547246U (en) | 2012-04-13 | 2012-04-13 | Sterilization and preservation refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN202547246U true CN202547246U (en) | 2012-11-21 |
Family
ID=47167866
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201542386U Expired - Lifetime CN202547246U (en) | 2012-04-13 | 2012-04-13 | Sterilization and preservation refrigerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375961A (en) * | 2012-04-13 | 2013-10-30 | 海尔集团公司 | Refrigerator with sterilizing and keeping fresh functions |
| US10046073B2 (en) | 2010-06-01 | 2018-08-14 | Bluemorph, Llc | Portable UV devices, systems and methods of use and manufacturing |
| US11260138B2 (en) | 2010-06-01 | 2022-03-01 | Bluemorph, Llc | UV sterilization of container, room, space or defined environment |
-
2012
- 2012-04-13 CN CN2012201542386U patent/CN202547246U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10046073B2 (en) | 2010-06-01 | 2018-08-14 | Bluemorph, Llc | Portable UV devices, systems and methods of use and manufacturing |
| US10603394B2 (en) | 2010-06-01 | 2020-03-31 | Bluemorph, Llc | UV sterilization of container, room, space or defined environment |
| US11040121B2 (en) | 2010-06-01 | 2021-06-22 | Bluemorph, Llc | UV sterilization of container, room, space or defined environment |
| US11260138B2 (en) | 2010-06-01 | 2022-03-01 | Bluemorph, Llc | UV sterilization of container, room, space or defined environment |
| CN103375961A (en) * | 2012-04-13 | 2013-10-30 | 海尔集团公司 | Refrigerator with sterilizing and keeping fresh functions |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121121 |