JP2003287353A - Refrigerator having photocatalyst filter - Google Patents
Refrigerator having photocatalyst filterInfo
- Publication number
- JP2003287353A JP2003287353A JP2002089418A JP2002089418A JP2003287353A JP 2003287353 A JP2003287353 A JP 2003287353A JP 2002089418 A JP2002089418 A JP 2002089418A JP 2002089418 A JP2002089418 A JP 2002089418A JP 2003287353 A JP2003287353 A JP 2003287353A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerator
- photocatalyst
- ultraviolet
- ultraviolet rays
- filter
- 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.)
- Granted
Links
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 77
- 239000002344 surface layer Substances 0.000 claims abstract description 40
- 239000003054 catalyst Substances 0.000 claims abstract description 26
- 238000009423 ventilation Methods 0.000 claims abstract description 23
- 230000001699 photocatalysis Effects 0.000 claims description 44
- 230000003647 oxidation Effects 0.000 claims description 27
- 238000007254 oxidation reaction Methods 0.000 claims description 27
- 239000003463 adsorbent Substances 0.000 claims description 22
- 230000005855 radiation Effects 0.000 claims description 21
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 14
- 229910021536 Zeolite Inorganic materials 0.000 claims description 13
- 239000010457 zeolite Substances 0.000 claims description 13
- 230000002209 hydrophobic effect Effects 0.000 claims description 9
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 claims description 5
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052794 bromium Inorganic materials 0.000 claims description 5
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 claims description 4
- 229910052740 iodine Inorganic materials 0.000 claims description 4
- 239000011630 iodine Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000004332 deodorization Methods 0.000 abstract description 8
- 230000001954 sterilising effect Effects 0.000 abstract description 4
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 12
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000011230 binding agent Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 230000001877 deodorizing effect Effects 0.000 description 7
- WQOXQRCZOLPYPM-UHFFFAOYSA-N dimethyl disulfide Chemical compound CSSC WQOXQRCZOLPYPM-UHFFFAOYSA-N 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 4
- 229910000480 nickel oxide Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 2
- 239000003375 plant hormone Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 239000004113 Sepiolite Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052586 apatite Inorganic materials 0.000 description 1
- 229910000416 bismuth oxide Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229930002875 chlorophyll Natural products 0.000 description 1
- 235000019804 chlorophyll Nutrition 0.000 description 1
- ATNHDLDRLWWWCB-AENOIHSZSA-M chlorophyll a Chemical compound C1([C@@H](C(=O)OC)C(=O)C2=C3C)=C2N2C3=CC(C(CC)=C3C)=[N+]4C3=CC3=C(C=C)C(C)=C5N3[Mg-2]42[N+]2=C1[C@@H](CCC(=O)OC\C=C(/C)CCC[C@H](C)CCC[C@H](C)CCCC(C)C)[C@H](C)C2=C5 ATNHDLDRLWWWCB-AENOIHSZSA-M 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- DGAHKUBUPHJKDE-UHFFFAOYSA-N indium lead Chemical compound [In].[Pb] DGAHKUBUPHJKDE-UHFFFAOYSA-N 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical compound [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Catalysts (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は光触媒フィルタを備
えた冷蔵庫に関するものであり、さらに詳しくは脱臭性
や殺菌性に優れ、かつ消費電力を低減した光触媒フィル
タを備えた冷蔵庫に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator equipped with a photocatalytic filter, and more particularly to a refrigerator equipped with a photocatalytic filter which is excellent in deodorizing property and sterilizing property and which consumes less power.
【0002】[0002]
【従来の技術】紫外線ランプと光触媒を用いたフィルタ
を組み合わせてこのフィルタを通過する空気中の臭気成
分を分解して脱臭することが知られている。2. Description of the Related Art It is known that an ultraviolet lamp and a filter using a photocatalyst are combined to decompose and deodorize odorous components in the air passing through this filter.
【0003】図5に光触媒を用いたコルゲート型の通風
路が構成されたフィルタの1例を示す。このフィルタ1
は水平部分と波型部分とが交互に重なり合った段ボール
紙を積層したような構造を有する。このフィルタの表層
には活性炭などの吸着剤に光触媒を担持させたものが塗
布されたりまたは練り込んである。FIG. 5 shows an example of a filter having a corrugated air passage using a photocatalyst. This filter 1
Has a structure in which corrugated paper sheets in which horizontal portions and corrugated portions are alternately stacked are laminated. The surface layer of this filter is coated or kneaded with an adsorbent such as activated carbon carrying a photocatalyst.
【0004】図6に、紫外線ランプと前記フィルタを組
み合わせて空気中の臭気成分を分解して脱臭する装置の
例を示す。1、1は前記フィルタであり、通風路が空気
の流れに対して斜めに構成した際の断面を示している。
2は空気ダクトであり、フィルタ1、1が所定の間隔を
もって配置されている。3は紫外線ランプであり、フィ
ルタ1、1の間に配置されている。この紫外線ランプ3
は例えば360nm近傍の紫外線を放射する。この紫外
線ランプ3からの紫外線により、フィルタ1、1の光触
媒が活性化され、フィルタ1、1の通風路を通る空気中
の臭いの分子を分解して脱臭するようになっている。FIG. 6 shows an example of an apparatus which combines an ultraviolet lamp and the filter to decompose odorous components in the air to deodorize them. Reference numerals 1 and 1 denote the filters, and show cross-sections when the ventilation passage is formed obliquely to the air flow.
Reference numeral 2 is an air duct, and the filters 1 and 1 are arranged at a predetermined interval. 3 is an ultraviolet lamp, which is arranged between the filters 1 and 1. This UV lamp 3
Emits ultraviolet rays in the vicinity of 360 nm, for example. The photocatalyst of the filters 1 and 1 is activated by the ultraviolet rays from the ultraviolet lamp 3, and the odor molecules in the air passing through the ventilation passages of the filters 1 and 1 are decomposed and deodorized.
【0005】[0005]
【発明が解決しようとする課題】しかしこのランプは直
管型であるためフィルタの各部分まで距離に差が生じ、
つまり紫外線の照射強度にムラが発生するので、光触媒
の活性化が不十分な部分ができ脱臭効率が悪いという問
題があった。また、紫外線ランプによる紫外線照射を連
続して行うと紫外線ランプの寿命が低下したり、消費電
力が大きくなる問題があり、また紫外線の照射を停止し
たり間欠的に行うと、紫外線照射停止中は光触媒が活性
化されないため脱臭できないという問題があった。However, since this lamp is a straight tube type, there is a difference in the distance to each part of the filter,
That is, since the irradiation intensity of the ultraviolet rays is uneven, there is a problem that the photocatalyst is not sufficiently activated and deodorization efficiency is poor. Further, continuous irradiation of ultraviolet rays by the ultraviolet lamp causes a problem that the life of the ultraviolet lamp is shortened and power consumption increases, and when ultraviolet irradiation is stopped or intermittently performed, ultraviolet irradiation is stopped. Since the photocatalyst is not activated, there is a problem that it cannot be deodorized.
【0006】本発明の目的は、従来のこれらの問題を解
決し、紫外線の照射中は紫外線の照射強度ムラを抑えて
光触媒の活性化を均一にかつ十分に行って効率よく脱
臭、殺菌するとともに、紫外線の照射を停止したり間欠
的に行って紫外線照射を行わない間も脱臭できるように
した冷蔵庫を提供することである。The object of the present invention is to solve these conventional problems and to suppress the unevenness of the irradiation intensity of ultraviolet rays during the irradiation of ultraviolet rays to uniformly and sufficiently activate the photocatalyst to efficiently deodorize and sterilize. The object of the present invention is to provide a refrigerator capable of deodorizing even when UV irradiation is stopped or intermittently performed and UV irradiation is not performed.
【0007】[0007]
【課題を解決するための手段】本発明者等は、前記課題
を解決するために鋭意研究を重ねた結果、平面状の形状
を有する紫外線ランプを用いるとともに、光触媒フィル
タの紫外線が照射される側の表層に光触媒を配置し、光
触媒フィルタの紫外線が照射さない側の表層に庫内の雰
囲気において光触媒フィルタの通風路を通過する空気中
の臭い分子を酸化分解する機能を有する酸化触媒を配置
した光触媒フィルタを組み合わせて用いることにより課
題を解決できることを見いだし、本発明を完成するに至
った。Means for Solving the Problems The inventors of the present invention have conducted extensive studies to solve the above problems, and as a result, use an ultraviolet lamp having a planar shape and the side of the photocatalyst filter irradiated with ultraviolet rays. The photocatalyst is placed on the surface layer of the photocatalyst filter, and the oxidation catalyst having the function of oxidatively decomposing odorous molecules in the air passing through the ventilation passage of the photocatalyst filter in the atmosphere inside the chamber is placed on the surface layer on the side of the photocatalyst filter that is not exposed to ultraviolet rays. They have found that the problem can be solved by using a combination of photocatalytic filters, and completed the present invention.
【0008】前記課題を解決すための本発明の請求項1
記載の光触媒フィルタを備えた冷蔵庫は、前面に開閉自
在な扉を有し、内部に複数の棚を有して被冷却物を収納
可能にする庫内と、この庫内の空気を吸い込み冷却器で
冷却した後、前記庫内の上段の棚の上方側から前記庫内
に吐出させる風路と、この風路中に設けられ前記冷却さ
れた空気を強制的に前記庫内へ循環させる送風機とを備
えるとともに、前記風路中の前記冷却器の風上に設けら
れる平面状の紫外線放射ランプおよびこの紫外線放射ラ
ンプの照射範囲内にコルゲート型またはハニカム型の通
風路が構成された光触媒フィルタを設けた冷蔵庫であっ
て、前記光触媒フィルタの紫外線が照射される側の表層
に、紫外線照射により励起されて前記通風路を通過する
空気中の臭い分子を分解する機能を有する光触媒を配置
し、前記光触媒フィルタの紫外線が照射されない側の表
層に、前記庫内の雰囲気において前記通風路を通過する
空気中の臭い分子を分解する機能を有する酸化触媒を配
置したことを特徴とする。A first aspect of the present invention for solving the above problems.
A refrigerator provided with the photocatalyst filter described above has a door that can be opened and closed at the front and has a plurality of shelves inside to store an object to be cooled, and a cooler that sucks in the air in the refrigerator. After being cooled in, the air passage to be discharged into the inside from the upper side of the upper shelf of the inside, and the blower forcibly circulating the cooled air provided in the air passage into the inside A flat UV radiation lamp provided on the windward side of the cooler in the air duct and a photocatalytic filter having a corrugated or honeycomb ventilation channel provided in the irradiation range of the UV radiation lamp. In the refrigerator, a photocatalyst having a function of decomposing odorous molecules in the air that is excited by UV irradiation and passes through the ventilation path is disposed on the surface layer of the photocatalyst filter on the side where the UV irradiation is performed. F The surface layer on the side where the filter of ultraviolet is not irradiated, characterized in that a oxidation catalyst having the function of decomposing odor molecules in the air passing through the air passage in the atmosphere in the chamber.
【0009】本発明の請求項2記載の光触媒フィルタを
備えた冷蔵庫は、請求項1記載の冷蔵庫において、前記
光触媒および酸化触媒がSi:Al比が50以上の疎水
性ゼオライトからなる吸着剤に担持されていることを特
徴とする。A refrigerator provided with the photocatalytic filter according to claim 2 of the present invention is the refrigerator according to claim 1, wherein the photocatalyst and the oxidation catalyst are carried on an adsorbent made of a hydrophobic zeolite having a Si: Al ratio of 50 or more. It is characterized by being.
【0010】本発明の請求項3記載の光触媒フィルタを
備えた冷蔵庫は、請求項1あるいは請求項2記載の冷蔵
庫において、前記酸化触媒が臭素、ヨウ素から選ばれる
酸化触媒であることを特徴とする。A refrigerator equipped with the photocatalytic filter according to claim 3 of the present invention is characterized in that, in the refrigerator according to claim 1 or 2, the oxidation catalyst is an oxidation catalyst selected from bromine and iodine. .
【0011】本発明の請求項4記載の光触媒フィルタを
備えた冷蔵庫は、請求項1から請求項3のいずれかに記
載の冷蔵庫において、前記光触媒フィルタの紫外線が照
射される側の表層の色と、前記光触媒フィルタの紫外線
が照射されない側の表層の色とが異なることを特徴とす
る。A refrigerator provided with a photocatalytic filter according to claim 4 of the present invention is the refrigerator according to any one of claims 1 to 3, in which the color of the surface layer of the photocatalytic filter on the side irradiated with ultraviolet rays is The color of the surface layer of the photocatalytic filter on the side not irradiated with ultraviolet rays is different.
【0012】本発明の光触媒フィルタを備えた冷蔵庫
は、従来の直管型紫外線ランプを用いる代わりに平面状
の紫外線放射ランプを用いたので、フィルタの各部分ま
で距離がほぼ均等になり、光触媒に対する紫外線の照射
強度がほぼ均一になるので光触媒の活性化が均一で十分
となり脱臭効率や殺菌効率が向上する。さらに、本発明
の光触媒フィルタを備えた冷蔵庫は、光触媒フィルタの
紫外線が照射される側の表層に、紫外線照射により励起
されて光触媒フィルタの通風路を通過する空気中の臭い
分子を分解する機能を有する光触媒を配置し、光触媒フ
ィルタの紫外線が照射されない側の表層に、紫外線照射
がなくても前記庫内の雰囲気において前記通風路を通過
する空気中の臭い分子を分解する機能を有する酸化触媒
を配置した光触媒フィルタを備えたので、光触媒フィル
タの表層の裏表を有効に利用して、紫外線の照射中は勿
論のこと、紫外線の照射を停止したり間欠的に行って紫
外線照射を行わない間も脱臭でき、紫外線ランプの長寿
命化、消費電力の低減を図ることができる。Since the refrigerator provided with the photocatalytic filter of the present invention uses the flat UV radiation lamp instead of the conventional straight tube type UV lamp, the distances to the respective parts of the filter are substantially equalized, and the photocatalyst is not affected. Since the irradiation intensity of ultraviolet rays is almost uniform, the activation of the photocatalyst is uniform and sufficient, and the deodorizing efficiency and sterilizing efficiency are improved. Further, the refrigerator provided with the photocatalytic filter of the present invention has a function of decomposing odorous molecules in the air passing through the ventilation passage of the photocatalytic filter by being excited by the irradiation of ultraviolet rays on the surface layer on the side of the photocatalytic filter irradiated with ultraviolet rays. Arranging a photocatalyst having, on the surface layer of the photocatalyst filter not irradiated with ultraviolet rays, an oxidation catalyst having a function of decomposing odorous molecules in the air passing through the ventilation passage in the atmosphere in the refrigerator even without ultraviolet irradiation. With the photocatalyst filter arranged, the front and back of the surface layer of the photocatalyst filter can be used effectively, not only during UV irradiation but also during UV irradiation by stopping or intermittently performing UV irradiation. It is possible to deodorize, extend the life of the ultraviolet lamp, and reduce power consumption.
【0013】[0013]
【発明の実施の形態】本発明の実施の1形態を図1、
2、3を参照しつつ詳細に説明する。図1は、本発明の
光触媒フィルタを備えた冷蔵庫の冷蔵室部分の断面説明
図である。図2は、図1に示した本発明の冷蔵庫の背面
板の説明図であり、図3は、図2の一部拡大図である。BEST MODE FOR CARRYING OUT THE INVENTION One embodiment of the present invention is shown in FIG.
This will be described in detail with reference to a few. FIG. 1 is a cross-sectional explanatory view of a refrigerating compartment of a refrigerator equipped with the photocatalytic filter of the present invention. 2 is an explanatory view of the back plate of the refrigerator of the present invention shown in FIG. 1, and FIG. 3 is a partially enlarged view of FIG.
【0014】図において、10は家庭用冷蔵庫である。
この家庭用冷蔵庫10は、上から冷蔵室R(冷蔵温度帯
エリア)、野菜室冷蔵室V(冷蔵温度帯エリア)、冷凍
室(図示せず)の順で配置されている。この冷蔵庫10
は、少なくとも圧縮器、凝縮器、蒸発器からなる冷凍サ
イクルを有するものであり、蒸発器(エバ)を蒸発温度
を違えて2つ有し、2エバ・タイプと呼ばれるものであ
る。冷蔵温度帯エリア冷却用の冷蔵用の蒸発器(以下、
冷却器17という)と、冷凍温度帯エリア冷却用の冷凍
用の蒸発器(冷却器)(図示せず)とを備えている。In the figure, 10 is a household refrigerator.
This household refrigerator 10 is arranged in the order of a refrigerator compartment R (refrigerating temperature zone area), a vegetable compartment refrigerator compartment V (refrigerating temperature zone area), and a freezer compartment (not shown) from the top. This refrigerator 10
Has a refrigerating cycle including at least a compressor, a condenser, and an evaporator, and has two evaporators (evaporators) having different evaporation temperatures and is called a 2-evaporator type. Refrigerating evaporator for refrigerating temperature zone area cooling (hereinafter,
And a freezing evaporator (cooler) (not shown) for cooling the freezing temperature zone area.
【0015】庫内には複数の棚11を有して被冷却物を
収納可能にしている。12は外箱、13は内箱であり、
14はこの両者(12、13)間に発泡充填された断熱
材である。A plurality of shelves 11 are provided in the cabinet so that objects to be cooled can be stored. 12 is an outer box, 13 is an inner box,
Reference numeral 14 is a heat insulating material which is foam-filled between the both (12, 13).
【0016】15は家庭用冷蔵庫10の前面に備えられ
た冷蔵室用の開閉自在な回転扉であり、片側に設けた回
転軸を中心に開閉する。16は冷蔵室の背面板である。
この背面板16は冷蔵庫10の内箱13との間に冷蔵庫
内の空気を循環させる風路20を形成している。この風
路20中に冷蔵室用の冷却器17、冷蔵庫内の空気を循
環させるファン18、庫内灯19が設置されており、風
路20を通って冷却器17で冷却された冷気をファン1
8を介して庫内の上段の棚11の上方側から冷蔵室へ吐
出させる。Reference numeral 15 denotes a revolving door for the refrigerating room, which is provided on the front surface of the household refrigerator 10, and which opens and closes around a rotating shaft provided on one side. Reference numeral 16 is a back plate of the refrigerator compartment.
The rear plate 16 forms an air passage 20 for circulating the air in the refrigerator with the inner box 13 of the refrigerator 10. A cooler 17 for a refrigerating room, a fan 18 for circulating air in a refrigerator, and an interior lamp 19 are installed in the air passage 20, and the cool air cooled by the cooler 17 through the air passage 20 is fanned. 1
The liquid is discharged from the upper side of the upper shelf 11 in the refrigerator to the refrigerating chamber via 8.
【0017】21は、断熱材であり、背面板16の内箱
13側でファン18、冷却器17の低温の冷熱(冷気)
が冷蔵室に伝わるのを抑制している。Reference numeral 21 denotes a heat insulating material, which cools the fan 18 and the cooler 17 at a low temperature (cold air) on the inner box 13 side of the back plate 16.
Is being transmitted to the refrigerator compartment.
【0018】22は、除霜用のヒータであり、冷却器1
7を下方から加熱して冷却器17の除霜を行うものであ
る。23は、冷蔵室および野菜室を経た冷蔵室内の戻り
空気を冷却器17に循環するための風路20の一部を構
成する戻りダクトである。Reference numeral 22 is a defrosting heater, which is a cooler 1.
7 is heated from below to defrost the cooler 17. Reference numeral 23 is a return duct that constitutes a part of the air passage 20 for circulating the return air in the refrigerating compartment that passes through the refrigerating compartment and the vegetable compartment to the cooler 17.
【0019】24は、波長360nmの紫外線を照射す
る平面状の紫外線放射ランプであり、ここでは30mm
×150mmの平面形状である。そして、平面状の紫外
線放射ランプ24はダクト23内に紫外線を照射し、冷
蔵室側には可視光を照射するように背面板16にはめ込
まれている。なお、ダクト23内の紫外線照射範囲に
は、紫外線照射による内箱13の樹脂の変形や劣化を防
止するための図示しないアルミなどの紫外線を反射でき
る反射材を貼付しもよい。Reference numeral 24 is a flat ultraviolet radiation lamp that radiates ultraviolet rays having a wavelength of 360 nm, and here, is 30 mm.
It has a planar shape of 150 mm. The flat ultraviolet radiation lamp 24 is fitted into the rear plate 16 so that the duct 23 is irradiated with ultraviolet rays and the refrigerating compartment side is irradiated with visible light. It should be noted that a reflecting material such as aluminum (not shown) capable of reflecting ultraviolet rays may be attached to the ultraviolet ray irradiation range in the duct 23 to prevent deformation and deterioration of the resin of the inner box 13 due to ultraviolet ray irradiation.
【0020】なお本発明で光照射に用いる光源の光エネ
ルギーは、光触媒を励起させて、主として臭気成分の有
機物を分解する能力を持たせるものであり、すなわち光
触媒を励起させるのに対応した波長を有する光エネルギ
ーであって、可視波長ないし紫外波長を有する光を照射
するのが望ましい。このような光源としては、水銀灯よ
り発する光、ハロゲンランプ等のフィラメントランプよ
り生ずる光、ショートアークキャノン光、半導体レーザ
ー光線、紫外線ランプ、ブラックライト、蛍光燈(例え
ば、冷陰極蛍光ランプ)、青色LEDまたは紫外線LE
DなどのLED等の人工光源が挙げられる。これらは1
つ以上組み合わせて使用してもよい。The light energy of the light source used for light irradiation in the present invention has the ability to excite the photocatalyst to decompose mainly organic substances of odor components, that is, the wavelength corresponding to the photocatalyst is excited. It is desirable to irradiate light having a visible wavelength or an ultraviolet wavelength, which is the energy of light. Examples of such a light source include light emitted from a mercury lamp, light generated from a filament lamp such as a halogen lamp, short arc cannon light, a semiconductor laser beam, an ultraviolet lamp, a black light, a fluorescent lamp (for example, a cold cathode fluorescent lamp), a blue LED or UV LE
An artificial light source such as an LED such as D can be used. These are 1
You may use it in combination of 1 or more.
【0021】図2に背面板16と平面状の紫外線放射ラ
ンプ24を示す。このランプ24は光の照射面を通常の
ガラス(ソーダガラス)で形成しているが、光触媒フィ
ルタ25に対向している側の紫外線照射面24uvのみ
石英ガラスで形成している。したがって、その通過波長
特性により冷蔵室側の面24dからは通常の可視光線が
照射され、有害な紫外線は照射されず(有害な300n
m以下の紫外線を遮断する)、紫外線照射面24uvか
らは紫外線が照射されるようになっている。FIG. 2 shows the back plate 16 and the flat ultraviolet radiation lamp 24. The lamp 24 has a light irradiation surface made of normal glass (soda glass), but only the ultraviolet irradiation surface 24uv on the side facing the photocatalytic filter 25 is made of quartz glass. Therefore, due to the passing wavelength characteristic, normal visible light is emitted from the surface 24d on the refrigerating compartment side, and harmful ultraviolet rays are not emitted.
(UV rays of m or less are blocked), and ultraviolet rays are emitted from the ultraviolet ray irradiation surface 24uv.
【0022】25は、光触媒フィルタである。この光触
媒フィルタの紫外線が照射される側の表層Aには、後で
述べる疎水性ゼオライト(結晶性アルミノケイ酸塩)な
どの吸着剤に担持されたり担持されない光触媒(後で述
べる酸化チタンなど)が塗布されたり、練り込まれたり
などして配置してあり、この光触媒フィルタの紫外線が
照射さない側の表層Bには、紫外線照射を行わなくても
前記庫内の雰囲気において光触媒フィルタ25の通風路
を通過する空気中の臭い分子を分解する機能を有する後
で述べる酸化触媒が疎水性ゼオライトなどの吸着剤に担
持されたりあるいは担持されずに塗布されたり、練り込
まれたりなどして配置されている。Reference numeral 25 is a photocatalytic filter. The surface layer A of the photocatalyst filter on the side irradiated with ultraviolet rays is coated with a photocatalyst (such as titanium oxide described later) that is supported or not supported by an adsorbent such as hydrophobic zeolite (crystalline aluminosilicate) described later. The surface layer B of the photocatalyst filter on the side not exposed to ultraviolet rays is arranged in such a manner that it is kneaded or kneaded. The oxidation catalyst, which has the function of decomposing odorous molecules in the air passing through, is supported on an adsorbent such as a hydrophobic zeolite, or is applied without being supported, or is kneaded. There is.
【0023】本発明においては必要に応じて吸着剤を用
いることができる。本発明において用いる吸着剤は、細
菌、臭い分子、有害物質などを吸着するものであり、例
えば活性炭、アパタイト、セピオライト、ゼオライトな
どの無機物あるいは絹繊維などの有機物などである。こ
れらの中でも疎水性ゼオライトなどの吸水率が小さく、
疎水性の高いものが好ましく使用できる。例えば湿度1
00%雰囲気中で質量増加率が5%以下ものものが好ま
しく使用できる。吸水率が高いと水を吸って臭い分子な
どの吸着性が低下、劣化するためである。In the present invention, an adsorbent can be used if necessary. The adsorbent used in the present invention adsorbs bacteria, odorous molecules, harmful substances and the like, and is, for example, an inorganic substance such as activated carbon, apatite, sepiolite or zeolite, or an organic substance such as silk fiber. Among these, the water absorption of hydrophobic zeolite is small,
Those having high hydrophobicity can be preferably used. For example humidity 1
Those having a mass increase rate of 5% or less in a 00% atmosphere can be preferably used. This is because if the water absorption rate is high, water is absorbed and the adsorptivity of odorous molecules and the like decreases and deteriorates.
【0024】また、Si:Al比(ケイバン比)50以
上、好ましくは、60〜70程度あるいはそれ以上で疎
水性の高いゼオライトは、雰囲気中に水分が存在しても
しなくても臭い分子などをよりよく吸着できるので、本
発明において好ましく使用できる吸着剤である。Further, a highly hydrophobic zeolite having a Si: Al ratio (Cayvan ratio) of 50 or more, preferably about 60 to 70 or more, has a high hydrophobicity, and a odor molecule or the like is present even if moisture is present in the atmosphere. It is an adsorbent that is preferably used in the present invention because it can adsorb better.
【0025】本発明で用いる光触媒は、光の照射によっ
て、その触媒反応を促進させるものであり、その種類は
限定されることはないが、例えば酸化チタン(TiO
2 )、酸化鉄(Fe2 O3 )、酸化タングステン(WO
3 )、酸化スズ(SnO2 )、酸化ビスマス(Bi2 O
3 )、酸化ニッケル(NiO)、チタン酸ストロンチウ
ム(SrTiO3 )、酸化ケイ素(SiO2 )、硫化モ
リブデン(MoS2 )、リン化インジウム(InP)、
リン化ガリウム(GaP)、インジウム鉛(InPb)
等のn型及びP型半導体、あるいはさらに高活性にする
ため該半導体に白金(Pt)、ロジウム(Ru)、ニオ
ブ(Nb)、銅(Cu)、スズ(Sn)、酸化ルテニウ
ム(RuO2 )、酸化ニッケル(NiO)等の金属また
は金属酸化物を担持した半導体の固体光触媒及びルテニ
ウムビピリジル錯体等のルテニウム(Ru)錯体、ポル
フイリン類、クロロフイル等の分子光触媒が挙げられ
る。本発明においては、これら光触媒のうち1種または
2種以上を使用することができる。The photocatalyst used in the present invention accelerates its catalytic reaction by irradiation with light, and the kind thereof is not limited, but for example, titanium oxide (TiO 2).
2 ), iron oxide (Fe 2 O 3 ), tungsten oxide (WO
3 ), tin oxide (SnO 2 ), bismuth oxide (Bi 2 O)
3 ), nickel oxide (NiO), strontium titanate (SrTiO 3 ), silicon oxide (SiO 2 ), molybdenum sulfide (MoS 2 ), indium phosphide (InP),
Gallium phosphide (GaP), indium lead (InPb)
N-type and P-type semiconductors such as platinum, or platinum (Pt), rhodium (Ru), niobium (Nb), copper (Cu), tin (Sn), ruthenium oxide (RuO 2 ) for higher activity. , A solid photocatalyst of a semiconductor carrying a metal such as nickel oxide (NiO) or a metal oxide, a ruthenium (Ru) complex such as a ruthenium bipyridyl complex, and a molecular photocatalyst such as porphyrins and chlorophyll. In the present invention, one or more of these photocatalysts can be used.
【0026】これらの中でもアナターゼ型酸化チタンは
好ましく使用できる。上記光触媒の調製法としては、固
体光触媒の場合、市販品の他、金属の高温焼成、電解酸
化、化学的蒸着法、真空蒸着法、塗布法、共沈法、金属
ハロゲン化物等の蒸発酸化法等により調製する例を挙げ
ることができる。Among these, anatase type titanium oxide can be preferably used. As a method for preparing the photocatalyst, in the case of a solid photocatalyst, in addition to commercially available products, high temperature firing of metal, electrolytic oxidation, chemical vapor deposition method, vacuum vapor deposition method, coating method, coprecipitation method, evaporative oxidation method of metal halide, etc. And the like.
【0027】本発明で用いる酸化触媒は、紫外線照射を
行わなくても前記庫内の雰囲気において前記光触媒フィ
ルタの通風路を通過する空気中の臭い分子を分解する機
能を有するものであり、光触媒のように臭い分子を完全
に分解して水と炭酸ガスまで分解できるものであって
も、あるいは臭い分子を分解して臭いの少ないあるいは
臭いのない分子まで分解できるものであってもよく、そ
の種類は特に限定されるものではない、具体的には、例
えば、酸化銅、酸化亜鉛、酸化マンガン、酸化カルシウ
ム、臭素やヨウ素などのハロゲン類、あるいはこれらの
2種以上の組み合わせを挙げることができる。The oxidation catalyst used in the present invention has a function of decomposing odorous molecules in the air passing through the ventilation passage of the photocatalytic filter in the atmosphere in the chamber without irradiation of ultraviolet rays. As described above, the odor molecule may be completely decomposed into water and carbon dioxide gas, or the odor molecule may be decomposed into a molecule with little or no odor. Is not particularly limited, and specific examples thereof include copper oxide, zinc oxide, manganese oxide, calcium oxide, halogens such as bromine and iodine, or a combination of two or more thereof.
【0028】これらの中でも、臭素やヨウ素などのハロ
ゲン類は、前記庫内の雰囲気において前記光触媒フィル
タの通風路を通過する空気中の臭い分子を分解する機能
を有する上、エチレンなどの植物ホルモンも分解できる
ので本発明において好ましく使用できる。Among these, halogens such as bromine and iodine have a function of decomposing odorous molecules in the air passing through the ventilation passage of the photocatalytic filter in the atmosphere inside the chamber, and also plant hormones such as ethylene. Since it can be decomposed, it can be preferably used in the present invention.
【0029】例えば、本発明で用いる酸化触媒の一例で
ある酸化マンガンは、紫外線照射を行わなくても、前記
庫内の雰囲気において前記光触媒フィルタの通風路を通
過する空気中のメチルメルカプタンを、2硫化メチルに
分解できる。メチルメルカプタンは嗅覚閾値が0.00
0070の臭いの非常に強い臭い分子であるが、2硫化
メチルは嗅覚閾値が0.0022で臭いの弱い分子であ
る。メチルメルカプタンを2硫化メチルに分解すればそ
れだけで臭いを相当低減する効果があるが、紫外線照射
を行って光触媒を活性化して脱臭する際には、メチルメ
ルカプタンを完全分解するのに較べて、この2硫化メチ
ルは容易に完全分解され、無臭化される。For example, manganese oxide, which is an example of the oxidation catalyst used in the present invention, can remove methyl mercaptan in the air passing through the ventilation passage of the photocatalytic filter in the atmosphere in the chamber without irradiation of ultraviolet rays. Can be decomposed into methyl sulfide. Methyl mercaptan has an olfactory threshold of 0.00
0070 is a molecule with a very strong odor, but methyl disulfide has a weak odor with an olfactory threshold of 0.0022. Decomposing methyl mercaptan into methyl disulfide alone has the effect of considerably reducing the odor, but when irradiating ultraviolet rays to activate the photocatalyst to deodorize, this is compared to complete decomposition of methyl mercaptan. Methyl disulfide is easily completely decomposed and deodorized.
【0030】本発明で用いる光触媒、酸化触媒、吸着剤
の種類、粒径、光触媒フィルタの表層への配置量などは
臭い分子の種類や量、細菌の種類や量などによって異な
るので、それぞれの成分に対する要求程度や要求性能に
よって適宜制御したり、選定などして決められることが
好ましく、特に限定されるものではない。The photocatalyst, the oxidation catalyst, the type of adsorbent, the particle size, the amount of the photocatalyst filter arranged on the surface layer, etc. used in the present invention vary depending on the type and amount of odorous molecules and the type and amount of bacteria. It is preferable to appropriately control or select according to the degree of demand and performance required for the above, and there is no particular limitation.
【0031】光触媒や酸化触媒を吸着剤に担持する方法
も公知の方法でよく特に限定されるものではない。The method of supporting the photocatalyst or the oxidation catalyst on the adsorbent may be a known method and is not particularly limited.
【0032】本発明においては、光触媒をあるいは光触
媒を疎水性ゼオライトなどの吸着剤に担持させ、バイン
ダーを用いて光触媒フィルタの紫外線が照射される側の
表層Aに固着して配置することが好ましい。バインダー
としては紫外線を透過する透明性を有し、紫外線による
劣化が少なく安定して使用できるようなものであれば有
機物でも、無機物でも、あるいはこれらの組み合わせで
あってもよく、特に限定されるものではない。無機物は
紫外線による劣化が少ないので好ましく使用できる。本
発明で好ましく用いるバインダーの例としてガラス、水
ガラスなどを挙げることができる。In the present invention, it is preferable that the photocatalyst or the photocatalyst is supported on an adsorbent such as hydrophobic zeolite, and is fixedly arranged on the surface layer A of the photocatalyst filter on the side irradiated with ultraviolet rays using a binder. The binder may be an organic substance, an inorganic substance, or a combination thereof as long as it has transparency to transmit ultraviolet rays and can be stably used with little deterioration due to ultraviolet rays, and is particularly limited. is not. Inorganic substances are preferably used because they are less deteriorated by ultraviolet rays. Examples of the binder preferably used in the present invention include glass and water glass.
【0033】本発明においては、酸化触媒をあるいは酸
化触媒を疎水性ゼオライトなどの吸着剤に担持させ、バ
インダーを用いて光触媒フィルタの紫外線が照射されな
い側の表層Bに固着して配置することが好ましい。バイ
ンダーとしては紫外線による劣化の問題が少ないので通
常バインダーとして使用される公知の有機系バインダー
を使用することもでき、また勿論前記のような無機物で
もよく、またこれらの組み合わせであってもよく、特に
限定されるものではない。In the present invention, it is preferable that the oxidation catalyst or the oxidation catalyst is supported on an adsorbent such as a hydrophobic zeolite, and the binder is used and fixed to the surface layer B of the photocatalyst filter on the side not exposed to ultraviolet rays. . As the binder, since there is little problem of deterioration due to ultraviolet rays, it is possible to use a known organic binder that is usually used as a binder. Of course, the above-mentioned inorganic substances may also be used, or a combination thereof may be used, and in particular, It is not limited.
【0034】この光触媒フィルタ25はコルゲート型の
通風路が構成された段ボール紙を積層したような構造を
有し、例えばこのフィルタの紫外線が照射される側の表
層Aには前記ゼオライト吸着剤に前記光触媒を担持させ
たものがバインダーを使用するかあるいは使用せずにス
プレーなどの方法により塗布されたりまたは練り込んで
配置されており、そしてこのフィルタの紫外線が照射さ
れない側の表層Bには前記ゼオライト吸着剤に前記酸化
触媒を担持させたものがバインダーを使用するかあるい
は使用せずにスプレーなどの方法により塗布されたりま
たは練り込んで配置されている。なおこの光触媒フィル
タ25はハニカム型の通風路が構成されたものでもよ
い。The photocatalyst filter 25 has a structure in which corrugated corrugated paper having corrugated air passages is laminated, and for example, the zeolite adsorbent is added to the zeolite adsorbent on the surface layer A on the side irradiated with ultraviolet rays of the filter. The one carrying the photocatalyst is applied or kneaded by a method such as spraying with or without the use of a binder, and is arranged by kneading, and the surface layer B on the side not exposed to the ultraviolet rays of the filter has the above zeolite. The adsorbent supporting the above-mentioned oxidation catalyst may be applied or kneaded by a method such as spraying with or without using a binder. The photocatalytic filter 25 may have a honeycomb type ventilation passage.
【0035】この光触媒フィルタ25は、除霜ヒータ2
2の下方でダクト23が曲折する曲折部Cに配置され、
その通風路は冷気の通過方向に合うように傾斜してい
る。このため、光触媒フィルタ25の通風路の傾きは曲
折部Cにおけるダクト23の傾きに合っている(また
は、光触媒フィルタ25の通風路の傾きは、この光触媒
フィルタ25を収納した通気ダクト23内の冷気(空
気)の流れる向きに合っている)。このため、光触媒フ
ィルタ25の冷気に対する通風抵抗を抑制でき、冷気の
流れを悪くすることも少ない。The photocatalytic filter 25 is used in the defrost heater 2
The duct 23 is arranged in the bent portion C below 2
The ventilation passage is inclined so as to match the direction of passage of cold air. Therefore, the inclination of the ventilation passage of the photocatalyst filter 25 matches the inclination of the duct 23 at the bent portion C (or the inclination of the ventilation passage of the photocatalyst filter 25 depends on the cool air in the ventilation duct 23 housing the photocatalyst filter 25). It matches the direction of (air) flow. Therefore, the ventilation resistance of the photocatalytic filter 25 to the cool air can be suppressed, and the flow of the cool air is less likely to deteriorate.
【0036】次に脱臭作用を説明する。冷蔵庫10のフ
ァン18が作動し、庫内冷気が風路20に循環すると、
冷気中の臭い分子(例えば、アンモニア、アセトアルデ
ヒド、メチルメルカプタン、硫化水素、ホルムアルデヒ
ドなどやエチレンなどの有機化合物分子)も同時に循環
して流れる。この臭い分子は、光触媒フィルタ25を通
過する際に紫外線が照射される側の表層Aにある吸着剤
に吸着して集められる。そして紫外線放射ランプ24か
らの紫外線により励起された光触媒により分解される。
なおここでは、紫外線の波長を360nmとしたが、こ
の波長を短波長に変えて殺菌作用も持たせるようにして
もよい。例えば、紫外線波長が254nmのランプ24
を選択した場合、光触媒フィルタ25の吸着剤により集
められた臭い分子は360nmの場合と同様に光触媒に
より分解される。また254nmになれば、殺菌作用が
あり、紫外線により殺菌することが可能となる。そして
光触媒フィルタ25の吸着剤により集められ、紫外線に
より死滅した細菌の残骸は光触媒により分解される。ま
た、紫外線の波長を185nmとすれば紫外線だけでな
く、オゾンを発生させることが可能となる。しかしオゾ
ンは毒性があるので吸着除去するなどにより循環する冷
気中の濃度が0.1ppm程度以下にするように制御す
ることが好ましい。Next, the deodorizing action will be described. When the fan 18 of the refrigerator 10 operates and the cold air in the refrigerator circulates in the air passage 20,
Odor molecules in cold air (for example, ammonia, acetaldehyde, methyl mercaptan, hydrogen sulfide, formaldehyde, and organic compound molecules such as ethylene) also circulate at the same time. The odorous molecules are adsorbed and collected by the adsorbent on the surface layer A on the side irradiated with ultraviolet rays when passing through the photocatalytic filter 25. Then, it is decomposed by the photocatalyst excited by the ultraviolet rays from the ultraviolet radiation lamp 24.
Although the wavelength of the ultraviolet rays is 360 nm here, the wavelength may be changed to a short wavelength so as to have a bactericidal action. For example, a lamp 24 with an ultraviolet wavelength of 254 nm
When is selected, the odorous molecules collected by the adsorbent of the photocatalytic filter 25 are decomposed by the photocatalyst as in the case of 360 nm. Further, when it becomes 254 nm, it has a bactericidal action, and it becomes possible to sterilize by ultraviolet rays. Then, the remains of the bacteria collected by the adsorbent of the photocatalytic filter 25 and killed by the ultraviolet rays are decomposed by the photocatalyst. Further, if the wavelength of the ultraviolet rays is 185 nm, not only the ultraviolet rays but also ozone can be generated. However, since ozone is toxic, it is preferable to control it so that the concentration in the circulating cold air is about 0.1 ppm or less by adsorption and removal.
【0037】本発明の冷蔵庫10においては、紫外線放
射ランプ24からの紫外線照射中でもあるいは紫外線の
照射を停止しても冷気中の臭い分子は光触媒フィルタ2
5の紫外線が照射されない側の表層Bにある吸着剤にも
吸着して集められ、そして前記酸化触媒により分解され
る。したがって、本発明の冷蔵庫10は、例えば臭いの
強い被冷却物を収納した際などにはそれをセンサで検知
して、紫外線放射ランプ24を作動して紫外線を光触媒
に照射して脱臭したり、庫内の臭いが少なく光触媒によ
る強い脱臭の必要があまりないなどの場合はそれをセン
サで検知して紫外線放射ランプ24による紫外線照射を
停止するなど、必要に応じて紫外線の照射を停止する間
欠照射を行うことができる。紫外線照射中でもあるいは
紫外線の照射を停止したり間欠的に行って紫外線照射を
行わない間も脱臭できるので脱臭効率が向上する上、紫
外線放射ランプ24の長寿命化や消費電力の低減を図る
ことができる。In the refrigerator 10 of the present invention, the odorous molecules in the cold air are exposed to the photocatalytic filter 2 even during the irradiation of the ultraviolet rays from the ultraviolet radiation lamp 24 or even when the irradiation of the ultraviolet rays is stopped.
The ultraviolet ray of No. 5 is also adsorbed and collected by the adsorbent in the surface layer B on the side not irradiated with ultraviolet rays, and decomposed by the oxidation catalyst. Therefore, in the refrigerator 10 of the present invention, for example, when an object to be cooled having a strong odor is stored, it is detected by a sensor and the ultraviolet radiation lamp 24 is operated to irradiate the photocatalyst with ultraviolet rays to deodorize. When there is little odor in the refrigerator and there is not much need for strong deodorization with a photocatalyst, it is detected by a sensor and the ultraviolet irradiation by the ultraviolet radiating lamp 24 is stopped. It can be performed. Deodorization can be performed during UV irradiation, or while UV irradiation is stopped or intermittently performed and UV irradiation is not performed, so that the deodorization efficiency is improved and the life of the UV radiation lamp 24 can be extended and the power consumption can be reduced. it can.
【0038】本発明において、光触媒フィルタ25の紫
外線が照射される側の表層Aの色と、光触媒フィルタ2
5の紫外線が照射されない側の表層Bの色とを異なる色
にしておくことが好ましい。このようにしておくことに
より光触媒フィルタ25を本発明の冷蔵庫10に設置す
る際などに紫外線が照射される表層Aの側と、紫外線が
照射されない表層Bの側とを間違えずに、すなわち紫外
線放射ランプ24からの紫外線の照射方向に対して表層
Aの側を向けて正しく設置できる。In the present invention, the color of the surface layer A of the photocatalytic filter 25 on the side irradiated with ultraviolet rays and the photocatalytic filter 2
It is preferable to set the color of the surface layer B on the side not irradiated with the ultraviolet ray of No. 5 to a different color. By doing so, when the photocatalyst filter 25 is installed in the refrigerator 10 of the present invention, the side of the surface layer A which is irradiated with ultraviolet rays and the side of the surface layer B which is not irradiated with ultraviolet rays are not mistaken, that is, the ultraviolet radiation is performed. It can be installed correctly with the surface layer A side facing the irradiation direction of the ultraviolet rays from the lamp 24.
【0039】図4を参照しつつ、本発明の他の実施の形
態を説明する。図4に示した本発明の冷蔵庫10Aは、
光触媒フィルタ25の風上に紫外線放射ランプ24が配
置されている以外は図1に示した本発明の冷蔵庫10と
同様になっている。Another embodiment of the present invention will be described with reference to FIG. The refrigerator 10A of the present invention shown in FIG.
The refrigerator 10 is similar to the refrigerator 10 of the present invention shown in FIG. 1 except that the ultraviolet radiation lamp 24 is arranged on the windward side of the photocatalytic filter 25.
【0040】次に脱臭作用を説明する。冷蔵庫10Aの
ファンが作動し、庫内冷気がダクト23を含む風路に循
環すると、冷気中の臭い分子は、光触媒フィルタ25を
通過する際に紫外線が照射される側の表層Aに配置され
た吸着剤に吸着して集められ、そして紫外線放射ランプ
24からの紫外線により励起された光触媒により分解さ
れ、冷気中に浮遊する細菌は紫外線照射されて殺菌され
る。本発明の冷蔵庫10Aは、紫外線放射ランプ24か
らの紫外線照射中でもあるいは紫外線の照射を停止して
も冷気中の臭い分子は光触媒フィルタ25の紫外線が照
射されない側の表層Bにある吸着剤に吸着して集めら
れ、そして前記酸化触媒により分解される。紫外線の照
射を停止したり間欠的に行って紫外線照射を行わない間
も脱臭できるので脱臭効率が向上する上、紫外線放射ラ
ンプ24の長寿命化や消費電力の低減を図ることができ
る。Next, the deodorizing action will be described. When the fan of the refrigerator 10A operates and the cold air in the refrigerator circulates in the air passage including the duct 23, the odorous molecules in the cold air are arranged on the surface layer A on the side irradiated with ultraviolet rays when passing through the photocatalytic filter 25. Bacteria floating in the cold air are sterilized by being adsorbed by the adsorbent, collected, and decomposed by the photocatalyst excited by the ultraviolet rays from the ultraviolet radiation lamp 24 and floating in the cool air. In the refrigerator 10A of the present invention, the odorous molecules in the cool air are adsorbed by the adsorbent on the surface layer B of the photocatalytic filter 25 on the side not irradiated with ultraviolet rays even when the ultraviolet irradiation from the ultraviolet irradiation lamp 24 is stopped or even when the irradiation of ultraviolet rays is stopped. Collected and decomposed by the oxidation catalyst. Since the deodorization can be performed even when the ultraviolet irradiation is stopped or intermittently performed and the ultraviolet irradiation is not performed, the deodorization efficiency is improved and the life of the ultraviolet radiation lamp 24 can be extended and the power consumption can be reduced.
【0041】なお、上記実施形態の説明は、本発明を説
明するためのものであって、特許請求の範囲に記載の発
明を限定し、或は範囲を減縮するものではない。又、本
発明の各部構成は上記実施形態に限らず、特許請求の範
囲に記載の技術的範囲内で種々の変形が可能である。The above description of the embodiments is for explaining the present invention, and does not limit the invention described in the claims or reduce the scope thereof. Further, the configuration of each part of the present invention is not limited to the above embodiment, and various modifications can be made within the technical scope described in the claims.
【0042】[0042]
【発明の効果】本発明の請求項1記載の光触媒フィルタ
を備えた冷蔵庫は、前面に開閉自在な扉を有し、内部に
複数の棚を有して被冷却物を収納可能にする庫内と、こ
の庫内の空気を吸い込み冷却器で冷却した後、前記庫内
の上段の棚の上方側から前記庫内に吐出させる風路と、
この風路中に設けられ前記冷却された空気を強制的に前
記庫内へ循環させる送風機とを備えるとともに、前記風
路中の前記冷却器の風上に設けられる平面状の紫外線放
射ランプおよびこの紫外線放射ランプの照射範囲内にコ
ルゲート型またはハニカム型の通風路が構成された光触
媒フィルタを設けた冷蔵庫であって、前記光触媒フィル
タの紫外線が照射される側の表層に、紫外線照射により
励起されて前記通風路を通過する空気中の臭い分子を分
解する機能を有する光触媒を配置し、前記光触媒フィル
タの紫外線が照射されない側の表層に、前記庫内の雰囲
気において前記通風路を通過する空気中の臭い分子を分
解する機能を有する酸化触媒を配置したので、フィルタ
の各部分まで距離がほぼ均等になり、光触媒に対する紫
外線の照射強度がほぼ均一になるので光触媒の活性化が
均一で十分となり脱臭効率や殺菌効率が向上するととも
に、光触媒フィルタの表層の裏表を有効に利用して、紫
外線の照射中は勿論のこと、紫外線の照射を停止したり
間欠的に行って紫外線照射を行わない間も脱臭でき、紫
外線ランプの長寿命化、消費電力の低減を図ることがで
きるという顕著な効果を奏する。The refrigerator provided with the photocatalytic filter according to claim 1 of the present invention has a door having an openable and closable door on the front surface and a plurality of shelves inside so that an object to be cooled can be stored. And, after sucking the air in the refrigerator and cooling it with a cooler, an air passage for discharging the air from the upper side of the upper shelf in the refrigerator into the refrigerator,
A flat ultraviolet radiation lamp provided in the air passage and provided with a blower for forcibly circulating the cooled air into the chamber, and a flat ultraviolet radiation lamp provided on the windward side of the cooler in the air passage. A refrigerator provided with a photocatalytic filter having a corrugated or honeycomb type ventilation passage in the irradiation range of an ultraviolet radiation lamp, wherein the surface layer of the photocatalytic filter on the side irradiated with ultraviolet rays is excited by ultraviolet irradiation. A photocatalyst having a function of decomposing odorous molecules in the air passing through the ventilation passage is arranged, and a surface layer of the photocatalyst filter on the side not irradiated with ultraviolet rays, in the air passing through the ventilation passage in the atmosphere of the refrigerator. Since the oxidation catalyst that has the function of decomposing odorous molecules is arranged, the distance to each part of the filter is almost equal, and the irradiation intensity of ultraviolet rays on the photocatalyst is Since the photocatalyst is uniformly activated, the photocatalyst activation will be uniform and sufficient, and the deodorization efficiency and sterilization efficiency will be improved, and by effectively utilizing the front and back surfaces of the photocatalyst filter, the UV irradiation can be performed not only during UV irradiation It is possible to deodorize even when the ultraviolet irradiation is not performed by stopping or intermittently performing, and it is possible to prolong the life of the ultraviolet lamp and reduce the power consumption.
【0043】本発明の請求項2記載の光触媒フィルタを
備えた冷蔵庫は、請求項1記載の冷蔵庫において、前記
光触媒および酸化触媒がSi:Al比が50以上の疎水
性ゼオライトからなる吸着剤に担持されているので、請
求項1記載の冷蔵庫と同じ効果を奏するとともに、庫内
を循環する空気中に水分が存在しても、臭い分子をよく
吸着でき、吸着した臭い分子を光触媒や酸化触媒により
よく分解でき、脱臭効率を向上できるというさらなる顕
著な効果を奏する。A refrigerator provided with the photocatalytic filter according to claim 2 of the present invention is the refrigerator according to claim 1, wherein the photocatalyst and the oxidation catalyst are carried on an adsorbent made of a hydrophobic zeolite having a Si: Al ratio of 50 or more. Therefore, the same effect as the refrigerator according to claim 1 can be obtained, and even if moisture is present in the air circulating in the refrigerator, the odor molecules can be well adsorbed, and the adsorbed odor molecules can be absorbed by the photocatalyst or the oxidation catalyst. It has a further remarkable effect that it can be decomposed well and the deodorizing efficiency can be improved.
【0044】本発明の請求項3記載の光触媒フィルタを
備えた冷蔵庫は、請求項1あるいは請求項2記載の冷蔵
庫において、前記酸化触媒が臭素、ヨウ素から選ばれる
酸化触媒であるので、請求項1記載の冷蔵庫と同じ効果
を奏するとともに、エチレンなどの植物ホルモンもよく
分解できるというさらなる顕著な効果を奏する。A refrigerator provided with the photocatalytic filter according to claim 3 of the present invention is the refrigerator according to claim 1 or 2, wherein the oxidation catalyst is an oxidation catalyst selected from bromine and iodine. It has the same effect as the refrigerator described above, and has a further remarkable effect that plant hormones such as ethylene can be decomposed well.
【0045】本発明の請求項4記載の光触媒フィルタを
備えた冷蔵庫は、請求項1から請求項3のいずれかに記
載の冷蔵庫において、前記光触媒フィルタの紫外線が照
射される側の表層の色と、前記光触媒フィルタの紫外線
が照射されない側の表層の色とが異なるので、請求項1
記載の冷蔵庫と同じ効果を奏するとともに、光触媒フィ
ルタを冷蔵庫の所定の場所に設置する際などに紫外線が
照射される表層の側と、紫外線が照射されない表層の側
とを間違えずに、すなわち紫外線放射ランプからの紫外
線の照射方向に対して光触媒が配置された側の表層を向
けて正しく設置できるというさらなる顕著な効果を奏す
る。A refrigerator provided with the photocatalytic filter according to claim 4 of the present invention is the refrigerator according to any one of claims 1 to 3, wherein the color of the surface layer of the photocatalytic filter on the side irradiated with ultraviolet rays is , The color of the surface layer of the photocatalyst filter on the side not irradiated with ultraviolet rays is different,
While exhibiting the same effect as the refrigerator described, the surface side that is irradiated with ultraviolet rays when installing the photocatalyst filter in a predetermined place of the refrigerator and the side of the surface layer that is not irradiated with ultraviolet rays are not mistaken, that is, ultraviolet radiation. It has a further remarkable effect that the surface layer on the side where the photocatalyst is arranged can be correctly installed with respect to the irradiation direction of the ultraviolet rays from the lamp.
【図1】本発明の冷蔵庫の例を説明する説明図である。FIG. 1 is an explanatory diagram illustrating an example of a refrigerator of the present invention.
【図2】図1に示した本発明の冷蔵庫の背面板を説明す
る説明図である。FIG. 2 is an explanatory view illustrating a back plate of the refrigerator of the present invention shown in FIG.
【図3】図1に示した本発明の冷蔵庫の一部拡大図であ
る。3 is a partially enlarged view of the refrigerator of the present invention shown in FIG.
【図4】本発明の冷蔵庫の他の例を説明する説明図であ
る。FIG. 4 is an explanatory diagram illustrating another example of the refrigerator of the present invention.
【図5】コルゲート型光触媒フィルタの外観を説明する
説明図である。FIG. 5 is an explanatory diagram illustrating an appearance of a corrugated photocatalytic filter.
【図6】従来の脱臭法を説明する説明図である。FIG. 6 is an explanatory diagram illustrating a conventional deodorizing method.
10、10A 本発明の家庭用冷蔵庫 11 棚 15 回転扉 17 冷却器 18 ファン(送風機) 20 風路 24 平面状の紫外線放射ランプ 25 光触媒フィルタ A 紫外線が照射される側の光触媒フィルタの表層 B 紫外線が照射されない側の光触媒フィルタの表層 10, 10A Home refrigerator of the present invention 11 shelves 15 revolving door 17 Cooler 18 fans (blower) 20 wind path 24 Flat UV radiation lamp 25 Photocatalytic filter A Surface layer of photocatalytic filter on the side irradiated with ultraviolet rays B Surface layer of photocatalytic filter on the side not exposed to ultraviolet rays
フロントページの続き (51)Int.Cl.7 識別記号 FI テーマコート゛(参考) B01D 53/86 B01J 29/04 A B01J 29/04 35/02 J 35/02 F25D 11/02 A F25D 11/02 B01D 53/36 H (72)発明者 神谷 英昭 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 (72)発明者 茂木 弘道 大阪府守口市京阪本通2丁目5番5号 三 洋電機株式会社内 Fターム(参考) 3L045 AA04 BA01 CA02 DA02 EA01 HA02 KA11 PA04 4C080 AA07 AA10 BB02 CC01 HH08 JJ03 KK08 LL10 MM01 MM02 NN03 NN04 NN06 QQ17 4D048 AA22 AB01 AB03 BA11X BB02 CD05 EA01 4G069 AA03 BA04B BA07B BB04B BC62B BD13A BD13B BD14A BD14B CA10 CA17 CD02 EA18 ZC04 Front page continuation (51) Int.Cl. 7 Identification code FI theme code (reference) B01D 53/86 B01J 29/04 A B01J 29/04 35/02 J 35/02 F25D 11/02 A F25D 11/02 B01D 53/36 H (72) Inventor Hideaki Kamiya 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Electric Co., Ltd. (72) Hiromichi Mogi 2-5-5 Keihan Hondori, Moriguchi City, Osaka Prefecture Sanyo Denki Co., Ltd. F-term (reference) 3L045 AA04 BA01 CA02 DA02 EA01 HA02 KA11 PA04 4C080 AA07 AA10 BB02 CC01 HH08 JJ03 KK08 LL10 MM01 MM02 NN03 NN04 NN06 QQ17 4D048 AA22 AB01 AB03B06B06A06B01B03B01A03 BA11X BB02 BA11X BB02 BA11X03BB02 BD13B BD14A BD14B CA10 CA17 CD02 EA18 ZC04
Claims (4)
の棚を有して被冷却物を収納可能にする庫内と、この庫
内の空気を吸い込み冷却器で冷却した後、前記庫内の上
段の棚の上方側から前記庫内に吐出させる風路と、この
風路中に設けられ前記冷却された空気を強制的に前記庫
内へ循環させる送風機とを備えるとともに、前記風路中
の前記冷却器の風上に設けられる平面状の紫外線放射ラ
ンプおよびこの紫外線放射ランプの照射範囲内にコルゲ
ート型またはハニカム型の通風路が構成された光触媒フ
ィルタを設けた冷蔵庫であって、前記光触媒フィルタの
紫外線が照射される側の表層に、紫外線照射により励起
されて前記通風路を通過する空気中の臭い分子を分解す
る機能を有する光触媒を配置し、前記光触媒フィルタの
紫外線が照射されない側の表層に、前記庫内の雰囲気に
おいて前記通風路を通過する空気中の臭い分子を分解す
る機能を有する酸化触媒を配置したことを特徴とする光
触媒フィルタを備えた冷蔵庫。1. A compartment having a door that can be opened and closed at the front and a plurality of shelves inside for accommodating an object to be cooled, and air in the compartment is sucked in and cooled by a cooler, An air passage for discharging the inside of the refrigerator from above the upper shelf in the refrigerator, and a blower forcibly circulating the cooled air provided in the air passage into the refrigerator, and A refrigerator provided with a photocatalytic filter having a flat ultraviolet radiation lamp provided on the windward side of the cooler in the air passage and a corrugated or honeycomb ventilation passage in the irradiation range of the ultraviolet radiation lamp. In the surface layer of the photocatalyst filter on the side irradiated with ultraviolet rays, a photocatalyst having a function of decomposing odorous molecules in the air that is excited by ultraviolet irradiation and passes through the ventilation passage is disposed, and the photocatalytic filter is irradiated with ultraviolet rays. Not done A refrigerator equipped with a photocatalyst filter, characterized in that an oxidation catalyst having a function of decomposing odorous molecules in the air passing through the ventilation passage in the atmosphere in the refrigerator is disposed on the surface layer on the other side.
比が50以上の疎水性ゼオライトからなる吸着剤に担持
されていることを特徴とする請求項1記載の冷蔵庫。2. The photocatalyst and the oxidation catalyst are Si: Al.
The refrigerator according to claim 1, wherein the refrigerator is supported on an adsorbent made of a hydrophobic zeolite having a ratio of 50 or more.
る酸化触媒であることを特徴とする請求項1あるいは請
求項2記載の冷蔵庫。3. The refrigerator according to claim 1 or 2, wherein the oxidation catalyst is an oxidation catalyst selected from bromine and iodine.
る側の表層の色と、前記光触媒フィルタの紫外線が照射
されない側の表層の色とが異なることを特徴とする請求
項1から請求項3のいずれかに記載の冷蔵庫。4. The color of the surface layer of the photocatalyst filter on the side where the ultraviolet rays are irradiated is different from the color of the surface layer of the photocatalyst filter on the side where the ultraviolet rays are not irradiated. Refrigerator according to any one.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002089418A JP3863798B2 (en) | 2002-03-27 | 2002-03-27 | Refrigerator with photocatalytic filter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002089418A JP3863798B2 (en) | 2002-03-27 | 2002-03-27 | Refrigerator with photocatalytic filter |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004286330A Division JP2005003365A (en) | 2004-09-30 | 2004-09-30 | Refrigerator having photocatalyst filter |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2003287353A true JP2003287353A (en) | 2003-10-10 |
JP3863798B2 JP3863798B2 (en) | 2006-12-27 |
Family
ID=29234999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002089418A Expired - Lifetime JP3863798B2 (en) | 2002-03-27 | 2002-03-27 | Refrigerator with photocatalytic filter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3863798B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008284344A (en) * | 2007-04-20 | 2008-11-27 | Panasonic Corp | Air cleaner, and air conditioner or refrigerator using the air cleaner |
JP2011056416A (en) * | 2009-09-10 | 2011-03-24 | Toyota Central R&D Labs Inc | Photocatalyst and method for manufacturing photocatalyst |
JP2014029226A (en) * | 2012-07-31 | 2014-02-13 | Hitachi Appliances Inc | Refrigerator |
RU2567455C1 (en) * | 2012-01-12 | 2015-11-10 | Кабусики Кайся Тосиба | Refrigerator |
CN115739126A (en) * | 2022-11-29 | 2023-03-07 | 湖北大学 | Application of (ZnS) mIn2S3 photocatalyst in photocatalytic degradation of ethylene and storage and preservation of fruits and vegetables |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06205928A (en) * | 1989-12-08 | 1994-07-26 | Union Carbide Chem & Plast Co Inc | Contamination reduction method |
JPH08248209A (en) * | 1995-03-08 | 1996-09-27 | Omron Corp | Sheet-like optical element package |
JPH10277367A (en) * | 1997-04-04 | 1998-10-20 | Sanyo Electric Co Ltd | Apparatus for deodorization-sterilization |
JPH11226416A (en) * | 1998-02-18 | 1999-08-24 | Daicel Chem Ind Ltd | Oxidation catalyst system and oxidation method using the same |
JP2000102598A (en) * | 1998-09-30 | 2000-04-11 | Hitachi Ltd | Air purifying membrane and article provided with it |
JP2000254449A (en) * | 1999-03-11 | 2000-09-19 | Sharp Corp | Base material for decomposing harmful or odor gas and device therefor |
JP2001147076A (en) * | 1999-11-18 | 2001-05-29 | Matsushita Refrig Co Ltd | Refrigerator |
-
2002
- 2002-03-27 JP JP2002089418A patent/JP3863798B2/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06205928A (en) * | 1989-12-08 | 1994-07-26 | Union Carbide Chem & Plast Co Inc | Contamination reduction method |
JPH08248209A (en) * | 1995-03-08 | 1996-09-27 | Omron Corp | Sheet-like optical element package |
JPH10277367A (en) * | 1997-04-04 | 1998-10-20 | Sanyo Electric Co Ltd | Apparatus for deodorization-sterilization |
JPH11226416A (en) * | 1998-02-18 | 1999-08-24 | Daicel Chem Ind Ltd | Oxidation catalyst system and oxidation method using the same |
JP2000102598A (en) * | 1998-09-30 | 2000-04-11 | Hitachi Ltd | Air purifying membrane and article provided with it |
JP2000254449A (en) * | 1999-03-11 | 2000-09-19 | Sharp Corp | Base material for decomposing harmful or odor gas and device therefor |
JP2001147076A (en) * | 1999-11-18 | 2001-05-29 | Matsushita Refrig Co Ltd | Refrigerator |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008284344A (en) * | 2007-04-20 | 2008-11-27 | Panasonic Corp | Air cleaner, and air conditioner or refrigerator using the air cleaner |
JP2011056416A (en) * | 2009-09-10 | 2011-03-24 | Toyota Central R&D Labs Inc | Photocatalyst and method for manufacturing photocatalyst |
RU2567455C1 (en) * | 2012-01-12 | 2015-11-10 | Кабусики Кайся Тосиба | Refrigerator |
JP2014029226A (en) * | 2012-07-31 | 2014-02-13 | Hitachi Appliances Inc | Refrigerator |
CN115739126A (en) * | 2022-11-29 | 2023-03-07 | 湖北大学 | Application of (ZnS) mIn2S3 photocatalyst in photocatalytic degradation of ethylene and storage and preservation of fruits and vegetables |
CN115739126B (en) * | 2022-11-29 | 2024-06-07 | 湖北大学 | Application of (ZnS) mIn2S3 photocatalyst in photocatalytic degradation of ethylene and storage and fresh-keeping of fruits and vegetables |
Also Published As
Publication number | Publication date |
---|---|
JP3863798B2 (en) | 2006-12-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2527770B1 (en) | Refrigerator | |
JP2003106752A (en) | Refrigerator | |
TWI409421B (en) | Refrigerators and sterilization devices | |
JP3863797B2 (en) | Refrigerator with deodorizing function | |
JP2005052714A (en) | Deodorization device and refrigerator loaded therewith | |
JP2004317070A (en) | Refrigerator | |
JP2003287353A (en) | Refrigerator having photocatalyst filter | |
JP2012026708A (en) | Refrigerator | |
CN218379645U (en) | Indoor air conditioner | |
JP2003294354A (en) | Refrigerator | |
JP2005003365A (en) | Refrigerator having photocatalyst filter | |
JP2006017358A (en) | Refrigerator | |
JP2009030922A (en) | Direct cooling-type refrigerator | |
JP2005226861A (en) | Deodorizing device and refrigerator equipped therewith | |
JP2009030917A (en) | Direct cooling type refrigerator, and disinfecting device | |
JPH0692825B2 (en) | Air purifier | |
JP2003287359A (en) | Refrigerator having superior deodorizing performance | |
JP2002206851A (en) | Refrigerator | |
JP2001304749A (en) | Refrigerator | |
JP2004144324A (en) | Deodorizing device for refrigerator, and refrigerator provided with the same | |
JP2003287358A (en) | Refrigerator | |
JP2009030918A (en) | Direct cooling type refrigerator, and disinfecting device | |
JP2002102320A (en) | Deodorizing and freshness keeping device | |
CN220608710U (en) | Sterilizing and purifying device and electrical equipment | |
JP3688869B2 (en) | Purifier in refrigerator |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20041013 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060529 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060613 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20060810 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20060912 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20060929 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 3863798 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101006 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111006 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121006 Year of fee payment: 6 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121006 Year of fee payment: 6 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121006 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131006 Year of fee payment: 7 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |