JP5359139B2 - refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator with high deodorizing and disinfecting performance capable of obtaining deodorizing and disinfecting effects in a wide range without affecting air duct resistance. <P>SOLUTION: The refrigerator includes a heat insulating box body 301; a door body 307 mounted in an openable/closable manner to an opening of each storage chamber; a refrigerating cycle for generating cold air; and a cold air circulating path for circulating the cold air. A deodorizing means or a disinfecting means 335a is provided in a discharge duct flowing into the storage chamber 304 included in a subsequent stage of the storage chamber 302 through which the cold air passes first. Consequently, even if the disinfecting means is arranged in the storage chamber, cold air circulating efficiency is maintained hardly affecting the air duct resistance in the cold air circulating path, and the storage chambers in the second position onward in the flow direction of cold air from a cooling means can be deodorized and disinfected. The deodorizing and disinfecting effects can thereby be obtained in the wide range without affecting the air duct resistance. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator in which cold air circulates between a storage room and a cooling means.

  In recent years, since various foods in various regions are stored in refrigerators, there is a great need for deodorization and sterilization of foods stored in refrigerators. For the purpose of sterilization, development of a sterilization / deodorization apparatus using various methods is in progress.

  A filter constituting conventional sterilization means is disposed so as to block an air passage, and performs deodorization and sterilization in air passing through the filter (see, for example, Patent Document 1).

  In addition, as a conventional sterilization method using a photocatalyst, a filter-like member carrying titanium oxide is irradiated with ultraviolet rays, and an organic substance in the refrigerator is oxidized and decomposed using a photocatalytic reaction to deodorize and remove. Several methods, such as those that carry out fungi, are employed.

  The conventional sterilization / deodorization apparatus will be described below with reference to the drawings.

  FIG. 7 is a partial longitudinal sectional view of the refrigerator when the sterilization means is attached to the refrigerating room return air suction portion.

  The sterilization means shown in FIG. 1 includes a sterilization filter 1, a deodorization filter 2, and an attachment frame 3. Here, the sterilization filter 1 is formed by mixing a zeolite composed of oxides of silicon, aluminum, sodium and the like into a honeycomb shape, and has a cell count of 100 to 250 cells / in 2 in relation to ventilation resistance. An aperture ratio of 70 to 80% and a thickness of about 8 mm are used.

  The deodorizing filter 2 is kneaded with manganese oxide and silicon or aluminum oxide and molded into a honeycomb shape. In this case, the number of cells and the aperture ratio are often almost the same as those of the sterilizing filter. The sterilizing filter 1 and the deodorizing filter 2 are integrally fixed by a mounting frame 3.

  The sterilizing means is disposed in a cold air passage 9 provided in a penetrating manner in the heat insulating portion 8 between the freezer compartment 5 and the refrigerator compartment 6 and is attached so as to block the cold air passage 9.

  The operation of the refrigerator configured as described above will be described below.

  A part of the cold air generated in the evaporator 11 flows into the freezer compartment 5, and a part flows into the refrigerator compartment 6 and other storage rooms below. The cold air circulated through each chamber travels from the return air suction portion 7 to the evaporator 11 through the cold air passage 9. At this time, the wind speed in the cool air passage 9 is about 0.5 m / sec.

By installing the sterilization means, first, bacteria and mold spores are captured together with dust and dust by the sterilization filter 1 in the returning cold air, and then chemical changes of odorous components are advanced by the deodorization filter 2 to remove the odor. Is done.
JP-A-5-157444

  However, in the above conventional configuration, since the deodorizing / sterilizing filter is arranged so as to block the inside of the cool air return air passage, the air flow resistance in the cold air circulation route is large. Therefore, in order to obtain a cooling performance equivalent to that without the filter, it is necessary to increase the ability of the fan 10 for forcibly circulating the cool air.

  However, increasing the capacity of the fan is not desirable because it increases noise and goes against the problem of energy saving.

  The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a refrigerator capable of obtaining a deodorizing and sterilizing effect over a wide range without affecting airflow resistance.

In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a heat insulating box body that forms a plurality of storage rooms, a door body that is openably and closably attached to an opening of each storage room of the box body, Cooling means for generating cold air for cooling the storage chamber, air blowing means for circulating the cold air, an upper storage chamber through which the cold air generated by the cooling means first passes, and lower in the direction of gravity than the upper storage chamber It includes a lower reservoir chamber located on the side, and the lower storage compartment discharge duct provided for discharging the cool air passed through the upper storage compartment to the lower storage compartment, and a deodorization unit or filtering unit, the lower The storage chamber discharge duct is disposed on the back side of the lower storage chamber, and the lower storage chamber discharge duct is configured not to include the air blowing means, and the deodorizing means or the removal means.
The bacterium means is constituted by a sheet-like filter, and the deodorizing means or the sterilizing means is arranged in parallel with the wall surface of the lower storage chamber discharge duct .

  As a result, in the cold air circulation path, it is difficult to influence the air path resistance, and even if disinfecting means is arranged in the storage chamber, the cooling air circulation efficiency is maintained, and the second and subsequent positions in the cold air flow direction from the cooling means. It becomes possible to deodorize and disinfect the storage chamber.

  Further, the temperature of the cold air increases as the distance from the cooling means increases. If dew condensation or the like occurs in the storage room, it is not desirable in terms of visual sense, but the second and subsequent storage rooms are hotter than the first storage room, and are thus less likely to condense. Therefore, it can be said that the second and subsequent storage chambers can maintain a visually sensationally favorable state, and there is little risk of generating market complaints.

  In addition, this does not directly cool the subsequent storage chamber with the cool air containing germs and odors in the first storage chamber, and the deodorizing means or the sterilized cool air is discharged. Can be suppressed. Furthermore, although it is slight, it is possible to suppress the transfer of germs and odors in the connected air passage.

  The refrigerator according to the present invention is less affected by airflow resistance, and can maintain the circulation efficiency of cold air even when disinfecting means is disposed in the storage chamber, and can obtain the effect of deodorization and disinfection over a wide range. Can be provided.

The refrigerator according to claim 1 generates heat insulation box that forms a plurality of storage chambers, a door that can be freely opened and closed at an opening of each storage chamber of the box body, and cool air that cools the storage chamber. A cooling means that circulates the cold air, an upper storage chamber through which the cold air generated by the cooling means first passes, and a lower storage chamber that is located below the upper storage chamber in the direction of gravity. A lower storage chamber discharge duct provided for discharging the cool air that has passed through the upper storage chamber to the lower storage chamber, and a deodorizing means or a sterilizing means , wherein the lower storage chamber discharge duct is the lower storage chamber It is arranged on the back side of the storage chamber, the lower storage chamber discharge duct is configured not to have the air blowing means, the deodorizing means or the sterilizing means is constituted by a sheet-like filter, and the deodorizing means may be used. It said filtering unit is arranged parallel to the wall surface of the lower storage compartment discharge duct.

  As a result, cold air containing germs and odors in the first storage chamber does not directly cool the subsequent storage chamber, and deodorized or sterilized cold air is discharged, so that germs and odors can be transferred. Can be suppressed. Furthermore, although it is slight, it is possible to suppress the transfer of germs and odors in the connected air passage.

  Further, the discharge section to the subsequent storage chamber can reduce the air path resistance compared to the installation in the discharge air path to the first storage chamber where the dynamic pressure of the fan directly acts. In addition, the connection air passage from the first storage room to the subsequent storage room often minimizes the minimum cross-sectional area and the ineffective volume. By providing a deodorizing unit or a sterilizing unit in the discharge unit that decreases, the air path resistance can be further reduced.

Further, in the refrigerator according to claim 2 , in addition to the refrigerator according to claim 1 , the lower storage chamber is provided with a case inside the cabinet, and the air passage discharge section in which the deodorizing means or the sterilizing means is arranged is the warehouse. It is provided in the back part of the inner case, and is opened toward the lower part outside the inner case.

  As a result, the deodorizing means or sterilizing means decomposes odors and germs once captured on the filter over a certain amount of time, and if a large amount of odors or germs flow transiently On the other hand, if the capacity of the filter is exceeded, odors and germs may be discharged from the filter. For this reason, in the unlikely event that odors transfer to the stored items in the storage room at the rear stage or attachment of germs, the structure will become a flow toward the lower part of the outer periphery of the case so as not to enter the case inside the cabinet. I'm taking it.

  Furthermore, when the flow of the cold air is stopped in such a state, the air flow resistance is reduced and the movement of the cold air due to natural convection is likely to occur. At this time, since the air passage discharge part in which the deodorizing means or the sterilizing means is arranged is opened toward the lower part outside the case at the back part of the internal case, the natural convection cold air is the lower part outside the internal case. It is possible to prevent the intrusion into the case inside the cabinet.

(Embodiment 1)
1 is a longitudinal sectional view of a refrigerator according to Embodiment 1 of the present invention, and FIG. 2 is a schematic front view of a duct of the refrigerator according to Embodiment 1 of the present invention. Moreover, FIG. 3 is the perspective view which looked at the vegetable compartment of the refrigerator of the embodiment from the front, FIG. 4 is the figure which looked at the principal part in the vegetable compartment of the refrigerator of the embodiment from the back, and FIG. FIG. 6 is a plan view of the deodorizing means and the sterilizing filter of the refrigerator according to the embodiment. FIG.

  As shown in the figure, a refrigerator 300 according to the present embodiment is a refrigerator 300 that includes a double door, and includes a plurality of storage compartments in a heat insulating box 301 serving as a box body.

  A plurality of storage compartments in the refrigerator 300 are a refrigerator compartment 302, an ice making room 305, a first freezing room 306 attached to the ice making room 305 from the top, and a second freezing room arranged therebelow. 303 and a vegetable room 304 arranged at the bottom.

  At the front opening of the refrigerator compartment 302, a rotary heat insulating door 307 filled with foam heat insulating material such as urethane is provided.

  In addition, the ice making room 305, the first freezing room 306, the second freezing room 303, and the vegetable room 304 are each provided with a heat insulating plate 308 as a front plate of the drawer, so that there is no leakage of cold air. Is sealed.

  The heat insulating box 301 is a box formed by filling a heat insulating material such as hard foam urethane between the outer box and the inner box. The heat insulation box 301 insulates the inside of the heat insulation box 301 from the periphery.

  The refrigerated room 302 is a storage room that is maintained at a low temperature that does not freeze for refrigerated storage. The lower limit of the specific temperature is usually set at 1 to 5 ° C.

  The vegetable room 304 is a storage room that is set to a temperature that is equal to or slightly higher than that of the refrigerated room 302 because foodstuffs such as eggplant and carrots that are vulnerable to low temperatures and easily cause low-temperature failures are also stored. Specifically, it is set at 2 ° C to 7 ° C.

  The first and second freezing rooms 306 and 303 are storage rooms set in a freezing temperature zone. Specifically, although it is normally set at −22 to −18 ° C. for frozen storage, it may be set at a low temperature of −30 ° C. or −25 ° C., for example, to improve the frozen storage state. . Further, the first freezer compartment 306 having a small capacity in the upper stage may be a quick freezer compartment provided with an aluminum plate or a cold storage material.

  The ice making room 305 is a storage room in which an ice making machine (not shown) is provided and ice is made by the ice making machine, and the ice is stored in the same freezing temperature compartment as the first and second freezing rooms 306 and 303. Is arranged.

  The cooling system of the refrigerator 300 is a refrigeration cycle that is a so-called vapor compression type cooling circuit, and a compressor 314, a condenser (not shown), a decompressor (not shown), and an evaporator 320 are sequentially and hermetically connected in an annular manner. And it is comprised by enclosing refrigerant | coolant, such as refrigerating machine oil and R600a, inside. The compressor 314 is provided in a machine room in which the rear top surface of the heat insulating box 301 is recessed, and the condenser is a pipe that is closely attached to the inner side of the outer box of the heat insulating box 301. The decompressor is embedded in a heat insulating material and connected to an evaporator 320 provided inside the warehouse.

  The evaporator 320 as a cooling means is disposed in a cooling chamber 315 provided on the back of the first and second freezing chambers 306 and 303 and the ice making chamber 305 together with a cooling fan 321 and a defrosting heater (not shown). .

  In the refrigeration cycle, high-temperature and high-pressure refrigerant is discharged by the operation of the compressor 314, and after the heat is radiated by the condenser and liquefied, the low-temperature and low-pressure liquefied refrigerant is sent to the evaporator 320 by a decompressor such as a capillary. By exchanging heat with the air inside the heat insulating box 301, the refrigerant evaporates and low temperature cold air is generated. The refrigerant evaporated in the evaporator 320 flows into the compressor 314 again, is compressed again, and a high-temperature and high-pressure refrigerant is discharged. At this time, since the low-temperature refrigerant flows in the refrigerant pipe returning from the evaporator 320 to the compressor 314, the refrigerant is brought into contact with the capillary so as to be able to exchange heat, and the refrigerant inside the capillary is cooled, thereby improving the refrigerating capacity. Sometimes.

  By repeating the operation of such a refrigeration cycle, an action of a heat pump that releases and cools the heat inside the heat insulating box 301 to the outside is realized.

  In order to exchange heat between the low-temperature evaporator 320 and the heat inside the heat insulation box 301, a circulation path through which air is circulated is formed inside the heat insulation box 301. Specifically, the cold air cooled by the evaporator 320 is forced into a blowing state by the cooling fan 321 and is carried to each room through a duct provided between each storage room and the heat insulating box 301. The chamber is cooled, passed through the suction duct and returned to the evaporator 320 again. Note that the cooling air is circulated by a single cooling fan 321.

  The refrigerator 300 includes a circulation path through which the relatively low temperature cold air circulates and the first and second freezing chambers 303 and 306, a refrigerating room 302 and a vegetable room in which the relatively high temperature cold air circulates. The circulation path that circulates through the refrigerating room 302 and the vegetable room 304 controls the air circulation by the damper 323 at the entrance of the refrigerating room 302.

  The vegetable compartment 304 is a circulation path that is supplied after cooling and circulating in the refrigerator compartment 302. Therefore, it is possible to set the eye temperature slightly higher than that of the refrigerator compartment 302 without using a control device such as the damper 323.

  The cold air cooled by the evaporator 320 passes through the cold room discharge duct 329a, which is a discharge duct into which the cold air flows into the cold room, from the lower side to the upper side, and passes through the discharge port 330 opened at the upper part of the cold room 302 to be refrigerated. It is discharged into the chamber 302. The cold air that has passed through the refrigerator compartment 302 is sucked into a recovery port 331 that opens at the lower part of the refrigerator compartment 302. Next, the cold air sucked into the recovery port 331 passes through the refrigerating room return duct 337, and the discharge port 336 of the vegetable room discharge duct 338, which is a discharge duct through which the cold air provided on the back of the vegetable room 304 flows into the vegetable room. Is discharged into the vegetable compartment 304. Finally, the cold air that has passed through the vegetable compartment 304 returns to the evaporator 320 again. The above is the circulation path between the cold storage room 302 and the vegetable room 304.

  In the vegetable compartment 304, an upper vegetable case 339 and a lower vegetable case 340, which are internal cases, are provided so as to be able to be pulled out, and the vegetable compartment discharge duct 338 is cooled from the rear of the lower vegetable case 340 downward. It is provided with an opening so as to guide it.

  The vegetable room discharge duct 338 is provided with a deodorizing means or a sterilizing filter 335a which is a deodorizing means or an antibacterial means, and deodorizes and sterilizes the cold air after passing through the refrigerator compartment.

  As described above, in the present embodiment, as shown in FIGS. 1 to 6, the discharge duct flowing into the storage chamber included in the subsequent stage from the storage chamber through which the cold air generated by the cooling means first passes is as follows. A vegetable room discharge duct 338 is provided with deodorizing means and a sterilization filter 335a.

  Specifically, a resin-made duct cover 334 is detachably attached to a region inside the warehouse where the vegetable room discharge duct 338 extends to the vegetable room 304, and the inner wall surface on the back surface of the duct cover 334, That is, the deodorizing means and the sterilizing filter 335a are attached along the inner wall surface of the air passage through which the cold air to the vegetable room 304 circulates, and the large area side of the deodorizing means and the sterilizing filter 335a is licked in the flow direction of the cold air. In addition, it is configured to circulate with less resistance.

  The deodorizing means and the sterilizing filter 335a, which are deodorizing means and sterilizing means, are provided in the vicinity of the discharge port 336 in the vegetable room discharge duct 338, and are a sheet-like filter made of fibers kneaded with activated carbon. In order to reduce this, the deodorizing means and the sterilization filter 335a are arranged in parallel with the wall surface of the vegetable room discharge duct 338 so as not to hinder the flow of cold air. In addition, the sheet-like filter may have a surface shape of minute protrusions and irregularities in order to increase the surface area.

  By providing such deodorizing means and the sterilization filter 335a, it is possible to deodorize and sterilize the cold air circulating in the refrigerator 300 immediately before flowing into the vegetable compartment 304. In addition, since the normal filter is installed so as to block the path through which the cold air flows, almost all of the flowing cold air can be deodorized and sterilized, so that the pressure loss of the cold air flow when passing through the filter is large. The cold room discharge duct 329a blows up cold air from below and circulates it into the cold room 302 with dynamic pressure by the cooling fan 321. Therefore, if a filter that serves as a flow resistance is arranged in the cold room discharge duct 329a, pressure loss is caused. Is large and causes a lack of cold air flow.

  By providing such a filter with a large pressure loss not at the upper stage of the flow of the refrigerating chamber 302 but at the latter stage, the pressure loss can be reduced, the blowing power of the cooling fan 321 can be reduced, and the cooling fan 321 can be downsized. It will be possible, and it will be easy to secure the air volume necessary for the circulation of cold air, and it will contribute to noise reduction.

  The deodorizing means and the sterilizing filter 335a according to the present embodiment capture the bacteria, spores, odor molecules, etc. present in the cold air, and can realize the deodorization and sterilization by decomposing the organic substance. It is a sterilization means, and is composed of activated carbon, a deodorizing catalyst, a metal-based microbial control material, or the like.

  In this embodiment, the sterilization means is composed of a silver-based sterilization material (for example, silver oxide) to improve the sterilization performance, and in particular, deodorization using an enzyme having an excellent ability to decompose odors unique to foods. A catalyst is used.

  Specifically, odor components and bacteria contained in the introduced cold air are captured on the surface of the deodorizing means and the sterilization filter 335a. The trapped odor components and bacteria are deodorized and sterilized by oxidative degradation and sterilization by silver oxide.

  In particular, a nitrogen-based deodorization catalyst is used for decomposing fish-based odors, and a sulfur-based deodorization catalyst is used for decomposing vegetable-based odors such as onions.

  By forming the deodorizing means and the sterilizing filter 335a using the three different types of sterilizing materials as described above, in the refrigerator in which a plurality of types of bacteria are likely to be generated, the odor is different depending on each bacterium and odor type. The sterilization material can reduce the activity of bacteria contained in the circulated cool air and provide a storage space with a high sterilization effect. In addition, by providing not the upper stage of the flow of the storage chamber but the latter stage, the pressure loss is reduced, and further, a duct (refrigeration room return duct 337) that constitutes the air path as the sheet-like deodorizing means and the sterilizing filter 335a. Etc.) along the inner wall surface, cold air containing odors and bacteria flows to lick the large surface, and it is possible to achieve the sterilization effect while suppressing the airflow resistance that becomes the resistance of the flow Therefore, it is possible to provide a refrigerator with excellent deodorizing and sterilizing performance that has reduced pressure loss, improved cooling air circulation efficiency, and saved energy.

  In order to further improve the effect, a photocatalyst may be carried on the deodorizing means and the sterilizing filter 335a, and an LED may be provided near the deodorizing means and the sterilizing filter 335a for irradiation. Thus, among other photocatalysts, it is possible to suppress the LED cost by providing a photocatalyst that reacts the LED with a visible light wavelength in particular, and it is possible to suppress the material deterioration in the vicinity and to understand the operation state at a glance. .

  Next, operation | movement of the refrigerator 300 by the above structure is demonstrated.

  The cold air blown from the cooling fan 321 passes through the cold room discharge duct (cold air circulation duct) 329 a and is discharged into the cold room 302 from the discharge port 330. In the refrigerator compartment 302, food is generally taken in and out, and the doors are opened and closed more frequently than other rooms. Foods such as sugar beets are also taken in and out, and odors (organic substances, etc.) of outside air and stored food, bacteria and spores flow in. It's easy to do.

  Cold air containing these odors and bacteria is sucked into the recovery port 331 and introduced into the refrigerator compartment return duct 337. The introduced cool air flows and passes through the deodorizing means and the largest surface of the sterilizing filter 335a. At this time, odors, bacteria, etc. contained in the cold air are captured and decomposed by the activated carbon of the filter 335a.

  The cold air that has passed through the filter 335a becomes clean cold air that has been deodorized and sterilized, and is blown out into the vegetable compartment 304 through the discharge port 336.

  With the above configuration, the vegetable room 304 in the subsequent stage is not cooled directly with cool air containing germs and odors in the storage room of the refrigerating room 302, but is cooled with clean deodorized and sterilized clean air. Transfer of odor can be suppressed. Further, it is possible to suppress the transfer of germs and odors such as food and dust falling from the refrigerator compartment 302 into the refrigerator compartment return duct 337 that is a connected air passage.

  Further, the filter 335a installed in the vegetable room discharge duct 338 of the vegetable room 304 in the subsequent stage is directly connected to the fan in the duct as compared with the installation in the refrigerator room discharge duct 329a of the refrigerator room 302 where the dynamic pressure of the fan 321 acts directly. By installing the filter 335a in the vegetable room discharge duct 338 that does not have 321, the air path resistance can be reduced. Thus, the filter 335a to the vegetable room discharge duct 338 which does not have the fan 321 directly in the duct, and the vegetable room discharge duct 338 is more uniform in the refrigerator than the refrigerator compartment return duct 337 which is a connected air passage. The air passage is enlarged to blow out the air and the flow velocity is reduced. As described above, the deodorizing and sterilizing filter 335a is provided in the portion where the flow velocity is the slowest in the duct immediately before entering the vegetable compartment 304, that is, the cross-sectional area is large. Since the cold air passes, the deodorization of the cold air and the contact time with the sterilization filter 335a become longer, and the deodorization and sterilization performance is further improved. Further, the air flow resistance can be further reduced by reducing the flow velocity.

  Thus, the storage room included in the rear stage of the refrigerating room 302 which is the storage room through which the cold air generated by the evaporator 320 as the cooling unit first passes through the deodorizing and sterilizing filter 335a as the deodorizing unit or the sterilizing unit. This is provided in a vegetable room discharge duct 338 which is a discharge duct flowing into the vegetable room 302.

  In this way, in the cold air circulation path, the air passage resistance is hardly affected, and the cold air circulation efficiency is maintained, and the second and subsequent storage chambers in the cold air flow direction from the cooling means, that is, the subsequent storage chambers are deodorized and sterilized. Is possible.

  Furthermore, the vegetable compartment 302, which is a storage chamber included in the rear stage of the refrigeration chamber 302, which is the storage chamber through which the cold air generated by the evaporator 320, which is the cooling means, first passes, is lower in the gravity direction than the refrigeration chamber 302. Since the circulation path from the refrigerating chamber 302 flows in the direction of gravity, the flow loss can be reduced by the deodorization and disinfection filter 335a, and the air path resistance can be reduced. It is done.

  The deodorizing means or the sterilizing means is provided in a discharge duct that flows into a storage chamber that is included in a later stage than the storage chamber through which the cold air generated by the cooling means first passes.

  As a result, in the cold air circulation path, it is difficult to influence the air path resistance, and even if disinfecting means is arranged in the storage chamber, the cooling air circulation efficiency is maintained, and the second and subsequent positions in the cold air flow direction from the cooling means. It becomes possible to deodorize and disinfect the storage chamber.

  Furthermore, the deodorizing and sterilizing filter 335a is constituted by a sheet-like filter, and is parallel to the wall surface of the vegetable room discharge duct 338, that is, in parallel with the cold air flow so as not to disturb the cold air flow of the deodorizing means and the sterilizing filter 335a. Since it arrange | positions, an air path resistance can be suppressed compared with the case where it arrange | positions perpendicularly | vertically to a flow. Furthermore, since a filter-fixed frame is not required in the air passage, the air passage resistance can be further reduced. Furthermore, when dust or dust in the refrigerator compartment 302 is mixed in the air passage which is the subsequent circulation path in which the air in the refrigerator compartment 302 circulates, the filter 335a is clogged and the air passage resistance. Does not hinder the flow of cold air.

  Even if the deodorizing means and the sterilization filter 335a capture a lot of odors and bacteria and become temporarily saturated, they are close to the user's face and nose and used by looking inside. Since it is provided not in the refrigerator compartment 302 but on the rear surface outside the case of the vegetable compartment 304 that is pulled out and used, it is possible to prevent the user from feeling unpleasant odors. In particular, since the filter 335a is arranged at the innermost part of the lowermost stage, the above-mentioned action can be expected most.

  Furthermore, since the high-temperature compressor 314 is not disposed in the vicinity of the filter 335a, the filter 335a itself and the air in the vicinity are not warmed compared to the surroundings, so that odor desorption due to temperature changes is suppressed. Can do.

  In this embodiment, the filter 335a is provided in the duct vegetable room discharge duct 338. However, the same effect can be obtained by providing the filter 335a on the wall surface through which the cool air flows.

  In the present embodiment, the filter 335a is provided in the discharge portion. However, the same effect can be obtained as long as cold air flows in the outer peripheral portion of the vegetable compartment case. For example, the back of the lower case 340 or the bottom of the vegetable compartment 304 inside.

  INDUSTRIAL APPLICABILITY The present invention can be used for a refrigerator, and is particularly suitable for a refrigerator that stores food or the like at a relatively high temperature. It can also be applied to air cleaners and air conditioners.

The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention Duct front schematic diagram of the refrigerator of the same embodiment The perspective view which looked at the vegetable compartment of the refrigerator of the embodiment from the front The figure which looked at the principal part in the vegetable compartment of the refrigerator of the embodiment from the back Front view of deodorizing means and sterilizing filter of refrigerator of the same embodiment Plan view of deodorizing means and sanitizing filter of refrigerator of same embodiment Partial longitudinal sectional view of a conventional refrigerator equipped with sterilization means

Explanation of symbols

300 Refrigerator 301 Insulation box (box body)
302 Cold room (storage room)
303 Second freezer room (storage room)
304 Vegetable room (storage room)
305 Ice making room (storage room)
306 First freezer room (storage room)
307 Door (door body)
308 Heat insulating plate 314 Compressor 315 Cooling chamber 320 Evaporator (cooling means)
321 Cooling fan 323 Damper 329a Refrigeration room discharge duct (discharge duct)
330 Discharge port 331 Collection port 335a Deodorizing means and sterilizing filter (deodorizing means or sterilizing means)
336 Discharge port 337 Refrigeration room return duct 338 Vegetable room discharge duct (discharge duct)
339 Upper vegetable case (case inside)
340 Lower vegetable case (case inside)

Claims (2)

A heat insulating box that forms a plurality of storage chambers, a door that can be freely opened and closed at the opening of each storage chamber of the box body, a cooling means that generates cool air for cooling the storage chamber, and circulating the cool air Air blowing means, an upper storage chamber through which the cool air generated by the cooling means first passes, a lower storage chamber located below the upper storage chamber in the direction of gravity, and the cold air that has passed through the upper storage chamber A lower storage chamber discharge duct provided for discharging to the lower storage chamber, and a deodorizing means or a sterilizing means ,
The lower storage chamber discharge duct is disposed on the back side of the lower storage chamber,
The lower storage chamber discharge duct is configured not to have the air blowing means,
The deodorizing means or the sterilizing means is composed of a sheet-like filter,
The refrigerator in which the deodorizing means or the sterilizing means is arranged in parallel with a wall surface of the lower storage chamber discharge duct . The lower storage chamber is provided with a case inside, and the air channel discharge part in which the deodorizing means or the sterilizing means is arranged is provided on a back surface portion of the case, and is opened toward a lower part outside the case. The refrigerator according to claim 1 .