JP6419439B2 - Storage - Google Patents

Description

  Embodiments of the present invention relate to storage.

  Conventionally, the CA (Controlled Atmosphere) storage method includes a gas replacement method that is widely used in the food industry, a vacuum method that reduces oxygen by reducing the pressure, and a polymer electrolyte membrane that reduces oxygen in the hypoxia chamber. For example, a polymer electrolyte method, an adsorption method using an oxygen adsorbent and the like.

JP 2010-14305 A

  In the oxygen reduction apparatus as described above, when the user opens the oxygen reduction chamber, oxygen in the air flows into the oxygen reduction chamber, and the oxygen concentration becomes approximately the same as the concentration in normal air. In this case, until the next oxygen reduction operation is performed, the oxygen reduction state cannot be maintained, and there is a problem that the stored items in the oxygen reduction chamber cannot be stored with good freshness.

  Therefore, an object of the present invention is to provide a refrigerator that can maintain a reduced oxygen state in a reduced oxygen chamber over a long period of time by performing the reduced oxygen operation at an appropriate time.

An embodiment of the present invention includes a hypoxic chamber for storing food in a hypoxic state, a hypoxic device for reducing the oxygen reducing chamber in a hypoxic state, and a storage as a life mode grasping means for grasping a user's life mode Door opening / closing detection means, a control unit for controlling the oxygen reduction device, and a timer for measuring time, wherein the control unit controls the oxygen reduction device according to the lifestyle of the user grasped by the lifestyle grasping means. is intended to control, the number of times of detecting the opening of doors by the door opening and closing detecting means within 24 hours to detect more hours than a predetermined number of times, in a time zone going back a predetermined time from time of beginning of the time slot It is a storage that does not operate the oxygen reduction device .

The longitudinal cross-sectional view of the refrigerator of Embodiment 1 of this invention. The longitudinal cross-sectional view of an oxygen reduction apparatus. The disassembled perspective view of an oxygen reduction unit. The exploded perspective view of an oxygen reducing device. The perspective view of a front fixing member. The perspective view of a back fixing member. The longitudinal cross-sectional view seen from the front of a water supply apparatus. The refrigerator block diagram. The longitudinal cross-sectional view of the refrigerator of Embodiment 2 of this invention. The longitudinal cross-sectional view of the refrigerator of Embodiment 3 of this invention.

  Hereinafter, an oxygen reduction device 200 for a refrigerator according to an embodiment will be described with reference to the drawings.

Embodiment 1

  The refrigerator 10 of Embodiment 1 is demonstrated based on FIGS. The refrigerator 10 of this embodiment has an oxygen reduction chamber 100, and the oxygen reduction chamber 100 has an oxygen reduction device 200.

(1) Structure of refrigerator 10 The structure of the refrigerator 10 is demonstrated based on FIG. FIG. 1 is a longitudinal sectional view as seen from the side of the entire refrigerator 10.

  The cabinet 12 of the refrigerator 10 is a heat insulation box, and is formed of an inner box and an outer box, and a heat insulating material is filled between the inner box and the outer box. The inside of the cabinet 12 has a refrigerator compartment 14, a vegetable compartment 16, a small freezer compartment 18 and a freezer compartment 20 in order from the top, and an ice making room is provided beside the small freezer compartment 18. A heat insulating partition 36 is provided between the vegetable compartment 16, the small freezer compartment 18 and the ice making compartment. The refrigerator compartment 14 and the vegetable compartment 16 are partitioned by a horizontal partition 38. A double door 14a is provided in front of the refrigerator compartment 14, and drawer doors 16a, 18a and 20a are provided in the vegetable compartment 16, the small freezer compartment 18, the freezer compartment 20 and the ice making compartment, respectively. Further, the double door 14a and the drawer-type doors 16a, 18a, and 20a are provided with push-in type door switches 14b, 16b, 18b, and 20b as door opening / closing detection means, respectively. Detects whether open or closed.

  A machine room 22 is provided at the bottom of the back surface of the cabinet 12, and a compressor 24 and the like constituting the refrigeration cycle are placed thereon. A control plate 26 is provided on the upper back of the machine room 22.

  A refrigeration evaporator (hereinafter referred to as “R EVA”) 28 is provided from the lower back of the refrigerator compartment 14 to the back of the vegetable compartment 16, and a refrigeration blower (hereinafter referred to as “R fan”) 30 is provided below the evaporator. Is provided. The R EVA 28 and the R fan 30 are disposed in an R EVA chamber 17 formed by the EVA cover 15. The R-eva 28 is provided with a tray 54 for collecting defrost water generated by the R-eva 28.

  A freezing evaporator (hereinafter referred to as “F-eva”) 32 is provided in the F-evaporation chamber 29 from the back of the small freezer 18 to the back of the freezing chamber 20, and a freezing blower (hereinafter referred to as “F”) is provided above it. 34) is provided. The cold air cooled by the R evaporator 28 is sent to the refrigerator compartment 14 and the vegetable compartment 16 by the R fan 30. The cold air cooled by the F-evapor 32 is blown by the F fan 34 to the small freezer 18, ice making room, and freezer 20.

  A refrigerating room sensor (hereinafter referred to as “R sensor”) 31 for detecting the temperature inside the refrigerating room 14 is provided on the back surface of the refrigerating room 14. A refrigeration sensor (hereinafter referred to as “F sensor”) 35 for detecting temperature is provided.

  As shown in FIG. 1, the refrigerator compartment 14 is provided with a plurality of shelves 40, and a chilled chamber 44 having a drawer-type chilled container 42 is provided at the lower part. The chilled chamber 44 is a low temperature chamber and stores meat and fish. A plurality of door pockets 46 are provided on the back surface of the door 14 a of the refrigerator compartment 14. The vegetable compartment 16 is a space in which the interior is cooled to the refrigeration temperature together with the refrigerator compartment 14, and a drawer-type vegetable container 48 is provided therein and is a suitable space for storing vegetables.

  The oxygen-reducing chamber 100 is suspended by a plurality of suspension members 110 on the partition body 38 that corresponds to the ceiling of the vegetable compartment 16. Inside the oxygen reduction chamber 100, an oxygen reduction container 102 is provided so that it can be pulled out. A door 104 is provided in front of the oxygen reduction container 102, and the oxygen reduction chamber 100 is sealed by the door 104. On the rear surface of the oxygen reduction chamber 100, an oxygen reduction device 200, which will be described in detail later, is attached.

(2) Oxygen reduction device 200
The oxygen reduction device 200 includes a case 204 having heat insulating properties and an oxygen reduction unit 202 housed therein. The oxygen reduction unit 202 will be described with reference to FIGS. In FIGS. 2 to 4, the thickness of each member is thin, but the thickness is illustrated in an enlarged manner for easy understanding.

  A polymer electrolyte membrane (hereinafter simply referred to as “electrolyte membrane”) 206 is provided in the vertical direction, an anode 208 is provided at the rear of the electrolyte membrane 206, and a cathode 210 is provided at the front of the electrolyte membrane 206. . The cathode 210 is a laminate of a carbon catalyst and carbon paper. Further, platinum catalyst is supported on the anode 208 and the cathode 210, respectively. The electrolyte membrane 206, the anode 208, and the cathode 210 are integrally joined using a hot press or the like to form a hypoxic cell. An anode current collector 212 is provided behind the anode 208, and a cathode current collector 214 is provided in front of the cathode 210. Both current collectors 212 and 214 have slit-like openings 216 and 218, respectively, through which gas passes. The anode current collector 212 applies positive current to the anode 208, and the cathode current collector 214 performs negative current to the cathode 210. Both current collectors 212 and 214 are energized from electric wires (not shown). In addition, an insulator 220 is provided between the current collectors 212 and 214 in order to prevent the current collectors 212 and 214 from contacting each other. The insulator 220 has a frame shape, and the electrolyte membrane 206, the anode 208, and the cathode 210 are accommodated therein.

  A water supply sheet 222 made of a nonwoven fabric is disposed behind the anode current collector 212 on the anode 208 side.

  A plate-like spacer 211 is disposed between the anode current collector 212 and the water supply sheet 222. The spacer 211 has a plurality of slit-shaped water supply openings 213. The spacer 211 has a thickness of 1 mm, and forms a certain space A between the anode current collector 212 and the water supply sheet 222.

  The members stacked in order as described above are sandwiched and fixed by a pair of front and rear rear fixing members 224 and a front fixing member 226. The rear fixing member 224 disposed on the anode 208 side has a storage recess 228 for storing the stacked members, and a groove 230 is provided on the upper portion to project the protruding pieces of both current collectors 212 and 214. . In addition, a slit-like opening 232 through which gas passes is opened at the center of the rear fixing member 224.

  The front fixing member 226 attached to the cathode side has a plate shape, and has a slit-like opening 234 through which gas passes in the center. As shown in FIG. 2, the slit-shaped opening 234 is inclined so as to become narrower as it is later, unlike the cross-sectional area on the front side and the cross-sectional area on the rear side. This is to make it easier to send air to the cathode current collector 214.

  As shown in FIG. 3, the rear fixing member 224 and the front fixing member 226 are screwed by screws (not shown). A unit in which these members are integrated is referred to as an “oxygen reduction unit 202”. Note that the protruding pieces of both current collectors 212 and 214 protrude from the upper part of the oxygen reduction unit 202, and the water supply sheet 222 hangs from the lower part.

(3) Case 204
As shown in FIG. 4, the oxygen reduction unit 202 described above is accommodated inside a case 204 having a box-shaped heat insulating property. As shown in FIGS. 4 to 6, the case 204 includes a rectangular parallelepiped front case 236, a rear case 238, a frame-like middle case 240 sandwiched between the front case 236 and the rear case 238. . A front case 236 is arranged on the cathode side of the oxygen reduction unit 202, a rear case 238 is arranged on the anode side, and the front case 236, the rear case 238, and the middle case 240 are not shown in the state in which the oxygen reduction unit 202 is stored. Screwed.

  The front case 236 will be described with reference to FIGS. A square-shaped reaction recess 244 is provided at the center of the rear surface of the front case 236 having heat insulation properties. Further, a groove-shaped upper flow path 246 is provided from the upper surface of the reaction recess 244 toward the upper surface of the front case 236, and an upper vent hole 248 is opened on the upper surface of the front case 236. Further, a groove-like lower flow path 250 is provided downward from the lower surface of the reaction recess 244, and a lower vent hole 252 is opened on the lower surface of the front case 236. Then, as shown in FIG. 2, a rectangular parallelepiped space B is formed between the cathode current collector 214 on the cathode side and the front wall of the front case 236 by the reaction recess 244.

  Next, the middle case 240 will be described with reference to FIG. A front fixing member 226 of the oxygen reduction unit 202 is housed in the central portion 242 of the frame-shaped middle case 240.

  Next, the rear case 238 will be described with reference to FIGS. A storage recess 254 that can store the rear fixing member 224 of the oxygen reduction unit 202 is provided in the center of the front surface of the rear case 238. Grooves 256 and 258 from which the protruding pieces protrude are provided. An exhaust recess 260 is further provided on the rear surface of the storage recess 254, and the lower surface of the exhaust recess 260 has an inclined surface that inclines so as to approach each other and communicates with the exhaust port 262. The exhaust port 262 opens on the lower surface of the rear case 238.

  The case 204 in which the oxygen reduction unit 202 is stored is attached to the rear surface of the container storage unit 104 of the oxygen reduction chamber 100. This attachment method will be described with reference to FIG.

  At the center of the rear surface of the container storage unit 104, a cubic storage holding unit 264 projects toward the storage side. The storage case 264 stores the front case 236 of the case 204 from the rear. Therefore, the upper hole 266 and the lower hole 268 are opened at positions corresponding to the upper ventilation hole 248 and the lower ventilation hole 252 that are opened on the upper surface and the lower surface of the front case 236.

  Since the case 204 protrudes from the rear surface of the container storage unit 104, the cover 270 is covered so as to cover the protruding portion. The cover 270 is made of a synthetic resin and has a shape that covers the entire rear case 238 of the case 204. The cover 270 is provided with current collector openings 278 and 278 through which both current collectors 212 and 214 protrude. In addition, an exhaust port 280 communicating with the exhaust port 262 of the rear case 238 is opened.

(4) Water supply device 300
Next, the water supply apparatus 300 is demonstrated based on FIG. 2 and FIG.

  The water supply apparatus 300 has a water supply main body 302, and the water supply main body 302 is a horizontally long rectangular parallelepiped box. The water supply main body 302 is vertically divided by a partition wall 304 inside thereof, and an upper portion constitutes a water purification compartment 306 and a lower portion constitutes a suction section 308. A water supply pipe 152 is connected to the upper surface of the left end portion of the water supply main body 302, that is, the upper surface of the water purification section 306. The defrost water generated from the R EVA 28 of the refrigerator 10 is fed into the water supply pipe 152 via the tray 54.

  As shown in FIG. 7, the partition wall 304 is inclined downward from a portion to which the water supply pipe 152 is connected, and a water supply hole 310 leading to the suction section 308 is formed at the right end portion. A purified water section 312 made of an ion exchange resin is provided inside the purified water section 306. By providing this water purifier 312, it is possible to remove the influence of the quality of the defrost water supplied from the R EVA 28, and to prevent the oxygen reduction unit 202 from deteriorating. That is, the defrost water is frost adhering to the R EVA 28 and is collected in the drain pan, and therefore contains metal ions. Therefore, since there is a possibility of promoting the hydrolysis of the synthetic resin fibers constituting the water supply sheet 222, the provision of the water purification unit 312 can remove the influence of the quality of the defrost water.

  The suction section 308 has a water storage tank 314 for storing the water supplied from the water supply hole 310. Further, a drain pipe 154 is provided at the left end of the suction section 308. A partition wall 316 is provided between the drain pipe 154 and the water storage tank 314. The defrost water supplied from the water supply hole 310 is accumulated in the water storage tank 314. The water storage tank 314 is recessed at the center, and the lower part of the water supply sheet 222 of the oxygen reduction unit 202 described above is immersed, and the water supply sheet 222 sucks up the accumulated water. When the amount of water in the water storage tank 314 increases and exceeds the partition wall 316, the water is drained from the drain pipe 154 to an evaporating dish (not shown). In the water supply main body 302 which is a horizontally long rectangular parallelepiped, the suction section 308 protrudes forward from the water purification section 306, and the water supply sheet 222 is drawn from the ceiling surface protruding forward from the suction section 308.

(5) Electrical configuration of refrigerator 10 Next, the electrical configuration of the refrigerator 10 will be described based on the block diagram of FIG.

  The control board 26 is provided with a control unit 70 composed of a microcomputer and a timer 72 for measuring time. The control unit 70 includes a compressor 24, a three-way valve 62 provided in the refrigeration cycle, an R fan 30, and an F fan. 34, R sensor 31, F sensor 35, door switches 14b, 16b, 18b, 20b, timer 72, and oxygen reduction device 200 are connected.

  The three-way valve 62 is a valve that switches between supplying the refrigerant to the R-eva 28 or the F-eva 32 in the refrigeration cycle.

(6) Operation state of oxygen reduction device 200 The operation state of the oxygen reduction device 200 will be described.

  First, when the refrigerator 10 is turned on, the control unit 70 starts energizing both the current collectors 212 and 214.

  Next, as shown in FIGS. 2 and 5, the air in the oxygen reduction container 106 is supplied through the lower vent 252 of the oxygen reduction chamber 100, the downstream passage 250, the space B, and the opening 234 of the front fixing member 226. Since both the current collectors 212 and 214 are energized, oxygen is reduced from the inflowing air. In the anode 208 and the cathode 210, the oxygen reduction reaction as shown in the following formulas (1) and (2) is performed.

Anode: 2H ₂ O → O ₂ + 4H ⁺ + 4e ⁻ (1)

Cathode ... O ₂ + 4H ⁺ + 4e ⁻ → 2H ₂ O (2)

Explaining this oxygen reduction reaction formula, water vapor from the water supply sheet 222 passes through the space A and is electrolyzed at the anode 208 to form hydrogen ions (proton H ⁺ ). The hydrogen ions move through the electrolyte membrane 116. It reaches the cathode 210 and reacts with oxygen inside the oxygen-reducing chamber 100 to generate water and consume oxygen. This reduces oxygen and allows food to be stored in CA.

(7) Operation control of oxygen reduction apparatus 200 The timing which starts CA storage is demonstrated.

  Although the oxygen reduction device 200 starts operating when the refrigerator 10 is turned on, the controller 70 ends the energization upon detecting that a predetermined time (for example, 1 hour) has elapsed since the energization started.

  In addition, the control unit 70 measures the number of times the drawer door 16a of the vegetable room 16 having the oxygen reduction chamber 100 is opened and the time for 24 hours after the refrigerator 10 is turned on, and measures the time for one day (24 hours). ) To calculate the time when the door is not open.

  Further, the data obtained by detecting the opening / closing of the door 16a is accumulated over a plurality of days, and the time zone in which the door 16a is not opened within 24 hours or the number of times of opening is less than a predetermined number is detected. The time zone in which the door 16a is difficult to be opened by the user is regarded as a time zone, and the other time zones are regarded as time zones in which the door 16a is easily opened. A time zone in which the time zone in which the door 16a is difficult to open is calculated for a predetermined time or longer is calculated, and the operation of the oxygen reduction device 200 is started when the current time is in this time zone.

  For example, from 0 o'clock to 1 o'clock (0 o'clock), 1 o'clock to 2 o'clock (1 o'clock), ... from 23 o'clock to 24 o'clock (0 o'clock) (23 o'clock) One day (24 hours) is divided into 24 time zones by one hour, and time zones are set. Here, when the time when the door 16a is opened within 24 hours is, for example, 3 times of 6:30, 11:45, and 18:00, it is in the 6 o'clock range and 11 o'clock in the divided 24 hours. The time zone of the table and the 18:00 range is the time zone when the door 16a is opened, and is considered as the time zone when the door 16a is easily opened. From 5 o'clock to 5 o'clock, the door 14a is regarded as being difficult to open.

  In this case, the time period in which the door 16a is difficult to open for a predetermined time or longer (for example, 2 hours or longer) is from 7 o'clock to 10 o'clock, 12 o'clock to 17 o'clock, 19 o'clock It is the time zone from 5 to 5 o'clock. Therefore, the oxygen reduction device 200 is not operated during the time zone when the door 16a at 6 o'clock, 11 o'clock, 18 o'clock is easy to open, and the state where the door 16a is difficult to open continues for more than a predetermined time at 7 o'clock. Control is performed so that the operation of the oxygen reduction device 200 is started when the time zone is from 10 to 10 o'clock, from 12 o'clock to 17 o'clock, and from 19 o'clock to 5 o'clock.

(8) Effect Thereby, in order to operate the oxygen-reducing device 200 according to the lifestyle of which the user is likely to open the refrigerator 10 in which time zone, it is easy to maintain the oxygen-reduced state for a long time, and the oxygen-reducing chamber The food freshness in 100 can be maintained in a good state.

  Also, the door opening / closing operation by the user is often assumed to be performed a plurality of times in a short period of time, such as when shopping and storing food or preparing food. As described above, by prohibiting the operation of the oxygen reduction device 200 during the time when the door 16a is likely to be opened, the oxygen reduction device can be operated even when the user repeatedly opens and closes the door a plurality of times in a short time. The operation 200 is not performed for a predetermined time, and it is difficult for the situation where the reduced oxygen state is released in a short time.

  In addition to the time zone during which the door 16a is likely to be opened (in the above example, 6 o'clock, 11 o'clock, 18 o'clock) as a time zone during which the oxygen reduction apparatus 200 is not operated, a predetermined time zone is used. A time zone (for example, 5 o'clock, 10 o'clock, 17 o'clock in the above specific example) that goes back in time (for example, 1 hour) may be a time zone during which the oxygen reduction apparatus 200 is not operated. In this way, by prohibiting the operation of the oxygen reduction device 200 even during a time period that goes back a predetermined time from the time period when the door 16a is likely to be opened, the reduced oxygen state is not released in a short time, and is reduced once. The reduced oxygen state can be maintained for a long time by the operation of the oxygen device 200, and an efficient operation can be performed.

  Further, as described above, when the time zone in which the door 16a is difficult to open continues for a predetermined time or more, the oxygen reduction device 200 may be operated every time, and the door 16a is hardly opened in one day. The operation of the oxygen reduction device 200 may be started only when the time zone lasts the longest time zone (in the above specific example, from 19:00 to 5 o'clock).

  Although embodiment mentioned above set the time zone when a user is easy to use the refrigerator 10 from opening of the door 16a about the vegetable compartment 16 which is a storage room provided with the oxygen reduction chamber 100, the oxygen reduction chamber 100 is not provided. You may set the time zone when a user is easy to use the refrigerator 10 from opening of the door of a storeroom.

  In addition, instead of using the door sensors 14b, 16b, 18b, and 20b, the R sensor 31 and the F sensor 35 are used to measure the time during which the internal temperature suddenly rises, and it is estimated that the door has been opened and the door is opened. It may be judged that it was a time zone.

  Thereby, the oxygen reduction apparatus 200 can be appropriately operated by grasping the lifestyle of the user by using a door sensor or a sensor for measuring the temperature of the storage room provided in the refrigerator 10 in advance. Therefore, since it is not necessary to provide a new sensor or the like for the purpose of grasping the lifestyle, the refrigerator 10 can be manufactured without increasing the number of manufacturing steps or greatly increasing the cost.

  In addition, the embodiment has been described by taking the case where the operation of the oxygen reduction device 200 is performed once a day as an example, but the number of operations of the oxygen reduction device 200 is not limited to once a day, and is operated a plurality of times a day. May be.

Embodiment 2

  The second embodiment does not detect and control the opening of the door 16a of the vegetable compartment 16 but controls the oxygen reduction device 200 by grasping the lifestyle from the illuminance in the environment where the refrigerator 10 is installed. Different from 1.

  As shown in FIG. 9, the refrigerator according to the second embodiment includes an illuminance sensor 400 at the hinge portion of the door 14 a outside the refrigerator 10 and in front of the ceiling. The illuminance sensor 400 is connected to the control unit 70, and determines the time zone during which the oxygen reduction device 200 is operated from the illuminance detected by the illuminance sensor 400.

  When the illuminance detected by the illuminance sensor 400 is high, the lighting of the room in which the refrigerator is installed is lit even in the time zone from morning to night or at night, that is, the user can use the refrigerator 10 It can be determined that it is a time zone with high characteristics. On the other hand, when the detected illuminance is low, it is a night time zone and the lighting of the room where the refrigerator is installed is not lit, that is, the time zone when the user is less likely to use the refrigerator 10. It can be judged. Therefore, more specifically, when the illuminance detected by the illuminance sensor 400 is higher than a predetermined value (for example, 30 lux), the oxygen reduction device 200 is not operated, and the illuminance is lower than the predetermined value (for example, 30 lux). Makes the oxygen reduction device 200 operable. More specifically, when the state in which the illuminance is lower than a predetermined value continues for a predetermined time (for example, 1 hour), it is determined that the user is unlikely to use the refrigerator 10, and the oxygen reduction apparatus 200 is operated. Start.

  Thereby, the life mode of the user is estimated from the brightness of the room in which the refrigerator 10 is installed regardless of the door opening and closing, and the oxygen reduction device 200 is operated in a time zone in which the user is unlikely to open the refrigerator 10. Therefore, the oxygen reduction chamber 100 can be maintained in the oxygen reduction state for a long time.

Embodiment 3

  The third embodiment is different from the above-described embodiment in that it is detected whether the door 104 of the oxygen reduction chamber 100 is opened and the oxygen reduction apparatus 200 is controlled based on the detection result.

  As shown in FIG. 10, a push-in type door switch 100b, which is a door opening / closing detection means for detecting opening / closing of the door 104 for closing the oxygen reduction chamber 100, is provided behind the oxygen reduction container 102 which can be pulled out freely. The measured time zone is measured in the same manner as in the first embodiment. For example, if the door 104 is opened twice at 11:20 and 19:30 in 24 hours, it is 11:00 in the time zone in which one day (24 hours) is divided into 24 hours. , 19 o'clock time zone is the time zone when the door 104 is opened, these time zones are regarded as the time zone when the door 104 is easy to open, from 12 o'clock to 18 o'clock, 20 o'clock to 10 o'clock The time zone until the platform is regarded as a time zone when the door 104 is difficult to open.

  In this case, the time zone in which the door 104 is not opened lasts the longest time zone from the 20:00 to 10:00 hours. Therefore, the operation of the oxygen reduction device 200 is not performed at least in the time zone between 11:00 and 19:00, and the time zone that is a predetermined time (for example, 1 hour) before this time zone, and the door 104 is not opened most. Control is performed so that the operation of the oxygen reduction device 200 is started at 20:00, which can be maintained for a long time.

  Accordingly, since the oxygen reduction device 200 is operated in accordance with the life mode in which the user is likely to open the oxygen reduction chamber 100 at what time zone, the oxygen reduction state can be easily maintained for a long time. The freshness of the food can be kept in a good state.

  The door opening detection means is not limited to the door switch 100b, and a weight sensor may be provided in the oxygen reduction chamber 100, and the time when the door 104 is opened may be estimated from the time when the weight has changed. Alternatively, a photographing unit that photographs the inside of the oxygen-reducing chamber 100 may be provided, and it may be determined that the door 104 is opened when it is determined from the photographed image that the storage amount has changed.

  In addition, the embodiment has been described by taking the case where the operation of the oxygen reduction device 200 is performed once a day as an example, but the number of operations of the oxygen reduction device 200 is not limited to once a day, and is operated a plurality of times a day. Alternatively, the operation may be started when the opening of the door 104 is detected after the oxygen reduction apparatus 200 is operated.

Example of change

  In the above embodiment, the oxygen-reducing chamber 100 is provided on the ceiling of the vegetable room 16. Alternatively, the oxygen-reducing chamber 100 may be provided in the chilled chamber 44. This is because the fats and oils contained in the meat stored in the chilled chamber 44 are prevented from being oxidized and are suitable for storing meat and the like.

  Moreover, although the said embodiment demonstrated the refrigerator provided with the cooling function as an example, it cannot be overemphasized that it is applicable even if it is a store | warehouse | chamber which does not have cooling functions, such as a storage for exclusive use of a rice bin and vegetables.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Refrigerator, 14 ... Cold room, 16 ... Vegetable room, 70 ... Control part, 72 ... Timer, 100 ... Hypoxic chamber, 102 ... Hypoxic container, 104 ... Door, 200 ... Oxygen reduction device, 400 ... Illuminance sensor

Claims (5)

A hypoxic chamber for storing food in a hypoxic state;
An oxygen reduction device for reducing oxygen in the oxygen reduction chamber;
A door opening / closing detection means of the storage as a life aspect grasping means for grasping a user's life aspect,
A control unit for controlling the oxygen reduction device;
With a timer to measure the time,
Wherein the control unit is for controlling the decrease oxygen device by life aspects of the user grasped by the life aspect grasping unit, the number of the predetermined number of senses opening of the door by the door opening and closing detecting means in the 24-hour A storage that detects more time zones and does not operate the oxygen reduction device in a time zone that is a predetermined time before the start time of the time zone . Wherein the control unit, the number of times of detecting the opening of doors by the door opening and closing detecting means within the 24 hours by the door opening and closing detecting means detects the time zone is less than the predetermined number of times, so as to include between bands when this The storehouse according to claim 1 which operates said oxygen reduction device.   Furthermore, the storage of Claim 1 provided with the illumination intensity sensor which detects the illumination intensity outside a storage as the said lifestyle aspect grasping means.   The storage according to claim 3, wherein the control unit controls the oxygen reduction device not to operate when the illuminance detected by the illuminance sensor is higher than a predetermined value. It has a vegetable room suitable for storing vegetables,
The storage according to any one of claims 1 to 4, wherein the oxygen-reducing chamber is located in the vegetable chamber.

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