JP2017227433A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator capable of grasping a state of oxygen inside an oxygen reduction chamber.SOLUTION: A refrigerator comprises an oxygen reduction chamber provided inside a cabinet, an oxygen reduction device for reducing oxygen inside the oxygen reduction chamber, a display unit 17 for displaying an operation state of the oxygen reduction device, and oxygen concentration measurement means that measures oxygen concentration inside the oxygen reduction chamber. The display unit displays the oxygen concentration measured with the oxygen concentration measurement means.SELECTED DRAWING: Figure 16

Description

  Embodiments of the present invention relate to refrigerators.

  Conventionally, CA (Controlled Atmosphere) storage methods include a polymer electrolyte method in which oxygen is reduced using a polymer electrolyte membrane, and a method in which oxygen is reduced by a vacuum pump.

JP 2004-218924 A JP 2011-202898 A JP 2010-243072 A JP 2010-210171 A Japanese Patent No. 3056578

  In the CA storage method as described above, there is a problem that even if the user looks into the oxygen-reducing chamber, the oxygen state cannot be grasped.

  Then, in view of the said problem, embodiment of this invention aims at providing the refrigerator which can grasp | ascertain the state of oxygen in a hypoxic chamber.

  An embodiment of the present invention is a refrigerator having an oxygen reduction chamber provided in a cabinet, an oxygen reduction device that reduces oxygen in the oxygen reduction chamber, and a display unit that displays an operation state of the oxygen reduction device. is there.

It is a front view of the refrigerator of this embodiment. It is a front view of a vegetable room. It is a top view of a vegetable room. It is a side view of the state which attached the storage holder to the vegetable compartment. It is the sectional view on the AA line in FIG. It is a side view of the state which is going to attach a hypoxic chamber to the storage holder of a vegetable room. It is a side view of the state which attached the hypoxic chamber to the storage holder of a vegetable room. It is the BB sectional view taken on the line in FIG. It is a side view of the state which is going to attach an oxygen reduction container to the oxygen reduction chamber of a vegetable room interior. It is a side view of the state which attached the oxygen reduction container to the oxygen reduction chamber of the vegetable room. It is a front view of an oxygen reducing device. It is a longitudinal cross-sectional view of the state which attached the oxygen reduction apparatus to the oxygen reduction chamber. It is the longitudinal cross-sectional view seen from the front of the water supply apparatus in an oxygen reduction apparatus. It is a disassembled perspective view of an oxygen reduction unit. It is a block diagram of a refrigerator. This is the display state of the display unit. It is a front view of the state which provided the color meter in the door of the oxygen reduction chamber. It is a figure explaining a color meter. It is a front view of the state which provided the indicator in the door of the hypoxic chamber.

BEST MODE FOR CARRYING OUT THE INVENTION

  Hereinafter, the refrigerator 10 of one Embodiment is demonstrated based on FIGS. The refrigerator 10 of this embodiment has an oxygen reduction device 100.

(1) Refrigerator 10
The refrigerator 10 is demonstrated based on FIG. FIG. 1 is a longitudinal sectional view 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 22 is provided beside the small freezer compartment 18. A heat insulating partition 24 is provided between the vegetable compartment 16, the small freezer compartment 18 and the ice making compartment 22. The refrigerator compartment 14 and the vegetable compartment 16 are partitioned by a horizontal partition 26. Open doors 14a and 14b are provided in front of the refrigerator compartment 14, and drawer doors 16a, 18a, 20a and 22a are provided in the vegetable compartment 16, the small freezer compartment 18, the freezer compartment 20 and the ice making compartment 22, respectively. Is provided.

  An operation panel 15 is provided on the front surface of the left door 14a of the refrigerator compartment 14, and a display unit 17 made of a liquid crystal display device is provided on the front surface of the right door 14b.

  A control board having a control unit 19 is provided on the back surface of the cabinet 12.

(2) Vegetable room 16
Next, the vegetable compartment 16 is demonstrated based on FIG.2 and FIG.3. FIG. 2 is a front view of the vegetable compartment 16, and FIG. 3 is a plan view of the vegetable compartment 16.

  A vegetable container 28 that can be pulled forward together with the door 16a is provided at the bottom of the vegetable compartment 16. On the upper left side of the vegetable compartment 16, an oxygen reduction chamber 30 is provided. The oxygen reduction chamber 30 will be described in detail later.

(3) Hypoxic chamber 30
Next, the oxygen reduction chamber 30 will be described with reference to FIGS.

  As shown in FIG. 10, the oxygen reduction chamber 30 is fixed by being suspended from a storage holder 34 attached below the partition body 26.

  The oxygen reduction chamber 30 has a rectangular parallelepiped shape, and the front surface is open. The oxygen reduction chamber 30 is provided inside the oxygen reduction chamber 30 so that it can be pulled out, and a door 38 that also serves as a front plate of the oxygen reduction chamber 36 closes the front opening of the oxygen reduction chamber 30.

  An oxygen reduction device 100 is attached to the back surface of the oxygen reduction container 36.

(3-1) Storage holder 34
First, the storage holder 34 will be described in detail with reference to FIGS. 4 and 5.

  The storage holding body 34 has a horizontal plate 40, and the horizontal plate 40 is suspended from the horizontal partition 26 by a plurality of column-shaped hanging tools 96 protruding upward. There are nine suspension tools 96, three in the front-rear direction and three in the left-right direction, so that the storage holder 34 can be fixed in a suspended state (see FIG. 2). A left holding surface 42 and a right holding surface 44 extend downward from both sides of the horizontal plate 40. A rear holding surface 46 extends downward from both sides of the rear end portion of the horizontal plate 40 (see FIG. 5). The height of the left holding surface 42, the right holding surface 44, and the rear holding surface 46 is about 1/3 of the height of the rectangular parallelepiped oxygen reduction chamber 30.

  A support plate 48 is provided at the center of the rear end of the horizontal plate 40 downward (see FIG. 5). The height of the support plate 48 is longer than the height of the oxygen reduction container 36, and a rectangular insertion port 50 is opened at the center of the support plate 48. The oxygen reduction device 100 is inserted and attached to the insertion port 50 from the rear.

  A support piece 52 projects forward from the lower end of the support plate 48, and a support claw 54 is provided at the tip thereof (see FIG. 4).

  Fixed rails 56 are provided on the inner surfaces of the left holding surface 42 and the right holding surface 44 along the front-rear direction. The fixed rail 56 is composed of an upper rail piece 58 and a lower rail piece 60 that are formed in a horizontal line. The distance between the front portions of the upper rail piece 58 and the lower rail piece 60 is larger than the distance between the rear portions.

  Rectangular openings 62 and 62 penetrate through upper portions of the left and right rear holding surfaces 46 (see FIG. 5).

(3-2) Hypoxic chamber 30
Next, the oxygen reduction chamber 30 will be described with reference to FIGS.

  The oxygen-reducing chamber 30 has a rectangular parallelepiped shape as described above, and has an upper surface 64, a left surface 66, a right surface 68, a lower surface 70, and a rear surface 72, and only the front surface is open. A pair of left and right protrusions 74 project from the rear end of the upper surface 64 toward the rear. These protrusions 74 and 74 are fitted into a pair of left and right openings 62 and 62 of the rear holding surface 46 of the storage holder 34.

  On the left surface 66 and the right surface 68 of the oxygen reduction chamber 30, a movable rail 76 is provided on the ridge along the front-rear direction. The height dimension of the front part of the movable rail 76 is formed larger than the height dimension of the rear part. The movable rail 76 is engaged with the fixed rail 56 and is slid to fix the oxygen reduction chamber 30 to the storage holder 34.

  A locking member 78 is provided at the front center of the left surface 66 and the right surface 68 of the oxygen reduction chamber 30. The locking member 78 is provided with a pair of upper and lower elastic holding pieces 82 from the front portion of the main body 80 fixed to the left surface 66 with screws, and a spherical fixing portion 84 is provided at the tip of the elastic holding piece 82. ing. The elastic holding pieces 82 protrude from the main body 80 so as to spread in the vertical direction.

(3-3) Oxygen reduction container 36
Next, the oxygen reduction container 36 is demonstrated based on FIG.9 and FIG.10.

  The oxygen reduction container 36 has a box shape and an upper surface that is open, and can store food such as vegetables therein. Engagement pieces 86 projecting rearward are provided at the centers of both sides of the door 38. The distal end portion of the engagement piece 86 has an arrow shape, and is inserted between the pair of upper and lower elastic holding pieces 82 of the locking member 78 described above, and is engaged with the recessed portion 88 on the rear side of the arrow shape engagement piece 86. Match.

  Inside the left surface 66 and the right surface 68 of the oxygen reduction chamber 30, a second fixed rail 90 provided in the horizontal direction is provided. The rollers 92 provided at the rear portions of both side surfaces of the oxygen reduction container 36 slide on the second fixed rail 90 so that the oxygen reduction container 36 can be pulled out in the front-rear direction. A locking protrusion 94 protruding in the front-rear direction is provided at the rear portion of the lower surface 70 of the oxygen reduction chamber 30. The locking protrusion 94 also serves as a rib and engages with the support claw 54 provided on the support plate 48 of the storage holder 34 described above.

  The door 38 in the front part of the oxygen reduction container 36 is sized to cover the entire opening on the front surface of the oxygen reduction chamber 30, and a gasket 39 is provided around the rear surface of the door 38 to open the oxygen reduction chamber 30. A flange portion 83 is provided at the front edge portion. Therefore, as shown in FIG. 10, when the door 38 is closed, the gasket 39 is brought into contact with the flange portion 83 of the oxygen reduction chamber 30 and the inside of the oxygen reduction chamber 30 is sealed. Further, a handle 85 projects forward from the door 38.

(4) Oxygen reduction device 100
Next, the structure of the oxygen reduction device 100 will be described with reference to FIGS.

  As shown in FIG. 11, the oxygen reduction device 100 uses a polymer electrolyte membrane method, and includes a box-type unit case 102 having heat insulation properties and a water supply device 104.

  The box-shaped unit case 102 has a substantially cubic shape, and the oxygen reduction unit 106 is accommodated therein. The oxygen reduction unit 106 also serves as an oxygen concentration measuring device as will be described later. A substantially rectangular opening 135 connected to the oxygen reduction chamber 30 is opened on the front surface of the unit case 102, and an exhaust port 137 for diffusing oxygen is opened on the rear surface of the unit case 102. Further, the front portion of the unit case 102 is inserted and fixed to the insertion port 50 of the support plate 48 of the oxygen reduction chamber 30.

  The water supply device 104 is located below the unit case 102 and behind the support plate 48.

(5) Oxygen reduction unit 106
The oxygen reduction unit 106 is demonstrated based on FIG.12 and FIG.14. 12 is a longitudinal sectional view of the oxygen reduction device 100, and FIG. 14 is an exploded perspective view of the oxygen reduction unit 106. As shown in FIG. In FIGS. 12 and 14, the actual thickness of each member is thin, but the thickness is enlarged in the drawings for easy understanding.

  A polymer electrolyte membrane (hereinafter simply referred to as “electrolyte membrane”) 116 is provided in the vertical direction, an anode layer 118 is provided at the rear of the electrolyte membrane 116, and a cathode layer 120 is provided at the front of the electrolyte membrane 116. ing. The electrolyte membrane 116 is made of Nafion. “Nafion” is a copolymer of fluororesin based on sulfonated tetrafluoroethylene, and is a polymer having ionic conductivity. Nafion does not move anions or electrons, only cations. The cathode layer 120 is a laminate of a carbon catalyst and carbon paper. The anode layer 118 and the cathode layer 120 carry platinum catalysts. The electrolyte membrane 116, the anode layer 118, and the cathode layer 120 are integrally joined using a hot press or the like. A positive current collector 122 is provided behind the anode layer 118, and a negative current collector 124 is provided in front of the cathode layer 120. Both current collectors 122 and 124 are mesh-like titanium films whose surfaces are plated with platinum. The current collector 122 performs positive energization on the anode layer 118, and the current collector 124 provides negative energization on the cathode layer 120. Do. Both current collectors 122 and 124 are energized from electric wires 160 and 162. Further, an insulator 125 is provided between the current collectors 122 and 124 so that the current collectors 122 and 124 do not contact each other. The insulator 125 has a frame shape, and the electrolyte membrane 116, the anode layer 118, and the cathode layer 120 are accommodated therein.

  A water repellent layer 126 is provided behind the positive current collector 122. The water repellent layer 126 is provided inside the frame-shaped gasket 126. Further, a water repellent layer 130 is also provided in front of the negative current collector 124, and this water repellent layer 130 is also provided inside the frame-shaped gasket 131. As the water repellent layers 126 and 130, polymer films are used. Although many polymer films are water-repellent, it is necessary to allow water vapor to pass through. Therefore, depending on the material, it is necessary to adjust the thickness. As a property of allowing water vapor to pass without passing through water, PTE film or A nonwoven fabric using a water-repellent resin is preferable.

  A sheet-like water supply body 128 is disposed behind the water-repellent layer 126. The water supply body 128 is a non-woven fabric and is formed from synthetic resin fibers. As a material of the synthetic resin fiber, for example, polypropylene having a glass transition temperature equal to or higher than the temperature at the time of operation of the oxygen reduction device 100 is used.

  The members stacked in order as described above are sandwiched and fixed by a pair of front and rear fixing members 132 and 134. The rear fixing member 132 disposed on the anode layer 118 side has a rectangular parallelepiped shape, and has an exhaust port 136 having a rectangular cross section at the bottom. As shown in FIG. 12, the exhaust port 136 penetrates in the front-rear direction and corresponds to the position of the exhaust port 137 of the unit case 102. On the other hand, the front fixing member 134 attached to the cathode layer 120 also has a rectangular parallelepiped shape, and has an air inlet 138 in the center. The intake port 138 has a vertical slit shape and corresponds to the position of the opening 135 of the unit case 102 and the insertion port 50 of the support plate 48.

  The oxygen reduction unit 106 is comprised by the above member. The fixing member 132 and the fixing member 134 are fixed by several screws (not shown).

  The thickness in the front-rear direction of the fixing member 132 and the fixing member 134 is, for example, 10 mm, the thickness of the water supply body 128 is, for example, 0.2 mm, the thickness of the water-repellent layer 126 and the water-repellent layer 130 is, for example, 0.2 mm, The thickness of the gasket 131 is, for example, 0.2 mm, the thickness of the anode layer 118 is, for example, 0.25 mm, the thickness of the electrolyte membrane 116 is, for example, 0.2 mm, the thickness of the cathode layer 120 is, for example, 0.25 mm, and the thickness of the insulator 126 is For example, the thickness of the current collector 122 and the current collector 124 is 0.7 mm, for example, 0.5 mm.

(6) Water supply device 104
Next, the water supply apparatus 104 is demonstrated based on FIGS.

  The water supply apparatus 104 has a water supply main body 140, and the water supply main body 140 is a horizontally long rectangular parallelepiped box. The water supply main body 140 is vertically divided by a partition wall 142 in the inside thereof, and an upper part constitutes a water purification section 144 and a lower part constitutes a suction section 146. A water supply pipe 148 is connected to the upper surface of the left end of the water supply main body 140, that is, the upper surface of the water purification section 144. The water supply pipe 148 is fed with defrosted water generated from the evaporator of the refrigerator 10 by a pump (not shown).

  As shown in FIG. 13, the water purification partition wall 142 is inclined downward from a portion to which the water supply pipe 148 is connected, and a water supply hole 150 leading to the suction partition 146 is formed at the right end portion. A purified water section 152 made of an ion exchange resin is provided inside the purified water section 144. By providing this water purifier 152, the influence of the quality of the defrost water supplied from the evaporator can be removed, and deterioration of the oxygen reduction unit 106 can be prevented. That is, the defrost water is frost adhering to the evaporator and is collected in the drain pan, and therefore contains metal ions. Therefore, there is a possibility that the hydrolysis of the synthetic resin fibers constituting the water supply body 128 may be defrosted. Therefore, the provision of the water purification unit 152 can remove the influence of the quality of the defrost water.

  The suction section 146 has a water storage part 154 for storing the water supplied from the water supply hole 150. Further, a drain pipe 156 is provided at the left end portion of the suction section 146. A partition wall 158 is provided between the drain pipe 156 and the water reservoir 154. The defrost water supplied from the water supply hole 150 is accumulated in the water storage unit 154. The water reservoir 154 is recessed at the center, and the lower part of the water supply body 128 of the oxygen reduction unit 106 described above is immersed, and the water supply body 128 sucks up the accumulated water. When the amount of water in the water reservoir 154 increases and exceeds the partition wall 158, the water is drained from the drain pipe 156 to an evaporating dish (not shown). In addition, in the water supply main body 140 which is a horizontally long rectangular parallelepiped, the suction section 146 protrudes forward of the water purification section 144, and the water supply body 128 protrudes from the ceiling surface protruding forward of the suction section 146.

(7) Electrical configuration of refrigerator 10 Next, the electrical configuration of the refrigerator 10 will be described with reference to FIG.

  The control unit 19 is connected to the operation panel 15 of the refrigerator 10, the display unit 17, the oxygen reduction unit 106, and the water supply device 104, and to the compressor 13, the refrigerator compartment 14, and the freezer compartment 20 for operating the refrigeration cycle. A temperature sensor 21 is provided.

  The control unit 19 turns the compressor 13 on / off or changes the rotation speed based on the temperature detected by the temperature sensor 21, so that the refrigerator compartment 14, the vegetable compartment 16, the small freezer compartment 18, the freezer compartment 20, and the ice making room 22. Is cooled to a predetermined temperature.

  In addition, the oxygen reduction unit 106 is controlled to reduce the inside of the oxygen reduction chamber 30, and the oxygen concentration in the oxygen reduction chamber 30 is measured based on the energization state of the current value to the electric wires 160 and 162 of the oxygen reduction unit 106.

(8) Method of assembling oxygen-reducing chamber 30 Next, an assembling method of the oxygen-reducing chamber 30 will be described with reference to FIGS.

  First, the oxygen reduction device 100 is attached to the support plate 48 of the storage holder 34.

  Secondly, as shown in FIGS. 4 and 5, the storage holding body 34 is screwed to the partition body 26 via nine hanging tools 96. The water supply pipe 148 and the drain pipe 156 are respectively connected to predetermined positions. Thereby, as shown in FIGS. 4 and 5, the storage holder 34 is suspended from the upper left portion of the vegetable compartment 16.

  Third, as shown in FIG. 6, the oxygen-reducing chamber 30 is slid and inserted into the storage holder 34 from the front of the vegetable chamber 16. In this case, the movable rails 76 provided on the left and right side surfaces 66 and 68 of the oxygen reduction chamber 30 are inserted between the upper rail piece 58 and the lower rail piece 60 of the fixed rail 56 and are slid. Since the rear part of the movable rail 76 is formed to be smaller in height than the front part, and the distance between the front part of the upper rail piece 58 and the lower rail piece 60 of the fixed rail 56 is larger than the distance between the rear parts. It is easy to insert the movable rail 76 into the fixed rail 56.

  Fourth, as shown in FIGS. 7 and 8, the oxygen reduction chamber 30 is inserted to the position of the support plate 48 of the storage holder 34. Then, the protrusion 74 of the oxygen reduction chamber 30 is fitted into the opening 62 of the support plate 48 and positioned and fixed. This positioning is both the front-rear direction and the left-right direction. Further, the front portion of the unit case 102 of the oxygen reduction device 100 provided in the storage holder 34 is inserted into the insertion port 50 provided in the back surface of the oxygen reduction chamber 30. As shown in FIGS. 7 and 8, three screw holes 98 are provided between the upper rail piece 58 and the lower rail piece 60 in the right holding surface 44, and the position of the movable rail 76 of the protrusion corresponding to the screw hole 98 is provided. In addition, three screw holes 99 are provided. Therefore, using the screw 97, the screw 97 is screwed into the screw hole 99 from the screw hole 98, and the oxygen reduction chamber 30 is screwed to the storage holder 34. As a result, the oxygen reduction chamber 30 is also fixed to the storage holder 34 in the front-rear direction and the left-right direction. Further, the support claw 54 at the tip of the support piece 52 extending from the lower end of the support plate 48 engages with an engagement protrusion 94 provided at the rear portion of the lower surface 70 of the oxygen reduction chamber 30, and moves in the front-rear direction. Movement is restricted.

  Fifthly, as shown in FIG. 9, the oxygen reduction container 36 is inserted into the opened front surface of the oxygen reduction chamber 30. In this case, the rollers 92 provided on both side surfaces of the oxygen reduction container 36 are engaged with the second fixed rails 90 provided on the inner surfaces of the left and right side surfaces 66 and 68 of the oxygen reduction chamber 30 and are slid rearward. .

  Sixth, as shown in FIG. 10, when the door 38 is closed, the interior of the oxygen reduction chamber 30 is sealed by the gasket 39. When the oxygen-reducing container 36 is slid rearward, the engagement pieces 86 protruding rearward from both side portions of the door 38 are engaged beyond the fixing portion 84 at the distal end portion of the elastic holding piece 82, and the door 38 is engaged. Is completely fixed in the closed state. Since the elastic holding piece 82 can move elastically in the vertical direction, when the user pulls the door 38 forward, the door 38 slides forward. As described above, the oxygen reduction chamber 30 can be assembled.

(9) Operation State of Oxygen Reduction Device 100 Next, the operation state of the oxygen reduction device 100 will be described with reference to FIGS.

  First, when the vegetables are stored in the oxygen-reducing container 36 and the oxygen-reducing container 36 is slid rearward to close the door 38, the oxygen-reducing chamber 30 is sealed.

  Next, the defrost water generated in the evaporator is supplied to the water supply device 104 via the water supply pipe 148. As shown in FIG. 13, the supplied defrost water is purified through the water purification section 144 inside the water supply device 104, and reaches the water storage section 154 in the suction section 146 through the water supply hole 150.

  Next, the water supply body 128 sucks up the water accumulated in the water storage unit 154.

  Next, foods such as vegetables stored in the oxygen reduction container 36 breathe to discharge carbon dioxide. Then, a sensor (not shown) detects the carbon dioxide and starts energizing the current collectors 122 and 124.

Next, as shown in FIG. 12, the air in the oxygen reduction container 36 is supplied through the insertion port 50 of the oxygen reduction chamber 30, the opening 135 of the unit case 102, and the intake port 138 of the fixing member 134, and the current collector Since the currents 122 and 124 are energized, oxygen reduction is performed from the air that flows in, and the oxygen reduction chamber 30 becomes the CA storage chamber. In the anode layer 118 and the cathode layer 120, reactions such as the following equations (1) and (2) are performed.

Anode layer 2H ₂ O → O ₂ + H ⁺ + 4e ⁻ (1)

Cathode layer: O ₂ + H ⁺ + 4e ⁻ → 2H ₂ O (2)

Explaining this reaction formula, water vapor that has passed through the water-repellent layer 126 from the water supply body 128 is electrolyzed at the anode layer 118 to form hydrogen ions, which move through the electrolyte membrane 116 and reach the cathode layer 120. Then, it reacts with oxygen inside the oxygen-reducing chamber 30 to generate water and consumes oxygen. Thereby, oxygen reduction is performed in the oxygen reduction container 36, and foodstuffs, such as vegetables, can be stored in CA.

  Next, as shown in FIGS. 12 and 14, oxygen generated in the anode layer 118 of the oxygen reduction unit 106 first passes through the exhaust port 136 of the fixing member 132 and the exhaust port 137 of the unit case 102 and is diffused.

(10) Operating State of Oxygen Concentration Measuring Device Next, a state in which the oxygen reduction unit 106 and the control unit 19 are operated as an oxygen concentration measuring device will be described.

As described above, the control unit 19 supplies oxygen to the wires 160 and 162 to reduce oxygen. The reaction formula in this case is the above formula (2). From the energized state in the above equation (2), the oxygen reduction rate Q can be calculated as in the following equation (3).

Q = (I / 4F) × 22400 × {(273.15 + T) /298.15}
... (3)

Where Q is the rate of oxygen reduction (cc / min), I is the current (A), F is the Faraday constant, and T (° C.) indicates the current internal temperature.

  The controller 19 calculates the oxygen concentration in the oxygen reduction chamber 30 by integrating the elapsed time (minutes) from the start of oxygen reduction by the oxygen reduction unit 106 with Q (cc / min).

(11) Display unit 17
Next, the role of the display unit 17 will be described with reference to FIG.

  In addition to the date, the current time, the internal temperature of the oxygen reduction chamber 30 and the internal humidity, the control unit 19 displays the oxygen concentration or the CA storage time (the food in the oxygen reduction chamber 30). And the time during which the oxygen reduction unit 106 performs the oxygen reduction operation before, during, or after the operation is displayed. .

  Before the operation, the control unit 19 displays “before operation” and a state where the oxygen concentration in the oxygen reduction chamber 30 is the same as that of the outside air.

  During operation, the control unit 19 displays “in operation”, the oxygen concentration in the oxygen reduction chamber 30, and the CA storage time, as shown in FIG.

  After the operation, the control unit 19 displays “after operation”, displays that the oxygen concentration has reached a preset oxygen concentration (for example, less than 10%), and also displays the CA storage time.

(12) Effect According to the above embodiment, since the operation state of the oxygen reduction apparatus 100 is displayed on the display unit 17, the user can immediately check the current state of oxygen reduction concentration and the presence or absence of operation. Therefore, food can be taken in and out based on the displayed contents.

  Moreover, since the display part 17 is installed in the door 14b of the refrigerator compartment 14, it can display at the height of a user's eyes | visual_point, and the state in a warehouse is judged even if there is no opening / closing operation | movement of the doors 14a and 14b. it can.

(13) Modified Example In the above embodiment, the polymer electrolyte membrane method is applied as a device for reducing oxygen inside the oxygen-reducing chamber 30, but instead, oxygen reduction may be performed using a vacuum pump. .

  In the above embodiment, the display unit 17 is provided on the door 14b. Instead, as shown in FIG. 17, a color meter 164 is provided on the front surface of the door 38 of the oxygen reduction chamber 30 to change the oxygen reduction concentration. Is displayed. For example, as shown in FIG. 18, the color meter changes from red, orange, yellow, green, blue, and purple, and the oxygen concentration is displayed as the color changes from red to purple. In addition, the preservation effect with respect to food will become large if oxygen concentration becomes low.

  Further, instead of the color meter 164, an indicator 166 for directly displaying the oxygen concentration may be attached to the door 38 of the oxygen reduction chamber 30 as shown in FIG.

  In addition, a lamp is provided on the operation panel 15 instead of the display unit 17, and lights up red before operation, yellow during operation, and blue after operation. Also by this, the user can grasp | ascertain easily the state inside the oxygen reduction chamber 30. FIG.

  In addition, after the user stores food in the oxygen reduction chamber 30, if the operation state of the oxygen reduction unit does not change from before the operation to during operation, the control unit 19 causes the display unit 17 to indicate that the oxygen reduction device 100 is abnormal. You may make it alert | report. In this case, the user can notify the user of the case where the door 38 is not completely closed when the food is stored in the oxygen reduction chamber 30, or the oxygen reduction device 100 is out of order.

  Further, a clock unit may be provided inside the control unit 19 so that the display unit 17 is not displayed during a preset night time (for example, from 11 pm to 5 am). This is because the user is less likely to use the refrigerator 10 at this night and saves power.

  Further, the control unit 19 may be provided with a clock means, and the operating state of the oxygen reduction unit 106 may be increased in a preset daytime period than in a nighttime period. That is, the energization amount of the current to the oxygen reduction unit 106 is increased. As a result, oxygen can be reduced more quickly. In this case, in order to display that oxygen reduction is increased, the display unit 17 may display that the oxygen reduction operation is strong.

  Moreover, as a method of displaying the oxygen reduction state of the oxygen reduction device 100, not only providing a display unit in the refrigerator 10, but also providing the refrigerator 10 with a communication function and transmitting the state to a mobile terminal such as a smartphone or tablet. Also good. The user can check the state of the oxygen reduction device 100 of the refrigerator 10 only by looking at the portable terminal, and can also store data collected in the portable terminal.

  In the above embodiment, the oxygen reduction unit 106 is used as an oxygen concentration measurement device. However, instead of this, an oxygen measurement sensor may be separately provided inside the oxygen reduction chamber 30.

  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, 12 ... Cabinet, 16 ... Vegetable room, 19 ... Control part, 26 ... Partition body, 30 ... Hypoxic chamber, 34 ... Storage holder, 36 ... Oxygen reduction container, 100 ... Oxygen reduction device

Claims (10)

A hypoxic chamber provided inside the cabinet;
An oxygen reduction device for reducing oxygen in the oxygen reduction chamber;
A display for displaying the operating state of the oxygen reduction device;
Refrigerator. The display unit displays that the oxygen reduction device is in an operation of reducing oxygen, or that the operation of reducing oxygen has been completed.
The refrigerator according to claim 1. The display unit displays that the oxygen reduction device is before the operation of reducing oxygen,
The refrigerator according to claim 1 or 2. The display unit informs that the oxygen reduction device is abnormal when the indication that the oxygen reduction device is before the operation of reducing oxygen continues for a predetermined time.
The refrigerator according to claim 3. Oxygen concentration measuring means for measuring the oxygen concentration inside the oxygen-reducing chamber,
The display unit displays the oxygen concentration measured by the oxygen concentration measuring means;
The refrigerator as described in any one of Claims 1 thru | or 4. A clock means,
During the night time set in advance by the clock means, the display unit stops the display.
The refrigerator according to any one of claims 1 to 5. A clock means,
When the time measured by the clock means is a preset daytime from a preset night time, the oxygen reduction device increases the operation of reducing oxygen;
The refrigerator according to any one of claims 1 to 5. When the oxygen reduction device increases the operation of performing oxygen reduction, the display unit displays the increase.
The refrigerator according to claim 7. The oxygen reduction apparatus uses a polymer electrolyte membrane method that performs oxygen reduction by passing an electric current.
The refrigerator according to any one of claims 1 to 8. Oxygen concentration measuring means for measuring the oxygen concentration inside the oxygen-reducing chamber,
The display unit displays the oxygen concentration measured by the oxygen concentration measuring means,
The oxygen concentration measuring means obtains the oxygen concentration from an integrated value of the current to the oxygen reduction device from the time the door of the oxygen reduction chamber is opened to the next time it is opened and closed.
The refrigerator according to claim 9.

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