JP6633947B2 - refrigerator - Google Patents

Description

  Embodiments of the present invention relate to a refrigerator.

  A storage container such as a vegetable container is provided in a storage room of the refrigerator. If the storage container is overfilled with stored items, the heat capacity of the entire stored item increases, and the stored items are hardly cooled. Therefore, for example, as described in Patent Document 1, a sensor for measuring the weight of the storage container is provided, and when the storage container is packed and the storage container becomes heavy, in order to quickly cool the storage item, Refrigerators have been proposed that increase the rotation frequency of a compressor or the rotation speed of a fan that circulates cool air.

  Also, if the shelves in the storage room are over-packed, the circulation of cold air in the storage room will be poor, and the storage items near the outlet of the cool air into the storage room will freeze, or the temperature sensor in the storage room will not work. There is a possibility that the cooling is performed before the stored material and the stored material is insufficiently cooled. Therefore, for example, as described in Patent Document 2, a sensor for measuring the weight of a shelf is provided, and when the shelves become heavier due to the packed contents, a cooling time is required to cool the entire storage. Refrigerators that reduce the rotation frequency of the compressor to increase the temperature of the cool air and reduce the number of rotations of the fan that circulates the cool air to reduce the amount of the cool air are circulated to prevent the storage from being partially frozen. Proposed.

JP 2013-120048 A JP 2013-11383 A

  By the way, many storage items are packed in the storage container, and the weight of the entire storage item becomes heavy, or the storage items are concentrated only in the central portion of the storage container, and a large weight is applied to the central portion of the storage container. If this occurs, the bottom of the storage container may bend downward, and the flow path of cool air below the storage container may be narrowed. When the flow path of the cool air on the lower side of the storage container becomes narrow, the circulation of the cool air in the refrigerator becomes worse, and the storage room is hardly cooled. Therefore, when the bottom of the storage container is bent and the flow path of the cool air below the storage container is narrowed, a countermeasure is required. However, in the conventional refrigerator, even if the bottom of the storage container is bent and the flow path of the cool air below the storage container is narrowed, it cannot be detected.

  In view of the above, an object of the present invention is to provide a refrigerator that can detect when a mounting portion such as a bottom portion of a storage container is bent and a flow path of cool air below the mounting portion is narrowed.

  The refrigerator of the embodiment is provided with a mounting portion on which a storage object is placed, and a cold air flow path below the mounting portion, in the storage room. A non-contact proximity sensor is provided.

The longitudinal section of refrigerator 10 of an embodiment. FIG. 2 is a diagram illustrating a cooling cycle according to the embodiment. FIG. 2 is a block diagram mainly showing a control unit 12 of the embodiment. The longitudinal section of vegetable room 21 of an embodiment. The figure which looked at the vegetable container 28 of embodiment from the lower part. (A) shows a state in which one detection piece 81 is provided on the bottom 28a, and (b) shows a state in which a plurality of detection pieces 81 are provided on the bottom 28a.

  FIG. 1 shows a refrigerator 10 of the present embodiment. The refrigerator 10 is provided with a cabinet 11 in which an outer box forming the outer shell of the refrigerator 10 and an inner box having a plurality of storage rooms are combined, and a heat insulating material is packed between the outer box and the inner box. The refrigerator 10 includes, as a plurality of storage rooms, a refrigerating room 20, a vegetable room 21 provided below the refrigerating room 20, an ice making room 41 and a small freezing room (hereinafter, referred to as left and right) provided below the vegetable room 21. The ice making room 41 and the small freezing room are referred to as an ice making room 41 and the like, and a freezing room 40 provided below the ice making room 41 and the like. The interiors of the refrigerator compartment 20 and the vegetable compartment 21 are refrigerated spaces that are cooled to a refrigeration temperature (for example, 2 to 3 ° C.), and the interiors of the ice making compartment 41 and the freezing compartment 40 are cooled to a freezing temperature (for example, -18 ° C. or lower). It is a frozen space. The refrigerated space and the frozen space are separated by a partition plate 39.

  A plurality of shelves 22 are provided in the refrigerator compartment 20. Further, a chilled chamber 23 is provided in a lower part of the refrigerator compartment 20. The inside of the chilled room 23 is a place where the inside of the refrigerator room 20 is kept at the lowest temperature. A drawable meat dish 24 is housed in the chilled chamber 23, and meat, fish, and the like are placed on the meat dish 24. A plurality of door pockets 26 for storing beverages and the like are provided inside the refrigerator compartment door 25 that closes the opening of the refrigerator compartment 20.

  Fixed rails (not shown) are provided on the left and right inner walls of the vegetable compartment 21, respectively. The vegetable compartment door 27 for closing the opening of the vegetable compartment 21 is provided with left and right moving rails (not shown) extending toward the interior of the vegetable compartment 21. The vegetable room door 27 can be moved forward and backward by moving the moving rail on the fixed rail, and the vegetable room door 27 can be opened by moving the vegetable room door 27 forward. A vegetable container 28 for storing vegetables and the like is provided in the vegetable room 21. The vegetable container 28 is a container having front and rear walls, left and right side walls, and a flat bottom 28a and opening upward. The bottom part 28a is a placement part on which a storage object is placed. The vegetable container 28 is supported by a moving rail, and is pulled out of the refrigerator when the vegetable room door 27 is opened. There is a gap below the vegetable container 28.

  Above the vegetable container 28 in the vegetable room 21, an oxygen-reducing chamber 29 is provided. The oxygen concentration in the oxygen reducing chamber 29 is reduced by an oxygen reducing device 30 provided behind the oxygen reducing chamber 29.

  The ice making chamber 41 is provided with an ice tray 42 for making ice, and an ice storage container 43 that is disposed below the ice tray 42 and stores the ice dropped from the ice tray 42. A pair of left and right support frames extending toward the inside of the ice making room 41 are provided on an ice making room door 44 closing the opening of the ice making room 41, and the ice storage container 43 is supported by these support frames. Therefore, the ice storage container 43 is pulled out of the refrigerator together with the opening operation of the ice making chamber door 44.

  A lower container 46 is provided in the freezer compartment 40, and an upper container 45 is provided above the storage space of the lower container 46. The upper container 45 is a container that has front and rear walls, left and right side walls, and a bottom and opens upward. The lower container 46 is also a container having front and rear walls, left and right side walls, and a flat bottom 46a and opening upward. The bottom part 46a is a placement part on which a storage object is placed. The lower container 46 has the same structure as the vegetable container 28 and is pulled out of the refrigerator together with the operation of opening the freezer compartment door 47. The upper container 45 can be pulled out by sliding on a fixed rail (not shown) provided on the left and right inner walls of the freezing compartment 40. There is a gap below the lower container 46.

  A refrigeration cooling chamber 60 is provided behind the refrigeration space. A refrigerator cooler 61 for generating cool air sent to the refrigerator room 20 and the vegetable room 21 and a cooling fan 62 for circulating cool air generated by the cooler 61 are housed in the refrigerator cooler 60. Have been. Further, a freezing cooling chamber 70 is provided behind the freezing space. Inside the freezing cooling room 70, there are provided a freezing cooler 71 for generating cool air sent to the ice making room 41 and the like and the freezing room 40, and a freezing fan 72 for circulating the cool air generated by the freezing cooler 71. It is stored.

  FIG. 2 shows a cooling cycle for generating cold air. The cooling cycle includes a compressor 64 for discharging a high-temperature and high-pressure vaporized refrigerant, a condenser 65 for radiating and liquefying the refrigerant flowing out of the compressor 64, and a switching valve 66 for switching a flow path of the refrigerant flowing out of the condenser 65. And In one flow path downstream of the switching valve 66, a refrigeration decompression device 63 and a refrigeration cooler 61 are provided. A refrigerating pressure reducing device 73 and a refrigerating cooler 71 are provided in the other flow path downstream of the switching valve 66. When the switching valve 66 is operated to open the flow path of the refrigerant from the condenser 65 to the refrigeration decompression device 63, cool air is generated in the refrigeration chiller 61, and the refrigerant flows from the condenser 65 to the refrigeration decompression device 73. When the flow path is opened, cool air is generated in the freezing cooler 71.

  As shown in FIG. 1, a duct 31 extending upward from the refrigeration cooling chamber 60 is provided behind the refrigeration chamber 20 to form a flow path for the cool air generated by the refrigeration cooler 61. . A plurality of outlets 32 for the cool air to the refrigerator compartment 20 are provided at a plurality of locations of the duct 31. In addition, a suction port 33 of cool air from the refrigerator compartment 20 to the refrigerator compartment 60 is provided at a rear position in the refrigerator compartment 20. In addition, an introduction path 35 that connects the refrigerator compartment 20 and the vegetable compartment 21 is provided in a partition plate 34 that partitions the refrigerator compartment 20 from the vegetable compartment 21. The introduction path 35 is open to, for example, a lower part in the refrigerator compartment 20 and an upper part in the vegetable compartment 21. Further, for example, in the lower part of the back of the vegetable compartment 21 (a place below the half height position in the vegetable compartment 21), preferably in a place below the half height position of the vegetable container 28, the vegetable compartment 21 is provided. A cooling air suction port 36 is provided to the cooling chamber 60 for cooling.

  In FIG. 1, the directions in which the cool air flows in the refrigerator compartment 20 and the vegetable compartment 21 are drawn by arrows. When the refrigeration blower fan 62 rotates, cool air generated in the refrigeration cooler 61 circulates in the vegetable compartment 21 and the vegetable compartment 21. Specifically, the cool air generated in the refrigerator 61 flows through the duct 31 and flows into the refrigerator compartment 20 through the outlet 32. The cool air that has flowed into the refrigerator compartment 20 cools the refrigerator compartment 20, and a part of the cool air returns to the refrigerator cool room 60 from the cool air suction port 33, and another part passes through the introduction passage 35 and the vegetable compartment. Flow into 21. Most of the cool air that has flowed into the vegetable compartment 21 flows into the vegetable container 28 and cools the vegetable container 28, and thereafter, ventilation holes are provided in the upper opening of the vegetable container 28 and the front wall or side wall of the vegetable container 28. If so, it goes out of the vegetable container 28 through the vent hole. Thereafter, the cool air passes under the vegetable container 28 and returns from the suction port 36 to the refrigeration cooling chamber 60. Thus, the space below the vegetable container 28 is a flow path for cool air.

  Further, as shown in FIG. 1, in order to form a flow path of the cool air generated in the freezing cooler 71, a cold air outlet 74 from the freezing cooling chamber 70 to the ice making chamber 41 and the like, And an outlet 75 for cool air from the refrigerator to the freezer compartment 40. In addition, a partition plate 76 that partitions the ice making room 41 and the freezing room 40 from each other is provided with an introduction path 77 that connects the ice making room 41 and the freezing room 40 to each other. The introduction path 77 is open to, for example, a lower part in the ice making chamber 41 and an upper part in the freezing chamber 40. In the freezer compartment 40, for example, at the lower portion of the rear surface (a location lower than half the height of the freezer compartment 40), preferably at a location lower than half the height of the lower container 46, a freezer compartment is provided. A cold air suction port 78 from 40 to the freezing cooling chamber 70 is provided.

  In FIG. 1, the directions in which the cool air flows in the ice making room 41 and the freezing room 40 are drawn by arrows. When the refrigerating fan 72 rotates, cool air generated in the refrigerating cooler 71 circulates in the ice making room 41 and the freezing room 40. Specifically, part of the cool air generated in the freezing cooler 71 flows into the interior of the ice making chamber 41 or the like from the outlet 74. The cool air that has flowed into the interior of the ice making room 41 or the like cools the interior of the ice making room 41 or the like and then flows into the freezing room 40 through the introduction path 77. In addition, part of the cool air generated in the freezing cooler 71 flows into the freezing compartment 40 directly from the outlet 75. Most of the cold air flowing into the freezing compartment 40 flows into the upper container 45 and the lower container 46 to cool the inside of these containers, and then to the upper opening of these containers and to the front wall or side wall of these containers. If a vent is provided, it exits these containers through the vent. Thereafter, the cool air passes under the lower container 46 and returns to the freezing cooling chamber 70 from the suction port 78. Thus, the space below the lower container 46 is a flow path for cool air.

  As shown in FIG. 3, the refrigerator 10 includes a control unit 12. The control unit 12 includes, for example, a switching valve 66, a refrigeration blower fan 62, a refrigerating blower fan 72, a compressor 64, a display unit 17 for displaying an operation state of the refrigerator 10 and the like, a speaker 18 for outputting sound and the like, and the like. Connected. The control unit 12 includes various detection units that detect the operation state of the refrigerator 10, such as a refrigeration temperature sensor 13 that measures the temperature in the refrigeration compartment 20, a refrigeration temperature sensor 14 that measures the temperature of the freezing compartment 40, The vegetable compartment door sensor 15 for detecting the open / closed state of the compartment door 27, the freezer compartment door sensor 16 for detecting the open / closed state of the freezer compartment door 47, and the capacitance type sensor 80 described below are electrically connected. . The control unit 12 operates the switching valve 66 to flow the refrigerant to the refrigeration cooler 61 or the refrigeration cooler 71 based on the detection results of these detection units, and rotates the blower fan through which the refrigerant flows. Circulate cold air. The control unit 12 also controls the rotation speed of the blower fan, the rotation frequency of the compressor 64, and the like. Various other components are electrically connected to the control unit 12 as necessary.

  As shown in FIG. 4, a proximity sensor is provided below the vegetable container 28 to detect the bottom 28a of the vegetable container 28 in a non-contact manner when the bottom 28a of the vegetable container 28 is bent and approaches. In this embodiment, the proximity sensor is a capacitance sensor 80. The capacitance type sensor can detect various objects such as synthetic resin, metal, glass, and wood. The capacitance type sensor includes a self capacitance type sensor and a mutual capacitance type sensor. The self-capacitance capacitive sensor has one electrode. When an object to be detected approaches this electrode, the capacitance between the object and the electrode changes. By detecting the change, the approach of the object to be detected is detected. On the other hand, a mutual capacitance type capacitive sensor has a transmission electrode and a reception electrode, and generates an electric field between these electrodes. When an object to be detected approaches these electrodes, part of the electric field is transferred to the object, and the capacitance of the electrodes changes. Then, by observing the change, the approaching object is detected. The capacitance type sensor 80 of the present embodiment may be of any type.

  The location where the capacitance-type sensor 80 is provided is a location facing the bottom 28a of the vegetable container 28 to be detected, and specifically, the bottom of the vegetable compartment 21. The capacitance type sensor 80 and the bottom portion 28a of the vegetable container 28 are opposed to each other with a flow path for cool air therebetween. The capacitance type sensor 80 may be embedded in the partition plate 39 forming the bottom of the vegetable compartment 21 so as not to protrude into the flow path of the cool air. In addition, it is desirable that the location where the capacitance type sensor 80 is provided is a location facing the center of the bottom 28 a of the vegetable container 28 in the bottom of the vegetable compartment 21. Here, the central portion of the bottom portion 28a of the vegetable container 28 is a portion that becomes the center of gravity of the bottom portion 28a of the vegetable container 28.

  It is desirable that a detection piece 81 be provided on the bottom 28a of the vegetable container 28. When the bottom portion 28a of the vegetable container 28 is bent and approaches the capacitance type sensor 80, the detected piece 81 has a smaller capacitance between the electrode and the electrode of the capacitance type sensor 80 than when there is no sensor. It is to increase the change. Since the magnitude of the change is affected by the material, it is desirable that the detected piece 81 be made of a material different from that of the bottom 28a of the vegetable container 28. For example, if the bottom 28a of the vegetable container 28 is made of synthetic resin, The piece 81 is preferably a metal piece (including a metal foil), particularly preferably an aluminum piece.

  The place where the detection piece 81 is provided is desirably at the center of the bottom 28a of the vegetable container 28, as shown in FIG. Further, as shown in FIG. 5B, a plurality of detected pieces 81 may be provided at a plurality of locations on the bottom 28 a of the vegetable container 28. Also in that case, it is desirable that one of the plurality of detected pieces 81 is provided at the center of the bottom 28 a of the vegetable container 28. Further, as shown in FIG. 4, it is desirable that the detection piece 81 be provided on the bottom surface side of the bottom portion 28a rather than on the top surface side. Further, it is desirable that the detected piece 81 (if there are a plurality of detected pieces 81, one of them) and the capacitance sensor 80 are vertically opposed.

  When an appropriate amount of stored material is evenly placed in the vegetable container 28, the bottom 28a of the vegetable container 28 does not bend, as shown by the solid line in FIG. However, when many storage items are packed in the vegetable container 28 or the storage items are concentrated only in the central portion of the vegetable container 28, the bottom portion 28a of the vegetable container 28 And approaches the capacitance type sensor 80. Then, the capacitance type sensor 80 detects the bottom portion 28a of the vegetable container 28. At this time, the flow path of the cool air on the lower side of the vegetable container 28 is narrowed. The controller 12 detects that the capacitance sensor 80 has detected the bottom 28a of the vegetable container 28, so that the bottom 28a of the vegetable container 28 is bent downward and the flow path of the cool air below the vegetable container 28 is narrowed. Detect that

  When detecting that the flow path of the cool air below the vegetable container 28 is narrowed, the control unit 12 controls to increase the ability to cool the inside of the vegetable room 21 and controls the flow of the cool air below the vegetable container 28. It is desirable to perform at least one of the control for notifying that the road has become narrow. Of course, the control unit 12 may perform both of these controls. These controls are called detection control. It is desirable that the detection control be continuously performed while the capacitance sensor 80 continues to detect the bottom portion 28a of the vegetable container 28.

  The control for increasing the ability to cool the vegetable compartment 21 includes, for example, control for increasing the rotation frequency of the compressor 64 and control for increasing the rotation speed of the refrigeration fan 62. When performing control to increase the ability to cool the inside of the vegetable compartment 21, the control unit 12 may perform only one of such controls (for example, control to increase the rotation frequency of the compressor 64), or a plurality of controls. Such control may be performed. When the control unit 12 performs control to increase the ability to cool the inside of the vegetable compartment 21, the inside of the vegetable container 28 is sufficiently cooled even if the flow path of the cool air below the vegetable container 28 is narrow.

  As the control for notifying that the flow path of the cool air on the lower side of the vegetable container 28 has been narrowed, for example, a control for displaying a notice on the display unit 17 as the notification means or a notification means And the like, for example, by controlling the speaker 18 to output this by voice or the like. In the control to be displayed on the display unit 17, for example, the notification content may be displayed in characters on a display, or a lamp provided in a portion where the notification content is described may be turned on. Further, in the control for outputting a sound or the like from the speaker 18, for example, the content of the notification may be played by a person's voice or a warning sound may be played. When performing control for notifying that the flow path of the cool air on the lower side of the vegetable container 28 has been narrowed, the control unit 12 performs any one of such controls (for example, a control for displaying the notification content in characters on a display). ) Alone or a plurality of such controls may be performed.

  In addition, instead of notifying that the cold air flow path below the vegetable container 28 has become narrow, the cause (the vegetable container 28 is too full of stored material or the stored material is concentrated in a part of the vegetable container 28). May be notified, or a countermeasure (reducing the storage in the vegetable container 28 or changing the way of storing the storage) may be notified. In short, it is only necessary that the user can recognize that it is necessary to reduce the amount of storage in the vegetable container 28 or change the way of storing the storage by notifying.

  The control of the above-described notification by the control unit 12 allows the user of the refrigerator 10 to notice that the cold air flow path below the vegetable container 28 has become narrow. When the user takes measures such as reducing the amount of storage in the vegetable container 28, the bending of the bottom portion 28a of the vegetable container 28 is corrected, and the cold air flow path under the vegetable container 28 is expanded, and the vegetable container 28 is opened. 28 is sufficiently cooled.

  Further, even if the detection state of the capacitance type sensor 80 changes while the vegetable room door sensor 15 detects that the vegetable room door 27 is open, the control unit 12 performs control before the change. It is desirable to continue. For example, it is assumed that the capacitance type sensor 80 continues to detect the bottom portion 28a of the vegetable container 28 before the vegetable room door 27 is opened, and the control unit 12 performs control at the time of detection. At that time, when the vegetable compartment door 27 is opened and the vegetable container 28 is subsequently pulled out of the refrigerator, the vegetable container 28 is pulled out from the position of the capacitance type sensor 80, and then the capacitance type sensor 80 does not detect the bottom 28a of the vegetable container 28. However, the change in the detection state of the capacitance type sensor 80 does not mean that the bending of the bottom portion 28a of the vegetable container 28 has been corrected. Therefore, even if the detection state of the capacitance type sensor 80 changes as described above, the control at the time of detection before the change of the detection state continues while the vegetable room door 27 is open. After the vegetable compartment door sensor 15 detects that the vegetable compartment door 27 has been closed, the control unit 12 performs control based on the actual detection state of the capacitance type sensor 80.

  Also, this is the case where the capacitance type sensor 80 has not detected the bottom portion 28a of the vegetable container 28 before the vegetable room door 27 is opened, and thereafter, while the vegetable room door 27 is open, the capacitance type sensor 80 Even if the sensor 80 detects something, since the vegetable container 28 does not exist on the capacitance type sensor 80 at the time of detection, the cause of the detection is not the bending of the bottom portion 28a of the vegetable container 28. Therefore, while the vegetable compartment door 27 is open, it is desirable not to perform the control at the time of detection as before the capacitance type sensor 80 detects an object.

  As described above, the refrigerator 10 of the present embodiment is provided with the proximity sensor that detects the bottom portion 28a of the vegetable container 28 in a non-contact manner when the bottom portion 28a of the vegetable container 28 is bent downward. The control unit 12 can detect that the bottom 28a is bent downward and the flow path of the cool air below the vegetable container 28 is narrowed. Therefore, the control unit 12 increases the ability to cool the inside of the vegetable container 28 or notifies the user that the flow path of the cool air on the lower side of the vegetable container 28 is narrowed, so that the vegetable room 21 is cooled. Measures can be taken to

  When the bottom 28a of the vegetable container 28 bends, the degree of the bending tends to be largest at the center of the bottom 28a. Therefore, when the proximity sensor is provided at a position facing the center of the bottom portion 28a of the vegetable container 28 in the bottom portion of the vegetable room 21, the bottom portion 28a is bent and the flow path of the cool air below the vegetable container 28 is reduced. The narrowing can be reliably detected.

  In addition, if the proximity sensor that detects the bottom 28a of the vegetable container 28 is a capacitance sensor 80, even if the bottom 28a of the vegetable container 28 is made of synthetic resin, without providing a metal piece or the like on the bottom 28a, Can be detected. However, if the above-described detection piece 81 is provided on the bottom portion 28a, detection can be performed more reliably. Here, if the detected piece 81 is provided at the center of the bottom portion 28a which is a largely bent portion, the detection can be performed more reliably. Further, if the plurality of detection pieces 81 are provided at a plurality of locations on the bottom 28a, it is possible to reliably detect even when a portion other than the center of the bottom 28a is largely bent.

  In addition, when a cool air suction port 36 to the refrigeration cooling chamber 60 is provided at the lower portion of the back of the vegetable container 28, the cool air can flow from the front to the rear under the vegetable container 28, so that the vegetable container 28 It is important to detect that the flow path of the cool air below 28 has become narrow.

  Also, even if the detection state of the capacitance type sensor 80 changes while the vegetable compartment door 27 is open, if the control unit 12 continues the control before the change, the vegetable container 28 is pulled out of the refrigerator. Occasionally, it is possible to avoid such a situation that the control at the time of detection ends even though the bending of the bottom portion 28a of the vegetable container 28 has not been corrected.

  Various changes can be made to the above embodiment.

  First, the proximity sensor for detecting the bottom 28a of the vegetable container 28 is not limited to a capacitance type sensor. Other proximity sensors include, for example, a magnetic proximity sensor and an inductive proximity sensor.

  In the magnetic proximity sensor, ends of two leads are opposed to each other, and the opposed portions are sealed in a glass tube. When a magnet or an electromagnetic coil approaches this, the leads bend and the ends of the two leads come into contact with each other and a current flows. Thereby, a magnet or an electromagnetic coil approaching the magnetic proximity sensor is detected. When a magnetic proximity sensor is used, a magnet or an electromagnetic coil is provided as a detected piece on the bottom portion 28 a of the vegetable container 28. It is desirable that the location where the magnet or the electromagnetic coil is provided is the same as the location of the detected piece 81 in the above embodiment.

  The inductive proximity sensor has, for example, a detection coil that generates an AC magnetic field. When a conductor such as a metal approaches this AC magnetic field, an eddy current flows in the conductor, and the oscillation of the oscillation circuit of the proximity sensor is attenuated or stopped by the influence of the eddy current. Thus, the conductor approaching the inductive proximity sensor is detected. When an inductive proximity sensor is used, a conductor such as a metal is provided as a detected piece on the bottom portion 28a of the vegetable container 28. It is desirable that the location where the conductor is provided is the same as the location of the detected piece 81 in the above embodiment.

  In addition to the vegetable container 28, it is possible to provide a proximity sensor for non-contact detection of a flexure of the mounting section for various mounting sections having a flow path of cool air on the lower side. it can. For example, as shown in FIG. 1, in the refrigerator 10, since a cool air flow path exists below the lower container 46 of the freezing compartment 40, when the bottom 46 a of the lower container 46 bends, it is not contacted. A proximity sensor 82 for detecting can be provided. In this case, the location of the proximity sensor 82, the type of the proximity sensor 82, the presence / absence of the detected piece, the type of the detected piece, the location of the detected piece, the control method, and the like are the same as those in the embodiment of the vegetable container 28. It is. In addition, in the refrigerator 10 of FIG. 1, when a cold air flow path exists below the meat dish 24 and the ice storage container 43, the cold air passage is bent when the meat dish 24 and the ice storage container 43 and the like are bent. A proximity sensor for detecting by contact can be provided. Of course, the type of the mounting portion, the arrangement of the mounting portion, the location of the flow path of the cool air, etc. in the refrigerator are not limited to those of the refrigerator 10 in FIG. The proximity sensor only needs to be provided for at least one of the mounting portions in the refrigerator.

  In addition to the above, various changes, substitutions, omissions, and the like can be made without departing from the spirit of the invention. The above embodiment is an exemplification, and the scope of the invention is not limited to this. The above embodiments and their modifications are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... refrigerator, 11 ... cabinet, 12 ... control part, 13 ... refrigeration temperature sensor, 14 ... freezing temperature sensor, 15 ... vegetable room door sensor, 16 ... freezer room door sensor, 17 ... display part, 18 ... speaker, 20 ... Refrigerator room, 21 ... vegetable room, 22 ... shelf, 23 ... chilled room, 24 ... meat plate, 25 ... refrigerator room door, 26 ... door pocket, 27 ... vegetable room door, 28 ... vegetable container, 28a ... bottom, 29 ... Oxygen-reducing chamber, 30 oxygen-reducing device, 31 duct, 32 outlet, 33 suction port, 34 partition plate, 35 introduction path, 36 intake port, 39 partition plate, 40 freezer compartment, 41 ... Ice making room, 42 ... Ice tray, 43 ... Ice storage container, 44 ... Ice making room door, 45 ... Upper container, 46 ... Lower container, 46a ... Bottom part, 47 ... Freezer compartment door, 60 ... Refrigerator cooling room, 61 ... Refrigerator Cooler for cooling, 62 ... Blower fan for refrigeration, 63 ... Cooling Pressure reducing device, 64 compressor, 65 condenser, 66 switching valve, 70 freezing cooling chamber, 71 freezing cooler, 72 freezing fan, 73 freezing pressure reducing device, 74 blowout Mouth, 75 ... outlet, 76 ... partition plate, 77 ... introduction path, 78 ... suction port, 80 ... capacitance sensor, 81 ... piece to be detected, 82 ... proximity sensor

Claims (8)

  In the storage room, there is provided a mounting portion on which a storage object is mounted, and a cool air flow path below the mounting portion, and a proximity for detecting the non-contact when the mounting portion is bent downward. A refrigerator provided with a sensor.   2. The refrigerator according to claim 1, wherein the mounting portion is a bottom portion of the drawer type container.   The refrigerator according to claim 1, wherein the proximity sensor is provided at a location facing a central portion of the placement section.   The proximity sensor is a capacitance-type sensor, the capacitance-type sensor is provided at a location facing the placement unit, a detection target piece is provided on the placement unit, and the detection target piece is 4. The method according to claim 1, wherein a change in capacitance between the placement unit and the capacitance-type sensor when the placement unit approaches the capacitance-type sensor is larger than in a case where the capacitance-type sensor is not provided. Refrigerator according to item.   The refrigerator according to any one of claims 1 to 4, wherein a suction port for returning cool air to a cooling chamber for cooling air is provided in a lower portion of a back surface of the storage room.   A control unit for controlling the operation of the refrigerator is provided, and when the proximity sensor detects the placement unit bent downward, the control unit performs control to increase the ability to cool the storage room. 6. The refrigerator according to any one of items 5 to 5.   A control unit for controlling the operation of the refrigerator and a notifying unit for notifying the user are provided, and when the proximity sensor detects the placing unit bent downward, the control unit transmits the notifying unit. The refrigerator according to any one of claims 1 to 6, which performs control for notifying by using the refrigerator.   8. The refrigerator according to claim 6, wherein the control unit continues the control before the change even when the detection state of the proximity sensor changes while the storage room door is open. 9.

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