JP2012037088A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent useless operations of an electrostatic atomizer using a defrosted water of a cooler as a water source of the electrostatic atomizer.SOLUTION: The refrigerator includes a body having a storage chamber, a cooler for cooling the storage chamber, an electrostatic atomizer having a high-voltage power supply, and a controlling means. The electrostatic atomizer uses a defrosted water of a cooler as a water source, and generates mist by applying a high voltage by the high-voltage power supply. The controlling means stops driving of the high-voltage power supply when detecting any abnormal condition.

Description

  Embodiments of the present invention relate to a refrigerator.

  In recent years, in refrigerators for home use, an electrostatic atomizer having a high voltage power source is provided in the refrigerator body, and mist generated by applying a high voltage to the electrodes by the high voltage power source is stored in a refrigerator room or the like. The thing supplied to the storage room is considered. In this case, the water necessary for generating mist is generally water from a water supply tank attached and detached by the user, but in order to continuously operate the electrostatic atomizer, There is a problem that the user has to perform water replenishment work periodically.

JP 2006-57999 A

  In order to cope with this, it is conceivable to use defrost water generated at the time of defrosting the cooler as water used in the electrostatic atomizer. However, if the defrost water cannot be secured normally because the defrosting of the cooler cannot be performed properly, mist can be generated satisfactorily even if the high voltage power supply of the electrostatic atomizer is driven. Therefore, the operation of the electrostatic atomizer is wasted.

  Then, the thing which uses the defrost water of a cooler as the water source of an electrostatic atomizer, the refrigerator which can prevent the driving | operation of an electrostatic atomizer is wasted.

  According to the refrigerator of this embodiment, the refrigerator main body which has a storage room, the cooler for cooling a storage room, the electrostatic atomizer which has a high voltage power supply, and a control means are provided. The electrostatic atomizer uses the defrost water of the cooler as a water source and generates mist by applying a high voltage from the high voltage power source. The control means stops the driving of the high-voltage power supply when detecting an abnormal state.

A longitudinal side view showing a schematic configuration of the entire refrigerator according to the first embodiment. Front view of the refrigerator body with doors and shelves removed Schematic perspective view near the chilled chamber Enlarged front view around the mist dedicated duct 4 is a cross-sectional plan view along line X1-X1. In FIG. 4, a longitudinal side view along line X2-X2 In FIG. 4, a longitudinal side view along line X3-X3 In FIG. 4, a longitudinal side view along line X4-X4 Vertical front view of electrostatic atomizer Diagram showing schematic configuration of refrigeration cycle Block diagram showing electrical configuration Flow chart showing control contents of control device FIG. 9 equivalent diagram according to the second embodiment

Hereinafter, refrigerators (refrigerated refrigerators) according to a plurality of embodiments will be described with reference to the drawings. In addition, in each embodiment, the same code | symbol is attached | subjected to the substantially same component, and description is abbreviate | omitted.
(First embodiment)
First, a first embodiment will be described with reference to FIGS. As shown in FIG. 1 and FIG. 2, the refrigerator main body 1 is configured by providing a plurality of storage rooms in a heat insulating box 2 having a vertically long rectangular box shape whose front surface is open. Specifically, in the heat insulation box 2, a refrigeration room 3 and a vegetable room 4 are provided in order from the top, and an ice making room 5 and a small freezer room 6 are provided side by side below, and below these. A freezer compartment 7 is provided. A known automatic ice making device 8 (see FIG. 1) is provided in the ice making chamber 5. The heat insulating box 2 is basically configured by providing a heat insulating material 2c between an outer box 2a made of steel plate and an inner box 2b made of synthetic resin.

  The refrigerator compartment 3 and the vegetable compartment 4 are both storage compartments in a refrigeration temperature zone (for example, 1 to 4 ° C.), and are partitioned vertically by a plastic partition wall 10. A hinged heat insulating door 3 a is provided on the front surface of the refrigerator compartment 3, and a drawer heat insulating door 4 a is provided on the front surface of the vegetable room 4. The lower case 11 which comprises a storage container is connected with the back surface part of this heat insulation door 4a. An upper case 12 smaller than the lower case 11 is provided on the upper portion of the lower case 11.

  The inside of the refrigerator compartment 3 is divided into a plurality of stages by a plurality of shelf boards 13. As shown in FIG. 3, a chilled chamber 14 is provided on the right side and an egg case 15 and an accessory case 16 are provided vertically on the left side in the lowermost part of the refrigerator compartment 3 (upper part of the partition wall 10). Furthermore, a water storage tank 17 is provided on the left side of these. A chilled case 18 is provided in the chilled chamber 14 so that it can be taken in and out. The chilled room 14 also constitutes a storage room in a refrigerated temperature zone. The water storage tank 17 is for storing water to be supplied to the ice tray 8 a of the automatic ice making device 8.

  The ice making room 5, the small freezing room 6, and the freezing room 7 are all storage rooms in a freezing temperature zone (for example, −10 to −20 ° C.), and the vegetable room 4, the ice making room 5, and the small freezing room 6 The space is partitioned vertically by a heat insulating partition wall 19. A drawer-type heat insulating door 5a is provided on the front surface of the ice making chamber 5, and an ice storage container 20 is connected to the back surface of the heat insulating door 5a. Although not shown, a drawer-type heat insulating door connected to a storage container is also provided on the front surface of the small freezer compartment 6. A drawer-type heat insulating door 7 a to which a storage container 22 is connected is also provided on the front surface of the freezer compartment 7.

  The refrigerator main body 1 includes a refrigeration cooler 24 for cooling the refrigeration room 3 and the vegetable room 4 that are storage rooms in a refrigeration temperature zone, the ice making room 5 that is a storage room in a refrigeration temperature zone, and a small freezer. A refrigeration cycle including two coolers, a refrigeration cooler 25 for cooling the chamber 6 and the freezer compartment 7, is incorporated. The refrigeration cycle will be described later. A machine room 26 is provided on the back side of the lower end of the refrigerator main body 1, and a compressor 27 and a condenser that constitute a refrigeration cycle are disposed in the machine room 26, in order to cool them. A cooling fan, a defrosted water evaporating dish 28, and the like are disposed. A control device 29 (corresponding to control means) in which a microcomputer for controlling the whole is mounted is provided near the lower rear portion of the refrigerator body 1.

  A refrigeration cooler chamber 30 is provided behind the freezing chamber 7 in the refrigerator body 1. In the refrigeration cooler chamber 30, the refrigeration cooler 25, a defrosting heater (not shown) and the like are disposed at the lower portion, and the refrigeration blower fan 31 is disposed at the upper portion. Is arranged. A cold air outlet 30a is provided in the middle portion of the front surface of the refrigeration cooler chamber 30, and a return port 30b is provided in the lower end portion. In the freezer compartment 7, a freezer temperature sensor 30 c for detecting the temperature in the freezer compartment 7 is provided in the vicinity of the return port 30 b. The refrigeration cooler 25 is provided with a refrigeration cooler sensor 25 a for detecting the temperature of the refrigeration cooler 25.

  In this configuration, when the refrigeration blower fan 31 is driven, the cold air generated by the refrigeration cooler 25 is supplied into the ice making chamber 5, the small freezer compartment 6, and the freezer compartment 7 from the cold air outlet 30a. Thereafter, circulation is performed such that the refrigerant is returned from the return port 30b into the refrigeration cooler chamber 30. Thereby, the ice making room 5, the small freezer room 6, and the freezer room 7 are cooled. A drainage basin 32 that receives defrost water when the refrigeration cooler 25 is defrosted is provided below the refrigeration cooler 25. The defrost water received by the drainage basin 32 is guided to the defrost water evaporating tray 28 provided in the machine chamber 26 outside the warehouse, and evaporates.

  And in the back part of the said refrigerator compartment 3 and the vegetable compartment 4 in the refrigerator main body 1, the said cooler 24 and the cool air produced | generated by this refrigerator for refrigerator 24 are the said refrigerator compartment 3 (and vegetable compartment 4). A cold air duct 34 for supplying the air inside, a refrigeration blower fan 35 for circulating the cold air, and the like are arranged as follows. That is, a refrigeration cooler chamber 36 that constitutes a part of the cold air duct 34 is provided behind the lowermost stage of the refrigeration chamber 3 in the refrigerator main body 1 (behind the chilled chamber 14). A refrigerating cooler 24 is disposed in the inside 36.

  A cold air supply duct 37 extending upward is provided above the refrigerating cooler chamber 36, and the upper end portion of the refrigerating cooler chamber 36 communicates with the lower end portion of the cold air supply duct 37. In this case, the cold air duct 34 is constituted by the refrigeration cooler chamber 36 and the cold air supply duct 37. The front wall 36 a of the refrigeration cooler chamber 36 bulges forward from the cold air supply duct 37. Further, a heat insulating material 38 having heat insulating properties is provided on the back side of the front wall 36a. In front of the cold air supply duct 37, a plurality of cold air supply ports 39 that open into the refrigerator compartment 3 are provided.

  A drainage basin 40 for receiving defrost water from the refrigeration cooler 24 is provided below the refrigeration cooler 24 in the lower part of the refrigeration cooler chamber 36. The defrosted water received by the drainage basin 40 is also led to the defrosting water evaporating dish 28 provided in the machine room 26 outside the cabinet, similarly to the defrosting water received by the drainage basin 32, It is supposed to evaporate. The left and right length dimensions and the front and rear depth dimensions of the drainage basin 40 are set larger than the left and right length dimensions and the front and rear depth dimensions of the refrigeration cooler 24, and defrosting dripping from the refrigeration cooler 24. It is configured to receive all water.

  The refrigeration blower fan 35 is disposed behind the vegetable compartment 4 below the drainage basin 40, and a blower duct 41 and a suction port 42 are provided. Among them, the air duct 41 communicates with the refrigeration cooler chamber 36 (cold air duct 34) so that the upper end of the air duct 41 circulates the drainage basin 40. The suction port 42 opens in the vegetable compartment 4. As shown in FIG. 5, a communication port 43 is formed at the right corner of the rear part of the partition wall 10 that forms the bottom of the refrigerator compartment 3. This communication port 43 makes the refrigerator compartment 3 (chilled room 14) and the vegetable room 4 below this communicate. Further, the refrigerator compartment 3 and the vegetable compartment 4 communicate with each other through an air passage (not shown).

  In the vegetable compartment 4, a refrigerator temperature sensor 44 (corresponding to an internal temperature sensor) for detecting the temperature in the vegetable compartment 4 and thus in the refrigerator compartment 3 is provided near the upper portion of the suction port 42. Yes. The refrigerating room temperature sensor 44 may be provided in the refrigerating room 3. The refrigeration cooler 24 is provided with a refrigeration cooler sensor 24 a (corresponding to a cooler sensor) for detecting the temperature of the refrigeration cooler 24.

  In this configuration, when the refrigeration blower fan 35 is driven, the air in the vegetable compartment 4 is sucked into the refrigeration blower fan 35 side from the suction port 42, as indicated mainly by the white arrows in FIG. The sucked air is blown out to the air duct 41 side. The air blown out to the blower duct 41 side passes through the cold air duct 34 (the refrigeration cooler chamber 36 and the cold air supply duct 37) and is blown out from the plurality of cold air supply ports 39 into the refrigerator compartment 3. The air blown into the refrigerator compartment 3 is also supplied into the vegetable compartment 4 through the communication port 43 and an air passage (not shown), and is finally sucked into the refrigerator fan 35 for refrigeration. In this process, the air passing through the refrigerating cooler chamber 36 is cooled by the refrigerating cooler 24 to become cold air, and the cold air is supplied to the refrigerating chamber 3 and the vegetable chamber 4. 4 is cooled to a temperature in the refrigeration temperature zone.

  As shown in FIGS. 2 and 4, the cold air duct 34 is located on the front side of the refrigeration cooler chamber 36 on the right side when viewed from the front and behind the chilled chamber 14, and is a dedicated duct for mist. 45 is detachably provided. As shown in FIGS. 5 to 8, the mist exclusive duct 45 is formed by a front wall 36 a of the refrigeration cooler chamber 36 and a duct component member 46 attached to the front surface of the refrigeration cooler chamber 36. In addition, the duct component member 46 forming the mist dedicated duct 45 is detachable from the front wall 36a. In this case, the mist exclusive duct 45 is formed in a flat rectangular box shape that is long in the left-right direction along the front wall 36a and has a small depth dimension in the front-rear direction. And the main part of the electrostatic atomizer 48 which comprises the mist generator for generating mist is accommodated in this duct 45 for mist. Hereinafter, the electrostatic atomizer 48 will be described in detail.

  As shown in FIG. 9, the electrostatic atomizer 48 includes a mist generating unit 51 having a mist emitting unit 50 and a power supply device (high voltage power source for applying a negative high voltage to the mist emitting unit 50 ( A transformer) 52. The mist generating unit 51 includes a water supply unit 53 that supplies moisture to the mist discharge unit 50. The water supply portion 53 has a horizontal portion 53a extending in the left-right direction and a vertical portion 53b extending downward from the right end portion of the horizontal portion 53a. The water supply portion 53 has an inverted L shape as viewed from the front, and has an L shape. A water retaining material 55 is accommodated in the case 54 formed. Therefore, the water supply part 53 has the refracting part 53c between the horizontal part 53a and the vertical part 53b. The horizontal part 53 a and the vertical part 53 b in the water supply part 53 are arranged along the front wall 36 a so as to be parallel to the front wall 36 a of the refrigeration cooler chamber 36 in the cold air duct 34.

  The water-retaining material 55 is, for example, a felt-like material in which fibers are entangled, and is excellent in water absorption and water retention, and sucks up water (defrosted water) stored in a water storage container 56 (water storage part) described later by a capillary phenomenon. . The water retaining material 55 may be a continuous foam as long as water can be sucked up by capillary action. The horizontal portion 53a of the water supply portion 53 is arranged slightly to the right in the mist dedicated duct 45, and the lower end portion of the vertical portion 53b is the lower portion of the duct component member 46, as shown in FIG. A hole formed in the front step portion 36 b of 36 is inserted into the lower front portion in the refrigerator compartment 36 for refrigeration. The outer periphery of the water retaining material 55 is covered with a case 54. In the water retaining material 55, the horizontal portion 53a and the vertical portion 53b may be formed of separate members.

  A water storage container 56 (see FIG. 8) that constitutes a water storage section is provided in the front part of the lower part in the refrigerator room 36 for refrigeration. The water storage container 56 is positioned between the refrigeration cooler 24 and the drainage basin 40 below the refrigeration cooler 24 and below the water supply unit 53, and the front part is the front part of the refrigeration cooler chamber 36. By being attached to the lower part 36c of the wall 36a, it is provided in a cantilever state so as to protrude rearward. In this case, the lower portion 36c to which the front portion of the water storage container 56 is attached is below the front wall 36a and bulges (projects) forward from the front wall 36a via the stepped portion 36b. When the front wall 36a is a first bulging portion, the lower portion 36c is a second bulging portion that protrudes further forward. The water storage container 56 is separated from the refrigeration cooler 24 and the inner box 2b forming the rear surface of the refrigeration cooler chamber 36 in a state of being attached to the lower portion 36c. The refrigeration cooler 24 is in contact with the inner box 2 b that forms the rear surface of the refrigeration cooler chamber 36.

  A lower end portion of the vertical portion 53 b in the water supply portion 53 passes through a hole formed in a lower portion of the duct component member 46 and a step portion 36 b in the front portion of the refrigeration cooler chamber 36, and extends upward into the water storage container 56. Has been inserted from. The water storage container 56 receives and stores defrost water dripped from the refrigeration cooler 24. As described above, the water retaining material 55 of the water supply unit 53 sucks up the water (defrosted water) stored in the water storage container 56 by capillary action and supplies it to the mist discharge unit 50.

  An overflow portion 56a that is set lower than the others is formed at the upper portion of the rear end portion of the water storage container 56. When the water stored in the water storage vessel 56 overflows, the overflow portion 56a It will overflow. The overflow portion 56a is located above the drainage basin 40 so that the water overflowing from the overflow portion 56a is received by the drainage basin 40 and discharged to the defrosted water evaporating dish 28 outside the apparatus. Become.

  A mist discharge unit 50 is provided in the horizontal portion 53 a of the water supply unit 53. The mist discharge part 50 is comprised by the several mist discharge | release pin 57 which each comprises a protrusion. A plurality of mist discharge pins 57 are arranged upward in the horizontal portion 53a, and four in this case are arranged in a horizontal line in the left-right direction and are spaced apart from each other, and are arranged on the lower side of the horizontal portion 53a. A plurality of, in this case, four in this case are arranged in a horizontal line in the left-right direction and are spaced apart from each other. Therefore, the mist discharge | release part 50 is comprised by the several mist discharge | release pin (projection) 57 which protrudes in a different direction (above and below). Moreover, the mist discharge | release part 50 is arrange | positioned so that the several mist discharge | release pin (projection part) 57 may extend in the up-and-down opposite direction between the horizontal parts 53a in the water supply part 53. The plurality of mist discharge pins (protrusions) 57 are arranged in two upper and lower stages. Each mist discharge pin 57 is arranged so as to be parallel to the front wall 36 a of the refrigeration cooler chamber 36 in the cold air duct 34. The mist discharge part 50 is provided in the lower rear part of the refrigerator compartment 3 and the position adjacent to the vegetable compartment 4, and is arrange | positioned behind the chilled chamber 14. FIG.

  Each mist release pin 57 is formed, for example, by mixing polyester fiber and carbon fiber as a conductive substance and twisting them into a pin shape (bar shape). have. Each mist release pin 57 carries platinum nanocolloid. The platinum nanocolloid can be supported, for example, by immersing the mist release pin 57 in a treatment liquid containing the platinum nanocolloid and baking it. Each mist discharge pin 57 passes through the case 54 in the water supply portion 53 and is in contact with the water retaining material 55 at the base end portion. At the left end portion of the horizontal portion 53a in the water supply portion 53, a power receiving pin 58 constituting a power receiving electrode is provided so as to protrude leftward. A base end portion of the power receiving pin 58 is in contact with the water retaining material 55 in the case 54.

  The power supply device 52 is provided in a fixed state so as to be positioned on the left side of the mist generating unit 51 in the mist dedicated duct 45. A power supply terminal 61 composed of a faston terminal to which a lead wire 60 is connected is provided at the right end of the power supply device 52, and the power reception pin 58 of the mist generating unit 51 is connected to the power supply terminal 61. Yes.

  As is well known, the power supply device 52 includes a rectifier circuit including a high-voltage transformer that converts a high-frequency power supply (AC power supply) into direct current, a booster circuit, and the like, and generates a negative high voltage (for example, −6 kV). The power is output to the power receiving pin 58 via the power supply terminal 61.

  As a result, a negative high voltage from the power supply device 52 is applied from the power receiving pin 58 to each mist discharge pin 57 serving as an electrode through the moisture of the water retaining material 55 so that each mist discharge pin 57 is negatively charged. It has become. In this case, the outer box 2a of the refrigerator main body 1 is grounded via a ground wire (not shown) or the like.

  In the electrostatic atomizer 48 configured as above, the water in the water storage container 56 is sucked up by the water retaining material 55 and supplied to each mist discharge pin 57, and the power supply device 52 is connected to each mist discharge pin 57. A negative high voltage from is applied. At this time, electric charges concentrate on the tip of each mist discharge pin 57, and energy exceeding the surface tension is given to the water contained in the tip. As a result, the water at the tip of each mist discharge pin 57 is split (Rayleigh split) and discharged from the tip into a fine mist (electrostatic atomization phenomenon). Here, the water particles released in the form of mist are negatively charged and contain hydroxy radicals generated by the energy.

  Accordingly, hydroxy radicals having a strong oxidizing action are released together with the mist from each mist releasing pin 57, and sterilization and deodorization are enabled by the action of the hydroxy radicals. In this case, the counter electrode corresponding to the negatively charged mist discharge pin 57 is not provided. Therefore, the discharge itself from the mist emitting pin 57 becomes very gentle, and no harmful gas (ozone or the ozone oxidizes nitrogen in the air without generating corona discharge between the discharge electrode and the counter electrode). Generation of nitrogen oxides, nitrous acid, nitric acid, etc. generated by the

  Here, the mist releasing pin 57 (mist releasing part 50) can be called a disinfecting component releasing means (also a deodorizing component releasing means) for releasing a disinfecting component (also a deodorizing component) called a hydroxy radical, The atomization device 48 can be referred to as a sterilization component generation means (deodorization component generation means).

  A mist cold air supply port 62 (see FIGS. 4 and 7) is provided in the front wall 36a of the refrigeration cooler chamber 36 that constitutes the rear wall of the mist dedicated duct 45. The mist cold air supply port 62 is disposed above the power supply device 52 at a position not facing the mist discharge pin 57 in the mist discharge section 50, in this case, on the left side of the mist discharge section 50. The mist cold air supply port 62 has a rear portion penetrating the heat insulating material 38 and communicating with the refrigeration cooler chamber 36 in the cold air duct 34, and a front portion communicating with the mist dedicated duct 45. Accordingly, a part of the cold air passing through the cold air duct 34 is supplied from the mist cold air supply port 62 into the mist exclusive duct 45 (see arrow A1 in FIG. 7). The cold air supplied from the mist cold air supply port 62 into the mist dedicated duct 45 is convected in the mist dedicated duct 45.

  Above the mist cold air supply port 62, a mist duct 63 for the refrigeration chamber (see FIGS. 4 and 7) is provided, which is positioned on the back side of the front wall 36 a of the refrigeration cooler chamber 36 and extends upward. ing. The cold room mist duct 63 has a lower end opened in the mist dedicated duct 45 to be a cold room mist outlet 63a, and an upper end communicated with the cold air supply duct 37 in the cold air duct 34. . Accordingly, a part of the mist generated in the mist dedicated duct 45 passes from the refrigeration room mist outlet 63a through the refrigeration room mist duct 63 and the cold air supply duct 37 and into the cold room 3 from the cold air supply port 39. (Refer to arrow B1 in FIGS. 4 and 7).

  A mist chamber mist outlet 65 (see FIGS. 4 and 7) is positioned above the mist cold air supply port 62 at the front surface (a position different from the upper surface) of the duct component member 46 in the mist dedicated duct 45. A portion of the mist is supplied from the chilled chamber mist outlet 65 into the chilled chamber 14 (see arrow B2 in FIGS. 4 and 7). Further, an egg case mist outlet 66 (see FIG. 4) is provided on the front side of the duct component member 46 on the left side of the chilled chamber mist outlet 65, and the egg case mist outlet is provided. A part of the mist is also supplied from 66 into the egg case 15 (see arrow B3 in FIG. 4).

  Further, as shown in FIG. 5, a vegetable room mist outlet 67 is provided at the lower right side of the mist dedicated duct 45. The vegetable room mist outlet 67 communicates with the communication port 43, and a part of the mist in the mist dedicated duct 45 enters the vegetable room 4 through the vegetable room mist outlet 67 and the communication port 43. Are also being supplied. In this case, the distance L1 between the mist cold air supply port 62 for blowing cold air into the mist dedicated duct 45 and the vegetable room mist air outlet 67 is equal to the mist cold air supply port 62 and the chilled room mist air outlet 65. Is set to be larger than the distance L2.

  A chilled chamber cold air supply port 68 (see FIGS. 4, 6, and 8) is provided above the mist exclusive duct 45 so as to be positioned above the mist discharge section 50. As shown in FIG. 8, the cold air supply port 68 for the chilled chamber has a rear portion that penetrates the heat insulating material 38 and communicates with the refrigeration cooler chamber 36, and a front portion that penetrates the mist dedicated duct 45 and passes through the chilled chamber. 14 is communicated. Accordingly, a part of the cold air in the refrigeration cooler chamber 36 is directly supplied to the chilled chamber 14 through the chilled chamber cold air supply port 68 (see arrow A2 in FIGS. 6 and 8). Further, the heat insulating material 38 also serves as an insulating means between the refrigeration cooler 24 and the mist discharge unit 50.

  FIG. 10 shows a schematic configuration of the refrigeration cycle 71 in the refrigerator of the present embodiment. In this refrigeration cycle 71, the discharge part 27a of the compressor 27 is connected via a condenser 72 to an inlet part 73a of a switching valve 73 which is a three-way valve in this case, which switches the refrigerant flow path. Then, one outlet 73b of the switching valve 73 is connected to the suction portion 27b of the compressor 27 via the first capillary tube 74, which is a freezing restrictor, the freezing cooler 25, and the accumulator 75. The other outlet 73c of the switching valve 73 is connected to the suction portion 27b of the compressor 27 via the second capillary tube 76, which is a refrigeration restrictor, and the refrigeration cooler 24.

  Here, when cooling the storage room (the ice making room 5, the small freezing room 6, and the freezing room 7) in the freezing temperature zone, the compressor 27 is in a state in which one outlet 73b of the switching valve 73 is opened. Driven. Then, the refrigerant discharged from the discharge portion 27a of the compressor 27 passes through the condenser 72, the one outlet portion 73b of the switching valve 73, the first capillary tube 74, the refrigeration cooler 25, and the accumulator 75 in order. It circulates so that it may return to the compressor 27 from the suction part 27b of the machine 27. In this process, the air around the refrigeration cooler 25 is cooled, and the cold air is circulated by the refrigeration blower fan 31 as described above. The chamber 6 and the freezing chamber 7) are cooled.

  Further, when the storage room (refrigeration room 3, vegetable room 4, chilled room 14) in the refrigeration temperature zone is cooled, the compressor 27 is driven with the other outlet 73c of the switching valve 73 opened. The Then, the refrigerant discharged from the discharge portion 27a of the compressor 27 passes through the condenser 72, the other outlet portion 73c of the switching valve 73, the second capillary tube 76, and the refrigeration cooler 24 in this order, It circulates so that it may return to the compressor 27 from the suction part 27b. In this process, the air around the refrigeration cooler 24 is cooled, and the chilled air is circulated by the refrigeration blower fan 35 as described above, so that the storage room (the refrigeration room 3, the vegetable room) in the refrigeration temperature zone. 4. The chilled chamber 14) is cooled.

  When the refrigeration cooler 25 is defrosted, the defrost heater (not shown) is energized while the operation of the compressor 27 is stopped, and the refrigeration cooler 25 is heated by the defrost heater. Thereby, the defrosting of the refrigeration cooler 25 is performed. As described above, the defrosted water generated by this defrosting is received by the drainage basin 32 and then guided to the defrosted water evaporating dish 28 to evaporate.

  When the refrigeration cooler 25 is defrosted, the refrigeration cooler 24 is also defrosted at the same time. The defrosting of the refrigeration cooler 24 is basically performed by driving the refrigeration blower fan 35 to convert the air in the refrigeration temperature zone storage room (refrigeration room 3, vegetable room 4, chilled room 14) into the cold air duct 34. Is done by circulating through. By circulating the air in the storage room in the refrigeration temperature zone through the cold air duct 34, the temperature of the refrigeration cooler 24 becomes a positive temperature, thereby increasing the temperature of the refrigeration cooler 24 and performing defrosting. . A part of the defrost water dripped from the refrigeration cooler 24 during the defrosting of the refrigeration cooler 24 is received and stored in the water storage container 56 of the electrostatic atomizer 48, and the rest is as described above. After being received by the drain 40, it is guided to the defrosted water evaporating tray 28 and evaporates.

  The defrosting of the refrigeration cooler 24 is performed not only when the refrigeration cooler 25 described above is defrosted but also when the refrigeration cooler 25 cools the storage room in the freezing temperature zone. At this time, the compressor 27 is driven, but the other outlet 73c of the switching valve 73 is closed, and the refrigeration blower fan 35 is turned on in a state where no refrigerant flows into the refrigeration cooler 24. This is done by driving.

  FIG. 11 schematically shows the electrical configuration of the refrigerator of the present embodiment in blocks centering on the control device 29. In FIG. 11, detection signals are input to the control device 29 from the refrigeration cooler sensor 24a, the refrigeration chamber temperature sensor 44, the refrigeration cooler sensor 25a, and the freezer compartment temperature sensor 30c. The control device 29 is connected to the power supply device 52 of the electrostatic atomizer 48, the refrigeration blower fan 35, the refrigeration blower fan 31, the compressor 27 and switching valve 73 of the refrigeration cycle 71, and the nonvolatile memory 77. ing. The control device 29 is based on the detection signals from the respective sensors 24a, 44, 25a, 30c, the output signals from the refrigeration blower fan 35, the freezing blower fan 31, and the compressor 27, and a control program prepared in advance. And a function of controlling the power supply device 52, the refrigeration blower fan 35, the freezing blower fan 31, the compressor 27, the switching valve 73, the nonvolatile memory 77, and the like.

  In the above configuration, the flow of cold air by the refrigeration cooler 24 and the flow of mist generated by the electrostatic atomizer 48 will be described. As described above, when the refrigerator compartment 3 and the vegetable compartment 4 are cooled, the cold air cooled by the refrigerator refrigerator 24 is mainly indicated by white arrows in FIG. As shown in the figure, it passes through the cold air supply duct 37 and is supplied from the plurality of cold air supply ports 39 into the refrigerating chamber 3, and a part thereof is directly supplied from the chilled chamber cold air supply port 68 into the chilled chamber 14 (see FIG. 6, see arrow A2 in FIG. The cold air supplied to the refrigerated room 3 and the chilled room 14 contributes to the cooling of stored items such as foods, and is also supplied to the vegetable room 4 from the communication port 43 and an air passage (not shown). The cold air supplied into the vegetable compartment 4 contributes to the cooling of stored items such as vegetables, and then is sucked into the refrigeration fan 35 side from the suction port 42 and cooled again by the refrigeration cooler 24. repeat.

  Further, when the refrigerator compartment 3 and the vegetable compartment 4 are cooled, a part of the cold air in the refrigerator refrigerator compartment 36 is supplied from the mist cold air supply port 62 through the mist exclusive duct 45 as shown by an arrow A1 in FIG. Supplied in. The cold air supplied into the mist dedicated duct 45 collides with the inner surface of the duct component member 46 and convects and diffuses in the mist dedicated duct 45. At this time, when the electrostatic atomizer 48 is driven, fine mist containing hydroxy radicals is released from each of the plurality of mist release pins 57 in the mist generation unit 51 as described above. As shown by an arrow B1 in FIG. 7, a part of the mist discharged from the mist discharge pin 57 rides on the convection cold air, from the cold room mist outlet 63a to the cold room mist duct 63, the cold air supply duct. 37, and is supplied from the cold air supply port 39 into the refrigerator compartment 3.

  A part of the mist discharged from the mist discharge pin 57 is supplied from the chilled chamber mist outlet 65 into the chilled chamber 14 as shown by an arrow B2 in FIG. 4 and FIG. As shown by the arrow B3, it is also supplied into the egg case 15 from the mist outlet 66 for egg case. Furthermore, a part of the mist discharged from the mist discharge pin 57 is also supplied into the vegetable compartment 4 from the mist outlet 67 for the vegetable compartment at the lower right through the communication port 43.

  Therefore, in this embodiment, the mist generated in the mist dedicated duct 45 can be supplied to a plurality of supply destinations such as the refrigeration chamber 3, the chilled chamber 14, the egg case 15, and the vegetable chamber 4. In addition to expecting the effects of sterilization and deodorization at the supply destination, it can also be expected to maintain moisture and freshness of vegetables.

Next, the control content of the control apparatus 29 is demonstrated along the flowchart of FIG. Here, the operation control of the electrostatic atomizer 48 (driving and stopping of the power supply device 52), the control of the cooling operation by the refrigerating cooler 24, and the control of the defrosting operation of the refrigerating cooler 24 will be mainly described. To do.
When a power plug (not shown) included in the refrigerator is connected to a power outlet (not shown), the control device 29 first reads the contents stored in the nonvolatile memory 77 (step S1), and the high voltage stop flag F2 It is determined whether there is a record (step S2). The high voltage stop flag F2 will be described later. If it is determined in step S2 that there is a record of the high voltage stop flag F2, the process proceeds to step S3 according to “YES”, the high voltage stop flag F2 is set, and the process proceeds to step S4. If it is determined in step S2 that the high voltage stop flag F2 is not recorded, the process proceeds to step S4 according to “NO”.

  In step S4, it is determined whether the temperature detected by the refrigeration cooler sensor 24a is lower than a threshold value, in this case, −15 ° C. When the refrigeration cycle 71 or the like is normal, the temperature of the refrigeration cooler 24 is not at most −10 ° C. or lower, so that the temperature detected by the refrigeration cooler sensor 24a is lower than −15 ° C. It is conceivable that the operation of the refrigeration cycle 71 including the refrigeration cooler 24 is abnormal or the operation of the refrigeration blower fan 35 is abnormal. Normally, in step S4, the process proceeds to step S5 according to “NO”.

  In step S5, it is determined whether or not there is an abnormality in the sensor. The sensors in this case are the refrigeration cooler sensor 24a and the refrigerating room temperature sensor 44, and it is determined whether or not the detection signals of these sensors 24a and 44 are abnormal. When there is no abnormality in the refrigeration cooler sensor 24a and the refrigerating room temperature sensor 44, the process proceeds to step S6 according to “NO”.

  In step S6, it is determined whether or not the defrosting interval time of the refrigeration cooler 24 has exceeded a predetermined time, in this case, 60 minutes. The defrosting interval time of the refrigeration cooler 24 is the time between the time when the defrosting operation once ends and the next defrosting operation is started. The interval time between the defrosting of the refrigeration cooler 24 and the next defrosting is normally about 15 minutes, but if it exceeds 60 minutes, it is determined to be in an abnormal state. Normally, it is determined that the interval time does not exceed 60 minutes, and the process proceeds to step S7 according to “NO”.

  In step S7, it is determined whether or not the refrigeration blower fan 35 has an abnormality. If there is an abnormality in the refrigeration blower fan 35, an error signal is output from the drive circuit (not shown) of the refrigeration blower fan 35 to the control device 29. Therefore, the control device 29 determines whether there is an error signal. Whether or not there is an abnormality in the refrigeration blower fan 35 is determined. When there is no abnormality in the refrigeration blower fan 35, the process proceeds to step S8 according to “NO”.

  In step S8, the high voltage stop flag F1 is reset, and the process proceeds to step S9. Note that if “YES” is determined in any of steps S4 to S7, it is determined that the state is abnormal, and the process proceeds to step S10, where the high voltage stop flag F1 is set. Therefore, the high voltage stop flag F1 is set when “YES” is determined in any of steps S4 to S7.

  In step S9, it is determined whether or not a cooling flag is set. When the cooling flag is not set, the process proceeds to step S19 according to “NO”, and it is determined whether or not the defrost flag is set. When the defrost flag is not set, the process proceeds to step S24 according to “NO”, and it is determined whether or not the temperature detected by the temperature sensor 44 for the refrigerator compartment exceeds 3 ° C. If it is determined that the temperature detected by the cold room temperature sensor 44 exceeds 3 ° C., the process proceeds to step S29 according to “YES” to set the cooling flag, and then proceeds to step S14. When it is determined that the temperature detected by the refrigerator temperature sensor 44 does not exceed 3 ° C., the process proceeds to step S14 according to “NO”.

  In step S14, it is determined whether the high voltage stop flag F1 or F2 is set. If neither of the high voltage stop flags F1 and F2 is set, the process proceeds to step S15 according to “NO”, and the power supply device 52, which is the high voltage power supply of the electrostatic atomizer 48, is operated, and step S4 is performed. Return to. When the control device 29 determines in step S14 that at least one of the high voltage stop flags F1 and F2 is set, the control device 29 proceeds to step S16 according to “YES” and the electrostatic atomizer 48 After stopping the driving of the power supply device 52 which is a high voltage power supply, the process returns to step S4.

  Then, the control device 29 returns to step S9 and determines whether or not the cooling flag is set. If it is determined that the cooling flag is set, the control device 29 proceeds to step S11 according to “YES” to Start driving. In the cooling operation in this case, in the refrigeration cycle 71, the switching valve 73 is switched so that the refrigerant discharged from the compressor 27 flows to the refrigeration cooler 24, and the cold air cooled by the refrigeration cooler 24 is refrigerated. This is an operation for cooling the refrigerator compartment 3, vegetable compartment 4, and chilled compartment 14 in the refrigerated temperate zone by circulating them with the air blowing fan 35.

In step S12, it is determined whether or not the cooling time by the cooling operation has exceeded 30 minutes. At the start of the cooling operation, the process proceeds to step S13 according to “NO”, and it is determined whether or not the temperature detected by the cold room temperature sensor 44 is lower than a threshold value, for example, 1 ° C. At the start of the cooling operation, the temperature detected by the cold room temperature sensor 44 is higher than 1 ° C. Therefore, the process proceeds to step S14 according to “NO”, and whether or not the high voltage stop flag F1 or F2 is set. Judging.
Normally, the cooling operation of the storage room (refrigeration room 3, vegetable room 4, chilled room 14) in the refrigeration temperature zone is continuously performed until the temperature detected by the temperature sensor 44 for the refrigeration room is lower than 1 ° C., The operation of the electrostatic atomizer 48 is continued.

  Then, the control device 29 determines that the detected temperature of the temperature sensor 44 for the refrigerating room has become lower than the threshold value of 1 ° C. before the elapse of time after the start of the cooling operation for a predetermined time, in this case, 30 minutes. In this case, it is determined that the storage room in the refrigeration temperature zone has been sufficiently cooled, and the process proceeds to step S17 according to “YES” in step S13 to reset the cooling flag, and thereafter, the defrost flag is set instead ( Step S18) and the process proceeds to step S14. Normally, about 15 minutes after the start of the cooling operation, the temperature detected by the refrigerating room temperature sensor 44 becomes lower than the threshold value of 1 ° C.

  When the defrost flag is set in step S18, the control device 29 returns to step S9, proceeds to step S19 according to “NO”, and determines whether or not the defrost flag is set. If it is determined that the defrost flag is set, the process proceeds to step S20 according to “YES”, and the defrost operation of the refrigeration cooler 24 is started. The defrosting operation of the refrigeration cooler 24 is performed by switching the switching valve 73 so that the refrigerant in the refrigeration cycle 71 does not flow into the refrigeration cooler 24 and operating the refrigeration blower fan 35. When starting the defrosting operation of the refrigerating cooler 24, the control device 29 resets the defrosting interval timer in step S21, and proceeds to step S22.

  In step 22, the control device 29 determines whether or not the defrosting operation time has exceeded 20 minutes. At the start of the defrosting operation, the process proceeds to step S23 according to “NO”, and it is determined whether or not the temperature detected by the refrigeration cooler sensor 24a exceeds 3 ° C. At the start of the defrosting operation, the temperature detected by the refrigeration cooler sensor 24a is lower than 3 ° C., so the process proceeds to step S24 according to “NO”. In step S24, it is determined whether or not the temperature detected by the refrigerator temperature sensor 44 exceeds 3 ° C. If the temperature detected by the refrigerating room temperature sensor 44 does not exceed 3 ° C., the process proceeds to step S14 according to “NO”.

  During the defrosting operation of the refrigerating cooler 24, when the temperature detected by the refrigerating cooler sensor 24a exceeds 3 ° C. before the defrosting operation time has elapsed 20 minutes, the control device 29 It is determined that the defrosting of the cooling device 24 has been normally performed, the process proceeds to step S25 according to “YES” in step S23, and the defrost flag is reset. When the defrosting of the refrigerating cooler 24 is normally performed, a part of the defrosting water of the refrigerating cooler 24 is received by the water storage container 56 of the electrostatic atomizer 48 and stored. Thereafter, if the high voltage stop flag F2 is set, the high voltage stop flag F2 is reset (step S26), and is recorded in the nonvolatile memory 77 (step S27). Thereafter, the control device 29 starts the defrost interval timer (step S28), and proceeds to step S24. If it is determined that the temperature detected by the refrigerator temperature sensor 44 exceeds 3 ° C., the process proceeds to step S29 according to “YES” in step S23, the cooling flag is set, and then the process proceeds to step S14. .

  Usually, after defrosting of the refrigeration cooler 24 is started, the temperature detected by the refrigeration cooler sensor 24a rises to 3 ° C., which is a threshold value, in about 15 minutes. However, in the case of an abnormal state in which the temperature detected by the refrigeration cooler sensor 24a does not rise to the threshold of 3 ° C. within a predetermined time, in this case, 20 minutes after the start of defrosting of the refrigeration cooler 24. For example, the control device 29 determines that the refrigeration cooler 24 has a large amount of frost formation and the frost is not sufficiently melted, and proceeds to step S30 according to “YES” in step S22 to set the high voltage stop flag F2. This is recorded in the nonvolatile memory 77 (step S31). Thereafter, the process proceeds to step S23. In such a case, the control device 29 proceeds to step S16 according to “YES” in step S14, and stops driving the power supply device 52 of the electrostatic atomizer 48.

  In the case where the defrosting operation is being performed and the high voltage stop flag F2 is set, if the temperature detected by the refrigeration cooler sensor 24a rises to a positive temperature threshold of + 3 ° C., the refrigeration cooler 24 It can be determined that the defrosting has been completed. When the controller 29 determines in step S23 that the temperature detected by the refrigeration cooler sensor 24a has risen to a positive temperature threshold of + 3 ° C., the control device 29 proceeds to step S25 according to “YES” and described above. Thus, after resetting the defrost flag, the high voltage stop flag F2 is reset and recorded in the nonvolatile memory 77 (steps S26 and S27). In such a case, the process proceeds to steps S14 and S15, and the driving of the power supply device 52 of the electrostatic atomizer 48 is resumed.

  In addition, even if the cooling operation is performed for a predetermined time, in this case 30 minutes, during the cooling operation of the storage room (refrigeration room 3, vegetable room 4, chilled room 14) in the refrigeration temperature zone, the temperature detected by the temperature sensor 44 for the refrigeration room However, if the temperature does not fall below the threshold value of 1 ° C., for example, frost formation occurs in the refrigeration cooler 24, and it is difficult for the wind to pass around the refrigeration cooler 24. It may be an abnormal condition that it is difficult to cool. In such a case, the control device 29 determines that the cooling time has exceeded 30 minutes in step S12, proceeds to step S32 in accordance with “YES”, and sets the high voltage stop flag F2. When the high voltage stop flag F2 is set, the control device 29 records this in the nonvolatile memory 77 (step S33), and proceeds to step S13. Even in such a case, the control device 29 proceeds to step S16 according to “YES” in step S14, and stops driving the power supply device 52 of the electrostatic atomizer 48.

  When it is determined “YES” in any of steps S4, S5, S6, and S7, control device 29 sets high voltage stop flag F1 in step S10. In this case, the control device 29 stops the driving of the power supply device 52 of the electrostatic atomizer 48 in steps S14 and S16. Further, when the control device 29 determines “NO” in all of the above steps S4, S5, S6, and S7 in a state where the high voltage stop flag F1 is set, the condition of the high voltage stop flag F1 is canceled. In step S8, the high voltage stop flag F1 is reset. In this case, the control device 29 restarts driving of the power supply device 52 of the electrostatic atomizer 48 in steps S14 and S15.

  On the other hand, when a power failure occurs or a power plug is removed or inserted, the control device 29 starts from the beginning of the flowchart of FIG. Then, as described above, the nonvolatile memory 77 is read, and when there is a set recording of the high voltage stop flag F2, the high voltage stop flag F2 is set in step S3. Thus, when there is a set record of the high voltage stop flag F2 in the nonvolatile memory 77, the electrostatic atomizer 48 of the electrostatic atomizer 48 is reset until the high voltage stop flag F2 is reset (until the abnormal state is cleared). The driving of the power supply device 52 remains stopped.

According to the first embodiment described above, the following operational effects can be obtained.
First, as the water used in the electrostatic atomizer 48, the defrost water of the refrigeration cooler 24 received by the water storage container 56 is used, so that water supply to the electrostatic atomizer 48 is automatically performed. It can be performed, and it is possible to eliminate the need for the user to perform water supply work, which is convenient.

  In the case where the defrost water of the refrigeration cooler 24 is used as the water source of the electrostatic atomizer 48, the control device 29 performs this operation for a predetermined time after starting an abnormal state, for example, the defrost operation of the refrigeration cooler 24. If an abnormal state is detected that the detected temperature of the refrigeration cooler sensor 24a that detects the temperature of the refrigeration cooler 24 does not rise to 3 ° C., which is the threshold value, within 20 minutes, the power supply in the electrostatic atomizer 48 The driving of the device 52 is stopped.

  Here, within 20 minutes after the start of the defrosting operation of the refrigeration cooler 24, the temperature detected by the refrigeration cooler sensor 24a that detects the temperature of the refrigeration cooler 24 does not rise to the threshold of 3 ° C. In this case, there is a high possibility that the defrosting of the refrigeration cooler 24 is not performed well, and the defrosted water is stored in the water storage container 56 that receives the defrosted water of the refrigeration cooler 24 that is the water source of the electrostatic atomizer 48. May not be well stored. Even if the power supply device 52 of the electrostatic atomizer 48 is driven in such a state, mist cannot be generated satisfactorily, and the operation of the electrostatic atomizer 48 may be wasted. In this regard, according to the present embodiment, as described above, the control device 29 starts the defrosting operation of the refrigeration cooler 24 and then starts the temperature of the refrigeration cooler 24 within a predetermined time, in this case, within 20 minutes. By detecting the abnormal state that the detection temperature of the refrigeration cooler sensor 24a that detects the temperature does not rise to the threshold of 3 ° C., the driving of the power supply device 52 in the electrostatic atomizer 48 is stopped. It is possible to prevent the operation of the electrostatic atomizer 48 from being wasted.

  Even if the cooling operation by the refrigeration cooler 24 that cools the storage room (refrigeration room 3, vegetable room 4, chilled room 14) in the refrigeration temperature zone is performed for a predetermined time, in this case, 30 minutes, the detection of the temperature sensor 44 for the refrigeration room When the temperature does not decrease to the threshold value of 1 ° C., for example, the refrigeration cooler 24 has a lot of frost formation, and it is difficult for the wind to pass around the refrigeration cooler 24 and the storage chamber is difficult to cool. It is done. Even in such a case, it is preferable not to operate the electrostatic atomizer 48. Therefore, in the present embodiment, the control device 29 performs the cooling operation by the refrigeration cooler 24 for cooling the storage room (the refrigeration room 3, the vegetable room 4, the chilled room 14) in the refrigeration temperature zone for a predetermined time, in this case 30 When the abnormal state that the temperature detected by the cold room temperature sensor 44 does not decrease to the threshold value of 1 ° C. is detected even if it is divided, the driving of the power supply device 52 in the electrostatic atomizer 48 is stopped. This can also prevent the operation of the electrostatic atomizer 48 from being wasted.

  When the refrigeration cycle 71 and the like are normal in the two-evaporation system including the refrigeration cooler 25 and the refrigeration cooler 24 as in the present embodiment, the temperature of the refrigeration cooler 24 is at least -10. If the temperature detected by the refrigeration cooler sensor 24a is lower than −15 ° C., the operation of the refrigeration cycle 71 including the refrigeration cooler 24 may be abnormal or may be refrigerated. It is conceivable that the operation of the blower fan 35 is abnormal. The control device 29 stops the driving of the power supply device 52 of the electrostatic atomizer 48 when detecting an abnormal state in which the temperature detected by the refrigeration cooler sensor 24a is a threshold, for example, lower than −15 ° C. Thus, when there is an abnormality in the refrigeration cycle 71 or the refrigeration cooling fan 35, it is useless even if the electrostatic atomizer 48 is operated, and wasteful operation of the electrostatic atomizer 48 is prevented. Can do.

  The control device 29 cannot correctly detect the defrosting state of the refrigeration cooler 24 when at least one of the refrigeration cooler sensor 24a and the cold room temperature sensor 44 detects an abnormal value. . Even if the electrostatic atomizer 48 is operated in such a state, it may be useless, and at least one of the refrigerating cooler sensor 24a and the refrigerating room temperature sensor 44 detects an abnormal value. Moreover, the useless operation of the electrostatic atomizer 48 can be prevented by stopping the operation of the power supply device 52 of the electrostatic atomizer 48.

  When the control device 29 detects an abnormal state that the next defrosting operation of the refrigeration cooler 24 is not performed within a predetermined time, in this case, 60 minutes after the defrosting operation of the refrigeration cooler 24 is finished. Then, the driving of the power supply device 52 of the electrostatic atomizer 48 is stopped. According to this, whether or not the defrosting is good can be determined without depending on the refrigeration cooler sensor 24a or the refrigeration chamber temperature sensor 44, and the useless operation of the electrostatic atomizer 48 can also be prevented.

  When the control device 29 detects an abnormal state that the refrigeration blower fan 35 is abnormal, the control device 29 stops driving the power supply device 52 of the electrostatic atomizer 48. When the refrigeration blower fan 35 is abnormal, the defrosting of the refrigeration cooler 24 is not performed well, and the mist generated by the electrostatic atomizer 48 cannot be sprayed well. Since it is useless even if the electrostatic atomizer 48 is operated in such a case, the operation of the electrostatic atomizer 48 can be prevented by stopping the operation of the electrostatic atomizer 48.

  When the control device 29 stops driving the power supply device 52 of the electrostatic atomizer 48 by detecting the abnormal state, the control device 29 restarts the driving of the power supply device 52 when the release of the abnormal state is detected. Thereby, the electrostatic atomizer 48 can be effectively utilized by restarting the operation of the electrostatic atomizer 48 when the abnormal state is canceled.

  When the control device 29 stops driving the power supply device 52 of the electrostatic atomizer 48 due to the detection of the abnormal state, the temperature detected by the refrigeration cooler sensor 24a is increased by the defrosting operation of the refrigeration cooler 24. When the temperature rises to a threshold value, for example, plus 3 ° C., the driving of the power supply device 52 is resumed. If it can be detected that the temperature detected by the refrigeration cooler sensor 24a has risen to + 3 ° C., it can be determined that the refrigeration cooler 24 has been defrosted. Therefore, even if the operation of the electrostatic atomizer 48 is resumed. Mist can be generated satisfactorily and the electrostatic atomizer 48 can be used effectively.

  When the control device 29 stops the driving of the power supply device 52 of the electrostatic atomizer 48 due to the detection of the abnormal state, the control device 29 records this in the nonvolatile memory 77 and keeps the power supply until the release of the abnormal state is detected. The stop state of the device 52 is maintained. Thereby, even if a power failure or a power plug is inserted or removed, it is possible to prevent the electrostatic atomizer 48 from being operated while there is an abnormal state.

  The refrigerator-freezer of this embodiment employs a two-evaporation refrigeration cycle that includes two coolers, a refrigeration cooler 24 and a refrigeration cooler 25. Here, the ambient temperature of the refrigeration refrigerator 25 of the refrigerator / freezer that employs the two-evaporation refrigeration cycle as in this embodiment and the ambient temperature of the refrigerator of the one-evaporator refrigerator / freezer are excluded during defrosting. Although it becomes a positive temperature by heating with a frost heater, it is always at a temperature of -20 ° C or lower except during defrosting. If the water storage container is installed below these coolers, even if the defrost water is received and stored in the water storage container during defrosting of the cooler, the water in the water storage container is easily frozen and hardly melts. . For this reason, there is a problem that water cannot be stably supplied to the mist discharging unit 50.

  In this regard, in the present embodiment, in a two-evaporation type refrigerator-freezer provided with two coolers, a refrigeration cooler 24 and a refrigeration cooler 25, a water storage container 56 is installed below the refrigeration cooler 24. It was set as the structure to do. In the two-evaporation type refrigerator-freezer, the ambient temperature of the refrigeration cooler 24 is a negative temperature during the cooling operation of the refrigeration cooler 24, but is considerably higher than the temperature of the refrigeration cooler 25, During the defrosting of the refrigeration cooler 24 (during cooling operation of the refrigeration cooler 25 (during cooling of the storage room in the freezing temperature zone) or when the operation of the compressor 27 is stopped), air from the refrigeration blower fan 35 is removed. By circulation, the temperature rises to near + 3 ° C. near the temperature of the refrigerator compartment 3. For this reason, the water in the water storage container 56 installed below the refrigeration cooler 24 is difficult to freeze, and even if it freezes, it is easy to melt, so that the water supply to the mist discharge unit 50 can be stably performed. Can be done.

The mist discharge part 50 of the electrostatic atomizer 48 is configured by a plurality of mist discharge pins (protrusions) 57 protruding in different directions. With this configuration, unlike the case where the protruding direction of the projection for generating mist is only one direction, the supply direction of mist can be a plurality of directions, and the supply range of mist can be widened.
The mist discharge part 50 is configured such that the mist discharge pin (projection) 57 extends in the opposite direction up and down with the horizontal part 53a of the water supply part 53 in between, so that the mist can be discharged in the opposite direction above and below. The mist supply range can be widened. Further, the horizontal portion 53a of the water supply portion 53 and each mist discharge pin 57 are arranged along the front wall 36a so as to be parallel to the front wall 36a of the refrigeration cooler chamber 36 in the cold air duct 34. It is possible to reduce the thickness in the front-rear direction. By arranging the mist discharge pins (protrusions) 57 in two upper and lower stages, it is possible to reduce the size.
The mist discharge part 50 has a configuration in which a plurality of the mist discharge pins (projections) 57 are arranged in a line, so that the amount of mist discharge can be increased and the supply range of mist can be further widened. In addition, the thickness can be reduced.

  The water supply part 53 has a refracting part 53c. A water storage container 56 for storing water is provided below the refracting part 53c, and water stored in the water storage container 56 can be supplied to the refracting part 53c. The configuration. Thereby, the water of the water storage container 56 can be supplied to the mist discharge | release pin 57 via the bending part 53c. The power supply device 52 is disposed on the opposite side of the refracting portion 53c with the mist emitting portion 50 in between. Thereby, the power supply device 52 can be further separated from the water storage container 56.

In addition, by arranging the power supply device 52 and the mist generating unit 51 along the front wall 36a so as to be parallel to the front wall 36a of the refrigeration cooler chamber 36 in the cold air duct 34, electrostatic atomization is achieved. The device 48 can be thinned in the depth direction.
A mist discharge pin (projection) 57 in the mist discharge portion 50 of the electrostatic atomizer 48 is arranged along the cold air duct 34. Thereby, it becomes possible to suppress the depth dimension of the electrostatic atomizer 48 in the front-rear direction, and the thickness can be reduced. Accordingly, it is possible to suppress a decrease in the internal volume.

  A mist cold air supply port 62 for supplying cold air into the mist dedicated duct 45 is provided at the front of the cold air duct 34, and the mist discharge portion 50 of the electrostatic atomizer 48 is connected to the front of the cold air duct 34. Arranged. Accordingly, it is possible to fly the mist discharged from the mist discharge unit 50 far using the cooling air supplied from the mist cold air supply port 62 into the mist dedicated duct 45.

  Since the mist cold air supply port 62 and the mist discharge portion 50 (mist discharge pin 57) are arranged at positions shifted left and right so as to be different from the opposed positions, the mist cold air supply port 62 and the mist dedicated duct are disposed. The cooling air supplied into 45 does not directly hit the mist discharge part 50 (mist discharge pin 57). This makes it possible to prevent the mist discharge pin 57 from directly receiving the cooling air from the mist cold air supply port 62 and drying.

  The refrigerator main body 1 is provided with a dedicated mist duct 45 that accommodates the electrostatic atomizer 48 having the mist discharge unit 50, and the supply destination of the mist generated by the mist discharge unit 50 is different to the dedicated mist duct 45. Several mist outlets were installed. More specifically, the plurality of mist outlets are a mist outlet 63a for a refrigerator compartment, a mist outlet 65 for a chilled room, a mist outlet 66 for an egg case, and a mist outlet 67 for a vegetable compartment. Thus, the mist generated in the mist dedicated duct 45 can be supplied to the four supply destinations of the refrigerator compartment 3, the chilled compartment 14, the egg case 15, and the vegetable compartment 4, thereby widening the supply range of the mist. And the mist effect range can be expanded. Among the mist supply destinations, the chilled chamber 14, the egg case 15, and the vegetable chamber 4 have a chilled case 18, an egg case 15, and a vegetable case (lower case 11, upper case 12), respectively. It can be supplied satisfactorily.

  In this case, the plurality of mist outlets (the mist outlet 63a for the refrigerator compartment, the mist outlet 65 for the chilled room, the mist outlet 66 for the egg case, and the mist outlet 67 for the vegetable compartment) are the mist discharge part 50. Therefore, the mist discharged from the mist discharge section 50 can be satisfactorily supplied to each mist outlet.

The mist generating unit 51 has a mist discharge pin (projection) 57, and the plurality of mist outlets (the mist outlet 63a for the refrigerator compartment, the mist outlet 65 for the chilled chamber, the egg), and the egg Since the mist outlet 66 for the case and the mist outlet 67 for the vegetable compartment are arranged at positions different from the positions facing the mist discharge pins 57, the mist outlet ducts should be used by any chance. Even if a finger or a foreign object is inserted into 45, it can be prevented that they touch the mist discharge pin 57 directly, and safety can be ensured.
Further, since the duct component member 46 forming the mist dedicated duct 45 is detachable, maintenance of the mist generating unit 51 and the like can be easily performed.

(Second Embodiment)
FIG. 13 shows a second embodiment. In the second embodiment, the configuration of the mist generating unit 81 in the electrostatic atomizer 80 is different from that of the first embodiment.
The mist generating unit 81 includes a mist discharge unit 82 and a water supply unit 83 that supplies moisture to the mist discharge unit 82. The water supply part 83 has a circular part 83a that is circular when viewed from the front, and a vertical part 83b that extends downward from the circular part 83a, and a water retaining material 85 similar to that of the first embodiment is provided in the case 84. Contained and configured. The lower end portion of the vertical portion 83b passes through the lower portion of the duct component member 46 and the step portion 36b (see FIG. 8) at the front portion of the refrigeration cooler chamber 36, and is stored in the refrigeration cooler chamber 36. The container 56 is inserted from above. The circular portion 83a and the vertical portion 83b in the water supply portion 83 are arranged along the front wall 36a so as to be parallel to the front wall 36a of the refrigeration cooler chamber 36 in the cold air duct 34.

  The mist discharge part 82 is comprised by the several mist discharge | release pin 57 which each comprises a protrusion. The mist discharge pins 57 are provided radially on the outer periphery of the circular portion 83a. Therefore, the mist discharge | release part 82 is comprised by the several mist discharge | release pin 57 (protrusion part) which protrudes toward a different direction. The base end portion of each mist discharge pin 57 passes through the case 84 and is in contact with the water retention material 85. Each mist discharge pin 57 is also arranged along the front wall 36 a so as to be parallel to the front wall 36 a of the refrigeration cooler chamber 36 in the cold air duct 34.

  A protrusion 83c that protrudes to the left is provided on the left side of the circular part 83a in the water supply part 83, and the power reception pin 58 is provided in a state of protruding to the left in the protrusion 83c. The power reception pin 58 is connected to the power supply terminal 61 on the power supply device 52 side.

In this configuration, the water stored in the water storage container 56 is sucked up by the water retaining material 85 and supplied to each mist discharge pin 57. Further, a negative high voltage from the power supply device 52 is applied from the power receiving pin 58 to each mist discharge pin 57 through the moisture of the water retaining material 85, and based on this, fine mist is discharged from each mist discharge pin 57. Is done. The mist discharged from each mist discharge pin 57 is a plurality of mist outlets (refrigeration room mist outlet 63a, chilled room mist outlet 65, egg case mist outlet 66, as in the first embodiment. It is supplied from the vegetable room mist outlet 67) to a plurality of supply destinations such as the refrigerator room 3, the chilled room 14, the egg case 15, and the vegetable room 4.
In such 2nd Embodiment, since the mist discharge | release pin 57 is arrange | positioned radially, there exists an advantage which can discharge | release mist further in many directions rather than the case of 1st Embodiment.

(Other embodiments)
A defrosting heater may be provided in the vicinity of the refrigeration cooler 24. In addition, a heater for preventing freezing may be provided in the water storage container 56.

  As described above, according to the refrigerator of the present embodiment, in the case where the defrost water of the cooler is used as the water source of the electrostatic atomizer, the control means detects a high voltage in the electrostatic atomizer when an abnormal state is detected. The power supply is stopped. Thereby, it is possible to prevent the operation of the electrostatic atomizer from being wasted.

  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.

  In the drawings, 1 is a refrigerator body, 3 is a refrigerator room (storage room), 4 is a vegetable room (storage room), 5 is an ice making room, 6 is a small freezer room, 7 is a freezer room, 14 is a chilled room (storage room). , 24 is a refrigeration cooler (cooler), 24a is a refrigeration cooler sensor (cooler sensor), 25 is a refrigeration cooler, 29 is a control device (control means), 31 is a refrigeration blower fan, and 34 is Cold air duct, 35 is a refrigeration fan (blower fan), 45 is a dedicated mist duct, 48 is an electrostatic atomizer, 50 is a mist discharge unit, 51 is a mist generating unit, 52 is a power supply (high voltage power supply) , 53 is a water supply section, 55 is a water retention material, 56 is a water storage container (water storage section), 57 is a mist discharge pin, 62 is a mist cool air supply port, 63 is a mist duct for a refrigerator compartment, and 63a is a mist blower for a refrigerator compartment. Outlet, 65 is mist outlet for chilled chamber, 66 is for egg case Strike outlet, 67 is a vegetable compartment mist outlet, 80 is an electrostatic atomizer, 81 mist generation unit, 82 is the mist discharge portion, 83 denotes a water supply unit.

Claims (10)

A refrigerator body having a storage room;
A cooler for cooling the storage chamber;
An electrostatic atomizer that has a high-voltage power supply and uses defrost water of the cooler as a water source, and generates mist by applying a high voltage with the high-voltage power supply;
Control means,
The said control means stops the drive of the said high voltage power supply, when an abnormal state is detected, The refrigerator characterized by the above-mentioned. A cooler sensor for detecting the temperature of the cooler;
The control means stops driving of the high-voltage power supply when detecting an abnormal state in which the temperature detected by the cooler sensor does not rise to a threshold value within a predetermined time after starting the defrosting operation of the cooler. The refrigerator according to claim 1. An internal temperature sensor for detecting the temperature in the storage chamber;
When the control means detects an abnormal state in which the temperature detected by the internal temperature sensor does not drop to a threshold even if the cooling operation by the cooler for cooling the storage chamber is performed for a predetermined time, the control means drives the high-voltage power supply. The refrigerator according to claim 1, wherein the refrigerator is stopped. A cooler sensor for detecting the temperature of the cooler;
2. The refrigerator according to claim 1, wherein the control unit stops driving the high-voltage power supply when detecting an abnormal state in which a temperature detected by the cooler sensor is lower than a threshold value. A cooler sensor for detecting the temperature of the cooler, and an internal temperature sensor for detecting the temperature in the storage chamber,
The control means stops driving the high-voltage power supply when detecting an abnormal state in which at least one of the cooler sensor and the internal temperature sensor detects an abnormal value. The refrigerator according to claim 1.   The control means stops driving the high-voltage power supply when detecting an abnormal state that the next defrosting operation of the cooler is not performed within a predetermined time after the defrosting operation of the cooler is finished. The refrigerator as described in any one of Claims 1-5 characterized by the above-mentioned. A blower fan for flowing cool air from the cooler to the storage room;
The refrigerator according to any one of claims 1 to 6, wherein when the abnormal state that the blower fan is abnormal is detected, the control unit stops the driving of the high-voltage power supply.   The control means, when stopping the driving of the high voltage power supply by detecting the abnormal state, restarts the driving of the high voltage power supply when detecting the release of the abnormal state. The refrigerator as described in any one of claim | item 1 -7.   In the case where the driving of the high-voltage power supply is stopped due to the detection of the abnormal state, the control means, when the temperature detected by the cooler sensor rises to a positive temperature threshold by the defrosting operation of the cooler, The refrigerator according to claim 2 or 4, wherein the driving of the high-voltage power supply is resumed. With non-volatile memory,
When the control means stops the driving of the high voltage power supply by detecting the abnormal state, it records that in the non-volatile memory, and the high voltage power supply is stopped until the cancellation of the abnormal state is detected. The refrigerator according to any one of claims 1 to 9, wherein the refrigerator is maintained.

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