JP4151743B1 - refrigerator - Google Patents

Abstract

In a refrigerator in which mist is sprayed using an atomizer, water or ozone water is atomized by an ultrasonic vibration element so that the atomized water particles or ozone water particles do not become fine and are sprayed uniformly. It was not possible to do so, and there were problems such as water rot of vegetables and condensation in the storage.
In addition, a configuration such as a defrost hose and a purification filter is necessary, and a heater for preventing freezing is necessary, which complicates the configuration.
An atomizing electrode provided in an electrostatic atomizing device is indirectly cooled by a cooling means via a cooling pin that is a heat transfer cooling member, so that the atomizing electrode is submerged in air. By condensing moisture and spraying it as a mist in the storage room, it is possible to stably condense moisture to the atomizing electrode with a simple configuration, and improve the food preservation while improving the reliability of the refrigerator Can do.
[Selection] Figure 3

Description

  The present invention relates to a refrigerator in which an atomizing device is installed in a storage room space for storing vegetables and the like.

  Factors that affect the decline in freshness of vegetables include temperature, humidity, environmental gas, microorganisms, and light. Vegetables are living things, and respiration and transpiration are performed on the surface of the vegetables. To maintain freshness, it is necessary to suppress respiration and transpiration. Except for some vegetables that cause low-temperature injury, many vegetables have low respiration at low temperatures and can prevent transpiration due to high humidity. In recent years, refrigerators for home use have a sealed vegetable container for the purpose of preserving vegetables, cooling the vegetables to an appropriate temperature, and controlling the transpiration of the vegetables, such as increasing the humidity in the cabinet. ing. Here, there exists what sprays mist as a humidification means in a store | warehouse | chamber.

  Conventionally, refrigerators equipped with this kind of mist spraying function are those that produce and spray mist with an ultrasonic atomizer when the vegetable compartment is low in humidity, humidify the vegetable compartment, and suppress transpiration of vegetables (for example, Patent Document 1).

  FIG. 13 shows a longitudinal section of a vegetable room of a conventional refrigerator described in Patent Document 1. FIG. 14 is an enlarged perspective view showing a main part of an ultrasonic atomizer provided in a vegetable room of a conventional refrigerator.

  As shown in FIG. 13, the vegetable compartment 21 is provided in the lower part of the main body case 26 of the refrigerator main body 20, The front opening is closed by the drawer door 22 with which it can be opened and closed freely. Moreover, the vegetable compartment 21 is partitioned off from the upper refrigerator compartment (not shown) by the partition plate 2.

  A fixed hanger 23 is fixed to the inner surface of the drawer door 22, and the vegetable container 1 for storing food such as vegetables is mounted on the fixed hanger 23. The top opening of the vegetable container 1 is sealed with a lid 3. A thawing chamber 4 is provided inside the vegetable container 1, and an ultrasonic atomizer 5 is provided in the thawing chamber 4.

  As shown in FIG. 14, the ultrasonic atomizer 5 includes a mist outlet 6, a water storage container 7, a humidity sensor 8, and a hose receiver 9. The water storage container 7 is connected to a defrost water hose 10 by a hose receiver 9. The defrost water hose 10 is provided with a purification filter 11 for purifying the defrost water at a part thereof.

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

  Cooling air cooled by a heat exchange cooler (not shown) flows through the outer surfaces of the vegetable container 1 and the lid 3, whereby the vegetable container 1 is cooled and the food stored therein is cooled. Further, the defrost water generated from the cooler during the refrigerator operation is purified by the purification filter 11 when passing through the defrost water hose 10 and supplied to the water storage container 7 of the ultrasonic atomizer 5.

  Next, when the humidity sensor 8 detects that the internal humidity is 90% or less, the ultrasonic atomizing device 5 starts humidification, so that the humidity in the vegetable container 1 is kept at a suitable level. Humidity can be adjusted.

  On the other hand, when the humidity sensor 8 detects that the internal humidity is 90% or more, the ultrasonic atomizer 5 stops excessive humidification. As a result, the ultrasonic atomizer 5 can quickly humidify the vegetable compartment, the humidity in the vegetable compartment is always high, the transpiration action of the vegetable or the like is suppressed, and the freshness of the vegetable or the like can be maintained.

  Moreover, the refrigerator provided with the ozone water mist apparatus is shown (for example, refer patent document 2).

The refrigerator has an ozone generator, an exhaust port, a water supply path directly connected to a water supply, and an ozone water supply path in the vicinity of the vegetable compartment. The ozone water supply route is led to the vegetable room. The ozone generator is connected to a water supply unit directly connected to the water supply. Further, the exhaust port is configured to be connected to the ozone water supply path. In addition, an ultrasonic element is provided in the vegetable compartment. Ozone generated by the ozone generator is brought into contact with water to become ozone water as treated water. The generated ozone water is guided to the vegetable compartment of the refrigerator, atomized by an ultrasonic vibrator, and sprayed to the vegetable compartment.
JP-A-6-257933 JP 2000-220949 A

  However, in the above-described conventional configuration, the water supplied to the atomizer uses water in a water storage container in which defrost water is stored or tap water, so a defrost water hose, a purification filter, or water supply directly connected to the water supply A configuration such as a route and a heater for preventing freezing is necessary, and the configuration is complicated.

  In addition, in the above conventional configuration, when spraying mist on the refrigerator storage room which is a substantially sealed low temperature space, in order to prevent problems due to excessive condensation in the storage room due to excessive spray amount or spraying in a drought condition However, it is necessary to realize a stable spray without unevenness, but no suggestion or disclosure has been made for the problem.

  The present invention condenses the water vapor present in the cabinet in the storage of vegetables and other fruits and vegetables, and uses the condensed water to generate and spray a fine mist with a uniform and stable spray amount. The purpose is to improve the freshness.

  Also, fine mist can be stably supplied to the storage room with a simple configuration without requiring a complicated configuration such as a defrost hose or purification filter for supplying water for mist spraying, or a water supply path directly connected to the water supply. The purpose is to do.

  In order to solve the above-described conventional problems, the refrigerator of the present invention has a storage compartment that is thermally insulated and an atomization unit that sprays mist into the storage chamber, and the atomization unit is sprayed with mist. An atomization tip, a heat transfer cooling member connected to the atomization tip, and a cooling means for cooling the heat transfer cooling member, wherein the cooling means cools the heat transfer cooling member. Indirectly, the atomization tip is cooled below the dew point, moisture in the air is condensed on the atomization tip and sprayed as mist on the storage chamber.

  Accordingly, the atomization tip can be indirectly cooled by cooling the heat transfer cooling member without directly cooling the atomization tip, and the heat transfer cooling member has a larger heat capacity than the atomization tip. When the temperature of the cooling means is reduced, the atomization tip can be stably cooled after mitigating that the temperature change of the cooling means directly affects the amount of condensation on the atomization tip directly. It is possible to realize a mist spray with a stable spray amount without unevenness by suppressing the load fluctuation at the tip.

  In addition, the cooling source generated in the refrigeration cycle of the refrigerator is effectively used without requiring a complicated configuration such as a defrosting water hose or purification filter for supplying water for mist spraying, or a water supply path directly connected to a water supply. By using it, fine mist can be supplied to the storage room with a simple configuration.

  In addition, when excessive water vapor in the storage chamber can be easily and reliably condensed on the atomizing tip, and when the atomizing tip is an atomizing electrode to which a high voltage is applied between the counter electrode Nano fine mist is generated, and the fine mist is atomized and sprayed to uniformly adhere to the surface of vegetables and other fruits and vegetables, thereby improving the freshness of food.

  Since the refrigerator of the present invention can stably supply fine mist to the storage chamber with a simple configuration, the quality of the refrigerator can be improved while further improving the reliability of the refrigerator.

The invention according to claim 1 has a heat-insulated compartment storage room, and an atomization part for spraying mist in the storage room, and the atomization part is an atomization tip part to which mist is sprayed, A heat transfer cooling member connected to the atomizing tip , the atomizing tip fixed to one end of the heat transfer cooling member and electrically connected thereto ; A cooling means for cooling, and the cooling means cools the heat transfer cooling member to indirectly cool the atomization tip to a dew point or less, and condenses moisture in the air to the atomization tip. And sprayed as a mist on the storage chamber.

  Accordingly, the atomization tip can be indirectly cooled by cooling the heat transfer cooling member without directly cooling the atomization tip, and the heat transfer cooling member has a larger heat capacity than the atomization tip. When the temperature of the cooling means is reduced, the atomization tip can be stably cooled after mitigating that the temperature change of the cooling means directly affects the amount of condensation on the atomization tip directly. It is possible to realize a mist spray with a stable spray amount without unevenness by suppressing the load fluctuation at the tip.

  In addition, the cooling source generated in the refrigeration cycle of the refrigerator is effectively used without requiring a complicated configuration such as a defrosting water hose or purification filter for supplying water for mist spraying, or a water supply path directly connected to a water supply. By using it, fine mist can be supplied to the storage room with a simple configuration.

  In addition, when excessive water vapor in the storage chamber can be easily and reliably condensed on the atomizing tip, and when the atomizing tip is an atomizing electrode to which a high voltage is applied between the counter electrode Nano fine mist is generated, and the fine mist is atomized and sprayed to uniformly adhere to the surface of vegetables and other fruits and vegetables, thereby improving the freshness of food.

  The invention according to claim 2 is the invention according to claim 1, wherein the heat transfer cooling member is cooled by the cooling means via the heat relaxation member.

  As a result, the atomization tip can be cooled indirectly with a double structure via the heat relaxation member in addition to the one that is indirectly cooled by the heat transfer cooling member, and the atomization tip is extremely cooled. Can be prevented. When the atomization tip is extremely cooled, the atomization failure due to freezing of the droplets or the amount of condensation is increased, increasing the input to the atomization unit due to an increase in the load of the atomization, and the atomization tip However, in the case of an atomizing electrode to which a high voltage is applied between the counter electrode, generation of ozone and an increase in surface tension due to an increase in the surface area of the droplet occur, and miniaturization by electrostatic force can be achieved. However, there is a concern about poor atomization in the atomizing section. However, it is possible to prevent problems caused by the increased load on the atomizing section, to secure an appropriate amount of condensation, and to stabilize mist with low input. Spraying can be realized.

  In addition, by indirectly cooling with a double structure via a heat relaxation member, it is possible to further mitigate the fact that the temperature change of the cooling means directly affects the atomization tip part directly. It is possible to suppress the load fluctuation at the tip and realize a mist spray with a stable spray amount.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the refrigerator main body has a plurality of storage chambers and a cooling chamber for storing a cooler for cooling the storage chamber, The conversion unit is attached to the partition wall on the cooling chamber side of the storage chamber.

  As a result, pipes that are generated in the cooling chamber that is the coldest of the cold air that is cooled using the cooling source generated in the refrigeration cycle of the refrigerator, and that are transported by a fan or the like, or a pipe that uses heat conduction from the cold air, etc. These members can be used as cooling means. Since the cooling means can be configured with such a simple structure, it is possible to realize an atomizing section with few failures and high reliability. In addition, since the heat transfer cooling member and the atomizing tip can be cooled using the cooling source of the refrigeration cycle, atomization can be performed with energy saving.

  In addition, the storage volume is not reduced by being installed in the gap in the storage chamber, and the safety is improved because it is not easily touchable by being attached to the back surface.

  The invention according to claim 4 is the invention according to claim 1 or 2, wherein the refrigerator main body has a plurality of storage rooms, and the atomization part is provided on the top surface side of the storage room provided with the atomization part. A low-temperature storage chamber maintained at a lower temperature than the storage chamber is provided, and the atomizing portion is attached to a partition wall on the top surface side of the storage chamber including the atomizing portion.

  As a result, when the storage room in the freezing temperature zone such as a freezer room or ice making room is at the upper part, the atomization part is installed on the partition wall of the top surface that partitions them, and the heat transfer cooling of the atomization part with its cooling source Since the atomizing tip can be cooled and condensed through the member, a special cooling device is unnecessary, and the atomizing unit can be provided with a simple configuration. Can be realized.

  Further, since the mist can be sprayed from the top surface, it can be easily diffused throughout the storage container, and it is difficult to touch a human hand, so that safety can be improved.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the partition wall to which the atomizing section is attached has a recess on the storage chamber side, and the recess is heat transfer cooled. A member is inserted.

  Thereby, in addition to what cools an atomization front-end | tip part indirectly with a heat-transfer cooling member, the heat insulating material which comprises the partition wall of the storage chamber as a heat relaxation member can be used, and a special heat relaxation member is provided. Without adjusting the thickness of the heat insulating material, the atomization tip can be adjusted to be appropriately cooled, and the atomization section can be provided with a simple configuration.

  Also, by inserting the heat transfer cooling member into the recess, the atomization part can be securely attached to the partition wall without rattling, and the protrusion to the storage room side can be suppressed, and it can also be touched by human hands. It is difficult to improve safety.

  Moreover, since the atomization part does not protrude on the outer side across the partition wall of the storage chamber, it is possible to prevent the cooling amount from being lowered by increasing the air passage resistance without affecting the air passage cross-sectional area.

  In addition, there is a recess on a part of the storage room side, and a heat transfer cooling member that is a cooling means for the atomizing tip is inserted there, which may affect the storage capacity for storing fruits and vegetables. In addition, the heat transfer cooling member can be reliably cooled, and the wall thickness that can ensure heat insulation can be secured for the other parts, so that condensation in the case can be prevented and reliability can be improved. it can.

  The invention according to claim 6 is the invention according to any one of claims 1 to 4, wherein the partition wall to which the atomizing part is attached has a through part, and the heat transfer cooling member is provided in the through part. Is inserted.

  As a result, since the thin wall portion is not formed on the partition wall, for example, even when a heat insulating material such as polystyrene or urethane is used for the heat insulating wall, molding can be easily performed, and there is no problem such as breakage during assembly.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the cooling means for cooling the heat transfer cooling member uses cold air generated in the cooling chamber.

  As a result, the cooling efficiency of the atomization tip is improved even in relatively high cold air by cooling the atomization tip with the heat transfer cooling member and further cooling with indirect heat conduction using cold air. Can be improved. Moreover, it can prevent that an atomization front-end | tip part is cooled extremely by cooling by double indirect heat conduction. When the tip of the atomization is extremely cooled, the amount of dew condensation increases accordingly, and there is a concern about an increase in input to the atomization unit due to an increase in the load of the atomization unit and poor atomization of the atomization unit. It is possible to prevent problems caused by the increased load of the atomizing section, to secure an appropriate amount of condensation, and to realize a stable mist spray with a low input.

  Moreover, since it is not necessary to add a special part as a cooling means, the atomization unit can be provided with a simple configuration, and thus an atomization unit with few failures and high reliability can be realized.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, wherein the cooling means for cooling the heat transfer cooling member is heat from an air passage through which cool air generated by the cooler flows. Conduction is used.

  As a result, the cooling efficiency of the atomization tip is improved even in relatively high cold air by cooling the atomization tip with the heat transfer cooling member and further cooling with indirect heat conduction using cold air. Can be improved. Moreover, it can prevent that an atomization front-end | tip part is cooled extremely by cooling by double indirect heat conduction. If the atomization tip is extremely cooled, the amount of dew condensation increases accordingly, and there is a concern about an increase in input to the atomization unit due to an increase in the load on the atomization unit and an atomization failure due to freezing of the atomization unit, etc. However, it is possible to prevent problems due to such an increase in the load of the atomizing section, to ensure an appropriate amount of condensation, and to realize a stable mist spray with a low input.

  Moreover, since it is not necessary to add a special part as a cooling means, the atomization unit can be provided with a simple configuration, and thus an atomization unit with few failures and high reliability can be realized.

  The invention according to claim 9 is the invention according to any one of claims 1 to 7, wherein the cooling means for cooling the heat transfer cooling member is cooled using a cooling source generated in a refrigeration cycle of the refrigerator. The heat transfer from the cooled pipe is used.

  Accordingly, by adjusting the temperature of the cooling pipe, the heat transfer cooling member can be cooled to an arbitrary temperature, and it becomes easy to perform temperature management when cooling the atomizing tip.

  The invention according to claim 10 is the invention according to any one of claims 1 to 9, wherein the heat transfer cooling member has a convex portion on the opposite side to the atomizing tip, and the inside of the atomizing portion. The end portion on the convex side is the closest to the cooling means.

  As a result, the cooling means cools the heat transfer cooling member at the farthest part from the atomization tip, and after cooling the heat transfer cooling member having a large heat capacity, By cooling the front end of the mist, it is possible to further alleviate the fact that the temperature change of the cooling means has a great influence directly on the front end of the atomization, and to realize a stable mist spray with a smaller fluctuation load. .

  Furthermore, since heat insulation can be ensured except for the convex portions, only the convex portions can be cooled without greatly affecting the temperature in the storage chamber.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a longitudinal cross-sectional view showing a cross section when the refrigerator in Embodiment 1 of the present invention is cut left and right. FIG. 2 is a front view of a main part showing the back surface of the vegetable room in the refrigerator according to Embodiment 1 of the present invention. 3 is a cross-sectional view of the periphery of the electrostatic atomizer provided in the vegetable compartment in the refrigerator according to Embodiment 1 of the present invention, cut along line AA in FIG.

  In the figure, a heat insulating box 101 which is a refrigerator main body of the refrigerator 100 includes an outer box 102 mainly using a steel plate, an inner box 103 formed of a resin such as ABS, and the outer box 102 and the inner box 103. It is comprised with foaming heat insulating materials, such as hard foaming urethane etc. which are foam-filled in the space of this, is heat-insulated with the circumference | surroundings, and is thermally insulated by the partition wall in the several storage chamber. A refrigeration chamber 104 as a first storage chamber is provided at the top, and a switching chamber 105 as a fourth storage chamber and an ice making chamber 106 as a fifth storage chamber are provided side by side below the refrigeration chamber 104. A vegetable room 107 as a second storage room is arranged below the chamber 105 and the ice making room 106, and a freezing room 108 as a third storage room is arranged at the bottom.

  The refrigerated room 104 is normally set to 1 ° C. to 5 ° C. at the lower limit of the temperature at which it is not frozen for refrigerated storage, and the vegetable room 107 is set to 2 ° C. to 7 ° C., which is set at a temperature that is the same or slightly higher than that of the refrigerated room 104. The freezer compartment 108 is set in a freezing temperature zone, and is usually set at −22 ° C. to −15 ° C. for frozen storage, but for example, −30 ° C. or −25 ° C. to improve the frozen storage state. It may be set at a low temperature.

  The switching chamber 105 is not only refrigerated set at 1 ° C to 5 ° C, vegetable set at 2 ° C to 7 ° C, and frozen at a temperature set at -22 ° C to -15 ° C. It is possible to switch to a preset temperature range between the freezing temperature ranges. The switching chamber 105 is a storage chamber provided with an independent door arranged in parallel with the ice making chamber 106, and is often provided with a drawer-type door.

  In the present embodiment, the switching chamber 105 is a storage room including the temperature range of refrigeration and freezing. A storage room specialized for switching only the temperature zone in the middle of freezing may be used. Moreover, the storage room fixed to the specific temperature range may be sufficient.

  The ice making chamber 106 creates ice with an automatic ice maker (not shown) provided in the upper part of the room with water sent from a water storage tank (not shown) in the refrigerated room 104, and an ice storage container ( (Not shown).

  The top surface portion of the heat insulating box 101 has a stepped recess shape toward the back of the refrigerator. A machine chamber 101a is formed in the stepped recess, and the compressor 109, moisture is formed in the machine chamber 101a. Houses high pressure side components of the refrigeration cycle such as a dryer (not shown) for removal. That is, the machine room 101 a in which the compressor 109 is disposed is formed by biting into the uppermost rear region in the refrigerator compartment 104.

  By providing the machine room 101a in the rear region of the uppermost storage room of the heat insulation box 101 that is difficult to reach and is a dead space, the compressor 109 is arranged, so that the user can use the heat insulation box in a conventional refrigerator. The space in the machine room at the bottom of the body 101 can be effectively converted as the storage room capacity, and the storage performance and usability can be greatly improved.

  In the present embodiment, the matter relating to the main part of the invention described below is a type in which a compressor room is provided by providing a machine room in the rear region of the lowermost storage room of the heat insulating box 101, which has been generally used conventionally. It may be applied to other refrigerators.

  A cooling chamber 110 that generates cold air is provided on the back of the vegetable compartment 107 and the freezing chamber 108, and is partitioned from an air passage 141. Between these air passages 141 is a cool air conveying air passage 141 to each chamber having heat insulation properties. A rear partition wall 111 configured to thermally insulate each storage room is configured. In addition, a partition plate 161 for separating the freezing chamber discharge air passage 141 and the cooling chamber 110 is provided. In the cooling chamber 110, a cooler 112 is disposed, and in the upper space of the cooler 112, the cold air cooled by the cooler 112 by a forced convection method is stored in the refrigerator 104, the switching chamber 105, the ice making chamber 106, the vegetables. A cooling fan 113 for blowing air to the chamber 107 and the freezing chamber 108 is disposed.

  Further, a radiant heater 114 made of a glass tube is provided in the lower space of the cooler 112 for defrosting the frost and ice adhering to the cooler 112 and its surroundings during cooling, and further, the lower part is generated during the defrosting. A drain pan 115 for receiving defrosted water, a drain tube 116 penetrating from the deepest part to the outside of the warehouse are configured, and an evaporating dish 117 is configured outside the downstream side of the warehouse.

  In the vegetable compartment 107, a lower storage container 119 placed on a frame attached to the drawer door 118 of the vegetable compartment 107 and an upper storage container 120 placed on the lower storage container 119 are arranged.

  A lid 122 for mainly sealing the upper storage container 120 in a state where the drawer door 118 is closed is held by the first partition wall 123 and the inner box 103 at the top of the vegetable compartment. With the drawer door 118 closed, the left and right sides and the back side of the top surface of the lid body 122 and the upper storage container 120 are in close contact with each other, and the front side of the top surface is in close contact. Furthermore, the left and right lower sides of the back surface of the upper storage container 120 and the boundary between the lower storage container 119 are provided with a gap so that moisture in the food storage section does not escape within a range where the upper storage container 120 is not in contact with the upper storage container 120 in operation.

  Between the lid body 122 and the first partition wall 123, there is provided an air passage for the cold air discharged from the vegetable room discharge port 124 formed in the rear partition wall 111. Further, a space is also provided between the lower storage container 119 and the second partition wall 125 to constitute a cold air passage. In the lower part of the rear partition wall 111 on the back of the vegetable compartment 107, there is provided a vegetable compartment suction port 126 for cooling the inside of the vegetable compartment 107 and returning heat exchanged to the cooler 112.

  It should be noted that the matters relating to the main part of the invention described below in the present embodiment may be applied to a refrigerator that is opened and closed by a frame attached to a door and a rail provided in an inner box, which has been conventionally common. I do not care.

  The rear partition wall 111 is made of foamed polystyrene for isolating the rear partition wall surface 151 made of a resin such as ABS, the air passage 141 and the cooling chamber 110, and ensuring the heat insulation of the storage chamber. The heat insulating material 152 is used. Here, a recess 111a is provided in a part of the wall surface of the back partition wall 111 on the storage chamber side so as to be cooler than other locations, and the electrostatic atomizer 131 is installed at that location.

  The electrostatic atomizer 131 mainly includes an atomizing unit 139, a voltage applying unit 133, and an outer case 137. A spray port 132 and a humidity supply port 138 are configured in part of the outer case 137. The atomizing part 139 is provided with an atomizing electrode 135 that is an atomizing tip, and the atomizing electrode 135 is fixedly connected to a cooling pin 134 that is a heat transfer cooling member made of a good heat conducting member such as aluminum or stainless steel. is doing.

  The atomizing portion 139 is provided with an atomizing electrode 135, the atomizing electrode 135 is an electrode connecting member made of a good heat conducting member such as aluminum, stainless steel, or brass, and the atomizing electrode 135 is substantially at one end of the cooling pin 134. It is fixed to the center and electrically connected including one end wired from the voltage application unit 133.

  The cooling pin 134 as the electrode connecting member is formed in a cylindrical shape having a diameter of about 10 mm and a length of about 15 mm, and has a diameter of about 1 mm and a length of about 5 mm, compared to the atomizing electrode 135. It has a large heat capacity of 50 times or more, preferably 100 times or more. The material is preferably a high heat conductive member such as aluminum or copper. In order to efficiently transfer cold heat from one end of the cooling pin 134 to the other end, it is desirable that the periphery is covered with a heat insulating material 152.

  In addition, since it is necessary to maintain the heat conduction of the atomizing electrode 135 and the cooling pin 134 in the long term, an epoxy member or the like is poured into the connecting portion to prevent intrusion of humidity or the like, and the thermal resistance is suppressed. The atomization electrode 135 and the cooling pin 134 are fixed. Further, the atomizing electrode 135 may be fixed to the cooling pin 134 by press fitting or the like in order to reduce the thermal resistance.

  Further, since the cooling pin 134 needs to conduct heat in the heat in the heat insulating material 152 for insulating the storage chamber and the cooler 112 or the air passage, the length of the cooling pin 134 should be 5 mm or more, preferably 10 mm or more. desirable. However, it is desirable that the length of the cooling pin 134 is 5 mm or more, preferably 10 mm or more. However, when the length is 30 mm or more, the effect is reduced.

  In addition, since the electrostatic atomizer 131 installed in the storage room (vegetable room 107) is in a high humidity environment and the humidity may affect the cooling pin 134, the cooling pin 134 is corrosion resistant, It is preferable to select a metal material having rust resistance performance or a material subjected to surface treatment or coating such as alumite treatment.

  In this embodiment, since the shape of the cooling pin 134 that is a heat transfer cooling member is a cylinder, the electrostatic atomizer 131 is fitted even if the fitting size is slightly tight when fitting into the recess 111a of the heat insulating material 152. Since it can be press-fitted and attached while rotating, the cooling pin 134 can be attached without any gap. The shape of the cooling pin 134 may be a rectangular parallelepiped or a regular polygon, and in the case of these polygons, positioning is easier than a cylinder, and the electrostatic atomizer 131 can be provided at an accurate position.

  Furthermore, by attaching the atomizing electrode 135 as the atomizing tip on the central axis of the cooling pin 134, when the cooling pin 134 is attached, the distance between the counter electrode 136 and the atomizing electrode 135 is kept constant even if it is rotated. And a stable discharge distance can be secured.

  A cooling pin 134, which is a heat transfer cooling member, is fixed to the outer case 137, and the cooling pin 134 itself has a convex portion 134a protruding from the outer shell. The cooling pin 134 has a shape having a convex portion 134 a on the opposite side of the atomizing electrode 135, and the convex portion 134 a is fitted into the deepest concave portion 111 b deeper than the concave portion 111 a of the back partition wall 111.

  Therefore, the deepest recess 111b deeper than the recess 111a is provided on the back side of the cooling pin 134, which is a heat transfer cooling member, and the heat insulating material 152 is provided on the cooling chamber 110 side of the heat insulating material 152, that is, on the air passage 141 side. It is thinner than the other part of the rear partition wall 111 on the back side of the vegetable compartment 107, and this thin heat insulating material 152 is used as a heat relaxation member, and the cool air in the cooling chamber 110 from the back is a heat insulation material 152 as a heat relaxation member. The cooling pin 134 is installed to be cooled via

  In addition, the cooling pins 134 that are heat transfer cooling members are cooled by using the cool air generated in the cooling chamber 110, and the cooling pins 134 are formed of metal pieces having good thermal conductivity. The cooling necessary for the condensation of the atomizing electrode 135, which is the atomizing tip, can be performed only by heat conduction from the air path (cooling chamber discharge air path 141) through which the cold air generated in 112 flows, and the condensation is generated. It becomes possible.

  Since the cooling means can be configured with such a simple structure, atomization with few failures and high reliability can be realized. Moreover, since the cooling pin 134 which is a heat transfer cooling member and the atomization electrode 135 which is an atomization front-end | tip part can be cooled using the cooling source of a refrigerating cycle, atomization can be performed with energy saving.

  At this time, the cooling pin 134 that is the heat transfer cooling member of the present embodiment has a shape having the convex portion 134a on the opposite side to the atomizing electrode 135 that is the atomizing tip, and thus the atomizing portion 139. Among them, the end 134b on the convex portion 134a side is closest to the cooling means, so that the cooling pin 134 is cooled by the cold air that is the cooling means from the end 134b farthest from the atomizing electrode 135.

  Further, a donut disk-shaped counter electrode 136 is attached to the storage chamber (vegetable chamber 107) side at a position facing the atomizing electrode 135 so as to maintain a certain distance from the tip of the atomizing electrode 135, and the extension A spray port 132 is formed.

  Further, a voltage application unit 133 is configured in the vicinity of the atomization unit 139, and the negative potential side of the voltage application unit 133 that generates a high voltage is electrically connected to the atomization electrode 135 and the positive potential side is electrically connected to the counter electrode 136, respectively. Yes.

  In the vicinity of the atomizing electrode 135, discharge always occurs due to the mist spraying, and therefore, there is a possibility that the tip of the atomizing electrode 135 is worn. Since the refrigerator 100 generally operates for a long period of 10 years or longer, the surface of the atomizing electrode 135 needs to have a tough surface treatment. For example, nickel plating, gold plating, or platinum plating is used. It is desirable.

  The counter electrode 136 is made of, for example, stainless steel, and it is necessary to ensure its long-term reliability. In particular, in order to prevent foreign matter adhesion and contamination, it is desirable to perform surface treatment such as platinum plating.

  The voltage application unit 133 communicates with and is controlled by the control means 146 of the refrigerator main body, and performs high voltage ON / OFF by an input signal from the refrigerator 100 or the electrostatic atomizer 131.

  In this embodiment, since the voltage application unit 133 is installed in the electrostatic atomizer 131 and becomes a low temperature and high humidity atmosphere in the storage room (vegetable room 107), on the substrate surface of the voltage application unit 133, Applying bold material and coating material for moisture prevention.

  However, when the voltage application part 133 is installed in the high temperature part outside a storage room, it is not necessary to perform coating.

  The rear partition wall surface 151 to which the electrostatic atomizer 131 is fixed has heating means 154 such as a heater for adjusting the temperature of the storage room (vegetable room 107) or preventing condensation on the surface. It is installed between the rear partition wall surface 151 and the heat insulating material 152.

  About the refrigerator 100 of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the operation of the refrigeration cycle will be described. The refrigeration cycle is operated by a signal from a control board (not shown) according to the set temperature in the cabinet, and the cooling operation is performed. The high-temperature and high-pressure refrigerant discharged by the operation of the compressor 109 is condensed to some extent by a condenser (not shown), and further, the side or back of the refrigerator main body (heat insulating box 101), or the refrigerator main body (heat insulating box 101). ) Is condensed and liquefied while preventing condensation of the refrigerator main body (heat insulating box body 101) through a refrigerant pipe (not shown) disposed in the front opening of the) and reaches a capillary tube (not shown). After that, the capillary tube is depressurized while exchanging heat with a suction pipe (not shown) to the compressor 109 to become a low-temperature and low-pressure liquid refrigerant and reaches the cooler 112.

  Here, the low-temperature and low-pressure liquid refrigerant exchanges heat with the air in each storage chamber such as the freezer discharge air passage 141 conveyed by the operation of the cooling fan 113, and the refrigerant in the cooler 112 evaporates. At this time, cool air for cooling each storage chamber in the cooling chamber 110 is generated. The low-temperature cold air is diverted from the cooling fan 113 to the refrigerating room 104, the switching room 105, the ice making room 106, the vegetable room 107, and the freezing room 108 using an air passage or a damper, and cooled to the respective target temperature zones. In particular, the vegetable compartment 107 is adjusted so as to be 2 ° C. to 7 ° C. by ON / OFF operation such as cold air distribution and heating means 154, and generally does not have the internal temperature detection means.

  The vegetable compartment 107 cools the refrigerator compartment 104 and then discharges the air from the vegetable compartment outlet 124 formed in the middle of the refrigerator compartment return air passage 140 for circulating the air to the cooler 112 to the vegetable compartment 107. It flows to the outer periphery of the upper storage container 120 and the lower storage container 119 and cools indirectly, and then returns to the cooler 112 again from the vegetable room suction port 126.

  The heat insulating material 152 has a thinner wall thickness than the other portions of a part of the rear partition wall 111 that is in a relatively high humidity environment, and in particular, the back of the cooling pin 134 has the deepest recess 111b. The thickness is, for example, about 2 mm to 10 mm. In the refrigerator 100 according to the present embodiment, such a thickness is appropriate as a heat relaxation member positioned between the cooling pin 134 and the cooling means. Thereby, the rear surface partition wall 111 is formed with a concave portion 111a, and the electrostatic atomizer 131 having a shape in which the convex portion 134a of the cooling pin 134 protrudes into the deepest concave portion 111b on the rearmost surface of the concave portion 111a. It is attached.

  In the freezer compartment discharge air passage 141 on the back surface of the cooling pin 134, the cooler 112 is generated by the operation of the cooling system, and cool air of about −15 to −25 ° C. flows by the cooling fan 113 to conduct heat from the air passage surface. Then, the cooling pin 134 which is a heat transfer cooling member is cooled to about 0 to -10 ° C, for example. At this time, since the cooling pin 134 is a good heat conduction member, it is very easy to transmit cold heat, and the atomization electrode 135 that is the atomization tip portion is indirectly in the range of about 0 to −10 ° C. via the cooling pin 134. To be cooled.

  Here, since the temperature of the vegetable compartment 107 is 2 ° C. to 7 ° C. and is in a relatively high humidity state due to transpiration from vegetables, the atomizing electrode 135 that is the atomizing tip is at or below the dew point temperature. Water is generated on the atomizing electrode 135 including the tip, and water droplets adhere to it.

  A high voltage (for example, 4 to 10 kV) is applied between these electrodes by the voltage application unit 133 with a negative voltage applied to the atomizing electrode 135, which is the atomizing tip portion to which water droplets have adhered, and the counter electrode 136 as the positive voltage side. At this time, corona discharge occurs between the electrodes, and the water droplets at the tip of the atomizing electrode 135, which is the tip of the atomization, are refined by electrostatic energy, and further, the droplets are charged. Nano-level fine mist with invisible charges and accompanying ozone and OH radicals. The voltage applied between the electrodes is a very high voltage of 4 to 10 kV, but the discharge current value at that time is a few μA level, and the input is a very low input of 0.5 to 1.5 W. .

  Specifically, when the atomizing electrode 135 is set to the reference potential side (0 V) and the counter electrode 136 is set to the high voltage side (+7 kV), the condensed water adhering to the tip of the atomizing electrode 135 becomes the atomizing electrode 135 and the counter electrode 136. The air insulation layer in between is destroyed and discharge occurs by electrostatic force. At this time, the dew condensation water is charged and becomes fine particles. Further, since the counter electrode 136 is on the positive side, the charged fine mist is attracted, the droplets are further atomized, and the nano-level fine mist containing radicals and invisible charges of several nm level is attracted to the counter electrode 136. Due to the inertial force, fine mist is sprayed toward the storage room (vegetable room 107).

  When there is no water in the atomizing electrode 135, the discharge distance is increased, the air insulating layer cannot be destroyed, and the discharge phenomenon does not occur. As a result, no current flows between the atomizing electrode 135 and the counter electrode 136.

  Moreover, the atomization electrode 135 can be indirectly cooled by cooling the cooling pin 134 which is a heat transfer cooling member, without directly cooling the atomization electrode 135 which is an atomization front-end | tip part, and heat transfer cooling By making the cooling pin 134 as a member have a larger heat capacity than the atomizing electrode 135, it is possible to reduce the direct influence on the atomizing electrode 135 as the atomizing tip, and the atomizing electrode 135. In addition, by playing the role of cold storage, rapid temperature fluctuation of the atomizing electrode 135 can be suppressed, and stable mist spraying can be realized.

  Thus, the atomization electrode 135 can be indirectly cooled by cooling the cooling pin 134 that is the heat transfer cooling member without directly cooling the atomization electrode 135 that is the atomization tip. By making the cooling member have a larger heat capacity than that of the atomizing electrode 135, it is possible to mitigate the fact that the temperature change of the cooling means directly affects the atomizing electrode 135, and the atomization is the atomization tip. The electrode 135 can be cooled, the load fluctuation of the atomizing electrode 135 can be suppressed, and a mist spray with a stable spray amount can be realized.

  As described above, the counter electrode 136 is provided at a position facing the atomizing electrode 135, and the voltage application unit 133 that generates a high-voltage potential difference between the atomizing electrode 135 and the counter electrode 136 is provided. Can be stably constructed, the atomization phenomenon and the spraying direction are determined, the accuracy of the fine mist sprayed in the storage containers (lower storage container 119, upper storage container 120) can be further increased, and the accuracy of the atomization unit 139 is improved. The electrostatic atomizer 131 which can be improved and has high reliability can be provided.

  Furthermore, since the cooling pin 134 which is a heat transfer cooling member is cooled via the heat relaxation member (heat insulating material 152), in addition to the one that cools the atomizing electrode 135 indirectly with the cooling pin 134 as described above, It can cool indirectly with the double structure through the heat insulating material 152 which is a heat relaxation member, and can prevent the atomization electrode 135 which is an atomization front-end | tip part being cooled extremely.

  If the temperature of the atomizing electrode 135 is lowered by 1K, the water generation speed at the tip thereof increases by about 10%. However, when the atomization electrode 135 is extremely cooled, the condensation speed becomes abrupt, and the amount of condensation increases accordingly, and the increase in the input to the electrostatic atomizer 131 and the atomization due to the increase in the load of the atomization unit 139. There is a concern about freezing and atomization failure of the part 139, but it is possible to prevent problems due to such an increase in the load of the atomization part 139, to ensure an appropriate amount of condensation, and to achieve stable mist with low input. Spraying can be realized.

  In addition, the shape of the cooling pin 134 that is a heat transfer cooling member is preferably a cylindrical shape in consideration of assemblability. To be precise, a rectangular parallelepiped or a regular polygon may be used, but when the column is fitted into the recess 111a of the heat insulating material 152, the electrostatic atomizer 131 can be attached while being inclined. Conversely, in the case of a polygon, positioning is easier than a cylinder.

  Furthermore, by attaching the atomizing electrode 135 on the central axis of the cooling pin 134, when the cooling pin 134 is attached, the distance between the counter electrode 136 and the atomizing electrode 135 can be kept constant even when rotated. A discharge distance can be secured.

  Moreover, the atomization electrode 135 which is an atomization front-end | tip part is indirectly cooled by a double structure via a heat-transfer cooling member (cooling pin 134) and a heat relaxation member (heat insulating material 152), so that the cooling means Since it is possible to further alleviate that the temperature change directly affects the atomizing electrode 135, which is the atomizing tip, directly, the fluctuation in the load on the atomizing electrode 135 is suppressed, and a stable mist spray is realized. can do.

  The cooling of the cooling pin 134, which is a heat transfer cooling member, uses the cold air generated in the cooling chamber 110, and the cooling pin 134 is formed of a metal piece with good thermal conductivity. Necessary cooling can be performed only by heat conduction from the air passage (freezer compartment discharge air passage 141) through which the cool air generated in 112 flows.

  Further, at this time, the cooling pin 134 that is the heat transfer cooling member of the present embodiment has a shape having the convex portion 134a on the opposite side to the atomizing electrode 135 that is the atomizing tip, so the atomizing portion Since the end 134b on the convex portion 134a side is the closest to the cooling means in 139, among the cooling pins 134 that are heat transfer cooling members, from the end 134b side that is the farthest from the atomization electrode 135 that is the atomization tip. It is cooled by the cold air that is the cooling means.

  Since the cooling means can be configured with such a simple structure, it is possible to realize the atomizing section 139 with few failures and high reliability. Moreover, since the cooling pin 134 which is a heat transfer cooling member and the atomization electrode 135 which is an atomization front-end | tip part can be cooled using the cooling source of a refrigerating cycle, atomization can be performed with energy saving.

  When cooling by the cooling means in this way, by cooling from the end portion 134b which is the farthest part from the atomization electrode 135 which is the atomization tip portion of the cooling pin 134 which is a heat transfer cooling member, Cooling the large heat capacity of the cooling pin 134 and then cooling the atomizing electrode 135 by the cooling pin 134 further reduces the influence of the temperature change of the cooling means directly on the atomizing electrode 135. Thus, it is possible to realize a stable mist spray with a smaller fluctuation load.

  Further, the rear partition wall 111 to which the atomizing portion 139 is attached has a concave portion 111a in a part on the storage chamber (vegetable chamber 107) side, and the atomizing portion 139 having the convex portion 134a in the concave portion 111a is provided. By being inserted, the heat insulating material 152 constituting the rear partition wall 111 of the storage room (vegetable room 107) can be used as the heat relaxation member, and the thickness of the heat insulating material 152 can be increased without providing a special heat relaxation member. By adjusting, it is possible to provide a heat relaxation member that appropriately cools the atomization electrode 135 that is the atomization tip, and the atomization portion 139 can have a simpler configuration.

  Moreover, by inserting the atomization part 139 which has the convex part 134a which consists of the cooling pin 134 in the recessed part 111a, while being able to attach the atomization part 139 to a partition wall reliably without shakiness, the vegetable compartment which is a storage room The protrusion to the 107 side can be suppressed, and since it is difficult to touch a human hand, safety can be improved.

  Moreover, since the atomization part 139 does not protrude on the outer side across the back partition wall 111 of the vegetable compartment 107 as a storage room, the air passage resistance is not affected without affecting the air passage cross-sectional area of the freezing compartment discharge air passage 141. A decrease in the cooling amount due to the increase can be prevented.

  In addition, since there is a recess 111a in a part of the vegetable compartment 107 and the atomizing portion 139 is inserted there, there is no effect on the storage amount for storing fruits and vegetables, and the heat transfer cooling member The cooling pin 134 can be reliably cooled, and the wall thickness that can ensure heat insulation can be secured for the other portions, so that condensation in the outer case 137 can be prevented and reliability can be improved. it can.

  Further, the cooling pin 134 that is an electrode connecting member can secure a certain amount of heat capacity, and can relieve the response of heat conduction from the cooling air passage (freezer compartment discharge air passage 141). The temperature fluctuation of the atomizing electrode 135 can be suppressed, and it has a function as a cold storage member. Can be prevented.

  Further, by combining the cooling pin 134 with good heat conductivity and the heat insulating material 152, it is possible to conduct the cooling heat satisfactorily without loss, and further suppress the thermal resistance of the joint between the cooling pin 134 and the atomizing electrode 135. Therefore, temperature fluctuations of the atomizing electrode 135 and the cooling pin 134 follow well. Moreover, since humidity cannot penetrate | invade also about joining, thermal joining property is maintained over a long term.

  Further, since the storage room (vegetable room 107) is in a high humidity environment and the humidity may affect the cooling pin 134 which is a heat transfer cooling member, the cooling pin 134 is resistant to corrosion and rust. Since surface treatment and coating such as a high performance metal material or alumite treatment are performed, rust and the like are not generated, an increase in surface thermal resistance is suppressed, and stable heat conduction can be secured.

  Furthermore, since the surface of the atomizing electrode 135 that is the atomizing tip portion uses nickel plating, gold plating, or platinum plating, wear due to discharge at the tip of the atomizing electrode 135 is suppressed, and thereby the shape of the tip of the atomizing electrode 135 Therefore, it is possible to spray for a long period of time, and the shape of the droplet at the tip is also stabilized.

  When fine mist is sprayed from the atomizing electrode 135, an ion wind is generated. At this time, since highly humid air newly flows into the atomizing electrode 135 in the outer case 137 from the humidity supply port 138 provided in the outer case 137, it can be continuously sprayed.

  The fine mist generated in the atomizing electrode 135 is mainly sprayed into the lower storage container 119, but is very diffusible due to very small particles, and the fine mist reaches the upper storage container 120. Since the fine mist to be sprayed is generated by high-pressure discharge, it has a negative charge. On the other hand, among the vegetables which are fruits and vegetables, green vegetable leaves and fruits are also stored in the vegetable room 107, and these fruits and vegetables are more susceptible to wilt due to transpiration or transpiration during storage. Some vegetables and fruits stored in the vegetable compartment usually have a slight charge due to transpiration at the time of purchase return or transpiration during storage, and have a positive charge. Therefore, the atomized mist is easy to gather on the surface of vegetables, and this improves the freshness.

  In addition, nano-level fine mist adhering to the vegetable surface contains a lot of OH radicals and a small amount of ozone, etc., and is effective for sterilization, antibacterial, sterilization, etc. Encourages vegetables to increase nutrients such as vitamin C.

  Here, when there is no water in the atomizing electrode 135, the discharge distance is increased, the air insulating layer cannot be destroyed, and the discharge phenomenon does not occur. As a result, no current flows between the atomizing electrode 135 and the counter electrode 136. By detecting this phenomenon by the control means 146 of the refrigerator 100, the high voltage of the voltage application unit 133 can be turned ON / OFF.

  Further, in the present embodiment, the voltage application unit 133 is installed at a relatively low temperature and high humidity position in the storage room (vegetable room 107), and the voltage application unit 133 is moisture / waterproof by a potting material or a coating material. The circuit is protected by adopting the structure.

  In addition, when installing the voltage application part 133 outside a storage room, it is not necessary to perform the said response | compatibility.

  As described above, in the first embodiment, the storage room (vegetable room 107 or the like) that is insulated and the electrostatic atomizer 131 (atomization unit) that sprays mist into the storage room (vegetable room 107). 139), the atomizing unit 139 of the electrostatic atomizing device 131 is electrically connected to a voltage applying unit 133 that generates a high voltage, and an atomizing tip (atomizing electrode 135) to which mist is sprayed, A counter electrode 136 disposed at a position facing the atomizing electrode 135, a heat transfer cooling member (cooling pin 134) connected to the atomizing tip (the atomizing electrode 135), and the atomizing electrode 135 in the air Cooling means for cooling the heat transfer cooling member (cooling pin 134) in order to make the dew point below the dew point at which moisture is condensed, and the cooling means indirectly cools the heat transfer cooling member (cooling pin 134). The atomization tip (atomization electrode 135) is cooled below the dew point. By easily condensing moisture in the air on the atomization tip (atomization electrode 135) and spraying it as mist on the storage room (vegetable room 107), it is possible to easily remove excess water vapor in the storage room (vegetable room 107). The atomization tip (the atomization electrode 135) can be surely condensed, and the nano-level fine mist is generated by the high-voltage corona discharge between the counter electrode 136 and atomized and sprayed. Mist adheres uniformly to the surface of vegetables and other fruits and vegetables, suppresses transpiration from the fruits and vegetables, and improves freshness. Moreover, it can penetrate | invade in a structure | tissue from the cell space | gap, pores, etc. on the surface of fruit and vegetables, and a water | moisture content is supplied to the deflated cell, and it can return to a crispy state.

  In addition, since the electric field is discharged between the atomizing electrode 135 and the counter electrode 136, the direction of spraying is determined by the stable construction of the electric field, and fine mist is more accurately stored in the storage containers (lower storage container 119, upper storage container 120). Can be sprayed.

  In addition, the effects of deodorization, removal of harmful substances on the food surface, and antifouling can be enhanced by ozone and OH radicals generated simultaneously with the occurrence of mist.

  Moreover, the sprayed mist can be directly sprayed on the food in the storage container (lower storage container 119, upper storage container 120) of the vegetable compartment 107, and the mist is applied to the vegetable surface using the potential of the mist and vegetables. Since it can be made to adhere, the preservation efficiency is good.

  Further, defrosting hoses and purification filters for supplying water for mist spraying by causing the atomization electrode 135 to condense excessive water vapor in the storage room (vegetable room 107), attach water droplets, and spray mist. In addition, a water supply path directly connected to a water supply, a water storage tank, etc. are not required, and no water supply means such as a pump is used. ) Can be supplied.

  Since the fine mist can be stably supplied to the storage room (vegetable room 107) with such a simple structure, the possibility of failure of the refrigerator 100 can be greatly reduced, and the reliability is further improved. The quality of the refrigerator 100 can be improved above.

  Furthermore, since dew condensation water is used instead of tap water, there are no mineral components and impurities, so that it is possible to prevent deterioration when the water retention material is used and deterioration of water retention due to clogging.

  Furthermore, since it is not ultrasonic atomization by ultrasonic vibration, it is not necessary to consider noise and vibration such as resonance accompanying ultrasonic frequency transmission.

  In addition, since a water storage tank is unnecessary, there is no need to provide a water level sensor for the destruction of ultrasonic elements due to lack of water, which is necessary when using a water storage tank. An apparatus can be provided.

  Furthermore, since the portion in which the voltage application unit 133 is housed is also embedded in the rear partition wall 111 and cooled, the temperature rise of the substrate can be suppressed. Thereby, the temperature influence in the storage room (vegetable room 107) can be reduced.

  Moreover, in this Embodiment, the cooler 112 for cooling each store room 104,105,106,107,108, the cooling chamber 110 provided with the cooler 112, and a store room (vegetable room 107) are thermally insulated. The rear surface partition wall 111 is provided, and the electrostatic atomizer 131 is attached to the rear surface partition wall 111, thereby reducing the storage volume by installing it in the gap in the storage room (vegetable room 107). Moreover, since it cannot be easily touched by a person by being attached to the back surface, safety is improved.

  Moreover, in this Embodiment, the heat-transfer cooling member (cooling pin 134) connected to the atomization electrode 135 which is the atomization front-end | tip part of the electrostatic atomizer 131 is a metal piece with good heat conductivity. The cooling means for cooling the heat transfer cooling member (cooling pin 134) is a heat relaxation member by using heat conduction from the air passage (freezer compartment discharge air passage 141) through which the cool air generated by the cooler 112 flows. By adjusting the wall thickness of the heat insulating material 152 of the back partition wall 111, the temperature of the cooling pin 134 as the heat transfer cooling member and the atomization electrode 135 as the atomization tip can be easily set. Further, since there is no leakage of cold / cool air by sandwiching the heat insulating material 152 as a heat relaxation member, it is possible to prevent a decrease in reliability of the outer case 137 and the like such as frost formation and condensation.

  Moreover, in this Embodiment, the back surface partition wall 111 to which the electrostatic atomizer 131 (the atomization part 139) is attached has the recessed part 111a in a part by the side of the storage room (vegetable room 107), Since the heat transfer cooling member (cooling pin 134) connected to the atomization electrode 135 which is the atomization tip part of the electrostatic atomizer 131 is inserted there, the storage amount for storing fruits and vegetables and the like can be obtained. In addition to cooling the heat transfer cooling member (cooling pin 134) without fail, the outer case of the other portions of the electrostatic atomizer 131 can be secured with sufficient wall thickness to ensure heat insulation. Condensation in 137 can be prevented and reliability can be improved.

  In addition, since the electrostatic atomizer 131 in this Embodiment applies a high voltage between the atomization electrode 135 which is an atomization front-end | tip part, and the counter electrode 136, although ozone is also generated at the time of fine mist generation, By the ON / OFF operation of the electrostatic atomizer 131, the ozone concentration in the storage room (vegetable room 107) can be adjusted. By adjusting the ozone concentration appropriately, deterioration such as yellowing of vegetables due to excessive ozone can be prevented, and the sterilization and antibacterial action of the vegetable surface can be enhanced.

  In this embodiment, the atomization electrode 135 is set to the reference potential side (0 V), and a positive potential (+7 kV) is applied to the counter electrode 136 to generate a high-voltage potential difference between the two electrodes. May be the reference potential side (0 V), and a negative potential (−7 kV) may be applied to the atomizing electrode 135 to generate a high voltage potential difference between the two electrodes. In this case, since the counter electrode 135 close to the storage room (vegetable room 107) is on the reference potential side, an electric shock or the like does not occur even if the hand of the refrigerator user approaches the counter electrode 136. Further, when the atomizing electrode 135 is set to a negative potential of −7 kV, the counter electrode 136 may not be particularly provided if the storage chamber (vegetable chamber 107) side is set to the reference potential side.

  In this case, for example, a conductive storage container is provided in an insulated storage room (vegetable room 107), and the conductive storage container is electrically connected to a holding member (conductive) of the storage container, In addition, the holding member can be attached to and detached from the holding member, and the holding member is connected to the reference potential portion to be grounded (0 V).

  As a result, the atomizing unit 139 and the storage container and the holding member always maintain a potential difference, so that a stable electric field is formed, so that the atomization unit 139 can stably spray, and the entire storage container is at the reference potential. Thus, the sprayed mist can be diffused throughout the storage container. Further, charging to surrounding objects can be prevented.

  Thus, even if the counter electrode 136 is not particularly provided, a grounding holding member is provided on a part of the storage chamber (vegetable chamber 107) side, thereby generating a potential difference with the atomizing electrode 135 and performing mist spraying. It can be performed, and it can spray stably from an atomization part by comprising a stable electric field by simpler composition.

  Further, when the holding member is attached to the storage container side, since the entire storage container is at the reference potential, the sprayed mist can diffuse to the entire storage container. Further, charging to surrounding objects can be prevented.

  In the present embodiment, the air path for cooling the cooling pin 134 that is a heat transfer cooling member is the freezer compartment discharge air path 141, but the discharge air path of the ice making chamber 106 and the freezer compartment return air path A low-temperature air path such as Thereby, the installation place of the electrostatic atomizer 131 is expanded.

  In the present embodiment, the cooling means for cooling the cooling pins 134 that are heat transfer cooling members is cold air that is cooled by using the cooling source generated in the refrigeration cycle of the refrigerator 100. Heat transfer from a cooling pipe using cold air or cold temperature from a source may be used. Thereby, by adjusting the temperature of this cooling pipe, the cooling pin 134 which is a heat transfer cooling member can be cooled to an arbitrary temperature, and it becomes easy to perform temperature management when cooling the atomizing electrode 135.

  In the present embodiment, the water retention material is not provided around the atomization electrode 135 of the electrostatic atomizer 131, but a water retention material may be provided. Thereby, since the dew condensation water produced | generated in the vicinity of the atomization electrode 135 can be hold | maintained around the atomization electrode 135, it can supply to the atomization electrode 135 timely.

  In the present embodiment, the storage room in which the mist is sprayed by the electrostatic atomizer 131 (the atomizing unit 139) is the vegetable room 107, but other temperature zones such as the refrigerator room 104 and the switching room 105 are used. In this case, it can be deployed for various purposes.

(Embodiment 2)
The longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the refrigerator in Embodiment 2 of this invention right and left is as substantially the same as FIG. 1, and the key which shows the back surface of the vegetable compartment in the refrigerator of Embodiment 2 of this invention. The partial front view is the same as FIG. FIG. 4 is a cross-sectional view of the periphery of the electrostatic atomizer provided in the vegetable compartment in the refrigerator according to Embodiment 2 of the present invention, cut along line AA in FIG.

  In the figure, a rear partition wall 111 is used to isolate the rear partition wall surface 151 made of a resin such as ABS and the storage chamber from the air passage 156 and the cooling chamber 110, and to ensure heat insulation of the storage chamber. It is comprised with the heat insulating material 152 comprised by the polystyrene foam etc. Here, a recess is provided in a part of the wall surface of the rear partition wall 111 on the storage chamber side so as to be cooler than other parts, and the cooler 112 side where the cooling pin 134 is installed is further made a recess. The electrostatic atomizer 131 is installed in the penetration part 111c made by the above.

  At this time, a part of the cooling pin 134 which is a heat transfer cooling member penetrates the heat insulating material 152 and is exposed to a part of the low temperature air passage 156. Further, the low temperature air passage 156 has a convex portion, that is, a heat insulating material concave portion 155 in the vicinity of the back surface of the cooling pin 134, and the air passage is partially enlarged.

  About the refrigerator 100 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The heat insulating material 152 has a thinner wall thickness than other portions of a part of the rear partition wall 111 that is in a relatively high humidity environment, and in particular, the thickness of the heat insulating material 152 behind the cooling pin 134 is, for example, 2 mm to It is composed of about 10 mm. Thereby, the penetration partition 111c is formed in the back surface partition wall 111, and the electrostatic atomizer 131 is attached to this location.

  A part of the cooling pin 134 is exposed to the low temperature air passage 156 on the back surface. Cold air is generated by the cooler 112 by the operation of the cooling system, and cold air having a temperature lower than the vegetable room temperature flows by the cooling fan 113, and the cooling pin 134 is cooled to, for example, about 0 to -10 ° C. At this time, since the cooling pin 134 is a good heat conduction member, it is very easy to transmit cold heat, and the atomization electrode 135 as the atomization tip is also cooled to about 0 to −10 ° C.

  At this time, since the vicinity of the heat insulating material recess 155 of the low temperature air passage 156 is enlarged, the air passage resistance is lowered, so that the air volume of the cooling fan 113 is increased and the cooling system efficiency is improved.

  A high voltage (for example, 4 to 10 kV) is applied between the electrodes by the voltage application unit 133 with the negative voltage applied to the atomizing electrode 135 to which the water droplets are attached and the counter electrode 136 as the positive voltage side. At this time, corona discharge occurs between the electrodes, the water droplets at the tip of the atomizing electrode 135 are refined by electrostatic energy, and since the droplets are charged, they have an invisible charge of several nm level due to Rayleigh splitting. Nano-level fine mist and accompanying ozone and OH radicals are generated. The voltage applied between the electrodes is a very high voltage of 4 to 10 kV, but the discharge current value at that time is a few μA level, and the input is a very low input of 0.5 to 1.5 W. .

  The generated fine mist is sprayed into the lower storage container 119, but is very diffusible due to very small particles, and the fine mist reaches the upper storage container 120. Since the fine mist to be sprayed is generated by high-pressure discharge, it has a negative charge.

  On the other hand, among the vegetables which are fruits and vegetables, green vegetable leaves and fruits are also stored in the vegetable room 107, and these fruits and vegetables are more susceptible to wilt due to transpiration or transpiration during storage. Some vegetables and fruits stored in the vegetable compartment usually have a slight charge due to transpiration at the time of purchase return or transpiration during storage, and have a positive charge. Therefore, the atomized mist is easy to gather on the surface of vegetables, and this improves the freshness.

  In addition, nano-level fine mist adhering to the vegetable surface contains a lot of OH radicals and a small amount of ozone, etc., and is effective for sterilization, antibacterial, sterilization, etc. Encourages vegetables to increase nutrients such as vitamin C.

  As described above, in the present embodiment, the cool air is conveyed to the storage room or the cooler 112 on the back side of the rear partition wall 111 for thermally insulating the cooler 112 and the storage room (vegetable room 107). And at least one air passage (low temperature air passage 156) and a heat insulating material 152 that is insulated so as not to have a thermal effect with the storage room or other air passages, and the atomizing portion of the electrostatic atomizer 131 The cooling means (heat transfer cooling member) that cools and condenses the atomizing electrode 135 that is the atomizing tip portion of 139) is a metal piece with good thermal conductivity that is connected to the atomizing electrode 135 that is the atomizing tip portion. The cooling means 134 for cooling the cooling pin 134 can cool the atomization electrode 135 which is a reliable atomization tip by using the cold air generated by the cooler 112. And, in particular, new cooling means Because it does not have can be configured inexpensively and easily.

  Moreover, in this Embodiment, the back surface partition wall 111 to which the electrostatic atomizer 131 (the atomization part 139) is attached has a recessed part in the storage room (vegetable room 107) side, and heat insulation is carried out. A through-hole 111c is formed in the back surface partition wall 111 by the material recess 155, and a cooling pin 134, which is a heat transfer cooling member, is inserted into the through-hole 111c, whereby the electrostatic atomizer 131 is provided in the back surface partition wall 111. (Atomization part 139) is attached.

  And the cooling pin 134 which is a heat transfer cooling member is inserted in the penetration part 111c, and a part of the cooling pin 134 which is a heat transfer cooling member penetrates the heat insulating material 152 and is exposed to a part of the low temperature air passage 156. Therefore, the heat transfer cooling member (cooling pin 134) made of a metal piece can be reliably cooled, and the heat insulating material recess 155 is formed in the low temperature air passage 156, so that the air passage cross-sectional area of the low temperature air passage 156 is increased. Since the air path resistance is reduced or equalized by spreading, it is possible to prevent the cooling amount from being lowered. Moreover, the temperature of the atomization electrode 135 which is an atomization front-end | tip part can be easily adjusted by adjusting the exposure surface area to the low temperature wind path 156 of the cooling pin 134 which is a heat-transfer cooling member.

(Embodiment 3)
FIG. 5: is a principal part longitudinal cross-sectional view which shows the cross section when the peripheral part by the side of the door of the partition wall of the vegetable compartment upper part of the refrigerator in Embodiment 3 of this invention is cut right and left.

  As shown in the figure, the electrostatic atomizer 131 is incorporated in the first partition wall 123 that secures heat insulation in order to separate the temperature zones of the vegetable chamber 107 and the ice making chamber 106, and in particular, the atomizing section 139. As for the cooling pin 134 part, the heat insulating material has a concave shape.

  The refrigerator main body (heat-insulating box body 101) of the refrigerator 100 in the present embodiment has a plurality of storage chambers, and a fog is formed on the top side of the vegetable compartment 107 including the electrostatic atomizer 131 (the atomizing portion 139). A low-temperature storage room (ice-making room 106) maintained at a lower temperature than the vegetable room 107 including the conversion unit 139, and the electrostatic atomization device 131 (the atomization unit 139) is connected to the electrostatic atomization device 131 (of the It is attached to the first partition wall 123 on the top side of the vegetable compartment 107 provided with an atomizing section 139). The 1st partition wall 123 has the recessed part 123a in the vegetable compartment 107 side, and the cooling pin 134 which is a heat-transfer cooling member is inserted in the recessed part 123a.

  About the refrigerator 100 of this Embodiment comprised as mentioned above, the operation | movement * effect | action is demonstrated below.

  The thickness of the first partition wall 123 where the electrostatic atomizer 131 (the atomizing part 139) is installed is a heat transfer cooling member to which the atomizing electrode 135 which is the atomizing tip is fixed. The cooling capacity for cooling the cooling pin 134 is required, and the wall thickness of the portion where the electrostatic atomizer 131 is provided is configured to be thinner than other portions. Therefore, the cooling pin 134 can be cooled by heat conduction from the ice making chamber 106 which is relatively lower in temperature than the vegetable chamber 107, and the atomizing electrode 135 can be cooled. Here, if the tip temperature of the atomizing electrode 135 is set to be equal to or lower than the dew point, water vapor in the vicinity of the atomizing electrode 135 is condensed on the atomizing electrode 135, and water droplets are reliably generated.

  Although not shown here, the internal temperature detector, the internal humidity detector, the atomization electrode temperature and humidity detector, etc. are installed in the storage, so that the changes in the internal environment can be strictly controlled by a predetermined calculation. The dew point can be determined accordingly.

  In this state, the atomizing electrode 135 is set to the negative voltage side, the counter electrode 136 is set to the positive voltage side, and a high voltage (for example, 7.5 kV) is applied between the electrodes by the voltage applying unit 133. At this time, the air insulating layer is destroyed between the electrodes, corona discharge occurs, the water of the atomizing electrode 135 is atomized from the tip of the electrode, and nano-level fine mist having a charge of less than 1 μm that cannot be visually observed, and the accompanying ozone And OH radicals are generated.

  The generated fine mist is sprayed into the vegetable containers (lower storage container 119, upper storage container 120). The fine mist sprayed from the electrostatic atomizer 131 is negatively charged. On the other hand, vegetables which are fruits and vegetables are stored in the vegetable room 107, and green rape leaves, fruits and the like are also stored therein. These fruits and vegetables are usually stored in a slightly deflated state due to transpiration at the time of purchase return or transpiration during storage. These fruits and vegetables are normally charged with a positive charge, and the sprayed fine mist with a negative charge tends to collect on the vegetable surface.

  Therefore, the sprayed fine mist makes the inside of the vegetable compartment 107 highly humid and at the same time adheres to the surface of the fruits and vegetables, suppresses the transpiration from the fruits and vegetables, and improves the freshness. In addition, it penetrates into the tissues through the gaps between the cells of vegetables and fruits, the water evaporates, the water is supplied again into the deflated cells, the deflation is eliminated by the swelling pressure of the cells, and it returns to a crispy state .

  Moreover, the generated fine mist holds ozone, OH radicals, etc., and these hold strong oxidizing power. Therefore, the generated fine mist can deodorize the inside of the vegetable compartment 107 and antibacterial and sterilize the vegetable surface. At the same time, harmful substances such as agricultural chemicals and wax adhering to the vegetable surface can be oxidatively decomposed and removed.

  Currently, refrigerants in the refrigeration cycle that use isobutane, which is a flammable refrigerant with a low global warming potential, are mainly used from the viewpoint of global environmental conservation.

  This isobutane, which is a hydrocarbon, has a specific gravity approximately twice that at normal temperature and atmospheric pressure compared with air (at 2.04 and 300K).

  If isobutane, which is a flammable refrigerant, leaks from the refrigeration system when the compressor 109 is stopped, it leaks downward because it is heavier than air. At this time, the refrigerant may leak from the rear partition wall 111 into the cabinet. In particular, when the refrigerant leaks from the cooler 112 having a large amount of refrigerant, the amount of leakage may increase. However, the vegetable compartment 107 including the electrostatic atomizer 131 is installed above the cooler 112. Therefore, even if it leaks, it does not leak into the vegetable compartment 107.

  Even if the combustible refrigerant (isobutane) leaks from the cooler 112 to the vegetable compartment 107, the combustible refrigerant (isobutane) stays in the lower part of the storage compartment (vegetable compartment 107) because it is heavier than air. Therefore, since the electrostatic atomizer 131 is installed on the top surface of the storage room (vegetable room 107), the vicinity of the electrostatic atomizer 131 is extremely low in combustible concentration.

  As described above, in the present embodiment, the refrigerator main body (the heat insulating box body 101) has a plurality of storage rooms, and the top side of the vegetable compartment 107 which is a storage room provided with the atomizing section 139 is atomized. The ice making chamber 106 which is a low temperature storage room kept at a lower temperature than the vegetable room 107 which is a storage room provided with the part 139 is provided, and the atomization part 139 is a first partition wall 123 on the top side of the vegetable room 107. It was attached to.

  Accordingly, when there is a freezing temperature zone storage room such as a freezing room or an ice making room above the storage room (vegetable room 107) provided with the atomizing section 139 (in this embodiment, the ice making room 106), By installing the atomizing part 139 on the first partition wall 123 on the top surface of the partition, a cooling pin that is a heat transfer cooling member of the atomizing part 139 with the cold air of the storage room (ice making room 106) above the vegetable room 107 Since the atomization electrode 135 which is the atomization tip is cooled and condensed by cooling 134, a special cooling device is unnecessary, and the atomization unit can be provided with a simple configuration. An atomization unit with few failures and high reliability can be realized.

  The refrigerator 100 according to the present embodiment has a partition wall (first partition wall 123) for partitioning the storage room (vegetable room 107) and a storage room (vegetables) on the top side of the storage room (vegetable room 107). A cold storage room (ice making room 106) having a temperature lower than that of the room 107) is provided, and the electrostatic atomizer 131 is attached to the first partition wall 123 on the top surface of the vegetable room 107, so that it is like a freezing room or an ice making room. When the storage room of the freezing temperature zone is at the upper part of the storage room (vegetable room 107) provided with the electrostatic atomizer 131, it is installed on the top partition wall (first partition wall 123) that partitions them, Since the atomization electrode 135 of the electrostatic atomizer 131 can be cooled and condensed through the cooling pin 134 which is a heat transfer cooling member at the cooling source, a special cooling device is unnecessary, and the top surface Storage container (lower storage container 11 , Upper storage container 120) likely to diffuse throughout, also can be safety improved so hard touches on a human hand.

  Moreover, the atomization part 139 of this Embodiment produces | generates mist by an electrostatic atomization system, and breaks up a water droplet using electric energy, such as a high voltage, and generates fine mist by subdividing. . The generated mist has a charge, so by giving the mist a charge opposite to the object you want to attach, such as vegetables or fruits, for example, a mist with a negative charge is added to a vegetable with a positive charge. Spraying improves adhesion to vegetables and fruits, so that the mist adheres more uniformly to the vegetable surface and improves the mist adhesion rate compared to non-charged mists. I can do it. In addition, the sprayed fine mist can be directly sprayed on the food in the vegetable container, and the fine mist can be attached to the vegetable surface using the potential of the fine mist and the vegetable, so the freshness is efficiently maintained. Can be improved.

  Furthermore, the makeup water of this embodiment uses condensed water instead of tap water supplied from the outside. Therefore, there is no mineral component or impurity, and deterioration of the water retention due to clogging of the tip of the atomizing electrode or clogging can be prevented.

  Furthermore, since the mist of the present embodiment contains radicals, agricultural chemicals and wax adhering to the vegetable surface can be decomposed and removed with an extremely small amount of water, so that water can be saved and input can be reduced.

  In addition, since the electrostatic atomizer 131 is disposed above the evaporator (cooler 112), the refrigeration cycle is configured using a combustible refrigerant such as isobutane or propane, and the refrigerant Even if the spilled, it is safe because the vegetable compartment 107 is not filled with refrigerant because it is heavier than air.

  Moreover, since the atomization part 139 of the electrostatic atomizer 131 is installed above the storage room (vegetable room 107) also in the vegetable room 107, even if a refrigerant | coolant leaks, a storage room (vegetable room 107) Because it stays in the lower part of the tube, it will not ignite.

  In addition, since there is no part which faces the refrigerant | coolant piping etc. directly in the storage room (vegetable room 107), a refrigerant | coolant does not leak. Therefore, the combustible refrigerant is not ignited.

(Embodiment 4)
The longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the refrigerator in Embodiment 4 of this invention in right and left is as substantially the same as FIG. 1, and the key which shows the back surface of the vegetable compartment in the refrigerator of Embodiment 4 of this invention. The partial front view is the same as FIG. FIG. 6 is a cross-sectional view of the electrostatic atomizer provided in the vegetable compartment in the refrigerator according to Embodiment 4 of the present invention, taken along the line AA in FIG.

  In the present embodiment, detailed description will be made only on portions that are different from the configuration described in detail in the first to third embodiments, and the same part or the same technical idea as the configuration described in detail in the first to third embodiments. The description of the applicable parts is omitted.

  In the figure, the rear partition wall 111 is provided with cold air that cools the rear partition wall surface 151 and the storage chamber (freezer compartment 108), which are partitions that divide the storage chamber (vegetable compartment 107) made of a resin such as ABS. The air passage 141 and the heat insulating material 152 for heat-insulating the storage chamber are provided. In addition, a partition plate 161 for separating the freezer compartment discharge air passage 141 and the cooling chamber 110 is provided, and between the rear partition wall surface 151 on the vegetable compartment 107 side and the freezer compartment discharge air passage 141, Consists of heat insulating material 152 made of foamed polystyrene for ensuring heat insulation, etc. In addition, on the rear partition wall surface 151, the temperature of the storage room (vegetable room 107) is adjusted, or condensation on the surface is prevented Therefore, a heating means 154 such as a heater is provided between the rear partition wall surface 151 and the heat insulating material 152.

  Here, the recessed part 111a is provided in a part of wall surface by the side of the storage chamber of the back surface partition wall 111, and the electrostatic atomizer 131 is embed | buried in the location.

  The electrostatic atomizer 131 cools the atomization electrode 135, which is an atomization tip provided in the atomization unit 139, to a dew point temperature or less by a cooling unit, thereby removing moisture in the air around the atomization unit 139. Condensed water generated by condensation on the atomizing electrode 135 is sprayed as mist.

  When performing this dew condensation, in the present embodiment, the low temperature cold air flowing through the freezer discharge air passage 141 is used as a cooling means, and the atomization electrode 135 as the atomization tip is not directly cooled, but the atomization electrode The atomizing electrode 135 is cooled via a cooling pin 134 which is a heat transfer cooling member having a heat capacity larger than 135.

  The heat insulating material 152 on the back side of the cooling pin 134 as the heat transfer cooling member, that is, on the cooling chamber 110 side, cools the cooling pin 134 as the heat transfer cooling member (as shown in FIG. 3 described in the first embodiment). However, if an extremely thin part is provided in the molding of foamed polystyrene, etc., the rigidity of the thin part will decrease, and problems such as insufficient strength, cracks due to molding defects, and perforations may occur. In some cases, there is a concern about deterioration of quality.

  Therefore, in the present embodiment, the protrusion 162 is provided on the heat insulating material 152 in the vicinity of the back surface of the cooling pin 134 to increase the rigidity around the cooling pin 134 as compared with the flat surface, and the wall thickness of the heat insulating material 152 is increased. To ensure a shape with increased rigidity. In addition, the cooling pin 134 can be cooled from both the side surface and the back surface side by the protrusion 162.

  Furthermore, in order to suppress an increase in air path resistance, the outer peripheral surface of the protrusion 162 is formed as a conical slope that becomes thinner toward the tip.

  About the refrigerator 100 of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Since the cooling pin 134 that is a heat transfer cooling member is cooled via the heat insulating material 152 that is a heat relaxation member, the atomization electrode 135 that is the atomization tip is indirectly cooled by the cooling pin 134, It can cool indirectly with the double structure through the heat insulating material 152 which is a heat relaxation member, and can prevent the atomization electrode 135 which is an atomization front-end | tip part being cooled extremely. When the atomization electrode 135 that is the atomization tip is extremely cooled, the amount of condensation on the atomization unit 139 increases accordingly, and the input to the electrostatic atomizer 131 due to an increase in the load during atomization. There is a concern about the poor atomization due to the increase in the temperature and the freezing of the atomizing unit 139, etc., but it is possible to prevent such a malfunction due to the increase in the load of the atomizing unit 139, and to secure an appropriate amount of condensation. Stable mist spraying can be achieved with input.

  Moreover, the cooling means is obtained by indirectly cooling the atomization electrode 135 which is the atomization tip portion with a double structure through the heat transfer cooling member (cooling pin 134) and the heat relaxation member (heat insulating material 152). Since it is possible to further alleviate that the temperature change of (low temperature cold air flowing through the freezing chamber discharge air passage 141) directly affects the atomization electrode 135 which is the atomization tip, the atomization tip It is possible to suppress a load fluctuation of an atomizing electrode 135 and realize a mist spray with a stable spray amount.

  In addition, the cooling pins 134 that are heat transfer cooling members are cooled by using the cool air generated in the cooling chamber 110, and the cooling pins 134 are formed of metal pieces having good thermal conductivity. Necessary cooling can be performed only by heat conduction from the air passage through which the cool air generated in 112 flows.

  At this time, the cooling pin 134 that is the heat transfer cooling member of the present embodiment has a shape having the convex portion 134a on the opposite side to the atomizing electrode 135 that is the atomizing tip, and thus the atomizing portion 139. Among them, the end 134b on the convex portion 134a side is closest to the cooling means, so that the cooling pin 134 is cooled by the cold air that is the cooling means from the end 134b farthest from the atomizing electrode 135.

  In this way, in the portion exposed to the vegetable compartment 107, only the atomization electrode 135, which is the atomization tip, is cooled by heat conduction, so that the atomization electrode 135 can generate dew condensation and mist, and the other portions are insulated. By ensuring the property, for example, condensation of the outer case 137 is prevented.

  Further, since there is no communicating portion between the electrostatic atomizer 131 and the freezer discharge air passage 141, low temperature cold air does not leak into the storage room, so the storage room (vegetable room 107) and its surroundings Parts do not cause condensation or low temperature abnormalities.

  Since the cooling means can be configured with such a simple structure, it is possible to realize the atomizing section 139 with few failures and high reliability. Moreover, since the cooling pin 134 which is a heat transfer cooling member and the atomization electrode 135 which is an atomization front-end | tip part can be cooled using the cooling source of a refrigerating cycle, atomization can be performed with energy saving.

  Further, the rear partition wall 111 to which the atomizing portion 139 is attached has a concave portion 111a in a part on the storage chamber (vegetable chamber 107) side, and the atomizing portion 139 having the convex portion 134a in the concave portion 111a is provided. By being inserted, the heat insulating material 152 constituting the rear partition wall 111 of the storage room (vegetable room 107) can be used as a heat relaxation member, and the thickness of the heat insulating material 152 can be reduced without providing a special heat relaxation member. By adjusting, it is possible to provide a heat relaxation member that appropriately cools the atomization electrode 135 that is the atomization tip, and the atomization portion 139 can have a simpler configuration.

  Further, in the freezer compartment discharge air passage 141 provided on the back surface side of the rear partition wall 111, although the conical protrusion 162 is formed of the heat insulating material 152, it does not become a resistance against the flow direction of the cold air. Thus, since the cooling capability is prevented from being deteriorated and the heat conduction area is increased for the cooling pin 134, the cooling efficiency for the cooling pin 134 is improved.

  Thus, in this Embodiment, by providing the protrusion 162 which protrudes to the freezer compartment discharge air path 141 in the heat insulating material 152 of the back surface partition wall 111 near the back surface of the cooling pin 134 which is a heat transfer cooling member. Compared to the case where the freezing chamber discharge air passage 141 is not provided with the protrusion 162 and the surface of the freezing chamber discharge air passage 141 on the side of the cooling pin 134 is flat, the heat insulating material Even when the wall thickness of 152 is secured and the rigidity is further increased, the cooling pin 134 as a heat transfer cooling member can be cooled from both the side surface and the back surface side, so that the surface area for heat conduction is increased. Therefore, the rigidity around the cooling pins 134 can be increased without reducing the cooling efficiency of the cooling pins 134 that are heat transfer cooling members.

  In addition, by making the outer peripheral surface of the protrusion 162 a conical slope that becomes narrower toward the tip, the cold air flows so as to lick the outer periphery of the protrusion 162 that is a curved surface with respect to the flow direction of the cold air. While suppressing an increase in resistance, the cooling pin 134 is uniformly cooled from the outer periphery of the side wall, so that the cooling pin 134 that is a heat transfer cooling member can be evenly cooled, and the cooling pin 134 that is a heat transfer cooling member is interposed. Thus, the atomization electrode 135 which is the atomization tip can be efficiently cooled.

  Moreover, since the cooling pin 134 which is an electrode connection member (heat transfer cooling member) can secure a certain amount of heat capacity, the response of heat conduction from the cooling air passage (freezer compartment discharge air passage 141) can be reduced. Therefore, the temperature fluctuation of the atomizing electrode 135 which is the atomizing tip part can be suppressed, and it also has a function of cold storage, so it is possible to secure the time for the condensation generation of the atomizing electrode 135 which is the atomizing tip part. In addition, freezing can be prevented.

  Moreover, since the atomizing device is the electrostatic atomizing device 131, the generated fine mist is very diffusive because it is very small particles, and reaches the entire vegetable compartment 107 to be sprayed. Since the fine mist to be sprayed is generated by high-pressure discharge and has a negative charge, the vegetable compartment 107 contains vegetables, which are fruits and vegetables having a positive charge, so that the atomized mist Easily adheres to the surface of the vegetable, thereby increasing the humidity of the vegetable surface and allowing moisture to permeate into the cells from the surface, thus improving the freshness.

  In addition, nano-level fine mist adhering to the vegetable surface contains a lot of OH radicals and a small amount of ozone, etc., and is effective for sterilization, antibacterial, sterilization, etc. Encourages vegetables to increase nutrients such as vitamin C.

  Here, when there is no water in the atomization electrode 135 which is an atomization front-end | tip part, the discharge distance is separated, the insulating layer of air cannot be destroyed, and a discharge phenomenon does not occur. As a result, no current flows between the atomizing electrode 135 and the counter electrode 136. By detecting this phenomenon with the control means 146 of the refrigerator 100, the high voltage of the voltage application unit 133 can be turned on / off, so that the heat load on the inside of the cabinet can be suppressed and energy can be saved.

  As described above, in the fourth embodiment, the conical protrusion 162 that protrudes into the freezer compartment discharge air passage 141 is provided for the heat insulating material 152 on the back surface of the cooling pin 134 that is the convex portion 134 a of the atomizing portion 139. Thus, it is possible to facilitate the molding of the heat insulating material 152 by improving the rigidity of the heat insulating wall 152, and to minimize the flow resistance of the freezing chamber discharge air passage 141, thereby reducing the heat transfer cooling member. It is possible to secure the cooling capacity to the cooling pin 134.

  Moreover, in this Embodiment, since the wall thickness of the heat insulating material 152 is ensured reliably, there is no leakage of cold / cold air between the vegetable compartment 107 and the freezer compartment discharge air path 141 of another division adjacent, so the outer case 137 It is possible to prevent a decrease in reliability such as frost formation and condensation.

  In the present embodiment, the air passage as a cooling means for cooling the cooling pin 134 that is a heat transfer cooling member is the freezer compartment discharge air passage 141, but the discharge air passage of the ice making chamber 106 or the freezer A low temperature air passage such as the return air passage of the chamber 108 may be used. Moreover, you may use not only the air path but the cool air in the storage room | chamber temperature lower than the vegetable compartment 107. FIG. Thereby, the installation place of the electrostatic atomizer 131 is expanded.

  In the present embodiment, the cooling means for cooling the cooling pin 134 that is a heat transfer cooling member is cold air that is cooled by using the cooling source generated in the refrigeration cycle of the refrigerator. The heat transfer from the cooling pipe using cold air or cold temperature may be used. Thereby, by adjusting the temperature of the cooling pipe, the cooling pin 134 that is a heat transfer cooling member can be cooled to an arbitrary temperature, and the temperature at which the atomization electrode 135 that is the atomization tip is cooled. It becomes easier to manage.

  In this embodiment, the cooling means for cooling the cooling pin 134 that is a heat transfer cooling member is low-temperature cold air. However, a Peltier element using the Peltier effect may be used as an auxiliary part. With this supply voltage, the temperature at the tip of the atomizing electrode 135 can be controlled at an extremely fine temperature.

  In the present embodiment, no cushioning material is used between the outer case 137 of the electrostatic atomizer 131 and the recess 111a of the heat insulating material 152. In order to prevent this, it is more preferable that a cushioning material such as urethane foam is formed in the outer case 137 of the electrostatic atomizer 131 or the concave portion 111a of the heat insulating material 152. This prevents the humidity from flowing into the cooling pin 134, and the heat insulating material. It is possible to prevent condensation on 152.

  In this embodiment, the water retention material is not provided around the atomization electrode 135 that is the atomization tip, but a water retention material may be provided. Thereby, since the dew condensation water produced | generated in the vicinity of the atomization electrode 135 can be hold | maintained around the atomization electrode 135, it can supply to the atomization electrode 135 timely. Furthermore, high humidity can be maintained by providing a water retaining material or sealing means in the vegetable compartment 107.

  In the present embodiment, the storage room in which the mist is sprayed by the electrostatic atomizer 131 (the atomizing unit 139) is the vegetable room 107, but other temperature zones such as the refrigerator room 104 and the switching room 105 are used. In this case, it can be deployed for various purposes.

(Embodiment 5)
The longitudinal cross-sectional view which shows the cross section at the time of cutting the refrigerator in Embodiment 5 of this invention into right and left is as substantially the same as FIG. 1, and the key which shows the back surface of the vegetable compartment in the refrigerator of Embodiment 5 of this invention The partial front view is the same as FIG. FIG. 7 is a cross-sectional view of the periphery of the electrostatic atomizer provided in the vegetable compartment in the refrigerator according to Embodiment 5 of the present invention, cut along line AA in FIG.

  In the present embodiment, detailed description will be made only on portions different from the configurations described in detail in the first to fourth embodiments, and the same portions or the same technical idea as the configurations described in detail in the first to fourth embodiments will be described. The description of the applicable parts is omitted.

  In the figure, a rear partition wall 111 is a foam partition wall surface 151 made of a resin such as ABS, and a polystyrene foam to ensure heat insulation between the rear partition wall surface 151 and the freezer compartment discharge air passage 141. It is comprised with the heat insulating material 152 comprised by these. Moreover, the partition plate 161 for isolating the freezer compartment discharge air path 141 and the cooling chamber 110 is provided, and the rear partition wall surface 151 on the vegetable compartment 107 side has a temperature of the storage compartment (vegetable compartment 107). A heating means 154 such as a heater is installed between the rear partition wall surface 151 and the heat insulating material 152 in order to adjust or prevent condensation on the surface.

  Here, the penetration part 165 is provided in a part of wall surface inside the storage room (vegetable room 107) of the back surface partition wall 111, and the electrostatic atomizer 131 is installed in the location.

  The electrostatic atomizer 131 mists the moisture in the air around the atomization unit 139 by cooling the atomization electrode 135 which is the atomization tip provided in the atomization unit 139 to the dew point temperature or less by the cooling means. Condensed water generated by dew condensation on the atomizing electrode 135 as the atomizing tip is sprayed as mist.

  When performing this dew condensation, in this embodiment, the low temperature cold air flowing through the freezer discharge air passage 141 is used as a cooling means, and the atomization electrode 135 which is the atomization tip is not directly cooled but atomized. The atomization electrode 135 that is the atomization tip is cooled via a cooling pin 134 that is a heat transfer cooling member having a larger heat capacity than the electrode 135.

  The electrostatic atomizer 131 mainly includes an atomizing unit 139, a voltage applying unit 133, and an outer case 137. A spray port 132 and a humidity supply port 138 are configured in part of the outer case 137. The atomizing part 139 is provided with an atomizing electrode 135 that is an atomizing tip, and the atomizing electrode 135 is fixedly connected to a cooling pin 134 that is a heat transfer cooling member made of a good heat conducting member such as aluminum or stainless steel. In addition, it is electrically connected including one end wired from the voltage application unit 133.

  The cooling pin 134 which is this electrode connecting member (heat transfer cooling member) has a large heat capacity of 50 times or more, preferably 100 times or more, compared to the atomizing electrode 135 which is the atomizing tip. A high heat conductive member such as aluminum or copper is preferable. In order to efficiently transfer cold heat from one end of the cooling pin 134 to the other end, it is desirable that the periphery is covered with a heat insulating material 152.

  When the through-hole 165 provided with the cooling pin 134 as the heat transfer cooling member is provided with a through-hole as in the present embodiment in the molding of foamed polystyrene or the like, the rigidity of the heat insulating wall is lowered, and the strength is insufficient or the molding is poor. There is a high possibility that defects such as cracks and perforations will occur, and there is a concern about quality deterioration.

  Therefore, in the present embodiment, the protrusion 162 protruding to the freezer compartment discharge air passage 141 is provided on the heat insulating material 152 of the rear partition wall 111 in the vicinity of the through-hole 165 provided with the cooling pin 134 that is a heat transfer cooling member. As a result, compared to the case where the freezing chamber discharge air passage 141 is not provided with the protrusion 162 and the surface on the cooling pin 134 side in the freezer discharge air passage 141 is flat, the rigidity around the penetration portion 165 is increased. The wall thickness of the heat insulating material 152 was secured, and the shape was further increased in rigidity. In addition, the cooling pin 134 can be cooled from both the side surface and the back surface side by the protrusion 162.

  Furthermore, in order to suppress an increase in air path resistance, the outer peripheral surface of the protrusion 162 is formed as a conical slope that becomes thinner toward the tip.

  At this time, if the cooling pin 134 is installed directly in the air passage (freezer compartment discharge air passage 141), there is a possibility of excessive cooling and excessive condensation of the atomizing electrode 135 or freezing.

  Therefore, a hole (through portion 165) is provided in the heat insulating material in the vicinity of the back surface of the cooling pin 134, and the cooling pin 134 is inserted there, and a material such as PS or PP, which is a heat insulating and highly waterproof material around it. By installing a cooling pin cover 166 formed of resin, heat insulation is ensured.

  Further, the cooling pin cover 166 may be an insulating tape having heat insulating properties.

  Although not shown in the figure, if a cushioning material is provided in the hole (through portion 165) and the cooling pin cover 166 to ensure sealing performance, the cool air from the freezer compartment discharge air passage 141 may further enter the periphery of the cooling pin 134. Can be prevented more effectively.

  Further, although not shown in the figure, the cold air is more effectively blocked by applying a tape or the like to the opening 167 of the penetrating portion 165.

  About the refrigerator 100 of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  Since the cooling pin 134 which is a heat transfer cooling member is cooled via the cooling pin cover 166, the cooling pin 134 is used to indirectly cool the atomizing electrode 135 which is an atomizing tip, and further, a heat relaxation member. The cooling pin cover 166 can be indirectly cooled with a double structure, and the atomization electrode 135 as the atomization tip can be prevented from being extremely cooled. When the atomization electrode 135 which is the atomization tip is extremely cooled, the amount of condensation is increased accordingly, and an increase in the input to the electrostatic atomizer 131 due to an increase in the load of the atomization unit 139 and the atomization unit 139. There is a concern about poor atomization due to freezing, etc., but it is possible to prevent such a malfunction due to an increase in the load of the atomizing section 139, to secure an appropriate amount of condensation, and to stabilize mist spray with low input. Can be realized.

  Moreover, the atomization electrode 135 which is an atomization front-end | tip part is indirectly cooled with a double structure through the cooling pin 134 which is a heat-transfer cooling member, and the heat relaxation member (cooling pin cover 166, heat insulating material 152). Thus, since it is possible to further alleviate that the temperature change of the cooling means directly affects the atomization electrode 135 which is the atomization tip, the load fluctuation of the atomization electrode 135 is suppressed and stabilized. A spray amount of mist spray can be realized.

  In addition, the cooling pins 134 that are heat transfer cooling members are cooled by using the cool air generated in the cooling chamber 110, and the cooling pins 134 are formed of metal pieces having good thermal conductivity. Necessary cooling can be performed only by heat conduction from the air passage (freezer compartment discharge air passage 141) through which the cool air generated in 112 flows.

  At this time, the cooling pin 134 which is the heat transfer cooling member of the present embodiment has a shape having the convex portion 134a on the opposite side to the atomizing electrode, and therefore the convex portion 134a in the atomizing portion 139. Since the end portion 134b on the side is closest to the cooling means, the cooling pin 134 is cooled by the cold air that is the cooling means from the end portion 134b that is farthest from the atomizing electrode 135 that is the atomizing tip portion.

  Thus, in the present embodiment, the cooling pin is provided with the protrusion 162 protruding to the freezer compartment discharge air passage 141 in the heat insulating material 152 in the vicinity of the through portion 165, so that the cooling pin Since 134 can be cooled from both the side surface and the back surface side, the surface area for heat conduction can be increased, and the cooling pin 134 can be cooled without reducing the cooling efficiency of the cooling pin 134 that is a heat transfer cooling member. Peripheral rigidity can be increased.

  In addition, by making the outer peripheral surface of the protrusion 162 a conical slope that becomes narrower toward the tip, the cold air flows so as to lick the outer periphery of the protrusion 162 that is a curved surface with respect to the flow direction of the cold air. In addition to suppressing an increase in resistance, the cooling pin 134, which is a heat transfer cooling member, is uniformly cooled from the outer periphery of the side wall, so that the cooling pin 134 can be cooled evenly, and at the atomizing tip via the cooling pin 134 A certain atomization electrode 135 can be efficiently cooled.

  Further, since only a part of the back surface of the cooling pin 134 of the heat insulating material 152 is provided with a through-hole 165 which is a through-hole, and a thin-walled portion is not configured, it is possible to easily mold polystyrene foam, and there are problems such as breakage during assembly. There is no.

  Further, in the configuration of the present embodiment, the portion of the cooling pin cover 166 in contact with the cooling means (low temperature cold air) on the back side becomes the heat relaxation member, so the heat relaxation state of the heat relaxation member is the state of the cooling pin cover 166. Since it can be adjusted by changing the thickness of the portion in contact with the cold air, the cooling state of the cooling pin 134 which is a heat transfer cooling member can be easily changed, for example, even when applied to a refrigerator with various storage capacities This can be dealt with by changing the thickness of the cooling pin cover 166 according to each cooling load.

  Further, there is no gap between the cooling pin cover 166 and the through portion 165, and the opening of the through portion 165 blocks the intrusion of the cold air from the adjacent section by tape or the like, so that the low temperature cold air leaks into the cabinet. Since it does not come, the storage room (vegetable room 107) and its peripheral parts do not cause dew condensation or low temperature abnormality.

  In this way, when cooling by the cooling means, the cooling pin 134 is made larger by cooling from the end 134b side that is the farthest part from the atomizing electrode 135 of the cooling pin 134 that is a heat transfer cooling member. After the heat capacity is cooled, the atomization electrode 135 as the atomization tip is cooled by the cooling pin 134 as the heat transfer cooling member, so that the temperature change of the cooling means is the atomization electrode 135 as the atomization tip. It is possible to further reduce the direct large influence on the mist, and to realize a stable mist spray with a smaller fluctuation load.

  The generated fine mist is sprayed into the vegetable compartment 107, but is very diffusible because it is very small fine particles, and the fine mist reaches the entire vegetable compartment 107.

  Moreover, since the atomizing device is the electrostatic atomizing device 131, the generated fine mist is very diffusive because it is very small particles, and reaches the entire vegetable compartment 107 to be sprayed. Since the fine mist to be sprayed is generated by high-pressure discharge and has a negative charge, the vegetable compartment 107 contains vegetables, which are fruits and vegetables having a positive charge, so that the atomized mist Are easy to gather on the surface of vegetables, which improves freshness.

  In addition, nano-level fine mist adhering to the vegetable surface contains a lot of OH radicals and a small amount of ozone, etc., and is effective for sterilization, antibacterial, sterilization, etc. Encourages vegetables to increase nutrients such as vitamin C.

  Further, as in the present embodiment, when the condensed water obtained by condensing moisture in the air by cooling the atomizing electrode 135 which is the atomizing tip is used for the mist spray, water is supplied to the atomizing electrode 135. When there is no discharge distance, the air insulation layer cannot be destroyed and the discharge phenomenon does not occur. As a result, no current flows between the atomizing electrode 135 and the counter electrode 136, but the high voltage of the voltage application unit 133 can be turned on / off by detecting this phenomenon with the control means 146 of the refrigerator 100. Can reduce heat load and save energy.

  As described above, in the fifth embodiment, with respect to the configuration of the cooling pin 134 that is the convex portion 134a of the atomizing portion 139, the heat insulating material 152 is provided with the through portion 165 that is a through hole, and the cooling pin 134 is provided there. Is inserted and the cooling pin cover 166 is provided therearound, thereby facilitating the molding of the heat insulating material 152 while ensuring the cooling ability to the cooling pins 134 that are heat transfer cooling members.

  Further, by covering the side surface and the back surface portion of the cooling pin 134 as a heat transfer cooling member with the integrally formed cooling pin cover 166, the cool air from the freezer compartment discharge air passage 141 disposed on the back surface portion is provided. Is more effectively prevented from entering the periphery of the cooling pin 134.

  In the fifth embodiment, no cushioning material is provided around the cooling pin 134, but it may be provided. As a result, the through hole (penetrating portion 165) and the cooling pin cover 166 can be brought into close contact with each other, and cold air leakage can be prevented.

  In the fifth embodiment, a shielding object such as a tape is not installed in the opening 167 of the through hole (through part 165), but it may be installed. This can further prevent cold leakage.

  In the present embodiment, the air path for cooling the cooling pin 134 that is a heat transfer cooling member is the freezing chamber discharge air path 141, but the discharge air path of the ice making chamber 106 and the return air of the freezing room 108 are used. It may be a low temperature air path such as a road. Thereby, the installation place of the electrostatic atomizer 131 is expanded.

  In the present embodiment, the cooling means for cooling the cooling pin 134 that is the heat transfer cooling member is the cold air cooled by using the cooling source generated in the refrigeration cycle of the refrigerator 100. Heat transfer from a cooling pipe using cold air or cold temperature from a source may be used. Thereby, by adjusting the temperature of the cooling pipe, the cooling pin 134 that is a heat transfer cooling member can be cooled to an arbitrary temperature, and the temperature at which the atomization electrode 135 that is the atomization tip is cooled. It becomes easier to manage.

  In the present embodiment, the cooling means for cooling the cooling pin 134, which is a heat transfer cooling member, may use a Peltier element using the Peltier effect as an auxiliary component, and in this case, atomization is performed by the supply voltage to the Peltier. The temperature at the tip of the electrode 135 can be controlled at a very fine temperature.

  In the present embodiment, no cushioning material is used between the outer case 137 of the electrostatic atomizer 131 and the recess 111a of the heat insulating material 152. For prevention, a cushioning material such as urethane foam may be configured in the outer case 137 of the electrostatic atomizer 131 or the recess 111a of the heat insulating material 152. Thereby, the inflow of humidity to the cooling pin 134 can be prevented, and condensation on the heat insulating material 152 can be prevented.

(Embodiment 6)
The longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the refrigerator in Embodiment 6 of this invention right and left is as substantially the same as FIG. 1, and the key which shows the back surface of the vegetable compartment in the refrigerator of Embodiment 6 of this invention. The partial front view is the same as FIG. FIG. 8 is a cross-sectional view of the peripheral portion of the electrostatic atomizer provided in the vegetable compartment in the refrigerator of Embodiment 6 of the present invention, cut along the line AA in FIG.

  In the present embodiment, detailed description will be made only on portions that are different from the configurations described in detail in the first to fifth embodiments, and the same parts or the same technical idea as the configurations described in detail in the first to fifth embodiments will be described. The description of the applicable parts is omitted.

  In the figure, a rear partition wall 111 is a foam partition wall surface 151 made of a resin such as ABS, and a polystyrene foam to ensure heat insulation between the rear partition wall surface 151 and the freezer compartment discharge air passage 141. It is comprised with the heat insulating material 152 comprised by these. Moreover, the partition plate 161 for isolating the freezer compartment discharge air path 141 and the cooling chamber 110 is provided, and the rear partition wall surface 151 on the vegetable compartment 107 side has a storage compartment (vegetable compartment 107). A heating means 154 such as a heater is installed between the rear partition wall surface 151 and the heat insulating material 152 in order to adjust the temperature or prevent condensation on the surface.

  Here, a penetration part 165 is provided in a part of the inner wall of the rear partition wall 111 inside the storage room (vegetable room 107) so as to be cooler than other parts, and the electrostatic atomizer 131 is installed at that part. ing.

  The electrostatic atomizer 131 mainly includes an atomizing unit 139, a voltage applying unit 133, and an outer case 137. A spray port 132 and a humidity supply port 138 are configured in part of the outer case 137.

  The electrostatic atomizer 131 cools the atomization electrode 135, which is an atomization tip provided in the atomization unit 139, to a dew point temperature or less by a cooling unit, thereby removing moisture in the air around the atomization unit 139. Condensed water generated by condensation on the atomizing electrode 135 is sprayed as mist.

  When performing this dew condensation, in this embodiment, the low temperature cold air flowing through the freezer discharge air passage 141 is used as a cooling means, and the atomization electrode 135 which is the atomization tip is not directly cooled but atomized. The atomization electrode 135 that is the atomization tip is cooled via a cooling pin 134 that is a heat transfer cooling member having a larger heat capacity than the electrode 135.

  The atomizing part 139 is provided with an atomizing electrode 135 that is an atomizing tip, and the atomizing electrode 135 is fixedly connected to a cooling pin 134 that is a heat transfer cooling member made of a good heat conducting member such as aluminum or stainless steel. In addition, it is electrically connected including one end wired from the voltage application unit 133.

  The cooling pin 134 which is this electrode connecting member (heat transfer cooling member) has a large heat capacity of 50 times or more, preferably 100 times or more compared to the atomizing electrode 135, and is a high heat such as aluminum or copper. A conductive member is preferable, and it is desirable that the periphery of the cooling pin 134 is covered with a heat insulating material 152 in order to efficiently transfer the cold heat from one end to the other end.

  Further, a through portion 165 is provided on the back side of the concave portion 111a, and a convex portion 134a of a cooling pin 134 that is a heat transfer cooling member is provided in the through portion 165.

  When the through-hole 165 provided with the cooling pin 134 as the heat transfer cooling member is provided with a through-hole as in the present embodiment in the molding of foamed polystyrene or the like, the rigidity of the heat insulating wall is lowered, and the strength is insufficient or the molding is poor. There is a high possibility that defects such as cracks and perforations will occur, and there is a concern about quality deterioration.

  Therefore, in the present embodiment, by providing the heat insulating material 152 in the vicinity of the penetrating portion 165 with the protruding portion 162 that protrudes from the freezing chamber discharge air passage 141 and whose tip contacts the partition plate 161, the protruding portion is provided in the freezing chamber discharge air passage 141. Compared to the case where the surface on the cooling pin 134 side in the freezing chamber discharge air passage 141 is flat without providing 162, the rigidity of the periphery of the through-hole 165 is increased, and the wall thickness of the heat insulating material 152 is secured to further increase rigidity. The shape is improved. Further, the cooling pin 141 can be cooled from both the side surface and the back surface side by the protrusion 162.

  If the cooling pin 134 that is a heat transfer cooling member is installed directly in the air passage (freezer compartment discharge air passage 141), the cooling becomes excessive and the condensation amount of the atomizing electrode 135 that is the atomizing tip is excessive or frozen. there's a possibility that.

  Therefore, a through hole 165 is provided in the heat insulating material 152 on the back surface of the atomizing electrode 135 which is the atomizing tip, and the heat insulating material 152 in the vicinity of the through portion 165 protrudes into the freezer compartment discharge air passage 141 and the tip contacts the partition plate 161. By providing the protrusion 162 and inserting the cooling pin 134 into the through-hole 165 to ensure heat insulation, the cooling pin 134 does not directly contact the cooling means, and the heat insulating material 152 as a heat relaxation member and the partition plate 161 are interposed. Will come in contact.

  At this time, the side surfaces of the substantially cylindrical cooling pins 134 are all covered with the heat insulating material 152.

  Further, the opening 167 of the penetrating portion 165 is shielded from the air passage by a partition plate 161 that partitions the freezer compartment discharge air passage 141 and the cooling chamber 110 to ensure a sealing property.

  Although not shown in the opening 167 of the through hole (through portion 165), cold air may be blocked by applying a tape or the like.

  About the refrigerator 100 of this Embodiment comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The cooling pin 134 that is a heat transfer cooling member is cooled from the side surface via the protrusion 162 of the heat insulating material 152, so that the atomizing electrode 135 that is the atomizing tip is indirectly cooled by the cooling pin 134. Furthermore, it can cool indirectly by the double structure through the protrusion part 162 of the heat insulating material 152, and it can prevent that the atomization electrode 135 is cooled extremely.

  Further, since the heat insulating material 152 surrounds the cylindrical cooling pin 134 in a conical shape, and the side with the thinnest heat insulating wall is the side farthest from the atomizing electrode 135, the opening on the side surface outer periphery of the cooling pin 134 is particularly open. The portion located in the vicinity of the portion 167 is strongest, and the other portions can be cooled uniformly from the outer peripheral surface of the side wall.

  Further, the end surface of the cooling pin 134 on the side of the air passage (freezer compartment discharge air passage 141) is shielded from the air passage (freezer compartment discharge air passage 141) by the partition plate 161, and further, the end face of the protrusion 162 is kept at a certain distance. By securing and creeping the partition plate 161, the creeping distance is secured, and further, the cold air is prevented from directly hitting the cooling pins 134 that are heat transfer cooling members. In accordance with this, a tape or the like may be applied to the end face to improve the sealing performance. By fixing the opening 167 of the through-hole 165 to the partition plate 161 in this way, the refrigerator 100 having a large temperature change due to the outside air temperature, the inside temperature, the defrosting control, etc., is more reliable even when thermal deformation occurs. The cooling pin 135 and the atomization part 139 can be fixed.

  In addition, since the through hole 165 is provided only on a part of the back surface of the cooling pin 134 of the heat insulating material 152 and the thin wall portion is not formed, the foamed polystyrene can be easily molded and there is no problem such as breakage during assembly.

  Further, there is no gap between the cooling pin 134 and the through hole 165, and the opening 167 of the through hole 165 blocks the cold air with a tape or the like. Since it does not leak into the storage room, the storage room (vegetable room 107) and its peripheral parts do not cause dew condensation or low temperature abnormality.

  Furthermore, the back partition wall 111 can be made thin, and the storage amount in the warehouse can be further increased.

  In this way, when cooling by the cooling means, the end portion 134b which is the farthest part from the atomizing electrode 135 of the cooling pin 134 which is a heat transfer cooling member is cooled most strongly, whereby the cooling pin 134 is cooled. After the large heat capacity is cooled, the atomization electrode 135 as the atomization tip is cooled by the cooling pin 134 as the heat transfer cooling member, so that the temperature change of the cooling means is atomized as the atomization tip. The direct influence on the electrode 135 can be further alleviated, and a stable mist spray with a smaller fluctuation load can be realized.

  Moreover, since the atomizing device is the electrostatic atomizing device 131, the generated fine mist is very diffusive because it is very small particles, and reaches the entire vegetable compartment 107 to be sprayed. Since the fine mist to be sprayed is generated by high-pressure discharge and has a negative charge, the vegetable compartment 107 contains vegetables, which are fruits and vegetables having a positive charge, so that the atomized mist Are easy to gather on the surface of vegetables, which improves freshness.

  In addition, nano-level fine mist adhering to the vegetable surface contains a lot of OH radicals and a small amount of ozone, etc., and is effective for sterilization, antibacterial, sterilization, etc. Encourages vegetables to increase nutrients such as vitamin C.

  Here, when there is no water in the atomizing electrode 135, the discharge distance is increased, the air insulating layer cannot be destroyed, and the discharge phenomenon does not occur. As a result, no current flows between the atomizing electrode 135 and the counter electrode 136. By detecting this phenomenon with the control means 146 of the refrigerator 100, the high voltage of the voltage application unit 133 can be turned on / off, so that the heat load on the inside of the cabinet can be suppressed and energy can be saved.

  As described above, in the sixth embodiment, the through hole 165 is provided in the heat insulating material 152 with respect to the configuration of the cooling pin 134, the heat insulating material 152, and the cooling chamber 110 that are the convex portions 134a of the atomizing portion 139, and the location The cooling pin 134 is inserted into the cooling pin 134 and the end surface of the cooling pin 134 is covered with the partition plate 161, so that the cooling pin 134 that is a heat transfer cooling member is cooled via the protrusion 162 of the heat insulating material 152 and the partition plate 161. Therefore, the atomization electrode 135, which is the atomization tip, is indirectly cooled by the cooling pin 134, which is a heat transfer cooling member, and further indirectly cooled by a double structure via the protrusion 162 of the heat insulating material 152. It is possible to prevent the atomization electrode 135 that is the atomization tip portion from being extremely cooled. Further, the end surface of the cooling pin 134 on the side of the air passage (freezer compartment discharge air passage 141) is shielded from the air passage (freezer compartment discharge air passage 141) by the partition plate 161, and further, the end face of the protrusion 162 is kept at a certain distance. The creeping distance is ensured by securing and partitioning the plate 161 so as to prevent the cold air from directly hitting the cooling pins 134.

  Thereby, overcooling of the cooling pin 134 can be prevented, and overcooling and condensation of the storage room (vegetable room 107) due to cold air leakage or the like can be prevented.

  Moreover, in this Embodiment, the protrusion 162 which protrudes to the freezer compartment discharge air path 141 is provided in the heat insulating material 152 of the back surface partition wall 111 near the back surface of the cooling pin 134 which is a heat transfer cooling member, thereby freezing Compared to the case where the protrusion 162 is not provided in the chamber discharge air passage 141 and the surface on the cooling pin 134 side in the freezer discharge air passage 141 is flat, the heat transfer cooling member has increased rigidity around the cooling pin 134. Since the cooling pin 134 can be cooled from the side surface side, the surface area for heat conduction can be increased, and the periphery of the cooling pin 134 without reducing the cooling efficiency of the cooling pin 134 that is a heat transfer cooling member. The rigidity of can be increased.

  Further, by forming the outer peripheral surface of the protrusion 162 into a conical slope that becomes thinner toward the tip, the cold air flows so as to lick the outer periphery of the protrusion 162 that is a curved surface with respect to the flow direction of the cold air. While suppressing the increase of the air path resistance of the discharge air path 141 and the cooling pin 134 is uniformly cooled from the outer periphery of the side wall, the cooling pin 134 can be uniformly cooled, and the cooling pin 134 which is a heat transfer cooling member is installed. The atomization electrode 135 which is an atomization front-end | tip part can be efficiently cooled through.

  Moreover, the shape of the protrusion 162 may be a columnar shape, and in that case, the cooling pin 134 can be uniformly cooled from the side surface of the cooling pin 134, so that the cooling can be performed more uniformly.

  Further, in the present embodiment, by fixing (pressing) the opening 167 of the through-hole 165 to the partition plate 161, in the refrigerator 100 in which the temperature change is large due to the outside air temperature, the internal temperature, the defrosting control, etc., thermal deformation Even if this occurs, the cooling pin 135 and the atomizing portion 139 can be more reliably fixed.

  In the sixth embodiment, no cushioning material is provided around the cooling pin 134, but it may be provided. As a result, the cooling pin 134 and the through hole (through portion 165) can be brought into close contact with each other, and cold air leakage can be prevented. In the sixth embodiment, a shielding object such as a tape is not installed in the opening 167 of the through hole (through part 165), but it may be installed. This further prevents cold leaks.

  In this embodiment, no cushioning material is used between the outer case 137 of the electrostatic atomizer 131 and the through hole 165 of the heat insulating material 152, but moisture intrusion to the cooling pin 134 is prevented. Even if a cushioning material such as urethane foam is formed in the outer case 137 of the electrostatic atomizer 131 or the recess 111a or the through hole 165 of the heat insulating material 152 to prevent rattling, the embodiment shown in FIG. A cooling pin cover may be provided as shown in FIG. Thereby, the inflow of humidity to the cooling pin 134 can be prevented, and condensation on the heat insulating material 152 can be prevented.

(Embodiment 7)
FIG. 9 is a longitudinal sectional view of the main part showing a cross section when the peripheral part of the vegetable compartment of the refrigerator and the upper partition wall in the seventh embodiment of the present invention is cut left and right, and FIG. 10 is a seventh embodiment of the present invention. FIG. 11 is a cross-sectional view of the refrigerator in FIG. 9 cut along line BB in FIG. 9 and the cut surface is viewed from the direction of the arrow, FIG. 11 shows the upper partition wall of the vegetable room in the refrigerator in Embodiment 7 of the present invention It is sectional drawing which cut | disconnected by C line and looked at the cut surface from the arrow direction.

  In the present embodiment, detailed description will be made centering on portions that are different from the configurations described in the first to sixth embodiments, and portions having the same configuration as the first to sixth embodiments and portions to which the same technical idea can be applied. Will not be described in detail.

  In the figure, a heat insulating box 101 which is a refrigerator main body of the refrigerator 100 includes an outer box 102 mainly using a steel plate, an inner box 103 formed of a resin such as ABS, and the outer box 102 and the inner box 103. It is composed of a foam heat insulating material such as hard foam urethane filled in the space, insulated from the surroundings, and divided into a plurality of storage rooms. In the present embodiment, the vegetable compartment 107 is configured at the lowermost portion of the refrigerator 100, and the freezing chamber 108 that sets the temperature of the relatively low refrigeration temperature is configured thereon, with a partition wall therebetween. It is partitioned as a storage room at 174.

  A cooling chamber 110 for generating cold air is provided on the back surface of the freezing chamber 108, and in between, a cold air conveying air passage to each chamber having heat insulation properties and a back surface configured to thermally insulate each chamber. A partition wall 111 is configured.

  The cool air generated by the cooler 112 in the cooling chamber 110 is conveyed to each chamber by the cooling fan 113. Here, the vegetable compartment 107 according to the present embodiment uses the return air passage in which the cold air generated by the upper cooler 112 is directly or heat-exchanged in the other compartment, and the vegetable compartment 107 passes through the vegetable compartment discharge air passage 182. It flows into the chamber 107 and returns to the cooler 112 from the vegetable chamber suction air passage 181 again.

  A partition wall 174 is formed on the upper surface of the vegetable compartment 107 to partition the freezer compartment 108.

  The partition wall 174 is made of a vegetable compartment side partition plate 173 and a freezer compartment side partition plate 172 made of resin such as ABS, and a heat insulating material 171 made of foamed polystyrene or urethane for ensuring heat insulation therebetween. ing. Here, the recessed part 174a is provided in a part of wall surface by the side of the vegetable compartment 107 of the partition wall 174 so that it may become low temperature from another location, and the electrostatic atomizer 131 and the mist air path 177 are installed in the location. .

  The electrostatic atomizer 131 is mainly composed of an atomization unit 139 and a voltage application unit 133. The atomizing unit 139 is provided with an atomizing electrode 135, and the atomizing electrode 135 is fixed to a cooling pin 134 which is an electrode connecting member (heat transfer cooling member) made of a good heat conducting member such as aluminum, stainless steel, or brass. Electrical connection is made including one end wired from the voltage application unit 133.

  The cooling pin 134 which is this electrode connection member (heat transfer cooling member) has a large heat capacity of 50 times or more, preferably 100 times or more, compared with the atomizing electrode 135, for example, high heat conduction such as aluminum or copper. A member is preferable, and in order to efficiently conduct cold heat from one end of the cooling pin 134 to the other end, it is desirable that the periphery thereof is covered with a heat insulating material.

  In addition, since it is necessary to maintain the heat conduction of the atomizing electrode 135 and the cooling pin 134 in the long term, an epoxy member or the like is poured into the connecting portion to prevent intrusion of humidity or the like, and the thermal resistance is suppressed. The atomization electrode 135 and the cooling pin 134 are fixed. Further, the atomizing electrode 135 may be fixed to the cooling pin 134 by press fitting or the like in order to reduce the thermal resistance.

  Further, the cooling pin 134 needs to conduct heat at a low temperature in a heat insulating material for insulating the storage chamber and the cooler 112 or the air passage, so that the length is preferably 5 mm or more, preferably 10 mm or more. . However, when the length is set to 30 mm or more, the effect is reduced, and at the same time, the partition wall 174 is thickened and the amount of storage in the warehouse is reduced.

  In addition, since the electrostatic atomizer 131 installed in the storage room (vegetable room 107) is in a high humidity environment and the humidity may affect the cooling pin 134, the cooling pin 134 is corrosion resistant, It is preferable to select a metal material having rust resistance performance or a material subjected to surface treatment or coating such as alumite treatment.

  A cooling pin 134 as a heat transfer cooling member is fitted into a recessed portion 174a provided in a part of the heat insulating material 171 and fixed to the heat insulating material 171, and the atomizing electrode 135 has a shape protruding in an L shape with the cooling pin 134. It is attached with. This contributes to the thinning of the partition wall 174 in order to increase the storage amount in the warehouse.

  Therefore, the end surface of the cooling pin 134, which is a heat transfer cooling member, on the opposite side of the atomizing electrode 135 is pressed against the freezer compartment partition plate 172 molded of a resin such as ABS or PP, and the cold air in the freezer compartment 108 is removed. The atomization electrode 135 which is an atomization front-end | tip part is cooled by heat conduction through the freezer compartment partition plate 172, and it makes it condense on the front-end | tip, and produces | generates water.

  Since the cooling means can be configured with such a simple structure, it is possible to realize the atomizing section 139 with few failures and high reliability. Moreover, since the cooling pin 134 which is a heat transfer cooling member and the atomization electrode 135 which is an atomization front-end | tip part can be cooled using the cooling source of a refrigerating cycle, atomization can be performed with energy saving.

  Also, a donut disk-shaped counter electrode 136 is attached at a position facing the atomizing electrode 135 so as to maintain a certain distance from the tip of the atomizing electrode 135, and a mist air passage 177 is formed on the extension. Yes.

  The mist air passage 177 is provided in the recess 174 a of the partition wall 174 that partitions the vegetable compartment 107 and the freezing compartment 108.

  The partition wall 174 is generally composed of 25 mm to 45 mm in order to ensure heat insulation and internal capacity. A mist air passage 177 is provided in the recess 174a.

  The mist air passage 177 has a suction port 183 for supplying humidity from the vegetable compartment 107 and a mist discharge port 176 for spraying mist to the vegetable compartment 107, and the mist suction port 183 provides high humidity to the atomization unit 139. Since air flows in and the atomizing electrode 135 of the atomizing section 139 is cooled from the freezer compartment by heat conduction through the cooling pin, the tip of the atomizing electrode 135 is condensed.

  Mist is generated by applying a high voltage between the tip of the atomizing electrode 135 and the counter electrode 136.

  The generated mist passes through the mist air passage 177 and is sprayed to the vegetable compartment 107 from the mist discharge port 176.

  Furthermore, a voltage application unit 133 electrically connected to the atomization unit 139 is configured, and the negative potential side of the voltage application unit 133 that generates a high voltage is electrically connected to the atomization electrode 135 and the positive potential side is electrically connected to the counter electrode 136. Wired and connected to.

  In the vicinity of the atomizing electrode 135, discharge always occurs due to the mist spraying, and therefore, there is a possibility that the tip of the atomizing electrode 135 is worn. Since the refrigerator 100 will be operated for more than 10 years, the surface of the atomizing electrode 135 needs to have a tough surface treatment, and for example, it is desirable to use nickel plating, gold plating, or platinum plating.

  The counter electrode 136 is made of, for example, stainless steel, and it is necessary to ensure its long-term reliability. In particular, in order to prevent foreign matter adhesion and contamination, it is desirable to perform surface treatment such as platinum plating.

  The voltage application unit 133 communicates and is controlled with the control means 146 of the refrigerator main body (the heat insulating box body 101), and performs high voltage ON / OFF by an input signal from the refrigerator 100 or the electrostatic atomizer 131.

  A heating means 178 such as a heater is installed on the partition wall 174 that fixes the electrostatic atomizer 131 in order to prevent condensation in the air passage.

  About the refrigerator comprised as mentioned above, the operation | movement / effect | action is demonstrated below.

  The thickness of the heat insulating material 171 of the partition wall 174 in which the electrostatic atomizer 131 is installed requires a cooling capacity for cooling the cooling pin 134 to which the atomizing electrode 135 is fixed. The wall thickness of the portion where the converting device 131 is provided is configured to be thinner than other portions. Therefore, the cooling pin 134 that is a heat transfer cooling member can be cooled by heat conduction from the freezer compartment at a relatively low temperature, and the atomization electrode 135 that is the atomization tip can be cooled. Here, if the tip temperature of the atomizing electrode 135 is set to be equal to or lower than the dew point, water vapor in the vicinity of the atomizing electrode 135 is condensed on the atomizing electrode 135, and water droplets are reliably generated.

  Although not shown here, by installing an internal temperature detection unit, an internal humidity detection unit, and the like in the storage, the dew point can be determined strictly according to changes in the internal environment by a predetermined calculation.

  In this state, the atomizing electrode 135 is set to the negative voltage side, the counter electrode 136 is set to the positive voltage side, and a high voltage (for example, 7.5 kV) is applied between the electrodes by the voltage applying unit 133. At this time, the air insulating layer is destroyed between the electrodes, corona discharge occurs, the water of the atomizing electrode 135 is atomized from the tip of the electrode, and nano-level fine mist having a charge of less than 1 μm that cannot be visually observed, and the accompanying ozone And OH radicals are generated.

  The generated fine mist is sprayed into the vegetable containers (lower storage container 119 and upper storage container 120) in the vegetable compartment 107. The fine mist sprayed from the electrostatic atomizer 131 is negatively charged. On the other hand, vegetables which are fruits and vegetables are stored in the vegetable room 107, and green rape leaves, fruits and the like are also stored therein. These fruits and vegetables are usually stored in a slightly deflated state due to transpiration at the time of purchase return or transpiration during storage. These fruits and vegetables are normally charged with a positive charge, and the sprayed fine mist with a negative charge tends to collect on the vegetable surface. Therefore, the sprayed fine mist makes the inside of the vegetable compartment 107 highly humid and at the same time adheres to the surface of the fruits and vegetables, suppresses the transpiration from the fruits and vegetables, and improves the freshness. In addition, it penetrates into the tissues through the gaps between the cells of vegetables and fruits, the water evaporates, the water is supplied again into the deflated cells, the deflation is eliminated by the swelling pressure of the cells, and it returns to a crispy state .

  Moreover, the generated fine mist holds ozone, OH radicals, etc., and these hold strong oxidizing power. Therefore, the generated fine mist can deodorize the vegetable room and antibacterial and sterilize the vegetable surface, and at the same time oxidatively decompose and remove harmful substances such as agricultural chemicals and wax adhering to the vegetable surface.

  As described above, in the seventh embodiment, the refrigerator main body (the heat insulating box body 101) has a plurality of storage rooms, and the top side of the vegetable room 107 which is a storage room provided with the atomizing unit 139 has a fog. The freezing room 108 which is a low-temperature storage room kept at a lower temperature than the vegetable room 107 which is a storage room provided with the conversion unit 139 is provided, and the atomization unit 139 is attached to the partition wall 174 on the top surface side of the vegetable room 107 It was.

  As a result, when there is a freezing temperature zone storage room such as the freezing room 108 or the ice making room 106 in the upper part of the storage room (vegetable room 107) provided with the atomizing section 139, the top partition wall 174 partitions them. By installing the atomization unit 139, the cooling pin 134, which is a heat transfer cooling member of the atomization unit 139, is cooled by the cool air of the upper storage chamber (freezer chamber 108), and the atomization electrode 135 is cooled and condensed. Therefore, a special cooling device is unnecessary, and the atomization unit 139 can be provided with a simple configuration. Therefore, an atomization unit with few failures and high reliability can be realized.

  In the present embodiment, a partition wall for partitioning the storage room, and a low-temperature storage room (freezer room 108) are provided on the top surface side of the storage room (vegetable room 107). Is attached to the partition wall 174 on the top surface, so that when the storage room in the freezing temperature zone such as the freezing chamber 108 or the ice making chamber 106 is at the upper part, it is installed on the partition wall 174 on the top surface for partitioning them. Since the atomization electrode 135 which is the atomization front-end | tip part of the electrostatic atomizer 131 by the source can be cooled and condensed, a special cooling device is unnecessary and can be sprayed from the top surface, so the vegetable compartment 107 It is easy to diffuse to the whole storage container (lower storage container 119, upper storage container 120).

  Moreover, since the atomization part 139 is not provided in the storage space of the vegetable compartment 107 but is provided in the back side of the vegetable compartment side partition plate 173, since it is hard to touch a human hand, safety can be improved.

  Moreover, the atomization part 139 of this Embodiment produces | generates mist by an electrostatic atomization system, and breaks up a water droplet using electric energy, such as a high voltage, and generates fine mist by subdividing. . The generated mist has a charge, so by giving the mist a charge opposite to the object you want to attach, such as vegetables or fruits, for example, a mist with a negative charge is added to a vegetable with a positive charge. Spraying improves adhesion to vegetables and fruits, so that the mist adheres more uniformly to the vegetable surface and improves the mist adhesion rate compared to non-charged mists. I can do it. The sprayed fine mist can be directly sprayed on the food in the vegetable container (lower storage container 119, upper storage container 120), and the fine mist adheres to the vegetable surface using the potential of the fine mist and vegetables. Therefore, it is possible to improve the freshness efficiently.

  Furthermore, the makeup water of this embodiment uses condensed water instead of tap water supplied from the outside. Therefore, there are no mineral components or impurities, and deterioration of the water retention due to the deterioration or clogging of the tip of the atomizing electrode 135 can be prevented.

  Furthermore, since the mist of the present embodiment contains radicals, agricultural chemicals and wax adhering to the vegetable surface can be decomposed and removed with an extremely small amount of water, so that water can be saved and input can be reduced.

(Embodiment 8)
FIG. 12 is a detailed cross-sectional view of the periphery of the ultrasonic atomizer of the refrigerator in the eighth embodiment of the present invention.

  In the present embodiment, detailed description will be made centering on portions that are different from the configurations described in the first to seventh embodiments, and portions having the same configuration as the first to seventh embodiments and portions to which the same technical idea can be applied. Will not be described in detail.

  In the figure, a rear partition wall 111 is composed of a rear partition wall surface 151 made of a resin such as ABS, and a heat insulating material 152 made of foamed polystyrene for ensuring the heat insulation of the storage room. . In addition, a partition plate 161 for isolating the freezer compartment discharge air passage 141 and the cooling chamber 110 is provided, and the rear partition wall surface 151 is provided with temperature control of the storage chamber or condensation on the surface. In order to prevent this, a heating means 154 such as a heater is installed between the rear partition wall surface 151 and the heat insulating material 152.

  Here, a concave portion 111a is provided in a part of the wall surface of the back partition wall 111 on the storage chamber side, and a horn-type ultrasonic atomizing device 200 which is an atomizing device is installed at that portion.

  As described above, the ultrasonic atomizing device 200 that is an atomizing device is provided in the rear partition wall 111 including the heating means 154 such as a heater among the side walls, and at least below the ultrasonic atomizing device 200. It is assumed that heating means 154 is provided.

  The ultrasonic atomizer 200 includes a horn type ultrasonic vibrator 208 that includes an horn part 201 and a cooling pin 205 (heat transfer cooling member) that are an atomizing part 211, electrode parts 202 and 204, and a piezoelectric element 203. And an outer case 207 for fixing and enclosing them, and a spraying port 209 for spraying the mist provided in the outer case into the vegetable compartment. The horn part 201 which is an atomization front-end | tip part becomes a convex part shape toward a front-end | tip part from a bottom face part by cutting process, a sintering process, etc. The tip portion 201a of the horn portion 201 is processed into a rectangle or a circle, the cross-sectional area ratio is about 1/5 or less, and the side surface shape of the horn portion 201 depends on the oscillation frequency of the piezoelectric element 203. The electrode portion 202, the piezoelectric element 203, and the electrode portion 204 are integrally formed in this order, and are bonded and fixed with an epoxy or silicon-based adhesive between the respective connections, and the vibration generated in the piezoelectric element 203 is maximized at the horn portion tip 201a. It is comprised so that it may become an amplitude.

  Further, although not shown here, the piezoelectric element and the electrode part are configured by a cylindrical system, and the central part is a cavity. A cooling pin is formed here, and is crimped and fixed to the horn part 201.

  The outer shell of the horn type ultrasonic transducer 208 is coated with a silicon resin, an epoxy resin, an acrylic resin or the like (not shown).

  The horn part 201 which is an atomization front-end | tip part is taken as a material with high heat conductivity, for example, metals, such as aluminum, titanium, stainless steel, are mentioned. In particular, it is preferable to select aluminum as a main component from the viewpoint of light weight, high thermal conductivity, and amplitude amplification performance during ultrasonic transmission. However, corrosion resistance as in a refrigerator is necessary and long. It is desirable to select a material mainly made of stainless steel such as SUS304 or SUS316L, which requires consideration of life extension, because it is difficult to cause deterioration over time and long-term reliability can be secured.

  The spray port 209 is provided with a rectangular or circular hole in a part of the outer case 207, and the direction in which the liquid is atomized from the atomizing portion 211, that is, the portion of the outer case 207 facing the tip portion 201 a of the horn portion 201. Is provided.

  The ultrasonic atomizing device 200 which is an atomizing device cools the horn 201 which is the atomizing tip provided in the atomizing unit 211 to a dew point temperature or less by a cooling means, so that moisture in the air around the atomizing unit is obtained. The dew condensation water produced by the dew condensation on the horn part 201 is sprayed as mist from the tip part 201a.

  Further, when the door is opened and closed and the humid state continues, and when more condensed water than necessary is supplied to the horn unit 201, the water is discharged from the drain port 138. The drain port 138 also functions as a cold air supply port for taking cold air into the outer case 207 in addition to the function of a drain hole for discharging water accumulated in the outer case 207 to the outside.

  The drained dew condensation water flows along the rear partition wall surface 151 of the partition wall 111, but it is very small and evaporates due to convection in the vegetable compartment and the heater on the back. At this time, since the heating means 154 such as a heater is provided on the wall surface, an upward air flow is likely to be generated around the rear partition wall 111 as compared with other side walls. Therefore, the rear partition wall 111 is provided with the atomizing portion 211, and further from the drain port 138 that functions as a cold air supply port provided on the lower surface portion of the outer case 207 that houses the atomizing portion. Cold air flows in and condensation can be further promoted.

  About the refrigerator comprised as mentioned above, the operation | movement is demonstrated below.

  The cooling pin 205 of the ultrasonic atomizer 200 in which the excess water vapor in the vegetable compartment 107 is installed in a part of the rear partition wall 111 is cooled by a freezer compartment air passage in which low-temperature cold air flows from the vegetable compartment. The And since the cooling pin 205 and the horn part 201 are crimped | bonded, the horn part 201 which is an atomization front-end | tip part is cooled by heat conduction, and the water vapor | steam contained in the high humidity air of a vegetable compartment is made into the horn part 201 by which temperature was lowered | hung Condensation water is generated by condensation and adheres to the tip 201a.

  In this state, the high voltage / oscillation circuit is energized to oscillate a high voltage at a predetermined frequency (for example, 80 k to 210 kHz) and when applied to the electrode portion 202 and the electrode portion 204, the piezoelectric element 202 vibrates and the supplied fog Capillary waves are generated on the surface of the water adhering to the tip 201a of the conversion unit 211, and the water at the tip is atomized into several μm to several tens of μm and atomized as mist in the vibration direction. The fine particle mist passes through the spray port 209, and the mist having a large particle diameter generated from other than the tip 201a of the horn 201 collides with the outer peripheral wall of the rectangular or circular spray port 209 and is sprayed into the storage chamber. Since it remains in the case, only the mist having a relatively small particle size is classified, and only the fine mist is sprayed onto the vegetable room 107 which is a storage room.

  Further, the ultrasonic atomizer 200 is energized at regular intervals, for example, 1 minute ON, 9 minutes OFF, and sprayed onto the vegetable compartment 107 while adjusting the amount of atomization generated. Humidify quickly. As a result, the vegetable compartment 107 can be highly humidified, and transpiration from the vegetables can be suppressed. At the same time, the vibration generated in the piezoelectric element 203 is concentrated so that the tip portion 201a of the horn portion 201 has the maximum amplitude. Therefore, the piezoelectric element unit 203 can be suppressed to a low heat generation amount of about 1 W to 2 W, and the temperature influence on the vegetable compartment 107 can be reduced.

  The coating material covering the piezoelectric element 203 is repeatedly vibrated due to its flexibility in terms of amplitude amplification performance during ultrasonic transmission in order to prevent deterioration of the coding material in a refrigerator that is premised on long-term use of about 10 years on average. It is preferable to select a resin mainly composed of a silicon resin that is not easily deteriorated even if it is subjected to the liquid. In addition to preventing the deterioration of the adhesive, it contributes to the improvement of the life reliability and can withstand the actual load when mounted in the refrigerator.

  A packing material (not shown) may be used in the gap between the outer case 207 and the horn type ultrasonic transducer to prevent water leakage and resonance. As a result, the intrusion of liquid or water vapor as described above can be prevented more reliably and noise can be reduced. Specifically, life reliability is improved by using a fluorine-based packing material.

  As described above, in the present embodiment, the vegetable room which is a relatively high humidity environment with heat insulation compartments, and the horn type ultrasonic atomizer for spraying the liquid to the vegetable room are provided, and the horn tip is condensed. By installing a cooling pin in the horn part to generate water, the tip can be condensed, and the quality in the vegetable compartment can be maintained by spraying it directly.

  In the present embodiment, the liquid to be atomized may be, for example, zinc ion water, silver ion water, copper ion water, or the like containing metal ions having bacteriostatic power and deodorant power. Thereby, the inhibitory effect of the microbe which generate | occur | produces in a storage chamber can be improved.

  In the present embodiment, the shape of the portion of the heat insulating material 152 provided with the cooling pin 205 is shown in FIG. 12 as an example, but the shape related to the portion where the cooling pin 205 is disposed is the first to seventh embodiments. Needless to say, the same effect can be obtained even if the shape is the same as described above.

  In the present embodiment, the atomizing device is the ultrasonic atomizing device 200. However, the electrostatic atomizing device described in the first to seventh embodiments and other atomizers such as an ejector method may be used. Even if there is a mist spray using water in which moisture in the air is actively condensed, other atomization devices may be used, and the technical idea described in the above embodiment is applied. can do.

  As described above, since the refrigerator according to the present invention can stably supply fine mist to the storage room with a simple configuration, it is of course performed for a household or commercial refrigerator or a vegetable storage. It can also be used for low-temperature distribution of foods such as vegetables and warehouses.

The longitudinal cross-sectional view which shows the cross section at the time of cutting the refrigerator in Embodiment 1 of this invention into right and left The principal part front view which shows the back of the vegetable compartment in the refrigerator of Embodiment 1 of this invention Sectional drawing which cut | disconnected the peripheral part of the electrostatic atomizer provided in the vegetable compartment in the refrigerator of Embodiment 1 of this invention with the AA line of FIG. 2, and saw the cut surface from the arrow direction. Sectional drawing which cut | disconnected the peripheral part of the electrostatic atomizer with which the vegetable compartment in the refrigerator of Embodiment 2 of this invention was equipped was cut | disconnected by the AA line of FIG. The principal part longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the peripheral part of the door side of the partition wall of the vegetable compartment upper part of the refrigerator in Embodiment 3 of this invention right and left Sectional drawing which cut | disconnected the peripheral part of the electrostatic atomizer with which the vegetable compartment was equipped in the refrigerator of Embodiment 4 of this invention with the AA line of FIG. 2, and saw the cut surface from the arrow direction. Sectional drawing which cut | disconnected the peripheral part of the electrostatic atomizer with which the vegetable compartment was equipped in the refrigerator of Embodiment 5 of this invention with the AA line of FIG. 2, and saw the cut surface from the arrow direction. Sectional drawing which cut | disconnected the peripheral part of the electrostatic atomizer with which the vegetable compartment was equipped in the refrigerator of Embodiment 6 of this invention with the AA line of FIG. 2, and saw the cut surface from the arrow direction. The principal part longitudinal cross-sectional view which shows the cross section at the time of cut | disconnecting the periphery of the vegetable compartment of the refrigerator in Embodiment 7 of this invention, and its upper partition wall right and left Sectional drawing which cut the refrigerator in Embodiment 7 of this invention by the BB line of FIG. 9, and saw the cut surface from the arrow direction Sectional drawing which cut | disconnected the partition wall of the upper part of the vegetable compartment of the refrigerator in Embodiment 7 of this invention with the CC line of FIG. 10, and saw the cut surface from the arrow direction. The detailed sectional view of the ultrasonic atomizer peripheral part of the refrigerator in Embodiment 8 of the present invention Vertical section of a vegetable room in a conventional refrigerator The expanded perspective view which shows the principal part of the ultrasonic atomizer provided in the vegetable compartment of the conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Refrigerator 101 Heat insulation box 102 Outer box 103 Inner box 104 Refrigeration room 105 Switching room 106 Ice making room 107 Vegetable room 108 Freezing room 109 Compressor 110 Cooling room 111 Back surface partition wall 111a Recess 112 Cooler 113 Cooling fan 114 Radiant heater 115 Drain pan 116 Drain tube 117 Evaporating dish 118 Door 119 Lower storage container 120 Upper storage container 122 Lid 123 First partition wall 124 Vegetable chamber discharge port 125 Second partition wall 126 Vegetable chamber suction port 131 Electrostatic atomizer 132 Spraying port 133 Voltage application unit 134 Cooling pin (heat transfer cooling member)
134a Convex part 135 Atomization electrode 136 Counter electrode 137 Outer case 138 Humidity supply port 139 Atomization part 140 Refrigeration room return air passage 141 Freezer compartment discharge air passage 146 Control means 151 Back surface partition wall surface 152 Heat insulation material 154 Heating means 155 Heat insulation Material recess 156 Low temperature air passage 161 Cooling chamber partition wall 162 Heat insulation material projection 165 Through portion 166 Cooling pin cover 167 Opening 171 Heat insulation material 172 Freezer compartment side partition plate 173 Vegetable compartment side partition plate 174 Partition wall 176 Mist discharge port 177 Mist Air path 178 Heater 181 Vegetable room suction air path 182 Vegetable room discharge air path 183 Mist suction port 200 Horn type ultrasonic atomizer 201 Horn part 202 Electrode part 203 Piezoelectric element 204 Electrode part 205 Cooling pin 207 Outer case 208 Condensation water 209 Spray port 211 Atomization part

Claims (10)

A storage compartment partitioned by heat insulation, and an atomizing section for spraying mist in the storage compartment,
The atomization section includes an atomization tip portion to which mist is sprayed, a heat transfer cooling member connected to the atomization tip portion, and a cooling means for cooling the heat transfer cooling member, and the atomization The tip is fixed to one end of the heat transfer cooling member and is also electrically connected, and the cooling means cools the heat transfer cooling member to indirectly reduce the atomization tip to a dew point or less. A refrigerator that cools, condenses moisture in the air at the atomizing tip, and sprays it as mist in the storage chamber.   The refrigerator according to claim 1, wherein the heat transfer cooling member is cooled by a cooling means via a heat relaxation member.   The refrigerator main body has a plurality of storage chambers and a cooling chamber that houses a cooler for cooling the storage chamber, and the atomizing section is attached to a partition wall on the cooling chamber side of the storage chamber. 2. The refrigerator according to 2.   The refrigerator main body has a plurality of storage chambers, and a low temperature storage chamber maintained at a lower temperature than the storage chamber including the atomization unit is provided on the top surface side of the storage chamber including the atomization unit, the atomization unit The refrigerator according to claim 1, wherein the refrigerator is attached to a partition wall on a top surface side of a storage room provided with the atomizing portion.   The refrigerator as described in any one of Claim 1 to 4 which has a recessed part in the storage chamber side of the partition wall to which the atomization part is attached, and a heat-transfer cooling member is inserted in the said recessed part.   The refrigerator according to any one of claims 1 to 4, wherein the partition wall to which the atomizing part is attached has a through part, and a heat transfer cooling member is inserted into the through part.   The refrigerator according to any one of claims 1 to 6, wherein the cooling means for cooling the heat transfer cooling member uses cold air generated in a cooling chamber.   The refrigerator according to any one of claims 1 to 7, wherein the cooling means for cooling the heat transfer cooling member uses heat conduction from an air passage through which cool air generated by the cooler flows.   The refrigerator according to any one of claims 1 to 7, wherein the cooling means for cooling the heat transfer cooling member uses heat transfer from a cooling pipe cooled by using a cooling source generated in a refrigeration cycle of the refrigerator.   The heat transfer cooling member has a shape having a convex portion on the opposite side to the atomizing tip portion, and the end portion on the convex portion side in the atomizing portion is closest to the cooling means. Refrigerator.