JP2013122355A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator with an atomizer configured so that no bacteria interfuses into water for humidifying housing space.SOLUTION: In the refrigerator which includes a humidifier for humidifying the inside of housing space to house an object, the humidifier 10 includes: a permeable vibration body 11; a water supplying unit 12 disposed outside the housing space 1 and for supplying water to the vibration body 11; and an ultrasonic vibration generating unit 18 for discharging, into the housing space 1, permeated water atomized by ultrasonic vibration of the vibration body 11. The vibration body 11 is attached so that an opening 8 formed at a wall defining the housing space 1 is clogged with the vibration body 11. In addition, the water supplying unit 12 has a water outlet 12a contacting the vibration body 11. Moreover, the water is supplied so that the water contacts the vibration body 11 at the water outlet 12a without clearance.

Description

  The present invention relates to a refrigerator provided with a humidifying device for adjusting the humidity of an accommodation space.

  In recent refrigerators, due to the difference in storage temperature of food, a configuration is adopted in which the accommodation space is divided, for example, a refrigerator room, a freezer room, and a vegetable room. In such a refrigerator, in the vegetable compartment, the humidity in the vegetable compartment is an important factor in order to maintain the freshness of the contained vegetables. For this reason, some refrigerators are adjusted by using a humidifier as humidity adjusting means so that the humidity in the vegetable compartment becomes an appropriate value.

  As the humidifier, for example, a moisture absorption / release film type, a discharge type, and an ultrasonic type are known. As shown in FIGS. 12 and 13, the moisture-absorbing / releasing membrane type absorbs moisture from air at a constant humidity out of the membrane material 50 having a large number of holes, and touches the dry air. A moisture absorbing / releasing film having a property of releasing moisture or a moisture absorbing / releasing film having a property of absorbing moisture is used. In the space to be conditioned, for example, the vegetable room 51, if the humidity is above a certain level, moisture is absorbed based on the film characteristics, and if the humidity is below a certain level, the film itself is ultrasonically vibrated as shown in FIG. Moisturize. In this moisture-absorbing / releasing film type, humidity adjustment is dependent on the humidity in the vegetable compartment 51, so it may be difficult to humidify, and it may be difficult to maintain the freshness of vegetables and the like. It was. In addition, the hygroscopic film was difficult to maintain cleanliness because various bacteria and the like existing in the vegetable room were likely to adhere.

  Next, as shown in FIG. 14, the discharge humidifier includes electrodes 52 and 53 facing each other, and water condensed on the electrode surface is turned into mist (ion mist) 55 by discharge, or heat exchange of the refrigerator. Water 60 condensed in the vessel is dropped between the electrodes 52 and 53 to form a mist 55 by discharge (FIG. 15). In such a discharge type, it is difficult to control the amount of water dripped at a time, and when the amount of water is large, the electrodes 52 and 53 are short-circuited as shown in FIG. The humidifying effect is lowered without being obtained.

  In general, this type of discharge type has the electrodes 52 and 53 installed in a space for generating cold air communicating with the vegetable chamber 51 which is a humidifying space, for example, so that the vegetable chamber 51 is cooled. May be dehumidified by a heat exchanger. For this reason, as in the case where the amount of water between the electrodes 52 and 53 is small, there are cases where a sufficient humidification effect cannot be obtained. In addition, at the positions of the electrodes 52 and 53 as described above, germs and odor components existing in the atmosphere of the vegetable compartment 51 flowing through the opening 54 adhere or deposit on at least the electrodes 52 and 53. There is also the possibility of breeding for germs.

  Further, in the ultrasonic humidifier, as shown in FIG. 17, the ultrasonic vibrator 57 is immersed in a water tank 56 in which water for making the mist 55 is stored, and the ultrasonic vibrator 57 is vibrated. The water is made into mist 55. In this ultrasonic type, as shown in an enlarged view in the figure, the particle diameter of the mist 56 tends to increase, and the vaporization efficiency of the mist 55 is lowered. In addition, if the particle size is large, the weight of each particle becomes heavy, and if it is attempted to diffuse throughout the vegetable compartment 51, it is necessary to use a fan 58 or the like. Moreover, since it is necessary to arrange | position the ultrasonic transducer | vibrator 57 in water, water will be consumed in large quantities, and if the water tank 56 was enlarged for that purpose, the refrigerator volume was reduced. Further, like the above-described discharge type, the water tank 56 is installed in a space for generating cold air, and communicates with the vegetable room 51 through the opening 54. Like the discharge type, the bacteria inside the vegetable room It was in a state where it was easy for foreign matter to enter.

  For example, like the thing of patent document 1, the mist spraying means using an ultrasonic wave for atomizing water on the top | upper surface of the vegetable room in the upper part of the storage container provided in a vegetable room, a vegetable room, a freezer compartment, Generated by the mist spraying means in the storage container through the mist spraying port provided in the lid of the storage container that can be pulled out in the vegetable room A configuration for supplying the mist thus produced is known. In the thing of this patent document 1, the water | moisture content which came out of the vegetable in a vegetable room uses the dew condensation to a mist spraying means with the cold in a room | chamber interior, and supplies water to a mist spraying means.

  In the vegetable room, there are many opportunities for the atmosphere outside the refrigerator and the inside atmosphere in the vegetable room to come into contact with each other when the vegetables are put in and out. For this reason, external germs tend to enter the vegetable compartment. Moreover, in the vegetable room, in addition to such external germs, germs may adhere to the stored vegetables themselves. For this reason, when condensation occurs in the mist spraying means, germs may be mixed in the condensation. When such dew condensation is sprayed as a mist, various bacteria are diffused in the vegetable compartment, which may make it difficult to keep the vegetable compartment clean.

JP 2011-69598 A

  Then, this invention is made | formed in view of the above problems, and it aims at providing a refrigerator provided with the humidification apparatus comprised so that miscellaneous bacteria might not mix in the water for humidifying an accommodation space.

  That is, the refrigerator according to the present invention is a refrigerator provided with a humidifying device that humidifies the inside of an accommodation space in which articles are accommodated, wherein the humidifying device has a vibrating body having a plurality of fine holes, and outside the accommodation space. A water supply unit for supplying water to the micropores of the vibrator, and an ultrasonic vibration generator for causing the vibrator to ultrasonically vibrate so that water is sprayed from the microholes into the accommodation space. The vibrating body is attached so as to close an opening formed in a wall that defines the housing space, and the water supply portion has a water outlet opening that contacts the vibrating body. In the water outlet, the water is supplied so that the water contacts the vibrating body without a gap.

  According to such a configuration, the vibrating body closes the opening provided in the wall forming the housing space, and water contacts the vibrating body without a gap at the water outlet of the water supply unit. It is impossible to enter the water supply section, and no air pool is generated in the water supply section. That is, since air in the accommodation space does not stay in the water supply unit for a long time, it is possible to prevent germs and the like from being generated in the water supply unit. Further, when the vibrating body is driven by the ultrasonic vibration generating unit and ultrasonically vibrated, the water soaked into the vibrating body is atomized with fine water droplets and diffused into the containing space. Air hardly flows back through the fine holes of the vibrating body into the water supply section, and it is more difficult for germs to propagate. For these reasons, it is possible to prevent germs and dust in the atmosphere of the accommodation space from being mixed into the water in the water supply unit.

  Therefore, since germs and the like are not mixed into the mist diffused by the humidifier, it is possible to suppress the spread of germs and the like through the mist in the accommodation space, and it is possible to maintain the cleanliness level.

  In order to reliably block the contact between the accommodation space and water with the vibrating body, the vibrating body is a metal plate in which a plurality of fine holes are formed so as to penetrate each face plate portion. The face plate portion is attached from the outside so as to close the opening formed in the wall that defines the housing space, and the water supply portion contacts the region facing the opening in the other face plate portion. It is desirable that it is attached so as to.

  In order to facilitate the supply of water, the water supply unit is provided outside the housing space, and further includes a water storage unit in which water is stored, and the water supply unit is connected to the water inlet through the water storage unit. What is comprised so that a water can be distribute | circulated to a water outlet is desirable.

  In order to stably supply water to the fine holes of the vibrating body, it is desirable that the water supply portion is located above the vibrating body and the water storage portion is located above the vibrating body.

  In order to suppress the adhesion of water droplets by direct contact with the articles stored in the storage space, the storage space has a storage section in which the storage object is stored, and the fog generated by the humidifier is evaporated. It is desirable that the evaporation section is divided into two parts. In this case, it is desirable that the storage space is a vegetable room for storing vegetables, and the vibrator is installed so as to close an opening formed in the upper part of the vegetable room.

  In order to suppress clogging of the vibrating body, it is desirable to provide a filter for filtering water supplied to the vibrating body at a position upstream from the vibrating body.

  In order to adjust the water pressure applied to the vibrating body and vibrate the vibrating body to a desired state, a water stop valve is provided to selectively stop water supplied to the vibrating body at a position upstream from the vibrating body. Is preferred.

  In order to accurately control the humidity of the housing space, it is desirable to provide a humidity sensor for detecting the humidity in the housing space. In this case, it is preferable that the humidity sensor is configured to start the operation of the ultrasonic vibration generating unit when the humidity in the accommodation space falls below a predetermined humidity.

  In order to sufficiently evaporate the water droplets of fog, the evaporating unit is provided above the housing unit, and a vibrating body is attached so as to close an opening formed in a rear wall forming the evaporating unit, and the evaporating unit It is desirable to spray mist in the horizontal direction.

  In order to promote the diffusion of the mist, a configuration in which the mist is circulated by the cold air in the housing space that circulates due to a temperature difference generated in the housing space is desirable.

  In order to reliably block the contact between the storage space and water and efficiently cool the storage space, a heat exchanger that generates cold air for cooling the storage space is installed outside the storage space, It is desirable to cool the accommodation space indirectly by circulating the cool air cooled by the exchanger around the accommodation space.

  As described above, according to the refrigerator of the present invention, since the mist is generated by separating the accommodation space and the water to be fogged by the vibrating body, the articles stored in the accommodation space are humidified in a clean state. It is possible to store articles such as fresh foods without reducing the freshness.

The perspective view which shows one Embodiment of the refrigerator of this invention. Sectional drawing of the embodiment. Sectional drawing which expands and shows the principal part of the vegetable compartment of the embodiment. The top view of the metal plate of the embodiment. FIG. 3 is a view corresponding to FIG. 3 showing a modification of the embodiment of the present invention. The schematic diagram which shows the use condition of the modification shown in FIG. FIG. 2 is a view corresponding to FIG. 2 showing a modification of the embodiment of the present invention. FIG. 2 is a view corresponding to FIG. 2 showing another modification of the embodiment of the present invention. Sectional drawing which expands and shows the principal part of the further another modification of embodiment of this invention. The principal part expanded sectional view which shows the modification of the attachment structure of the metal plate in embodiment of this invention. The principal part expanded sectional view which shows the other modification of the attachment structure of the metal plate in embodiment of this invention. The perspective view which shows the structure of the moisture absorption / release film type humidification apparatus of a prior art example. The perspective view which shows the structure of the moisture absorption / release film type humidification apparatus of a prior art example. The perspective view which shows the structure of the discharge type humidification apparatus of a prior art example. The principal part expansion perspective view which shows the electrode structure of the discharge-type humidification apparatus of a prior art example. The principal part expansion perspective view which shows the electrode structure of the discharge-type humidification apparatus of a prior art example. The perspective view which shows the structure of the ultrasonic type humidification apparatus of a prior art example.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description of the embodiment, the mist refers to a liquid that has been made into fine water droplets that are blown or suspended in the air, and the water vapor refers to a colorless and transparent gas formed by evaporation of water. Yes, evaporation means a phenomenon in which liquid evaporates from its surface.

  As shown in FIG. 1, the refrigerator-freezer 100 according to the present embodiment has an inlet opening formed on the front surface, and a main body 2 in which a storage space 1 in which a stored item is stored is formed. The door body 3 is provided so as to be rotatable or slidable with respect to the door 2 and substantially contacts the contact surface formed outside the entrance opening of the main body 2 so as to substantially seal the housing space 1. In this embodiment, the storage space 1 is partitioned from the top in the order of the refrigerator compartment 1a, the vegetable compartment 1b, and the freezer compartment 1c. For the refrigerator compartment 1a, a first door 3a, which is attached by a hinge (not shown) and can be rotated, and for the vegetable compartment 1b, a second door 3b which is formed integrally with the drawer and is slidable is the same. A third door 3c that is formed integrally with the drawer and is slidable is attached to the freezer compartment 1c.

  As shown in FIG. 2, the vegetable compartment 1b is cooled through at least the upper wall 4 and the side wall 5 that form the vegetable compartment 1b, and supplies cold air to the refrigerator compartment 1a. The heat exchanger 6 and the cooling space in which the blower fan 7 is installed are isolated from each other. That is, the heat exchanger 6 and the blower fan 7 are installed in the cooling space outside the vegetable compartment 1b and do not communicate with the vegetable compartment 1b, and are cooled by the heat exchanger 6 from the cooling space. Instead of flowing into the vegetable compartment 1b and cooling, the interior space of the vegetable compartment 1b is indirectly cooled through the wall of the vegetable compartment 1b. In this way, by cooling the room without installing the heat exchanger 6 inside the vegetable room 1b, when the heat exchanger 6 is condensed during the cooling by the heat exchanger 6, the dehumidification state is achieved. It can be avoided.

  And in the opening 8 formed in the upper part of the vegetable compartment 1b, specifically the upper wall 4, the metal plate 11 formed so that many fine holes which comprise the humidification apparatus 10 may penetrate each faceplate part. Is attached. As shown in FIG. 3, the humidifier 10 supplies the metal plate 11 corresponding to the vibrating body according to the claims, the water supply unit 12 that supplies water to the metal plate 11, and the fine holes of the metal plate 11. A water storage unit 13 for storing water, a filter 14 attached to the water supply unit 12, a water stop valve 15 provided at an intermediate position of the water supply unit 12, and drainage for draining water from the water supply unit 12 and the water storage unit 13. A drainage channel 17 to which the valve 16 is attached and an ultrasonic vibration generator 18 that ultrasonically vibrates the metal plate 11 are provided.

  As shown in FIG. 4, the metal plate 11 has, for example, a drive unit 11a in which piezoelectric ceramics are attached to the outer edge of the metal plate 11, and a metal plate 11 in which a number of micro holes driven by the drive unit 11a are formed. The driven portion 11 a is electrically connected to the ultrasonic vibration generating portion 18. Then, when an ultrasonic signal is applied to the drive unit 11a, the metal plate 11 is ultrasonically vibrated by driving the driven unit 11b, and is in contact with the microscopic hole of the driven unit 11b. Water becomes mist and leaves the driven portion 11b and is discharged into the vegetable compartment 1b. This metal plate 11 is a flat plate having a large number of fine holes that open to one face plate portion 11c and also open to the other face plate portion 11d, and drives the opening 8 provided in the upper wall 4 of the vegetable compartment 1b. It is closed and attached by the part 11b. Specifically, such a metal plate 11 is attached so as to close the opening 8 provided in the upper wall 4, that is, so that the spray port 11e exists in the range of 0 to 30 mm from the inner surface of the vegetable compartment 1b. One face plate part 11 c of the metal plate 11 is exposed to the vegetable compartment 1 b, and the other face plate part 11 d is in contact with the water outlet 12 a at the lower end of the water supply part 12. For this reason, the entire other face plate portion 11d of the metal plate 11 is always in contact with the water in the water supply portion 12, and maintenance (replacement of water) is performed between the other face plate portion 11d and the water in the water supply portion 12. In addition to this, no air layer is formed.

  The water supply unit 12 is a pipe that connects the water storage unit 13 and the metal plate 11, and is configured to supply water to the metal plate 11 from above with respect to the metal plate 11. That is, substantially the entire water supply unit 12 is disposed at a position above the metal plate 11, and supplies water to the fine holes of the metal plate 11 by gravity and the weight of water. Therefore, a predetermined water pressure determined by the height at which the water supply part 12 or the water storage part 13 is provided is always applied to the metal plate 11. In the water supply unit 12 of this embodiment, the water storage unit 13 is connected to one end thereof, that is, the water introduction port 12 b, and the water outlet 12 a that is the other end is connected to the metal plate 11. Further, a drainage channel 17 is communicated with in the vicinity of the water outlet 12a. In addition, a filter 14 is attached in the vicinity of the water inlet 12 b of the water supply unit 12, and a water stop valve 15 is provided at a position downstream of the filter 14. The water inlet 12b of the water supply unit 12 is provided at a position higher than the water outlet 12a. Therefore, when the water supply unit 12 is filled with water without an air layer, the water is supplied from the water outlet 12a to the metal plate 11, thereby the other face plate portion 11d of the metal plate 11 and the water outlet 12a. An air layer is not formed with the water in use.

  The water storage part 13 is located above the outside of the vegetable compartment 1b so that water can be supplied to the fine holes of the metal plate 11 by gravity. That is, the water storage unit 13 is provided at the highest position among the components of the humidifying device 10 at a position higher than the water supply unit 12. Therefore, water flows out of the water storage unit 13 and reaches the metal plate 11 through the water supply unit 12. The water storage unit 13, the water supply unit 12, and a later-described drainage channel 17 are in a sealed state when water is put therein.

  The filter 14 filters foreign matter present in the water flowing into the water supply unit 12 from the water storage unit 13. The filter 14 may be any filter as long as it can capture foreign matters having a size that closes the fine holes of the metal plate 11. Specifically, the filter 14 is formed of, for example, an aggregate of materials having fine holes on the surface thereof, such as an aggregate of hollow fibers or carbon fibers, and removes fine dust of 10 μm or more. In the case of this embodiment, since the filter 14 is provided in the vicinity of the water storage unit 13 and below the water storage unit 13, the water passes through the filter 14 by its own weight. By installing the filter 14, even if dust or the like is mixed when water is supplied to the water storage unit 13, it is possible to prevent the metal plate 11 from being clogged by the dust or the like. In addition, it is good also as a structure which allows water to pass through the filter 14 using power means, such as a pump.

  The water stop valve 15 is an electromagnetic valve that adjusts the water pressure applied to the metal plate 11 so as not to exceed, for example, 100 g by opening and closing the valve body in the water supply unit 12. The water stop valve 15 is closed in the humidification mode in which the metal plate 11 is ultrasonically vibrated. Thereby, the water pressure applied to the metal plate 11 can be reduced, and the frequency response of the metal plate 11 when ultrasonic vibration is performed can be ensured. In addition to this solenoid valve, for example, the water stop valve 15 includes a part of the water supply unit 12 made of a durable flexible material such as a flexible tube, such as a silicon tube. However, it may be configured to be clipped from the outside of the flexible material and sandwiched so that the space inside the material is reduced and closed.

  The drainage channel 17 is for periodically opening the drainage valve 16 to discharge the water in the water storage unit 13 and the water supply unit 12 to the outside. The drainage channel 17 is communicated with a space having an evaporating dish (not shown) outside the refrigerator 100. The drainage by the drainage channel 17, that is, the opening operation control of the drainage valve 16 is executed when a predetermined time elapses after the water supply detection means detects that the water storage unit 13 has been supplied with water. For example, the predetermined time set for draining is set to one week, which is a standard for water to rot in the refrigerator 100. When aggressive sterilization means such as an ion generator is used in combination, a predetermined time longer than one week may be set. Further, the predetermined time may be set by the user, or may be configured so that it can be drained by a desired drainage instruction. Examples of the water supply detection means include a means for detecting the weight of water by a mechanical switch, a sensor for detecting a flooded state, a means for detecting a water level by infrared rays, and the like.

  Since the drainage valve 16 is attached to the end of the drainage channel 17, it is possible to prevent intrusion of heat and invasion of foreign matters and germs. The drainage channel 17 is provided with a valve that can be opened and closed in addition to the drainage valve 16 so that the water in the water storage unit 13 and the water supply unit 12 can be discarded through the drainage channel 17 by opening and closing the valve. Good.

  In this embodiment, a humidity sensor 19 that detects the humidity of the vegetable compartment 1b is further installed in the vegetable compartment 1b, and the humidifier 10 is controlled based on the humidity detected by the humidity sensor 19. As a specific control method, a lower limit value and an upper limit value for the actual humidity detected by the humidity sensor 19 are set, and the humidifier 10 is operated until the upper limit value is not exceeded in a state of being below the lower limit value. The humidity in the chamber 1b is adjusted for humidification. Specifically, the humidifying device 10 is activated when a state where the relative humidity is lower than 85% is detected, and the humidifying device 10 is stopped when it is detected that the relative humidity exceeds 90%.

  In such a configuration, when the metal plate 11 is ultrasonically vibrated by being driven by the output of the ultrasonic vibration generating unit 18, a mist composed of water droplets having a small diameter is obtained by passing water while vibrating the fine holes of the metal plate 11. mf is generated. The mist mf has a water droplet diameter of, for example, 5 to 30 μm, and is dry mist (16 μm or less) or close thereto. Therefore, the generated mist mf is more easily evaporated than the mist mf generated in the conventional ultrasonic vibration type humidifier, passes through the spray port 11e, and diffuses into the vegetable compartment 1b. In this case, the mist mf naturally falls and diffuses due to gravity and the cold air in the vegetable compartment 1b. Since water is always supplied from the water storage part 13 to the other face plate part 11d of the metal plate 11 via the water supply part 12, the generation state of the mist mf does not fluctuate. Therefore, the mist mf can be supplied and humidified continuously and stably in the vegetable compartment 1b without excess or deficiency. Moreover, since the metal plate 11 is arrange | positioned in the upper part of the vegetable compartment 1b and the mist mf is naturally dropped and humidified, the ventilation fan for diffusing the mist mf can be abolished.

  Moreover, when the metal plate 11 is ultrasonically vibrated to generate the mist mf and when it is not generated, the water supply unit 12 and the vegetable compartment 1b are separated by the metal plate 11, that is, the water supply unit 12 and the vegetable compartment 1b are not in communication with each other through the air layer. That is, since the metal plate 11 is attached by closing the opening 8 formed in the upper wall 4 of the vegetable compartment 1b, the humidifying device 10, in particular, the water that becomes the mist mf is the internal atmosphere of the vegetable compartment 1b. In isolation. Moreover, since the state where the water outlet 12a of the water supply unit 12 is filled without any gaps is always maintained during use, there is no opportunity for water to come into contact with the internal atmosphere of the vegetable compartment. Therefore, even if various germs and fine foreign matters are floating in the atmosphere of the vegetable room 1b, they are not mixed in water.

  As a result, it is possible to prevent the growth of aerobic bacteria, etc., maintain the water quality when the water is stored in the water storage tank 13, and diffuse bacteria into the vegetable compartment 1b by humidification. This can be reliably suppressed. In addition, since one face plate portion 11c of the metal plate 11 is exposed in the vegetable compartment 1b and directly generates and diffuses the mist mf in the vegetable compartment 1b, a space for generating the mist mf is unnecessary. In addition, it is possible to eliminate the blower fan for sending the mist mf from such a space to the vegetable room 1b.

  Next, a modification of the embodiment will be described.

  The modification shown in FIG. 5 is an example in which an evaporation part 20a is formed in the upper part of the vegetable room 1b, that is, in the vicinity of the ceiling of the vegetable room 1b, and all of the mist mf generated by the humidifying device 10 is evaporated to become water vapor. It is. A configuration different from the above embodiment in this modification will be described below. In the following description, the same components are denoted by the same reference numerals.

  Specifically, the evaporation part 20 is formed by partitioning the upper part of the vegetable compartment 1b with a mesh-like or lattice-like partition member 21. The partition member 21 only needs to be able to prevent food items such as vegetables and fruits from entering the vegetable compartment 1b from entering the evaporation unit 20. The evaporating unit 20 sets a cylindrical space having a diameter of, for example, 30 mm with a spraying direction as a central axis of, for example, 100 mm from a spraying port 11e of the metal plate 11 described later. The evaporation unit 20 does not arrange the components of the refrigerator 100 that become an obstacle to sufficiently diffuse the mist mf. Further, the humidity sensor 19 detects the humidity of the storage unit 20b, which is a space in which food items are stored. Therefore, the humidity sensor 19 is not disposed in the evaporation unit 20a and is positioned below the evaporation unit 20a. And disposed in the accommodating portion 20b where the food is actually accommodated. Thus, by arranging the humidity sensor 19, it is possible to suppress erroneous detection of the humidity of the vegetable compartment 1b and to ensure the responsiveness of the humidification control.

  And in order to diffuse the mist mf in the whole area of the evaporation part 20a with forming the evaporation part 20a, the metal plate 11 is the side wall 5 behind the vegetable compartment 1b facing the divided evaporation part 20a. Attach to the upper part. The attachment of the metal plate 11 is the same as in the above embodiment, and the spray port 11e is attached to the opening 8 provided in the upper part of the side wall 5 behind the vegetable compartment 1b in the direction of the evaporation part 20a. In connection with this, unlike the said embodiment, the water supply part 12 is extended to the position of the drainage channel 17 of the said embodiment. A drainage channel 17 having a drainage valve 1 is connected to the vicinity of the water outlet 12 a of the water supply unit 12.

  According to such a configuration, as shown in FIG. 6, the mist mf generated by the humidifying device 10 and diffused into the evaporation unit 20a has a water droplet size of dry mist as described in the above-described embodiment. Therefore, it evaporates in the evaporating part 20a and becomes water vapor ms from the state of water droplets. For this reason, the mist before being sprayed from the spraying port 11e of the metal plate 11 of the humidifier 10 to become water vapor, that is, water droplets with a small diameter, moves into the container 20b of the vegetable chamber 1b, which is the space to be humidified. And it can prevent adhering as a water droplet to the vegetable v etc. in the accommodating part 20b. Therefore, it can suppress that a water droplet adheres to the accommodated vegetables etc. and induces the decay called water rot.

  The present invention is not limited to the above embodiment.

  The vegetable compartment 1b may be provided in the refrigerator compartment 1a as shown in FIG. 7, for example. In this case, a heat exchanger 6 for cooling the refrigerating room 1a and a cooling air blowing fan 7 are installed in a cooling space 22 that is partitioned from the vegetable room 1b, in other words, not connected to the vegetable room 1b. And the cool air cooled with the heat exchanger 6 may be made to contact the outer wall surface of the vegetable compartment 1b, and the vegetable compartment 1b may be cooled indirectly. In this way, by indirectly cooling the vegetable compartment 1b, the contact between the atmosphere inside the vegetable compartment 1b and the water used for humidification can be blocked, so that the quality of the water used in the humidifier 10 can be reduced. Can be suppressed. In the same figure, the state of the cold which circulates around the outer wall surface of the vegetable compartment 1b is shown by the white arrow.

  Alternatively, the vegetable room 1b includes the humidifying device 10 having the configuration of the above embodiment, and as shown in FIG. 8, the heat exchanger 6 is installed at the rearmost part in contact with the ceiling in the vegetable room 1b. Also good. In this case, the air cooled by the heat exchanger 6, that is, cold air, moves downward from the heat exchanger 6, moves to the door 3b side along the bottom wall of the vegetable compartment 1b, and from the cold air on the door 3b side. Increased by high temperature internal atmosphere. Thus, the vegetable compartment 1b is cooled by generating natural convection of heat in the vegetable compartment 1b using the temperature difference between the internal atmosphere and the cold air. In this way, in the configuration in which the mist mf is diffused into the vegetable compartment 1b by the natural descent from the ceiling of the vegetable compartment 1b and humidified, the cold air from the heat exchanger 6 is naturally convected so that the mist mf moves gently. As a result, it evaporates until reaching the heat exchanger 6 or is cooled while moving so that the temperature difference between the water droplets of the mist mf and the heat exchanger 6 is small. The mf water droplets can be prevented from adhering, that is, the dehumidifying action by the heat exchanger 6 can be suppressed, and the humidifying effect can be maintained.

  Further, as shown in FIG. 9, the mist mf is sprayed from the metal plate 11 into the storage space 4a of the mist mf provided on the upper side of the upper wall 4, and provided on the upper wall 4 forming the bottom surface of the storage space 4a. The structure which supplies the mist mf stored in the storage space 4a to the vegetable compartment 1b from the opening 4b may be sufficient.

  In addition, the metal plate 11 may be attached to be inclined at a predetermined angle from the horizontal or vertical, in addition to the metal plate 11 attached to the horizontal wall or the vertical wall described in the above-described embodiments and modifications. For example, as shown in FIGS. 10 and 11, at the corner formed by the upper wall and the rear wall of the vegetable room, an opening 8 is formed in the inclined wall 22 provided to be inclined at an angle of 45 degrees with respect to each wall. And the metal plate 11 is attached by closing the opening. Even in this case, the metal plate 11 exposes one face plate portion 11c having the spray port 11e to the vegetable compartment, and the entire surface of the other face plate portion 11d is in contact with water stored in the water outlet 12a of the water supply unit 12. In other words, the entire other surface is attached while being kept covered with water without coming into contact with the air layer. In addition, such an inclined wall 22 does not need to be the upper part of the vegetable room as mentioned above, the corner part formed by two side walls, the corner part of an upper wall, a rear wall, and a side wall, a bottom wall And the rear wall, the corner between the lower wall and the rear wall, the corner between the lower wall, the rear wall and the side wall, and the upper wall, the rear wall, the side wall and the lower wall itself. It may be.

  In addition to the circular flat plate composed of the metal plate and the piezoelectric ceramic shown in the above-described embodiments and modifications, the vibrating body is, for example, a solid or hollow substantially hemispherical or substantially hyperboloid. It may be formed in a curved shape. Such a curved vibrating body has a curved surface portion sufficient to close an opening formed in a wall defining a space. In this case, for example, a part of a substantially hemispherical shape or the like may be exposed to the accommodation chamber side from the opening. In addition, when there is a possibility that water leaks from the opening, a water stop material (packing, gasket, etc.) may be appropriately provided between the opening and the vibrating body. Moreover, as a vibrating body, not only a substantially cylindrical fine hole so as to penetrate each face plate portion of the metal plate, but also a part such as a porous material and another part communicate with each other through the fine hole. It may be anything. In short, if water is in contact with only one opening of the micropores, it will not leak out due to surface tension or the like, and will be sprayed to the accommodation space side only after the water particle size is reduced by ultrasonic vibration. What is necessary is just to have such a material and the diameter of a micropore.

  In the said embodiment, although what provided the water storage part 13 was demonstrated, the water supply part 12 may be directly connected to a waterworks. In this case, the water is configured to pass through the filter 14 by the pressure of the water supply.

  The ultrasonic vibration generator 18 may be configured integrally with the metal plate 11.

  In addition, it goes without saying that the present invention can be variously modified without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 100 ... Refrigerator 1 ... Storage space 8 ... Opening 10 ... Humidifier 11 ... Metal plate (vibrating body)
11c ... One face plate part 11d ... The other face plate part 12 ... Water supply part 12a ... Water outlet 12b ... Water inlet 13 ... Water storage part 18 ... Ultrasonic vibration generation Part

Claims (14)

A refrigerator provided with a humidifying device for humidifying the inside of a storage space in which articles are stored,
The humidifier is
A vibrator having a plurality of fine holes;
A water supply unit that is provided outside the housing space and supplies water to the micropores of the vibrator;
An ultrasonic vibration generating unit that ultrasonically vibrates the vibrating body and discharges water from the microscopic holes into the accommodation space;
The vibrator is attached so as to close an opening formed in a wall that defines the accommodation space,
The refrigerator, wherein the water supply unit has a water outlet that contacts the vibrating body, and supplies water so that water contacts the vibrating body without a gap at the water outlet. The vibrator is a metal plate in which a plurality of fine holes are formed so as to penetrate each face plate portion,
The metal plate is attached so that one face plate portion closes an opening formed in a wall defining the accommodation space from the outside,
The refrigerator according to claim 1, wherein the water supply portion is attached so that the water supply port contacts a region facing the opening in the other face plate portion. Provided outside the accommodation space, further comprising a water storage part in which water is stored;
The refrigerator according to claim 1 or 2, wherein the water supply unit is configured to allow water to flow from a water inlet opening to the water storage unit to the water outlet port.   The refrigerator according to any one of claims 1 to 3, wherein the water supply unit is located above the vibrating body.   The refrigerator according to claim 3 or 4, wherein the water storage section is located above the vibrating body.   The refrigerator according to any one of claims 1 to 5, wherein the storage space is divided into a storage section in which the storage object is stored and an evaporation section in which the mist generated by the humidifying device evaporates.   The refrigerator according to any one of claims 1 to 6, wherein the storage space is a vegetable room for storing vegetables, and the vibrator is installed so as to close an opening formed in an upper part of the vegetable room.   The refrigerator according to any one of claims 1 to 7, wherein the water supply unit is provided with a filter for filtering water supplied to the vibrating body.   The refrigerator in any one of Claims 1 thru | or 8 provided with the water stop valve which selectively stops the water supplied to the said vibrating body in the said water supply part.   The refrigerator in any one of Claims 6 thru | or 9 with which the humidity sensor which detects humidity is provided in the said accommodating part.   The refrigerator according to any one of claims 1 to 10, wherein the humidity sensor is configured to start the operation of the ultrasonic vibration generating unit when the humidity in the accommodation space falls below a predetermined humidity.   The said evaporation part is provided above the said accommodating part, a vibration body is attached so that the opening formed in the rear wall which forms the said evaporation part may be plugged, and mist is sprayed in the horizontal direction of the said evaporation part. The refrigerator according to any one of 11.   The refrigerator according to any one of claims 1 to 12, wherein the mist is circulated by cool air in the accommodation space that circulates due to a temperature difference generated in the accommodation space.   A heat exchanger that generates cold air for cooling the housing space is installed outside the housing space, and the cooling air cooled by the heat exchanger is circulated around the housing space to indirectly form the housing space. The refrigerator according to any one of claims 1 to 13, which is cooled.