JP2013064577A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve contact efficiency of odor substances and bacteria generated in a refrigerator and OH radical, in the refrigerator including a sterilizing/deodorizing device.SOLUTION: This refrigerator includes a refrigerating temperature zone compartment and a freezing temperature zone compartment defined in a refrigerator body, a compressor, a cooler, an air blower disposed above the cooler and distributing cold air to the refrigerating temperature zone compartment and the freezing temperature zone compartment, a first damper controlling a supply amount of cold air to the refrigerating temperature zone compartment, a second damper controlling a supply amount of cold air to the freezing temperature zone compartment, and a control device controlling an operation. A cold air flow channel (67) is disposed at an outlet of the first damper for introducing the cold air blown out from the first damper to the refrigerating temperature zone compartment, an ultraviolet ray irradiating means (66) is disposed in the cold air flow channel, the OH radical is generated by making the ultraviolet ray irradiated by the ultraviolet ray irradiating means react with moisture included in the cold air, and the refrigerating temperature zone compartment is sterilized and deodorized by the OH radical.

Description

  The present invention relates to a refrigerator provided with a sterilization deodorization apparatus.

  Since the capacity of refrigerators has been increasing year by year and the amount of food stored in the refrigerator has increased, odors and bacteria are likely to occur. Furthermore, the longer the years the refrigerator is used, the more odors and bacteria accumulate, making it difficult to remove. When odors and bacteria accumulate in the refrigerator, there arises a problem that contamination of newly stored food proceeds. For this reason, many techniques for removing such odors and bacteria have been developed.

  In particular, since radicals such as OH radicals and oxygen radicals are highly reactive, many techniques have been devised for deodorization and sterilization by generating radicals and reacting the radicals with odors and bacteria. Among them, OH radical is a radical generated by excitation of water, and thus has a property of returning to water after the reaction. Therefore, OH radical has an advantage of high safety, and has attracted attention as a method for sterilization and deodorization. However, since the OH radical is very reactive, there is a drawback that it immediately disappears.

  Methods for efficiently reacting OH radicals with odors and bacteria include improving contact efficiency between OH radicals and odors and bacteria, increasing the amount of OH radicals generated, and protecting OH radicals with other substances. For example, a method for extending the service life can be given. As this type of conventional technology, for example, Patent Document 1 is known.

  Patent Document 1 discloses that by applying a high voltage to water and releasing fine pico-level mist and OH radicals and ions, OH radicals are released together with the fine mist, so that the mist protects OH radicals, and OH Radicals have a longer life.

JP 2008-101840 A

  It is thought that the amount of OH radicals floating in the space will increase by extending the lifetime of OH radicals, but even if the lifetime of OH radicals is extended, OH radicals disappear at a level of several seconds. In order to further improve the effect, it is necessary to efficiently contact odorous substances or bacteria with OH radicals.

  In this regard, Patent Document 1 describes the particle size, release method, and structure of the mist, but it is intended to improve the contact efficiency between OH radicals, ions, odorous substances, bacteria, and food stored in the refrigerator. There is no description and there is room for improvement.

  Therefore, the problem to be solved by the present invention is to improve deodorization and sterilization performance in a refrigerator equipped with a sterilization and deodorization device by improving the contact efficiency between odorous substances and bacteria generated in the refrigerator and OH radicals. There is. In addition, increasing the freshness retention effect of fresh food in the refrigerator is one of the problems to be solved by the present invention.

  In order to solve the above-described problems, the present invention provides a refrigeration temperature zone chamber and a freezing temperature zone chamber defined in a refrigerator body, and a compressor installed in a machine room provided behind the refrigeration temperature zone chamber. A cooler installed in a cooler chamber provided behind the freezing temperature zone chamber, and cool air in the refrigerating temperature zone chamber and the freezing temperature zone chamber provided above the cooler in the cooler chamber. A blower that blows air, a first damper that controls the amount of cold air supplied to the refrigeration temperature zone chamber, a second damper that controls the amount of cold air supplied to the refrigeration temperature zone chamber, and a control device that controls operation A cool air flow path for guiding the cool air blown from the first damper to the refrigerated temperature zone chamber is provided at the outlet of the first damper, and ultraviolet irradiation means is disposed in the cool air flow path Irradiated by the ultraviolet irradiation means. Ultraviolet light to generate OH radicals by reacting with the water contained in the cold air, is characterized in that it has a configuration in which the sterilization deodorization of the refrigeration temperature zone compartment by the OH radicals.

  According to the present invention, since the ultraviolet irradiation means is provided in the cool air flow path provided at the outlet of the first damper, OH radicals generated by reacting with the ultraviolet light irradiated by the ultraviolet irradiation means are generated by the first damper. Speed is given by the cold air blown out from, and it can flow into the refrigeration temperature zone vigorously. Therefore, the efficiency with which OH radicals come into contact with odorous substances and bacteria in the refrigerated temperature zone is improved, and the sterilization and deodorization performance is improved.

  In the above configuration, when the control device determines that frost is attached to the cooler, the control device stops the compressor, opens the first damper, and closes the second damper. And controlling to perform a specific operation for driving the blower, and driving the ultraviolet irradiation means during the specific operation to irradiate the cold air in the cold air flow path with ultraviolet rays. .

  If it does in this way, cold air will be heat-exchanged by the frost of a cooler, and since cold air with high humidity will flow in the inside of a cold air flow path, the generation amount of OH radicals can be increased. Further, since the humidity of the cold air is high, drying in the refrigerated temperature zone can be suppressed. Moreover, since heat exchange is performed only with frost without using a compressor, an energy saving effect can be expected.

  In order to determine the state of frost adhering to the cooler, for example, by measuring the number of times the door is opened and closed for a certain period of time, the cumulative operating time of the compressor, the temperature outside the refrigerator, etc. Just guess.

  Further, in the above configuration, a humidity sensor is provided in the vicinity of the ultraviolet irradiation means, and the control device stops the ultraviolet irradiation by the ultraviolet irradiation means when the humidity detected by the humidity sensor is less than 25%. It is preferable to control this. This is because if the humidity of the cold air is less than 25%, the effect of sterilization and deodorization is hardly exhibited.

  Further, in the above configuration, a water retention material is provided in the vicinity of the ultraviolet irradiation means in the cold air flow path so that the ultraviolet light irradiated from the ultraviolet irradiation means faces the water retention material, and the refrigerant flows. It is preferable that the heat pipe is attached so as to be in contact with the water retaining material. If it does in this way, dew condensation will arise on the heat pipe surface by the low-temperature refrigerant | coolant which flows in the inside of a heat pipe, Therefore Even if it does not supply water from the outside, a water retention material can absorb a water | moisture content. And by keeping water | moisture content in a water retention material, the generation amount of OH radical can be increased and disinfection deodorizing performance can be improved.

  In the above configuration, it is preferable that the control device controls the ultraviolet irradiation means to drive and irradiate ultraviolet rays only when the first damper is open. When the first damper is open, OH radicals can be efficiently transferred to the refrigeration temperature zone using the flow rate of the cold air blown from the first damper, but when the first damper is closed, Therefore, even if ultraviolet rays are irradiated during that time, the sterilization and deodorizing effect is not so high. Therefore, as described above, if it is configured to irradiate ultraviolet rays only when the first damper is open, the ultraviolet irradiation means can be driven only when the sterilization and deodorizing effect is high. An energy saving effect can be expected.

  Since this invention is equipped with said structure, the spreading | diffusion of OH radical is accelerated | stimulated and the contact efficiency with the ethylene which generate | occur | produces from vegetables, a smell, and a microbe increases. Therefore, according to this invention, a removal effect can be improved and deterioration of the foodstuff preserve | saved in the refrigerator can be suppressed.

It is a front external view of the refrigerator which concerns on embodiment of this invention. It is XX sectional drawing of FIG. It is a principal part enlarged view which shows the detail of the disinfection deodorizing apparatus shown in FIG. It is a graph which shows the methyl mercaptan residual rate when installing the disinfection deodorizing apparatus shown in FIG. 3 in the different place in the refrigerator which concerns on embodiment of this invention, and drive | operating an apparatus. It is a graph which shows the amount of colon_bacillus | E._coli remaining when the disinfection deodorizing apparatus shown in FIG. 3 is installed in the environment where humidity differs, and is drive | operated.

  An embodiment of a refrigerator according to the present invention will be described with reference to FIGS. As shown in FIG. 1, the refrigerator of the present embodiment includes a refrigerator main body 1, a refrigerator compartment (refrigerated temperature zone chamber) 2, an ice making chamber (freezer temperature zone chamber) 3, an upper freezer compartment (refrigeration temperature zone chamber). 4) A lower freezing room (freezing temperature zone room) 5 and a vegetable room (refrigerated temperature zone room) 6 are provided, a machine room 19 is located behind the vegetable room 6, and a cooler storage room is located behind the lower freezing room 5. (Cooler chamber) 8 is provided and configured. As shown in FIG. 2, a compressor 24 is installed in the machine room 19, and a cooler 7 is installed in the cooler storage room 8. Further, an air blower 9 is provided above the cooler 7, and the cool air is guided to the respective chambers 2, 3, 4, 5 and 6 by the air blower 9.

  In this specification, “cold air” is used to mean “cold air cooled by the cooler 7”. In the present specification, when the ice making chamber 3, the upper freezing chamber 4, and the lower freezing chamber 5 are collectively referred to, they may be collectively referred to as the freezing chamber 60.

  In the refrigerator main body 1, a refrigerator compartment cooling damper (first damper) 20 for controlling the amount of cold air supplied to the refrigerator compartment 2, and a vegetable compartment for controlling the amount of cold air supplied to the vegetable compartment 6. A cooling damper (first damper) 61 and a freezer compartment cooling damper (second damper) 50 for controlling the amount of cold air supplied to the freezer compartment 60 are provided. Further, on the upper surface side of the ceiling wall of the refrigerator main body 1, there is provided a control board (control device) 31 for controlling the operation of the refrigerator and equipped with a CPU, a memory such as a ROM and a RAM, an interface circuit and the like. It has been.

  Incidentally, in this embodiment, isobutane is used as a refrigerant, and the amount of refrigerant enclosed is as small as about 80 g.

  The refrigerating room 2 includes front and rear refrigerating room doors 2a and 2b which are divided into left and right sides, and the ice making room 3, the upper freezing room 4, the lower freezing room 5, and the vegetable room 6 are respectively drawer-type ice making room doors. 3a, an upper freezer compartment door 4a, a lower freezer compartment door 5a, and a vegetable compartment door 6a. Hereinafter, the refrigerator compartment doors 2a and 2b, the ice making compartment door 3a, the upper freezer compartment door 4a, the lower freezer compartment door 5a, and the vegetable compartment door 6a are simply referred to as doors 2a, 2b, 3a, 4a, 5a, and 6a. .

  In the refrigerator of the present embodiment, a door sensor (not shown) that detects the open / closed state of each door of the doors 2a, 2b, 3a, 4a, 5a, 6a, and a state determined to be the door open state for a predetermined time, for example, An alarm (not shown) that informs the user when the operation is continued for one minute or more, a temperature setting device (not shown) that sets the temperature of the refrigerator compartment 2 and the vegetable compartment 6, and the temperature of the freezer compartment 60 are provided.

  As shown in FIG. 2, the outside of the refrigerator body 1 and the inside of the refrigerator are separated by a heat insulating box 10 formed by filling a foam heat insulating material (foamed polyurethane). The heat insulation box 10 of the refrigerator body 1 has a plurality of vacuum heat insulating materials 25 mounted thereon. The inside of the refrigerator is separated from the refrigerator compartment 2 by the heat insulating partition wall 28, the upper freezing chamber 4 and the ice making chamber 3 (see FIG. 1, the ice making chamber 3 is not shown in FIG. 2). The lower freezer compartment 5 and the vegetable compartment 6 are separated.

  A plurality of door pockets 32 are provided on the inner side of the doors 2a and 2b (see FIG. 1). In the refrigerator compartment 2, a plurality of storage spaces are partitioned in the vertical direction by a plurality of shelves 36. The upper freezer compartment 4, the lower freezer compartment 5, and the vegetable compartment 6 are provided with storage containers 3b, 4b, 5b, 6b, respectively, integrally with doors 3a, 4a, 5a, 6a provided in front of the respective compartments. The storage containers 4b, 5b, and 6b can be pulled out by placing a hand on a handle portion (not shown) of the doors 4a, 5a, and 6a and pulling it out to the front side. Similarly, the ice making chamber 3 shown in FIG. 1 is provided with an unillustrated storage container (indicated by (3b) in FIG. 2) integrally with the door 3a. The container 3b can be pulled out by pulling it out.

  In addition, the cold air passes through the refrigerator compartment air duct 11, the upper freezer compartment air duct 12, the cool air duct 13 which is the lower refrigerator compartment air duct, and the ice making chamber air duct (not shown), the refrigerator compartment 2, the upper freezer compartment 4, and the lower compartment. It is sent by a blower 9 to each of the freezing room 5 and the ice making room 3. The amount of cool air supplied to each room (air volume) is controlled by opening and closing the refrigerator compartment cooling damper 20, the vegetable compartment cooling damper 61, and the freezer compartment cooling damper 50.

  The defrost water produced by the frost adhering to the wall of the cooler 7 and its surrounding cooler storage chamber 8 being melted by the defrosting flows into the trough 23 provided at the lower part of the cooler storage chamber 8. It reaches the evaporating dish 21 disposed in the machine room 19 through the drain pipe 62 and is evaporated by the heat generated by the compressor 24 and a condenser (not shown) disposed in the machine room 19.

  A cooler temperature sensor 35 is provided in the upper left portion of the cooler 7 as viewed from the front, the refrigerator compartment 2 is provided with a refrigerator temperature sensor 33, and the lower freezer compartment 5 is provided with a freezer compartment temperature sensor 34. The temperature of the cooler 7 (hereinafter referred to as “cooler temperature”), the temperature of the refrigerator compartment 2 (hereinafter referred to as “refrigerator compartment temperature”), and the temperature of the lower freezer compartment 5 (hereinafter referred to as “freezer compartment temperature”) can be detected. It has become. Furthermore, the refrigerator 1 includes an outside temperature sensor (not shown) that detects the temperature outside the refrigerator. The vegetable compartment 6 is also provided with a vegetable compartment temperature sensor 33a.

  The control board 31 includes the doors of the outside air temperature sensor, the cooler temperature sensor 35, the refrigerator temperature sensor 33, the vegetable room temperature sensor 33a, the freezer temperature sensor 34, and the doors 2a, 2b, 3a, 4a, 5a, and 6a. Connected to the above-described door sensor for detecting the open / closed state of each of the above, a temperature setter (not shown) provided on the inner wall of the refrigerator compartment 2, a temperature setter (not shown) provided on the inner wall of the lower freezer compartment 5, etc. Control of ON / OFF of the compressor 24, control of each actuator (not shown) that individually drives the refrigerator cooling fan 20 and the freezer cooling damper 50, and ON / OFF control of the blower 9 by a preinstalled program And control of rotation speed control, ON / OFF of an alarm for notifying the door open state described above, and the like.

  Here, in the refrigerator of the present embodiment, an energy saving operation mode (specific operation) using frost attached to the cooler 7 is mounted. This energy saving operation mode is intended to cool the refrigerator compartment 2 and the vegetable compartment 6 with cold frost, and the operation method is to stop the compressor 24 and open the refrigerator compartment cooling damper 20 and the vegetable compartment cooling damper 61. The freezer compartment cooling damper 50 is closed and the blower 9 is driven. Specifically, the control board 31 measures the number of times the doors 2a, 2b, 3a, 4a, 5a, and 6a are opened and closed, the accumulated operation time of the compressor 24, the temperature outside the refrigerator detected by the outside air temperature sensor, and the like. When the measured value reaches a predetermined threshold value, the control board 31 determines that frost is attached to the cooler 7 and automatically sets the operation of the refrigerator to the energy saving operation mode. Control to switch to. This energy saving operation mode not only can reduce power consumption, but also generates high-humidity cold air containing frost moisture, so that the food stored in the refrigerator compartment 2 and the vegetable compartment 6 can be dried. There is also an advantage that can be prevented.

  Next, an apparatus 63 for performing sterilization and deodorization of the vegetable compartment 6 will be described with reference to FIGS. 2 and 3. The sterilizing and deodorizing device 63 is disposed immediately below the outlet of the vegetable compartment cooling damper 61 in the vegetable compartment 6, and has a configuration in which a cold air inlet 68 connected to the outlet of the vegetable compartment cooling damper 61 is formed at one end. A cold air passage 67 having a cold air outlet 69 formed at the other end, an ultraviolet irradiation means 66 and a water retaining material 65 disposed so as to be opposed to each other in the cold air passage 67, and the water retaining material 65. The heat pipe 64 is attached so as to come into contact with the refrigerant and flows through the refrigerant.

  The cold air passage 67 is formed by being bent approximately 90 degrees from the cold air inlet 68 to the cold air outlet 69, and the cold air blown downward from the outlet of the vegetable room cooling damper 61 is from the cold air inlet 68. The air is taken in, changed in direction by approximately 90 degrees while flowing in the cold air passage 67, and blown out horizontally from the cold air outlet 69 to circulate in the vegetable compartment 6 (see arrows in FIG. 3). The cold air intake 68 is formed in the same size as the opening of the vegetable room cooling damper 61 so that the cold air does not flow, and the cold air passage 67 is made as short as possible.

  The ultraviolet irradiation means 66 is comprised by LED which encloses an element in glass and generate | occur | produces an ultraviolet-ray. Hereinafter, the ultraviolet irradiation means 66 will be referred to as a glass UVLED 66. Further, as the water retaining material 65, a sponge is used in the present embodiment.

  In the sterilization and deodorization apparatus 63 configured as described above, since the refrigerant flowing in the heat pipe 64 is at a low temperature, condensation is generated on the surface of the heat pipe 64. Since the heat pipe 64 and the water retention material 65 are in contact with each other, dew condensation is absorbed by the water retention material 65. Thus, the water retention material 65 can retain moisture without supplying moisture from the outside. When the water retaining material 65 in which moisture is absorbed is irradiated with ultraviolet rays from the glass UVLED 66, OH radicals are generated. The OH radical is blown into the vegetable compartment 6 together with the cold air, so that the sterilization and deodorization in the vegetable compartment 6 are performed. At this time, since the water retaining material 65 always absorbs the condensation generated on the surface of the heat pipe 64, OH radicals can be generated stably. Therefore, according to the refrigerator of this embodiment, the vegetable compartment 6 can always be sterilized and deodorized.

  Instead of the water retaining material 65, a member that applies ultraviolet light to produce deodorization or antibacterial effects, such as a member coated with a photocatalyst or a filter, may be provided. In addition, when a member that carries odor, bacteria, or the like, for example, a honeycomb-shaped member or cloth, is provided directly below the glass UVLED 66, ultraviolet rays can be efficiently applied, so that the effects of sterilization and deodorization are improved.

  Here, since the compressor 24 is stopped in the energy saving operation mode described above, the refrigerant does not circulate in the heat pipe 64. Then, moisture is not supplied to the water retaining material 65. However, in the energy saving operation mode, since the cold air is at a high humidity due to frost adhering to the cooler 7, it is possible to sufficiently generate OH radicals by irradiating the cold air with ultraviolet rays from the glass UVLED 66. From this, in this embodiment, the control board 31 drives the glass UVLED 66 even in the energy saving operation mode.

  Now, in order to select the optimal place where the sterilization deodorizing apparatus 63 is installed, the present inventors set the sterilization deodorizing apparatus 63 in the vicinity of the cold air outlet of the vegetable room 6 (that is, in the vicinity of the outlet of the vegetable room cooling damper 61). An experiment was conducted to compare the deodorizing performance between the case where the deodorizing performance is installed and the case where it is installed at the cold air return port of the refrigerating chamber 2 (not shown, but provided at the lower end on the back side of the refrigerating chamber 2). This experiment is based on the assumption that odor is generated in the refrigerating chamber 2, and the methyl mercaptan standard gas is introduced from the refrigerating chamber 2, and the remaining amount of methyl mercaptan in the vicinity of the installation position of the sterilization deodorizing device 63 after 10 hours has elapsed. This is done by measuring. The operation of the refrigerator during the experiment is an energy saving operation mode. The graph shown in FIG. 4 is a comparison of the measurement results. 4A shows the methyl mercaptan remaining rate when the sterilization deodorizing device 63 is provided at the cold air return port of the refrigerator compartment 2, and FIG. 4B shows the sterilization deodorizing device 63 near the cold air outlet of the vegetable chamber 6. In this case, the residual ratio of methyl mercaptan is shown.

  As can be seen from FIG. 4, in the energy-saving operation mode, even when odor is introduced from the refrigerator compartment 2, it is removed near the cold air outlet of the vegetable compartment 6 rather than the cold return outlet of the refrigerator compartment 2 near the odor introduction place. The result that the methyl mercaptan residual rate was low when the bacteria deodorizing device 63 was installed. That is, this experiment revealed that the disinfection and deodorization device 63 provided near the outlet of the vegetable room cooling damper 61 has a higher disinfection and deodorization effect. This can be attributed to the fact that the refrigerator according to the present embodiment is provided with the dampers 20, 50, 61 for controlling the cool air discharge.

  Therefore, when the flow rate of the cold air at the outlet of the vegetable room cooling damper 61 and the flow rate of the cold air at the cold air return port of the refrigerator compartment 2 were measured, the flow rate of the cold air in the vicinity of the vegetable room cooling damper 61 was faster. I understood. From this, it is considered that the efficiency at which the generated OH radicals come into contact with the odorous substance is improved and the deodorization performance is improved by increasing the flow rate of the cold air. If this fact is grasped conversely, when the flow rate of the cold air is not sufficient, the sterilization and deodorization performance is inferior. From this, in order to perform sterilization and deodorization efficiently, it became clear that ultraviolet rays should be irradiated from the glass UVLED 66 only when the vegetable room cooling damper 61 is open. Therefore, in the present embodiment, the control substrate 31 drives the glass UVLED 66 only when the vegetable compartment cooling damper 61 is in the open state. As a result, an energy saving effect can be expected.

  Furthermore, in order to investigate the relationship between the humidity of the space and the sterilization effect, the inventors of the present invention keep the humidity of the vegetable room 6 at a predetermined condition, and dispose the sterilization deodorizing device 63 at the outlet of the vegetable room cooling damper 61. The remaining amount of Escherichia coli was measured when the sterilization and deodorization device 63 was operated for 24 hours. The measurement results are shown in FIG. 5 (A) shows the E. coli survival rate in the vegetable room 6 at a humidity of 78%, (B) shows the E. coli survival rate in the vegetable room 6 at a humidity of 25%, and (C) shows the E. coli survival rate in the vegetable room 6 at a humidity of 13%. Respectively. 5D shows the E. coli residual rate when E. coli is exposed for 24 hours without operating the sterilization deodorizing apparatus 63 under the condition of a humidity of 78%.

As can be seen from FIG. 5, the remaining amount of Escherichia coli is as small as 3.0 × 10 ² when the sterilization and deodorizing apparatus 63 is operated under the condition of 78% humidity, and the remaining rate is the ^second lowest with 25% humidity. The condition is 4.3 × 10 ³ , 7.6 × 10 ⁵ when the humidity is 13%, and 8.5 × 10 ⁵ when the sterilization / deodorizing device 63 is not operated. When the sterilization / deodorization device 63 was operated, the sterilization effect was higher. Under the condition of humidity of 13%, the condition where the sterilization / deodorization device 63 was not operated and the remaining amount of E. coli were not different. From this result, it was found that it is desirable to operate the sterilization and deodorization device 63 under high humidity conditions, and it was found that the sterilization effect was not exhibited even when the sterilization and deodorization device 63 was operated under the conditions of less than 25% humidity. .

  Therefore, in the present embodiment, when the humidity is low, the sterilization deodorizing apparatus 66 is controlled not to operate. Therefore, a humidity sensor 70 is provided in the sterilization deodorizing apparatus 63, and the humidity detected by the humidity sensor is 25. If it is less than%, the control substrate 31 is controlled not to operate the glass UVLED 66.

  As described above, the refrigerator according to the present embodiment generates a large amount of condensed water with no water supply without causing high energy to act, and improves the contact efficiency between moisture and ultraviolet rays, thereby increasing the amount of OH radicals. It is possible to generate high deodorization and sterilization effects. Further, in the energy saving operation mode, since cold air with high humidity can be circulated in the refrigerator, the food can be prevented from drying and the freshness can be maintained.

  In the above-described embodiment, the sterilization and deodorization device 63 is provided at the outlet of the vegetable room cooling damper 61. However, instead of or in addition to this configuration, the sterilization and deodorization device is provided at the outlet of the refrigerator compartment cooling damper 20. Even if 63 is provided, the same sterilization deodorizing effect can be exhibited.

1 Refrigerator body 2 Refrigerated room (refrigerated temperature zone)
3 Ice making room (freezing temperature zone)
4 Upper freezer room (freezing temperature room)
5 Lower freezer compartment (freezing temperature zone)
6 Vegetable room (refrigerated temperature room)
7 Cooler 8 Cooler storage room (cooler room)
9 Blower 19 Machine room 20 Refrigerating room cooling damper (first damper)
24 Compressor 31 Control board (control device)
50 Freezer compartment cooling damper (second damper)
61 Vegetable room cooling damper (first damper)
63 Decontamination device 64 Heat pipe 65 Water retention material 66 Glass UVLED (ultraviolet irradiation means)
67 Cold air flow path 68 Cold air intake port 69 Cold air outlet port 70 Humidity sensor

Claims (5)

Refrigerated temperature zone chamber and refrigeration temperature zone chamber defined in the refrigerator body, a compressor installed in a machine room provided behind the refrigerated temperature zone chamber, and provided behind the refrigeration temperature zone chamber A cooler installed in a cooler chamber, a blower that is provided above the cooler in the cooler chamber and blows cool air to the refrigeration temperature zone chamber and the refrigeration temperature zone chamber, and to the refrigeration temperature zone chamber In a refrigerator comprising: a first damper that controls a supply amount of cold air; a second damper that controls a supply amount of cold air to the refrigeration temperature zone; and a control device that controls operation.
A cold air flow path is provided at the outlet of the first damper to guide the cold air blown out from the first damper to the refrigerated temperature zone, and ultraviolet irradiation means is disposed in the cold air flow path,
A refrigerator characterized in that ultraviolet rays irradiated by the ultraviolet irradiation means react with moisture contained in cold air to generate OH radicals, and the sterilization deodorization of the refrigerated temperature zone is performed by the OH radicals. . In claim 1,
When it is determined that frost is attached to the cooler, the control device stops the compressor, opens the first damper, closes the second damper, and drives the blower. A refrigerator that is controlled to perform a specific operation and that irradiates ultraviolet light to the cold air in the cold air flow path by driving the ultraviolet irradiation means during the specific operation. In claim 2,
A humidity sensor is provided in the vicinity of the ultraviolet irradiation means, and the control device controls to stop the ultraviolet irradiation by the ultraviolet irradiation means when the humidity detected by the humidity sensor is less than 25%. Refrigerator. In claim 1 or 2,
A water retention material is provided at a position near the ultraviolet irradiation means in the cold air flow path
The ultraviolet rays emitted from the ultraviolet irradiation means are configured to face the water retaining material,
A refrigerator, wherein a heat pipe through which a refrigerant flows is attached so as to contact the water retention material. In claim 1 or 2,
The refrigerator, wherein the control device controls the ultraviolet irradiation means to drive and irradiate ultraviolet rays only when the first damper is open.