JP2019052777A - Refrigerator - Google Patents

Abstract

To provide a refrigerator capable of sterilizing the inside of a refrigerator body.SOLUTION: A refrigerator 10 can operate in a sterilization mode. The refrigerator 10 includes: a box-shaped refrigerator body 20; an inner fan 100 for circulating cool air generated by a cooler 82 provided inside the refrigerator body 20 in the refrigerator body 20; a heater 84 for increasing the temperature inside the refrigerator body 20; a first valve 52 for cutting off or opening the ventilation of the outside air to the inside of the refrigerator body 20; a ventilation port 36 provided opening inside the refrigerator body 20, and for ventilating inside air to the outside from the inside of the refrigerator body 20; and a second valve 40 capable of cutting off or opening the ventilation of the inside air from the ventilation port 36 to the outside. In the sterilization mode, the heater 84 and the inner fan 100 are operating in a state where the first valve 52 and the second valve 40 are closed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a refrigerator.

  Conventionally, the thing of patent document 1 is known as a refrigerator, for example. Patent Document 1 describes a configuration including a cleaning mode for cleaning the cooling chamber of the refrigerator and a drying mode for drying the cleaned cooling chamber. After washing in the cooling chamber, the bacteria are prevented from growing in the cooling chamber by reliably drying in the drying mode.

JP 2017-26264 A

  In the above configuration, even if the cooling chamber is dried in the drying mode, the temperature in the cooling chamber generally does not reach the sterilization temperature (generally 80 degrees) in the drying mode. .

  This invention is completed based on the above situations, Comprising: It aims at providing the refrigerator which can perform sterilization in a cooling chamber reliably.

In order to solve the above problems, the refrigerator of the present invention is a refrigerator that can be operated in the sterilization mode, and includes a box-shaped refrigerator main body and a cooler provided inside the refrigerator main body. An internal fan that circulates the generated cold air inside the cooler body, a heater that raises the temperature inside the cooler body, and the ventilation of outside air into the cooler body is blocked or opened. A first valve capable of opening, a vent opening provided in the interior of the refrigerator main body, venting the inside air from the inside of the refrigerator main body to the outside, and venting of the inside air from the vent opening to the outside A second valve that can be shut off or opened, and in the sterilization mode, the heater and the internal fan operate in a state in which the first valve and the second valve are closed. .
When the temperature inside the cooler body is raised by the heater, the heat inside the cooler body can be prevented from escaping to the outside by closing the first valve and the second valve. Thereby, the temperature inside the refrigerator main body can be raised to the sterilization temperature, and sterilization can be performed.

Further, a blower fan provided outside the cooling body, a water storage tank provided outside the cooling body, an opening provided in a bottom wall of the cooling body, and the inside of the water storage tank A water passage opening through which the water inside the refrigerator main body can be passed to the water storage tank, and the water passage blows air from the blower fan through the water storage tank. It can be set as the structure which can be ventilated.
Since the air blown from the blower fan flows through the inside of the water storage tank and is ventilated, the inside of the cooling body and the inside of the water storage tank can be dried.

Moreover, the said vent hole shall be provided downstream of the said internal fan.
Since the vent opening that opens inside the refrigerator main body is arranged downstream of the internal fan, in the drying mode that dries the inside of the internal cooler body, the internal fan is blown to the outside of the internal air of the refrigerator main body. The ventilation efficiency can be improved, and the drying efficiency can be improved.

Further, the heater is a defrosting mode for removing frost attached to the cooler, the defrosting heater operating with the first valve and the second valve being closed, and the cooling body main body. A drying mode in which the interior is dried, and a drying heater that operates with the first valve and the second valve being opened separately. In the sterilization mode, the defrosting heater and the drying Both heaters can be operated.
By operating both the defrosting heater and the drying heater, it is possible to shorten the time required to raise the temperature inside the refrigerator main body as compared to the case where either one is activated to raise the temperature.

  ADVANTAGE OF THE INVENTION According to this invention, the refrigerator which can disinfect the inside of a refrigerator main body can be provided.

Side sectional view of the refrigerator according to the embodiment Enlarged view near the draining board in FIG. Side sectional view of the refrigerator showing the arrangement of the first injection unit in a state where the internal fan cover and the internal fan are removed. Cross-sectional side view of the refrigerator showing the arrangement of the heaters attached to the cooler Illustration of ventilation path from side view Front view of the refrigerator with the door open Sectional drawing which shows arrangement | positioning of the 1st injection part from a front view Top view of the refrigerator Partial cutaway plan view of the bottom wall with the ceiling wall of the refrigerator viewed from above Left side view of the first injection unit The enlarged view of the 1st nozzle of the 1st injection part, and the 2nd nozzle The perspective view of the 2nd injection part Perspective view of cross board and drain strainer Perspective view of check valve Top view of water tank Rear view of water tank

  The refrigerator 10 of this embodiment is demonstrated referring FIGS. 1-16. In the following description, the X direction in FIG. 1 is the front, the Z direction is the upward, and the Y direction in FIG. 6 is the right.

  The cooler 10 is a rapid cooler that cools hot food after cooking in a short time, and is attached to the cooler body 20 and the opening of the cooler body 20 so as to be openable and closable as shown in FIG. A door 70, a machine room 170 provided below the cooler body 20, and a water storage tank 150 provided between the cooler body 20 and the machine room 170.

  The refrigerator main body 20 is made of a heat insulating box, and as shown in FIGS. 1 and 6, the upper ceiling wall 22, the lower bottom wall 26, and between the side edges of the ceiling wall 22 and the bottom wall 26. Are formed of a pair of side walls 34 and a rear wall 42 connecting the rear edges of the ceiling wall 22 and the bottom wall 26. As shown in FIG. 8, a control box 60 is disposed on the top surface of the ceiling wall 22 of the refrigerator main body 20, and performs various controls relating to the cleaning operation and the like. Although not shown, the cooler 10 is also provided with a control box for performing various controls relating to the cooling operation and the like.

  As shown in FIG. 6, a cooler case 80 having a box shape is fixed near the left side wall 34 inside the cooler body 20. The cooler case 80 is open on both sides. As shown in FIG. 3, a cooler 82 is accommodated in the cooler case 80. The cooler 82 is a so-called evaporator, and is arranged so as to pass through a plurality of plate-like fins arranged in the front-rear direction at a predetermined interval and the plurality of plate-like fins, and is folded back in multiples. And a refrigerant pipe having a different shape. When the compressed and condensed refrigerant passes through the inside of the refrigerant pipe of the cooler 82, the refrigerant is vaporized to take away the surrounding heat, and the air around the cooler 82 is cooled. The refrigerant is compressed and condensed by a compressor and a condenser in the machine room 170. The refrigerant that has passed through the cooler 82 is returned again to the compressor to constitute a refrigeration cycle. In addition, the right side of the cooler case 80 is a storage chamber 37 in which a mounting shelf 35 on which a tray for storing food is placed is disposed.

  As shown in FIG. 4, a heater 84 is attached to the cooler 82. The heater 84 includes a drying heater 86 disposed on the upper side and a defrosting heater 88 disposed on the lower side.

  As shown in FIG. 4, the drying heater 86 has a shape in which an electric heating rod that generates heat by energization is bent once. The defrosting heater 88 has a shape in which the electric heating rod is repeatedly bent repeatedly. The defrosting heater 88 includes an upper first defrosting heater 90 and a lower second defrosting heater 92.

  As shown in FIG. 1, two internal fans 100 are provided on the right side of the cooler 82 in the vertical direction. The cooler case 80 is provided with an internal fan cover 102 so as to cover the internal fan 100 from the side opposite to the cooler 82. The internal fan cover 102 includes a cover body portion 104 that has a plate shape, and two ventilation openings 106 that are opened to the cover body portion 104. The two ventilation openings 106 have a lattice shape and are respectively provided at positions corresponding to the two internal fans 100. When the internal fan 100 is actuated, wind is blown from the storage chamber 37 of the cooler body 20 through the vent 106 to the cooler 82.

  As shown in FIG. 4, an in-chamber exhaust pipe 38 is inserted through the upper part of the rear wall 42 of the cooler body 20 and the upper part of the rear surface of the cooler case 80. The opening at the other end of the internal exhaust pipe 38 is a vent 36 for venting the internal air of the cooling body 20 to the outside. The vent 36 is located downstream of the internal fan 100 where the wind pressure is high. Thereby, the ventilation | gas_flowing efficiency to the exterior of the inside of the refrigerator main body 20 goes up, and the drying efficiency at the time of drying the inside of the refrigerator main body 20 improves. The other end of the internal exhaust pipe 38 is connected to a second valve 40 provided outside the cooling body 20.

  As shown in FIG. 3, a first injection unit 110 is provided between the internal fan 100 and the cooler 82. The first injection unit 110 has a shape in which a long and narrow tube is bent a plurality of times and can inject a cleaning liquid at a predetermined position. It has been. As shown in FIG. 10, the first injection unit 110 extends in the direction from the rear to the front, the upper injection unit 112 that passes through the upper part of the upper internal fan 100, and the direction from the front to the rear. A middle stage injection unit 116 that passes between the upper and lower internal fans 100 and a lower stage injection unit 120 that extends from the rear toward the front and passes through the lower part of the lower internal fan 100 are provided. The upper injection unit 112 and the middle injection unit 116 are connected by an upper connection unit 114, and the middle injection unit 116 and the lower injection unit 120 are connected by a lower connection unit 118. The first injection unit 110 is provided with a first nozzle 122 and a second nozzle 124.

  As shown in FIG. 7, the first nozzle 122 protrudes toward the cooler 82. As shown in FIGS. 3 and 10, two first nozzles 122 are provided in the upper stage injection unit 112 and two in the middle stage injection unit 116. As shown in FIG. 3, the second nozzle 124 is provided on the surface on the side of the internal fan cover 102 of the first injection unit 110 so as to open at a predetermined interval. As shown in FIG. 1, the first nozzle 122 and the second nozzle 124 are arranged outside the internal fan 100 in plan view. When the cleaning liquid flows in the first injection unit 110, the first nozzle 122 injects the cleaning liquid toward the cooler 82, and the second nozzle 124 injects the cleaning liquid toward the internal fan cover 102. The cleaning liquid sprayed from the first nozzle 122 cleans the cooler 82 and cleans the back side of the internal fan cover 102 with the splashed water. The second nozzle 124 cleans the back side of the internal fan cover 102.

  As shown in FIG. 7, a second injection unit 130 is provided at the center of the ceiling wall 22 of the cooling body 20. The second injection unit 130 is a so-called rotating nozzle that rotates and injects the cleaning liquid, and has a rotating shaft 132 that protrudes downward from the ceiling wall 22 and a first extending from the rotating shaft 132 in one direction intersecting the axial direction. One pipe 134 and a second pipe 138 extending from the rotating shaft 132 in a direction opposite to one direction are provided. As a result, the first pipe 134 and the second pipe 138 rotate in a plane parallel to the ceiling wall 22.

  A horizontal nozzle 136 is provided at the tip of the first pipe 134 as shown in FIG. A vertical nozzle 140 is provided at the tip of the second pipe 138. The second pipe 138 has a shape in which the tip is bent obliquely downward. A branch pipe 142 projects downward from the second pipe 138. A lower injection nozzle 144 is provided at the tip of the branch pipe 142.

  The nozzle hole of the vertical nozzle 140 has a long hole shape in the vertical direction which is a direction (here, the vertical direction) perpendicular to the plane direction (here, the horizontal direction) parallel to the ceiling wall 22, and allows the cleaning liquid to flow in the vertical direction. Can be sprayed into a fan shape. The nozzle holes of the horizontal nozzle 136 have a long hole shape that is long in the horizontal direction, and the cleaning liquid can be sprayed in a fan shape along the horizontal direction. The nozzle hole of the lower injection nozzle 144 has a long slot shape in a direction parallel to the direction in which the second pipe 138 extends, and the cleaning liquid can be sprayed downward in a fan shape. Thereby, since the vertical nozzle 140 injects in a fan shape in the vertical direction, the area per unit time that the cleaning liquid hits the inner surface of the cooling body 20 can be increased as compared with the case of injecting in the horizontal direction. it can. Further, since the horizontal nozzle 136 sprays in a fan shape in the plane direction, water easily enters the back side of the obstacle such as the cooler 82. Further, the bottom wall 26 is cleaned by the lower spray nozzle 144.

  The rotation direction of the rotation shaft 132 of the second injection unit 130 is such that the horizontal nozzle 136 and the vertical nozzle 140 rotate in the direction from the rear to the front of the cooler 82 (hereinafter referred to as “forward rotation”). For example, when the second injection unit 130 is rotated in the reverse direction, the cleaning liquid injected from the vertical nozzle 140 is injected from the rear toward the front end of the right side wall 34 of the cooler body 20 of the cooler 82. Water leaks easily from the inside of the main body 20. On the other hand, in the case of normal rotation, the cleaning liquid sprayed from the vertical nozzle 140 is sprayed from the rear toward the front end of the left side wall 34 where the cooler 82 is located, but the cooler 82 serves as a wall. Water leakage from the inside 20 can be prevented. If the cooler case 80 is provided in the vicinity of the right side wall 34, the second injection unit 130 is rotated in the direction opposite to that of the present embodiment.

  The door 70 can be opened and closed from the right side. As shown in FIGS. 1 and 9, the door 70 includes a plate-like door main body 72, a door packing 74, and a draining plate 76. The door packing 74 has a frame shape and is fixed to the rear surface of the door main body 72. When the door 70 is closed, the door packing 74 is in contact with the opening edge of the cooling body 20, thereby preventing water leakage from the inside of the cooling body 20.

  The draining plate 76 is fixed to the rear surface of the door main body 72 and has a long plate shape along the width direction (left-right direction) of the door main body 72. As shown in FIG. 2, the draining plate 76 is disposed on the upper part of the lower frame of the door packing 74 and protrudes toward the bottom wall 26. The angle between the protruding surface of the draining plate 76 and the rear surface of the door main body 72 is approximately 120 degrees. As a result, water (cleaning liquid) adhering to the rear surface of the door main body 72 can be returned to the inside of the cabinet, so that water is collected in the lower frame portion of the door packing 74 of the door 70 and water leakage from the door 70 is prevented. it can.

  As shown in FIG. 3, the bottom wall 26 of the refrigerator main body 20 is inclined downwardly in a mortar shape toward the center. In the center of the bottom wall 26, a water inlet 28 is opened. As shown in FIG. 9, the water passage 28 is provided with a cross plate 30 having a cross shape. By providing the cross plate 30, even if a large amount of water flows through the water flow port 28, it is possible to prevent the water from becoming a vortex and improve the water flow efficiency. A drain strainer 32 is provided below the cross plate 30 to remove dust contained in the water that is passed through the water passage 28 as shown in FIG.

  As shown in FIGS. 1 and 6, the water storage tank 150 has a box shape, and the water storage tank 150 is provided with a tank lid 166 at the top opening. As shown in FIG. 15, the tank lid 166 is provided with an internal connection port 168 that is open. As shown in FIG. 3, the internal connection port 168 is disposed below the water flow port 28 of the bottom wall 26, and the internal space of the internal connection port 168 and the water flow port 28 communicate with each other. When water flows into the water passage 28, the water is stored in the water storage tank 150 through the internal connection port 168 of the water storage tank 150.

  As shown in FIG. 6, on the front surface of the water storage tank 150, a level sensor 158 that measures the water level inside the water storage tank 150, a thermistor 162 that measures the temperature inside the water storage tank 150, and the cleaning liquid stored in the water storage tank 150 And an in-tank heater 160 is provided.

  As shown in FIG. 16, on the bottom surface of the water storage tank 150, there are a left first opening 152 as a ventilation structure, a central second opening 154, and a right pump water supply port 156 so as to face the bottom surface. Each opening is provided. As shown in FIG. 1, a cylindrical overflow pipe 164 protrudes from the opening edge of the second opening 154 toward the upper part.

  As shown in FIGS. 1 and 5, a drain valve 174 is provided below the water storage tank 150. The first opening 152 and the upstream side of the drain valve 174 are connected via a drain valve connecting pipe 172. The water flowing from the first opening 152 flows downstream when the drain valve 174 is open, and is prevented from flowing downstream when the drain valve 174 is closed. The downstream side of the drain valve 174 is connected to one end of the first T-shaped branch pipe 178.

  The second opening 154 and the central branch end of the first T-shaped branch pipe 178 are connected via an overflow connection pipe 176 as shown in FIGS. Thereby, when the water level of the water storage tank 150 becomes a certain level or more with the drain valve 174 closed, the overflow from the overflow pipe 164 is prevented, so that the cleaning liquid in the water storage tank 150 is prevented from overflowing.

  The other end of the first T-shaped branch pipe 178 is connected to the branch end portion of the second T-shaped branch pipe 180 as shown in FIGS. One end of the second T-shaped branch pipe 180 is connected to the upstream side of a check valve 182 provided below. The downstream side of the check valve 182 is connected to the drain hose 184. The check valve 182 flows the water flowing from the upstream water storage tank 150 to the downstream and prevents the water from flowing back from the downstream. Further, the check valve 182 prevents the inside air from flowing out from the upstream and the outside air from flowing in from the downstream.

  The other end of the second T-shaped branch pipe 180 is connected to one end of a blower blower pipe 186 as shown in FIGS. The other end of the blower blower pipe 186 is connected to the downstream side of the first valve 52 provided on the upper surface of the ceiling wall 22. The upstream side of the first valve 52 is arranged downstream of the blower opening of the blower fan 50.

  As shown in FIG. 6, a pump 190 is provided inside the machine room 170. The pump 190 is located below the water storage tank 150. The pump water supply port 156 of the water storage tank 150 and the input side of the pump 190 are connected via a pump connection pipe 188. The output side of the pump 190 is connected to one end of the cleaning liquid pressure feeding pipe 192. The cleaning liquid pressure feeding pipe 192 is routed from the output side of the pump 190 to the upper surface of the ceiling wall 22. The other end of the cleaning liquid pressure feeding pipe 192 is connected to one end of a third T-shaped branch pipe 194 as shown in FIG. The other end of the third T-shaped branch pipe 194 is connected to the second injection unit 130, and the branch end of the third T-shaped branch pipe 194 is connected to the first injection unit 110. When the pump 190 is activated, the cleaning liquid stored in the water storage tank 150 is pumped to the first injection unit 110 and the second injection unit 130 through the cleaning liquid pressure feeding pipe 192.

  As shown in FIG. 8, a water supply unit 24 that supplies the cleaning liquid is provided on the upper surface of the ceiling wall 22. Although not shown, a water supply hole (not shown) is provided below the water supply unit 24 of the ceiling wall 22, and the cleaning liquid is supplied into the inside of the refrigerator main body 20 through the water supply hole. The cleaning liquid is supplied from the water supply unit 24, and the cleaning liquid sprayed for cleaning flows into the water inlet 28 of the bottom wall 26 and is stored in the water storage tank 150.

  The operation modes of the refrigerator 10 include a cooling mode, a defrosting mode, a preliminary cleaning mode, a cleaning mode, a rinsing mode, a drying mode, and a sterilization mode. When each operation mode is executed, various operation controls are performed by the control means provided in the control box 60 related to the cleaning operation and the control box related to the cooling operation (not shown).

  The cooling mode is an operation mode for cooling the inside of the refrigerator main body 20. In the cooling mode, the cooler 82 and the internal fan 100 operate. When the internal fan 100 blows air toward the cooler 82, the cool air generated by the cooler 82 circulates inside the cooler body 20. In the cooling mode, the first valve 52 and the second valve 40 are closed to prevent cold air from flowing to the outside. Further, the drain valve 174 is open.

  When the drain valve 174 is opened in the cooling mode, the water adhering to the inside of the refrigerator main body 20 due to cooling flows from the water inlet 28 to the water storage tank 150. Further, the water flowing into the water storage tank 150 passes through the check valve 182 from the first opening 152 of the water storage tank 150 and flows into the drain hose 184 to be drained. Further, the check valve 182 prevents the cool air inside the cooler body 20 from flowing from the drainage hose 184 to the outside, and prevents the outside air from flowing into the cooler body 20.

  The defrosting mode is an operation mode for removing frost attached to the cooler 82, and can be executed when the temperature inside the refrigerator main body 20 satisfies a condition equal to or lower than a predetermined temperature during operation in the cooling mode. It has become. During operation in the defrost mode, the refrigeration cycle is stopped. In the defrost mode, the defrost heater 88 is operated, and the frost attached to the cooler 82 is melted by the heat of the defrost heater 88. In the defrost mode, as in the cooling mode, the first valve 52 and the second valve 40 are closed, and the drain valve 174 is open. The frost melted by the defrosting is drained from the drain hose 184 via the water storage tank 150 and the check valve 182.

  The preliminary cleaning mode is a mode for cleaning the inside of the water storage tank 150, and is executed before the cleaning mode described later. By executing the preliminary cleaning mode, oil stains and the like adhering to the inside of the water storage tank 150 can be removed before the cleaning mode, and oil stains and the like can be prevented from being mixed with the cleaning liquid. In the preliminary cleaning mode, the second valve 40, the first valve 52, and the drain valve 174 are closed. The preliminary cleaning mode is executed by the following steps. In the first step, the cleaning liquid is supplied from the water supply unit 24 to the inside of the cooling body 20, and further stored in the water storage tank 150 from the water passage port 28. Water is stored in the water storage tank 150 until a predetermined water level is reached. In the second step, the drain valve 174 is opened to drain the cleaning liquid.

  The cleaning mode is an operation mode in which the inside of the refrigerator main body 20 is cleaned with a cleaning liquid. In the cleaning mode, the internal fan 100 operates. At the start of operation in the cleaning mode, the first valve 52, the second valve 40, and the drain valve 174 are closed. The cleaning mode is executed by the following steps. In the first step, the cleaning liquid is supplied from the water supply unit 24 to the inside of the cooling body 20, and further stored in the water storage tank 150 from the water passage port 28. In the second step, the stored cleaning liquid is heated by the in-tank heater 160 until a predetermined temperature is reached. In the third step, the cleaning liquid is pumped from the pump 190 to the first injection unit 110 and the second injection unit 130. In the fourth step, the cleaning liquid is ejected from each nozzle of the first ejection unit 110 and the second ejection unit 130. In the fifth step, the sprayed cleaning liquid is stored in the water storage tank 150 from the water flow port 28, and then returns to the second step to perform the circulation operation. In the sixth step, after a predetermined time has elapsed, the cleaning operation is stopped, and the drain valve 174 is opened to drain the cleaning liquid.

  In the cleaning mode, if the water level of the water storage tank 150 falls below a certain level due to water leakage or the like, the cleaning operation cannot be performed normally. However, it is lacking in usability to immediately stop the cleaning operation in such a case. Therefore, the cleaning mode includes a first water level recovery mode that attempts to recover the water level of the water storage tank 150 and a second water level recovery mode. In the cleaning mode, either the first water level recovery mode or the second water level recovery mode is selectively executed by the user.

  The first water level recovery mode is executed by the following steps. In the first step, the water level of the water storage tank 150 is monitored, and when the water level of the water storage tank 150 is equal to or lower than a predetermined threshold (referred to as “threshold X”), the pump 190 is stopped and the cleaning operation is temporarily stopped. In the second step, a predetermined time is waited after the suspension of the cleaning operation. As a result, the cleaning liquid inside the refrigerator main body 20 flows from the water inlet 28 to the water storage tank 150, and the water level in the water storage tank 150 is recovered by a certain amount. In the third step, when the water level of the water storage tank 150 is equal to or higher than a predetermined threshold (referred to as “threshold Y”), the cleaning liquid is supplied from the water supply unit 24 to the water storage tank 150. Here, when the water level of the water storage tank 150 is equal to or less than the threshold value Y, the cleaning operation is stopped. In the fourth step, the pump 190 is operated and the cleaning operation is restarted.

  The second water level recovery mode is executed by the following steps. In the first step, the water level of the water storage tank 150 is monitored, and when the water level of the water storage tank 150 is equal to or lower than a predetermined threshold (referred to as “threshold X”), the pump 190 is stopped and the cleaning operation is temporarily stopped. In the second step, the cleaning liquid is supplied from the water supply unit 24 to the water storage tank 150. In the third step, the pump 190 is operated and the cleaning operation is restarted. In the fourth step, after the cleaning operation is resumed, if the cleaning operation is stopped again in the first step, the number of times is counted. In the fifth step, when the number of times counted in the fourth step is a predetermined number or more, the cleaning operation is stopped.

  The rinsing mode is an operation mode that is executed after the cleaning mode and rinses the cleaning liquid adhering to the inside of the refrigerator main body 20 with the cleaning mode with water. At the start of the operation in the rinse mode, the first valve 52, the second valve 40, and the drain valve 174 are closed. The rinse mode is executed by the following steps. In the first step, water is supplied from the water supply unit 24 to the inside of the cooling body 20, and water reaching the bottom wall 26 of the cooling body 20 is passed from the water inlet 28 to the water storage tank 150 to be stored in the water storage tank 150. To store water. In the second step, water is pumped from the pump 190 to the first injection unit 110 and the second injection unit 130. In the third step, water is ejected from each nozzle of the first ejection unit 110 and the second ejection unit 130. In the fourth step, the jetted water is stored in the water storage tank 150 from the water inlet 28, and returns to the second step and is circulated. In the fifth step, the drain valve 174 is opened to drain the water. In the sixth step, the first to fifth steps are executed again, and a second rinse is performed.

  The drying mode is an operation mode in which the inside of the refrigerator main body 20 and the inside of the water storage tank 150 are dried, and is executed after the rinsing mode. In the drying mode, the internal fan 100, the blower fan 50, and the drying heater 86 are operating. In the dry mode, the first valve 52, the second valve 40, and the drain valve 174 are open.

  In the drying mode, the air blown from the blower fan 50 is vented to the inside of the water storage tank 150 from the first opening 152 and the second opening 154 through the blower blower pipe 186. The air blown from the blower fan 50 that has been ventilated inside the water storage tank 150 is ventilated from the water inlet 28 into the inside of the refrigerator main body 20. Inside the refrigerator main body 20, the internal fan 100 is operating, and the internal air of the cooler main body 20 flows downstream from the internal fan 100 and is vented to the outside through the vent 36. Thus, since the air blown from the blower fan 50 is ventilated to the cooler main body 20 via the water storage tank 150, the inside of the water storage tank 150 and the inside of the cooler main body 20 are dried.

  The sterilization mode is an operation mode in which the inside of the refrigerator main body 20 is raised to the sterilization temperature (generally 80 degrees) and the inside of the refrigerator main body 20 is sterilized, and is executed after the drying mode. In the sterilization mode, the first valve 52 and the second valve 40 are closed, and the drain valve 174 is open. In the sterilization mode, the internal fan 100 and both the drying heater 86 and the defrosting heater 88 are operating. Thus, in order to operate both the drying heater 86 and the defrosting heater 88 in a state where both the first valve 52 and the second valve 40 are closed, the temperature inside the cooling body 20 is set to the sterilization temperature. Can be raised. Further, the sterilization mode is executed in a state where the temperature inside the refrigerator main body 20 is raised by the drying heater 86 in the drying mode executed first, so that the sterilization mode is not performed without executing the drying mode. Compared with the case of executing the above, the time and power required for the temperature rise can be suppressed.

According to this embodiment, the following operations and effects are achieved.
The cooler 10 is a cooler 10 that can be operated in a sterilization mode, and cools cold air generated by a box-shaped cooler main body 20 and a cooler 82 provided inside the cooler main body 20. The internal fan 100 that circulates inside the storage body 20, the heater 84 that raises the temperature inside the cooling body 20, and the first passage that can block or open the ventilation of outside air into the cooling body 20. A valve 52 is provided in the interior of the refrigerator main body 20 so as to open, and a vent 36 for venting the inside air from the inside of the refrigerator main body 20 to the outside, and the ventilation of the inside air from the vent 36 to the outside are blocked or opened. In the sterilization mode, the heater 84 and the internal fan 100 are operated with the first valve 52 and the second valve 40 closed.
According to the present embodiment, when the temperature inside the cooler body 20 is raised by the heater 84, the heat inside the cooler body 20 escapes to the outside by closing the first valve 52 and the second valve 40. Can be prevented. Thereby, the temperature inside the refrigerator main body 20 can be raised to the sterilization temperature, and sterilization can be performed.

Also, a blower fan 50 provided outside the cooling body 20, a water storage tank 150 provided outside the cooling body 20, and an opening provided in the bottom wall 24 of the cooling body 20, the water storage tank 150 And a water passage 28 through which water inside the refrigerator main body 20 can be passed to the water storage tank 150. The water passage 28 sends air from the blower fan 50 via the water storage tank 150. It can be set as the structure which can ventilate to the refrigerator main body 20. FIG.
The air blown from the blower fan 50 flows through the inside of the water storage tank 150 into the cooling body 20 and is ventilated, so that the inside of the cooling body 20 and the inside of the water storage tank 150 can be dried.

The vent 36 is provided downstream of the internal fan 100.
Since the air vent 36 opened inside the refrigerator main body 20 is arranged downstream of the internal fan 100, the cooler main body is blown by the internal fan 100 in the drying mode in which the inside of the cooler main body 20 is dried. The ventilation efficiency of 20 inside air to the outside increases, and the drying efficiency can be improved.

The heater 84 is a defrosting mode for removing frost attached to the cooler 82, and the defrosting heater 88 that operates while the first valve 52 and the second valve 40 are closed, and the refrigerator main body 20. And a drying heater 86 that operates in a state in which the first valve 52 and the second valve 40 are opened. In the sterilization mode, the defrosting heater 88 and the drying heater 86 are dried. Both heaters 86 are operated.
By activating both the defrosting heater 88 and the drying heater 86, the time required for raising the temperature inside the cooling body 20 can be shortened as compared with the case where the temperature is raised by operating one of them. Can do.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the cooler case 80 in which the cooler 82 is housed is arranged in the vicinity of the left side wall 34 side, but the position of the cooler case 80 is not limited to this, For example, it may be arranged on the right side wall side. In that case, the rotation direction of the second injection unit 130 is opposite to that of the present embodiment.
(2) In the above embodiment, two internal fans 100 are provided, but the number of internal fans 100 may be one, or may be three or more.
(3) In the said embodiment, the 1st injection part 110 comprises the shape which bent the elongate pipe | tube several times, and formed the upper stage injection part 112, the upper stage connection part 114, the middle stage injection part 116, the lower stage connection part 118, and the lower stage injection part. However, as long as the first nozzle 122 and the second nozzle 124 are arranged on the outside in a plan view of the internal fan 100, the shape of the first injection unit 110 is not limited. For example, the first injection unit may have a bar shape that is long in the vertical direction, and one first injection unit 110 may be provided on each of the left and right sides of the internal fan 100.
(4) In this embodiment, the air blown from the blower fan 50 is configured to flow into the water storage tank 150 from the first opening 152 and the second opening 154, but the water storage tank 150 has a vent hole (air in the tank). A mouth may be provided separately.

DESCRIPTION OF SYMBOLS 10 ... Cooling box 20 ... Cooling box body 26 ... Bottom wall 28 ... Water inlet 36 ... Vent 40 ... Second valve 50 ... Blower fan 52 ... First valve 82 ... Cooler 84 ... Heater 86 ... Drying heater 88 ... Exclusion Frost heater 100 ... Fan in fan 150 ... Water storage tank

Claims (4)

A refrigerator that can be operated in a sterilization mode,
A box-shaped refrigerator body;
An internal fan that circulates cold air generated by a cooler provided inside the cooler body, and circulates inside the cooler body;
A heater that raises the temperature inside the cooler body;
A first valve that can block or open the ventilation of outside air to the inside of the cooling body;
An opening provided in the interior of the cooler body, and vents the inside air from the interior of the cooler body to the outside;
A second valve that can block or open the outside air from the vent to the outside, and
In the sterilization mode, a refrigerator in which the heater and the internal fan operate in a state where the first valve and the second valve are closed. A blower fan provided outside the cooler body;
A water storage tank provided outside the cooling body,
An opening is provided in the bottom wall of the cooler body, communicates with the interior of the water storage tank, and includes a water passage port through which water inside the cooler body can be passed to the water storage tank,
2. The refrigerator according to claim 1, wherein the water flow opening is configured to be able to vent the air from the blower fan to the refrigerator main body through the water storage tank.   The said ventilation hole is a refrigerator of Claim 1 or Claim 2 provided in the downstream of the said fan in a store | warehouse | chamber. The heater is
A defrosting mode for removing frost adhered to the cooler, the defrosting heater operating in a state in which the first valve and the second valve are closed;
A drying mode for drying the inside of the refrigerator main body, the drying valve operating separately with the first valve and the second valve open,
The refrigerator according to any one of claims 1 to 3, wherein both the defrosting heater and the drying heater are operated in the sterilization mode.

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