JP6489767B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator that refrigerates or freezes a stored item.

  Refrigerators equipped with a refrigerator compartment and a freezer compartment are widely used because of their high convenience. In recent years, refrigerators often include a refrigerated room whose room temperature is set to about 2 to 4 ° C and a refrigerated room (so-called vegetable room) whose room temperature is set to about 7 to 10 ° C. The vegetable room can suppress the fall of the quality of the refrigerated vegetable more effectively than a refrigerator room by setting room temperature higher than the said refrigerator compartment.

  When the vegetable compartment and the freezer compartment are adjacent to each other, both rooms are separated by a heat insulation wall having a heat insulating material (for example, urethane foam) in order to prevent the vegetable compartment from being excessively cooled by the cold air in the freezer compartment. (For example, see Patent Documents 1 to 3).

Japanese Patent No. 3350472 Japanese Patent No. 3585754 JP2013-140013A

  However, in some cases, it is not sufficient to provide a heat insulating wall. The cold air in the freezer compartment may cause the vegetable compartment to be overcooled, for example, below zero. In this case, the vegetables refrigerated in the vegetable compartment are frozen, and the quality of the refrigerated vegetables is degraded.

  Recently, there are an increasing number of users who purchase a large number of frozen foods at grocery stores, and in order to improve user convenience, refrigerators often include a freezing room (ice making room) for making ice. Therefore, at the time of designing the refrigerator, it is conceivable to reduce the space occupied by the vegetable room and arrange a freezing room and an ice making room around the vegetable room.

  For example, it is conceivable to arrange a freezing room on the bottom side of the vegetable room and an ice making room on the right or left side of the vegetable room. In this case, since the two wall surfaces adjacent to the freezing room and the ice making room in the vegetable room are cooled, there is a greater possibility that the vegetable room will be excessively cooled than when only a single wall surface is cooled. Rise.

  This invention is made | formed in view of such a situation, and it aims at providing the refrigerator which can prevent the vegetable room (refrigeration room) inside being cooled excessively.

The refrigerator according to the present invention is a refrigerator including a refrigerator compartment and a freezer compartment adjacent to the refrigerator compartment via a heat insulating wall, wherein cold air is supplied to the refrigerator compartment, and the refrigerator compartment in the refrigerator compartment The adjacent wall is provided with a cooling relaxation portion for relaxing cooling by the cold air in the freezer compartment, and the cooling relaxation portion is provided on the opposite side of the suction port for sucking air supplied to the refrigerator compartment. And a duct having a discharge port for discharging air, the duct being provided on a bottom surface of the refrigerator compartment, and the discharge port communicating with a return duct for returning the air in the duct to the lower side. It is characterized by that.

In the present invention, since the walls of the refrigerating compartment adjacent to the freezer compartment is provided with a cooling relaxation section, even as a wall surface is cooled, does not at room temperature within the refrigeration compartment is reduced excessively.

  In the refrigerator according to the present invention, the refrigeration chamber is arranged on a circulation path through which air cooled by a cooler circulates, and the cooling relaxation part is a vacuum heat insulating material, a heater, or a duct through which circulated air flows. It is characterized by comprising.

  In this invention, prevention of the excessive room temperature fall in a refrigerator is implement | achieved by providing a vacuum heat insulating material, a heater, or a duct in the wall surface of the refrigerator adjacent to a freezer.

  The refrigerator according to the present invention is characterized in that a suction port for sucking air is provided on one surface of the duct, and a discharge port for discharging air is provided in the refrigerator compartment on the opposite side of the suction port. To do.

  In the present invention, the temperature reduction of the side wall surface of the adjacent refrigeration room due to the transmission of cold heat from the freezer compartment, the transmission path of cold heat is increased by configuring a duct, and the air sucked from the suction port Even if it is cooled by heat transfer or heat conduction, air is discharged from the outlet through the flow of air in the duct and replaced, so the temperature in the duct does not decrease excessively, and the room temperature in the refrigerator compartment decreases excessively Is suppressed.

  The refrigerator according to the present invention is characterized in that a second suction port for sucking air is provided on the other surface intersecting the one surface of the duct.

  In the present invention, by increasing the number of suction ports, the resistance to the air sucked into the duct is reduced, and the air flows smoothly through the duct.

  The refrigerator according to the present invention is characterized in that a rib for guiding air extends between the suction port and the discharge port inside the duct.

  In the present invention, air smoothly flows along the rib from the inlet to the outlet.

In the refrigerator according to the present invention, since the walls of the refrigerating compartment adjacent to the freezer compartment is provided with a cooling relaxation section, even as a wall surface is cooled, never room temperature within the refrigeration compartment is lowered excessively In addition, freezing of vegetables refrigerated in the refrigerator compartment can be prevented.

3 is a front view schematically showing the refrigerator according to Embodiment 1. FIG. It is the schematic sectional drawing which made the II-II line shown in FIG. 1 the cutting line. FIG. 3 is a schematic cross-sectional view taken along line III-III shown in FIG. 1. It is a front view which briefly shows the internal structure of a refrigerator. It is a typical perspective view which shows the structure of a vegetable compartment. It is explanatory drawing corresponding to FIG. 2 explaining the circulation of the air in a refrigerator. It is explanatory drawing corresponding to FIG. 3 explaining the circulation of the air in a refrigerator. It is explanatory drawing corresponding to FIG. 4 explaining the circulation of the air in a refrigerator. It is a perspective view which briefly shows the structure of the duct of the refrigerator which concerns on Embodiment 2. FIG. FIG. 6 is a perspective view schematically showing a configuration of a duct of a refrigerator according to a third embodiment.

(Embodiment 1)
Hereinafter, the present invention will be described based on the drawings showing the refrigerator 1 according to the first embodiment. 1 is a front view schematically showing the refrigerator 1, FIG. 2 is a schematic sectional view taken along line II-II shown in FIG. 1, and FIG. 3 is a schematic taken along line III-III shown in FIG. FIG. 4 is a front view schematically showing the internal structure of the refrigerator 1. In FIG. 4, the description of the right door 6a, the left door 6b, the vegetable compartment case 41, the ice making case 31, the first freezer compartment case 11 and the second freezer compartment case 21 is omitted. In the following description, the top / bottom / left / right front / rear shown in the figure are used.

  The refrigerator 1 includes a vertically long rectangular parallelepiped outer box 1a whose front is opened, and a vertically long rectangular parallelepiped inner box 1b which is provided inside the outer box 1a. Between the outer box 1a and the inner box 1b, a foam heat insulating material 1c, for example, a urethane foam material is filled.

  A substantially horizontal upper heat insulating wall 2 and lower heat insulating wall 3 are provided on the upper and lower portions of the inner box 1b, respectively. The upper heat insulating wall 2 extends to the rear surface and the left and right side surfaces of the inner box 1b, and divides the space in the inner box 1b vertically. The right part of the lower heat insulating wall 3 extends to the rear and right side surfaces of the inner box 1b, and an opening 3a is provided at the rear part of the left part. The upper and lower spaces of the lower heat insulating wall 3 communicate with each other through the opening 3a.

  Between the upper heat insulating wall 2 and the lower heat insulating wall 3, a partial heat insulating wall 4 is provided that protrudes from the left side surface of the inner box 1b substantially horizontally by a predetermined distance. The left-right dimension of the partial heat insulation wall 4 is about 40% of the left-right dimension of the inner box 1b. The front and rear dimensions of the partial heat insulation wall 4 are about 25% of the left and right dimensions, and an opening 4a is formed from the rear end face of the partial heat insulation wall 4 to the rear face of the inner box 1b. The upper and lower spaces of the partial heat insulation wall 4 communicate with each other through the opening 4a.

  A substantially vertical vertical heat insulating wall 5 is provided at the right end of the partial heat insulating wall 4. The vertical heat insulating wall 5 is located on the right part (non-opening part) of the lower heat insulating wall 3. The vertical heat insulating wall 5 extends to the rear surface of the inner box 1b, to the right part of the upper heat insulating wall 2 and the lower heat insulating wall 3, and between the upper heat insulating wall 2 and the lower heat insulating wall 3, the space in the inner box 1b is left and right. It is divided into. Each of the upper heat insulating wall 2, the lower heat insulating wall 3, the partial heat insulating wall 4, and the vertical heat insulating wall 5 is filled with a foam heat insulating material, for example, a urethane foam material.

  In the inner box 1b, the part above the upper heat insulating wall 2 forms a refrigerating chamber 6 for refrigerating the housed object. The room temperature of the refrigerator compartment 6 is set to about 2-4 degreeC, for example. Further, a portion below the lower heat insulating wall 3 forms a first freezing chamber 10 for freezing the housed object. The room temperature of the 1st freezer compartment 10 is set up to become -18 ° C or less, for example.

  In the inner box 1b, a portion above the lower heat insulating wall 3 and below the partial heat insulating wall 4 and on the left side from the vertical heat insulating wall 5 forms a second freezer compartment 20 for freezing the housed object. doing. Further, an upper part of the partial heat insulation wall 4 and a lower side of the upper heat insulation wall 2 and a left side of the vertical heat insulation wall 5 form an ice making chamber 30 for producing ice. The room temperature of the second freezing room 20 and the ice making room 30 is set to be −18 ° C. or lower, for example. The ice making room 30 is a kind of freezing room.

  The portion above the lower heat insulating wall 3 and below the upper heat insulating wall 2 and on the right side of the vertical heat insulating wall 5 forms a vegetable room 40 that refrigerates objects such as vegetables. The room temperature of the vegetable room 40 is set to about 7 to 10 ° C., for example. The vegetable room 40 is a kind of refrigerated room.

  A plurality of (three in the present embodiment) plate-like storage shelves 7, 7, 7 are arranged in the upper and lower sides in the upper part of the refrigerator compartment 6. Guide rails 7 a extending in the front-rear direction corresponding to the plurality of storage shelves 7 are provided on the left and right side surfaces of the refrigerator compartment 6. The storage rack 7 is provided on the guide rail 7a so as to be slidable back and forth. The storage shelf 7 is located on the rear side of the refrigerator compartment 6, and a predetermined space in which a storage pocket 6 c described later is disposed is secured on the front side of the storage shelf 7.

  A right chilled chamber 8a is provided on the right side of the bottom of the refrigerator compartment 6, and a left chilled chamber 8b is provided on the left side of the right chilled chamber 8a. A tank 9 for storing water to be supplied to the ice making chamber 30 is provided on the left side of the left chilled chamber 8b. The right chilled chamber 8a, the left chilled chamber 8b, and the tank 9 are located at the bottom rear side of the refrigerator compartment 6. A predetermined space in which a storage pocket 6c described later is disposed is secured on the front side of the bottom of the refrigerator compartment 6. Further, a front side portion of the bottom of the refrigerating chamber 6 penetrates the upper heat insulating wall 2 up and down, and a flow hole 2a for allowing air in the refrigerating chamber 6 to flow downward is provided.

A right door 6a and a left door 6b that are rotatable about the vertical direction as a rotation axis direction are provided at the front right edge and the front left edge of the refrigerator compartment 6, respectively. The right door 6a and the left door 6b have a vertically long rectangular shape, and the vertical dimension of each of the right door 6a and the left door 6b is slightly larger than the vertical dimension of the refrigerator compartment 6.
The right and left dimensions of the right door 6a are slightly larger than the left and right dimensions of the left door 6b, and the total of the right and left dimensions of the right door 6a and the left door 6b is slightly larger than the left and right dimensions of the refrigerator compartment 6. The front opening portion of the refrigerator compartment 6 is covered by the right door 6a and the left door 6b. Packing is provided at the edge portions of the right door 6a and the left door 6b, and the right door 6a and the left door 6b close the front opening of the refrigerator compartment 6 in an airtight manner.

On the rear surface of each of the right door 6a and the left door 6b, a plurality of (three in this embodiment) storage pockets 6c, 6c, 6c for storing objects (for example, food in bottles, cans or tube containers) are provided. It is.
The storage pocket 6c has a box shape whose upper side is open. When the right door 6a and the left door 6b are closed, the storage pocket 6c at the lowermost position is located in the space in front of the bottom of the refrigerator compartment 6, and the storage pocket 6c above the storage pocket 6c at the lowermost position. Is located in the space on the front side of the storage shelf 7.

  A return duct 14 is provided at the rear of the first freezer compartment 10 so as to communicate with a discharge port 40a described later and return the air in the vegetable compartment 40 downward. The return duct 14 extends vertically. The first freezer compartment 10 is provided with a box-shaped first freezer compartment case 11 whose upper side is open so as to be slidable back and forth. Guide grooves 10a extending in the front-rear direction are provided on the left and right side surfaces of the first freezer compartment 10, and guided portions (not shown) that move in the guide grooves 10a are provided on the left and right side surfaces of the first freezer compartment case 11. Is provided.

  The second freezer compartment 20 is provided with a box-shaped second freezer compartment case 21 whose upper side is open so as to be slidable back and forth. A guide groove 20a extending in the front-rear direction is provided on the left side surface of the second freezer compartment 20, and a guided portion (not shown) that moves in the guide groove 20a is provided on the left side surface of the second freezer compartment case 21. It is provided.

  The ice making chamber 30 is provided with a box-shaped ice making case 31 whose upper side is open so as to be slidable back and forth. A guide groove 30a extending in the front-rear direction is provided on the left side surface of the ice making chamber 30, and a guided portion (not shown) that moves in the guide groove 30a is provided on the left side surface of the ice making case 31. The ice making chamber 30 is located below the tank 9. An ice tray 32 is provided above the ice chamber case 31, and water is appropriately supplied from the tank 9 to the ice tray 32 to produce ice.

  The vegetable room 40 is provided with a box-shaped vegetable room case 41 whose upper side is open so as to be slidable back and forth. The configuration of the vegetable room 40 will be described in detail later.

  As shown in FIG. 3, a rear plate 50 extending vertically is provided at the rear of the first freezing chamber 10, the second freezing chamber 20, the ice making chamber 30, and the refrigerator compartment 6, and the rear plate 50 and the inner box 1b are provided. A cold air passage 51 is formed between the two. In the cold air passage 51, a cooler 12 is provided on the rear side of the first freezer compartment 10.

  A glass tube heater 13 for removing frost attached to the cooler 12 is provided below the cooler 12. On the upper side of the cooler 12, a freezer compartment blower 53 for sending cool air to the first freezer compartment 10, the second freezer compartment 20 and the ice making compartment 30 is provided. Between the cooler 12 and the glass tube heater 13 and the rear plate 50, a separation plate 54 for separating the cool air passage 51 forward and backward is provided.

  In the cold air passage 51, a partition wall portion 55 that divides the cold air passage 51 in the vertical direction is provided in the vicinity of the upper heat insulating wall 2. The partition wall 55 is provided with a vent hole 55a penetrating vertically. On the upper side of the partition wall 55, an electric damper 56 that opens and closes the vent hole 55a is provided. On the upper side of the damper 56, a cold room blower 57 for blowing cold air into the cold room 6 is provided. The cold air passage 51 is provided with freezing cold air supply holes 50 a at positions corresponding to the first freezing chamber 10, the second freezing chamber 20, and the ice making chamber 30, and cold air is supplied to positions corresponding to the refrigerating chamber 6. A cold supply hole 50b for refrigeration is provided.

  The cooler 12 is located in the vicinity of the first freezer compartment 10, the second freezer compartment 20, and the ice making compartment 30. Therefore, the heat of the first freezing chamber 10, the second freezing chamber 20, and the ice making chamber 30 is taken away by the cooler 12 via the rear plate 50 and the separation plate 54, and the first freezing chamber 10, the second freezing chamber 20, and The ice making chamber 30 is efficiently indirectly cooled, and the cooling efficiency is improved.

  An upper surface plate 50c is provided in the upper part of the refrigerator compartment 6, and an upper cold air passage 51a communicating with the cold air passage 51 is formed between the upper surface plate 50c and the inner box 1b. The upper cold air passage 51a is also provided with a cold air supply hole 50b for refrigerating that supplies cold air to the refrigerating chamber 6.

  A machine room 60 is provided behind the bottom of the first freezer compartment 10. A compressor 61 is disposed in the machine room 60. The compressor 61 is connected to a condenser, an expander (all not shown), and a cooler 12. A refrigerant such as isobutane is circulated by driving the compressor 61 to operate the refrigeration cycle. Thereby, the cooler 12 becomes the low temperature side of the refrigeration cycle.

  An electrical component 62 is provided on the rear side of the machine room 60. The electrical part 62 has an electrical box (not shown) whose rear side is open. The electrical box is formed by drawing a metal plate, and has a large heat radiation area, so that heat from the electrical part 62 can be easily radiated.

  The electrical component 62 includes electrical components including a control board having a control circuit for controlling the compressor 61, the freezer blower 53, the refrigerating compartment blower 57, the damper 56, and the like. Since the electrical unit 62 is installed in the machine room 60, the volume of the refrigerator room 6 that is frequently used is secured wider than the case where it is installed on the rear side of the refrigerator room 6, and the volume efficiency of the refrigerator 1 is improved. Convenience can be improved.

  In response to a command from the control circuit, the compressor 61, the freezer compartment fan 53, and the refrigerator compartment fan 57 are driven or stopped, and the damper 56 opens and closes the vent hole 55a.

  Next, the configuration of the vegetable compartment 40 will be described. FIG. 5 is a schematic perspective view showing the configuration of the vegetable compartment 40. As shown in FIGS. 2 and 5, on the left side surface (vertical heat insulating wall 5) of the vegetable compartment 40, a guide rail 42 that extends in the front-rear direction and guides the vegetable compartment case 41 is provided. The guide rail 42 is U-shaped in a side view with the front side opened. In addition, a thin heater 43 is provided on each of the upper and lower sides of the guide rail 42 on the left side of the vegetable compartment 40. Based on a command from the control circuit, the heater 43 is driven or stopped.

  On the bottom right side of the bottom of the vegetable compartment 40, there is provided a discharge port 40a that passes vertically and discharges air downward. A duct 44 that covers the entire bottom surface of the vegetable chamber 40 is provided on the bottom surface of the vegetable chamber 40. The duct 44 has a thin box shape having a rectangular shape in plan view, and its bottom surface is open. On the front surface of the duct 44, a plurality of (three in this embodiment) front suction ports 44a, 44a, 44a for sucking air are arranged side by side.

  Inside the duct 44, a plurality of (two in this embodiment) ribs 45, 45 are provided that extend between the front suction port 44a and the discharge port 40a. The rib 45 extends from the portion between the front suction ports 44a at the front end portion of the duct 44 toward the discharge port 40a. As shown by the arrows in FIG. 5, the air sucked from the front suction port 44a is guided by the rib 45 and reaches the discharge port 40a.

  A moving part (not shown) such as a roller or a slider is provided outside the left side surface of the vegetable compartment case 41, and the moving part moves inside a U-shaped guide rail 42. The vegetable compartment case 41 moves smoothly back and forth in the vegetable compartment 40 by the movement of the moving part. The vegetable compartment case 41 is located above the duct 44. That is, a duct 44 is provided between the bottom of the vegetable compartment 40 and the bottom of the vegetable compartment case 41.

  Next, air circulation in the refrigerator 1 will be described. 6 is an explanatory diagram corresponding to FIG. 2 for explaining the circulation of air in the refrigerator 1, FIG. 7 is an explanatory diagram corresponding to FIG. 3 for explaining the circulation of air in the refrigerator 1, and FIG. It is explanatory drawing corresponding to FIG. The arrows described in FIGS. 6 to 8 indicate the flow of air.

  The air (cold air) cooled by the cooler 12 is sent upward and forward by driving the freezer compartment fan 53. The sent out cool air flows through the cool air passage 51, and is supplied to the first freezer compartment 10, the second freezer compartment 20, and the ice making compartment 30 through the freezing cool air supply hole 50a. The cold air immediately after being sent out from the freezer blower 53 is about minus 40 ° C., and the first freezer compartment 10, the second freezer compartment 20 and the ice making compartment 30 are close to the freezer compartment blower 53. Objects stored in the second freezing room 20 and the ice making room 30 are frozen.

  When the damper 56 is opened, the cold air flows upward through the upper cold air passage 51 and is supplied into the cold room 6 through the cold air supply hole 50b for cold storage by driving the cold room blower 57. Further, the cold air is also sent to the upper cold air passage 51a and is supplied into the refrigerating chamber 6 through the refrigerating cold air supply hole 50b. The cold air supplied into the refrigerating chamber 6 through the refrigerating cold air supply hole 50b of the upper cold air passage 51a moves toward the storage pocket 6c, and efficiently cools the object stored in the storage pocket 6c. The cold air supplied to the refrigerator compartment 6 has a higher temperature than the cold air supplied to the first freezer compartment 10, the second freezer compartment 20, and the ice making compartment 30, and the room temperature of the refrigerator compartment 6 is about 2 to 4 ° C. become.

  The cold air supplied into the refrigerator compartment 6 reaches the vegetable compartment 40 through the flow holes 2 a provided at the bottom of the refrigerator compartment 6. The cold air supplied to the vegetable compartment 40 has a higher temperature than the cold air supplied to the refrigerator compartment 6, and the room temperature of the vegetable compartment 40 is about 7 to 10 ° C. The cold air supplied to the vegetable compartment 40 passes through the front suction port 44a, flows through the duct 44 along the rib 45, and flows back through the discharge port 40a and the return duct 14. The cold air flowing through the return duct 14 reaches the cooler 12.

  The cold air passage 51, the upper cold air passage 51a, the cold air supply hole 50b for cold storage, the cold room 6, the vegetable room 40, the flow hole 2a, the duct 44, the return duct 14, and the like constitute a cold air circulation path for cold storage. . In other words, the cold air passage 51, the upper cold air passage 51a, the cold air supply hole 50b, the cold room 6, the vegetable room 40, the flow hole 2a, the duct 44, the return duct 14 and the like on the circulation path of the cold air for refrigeration. Is located.

  Due to the cool air in the first freezer compartment 10, the temperature of the lower heat insulation wall 3 is lowered, and the temperature near the bottom of the vegetable compartment 40 is also lowered. However, as described above, the duct 44 is located on the bottom of the vegetable compartment 40, and the duct 44 is provided between the bottom of the vegetable compartment 40 and the bottom of the vegetable compartment case 41. Therefore, even if the temperature in the vicinity of the bottom of the vegetable compartment 40 (the temperature in the duct 44) decreases, the cool air in the duct 44 returns to the duct 14 through the discharge port 40a. The air near the bottom of the vegetable compartment 40 immediately moves to the discharge port 40 a and does not diffuse into the vegetable compartment 40.

  Even if the temperature of the upper surface of the duct 44 is lowered by the cool air in the duct 44 (the air cooled by the cool air in the first freezer compartment 10), the cool air in the duct 44 is discharged from the discharge port 40a. Don't stay inside. Therefore, the temperature drop of the upper surface of the duct 44 is suppressed, the temperature of the upper surface of the duct 44 does not become zero, and air near the bottom surface of the vegetable room 40 is prevented from freezing the vegetables accommodated in the vegetable room 40. Can do.

  Due to the cold air in the second freezer compartment 20 and the ice making chamber 30, the temperature of the left side surface of the vegetable compartment 40 (side surface adjacent to the second freezer compartment 20 and the ice making compartment 30) decreases, and the air temperature near the left side face of the vegetable compartment 40. Also decreases. However, as described above, since the heater 43 is provided on the left side of the vegetable compartment 40, the temperature of the left side of the vegetable compartment 40 can be increased by driving the heater 43. Accordingly, it is possible to prevent the temperature near the left side surface of the vegetable room 40 from decreasing, and to prevent the air near the left side surface of the vegetable room 40 from freezing the vegetables stored in the vegetable room 40.

  The cold air in the ice making chamber 30 moves to the second freezer compartment 20 through the opening 4a, and the cold air in the second freezer compartment 20 moves to the first freezer compartment 10 through the opening 3a. The cold air in the first freezer compartment 10 moves downward, passes through the gap between the bottom surface of the first freezer compartment case 11 and the inner box 1b, and passes through a passage formed between the separation plate 54 and the inner box 1b. It reaches the cooler 12.

  The cold air passage 51, the freezing cold air supply hole 50a, the ice making chamber 30, the first freezing chamber 10, the second freezing chamber 20, and the like constitute a freezing cold circulation path. In other words, the cold air passage 51, the freezing cold air supply hole 50a, the ice making room 30, the first freezing room 10, the second freezing room 20, and the like are positioned on the freezing cold air circulation path.

  In the refrigerator 1 according to Embodiment 1, the heater 43 is provided on the left side of the vegetable compartment 40 adjacent to the ice making chamber 30 and the second freezer compartment 20, and the bottom of the vegetable compartment 40 adjacent to the first freezer compartment 10. Since the duct 44 is provided, even if the two wall surfaces of the vegetable compartment 40 are cooled, the room temperature in the vegetable compartment 40 can be prevented from excessively decreasing, and freezing of vegetables refrigerated in the vegetable compartment 40 can be prevented. Can be prevented.

  Even if the air in the duct 44 sucked from the suction port is cooled by the cold air in the first freezer compartment 10, the cooled air is discharged from the discharge port 40a, so that the temperature in the duct 44 decreases excessively. There is nothing, and the excessive fall of the room temperature of the vegetable compartment 40 is suppressed.

  Instead of the duct 44, a heater 43 or a vacuum heat insulating material may be provided on the bottom surface of the vegetable compartment 40. Further, instead of the heater 43, a vacuum heat insulating material or a duct 44 may be provided on the left side of the vegetable compartment 40. Since the vacuum heat insulating material has high heat insulating properties, it is possible to prevent the room temperature in the vegetable room 40 from being excessively lowered, similarly to the heater 43 or the duct 44. When the duct 44 is provided on the left side surface of the vegetable compartment 40, a guide rail 42 is formed on the duct 44, or a portion other than the guide rail 42 on the left side surface of the vegetable compartment 40 (above or below the guide rail 42). A duct 44 is provided.

  In addition, when the duct 44 or a vacuum heat insulating material is used, it is advantageous at the point which can reduce power consumption compared with the case where the heater 43 is used. Moreover, it is not necessary to secure the space for installing the wiring attached to the heater 43 on the wall surface of the vegetable room 40, and the vegetable room 40 (the vertical heat insulating wall 5, the upper heat insulating wall 2, the lower heat insulating wall 3, and the inner box 1b). The configuration can be simplified, and the manufacturing process, manufacturing time and / or manufacturing cost of the refrigerator 1 can be reduced.

  In addition, you may provide the duct 44, the heater 43, or a vacuum heat insulating material in the upper surface of the vegetable room 40, a back surface, or a right side surface.

  When the heater 43 is not used, a connector connected to the heater 43 is also unnecessary. Conventionally, the connector has been arranged in the space formed in the vertical heat insulating wall 5, but the connector is no longer necessary, and the space can be filled with the foam insulation.

  Moreover, when three or more wall surfaces are adjacent to the freezer compartment among the wall surfaces of the vegetable compartment 40, the duct 44, the heater 43, or the vacuum heat insulating material is provided on all the wall surfaces adjacent to the freezer compartment. It is possible to prevent the room temperature from excessively decreasing.

  The vertical heat insulating wall 5 is attached in the inner box 1b after injecting the foam heat insulating material 1c between the outer box 1a and the inner box 1b. After attaching the vertical heat insulation wall 5 to the inner box 1b so that the internal space of the vertical heat insulation wall 5 and the space between the outer box 1a and the inner box 1b are connected, it is also possible to inject a foam heat insulating material. However, since the connecting portion between the vertical heat insulating wall 5 and the inner box 1b is bent, it is difficult to reach the internal space of the foam heat insulating material 1c vertical heat insulating wall 5, and the heat insulating efficiency is deteriorated.

  By increasing the thickness of the vertical heat insulation wall 5, the heat insulation efficiency is improved, but the volume in the vegetable compartment 40 is reduced. Therefore, by providing the vertical heat insulating wall 5 with the thin duct 44, the heater 43, or the vacuum heat insulating material, it is possible to insulate while ensuring the volume in the vegetable compartment 40. In particular, in recent years, the thickness of the vacuum heat insulating material having high heat insulating properties has been reduced, and by using the vacuum heat insulating material, it is possible to ensure both the volume in the vegetable compartment 40 and heat insulation easily. .

(Embodiment 2)
Hereinafter, the present invention will be described based on the drawings showing a refrigerator 1 according to a second embodiment. FIG. 9 is a perspective view schematically showing the configuration of the duct 44. A plurality of side surface inlets 44 b are provided on the left and right side surfaces of the front portion of the duct 44. By providing not only the front suction port 44a but also the side suction port 44b, the resistance to the air sucked into the duct 44 is reduced, and the air is smoothly sucked into the duct 44.

  Among the configurations of the refrigerator 1 according to the second embodiment, the same reference numerals are given to the same configurations as those in the first embodiment, and detailed description thereof is omitted.

(Embodiment 3)
Hereinafter, the present invention will be described based on the drawings showing a refrigerator 1 according to a third embodiment. FIG. 10 is a perspective view schematically showing the configuration of the duct 44. A plurality of upper surface inlets 44 c are provided on the upper surface of the front portion of the duct 44. By providing not only the front suction port 44a but also the upper suction port 44c, the resistance to the air sucked into the duct 44 is reduced, and the air is smoothly sucked into the duct 44.

  Although the temperature of the portion where the upper surface inlet 44c is provided on the upper surface of the duct 44 is likely to decrease, the upper surface inlet 44c is provided near the door having a relatively high temperature by providing the upper surface inlet 44c at the front of the duct 44. Therefore, it is possible to suppress a temperature drop in the portion where the upper surface inlet 44c is provided.

  Considering the temperature drop, the upper surface inlet 44c is preferably provided in a range of a dimension L2 corresponding to about 30 to 50% with respect to the depth dimension L1 of the duct 44. In addition, suction ports may be further provided on the front portion of the duct 44 and the left and right side surfaces of the front portion.

  Among the configurations of the refrigerator 1 according to the third embodiment, the same reference numerals are given to the same configurations as those in the first or second embodiment, and detailed description thereof is omitted.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The technical features described in each embodiment can be combined with each other, and the scope of the present invention is intended to include all modifications within the scope of claims and the scope equivalent to the scope of claims. Is done.

  The following matters are further disclosed regarding the embodiment of the present invention described above.

  The refrigerator 1 according to the present invention is a refrigerator 1 including a refrigerator compartment 40 and a plurality of freezer compartments 10, 20, and 30 adjacent to the refrigerator compartment 40 via heat insulating walls 3 and 5, and the refrigerator compartment 40 The plurality of walls 3 and 5 adjacent to the freezer compartments 10, 20, and 30 are provided with cooling relaxation portions 43 and 44 that alleviate cooling by the cold air in the freezer compartments 10, 20, and 30, respectively. To do.

  In the refrigerator 1 according to the present invention, the refrigeration chamber 40 is disposed on a circulation path through which air cooled by the cooler 12 circulates, and the cooling relaxation portion includes a vacuum heat insulating material, a heater 43, or circulating air. It is characterized by comprising a duct 44 that flows.

  The refrigerator 1 according to the present invention is provided with a suction port 44a for sucking air on one surface of the duct 44, and a discharge port 40a for discharging air is provided in the refrigerator compartment 40 on the opposite side of the suction port 44a. It is characterized by being.

  The refrigerator 1 according to the present invention is characterized in that second suction ports 44 b and 44 c for sucking air are provided on the other surface intersecting the one surface of the duct 44.

  The refrigerator 1 according to the present invention is characterized in that a rib 45 for guiding air extends between the suction port 44 a and the discharge port 40 a inside the duct 44.

1 Refrigerator 3 Lower heat insulation wall (heat insulation wall)
5 Vertical insulation wall (insulation wall)
10 First freezer compartment (freezer compartment)
12 Cooler 20 Second freezer room (freezer room)
30 Ice making room (freezer room)
40 Vegetable room (refrigerated room)
40a Discharge port 43 Heater (cooling relaxation part)
44 Duct (cooling relaxation part)
44a Front suction port (suction port)
44b Side inlet (second inlet)
44c Upper surface inlet (second inlet)
45 ribs

Claims (4)

A refrigerator comprising a refrigerator compartment and a freezer compartment adjacent to the refrigerator compartment via a heat insulating wall,
Cold air is supplied to the refrigerator compartment,
A cooling relaxation portion is provided on the wall adjacent to the freezer compartment in the refrigerating chamber to relieve cooling by the cold air in the freezer compartment,
The cooling relaxation part is configured by a duct having an intake port for sucking air supplied to the refrigerator compartment, and an exhaust port for discharging air on the opposite side of the suction port ,
The duct is provided on the bottom surface of the refrigerator compartment,
The refrigerator is characterized in that the discharge port communicates with a return duct that returns the air in the duct to the lower side . A refrigerator comprising a refrigerator compartment and a freezer compartment adjacent to the refrigerator compartment via a heat insulating wall,
Cold air is supplied to the refrigerator compartment,
Mitigating cooling by cold air in the freezer compartment on the wall of the refrigerator compartment adjacent to the freezer compartment
A cooling relaxation part is provided,
The cooling mitigation unit includes a suction port for sucking air supplied to the refrigerator compartment, and a reaction between the suction port and the suction port.
Consists of a duct with a discharge port for discharging air on the opposite side,
The inlet is provided on one side of the duct;
A second suction port for sucking air is provided on the other surface intersecting the one surface of the duct.
When
A refrigerator characterized by. A second refrigerating room having a temperature lower than that of the refrigerating room,
The refrigerator according to claim 1 or 2 , wherein cold air after cooling the second refrigerator compartment is supplied to the refrigerator compartment. The refrigerator according to any one of claims 1 to 3 , wherein a rib for guiding air extends between the suction port and the discharge port inside the duct.

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