JP2014070743A - Refrigerator - Google Patents

Abstract

The present invention provides a refrigerator capable of generating an air layer in the vicinity of a door in which cold air does not convect in order to improve heat insulation performance in the vicinity of a door of a cooling chamber provided with a drawer container such as a freezing chamber.
A convection control unit is provided in a gap between a side outer surface and a bottom surface of a drawer container and a side wall and a floor surface of a cooling chamber to suppress convection from flowing to the front side from the convection control unit. An air layer is generated in the vicinity of the door 8 of the cooling chamber. Since this air layer becomes a heat insulating layer, the heat insulating property in the vicinity of the door is improved, and heat intrusion from the periphery of the cooling chamber door 8 into the cooling chamber is reduced.
[Selection] Figure 3

Description

  The present invention relates to a refrigerator provided with a drawer container.

  In the conventional refrigerator, the air cooled by the cooler is blown out from the cold air outlet on the back of the refrigerator into the drawer by the internal fan. In a cooling room such as a freezing room that separates the inside of the refrigerator, cooling is performed by circulating the cold air blown from the cold air outlet through the inside of the drawer container in the cooling room. The cold air that has cooled the inside of the drawer container passes through the gap between the cooling chamber door and the front outer surface of the drawer container from the top of the drawer container, and the gap between the cooling chamber side wall and the side outer surface of the drawer container, and the bottom surface of the drawer container and the cooling chamber floor It flows through the gap with the surface and returns to the cooler to be cooled again.

  In order to improve the energy saving of the refrigerator, it is necessary to increase the heat insulation performance of the cooling chamber. It is difficult to provide sufficient insulation between the cooling chamber door that requires opening / closing operation and the front opening edge of the cooling chamber, and it is sealed with a packing that has a sealing function to suppress heat intrusion from outside the cooling chamber Has been. The packing is usually made of a rubber magnetic material. When the packing is cooled, the sealing function of the packing is lowered, the temperature between the cooling chamber and the outside of the cooling chamber is insufficient, and heat intrusion increases.

  In conventional refrigerators, measures are taken to prevent cold air from directly hitting the bottom packing by covering the packing at the bottom of the cooling chamber door, where cold air is easily convected, with a bowl-shaped packing. Further, the convection of the cold air does not spread from the gap between the cooling chamber door and the outer front surface of the drawer container to the side wall side, flows through the gap between the bottom surface of the drawer container and the floor surface of the cooling chamber, passes through the cold air inlet on the rear surface, and is cooled. So as to return to the cooling chamber door or the front outer surface of the drawer container, a straightening guide body extending in the vertical direction is provided to suppress the flow of cold air to the packing on both the left and right sides (see, for example, Patent Document 1) ).

JP 2006-78025 A

  In the conventional cooling chamber, the convection of the cold air to the packings on the left and right sides is suppressed by the guide body, but the convection is promoted by the gap between the cooling chamber door and the front outer surface of the drawer container. Although it is not directly exposed to cold air, the bottom packing is cooled and the sealing function is deteriorated, and there is a problem that heat penetration from the periphery of the door into the cooling chamber cannot be sufficiently suppressed.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a refrigerator in which heat penetration from the periphery of the cooling chamber door into the cooling chamber is sufficiently reduced.

  In the refrigerator according to the present invention, the air overflowing from the upper surface of the drawer container is convected so as to descend between the side surface of the cooling chamber and the outer side surface of the drawer container and flow to the back side and be sucked in at the suction port. Provided with a convection control unit that suppresses air spilled from the upper surface of the cooling chamber from flowing into the gap between the inside of the cooling chamber door and the front outer surface of the drawer container.

  According to the refrigerator according to the present invention, by including the convection control unit that suppresses the air overflowing from the upper surface of the drawer container from flowing into the gap between the inside of the door and the front outer surface of the drawer container, the left and right sides and the bottom side Cooling air does not convection in the vicinity of the cooling chamber door where the packing is provided, and a stagnant air layer is formed in the vicinity of the cooling chamber door, so that the sealing function of the packing is not deteriorated, so that heat penetration into the cooling chamber is sufficiently suppressed. be able to.

It is a figure which shows the external appearance which looked at the refrigerator which concerns on Embodiment 1 of this invention from the door front. It is sectional drawing which looked at the refrigerator which concerns on Embodiment 1 of this invention from the side surface direction. It is the perspective view which looked at the freezer compartment which concerns on Embodiment 1 of this invention from the back direction. It is sectional drawing which looked at the freezer compartment which concerns on Embodiment 1 of this invention from the side surface direction. It is the perspective view which looked at the freezer compartment which provided the lid in the freezer compartment upper case of the freezer compartment concerning Embodiment 1 of the present invention from the back. It is a bar graph which shows the result of having simulated the heat penetration | invasion amount to the freezer compartment which concerns on Embodiment 1 of this invention. It is the perspective view which looked at another example of the freezer compartment which concerns on Embodiment 1 of this invention from the back direction. It is sectional drawing of the left half which looked at the freezer compartment which concerns on Embodiment 2 of this invention from the front direction. It is sectional drawing seen from the freezer compartment front direction which used the convection control part which concerns on Embodiment 2 of this invention as the protrusion part of the freezer compartment side wall. It is sectional drawing of the freezer compartment front which makes the seal member which concerns on Embodiment 2 of this invention a side wall surface. It is sectional drawing of the freezer compartment front provided with the sealing member which concerns on Embodiment 3 of this invention. It is sectional drawing of the freezer compartment front provided with the sealing member which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
First, the configuration of the refrigerator according to Embodiment 1 of the present invention will be described. FIG. 1 shows the external appearance of the entire refrigerator 100 according to Embodiment 1 of the present invention as viewed from the front of the door. Although the refrigerator 100 has a total of five rooms, the refrigerator compartment 1 provided with two doors is located in the uppermost part, and the vegetable compartment 5 is located in the lowest part. A freezer room 4 is located above the vegetable room 5. Between the freezer room 4 and the refrigerator room 1, the right side of the front is the switching room 2, and the left side of the front is the ice making room 3.

  FIG. 2 shows a cross-sectional view of the refrigerator 100 as viewed from the side. Each room of the refrigerator 100 has a door that is openable and closable on the front surface to allow food to be taken in and out. In FIG. 2, the refrigerator compartment door 6, the switching compartment door 7, the freezer compartment door 8, and the vegetable compartment door 9 are provided. Indicated by In FIG. 2, each room is partitioned by a refrigerator compartment floor 50, a switching compartment floor 51, a freezer compartment floor 52, and a vegetable compartment floor 53. The refrigerator compartment 1 is provided with a refrigerator compartment case 56 for storing seasonings and the like. Each room except the refrigerator compartment 1 has a plastic storage case (drawer container) that can be pulled out to store food and has an open top surface. In FIG. 2, the switching chamber 2 has a switching chamber case 10 as a drawer container, and a switching chamber outlet 16 is provided to cool the switching chamber case 10. In addition, the freezer compartment 4 has two cases of a freezer compartment upper case 11 and a freezer compartment lower case 12 as drawer containers, and in order to cool the inside of each case, the freezer compartment upper outlet 17 and the freezer compartment lower outlet 18. Is provided. The vegetable compartment 5 also has two cases of a vegetable compartment upper case 14 and a vegetable compartment lower case 15 as drawer containers. In addition, although the storage case which is a drawer container is normally supported by the rail 13, in implementing this Embodiment, it does not interfere with changing the position of the rail 13 to a height direction.

  In Embodiment 1, the freezer compartment 4 corresponds to the cooling compartment in the present invention. Needless to say, the same effect can be obtained even if the switching chamber 2 in other rooms is configured as a cooling chamber.

  On the back side of the refrigerator 100, a cooler 20 for cooling the internal air is provided. The cooler 20, the compressor 22, the condensing pipe 23, and the capillary tube (not shown) constitute a cooling cycle. The refrigerator 20 removes the heat in the refrigerator by a so-called heat pump function and the condensing pipe 23 passes through the refrigerator 100. It is discharged outside. Air (cold air) cooled by the cooler 20 is sent into each room by using a fan 19 as shown by an arrow in FIG. 2. For example, in the freezer compartment 4, the freezer compartment upper outlet 17 and the freezer The cold air that has circulated through the drawer container from the blowout outlet 18 passes through the cold air inlet 24 and returns to the cooler 20 to be cooled again. The freezer compartment upper air outlet 17 is on the inner rear surface of the freezer compartment 4 and above the upper surface of the freezer compartment upper case 11, and the freezer compartment lower air outlet 18 is on the inner rear surface of the freezer compartment 4 and the upper surface of the freezer compartment lower case 12. It is provided above. Further, the cold air inlet 24 is provided on the inner back surface of the freezer compartment 4 and below the upper surface of the freezer compartment lower case 12. When the refrigerator 100 is operated for a long time, frost adheres to the cooler 20, so that the frost is periodically removed by the defroster 21.

  The doors of each room of the refrigerator 100 are opened and closed when food is taken out or stored, but in order to prevent condensation around the doors due to temperature changes during opening and closing operations, anti-condensation measures are taken around the doors. In the present embodiment, the condensation pipe 23 is provided around the door to prevent condensation.

  Next, in the first embodiment, out of the five rooms of the refrigerator 100, the freezer room 4 is taken as an example of the cooling room, and the features of the present embodiment will be described.

  FIG. 3 is a perspective view of the freezer compartment 4 as viewed from the back, and FIG. 4 is a cross-sectional view of the freezer compartment 4 as viewed from the side. The freezer compartment 4 whose front surface is open and whose inner wall surfaces are a floor surface, a back surface, and a side surface has two drawer containers of the freezer compartment upper case 11 and the freezer compartment lower case 12 as described above, and also under the freezer compartment. The case 12 is supported at its upper edge by rails 13. Here, the freezer compartment upper case 11 and the freezer compartment lower case 12 are provided with a seal member 26 as a convection control unit so as to cover the outer periphery of the side surface and the bottom. The sealing member 26 includes a second gap between the outer surface of the freezer upper case 11 or the freezer lower case 12 and the freezer side wall 25 that is the side surface of the opposing freezer chamber 4, and the bottom surface of the freezer lower case 12. Is formed in a third gap between the freezer compartment floor 52 and the cold air overflowing from the upper surface of the freezer compartment upper case 11 or the freezer compartment lower case 12, the first free air between the freezer compartment door 8 and the front outer surface of the drawer container. There is a function to suppress convection in the gap.

  The arrows in FIG. 4 indicate the cold air blown from the freezer compartment upper outlet 17 into the freezer compartment upper case 11, the cold air blown from the freezer compartment lower outlet 18 into the freezer compartment lower case 12, and the freezer compartment 4. The flow of the cold air sucked into the cold air suction port 24 is shown.

  The arrows in FIG. 3 indicate typical cold convection. The arrows surrounded by the broken lines indicate the flow of cool air circulating in the freezer compartment upper case 11 from the freezer compartment upper outlet 17 and the flow of cool air circulating in the freezer compartment lower case 12 from the freezer compartment lower outlet 18. The outlined white arrows indicate the cold air overflowing from the freezer upper case 11 and the freezer lower case 12 and flowing into the second gap between the side outer surface of each case and the freezer side wall 25. The arrow indicates the cold air flowing through the third gap between the bottom surface of the freezer compartment lower case 12 and the freezer compartment floor surface 52 to the cold air inlet 24 on the back surface of the freezer compartment 4. That is, since the seal member 26 is formed in the second gap and the third gap, the cold air blown from the freezer compartment upper outlet 17 and the freezer compartment lower outlet 18 is freezer upper case 11 and freezer compartment. After circulating through the inside of the lower case 12 and cooling, it overflows from the upper surface of the freezer compartment upper case 11 and the freezer compartment lower case 12 on the back side from the seal member 26 which is a convection control unit, respectively, and each case side outer surface and the freezer compartment. The second gap between the side walls 25 passes through the third gap between the bottom surface of the freezer compartment lower case 12 on the back side and the freezer compartment floor surface 52 from the seal member 26 serving as a convection control unit to the back side, Cooling is performed by returning to the cooler 20 through the cold air inlet 24.

  For this reason, the cold air overflowing from the upper surfaces of the freezer upper case 11 and the freezer lower case 12 which are the drawer containers does not convect to the first gap between the freezer door 8 and the front outer surface of the drawer container. On the freezer compartment door 8 side of the seal member 26, which is a convection control unit, convection of cold air does not occur and a stagnant air layer exists.

  The seal member 26 that is a convection control unit is preferably located on the front side of the center of the freezer compartment upper case 11 and the freezer compartment lower case 12 that are drawer containers.

  Examples of the sealing member 26 include a rubber-like packing material and a flexible foaming heat insulating material. The seal member 26 has a certain thickness and strength, and may be fixed to the inner wall of the freezer compartment 4, may be fixed to the drawer container, or a combination thereof.

  The seal member 26 has a film-like structure, and one side of the seal member 26 is an inner wall of the freezer compartment 4 such as the freezer compartment side wall 25 and the freezer compartment floor 52 or a drawer container such as the freezer compartment upper case 11 and the freezer compartment lower case 12. It may be fixed.

  The seal member 26 has a rod-like structure and is fixed to an inner wall of the freezer compartment 4 such as the freezer compartment side wall 25 and the freezer compartment floor 52 or a drawer container such as the freezer compartment upper case 11 and the freezer compartment lower case 12. Also good.

  Next, the operation of the present embodiment will be described. Usually, the freezer compartment door 8 is provided with a packing to prevent heat from entering from the outside of the freezer compartment. However, if cold air convects in the first gap between the freezer compartment door 8 provided with the packing and the front outer surface of the drawer container, the packing is cooled by the cold air and the sealing function is lowered, and the freezer compartment door There is a problem that heat enters from the vicinity of 8 into the freezer compartment 4 and heat loss occurs near the freezer compartment door.

  Further, in the vicinity of the freezer compartment door 8 that needs to have an opening / closing function, it is difficult to provide sufficient heat insulating material and enhance the heat insulating performance because of its structure compared to the back and side surfaces.

  In addition, since the purchaser of the refrigerator 100 opens and closes the freezer compartment door 8 so that food can be taken in and out, when the freezer compartment door 8 is opened, heat enters from the outside of the freezer compartment 4 or cold air enters from the inside of the freezer compartment 4. Leaks.

  In addition, in order to prevent dew condensation in the vicinity of the freezer compartment door 8, anti-condensation measures serving as a heat source are taken. For example, in the present embodiment, a high-temperature (about 35 ° C.) condensing pipe 23 is placed near the freezer compartment door 8, and serves as a heat source for the freezer compartment 4. In the prior art, the flow of cold air toward the side surface of the freezer compartment 4 is controlled. However, since the cold air flows through the first gap near the freezer compartment door 8, the heat generated by the cold air being received near the freezer compartment door 8. Promotion of intrusion is inevitable.

  Thus, although the heat insulation performance is low in the vicinity of the freezer compartment door 8 as compared with the side surface and the back surface, there is a problem that heat loss occurs because the cold air convects the first gap.

  According to the present embodiment, it is possible to prevent the cool air from flowing into the first gap near the freezer compartment door 8 by attaching the seal member 26 that is a convection control unit, and the first near the freezer compartment door 8. The airtightness of the gap can be increased. That is, it is possible to suppress the air convection in the vicinity of the freezer compartment door 8 and to cause the air to disappear. Thereby, the invading heat is transmitted only by heat conduction to the air stagnating in the first gap near the freezer compartment door 8 and does not spread into the freezer compartment 4 by convection. Therefore, this stagnant air layer becomes a heat insulating layer, and an effect equivalent to that in which the first gap near the freezer compartment door 8 is substantially filled with a heat insulating material such as urethane can be obtained. For this reason, even if it is near the freezer compartment door 8 where it is difficult to enhance the heat insulating property by providing a heat insulating material or the like in terms of structure and design, a significant effect of improving the heat insulating performance can be obtained.

  That is, if this embodiment is used, it is possible to reinforce the heat insulating performance in the vicinity of the freezer compartment door 8 not provided with the heat insulating material as described above, and further, heat loss when the freezer compartment door 8 is opened and closed. In addition, when a heat source that is a countermeasure for preventing condensation is provided, it is possible to obtain an effect that heat reception from the heat source can be suppressed.

  In order to obtain a larger effect, as shown in FIG. 5, a freezer compartment case cover 28 is provided on the freezer compartment door 8 side from the seal member 26, and a structure including a seal member 26 as a convection control unit on the upper portion is also adopted. May be. Thereby, the 1st gap | interval of the freezer compartment door 8 vicinity can be sealed, and there exists an effect that the natural convection at the time of the refrigerator 100 stop can also be suppressed in this case. That is, it is possible to obtain an effect of suppressing the high-temperature air in the first gap that has risen due to buoyancy when the refrigerator 100 is stopped from spreading into the freezer compartment 4.

  Here, in order to examine the effect of this Embodiment 1, the numerical analysis of the freezer compartment 4 at the time of refrigerator 100 operation | movement was implemented. FIG. 6 is a result of simulating the amount of heat intrusion into the freezer compartment 4 from the condensation pipe 23 provided in the vicinity of the freezer compartment door 8 in the present embodiment. The vertical axis represents the ratio of the heat intrusion amount based on the heat intrusion amount in the conventional structure, and in the case of the structure of the first embodiment of the present invention shown in FIG. 3 and the implementation of the present invention shown in FIG. The amount of heat penetration when the freezer compartment case cover 28 is further provided on the freezer compartment upper case 11 in the first embodiment is shown. From FIG. 6, the remarkable effect of reducing the amount of heat penetration could be confirmed by using the present embodiment in which the airtightness of the first gap near the freezer door 8 is increased.

  Note that the seal member 26 serving as a convection control unit is shown in FIG. 3 from the upper surface to the bottom surface of the freezer upper case 11 and the freezer compartment lower case 12 in the second gap between the side outer surface of the drawer container and the freezer compartment side wall 25. However, as shown in FIG. 7, an energy saving effect can also be obtained by attaching a seal member 26 to a part thereof. In FIG. 7, the seal member 26 is attached to the height from the upper surface to the bottom surface on the side outer surface of the freezer compartment lower case 12, and the seal member 26 is not provided on the side outer surface of the freezer compartment upper case 11. However, since the air layer below the first gap near the freezer door 8 can be swollen, the same effect can be obtained.

  Further, even if the seal member 26 is provided as a convection control unit in the fourth gap between the upper surface of the freezer upper case 11 and the ceiling of the freezer compartment 4, the air above the first gap also accumulates, so that a higher effect is obtained. Is obtained. Furthermore, as shown in FIG. 5, if the upper case 11 of the freezer compartment is provided with a lid that covers the upper surface on the front side of the seal member 26 that is a convection control unit, the first gap near the freezer compartment door 8 is sealed. Therefore, a greater heat insulation effect can be obtained.

  The dimensions of the current standard 520L refrigerator are 1820 mm high, 680 mm wide, and 700 mm deep. Regarding the installation position of the convection control unit, in view of the fact that the present embodiment aims to generate an air layer in the first gap in the vicinity of the freezer compartment door 8 to confine heat, the installation position is at the door. The closer one is preferable, but, for example, about 100 mm from the inside of the door is desirable.

  Even if the position is 100 mm or less from the inside of the door, if the convection control unit is on the back side from the front outer surface of the drawer container, the cold air does not convection through the first gap. The effect of this embodiment can be obtained.

  Even if the convection control unit is outside the above range, that is, at a position of 100 mm or more from the inside of the door, the volume of the air layer is increased and the heat insulation performance is improved. A convection control unit may be provided.

  However, the further away from the inside of the door, the more the convection of the cold air circulating in the drawer container is suppressed, so it is desirable that the convection control unit is provided on the front side from the center of the drawer container.

  In the present embodiment, since the configuration as described above is adopted, the cool air does not convect the first gap on the freezer compartment door 8 side from the seal member 26 that is the convection control unit, and the air can be confined. The airtightness in the vicinity of the freezer compartment door 8 is improved, that is, the heat insulation performance in the vicinity of the freezer compartment door 8 having a low thermal insulation performance due to its structure is improved, and heat penetration from the periphery of the freezer compartment door 8 into the inside of the freezer compartment 4 can be suppressed. Energy saving effect.

  Further, the heat intrusion from the vicinity of the freezer compartment door 8 where a heat source is provided as a dew condensation prevention measure is generated by generating an air layer in the vicinity of the freezer compartment door 8 having a low heat insulation performance in this embodiment. Also has the effect of suppressing.

  Furthermore, in the present embodiment, there is an effect of suppressing heat intrusion and heat leakage when the freezer compartment door 8 is opened and closed by the air layer generated in the first gap.

  In the present embodiment, the seal member 26 is also provided in the third gap between the bottom surface of the freezer compartment lower case 12 and the freezer compartment floor surface 52. However, in order to prevent convection from flowing into the third gap, The bottom surface of the freezer compartment lower case 12 may be lowered so that the third gap between the case 12 and the floor surface of the freezer compartment 4 is reduced or brought into contact. By doing so, the effect of suppressing the convection of the cold air flowing from the vicinity of the freezer compartment door 8 to the third gap on the floor surface is obtained, that is, the first welcome airtightness in the vicinity of the freezer compartment door 8 can be improved. . At this time, the inside of the drawer container is cooled, and the cold air flowing out from the upper surface of the drawer container on the back side of the seal member 26 to the second gap between the side outer surface of the drawer container and the freezer compartment side wall 25 It passes through the second gap between the chamber side wall 25 to the back surface, returns to the cooler 20 provided on the back surface of the refrigerator 100 through the cold air inlet 24 provided on the inner back surface of the freezer compartment 4.

  Moreover, although the freezer compartment 4 was described in the present embodiment, the door, drawer container, cold air used in the present embodiment also in other rooms such as the switching chamber 2, the ice making chamber 3, the vegetable chamber 5, the refrigerator compartment 1 and the like. If the basic configuration including the air outlet, the cold air inlet, and the convection control unit does not change, the first embodiment can be implemented.

  In the present embodiment, the positional relationship between the rooms of the refrigerator 100 is described as shown in FIG. 1, but it goes without saying that the present invention can be similarly implemented even if the positional relationship between the rooms is changed.

Embodiment 2. FIG.
FIG. 8 is a cross-sectional view of the left half of the freezer compartment 4 according to Embodiment 2 of the present invention as viewed from the front. The right half has a structure folded in FIG. 8, that is, the freezer compartment 4 has a symmetrical cross-sectional structure when viewed from the front. FIG. 8 shows a convection control unit in which a freezer compartment upper case 11, a freezer compartment upper case projection 11 a that projects a part of the freezer compartment lower case 12, and a freezer compartment lower case projection 12 a are provided in the second gap. . The second embodiment of the present invention is characterized in that the convection control unit which is the seal member 26 in the first embodiment is the freezer compartment upper case protrusion 11a and the freezer compartment lower case protrusion 12a. The rest is the same as in the first embodiment. In FIG. 8, the third gap between the freezer compartment lower case 12 and the freezer compartment floor 52 is sufficiently narrow so that cold air does not convect.

  In the present embodiment, as shown in FIG. 8, a part of the outer side surfaces of the freezer upper case 11 and the freezer lower case 12 is protruded to form a convection control unit. FIG. 9 shows a perspective view of the freezer compartment 4 of FIG. 8 in the present embodiment as viewed from the back side. As shown in FIG. 9, the freezer upper case protrusion 11a is formed on a part of the side surface of the freezer upper case 11 in the vicinity of the freezer compartment door 8, and A freezer compartment lower case protrusion 12 a is provided, and a part of the second outer space between the outer side surface of the freezer compartment upper case 11 and the freezer compartment side wall 25, and the outer side surface of the freezer compartment lower case 12 and the freezer compartment side wall 25 is provided. It is a convection control unit that closes. Therefore, the distance between the freezer compartment upper case protrusion 11a or the freezer compartment lower case protrusion 12a and the freezer compartment side wall 25 is sufficiently narrow, and the convection of the first gap between the front outer surface of the drawer container and the freezer compartment door 8 is achieved. Can be suppressed.

  The third gap between the freezer compartment lower case 12 and the freezer compartment floor 52 in the present embodiment is structured to be narrow so that cold air does not convect in FIG. 8, but the seal member 26 is the same as in the first embodiment. It is good also as a structure which provides. Further, a protruding portion may be provided on a part of the floor surface of the freezer compartment lower case 12 on the freezer compartment door 8 side, that is, the protruding portions 12a formed on both side surfaces of the freezer compartment lower case 12 are continuous. The protrusion 12a may also be provided at the bottom of the freezer compartment lower case 12 on the floor side.

  In the present embodiment, the convection control unit is formed by projecting a part of the drawer container, and an effect of suppressing the convection of the cold air in the first gap between the freezer compartment door 8 and the drawer container front outer surface is obtained. That is, the airtightness in the vicinity of the freezer compartment door 8 can be improved, and the heat insulating property in the vicinity of the freezer compartment door 8 can be increased.

  In the present embodiment, the convection control unit is formed by projecting a part of the drawer container. However, as shown in the cross-sectional view of the left half when viewed from the front in FIG. It is good also as a convection control part by making it protrude and providing the side wall protrusion part 25a.

  FIG. 10 is a cross-sectional view of the left half viewed from the front direction when the freezer compartment side wall 25 is protruded. As shown in FIG. 10, the freezer compartment side wall 25 is provided with a side wall protrusion 25 a so as to have a shape along the freezer compartment upper case 11 and the freezer compartment lower case 12. Therefore, convection can be suppressed as in FIG. 8 in which the drawer container is protruded. The perspective view seen from the back side of FIG. 10 corresponds to the case where the freezer compartment upper case protrusion 11a and the freezer compartment lower case protrusion 12a in FIG. 9 are side wall protrusions 25a. Also in the structure of FIG. 10, since the airtightness of the first gap near the freezer compartment door 8 can be improved, the heat insulation around the freezer compartment door 8 can be improved, and an energy saving effect can be obtained.

  In this embodiment, since the convection control unit is formed by projecting a part of the drawer container or the freezer compartment side wall 25, it is not necessary to use new parts, and the freezer compartment door 8 is kept while suppressing an increase in cost. The heat insulation of the surroundings can be improved and an energy saving effect can be obtained.

  In the second embodiment of the present invention, portions different from the first embodiment of the present invention are described, and descriptions of the same or corresponding portions are omitted.

Embodiment 3 FIG.
FIG. 11: is a figure which shows sectional drawing of the left half seen from the front direction of the freezer compartment 4 which concerns on Embodiment 3 of this invention. The right half has a structure folded from FIG. 11, that is, the freezer compartment 4 has a symmetrical structure when viewed from the front. In the freezer compartment 4 shown in FIG. 11 in Embodiment 3 of the present invention, the case shape of the freezer upper case 11 and the freezer lower case 12 is processed into a case shape, and a part of the case shape on the side surface of the case is expanded. It has a case hollow structure 29 and is a convection control unit. The rest is the same as in the first or second embodiment.

  The perspective view of the freezer compartment 4 in the present embodiment as viewed from the back side corresponds to the case where the freezer compartment upper case protrusion 11a and the freezer compartment lower case protrusion 12a in FIG.

  The effect of the present embodiment is that air is confined in the case hollow structure 29, so that convection can be more reliably suppressed in the portion corresponding to the first gap near the freezer compartment door 8, and the refrigerator Even when 100 is stopped, air rise due to buoyancy does not occur in the portion inside the case hollow structure 29. Thereby, about the case hollow structure 29 part, the heat insulation effect equivalent to heat insulating materials, such as urethane, can be anticipated, and energy-saving property can be improved.

  In addition, although the case hollow structure 29 of this Embodiment decided to confine air, the inside of the case hollow structure 29 may be satisfy | filled with heat insulating materials, such as urethane.

  Further, as shown in the cross-sectional view of the left half viewed from the front side of the freezer compartment 4 shown in FIG. 12, reinforcing ribs (dotted lines in FIG. 12) may be provided on the case hollow structure 30 to reinforce the strength. No. Further, the reinforcing rib can be expected to prevent convection generated in the case hollow structure 30. The position of the rail 13 may be provided in any height direction.

  In the third embodiment of the present invention, portions that are different from the first or second embodiment of the present invention are described, and descriptions of the same or corresponding portions are omitted.

DESCRIPTION OF SYMBOLS 1 Refrigeration room 2 Switching room 3 Ice making room 4 Freezing room 5 Vegetable room 6 Refrigeration room door 7 Switching room door 8 Freezing room door 9 Vegetable room door 10 Switching room case 11 Freezing room upper case 11a Freezing room upper case protrusion 12 Freezing room Lower case 12a Freezer compartment lower case protrusion 13 Rail 14 Vegetable compartment upper case 15 Vegetable compartment lower case 16 Switching compartment outlet 17 Freezer compartment upper outlet 18 Freezer compartment lower outlet 19 Fan 20 Cooler 21 Defroster 22 Compressor DESCRIPTION OF SYMBOLS 23 Condensation pipe 24 Cold air inlet 25 Freezer compartment side wall 25a Side wall protrusion part 26 Seal member 28 Freezer compartment case cover 29 Case hollow structure 30 Case hollow structure with a reinforcing rib 50 Refrigerating room floor surface 51 Switching room floor surface 52 Freezer room floor surface 53 Vegetable room floor 56 Cold room case 100 Refrigerator

Claims (16)

A cooling chamber whose front surface is open and whose inner wall surface is a floor surface, a back surface and a side surface;
A door that is openable and closable on the front surface of the cooling chamber;
A drawer container provided in the cooling chamber and having an open top surface;
A suction port for sucking air from the cooling chamber, which is provided on the inner rear surface of the cooling chamber and below the upper surface of the drawer container;
A cooler for cooling the air sucked through the suction port;
A blowout port for blowing out the air cooled by the cooler into the container;
The cooled air overflowing from the upper surface of the drawer container descends between the side surface of the cooling chamber and the outer side surface of the drawer container, flows to the back side and is sucked in the suction port. A convection control unit that convects the cooled air and suppresses convection of the cooled air overflowing from the upper surface of the drawer container into the first gap between the inside of the door and the front outer surface of the drawer container. And a refrigerator. The refrigerator according to claim 1, wherein the convection control unit is provided in a second gap between an outer side surface of the drawer container and a side surface of the cooling chamber. The refrigerator according to claim 2, wherein the convection control unit is further provided in a third gap between a bottom surface of the drawer container and a floor surface of the cooling chamber. The refrigerator according to claim 2 or 3, wherein the convection control unit is located on the front side from the center of the drawer container. The refrigerator according to any one of claims 2 to 4, wherein the convection control unit is formed up to a height of an upper surface of the drawer container in the second gap. The said convection control part consists of a film-shaped sealing member, The one side is affixed on either one of the said drawer | drawing-out container or the said cooling chamber, The any one of Claim 2 to 5 characterized by the above-mentioned. Refrigerator. The refrigerator according to any one of claims 2 to 5, wherein the convection control unit is made of a stick-shaped seal member and is fixed to either the drawer container or the cooling chamber. The refrigerator according to any one of claims 2 to 5, wherein the convection control unit is a protruding portion of the drawer container. The refrigerator according to any one of claims 2 to 5, wherein the convection control unit is a protruding portion of a side surface or a floor surface of the cooling chamber. The refrigerator according to any one of claims 2 to 5, wherein the convection control unit is formed such that a part of the drawer container has a hollow structure. The refrigerator according to claim 10, wherein a reinforcing rib is provided inside the hollow structure. The refrigerator according to any one of claims 2 to 7, wherein the convection control unit is provided in a fourth gap between the upper surface of the drawer container and the ceiling of the cooling chamber. The refrigerator according to any one of claims 1 to 12, wherein the drawer container includes a lid that covers an upper surface on a front side of the convection control unit. The refrigerator according to any one of claims 1 to 13, wherein the drawer container has a two-stage structure. The refrigerator according to any one of claims 1 to 14, wherein the cooling room is any one of a freezing room, a switching room, an ice making room, and a vegetable room. The refrigerator according to any one of claims 1 to 15, further comprising a fan that feeds air cooled by the cooler into the refrigerator.

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