WO2020157852A1

WO2020157852A1 - Refrigerator

Info

Publication number: WO2020157852A1
Application number: PCT/JP2019/003119
Authority: WO
Inventors: 真鎖伸前川
Original assignee: 三菱電機株式会社
Priority date: 2019-01-30
Filing date: 2019-01-30
Publication date: 2020-08-06
Also published as: JPWO2020157852A1

Abstract

An objective of the present invention is to obtain a refrigerator in which cold-induced condensation on the door is suppressed, and which is easy to manufacture. The present invention comprises: a dividing wall that divides a first storage compartment and a second storage compartment, from among a plurality of storage compartments, disposed vertically adjacent to one another; and an insulating sheet attached to the dividing wall. The divider wall comprises: a wall structural member forming a lower surface of the first storage compartment and an upper surface of the second storage compartment; and a dividing wall front panel, which is attached to an end, of the wall structural member, on a front surface side of the refrigerator body and which forms an end surface, of the divider wall, on the front surface side of the refrigerator body. A door comprises: a gasket which is attached to a door inner surface constituted by a side, of the door, that faces the first storage compartment, and which seals off the first storage compartment when the door is closed; and a throat which is positioned inside the gasket on the door inner surface and which projects toward the first storage compartment. When the door is closed, the dividing wall front panel contacts the gasket, the divider wall front panel and the end of the wall structural member together form a space in which a heating means is disposed, and the insulating sheet is affixed to the portion, of the lower surface of the first storage compartment, that is below the throat.

Description

refrigerator

The present invention relates to a refrigerator, and relates to a structure for suppressing dew on the door of a storage room.

In a freezer-freezer, there is a large temperature difference between the freezer and the outside air, and dew easily forms on the door. The door of the freezer compartment has a gasket attached to the surface facing the freezer compartment so that cold air in the freezer compartment does not leak out. The lower end surface of the freezer compartment door is a partition wall front plate at the end surface on the front side of the partition wall, where cold air in the freezer compartment penetrates into the gasket side between the throat and the upper surface of the partition wall forming the bottom surface of the freezer compartment. Lower the temperature. Therefore, the temperature of the lower end surface of the freezer compartment door is lowered by heat conduction from the partition wall front plate, and dew is generated on the surface of the door whose temperature is lower than the dew point temperature. Such invasion of cold air causes not only dew condensation but also loss when cold air circulates in the freezing compartment, which leads to deterioration of energy saving efficiency.

In Patent Document 1, the freezer compartment door has a second seal member located inside the freezer compartment with respect to the gasket as the first seal member. The second seal member is formed by integrally molding soft plastic and hard plastic. The door of the freezing room has a throat protruding toward the freezing room side, and a fixing member for mounting the second seal member is provided at a lower portion of the throat. The fixing member has a hollow portion and is configured so that the second sealing member hard plastic portion can be mounted therein. The hollow portion has a gap between the hard plastic and the hard plastic so that the hard plastic can move. With the above configuration, the second seal member can swing in the front-back direction in the refrigerator. Further, the partition wall forming the bottom surface of the freezer compartment is provided with a convex portion projecting inward of the freezer compartment on the upper surface thereof, and the soft plastic forming the second seal member when the door of the freezer compartment is closed. And the inside of the freezer is sealed.

In Patent Document 2, the thickness of the upper partition plate is recessed to 10 to 50% on the upper surface of the upper partition plate that constitutes the partition wall for the purpose of suppressing heat intrusion from the opening of the partition wall into the freezer compartment. A thermal edge is provided. A front heat insulating member (foamed polyethylene or the like) is fixed to the upper partition plate so as to cover the exposure of the thermal rim cutting portion toward the freezer compartment.

JP, 2003-172566, A JP, 2015-48953, A

The sealing structure by the second sealing member shown in Patent Document 1 has a rigid hard plastic for fixing and an integrally molded product of rocking hard plastic and soft plastic at the lower part of the throat, and a convex portion on the upper surface of the partition wall. It has many parts. Therefore, the refrigerator is high in cost, has a complicated structure, and is likely to have a problem.

In the structure shown in Patent Document 2, the freezer-side end of the front heat insulating member is located on the deeper side of the freezer than the tip of the throat. Therefore, there is a concern that the cold air that has fallen onto the front heat insulating member along the throat may enter the metal abutting member forming the front end surface of the partition wall and the gasket attached to the door. Further, since the upper partition plate is provided with the thermal edge cut portion, the resin flowability of the upper partition plate is impeded during resin molding, and a problem is likely to occur during molding.

The present invention is intended to solve the above problems, and an object thereof is to obtain a refrigerator that is easy to manufacture while suppressing dew on the door due to cold air.

The refrigerator of the present invention includes a refrigerator main body having a plurality of storage chambers, a door provided on the front surface of the refrigerator main body and closing the plurality of storage chambers, and the upper and lower sides of the plurality of storage chambers are vertically adjacent to each other. A partition wall for partitioning between the first storage chamber and the second storage chamber; and a heat insulating sheet attached to the partition wall, wherein the partition wall includes the lower surface of the first storage chamber and the first storage chamber. No. 2 wall structural member that forms the upper surface of the storage chamber, and a partition wall front plate that is attached to the end of the wall structural member on the front side of the refrigerator body and that constitutes the end surface of the partition wall on the front side of the refrigerator body. And a gasket attached to an inner surface of the door, which is a surface of the door facing the first storage chamber, and closing the first storage chamber when the door is closed; A throat that is located inside the gasket on the inner surface of the door and projects toward the first storage chamber; and the partition wall front plate contacts the gasket when the door is closed, The partition wall front plate and the end portion of the wall structural member are combined to form a space for arranging the heating means, and the heat insulating sheet is provided below the throat in the lower surface of the first storage chamber. It is fixed.

According to the present invention, by having the above-mentioned configuration, it is possible to prevent cold air from the freezing compartment that has fallen on the partition wall from entering the space between the partition wall front plate and the wall structural member. Then, the cool air is prevented from reaching the heating means through the gap between the partition wall front plate and the wall structural member. Further, by fixing the heat insulating sheet on the lower side surface of the freezing compartment and below the throat, heat insulation is increased and heat from the heating means is not released by heat conduction from the wall structural member. Therefore, the temperature of the front wall of the partition wall rises and the temperature of the door of the freezer compartment also rises, so that dew condensation is suppressed. Since the structure has a simple structure in which the heat insulating sheet is only fixed at a predetermined position, it is possible to obtain a refrigerator that is easy to manufacture and costs while suppressing dew condensation.

FIG. 3 is a perspective view of the refrigerator according to the first embodiment. It is sectional drawing of the refrigerator which concerns on Embodiment 1. It is an enlarged view of the A section of FIG. It is a perspective view inside the freezer compartment of the refrigerator concerning Embodiment 1. FIG. 3 is a perspective view of a front end portion of a partition wall of the refrigerator according to the first embodiment. FIG. 5 is an enlarged cross-sectional view around a front end portion of a partition wall as a comparative example of the refrigerator according to the first embodiment. It is an expanded sectional view of the front end part periphery of the partition wall of the refrigerator which concerns on Embodiment 1. It is explanatory drawing of the installation position of the heat insulation sheet of the refrigerator which concerns on Embodiment 1. The result of the thermo-fluid analysis inside the freezer compartment of the comparative example of the refrigerator according to the first embodiment is shown. The result of the thermofluid analysis inside the freezer compartment of the refrigerator which concerns on Embodiment 1 is shown. It is a figure which shows the temperature distribution inside the freezer compartment of FIG. It is a figure which shows the temperature distribution inside the freezer compartment of FIG.

The following describes an embodiment of the refrigerator according to the present invention. It should be noted that the form of the drawings is an example and does not limit the present invention. In addition, the same reference numerals in the drawings denote the same or corresponding ones, which are common to all the texts of the specification. Further, in the following drawings, the size relationship of each component may be different from the actual one.

Embodiment 1.
FIG. 1 is a perspective view of the refrigerator 100 according to the first embodiment. The refrigerator main body 1 includes a box body 13 whose inside is divided into a plurality of storage chambers. The inside of the box 13 has a refrigerating compartment 2, an ice making compartment 3, a switching compartment 4, a freezing compartment 5, and a vegetable compartment 6 in order from the top. In the following description, the refrigerating compartment 2, the ice making compartment 3, the switching compartment 4, the freezing compartment 5, and the vegetable compartment 6 may be referred to as storage compartments. Each of the plurality of storage chambers is closed by a door attached to the box body 13 so as to be freely opened and closed. The refrigerating compartment 2 is closed by a left refrigerating compartment door 7 and a right refrigerating compartment door 8 which can be opened and closed. The ice making chamber 3 is closed by an ice making chamber door 9, the switching chamber 4 is closed by a switching chamber door 10, the freezing chamber 5 is closed by a freezing chamber door 11, and the vegetable chamber 6 is closed by a vegetable chamber door 12. In the following description, each of the left refrigerating compartment door 7, the right refrigerating compartment door 8, the ice making compartment door 9, the switching compartment door 10, the freezing compartment door 11, and the vegetable compartment door 12 may be referred to as a door. However, the arrangement of the storage rooms is not limited to the above. For example, a three-door refrigerator in which the refrigerator compartment 2, the vegetable compartment 6, and the freezer compartment 5 are arranged in this order from the top, or a two-door refrigerator in which only the refrigerator compartment 2 and the freezer compartment 5 are arranged may be used. Further, in the refrigerator 100, the side on which the door is installed is referred to as the front surface, and the surface opposite to the front surface is referred to as the back surface, and the front surface side is referred to as the front and the back surface side is referred to as the rear or the back.

The box 13 in which a plurality of storage chambers are formed is covered with an outer box 14 in which the top and side surfaces of the box 13 are integrally formed. Urethane, which serves as a heat insulating material, is filled between the storage box and the inner box 15 forming the inner wall of each storage chamber.

FIG. 2 is a sectional view of the refrigerator 100 according to the first embodiment. Inside the refrigerating room 2, a shelf 2a on which a stored item is placed, a chilled room 2b, and the like are installed. A shelf 2c is installed on the surface of the right refrigerating compartment door 8 facing the refrigerating compartment 2 side. Although not shown in FIG. 2, the left refrigerating compartment door 7 is also provided with a shelf 2c in the same manner.

The switching chamber 4 has a switching chamber case 4a disposed therein, and the switching chamber case 4a can be pulled out from the switching chamber 4 by pulling the switching chamber door 10. The freezing chamber 5 has an upper freezing case 16 and a lower freezing case 17 arranged therein. By pulling the freezing compartment door 11, the upper freezing case 16 and the lower freezing case 17 can be pulled out from the inside of the freezing compartment 5. In the vegetable compartment 6, a vegetable compartment case 18 and a vegetable compartment case 19 are arranged inside. By pulling the vegetable compartment door 12, the vegetable compartment case 18 and the vegetable compartment case 19 can be pulled out from the inside of the vegetable compartment 6. The door that closes each storage chamber has a gasket 28. The gasket 28 is attached to the surface of each door facing the storage chamber, contacts the front end surface of the refrigerator body 1, and suppresses leakage of cold air from the storage chamber and intrusion of heat from the outside. Is.

The refrigerator 100 has a cooler 20 on the back side of the freezer compartment 5. An air passage for sending the air cooled by the cooler 20 (cool air) to the storage chamber is formed on the back side of the refrigerating chamber 2, the switching chamber 4, and the freezing chamber 5. A fan 21 is arranged in the air passage, and the fan 21 sends cool air upward. Further, a compressor 22 that compresses the refrigerant in the refrigeration cycle circuit is arranged in the lower portion on the back side of the refrigerator 100.

Next, taking the freezer compartment 5 as an example, a structure for suppressing dew condensation on the freezer compartment door 11 will be described. The freezer compartment 5 and the vegetable compartment 6 described below may be referred to as a first storage compartment and a second storage compartment, respectively. In other words, among the vertically adjacent storage chambers, the upper storage chamber may be referred to as the first storage chamber, and the lower storage chamber may be referred to as the second storage chamber. As shown in FIG. 2, an air outlet 23 and a return port 24 for circulating cold air inside the freezing compartment 5 are provided on the inner surface of the freezing compartment 5. The cool air generated by the cooler 20 is sent out to the inside of the freezer compartment 5 from the air outlet 23, passes between the partition wall 25 between the switching compartment 4 and the freezer compartment 5 and the upper freezer case 16, and the freezer compartment door. It flows toward 11 side. Then, the cool air descends downward along the inner plate 26 forming the inner surface of the freezer compartment door 11, passes between the lower freezing case 17 and the partition wall 25, and returns to the return port 24.

FIG. 3 is an enlarged view of part A of FIG. The freezer compartment door 11 includes an inner plate 26, a gasket 28, a door cap 29, and a door plate 30. The door plate 30 is located on the front surface of the refrigerator 100 and constitutes the appearance of the refrigerator 100. The door cap 29 is attached to the lower end portion of the door plate 30, and constitutes the lower end surface of the freezer compartment door 11. The inner plate 26 constitutes a door inner surface which is a surface of the freezer compartment door 11 facing the freezer compartment 5 side. The freezer compartment door 11 is filled with urethane as a heat insulating material 31 in a region surrounded by the inner plate 26, the door cap 29, and the door plate 30.

The inner plate 26 has a throat 27 projecting toward the inside of the freezer compartment 5 at the lower part. The throat 27 is located with a gap between it and the wall structural member 32 forming the lower surface of the freezing chamber 5. Further, the inner surface of the freezer compartment door 11 is provided with a gasket 28 that contacts the front end surface of the partition wall 25 and closes the freezer compartment 5. In the cross section shown in FIG. 3, the throat 27 is located above the gasket 28. When the freezer compartment door 11 is viewed from the freezer compartment 5 side, the throat 27 is located inside the gasket 28, that is, near the center of the freezer compartment door 11. The gasket 28 is filled with urethane as a heat insulating material 31.

The partition wall 25 is provided with an upper surface of the partition wall 25, that is, a wall structural member 32 forming the lower surface of the freezer compartment 5, and a lower surface of the partition wall 25, that is, a wall structural member 33 forming the upper surface of the vegetable compartment 6. The space between the wall structural member 32 and the wall structural member 33 is filled with urethane as the heat insulating material 31.

A partition wall front plate 34 is attached to an end of the wall structural member 32 on the front side of the refrigerator 100. The partition wall front plate 34 has an upper end portion and a lower end portion projecting toward the back surface side of the refrigerator 100 in a cross section, and the projecting portion is inserted into the front end portion of the wall structural member 32 to be attached. A condenser pipe 35 is installed in the space surrounded by the end portion of the wall structural member 32 and the partition wall front plate 34 to prevent dew condensation. The condenser pipe 35 is provided on the wall structural member 32 side, that is, on the rear side of the refrigerator 100. A cushioning material 36 is arranged, and a heat retaining sheet 37 for retaining heat is arranged on the partition wall front plate 34 side of the condenser pipe 35. The condenser pipe 35 is also referred to as heating means.

A heat insulating sheet 44 is attached and fixed to the upper surface of the wall structural member 32. The heat insulating sheet 44 is located below the throat 27 of the freezer compartment door 11, and is located closer to the front side of the refrigerator 100 than the tip of the throat 27 protruding toward the inner side of the freezer compartment 5. The upper surface of the heat insulating sheet 44 is located with a predetermined gap between it and the throat 27.

FIG. 4 is a perspective view of the inside of the freezer compartment 5 of the refrigerator 100 according to the first embodiment. FIG. 4 is a view showing a state in which the freezing compartment door 11, the upper freezing case 16 and the lower freezing case 17 are removed from the freezing compartment 5. The heat insulating sheet 44 is attached over the entire width of the lower surface of the freezer compartment 5. Further, the heat insulating sheet 44 is located above the front end portion of the partition wall 25 in which the condenser pipe 35 is arranged. The heat insulating sheet 44 has a role of heat insulation that prevents the heat of the condenser pipe 35 from escaping to the inside of the freezing chamber 5, and a sealing material that suppresses the cold air circulating inside the freezing chamber 5 from flowing to the gasket 28 side. Have a role as.

FIG. 5 is a perspective view of the front end of the partition wall 25 of the refrigerator 100 according to the first embodiment. FIG. 5 shows a state in which the partition wall front plate 34, the condenser pipe 35, the cushioning material 36, and the heat insulating sheet 37 are removed from the partition wall 25. In the end portion on the front surface side of the wall structural member 32 forming the upper surface of the partition wall 25, the upper end portion 60a and the lower end portion 60b project to the front surface side in the cross section shown in FIG. A wall portion 62 is provided between the upper end portion 60a and the lower end portion 60b. A windbreak sheet 45 is attached to the lower surface 61, which is the lower surface of the upper end portion 60a protruding at the front end portion of the wall structural member 32. On the lower surface 61 of the upper end portion 60 a, the windbreak sheet 45 is attached to a part of the lower surface 61 in the width direction. The partition wall front plate 34 is fitted and fixed between the upper end portion 60a and the lower end portion 60b. The windbreak sheet 45 closes the gap 39 formed between the partition wall front plate 34 and the lower surface 61 of the upper end portion 60 a of the wall structural member 32. The windbreak sheet 45 is made of a material that can expand and contract according to the size of the gap 39, and is made of, for example, a resin material containing bubbles. When the windbreak sheet 45 is made of a resin material containing air bubbles, it is desirable to use not the open air bubbles but the closed air bubbles so as not to let air pass.

FIG. 6 is an enlarged cross-sectional view around the front end of the partition wall 25 as a comparative example of the refrigerator 100 according to the first embodiment. FIG. 6 is an enlarged view of the periphery of the gasket 28 as compared with FIG. In the comparative example, the heat insulating sheet 44 is not arranged on the upper surface of the partition wall 25, and the windshield that closes the gap 39 generated between the partition wall front plate 34 and the lower surface 61 of the upper end portion 60a of the wall structural member 32. The seat 45 is also not installed. Therefore, the flow 38 of the cool air that has descended along the inner plate 26 of the freezer compartment door 11 reaches the upper surface of the partition wall 25 via the tip of the throat 27. A part of the flow 38 of the cool air flows to the front side of the freezer compartment 5 and hits the gasket 28. Further, the flow of the cool air reaching the gasket 28 flows into the gap 39 formed between the partition wall front plate 34 and the lower surface 61 of the upper end portion 60 a of the wall structural member 32.

The partition wall front plate 34 has a structure in which it is fitted and fixed to the front end of the wall structural member 32. Since the structure in which the partition wall front plate 34 is fitted into the wall structural member 32 extends over the entire width of the freezing chamber 5, there is a portion between the partition wall front plate 34 and the lower surface 61 of the upper end portion 60a of the wall structural member 32. A gap 39 is generated. Therefore, the cold air that has reached the periphery of the gasket 28 enters the space inside the front end of the partition wall 25 through the gap 39. A condenser pipe 35 is arranged in the internal space, and cool air reaches the condenser pipe 35.

The condenser pipe 35 heats up and heats the gasket 28, the lower end of the freezer compartment door 11 and the surrounding air by heat conduction to prevent dew condensation. In the comparative example, when the condenser pipe 35 generates heat, there are two paths 41, which is heat conduction to the air passing through the gap 39, and a path 42 which is thermally conducted to the inside of the freezer compartment 5 via the wall structural member 32. The heat is transmitted through the path, and the heat generated by the condenser pipe 35 is not sufficiently transmitted to the partition wall front plate 34 and escapes into the freezer compartment 5. As a result, the temperature of the door cap 29 does not rise sufficiently, so that the lower end surface 43 of the freezer compartment door 11 is condensed.

FIG. 7 is an enlarged cross-sectional view around the front end portion of the partition wall 25 of the refrigerator 100 according to the first embodiment. In FIG. 7, the periphery of the gasket 28 is further enlarged and displayed as compared with FIG. In the refrigerator 100 according to the first embodiment, the flow 38 of the cool air that has descended along the inner plate 26 of the freezer compartment door 11 reaches the upper surface of the partition wall 25 via the tip of the throat 27. A part of the cold air flow 38 flows to the front surface side of the freezer compartment 5, but hits the heat insulating sheet 44, and the flow of the cold air to the gasket 28 side is blocked. Further, even if the flow of the cool air reaches the gasket 28, the gap 39 formed between the partition wall front plate 34 and the lower surface 61 of the upper end portion 60a of the wall structural member 32 is blocked by the windbreak sheet 45. The cold air does not reach the condenser pipe 35.

Further, by attaching the heat insulating sheet 44 to the upper surface of the partition wall 25, particularly to the upper surface of the tip end portion of the partition wall 25 in which the capacitor pipe 35 is arranged, the heat of the capacitor pipe 35 is transmitted through the wall structure member 32. Escape to the inside of the freezer compartment 5 is suppressed.

Further, the heat insulating sheet 44 also has a function of receiving juice so that when liquid such as food juice is spilled in the freezer compartment 5, it does not leak out from the freezer compartment 5.

FIG. 8 is an explanatory diagram of the installation position of the heat insulating sheet 44 of the refrigerator 100 according to the first embodiment. The optimal arrangement and dimensions of the heat insulating sheet 44 will be described with reference to FIG. It is desirable that the heat insulating sheet 44 has a size as large as possible for the purpose of preventing cold air from entering and heat insulating. The size of the heat insulating sheet 44 in the width direction of the refrigerator is preferably the entire width of the freezing compartment. The size of the heat insulating sheet 44 in the height direction from the partition wall 25 is in contact with the lower freezing case 17 and the throat 27 in consideration of the lowering of the freezing room door 11 and the lower freezing case 17 when the freezing room door 11 is pulled out. It is desirable to make it as high as possible within the range not to do.

The end surface of the heat insulating sheet 44 located on the front surface side of the refrigerator 100 is configured to be located on the most front surface side in a range where it does not come into contact with the gasket 28 when the freezer compartment door 11 is closed. The end surface of the heat insulating sheet 44 on the inner side of the freezer compartment 5 is preferably arranged at the position shown in FIG. 8 as an optimum position for heat insulation and prevention of cold air intrusion. That is, the corner located at the upper end of the end surface of the heat insulating sheet 44 on the far side of the freezing compartment 5 is an extension of the virtual tangent 49 when the virtual tangent 49 is drawn at the midpoint of the curved surface 48 on the lower side of the tip of the throat 27. It is desirable to be located on the line. The curved surface 48 is a cylindrical surface and has an arc shape in cross section. However, the curved surface 48 is not limited to a cylindrical surface, and may be a curved surface such as an elliptic cylindrical surface.

In the refrigerator 100 shown in FIG. 8, the angle 51 formed by the lower surface 50 of the throat 27 and the virtual tangent 49 is about 45 degrees. The flow of cool air that descends along the surface of the throat 27 leaves the surface of the throat 27 at the midpoint of the lower curved surface 48 of the throat 27. Then, the flow of cool air flows below the virtual tangent line 49. Since the end surface of the heat insulating sheet 44 on the back side of the freezing chamber 5 is located on the extension line of the virtual tangent line 49, the cold air flowing below the virtual tangent line 49 hits the heat insulating sheet 44 and moves toward the back side of the freezing chamber 5. It will flow. When the end surface of the heat insulating sheet 44 on the inner side of the freezing compartment 5 is located on the inner side of the freezing compartment 5 with respect to the virtual tangent line 49, cold air easily flows between the upper surface of the heat insulating sheet 44 and the lower surface of the throat 27. .. Therefore, by arranging the end surface of the heat insulating sheet 44 on the inner side of the freezing chamber 5 on the extension line of the virtual tangent line 49, the heat insulating effect on the upper surface of the wall structural member 32 is increased and the invasion of cold air into the gasket side is reduced. can do.

FIG. 9 shows a result of thermofluid analysis inside the freezer compartment 5 of the comparative example of the refrigerator 100 according to the first embodiment. FIG. 10 shows the results of thermofluid analysis inside the freezer compartment 5 of the refrigerator 100 according to the first embodiment. In the comparative example shown in FIG. 9, the end surface of the heat insulating sheet 44 on the back side of the freezing chamber 5 is located on the back side of the tip of the throat 27. In the case of the heat insulating sheet 44 shown in FIG. 9, the heat insulation of the upper surface of the wall structural member 32 is improved, but the cold air that has dropped onto the heat insulating sheet 44 is likely to enter the gasket 28 side. On the other hand, in the refrigerator 100 according to the first embodiment shown in FIG. 10, the cool air that has descended along the throat 27 hits the heat insulating sheet 44 and is less likely to flow to the gasket 28 side.

In Figs. 9 and 10, a large arrow indicates a place where more cool air flows. Comparing FIG. 9 and FIG. 10, in FIG. 9, more cool air flows between the heat insulating sheet 44 and the throat 27. Comparing at the air volume measurement point 52 located between the heat insulating sheet 44 and the throat 27, the air volume of FIG. 10 is about 73% smaller than that of FIG. 9.

FIG. 11 is a diagram showing the temperature distribution inside the freezer compartment 5 of FIG. FIG. 12 is a diagram showing the temperature distribution inside the freezer compartment 5 of FIG. The temperature contour lines are shown in FIGS. 11 and 12, and the difference in temperature distribution depending on the dimensions of the heat insulating sheet 44 can be seen. 11 and 12, it is shown that the temperature of the door plate 30 of the freezer compartment door 11 and the vegetable compartment 6 side is high, and the temperature inside the freezer compartment 5 is low, as indicated by (1) in the drawings. The temperature contour line has a high temperature, and the temperature contour line indicated by (2) in the figure has a low temperature. At the temperature measurement point 53 of the door cap 29 of the freezer compartment door 11, the temperature was confirmed by both the thermal fluid analysis and the actual machine test, and it was confirmed that the temperature in FIG. 10 was higher than that in FIG. 9 by about 0.1K. It was That is, the corner of the end surface of the heat insulating sheet 44 on the back side of the freezing chamber 5 is located on the extension line of the virtual tangent line 49 when the virtual tangent line 49 is drawn at the midpoint of the lower curved surface 48 of the throat 27. desirable.

Although the present invention has been described above based on the embodiments, the present invention is not limited to the configurations of the above-described embodiments. For example, the component structure of the door of the refrigerator 100 can be appropriately changed. The structure for suppressing the dew condensation on the lower end of the freezer compartment door 11 described above can be applied to other storage compartments. In particular, it may be applied to a storage room having a low internal temperature such as the ice making room 3. In short, it should be added that the scope of the present invention (technical scope) also includes various modifications, applications, and uses that are required by those skilled in the art.

1 refrigerator body, 2 refrigerating room, 2a shelf, 2b chilled room, 2c shelf, 3 ice making room, 4 switching room, 4a switching room case, 5 freezing room, 6 vegetable room, 7 left refrigerating room door, 8 right refrigerating room door , 9 ice making room doors, 10 switching room doors, 11 freezing room doors, 12 vegetable room doors, 13 boxes, 14 outer boxes, 15 inner boxes, 16 upper freezing cases, 17 lower freezing cases, 18 vegetable room cases, 19 vegetables Room case, 20 cooler, 21 fan, 22 compressor, 23 outlet, 24 return port, 25 partition wall, 26 inner plate, 27 throat, 28 gasket, 29 door cap, 30 door plate, 31 heat insulating material, 32 wall Structural member, 33 wall structural member, 34 partition wall front plate, 35 condenser pipe, 36 cushioning material, 37 heat insulating sheet, 39 gap, 41 route, 42 route, 43 lower end face, 44 heat insulating sheet, 45 windproof sheet, 48 curved surface, 49 virtual tangents, 50 lower surface, 51 angle, 52 air volume measuring point, 53 temperature measuring point, 60a upper end, 60b lower end, 61 lower surface, 62 wall section, 100 refrigerator.

Claims

A refrigerator body having a plurality of storage compartments,
A door provided on the front surface of the refrigerator body for closing the plurality of storage chambers,
A partition wall partitioning between a first storage chamber and a second storage chamber that are vertically adjacent to each other among the plurality of storage chambers;
A heat insulating sheet attached to the partition wall,
The partition wall is
A wall structural member forming a lower surface of the first storage chamber and an upper surface of the second storage chamber;
A partition wall front plate that is attached to an end portion of the wall structure member on the front surface side of the refrigerator main body and constitutes an end surface of the partition wall on the front surface side of the refrigerator main body;
The door is
A gasket attached to the inner surface of the door, which is the surface of the door facing the first storage chamber, and closing the first storage chamber when the door is closed;
A throat that is located inside the gasket on the inner surface of the door and that projects toward the first storage chamber;
The partition wall front plate,
Contact with the gasket when the door is closed,
The partition wall front plate and the end portion of the wall structural member,
Combined to form a space for placing the heating means,
The heat insulating sheet is
A refrigerator fixed to the lower surface of the first storage chamber below the throat.
The partition wall is
Further comprising a windbreak sheet fixed to the end of the wall structure member,
The windproof sheet,
The refrigerator according to claim 1, which is arranged in a gap between the wall structural member and the partition wall front plate.
A refrigerator body having a plurality of storage compartments,
A door provided on the front surface of the refrigerator body for closing the plurality of storage chambers,
A partition wall partitioning between a first storage chamber and a second storage chamber that are vertically adjacent to each other among the plurality of storage chambers;
A windbreak sheet fixed to the partition wall,
The partition wall is
A wall structural member forming a lower surface of the first storage chamber and an upper surface of the second storage chamber;
A partition wall front plate that is attached to an end portion of the wall structure member on the front surface side of the refrigerator main body and constitutes an end surface of the partition wall on the front surface side of the refrigerator main body;
The door is
A gasket attached to the inner surface of the door, which is the surface of the door facing the first storage chamber, and closing the first storage chamber when the door is closed;
A throat that is located inside the gasket on the inner surface of the door and that projects toward the first storage chamber;
The partition wall front plate,
Contact with the gasket when the door is closed,
The partition wall front plate,
It is fitted into the end portion of the wall structural member, and forms a space for disposing the heating means between the end portion of the wall structural member and
The windproof sheet,
A refrigerator arranged between the wall structural member and the partition wall front plate.
Further comprising a heat insulating sheet attached to the partition wall,
The heat insulating sheet is
The refrigerator according to claim 3, which is fixed below the throat on the lower surface of the first storage chamber.
The end surface of the heat insulating sheet located on the back side of the first storage chamber is
The refrigerator according to claim 1, wherein the refrigerator is located on the front side of the first storage chamber with respect to the tip of the throat.
The corner located at the upper end of the end surface of the heat insulating sheet located on the back side of the first storage chamber is
The refrigerator according to claim 1, wherein the refrigerator is located on the front side of the first storage chamber with respect to an imaginary tangent line drawn from the center of the lower curved surface of the throat tip.
The wall structural member is
The upper end and the lower end protrude forward,
The partition wall front plate,
Fitted between the upper end and the lower end of the wall structural member,
The windproof sheet,
The refrigerator according to any one of claims 2 to 4, which is attached and fixed to a lower surface of the upper end portion.
The windproof sheet,
The refrigerator according to any one of claims 2, 3, 4, or 7, which is made of a material having closed cells.