JP5182408B2 - refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator that can prevent a heat insulation material from leaking out as the material is being filled in a heat insulation box and into the hollow portion of a partition, thus improving the appearance. <P>SOLUTION: The refrigerator includes: the heat insulation box composing an outer wall; a partition 218 mounted to the heat insulation box, and partitioning the inner space of the heat insulation box; and the heat insulation material integrally filled inside the heat insulation box as well as inside the partition 218. The partition 218 is provided with a flange 226 that goes along the inner surface of the heat insulation box and continuously extends from the peripheral edge. The flange 226 is provided with a duct pressing portion 304 for covering the front surface and the side face of a duct for blowing cold air. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a refrigerator, and more particularly to a partition structure in which a heat insulating material is filled integrally with a heat insulating box.

  In recent years, refrigerators are required to be more energy-saving from the viewpoint of protecting the global environment, and to be improved in usability and storage.

  Conventionally, this type of refrigerator employs a structure in which a plurality of rooms are formed by inserting a partition plate having heat insulation into the inner space of the largest outer heat insulation box. The plurality of rooms are insulated from each other so that different temperatures can be realized according to the respective purposes. Specifically, the heat insulation box has a double structure of a metal outer box and a resin inner box, and a heat insulating material such as polyurethane as a heat insulating material is foam-filled between the outer box and the inner box. Is formed. Moreover, in order to set it as the storage room of the temperature suitable for each foodstuff which partitions and preserve | saves the inside of the store | warehouse | chamber of a heat insulation box by a several temperature zone, the heat insulating partition is provided in the store | warehouse | chamber (for example, refer patent document 1). .

  In addition, it is possible to improve the usability of the innermost part of the uppermost storage chamber and lower the lowermost part by providing a recess for storing the high-pressure equipment of the cooling unit by recessing the rear upper wall of the storage box at the top of the heat insulation box. Some of them aim to increase the storage capacity of the storage room (see, for example, Patent Document 2).

  FIG. 12 is a longitudinal sectional view of a conventional refrigerator described in Patent Document 1. As shown in FIG.

  As shown in the figure, the heat insulating box 1 is provided in parallel with the refrigerating chamber 2, the switching chamber 3 that can be switched from the freezing temperature zone to the refrigerating temperature, vegetables, chilled, and the like, and the switching chamber 3 in order from the top. The ice storage room 4, the vegetable room 5, and the freezing room 6 are partitioned. Further, a cooling chamber 9 that houses a cooler 7 that generates cold air and a fan 8 that supplies the cold air to each storage chamber is provided in the lower back portion of the heat insulating box 1.

  The compartment of each storage room is made as follows. That is, the refrigerator compartment 2, the switching chamber 3, and the ice storage compartment 4 are partitioned in the vertical direction by the first partition 10. The lower rear side of the first partition 10 is partitioned by a second partition 11 that partitions each storage chamber and the cooling chamber 9 in the depth direction. This 2nd partition part 11 is provided with the ventilation path for cooling air and a return air path for cooling each store room. The third partition 12 partitions the switching chamber 3, the ice storage chamber 4, and the vegetable chamber 5 in the vertical direction. Since the third partition 12 is further provided with a partition that divides the switching chamber 3 and the ice storage chamber 4 in the left-right direction, the third partition 12 has an inverted T-shape when viewed from the front. . The vegetable compartment 5 and the freezer compartment 6 are separated by a fourth partition 13. Further, on the back surface of the refrigerating room 2, a fifth partition portion 14 configured by a cooling air blowing path and a return air path for cooling the refrigerating room 2 is provided.

  Next, the attachment structure of each partition will be described.

  The first partition 10 is integrally formed with the inner box 15 and is attached so that there is no cold air or water leakage by adhering the molded heat insulating material 16 to the inner box 15 by heat during molding.

  The second partition portion 11 is provided with a sealing material on the outer periphery so as to be separated from the cooling chamber 9, and further, a cooling air blowing path for cooling the refrigerator compartment 2 disposed at the rear portion of the first partition portion 10. A sealing material for joining the return air passage is provided on the joint surface with the first partition 10.

  The third partition portion 12 and the fourth partition portion 13 are each provided with a sealing material on the outer periphery so that there is no cold air or water leakage. Further, the fifth partition 14 is provided with a sealing material for joining a cool air blowing passage for cooling the refrigerator compartment 2 disposed at the rear of the first partition 10. The second partition part 11, the third partition part 12, the fourth partition part 13, and the fifth partition part 14 are attached after the heat insulating box 1 is filled and foamed with a heat insulating material such as polyurethane.

  Thereby, the inside of a refrigerator is divided into a plurality of storage rooms suitable for the temperature of each food product, and the ease of use and storage are improved, while the number of parts can be reduced and the assembly workability can be improved.

Japanese Patent Laid-Open No. 11-325691 JP 2001-99552 A

  However, in the above conventional configuration, the fourth partition 13 that partitions the vegetable compartment 5 and the freezer compartment 6 is attached after the heat insulating box 1 is filled and foamed with a heat insulating material such as polyurethane. In order to prevent this, a sealing material is provided on the outer periphery of the fourth partition 13. For this reason, a considerable amount of sealing material is required, and furthermore, since the storage chambers having a large temperature difference are partitioned, if the manufacturing variation is taken into consideration, the width and length of the sealing material become large, resulting in an increase in cost.

  Moreover, since the 4th partition part 13 is comprised with shaping | molding heat insulating materials, such as a polystyrene whose heat conductivity is higher than a polyurethane, it may be condensed on the surface in the vegetable compartment 5 by the influence of the freezer compartment 6. Moreover, since the temperature in the vegetable compartment 5 becomes below a preset temperature due to the influence of the freezer compartment 6, a heater for temperature compensation is unavoidably disposed in the vegetable compartment 5, and the vegetable compartment 5 is heated by the heater. It is necessary to maintain the temperature at a preset temperature, which not only increases the cost for installing the heater but also increases the amount of power consumed for heating with the heater.

  Since the 3rd partition part 12, the 5th partition part 14, and the vertical partition 120 are partition parts which partition between the storage rooms with a large temperature difference, the same thing as the 4th partition part 13 can be said.

  In addition, when the cool air blowing path is configured via the partition portion like the cool air blowing path for cooling the refrigerator compartment 2 disposed in the rear portion of the first partition section 10, the first partition Since the lower surface of the rear part of the part 10 is joined to the second partition part 11 and the upper surface of the rear part of the first partition part 10 is joined to the fifth partition part 14, the rear part of the first partition part 10 Both the upper surface and the lower surface require a sealing material that prevents leakage of cold air for the refrigerator compartment 2, which increases costs.

  Although not shown in the aspect of improving storage, it is important how to increase the internal volume and increase the volumetric efficiency in a limited space for installing the refrigerator. Vacuum insulation with high heat insulation performance, which is about 1/10 of that of polyurethane, is placed on the side and bottom of the heat insulation box 1 to reduce the wall thickness while maintaining the heat insulation performance. There are also things to let you.

  In addition, although not shown, by providing a high-pressure equipment storage recess for the cooling unit by recessing the rear wall of the uppermost storage chamber at the top of the heat-insulating box 1 which is inconvenient because it is difficult to reach, etc. There is also a product that improves the usability by increasing the storage capacity of the lowest storage room.

Such a refrigerator has a heat insulating box body in a state in which food is stored because the wall of the heat insulating box body 1 is thin and the high-pressure device of the relatively heavy cooling unit is at the top of the heat insulating box body. The box strength is required so that 1 is not distorted. For this purpose, it is necessary to secure the box strength with a reinforcing plate or the like. However, with a reinforcing plate made of iron or the like, not only an increase in cost but also an increase in power consumption is caused by the influence of iron with good thermal conductivity.

  As described above, in order to insert and attach the partition part that partitions the storage chambers having a large temperature difference after forming the heat insulating box body, a large amount of the joint surface between the heat insulating box body and the partition part is formed with a sealing material. Since it is necessary to seal, the necessary sealing material is increased, and in order to clear quality aspects such as cold air leakage, a high-quality sealing material is required, and there is a problem in terms of cost.

  Moreover, the partition part which should become a beam of a heat insulation box body and contribute to structural strength improvement is only adhere | attached with the sealing material, and sufficient intensity | strength cannot be ensured.

  A temperature compensation heater is required to compensate for a predetermined temperature in each storage chamber and prevent condensation and freezing in the storage chamber, which not only increases costs but also increases power consumption.

  Therefore, as a solution to the above conventional problem, after placing the hollow partition portion in the heat insulation box body before filling the heat insulating material, by filling the heat insulating material to the hollow portion of the partition portion together with the heat insulation box body, A separate application has been filed for an invention relating to a refrigerator that can improve the heat insulation performance in the partition without using a large amount of sealing material and can also improve the strength.

  However, when the heat insulating material is filled up to the hollow portion of the partitioning portion together with the heat insulating box as described above, there is a problem that the filler leaks from the gap between the partition and the heat insulating box during filling.

  This invention solves the said conventional subject, and provides the refrigerator which prevented the leakage of the heat insulating material which generate | occur | produces when filling a heat insulating material to the hollow part of a partition part with a heat insulation box, and improved the beauty | look. For the purpose.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a heat insulating box that forms an outer wall, a partition that is attached to the heat insulating box and partitions the inner space of the heat insulating box, and a rear end of the partition. Between the heat insulation box and the cooling air duct having a width smaller than the inner width of the heat insulation box, the inside of the heat insulation box, and the interior of the partition are integrally filled. The partition includes a flange extending from a peripheral edge along an inner wall surface of the heat insulating box, and the flange includes a duct pressing portion that covers a front surface and a side surface of the duct. It is characterized by providing.

  Thereby, since the heat insulating material which leaks from between a heat insulation box and a partition is also filled also into the clearance gap between a flange and a heat insulation box, it becomes possible to improve a heat insulation effect. In addition, the flange can increase the distance from the leakage source of the heat insulating material so that the limit of the heat insulating material leakage can be kept in the flange, and the heat insulating material leaked by the flange can be concealed, and It becomes difficult to escape from the joined portion, and a high heat insulating effect is easily achieved.

  The refrigerator of the present invention can reduce the joint surface between the partition portion and the air passage while improving usability and storage, and can reduce costs, stabilize quality, and reduce power consumption. Moreover, the aesthetics inside a refrigerator can be improved.

The longitudinal cross-sectional view of the refrigerator in Embodiment 1 of this invention The perspective view which shows the united 3rd partition and 2nd air path in the embodiment The longitudinal cross-sectional view which shows the structure of the partition in the same embodiment The perspective view shown in the state which decomposed | disassembled the 3rd partition vicinity in the same embodiment The top view which shows the state which attached the 2nd air path in the same embodiment to the 3rd partition Sectional drawing which expands and shows the discharge hole vicinity in the same embodiment The perspective view which decomposes | disassembles and shows the 4th partition in the embodiment Sectional drawing which shows the variation of the butt | matching state of the flange in the embodiment Sectional drawing which shows the other variation of the butt | matching state of the flange in the embodiment Sectional drawing which shows one of the effect of the flange in the embodiment The perspective view which shows the 3rd partition and 2nd air path of the refrigerator in Embodiment 2 of this invention. A longitudinal sectional view showing a conventional refrigerator

  The invention according to claim 1 includes: a heat insulating box that forms an outer wall; a partition that is attached to the heat insulating box and partitions the inner space of the heat insulating box; and a rear end of the partition and the heat insulating box. A refrigerator comprising a cool air blowing duct disposed between and having a narrower width than the inner width of the heat insulation box, and a heat insulation material that is integrally filled in the heat insulation box and the partition. And the said partition is provided with the flange extended from the peripheral part along the inner wall face of the said heat insulation box, The said flange is provided with the duct pressing part which covers the front surface and side surface of the said duct. It is. Thereby, a sealing material required for the joining surface of a partition and a heat insulation box can be reduced, and cost can be reduced. In addition, the gap between the joints is filled with heat insulating material, and the leaked heat insulating material is also present between the flange and the heat insulating box, so that cold air leaks to the storage room and the quality of the refrigerator can be stabilized. it can. Moreover, the duct pressing part of the flange supports the duct pressed from the back part by the foaming pressure generated at the time of filling the heat insulating material from the front surface or the side surface, and it is possible to avoid the damage and deformation of the duct.

  According to a second aspect of the present invention, in the first aspect of the invention, a flange for covering the duct is provided with a hole for discharging cool air into the cabinet corresponding to the duct, and can be forcibly inserted into the duct in the vicinity of the periphery thereof. A rib with a sharp tip is provided. This improves the degree of adhesion between the flange and the front wall of the duct, prevents the cool air discharged from the duct from leaking to the back side of the flange, and ensures a stable air volume.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the flange provided in the partition is integrated over the back surface and both side surfaces of the flange. Thereby, while the intensity | strength of the whole flange extended from a partition can be improved, the said flange becomes a rib and it contributes to the intensity | strength improvement of the whole partition. Therefore, when the flange has a duct pressing portion, the duct can be pressed more firmly, and damage and deformation of the duct can be effectively suppressed. Moreover, it becomes possible to suppress effectively the deformation | transformation of the partition itself by the foaming pressure of a heat insulating material. Further, when the rear flange is deformed forward by the foaming pressure, the flanges on both sides try to resist the deformation, so that the rigidity of the rear flange can be improved. When the rigidity of the flange on the back surface is increased, the flatness of the back surface flange is improved, for example, the close contact between the flange and the front wall of the duct is improved at the cold air discharge port, and the flange and the duct are It is possible to prevent cold air from leaking into the space and to secure a stable air volume.

The invention according to claim 4 is the invention according to claim 3, wherein both side portions of the flange on the back surface are configured in a trumpet shape extending toward the front in the depth direction. Accordingly, both side surfaces of the rear flange can be pressed by the foaming jig, and the second air passage can be prevented from being deformed by the foaming pressure and bulging to the storage chamber side. Also, if the rigidity of the rear flange can be increased and the rigidity is increased, the flatness of the rear flange is improved, and the cool air discharge port to the fourth storage chamber is located in front of the rear flange and the second air passage. The degree of adhesion with the wall is improved, the leakage of cold air between the two parts can be prevented, and a stable air volume can be secured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the same reference numerals are given to the same configurations as those of the conventional example or the above-described embodiments, and detailed description thereof will be omitted. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a longitudinal sectional view of the refrigerator in Embodiment 1 of the present invention.

  As shown in the figure, the refrigerator 200 includes a heat insulating box 201 and a door 300 that covers the opening of the heat insulating box 201.

  The heat insulation box 201 is composed of an outer box 202 and an inner box 203, and is filled with a heat insulating material such as hard foamed urethane between the outer box 202 and the inner box 203 to insulate the surroundings and the inside of the cabinet. It is a box with a shape. Further, the interior of the heat insulating box 201 is divided into a plurality of storage rooms by a partition described later. The heat insulation box 201 has an opening on the widest surface, and the opening can be opened and closed with a door 300 attached via a hinge or the front surface of a drawer. .

  A refrigeration room 204 serving as a first storage room is disposed at the top of the inside of the heat insulating box 201, and a switching room 205 and an ice making room 206 serving as a fourth storage room are arranged side by side below the refrigeration room 204. Is provided. In addition, a vegetable room 207 as a second storage room is disposed below the switching room 205 and the ice making room 206, and a freezing room 208 as a third storage room is disposed at the lowermost part inside the heat insulating box 201. The The refrigerator 200 according to the present embodiment has the above configuration.

  The refrigerated room 204 is a storage room for refrigerated storage of articles without freezing them. Therefore, the temperature of the refrigerator compartment 204 is maintained in the range of 1 ° C. to 5 ° C., which is the lower limit of the temperature range in which the article does not freeze.

  The vegetable room 207 is often maintained in the range of 2 ° C. to 7 ° C., which is equal to or slightly higher than the temperature of the refrigerator room 204. In addition, it is possible to maintain the freshness of leafy vegetables for a long time, so that it becomes low temperature.

  The freezer compartment 208 is maintained in a freezing temperature zone, and specifically, is maintained at −22 ° C. to −18 ° C. Moreover, in order to improve a frozen preservation state, it may be maintained at a low temperature of, for example, -30 ° C or -25 ° C.

  The switching chamber 205 is a storage chamber that can be switched to a preset temperature zone between the refrigeration temperature zone and the freezing temperature zone. For example, if it is set at 1 ° C to 5 ° C, it functions as a refrigerator room, if it is set at 2 ° C to 7 ° C, it functions in the same way as a vegetable room, and if it is set at about 0 ° C, it functions as a chilled room. If it is set at about -3 ° C, it functions as a partial room for long-term storage of meat or fish in a slightly frozen state. If it is set at a temperature range of 0 ° C or less, it is like a freezer room for freezing storage. To work.

  The ice making room 206 is a space for making and storing ice with an automatic ice making machine (not shown) provided in the ice making room 206 with water sent from a water storage tank (not shown) in the refrigerator compartment 204. is there.

  In the refrigerator compartment 204, the bottom of the refrigerator compartment 204 and the bottom of the door of the refrigerator compartment 204 are lowered so that relatively heavy pots, plastic bottle drinks, milk cartons and the like can be easily taken out by women and children. .

  The top surface portion of the heat insulating box 201 has a stepped recess shape toward the back side of the refrigerator compartment 204. The stepped recess has a compressor 209, a dryer (not shown) for removing moisture, and the like. The components on the high-pressure side of the refrigeration cycle are housed. That is, the concave portion in which the compressor 209 is disposed is formed by biting into the uppermost rear region in the refrigerator compartment 204.

  By adopting the above configuration, the compressor 209 can be disposed in the rear region of the uppermost storage chamber of the heat insulation box 201 that has become a dead space that is difficult to reach, and is easy to use for everyone. The storage chamber capacity at the bottom of the body 201 can be increased.

  In addition, as a refrigerator concerning this invention, you may arrange | position the compressor 209 in the back area | region of the lowermost store room of the heat insulation box 201 which was common conventionally.

  The cooling room 210 is provided on the back of the vegetable room 207 and the freezing room 208. The cooling chamber 210 is partitioned from the vegetable compartment 207 and the freezer compartment 208 by a first partition 211 having heat insulation performance.

  In the cooling chamber 210, a fin-and-tube type cooler (not shown) is disposed as a typical example, and cold air cooled by the cooler by a forced convection system is placed in the upper space of the cooler. A cooling fan (not shown) for blowing air to the refrigerating room 204, the switching room 205, the ice making room 206, the vegetable room 207, and the freezing room 208 is disposed, and adheres to the cooler and the cooling fan during cooling in the lower space of the cooler. A radiant heater (not shown) made of a glass tube is provided as an apparatus for defrosting frost.

  The cool air blown from the cooling chamber 210 is supplied to each storage chamber via air paths 215, 216, and 215a described later. Moreover, the temperature of each store room is adjusted with the supply amount of the cold air by the below-mentioned damper.

  The first partition 211 is a partition that partitions the cooling chamber 210 from the freezing chamber 208 and the vegetable chamber 207. Further, the first partition 211 has a first air passage 215 therein. This first air passage 215 is an air passage for blowing cold air to the freezer compartment 208, the refrigerator compartment 204, the switching compartment 205, the ice making compartment 206, and the vegetable compartment 207.

  The first partition 211 is a unit that is attached to the inner back wall of the inner box 203. The first partition 211 is connected to the inner box 203 and the like so as not to leak cold air or water from the cooling chamber 210 to the freezer compartment 208 or the vegetable compartment 207. The joining portion of the partition 211 is affixed with a sealing material while ensuring airtightness and heat insulation.

  Moreover, since the upper surface of the 1st partition 211 is joined with the 2nd air path 216 by which the cold air for cooling the refrigerator compartment 204, the switching room 205, the ice making room 206, and the vegetable compartment 207 is ventilated, the said junction The surface is also pasted with a sealing material.

The second partition 217 is a partition between the freezer compartment 208 and the vegetable compartment 207, and is composed of a heat insulating material such as polystyrene. The second partition 217 is inserted and disposed in the inner box 203 after being filled with the heat insulating material, and the joint surface with the inner box 203 and the first partition 211 is joined by a sealing material.

  Note that the first partition 211 and the second partition 217 are detachable because they are separated by applying a force in a direction in which the sealing material joining them separates.

  FIG. 2 is a perspective view showing a third partition which is a partition according to the present invention and a second air passage as a duct attached to the back of the third partition, and FIG. 3 is a partition in the present embodiment. FIG. 4 is a perspective view showing the vicinity of the third partition in the present embodiment in an exploded state, and FIG. 5 shows the second air passage in the present embodiment as the third partition. FIG. 6 is an enlarged sectional view showing the vicinity of the discharge hole in the present embodiment, and FIG. 7 is an exploded perspective view showing the fourth partition in the present embodiment. FIG. 8 is a cross-sectional view showing a variation of the flange butting state in the present embodiment, FIG. 9 is a cross-sectional view showing another variation of the flange butting state in the present embodiment, and FIG. 10 is the present embodiment. Of flanges It is a cross-sectional view showing one effect.

  As shown in FIGS. 2 and 1, the third partition 218 is a partition that vertically partitions the switching chamber 205, the ice making chamber 206, and the vegetable chamber 207. As shown in FIG. 4, the third partition 218 includes an upper surface plate 219 and a lower surface plate 220. Between the upper surface plate 219 and the lower surface plate 220, that is, inside the third partition 218, a heat insulating material such as hard foamed urethane is integrally formed between the outer box 202 and the inner box 203 of the heat insulating box 201. It is a space to be filled.

  Here, for convenience, the flat plate portion of the third partition 218 is referred to as a partition plate 301. As shown in FIG. 5, the partition plate 301 has a substantially rectangular shape in plan view, but the back end portion includes a recessed portion that matches the external shape of the second air passage 216. As shown in FIG. 2, an upright flange 226 along the shape is integrally erected on the back end edge including both side edges and the recessed portion except for the front end of the partition plate 301.

  When the third partition 218 is attached to the heat insulation box 201, the flange 226 has a shape that is in contact with the inner method of the heat insulation box 201 or the outer periphery of the second air passage 216. Further, the height of the flange 226 has a height that can be engaged with the end portion of the flange that the fourth partition 222 similarly includes.

  In particular, as shown in FIG. 2, the duct holding portion 304 of the flange 226 has a U-shape that opens toward the back as seen from the plane cross section, and holds the second air passage 216. ing. Further, by forming the duct pressing portion 304 of the flange 226 into the shape, a space 228 is created between the flange 226 and the side surface of the inner box 203 as shown in FIG.

  On the other hand, the fourth partition 222 as an adjacent partition is a partition that vertically separates the refrigerator compartment 204, the switching chamber 205, and the ice making chamber 206. As shown in FIG. A flange 225 depending on the peripheral edge other than the edge is extended. Further, as shown in FIG. 7, the fourth partition 222 is also provided with a lower surface plate 223 and an upper surface plate 224 in the same manner as the third partition 218. The space between the lower surface plate 223 and the upper surface plate 224, that is, the inside of the fourth partition 222, is filled with a heat insulating material such as hard foamed urethane at the same time as the heat insulating box 201 like the third partition 218. Is formed.

  In addition, the flange 225 includes a duct holding portion 304 similar to the third partition 218, and the duct holding portion 304 has a U-shape that holds the second air passage 216 when viewed from the plane cross section as described above. A space 228 is created between the inner box 203 and the side surface.

  As shown in FIG. 3, the flange 226 of the third partition 218 and the flange of the fourth partition 222 are in contact with each other with the third partition 218 and the fourth partition 222 attached to the heat insulating box. It is set to a height that will be in a state.

  As a result, the space sandwiched between the third partition 218 and the fourth partition 222, that is, the switching chamber 205 and the ice making chamber 206 are only the two partitions 218, 222 and flanges 225, 226 provided integrally therewith except for the front surface. It will be surrounded by. That is, there is a joint portion where the flanges 225 and 226 are in a butted state except for the front surface.

  For this reason, it is difficult for the cold air introduced into the switching chamber 205 and the ice making chamber 206 to escape from the joining portion, and a high heat insulating effect is easily achieved. That is, when the inside of the box of the heat insulation box 201 is divided by two simple plate-like partition plates having no flange, since there are joint portions on each partition plate, there are two joint portions, and the cold air The number of places that can be circulated increases twice, making it difficult to achieve a high heat insulation effect.

  As shown in FIG. 3, a hook is provided at the tip of one flange 226, and a hole that engages the hook is provided at the tip of the other flange 225. Then, the flange 225 and the flange 226 can be fixed in a butted state with the hook and the hole engaged.

  Thereby, even when a warp of about 1 to 2 mm occurs when the flanges 225 and 226 are molded, the gap of the flange can be suppressed by the engagement structure.

  In addition, as shown in FIG. 8, you may provide an inclined surface shape up and down, right and left in the position facing the said nail | claw of a flange.

  This makes it possible to fit the claws while compensating for the positional shift of both parts when the flange 225 of the third partition 218 and the flange 226 of the fourth partition 222 are joined in the manufacturing process.

  Furthermore, as shown in FIG. 9, an engagement structure such as a claw may not be employed, and an overlap portion 305 that reaches the other flange may be provided on the back surface of one flange.

  As a result, even when an error occurs in the dimensions of the flanges 225 and 226 or distortion occurs, it is possible to prevent a large gap from being generated.

  Further, as shown in FIG. 2, the partition plate 301 is provided with a heat insulating material discharge port 302 through which a heat insulating material filled in the partition plate 301 is discharged on a side surface joined to the inner box 203. The discharge port 302 is an outlet through which a heat insulating material led out from a predetermined position of the inner box 203 and filled in the partition plate 301 leaks. And the heat-insulating material leaked from the discharge port 302 is filled in the gap between the partition plate 301 or the flange 226 and the inner box 203 or the second air passage 216, blocking the passage of cold air through the gap, The storage chambers partitioned by the partition plate 301 are insulated.

As shown in FIGS. 2 and 3, a second air passage 216 as a duct related to the present invention is disposed in the middle of the back of the back of the third partition 218 and the fourth partition 222. . The second air passage 216 is an air passage formed of a heat insulating material such as polystyrene, and as shown in the figure, includes a portion narrower than the width (inner method) of the inner box 203, and a third air passage The width of the partition 218 or the fourth partition 222 is narrower. Therefore, in a state where the third partition 218, the fourth partition 222, and the second air passage 216 are attached to the inside of the inner box 203, there is provided a surface that can press the inner box 203 without going through the second air passage 216. A space 228 can be created.

  Further, as shown in FIG. 2, the second air passage 216 has a length (height) extending from the third partition 218 to the adjacent fourth partition 222.

  The front side wall of the second air passage 216 is provided with a discharge hole 306 that discharges cold air to a storage chamber partitioned by a third partition 218 and a fourth partition 222.

  FIG. 6 is an enlarged sectional view showing the vicinity of the discharge hole.

  As shown in the figure, the flange 225 provided in the fourth partition 222 is provided with an opening 307 at a position corresponding to the discharge hole 306 provided in the second air passage 216. An insertion rib 308 having a sharp tip is provided at the periphery of the opening 307 toward the second air passage 216, and the insertion rib 308 is provided on the side wall of the discharge hole 306 at the periphery of the second air passage 216. By forced insertion (about 1 mm), the second air passage 216 and the flange 225 are sealed.

  Further, as shown in FIG. 2, two ribs 303 to be joined to the partition plate 301 are provided on the front side of the duct pressing portion 304 of the flange 226.

  By this rib 303, the rigidity of the duct pressing portion of the flange 226, particularly the rigidity in the direction of falling toward the partition plate 301 can be improved. When the rigidity of the portion is increased, the shape stability such as the flatness of the duct pressing portion is improved, the degree of adhesion between the duct pressing portion of the flange 226 and the front wall of the second air passage 216 is improved, and the flange 226 is improved. It is possible to prevent the leakage of cold air into the gap between the first air passage 216 and the second air passage 216 and to secure a stable air volume.

  Next, a part of manufacturing process of the refrigerator according to the present invention will be described.

  First, as shown in FIG. 2, the second air passage 216 is attached to the inner part of the third partition 218 in advance. As shown in FIG. 3, the attachment is performed by forcibly inserting a wedge-shaped attachment rib 251 protruding in the back direction from the back end of the third partition 218 into the second air passage 216.

  In this way, by attaching the second air passage 216 to the third partition 218 and making it a unit, it can be assembled while observing the mating part of the third partition 218 and the second air passage 216, Since it can be confirmed whether or not the alignment is surely performed, it is possible to prevent the leakage of cold air such as a seal failure. Furthermore, since the positioning of the third partition 218 and the second air passage 216 can be ensured by integration, the fitting with the first air passage 215 and the like can be smoothly and reliably performed when attaching to the inner box 203. And seal breakage can be prevented. Further, when the second air passage 216 is first attached to the inner box 203, parts for positioning the second air passage 216, parts to be fixed, and the like are required, which increases the cost. If it becomes, the said part will become unnecessary and it will lead to reduction of the man-hour at the time of a part and an assembly.

  Next, as shown in FIG. 4, the inner box 203 is arranged inside the outer box 202, and the unitary third partition 218 and the second air passage 216 are temporarily attached to the inner box 203. . Next, the fourth partition 222 is temporarily attached in the inner box 203. At this time, the flange 225 of the fourth partition 222 and the flange 226 of the third partition 218 are engaged in the vertical direction as shown in FIG.

As described above, the second air passage 216 is disposed at a predetermined position in the chamber of the heat insulating box 201.
The second air passage 216 and other air passages 215, 215a, etc. connected in the vertical direction are bonded to each other with a sealing material.

  In addition, the side surface of the third partition 218 is provided with an introduction port for introducing a heat insulating material, and the corresponding portion of the inner box 203 with the third partition 218 attached is provided with a heat insulating material. It has been. And in the state where the 3rd partition 218 was attached, the sealing material is affixed around the said inlet and outlet, and the heat insulating material which flows out from an outlet to an inlet is not leaked. Further, a discharge port 302 through which the heat insulating material introduced into the third partition 218 from the introduction port is discharged to the outside of the third partition 218 is provided on the side surface of the third partition 218. The discharge port 302 is provided facing the inner box 203. In addition, as shown in FIG. 10, a bank 309 for blocking the leaked heat insulating material is provided in the vicinity of the discharge port 302. The structure is similarly adopted for the fourth partition 222.

  In addition, necessary parts and the like before and after the temporary attachment of the third partition 218 are attached to the inner box 203 or the like.

  Next, a jig for supporting the inner box 203 and the like when the heat insulating material is injected is set. The jig has a structure that also supports the surfaces present on both sides of the third partition 218.

  Next, a heat insulating material is injected. Hard urethane foam is adopted as the heat insulating material to be injected. The heat insulating material is filled between the inner box 203 and the outer box 202, and the inside of the partition is led from the outlet port provided in the inner box 203 through the inlet port provided in the third partition 218 or the fourth partition 222. Filled. Further, the heat insulating material leaks from the discharge port 302 and is filled between the partition 218 or the partition 222 surrounded by the bank 309 and the inner box 203.

  However, since the third partition 218 is a resin molded product, and the inner box 203 that is in contact with the third partition 218 is also a molded product, the heat insulating material may not be sealed depending on the bank 309 due to dimensional error and distortion. In this case, as shown in FIG. 10, since the flange 226 extending along the inner box 203 covers the leakage of the heat insulating material, the heat insulating material is not seen only when the inside of the refrigerator 200 is normally viewed. Further, the flange 226 exists in a direction away from the outflow source of the heat insulating material, and since the gap with the inner box 203 or the like is narrow, it also has an effect of suppressing the leakage of the heat insulating material.

  Next, a heat insulating material is filled in the heat insulation box 201, the third partition 218, and the fourth partition 222.

  When the heat insulating material is foamed (for example, during urethane foaming), foaming pressure is applied to the second air passage 216 from the outer box 202, the inner box 203, the third partition 218, and the fourth partition 222. The portion of the second air passage 216 that is not in contact with the third partition 218 or the fourth partition 222 is subjected to foaming pressure only from the inner box 203 on the back surface, so the second air passage 216 is the third partition. There is a possibility that the portion that contacts 218 and the fourth partition 222 may bulge out with an arc as a fulcrum. However, the flange 225 and the flange 226 rising and hanging from the third partition 218 and the fourth partition 222 support the front surface and the side surface of the second air passage 216, and the flanges overlap each other and are in contact with the claws. Therefore, the flanges 225 and 226 can sufficiently receive the foaming pressure that the second air passage 216 receives from the back surface, and the second air passage 216 can be protected from deformation due to the foaming pressure.

In addition, a urethane jig made of resin or the like that receives pressure during urethane foaming is disposed in each chamber. Of course, a urethane jig is also arranged in the space 228. Thereby, the side surface and front surface of the second air passage 216 are pressed by the urethane jig, and deformation due to foaming pressure can be prevented. In particular, since the support surface is supported by the jig, the jig can support a part of the foaming pressure from the inner box 203, and the burden on the second air passage 216 due to the foaming pressure is reduced. .

  In addition, since the third partition 218 and the fourth partition 222 are filled with hard foamed urethane as a partition structure between the storage chambers and cannot be removed, the storage chamber 201 is firmly joined to the storage chamber. There is no cold air leak between the two, leading to stable quality. Furthermore, since the inside of the heat insulation box 201 has a partition structure filled with two pieces of urethane by the third partition 218 and the fourth partition 222, the box strength of the refrigerator body can be increased, and the refrigerator door The distortion of the refrigerator main body due to the load of the food stored in can be suppressed.

  Further, since the switching chamber 205 and the ice making chamber 206 sandwiched between the third partition 218 and the fourth partition 222 that are foamed with hard foamed urethane cannot be removed, the heat insulation box 201 is made of urethane. When the second air passage 216 is attached to the back of the switching chamber 205 and the ice making chamber 206 after foaming, the workability is very poor, and the work efficiency is improved by attaching the second air passage 216 before foaming the urethane. can do.

(Embodiment 2)
Next, a second embodiment will be described. In the present embodiment, another structure is added to the first embodiment.

  FIG. 11 is a perspective view showing a third partition and a second air passage in Embodiment 2 of the present invention.

  As shown in the figure, the third partition 218 is provided with a protruding wall 321 that extends in the depth direction and protrudes in the intermediate portion in the width direction. The protruding wall 321 constitutes a part of a wall that further divides the space between the third partition 218 and the fourth partition 222 in the left and right directions.

  Further, the third partition 218 includes return ports 322 that open perpendicularly to the partition plate 301 at positions on both sides of the second air passage 216. Further, the return port 322 is provided not only directly on the partition plate 301 but also on an inclined surface extending obliquely from the side surface of the duct pressing portion of the flange 226 toward the partition plate. The return port 322 functions as an open end of an air passage for returning the cool air discharged into the warehouse to the cooling chamber 210.

  With the above configuration, the following operational effects can be achieved. That is, when the return port 322 is provided directly in the flange 226, a mold for manufacturing the third partition 218 needs to adopt a slide core type mold. However, if this slide core method is adopted, there is a problem that the molding process becomes complicated and the mold cost for molding becomes expensive. However, if a return port is provided in a direction perpendicular to the partition plate 301, it can be easily molded using a simple upper and lower punching mold, and the manufacturing cost and the cost of the molding mold can be suppressed. In addition to providing a return port 322 directly on the partition plate 301, an inclined surface 323 extending from the flange 226 to the partition plate 301 is provided, and a return port 322 is formed there, thereby reducing the rigidity of the partition plate 301 based on the return port 322. In addition, the rigidity of the flange 226 in the vicinity of the return port can be increased, the leakage of cold air to the gap between the flange 226 and the second air passage 216 can be prevented, and a stable air volume can be secured.

  Further, a partition rib 324 extending in the depth direction so as to separate the discharge hole 306 and the return port 322 is integrally provided at an intermediate portion between the protruding wall 321 and the flange 226. When the ice storage box (not shown) is disposed in the ice making chamber 206, the partition rib has a shape that conforms to the outer shape of the bottom and back wall of the ice storage box.

  Thereby, the cooling rib can be formed by the partition rib and the ice storage box, and the cold air discharged from the discharge hole 306 is not immediately sucked from the return port 322, but the cold air is arranged in the ice making chamber 206. The lower part of the ice storage box is largely detoured to pass through, and the proper temperature inside the storage can be secured efficiently. In addition, even when the ice making chamber 206 is opened, since the cold air does not blow directly out of the refrigerator 200, it is possible to suppress the temperature rise accompanying the opening and closing of the ice making chamber 206.

  As mentioned above, although embodiment concerning this invention has been described, this invention is not limited only to the said embodiment.

  For example, polystyrene is listed as the material constituting the second partition 217, but other materials may be used.

  The present invention can be applied to a refrigerator, particularly a refrigerator formed by filling a heat insulating material integrally with a heat insulating box and a partition partitioning the interior of the refrigerator.

201 Heat insulation box 203 Inner box 204 Refrigerated room (first storage room)
205 switching room (fourth storage room)
207 Vegetable room (second storage room)
208 Freezer room (third storage room)
210 Cooling chamber 211 First partition 215 First air path 216 Second air path 217 Second partition 218 Third partition 222 Fourth partition 225 Flange 226 Flange 228 Space 251 Mounting rib 301 Partition plate 302 Discharge port 303 Rib 304 Duct holding part 305 Overlap part 306 Discharge hole 307 Opening part 308 Insertion rib 309 Embankment 321 Projection wall 322 Return port 323 Inclined surface 324 Partition rib

Claims (4)

A heat insulating box constituting the outer wall, a partition attached to the heat insulating box and partitioning the interior of the heat insulating box, and disposed between the rear end of the partition and the heat insulating box. A refrigerator comprising a cold air blowing duct narrower than the width of an internal method, the inside of the heat insulating box, and a heat insulating material that is integrally filled in the partition, wherein the partition is A refrigerator comprising a flange extending from a peripheral edge along an inner wall surface of the heat insulation box, wherein the flange includes a duct pressing portion that covers a front surface and a side surface of the duct. The duct includes a discharge hole for discharging cool air between the adjacent partitions, and the flange is disposed at a position corresponding to the discharge hole, and a peripheral edge of the opening. The refrigerator according to claim 1, further comprising a fitting rib having a sharp tip that can be forcibly inserted into the refrigerator. The refrigerator according to claim 1 or 2, wherein the flange is integrally formed around the duct, the back surface and both side surfaces of the inner wall of the heat insulating box. The refrigerator according to claim 3, wherein the flange includes a chamfered portion that gradually reaches a side surface from a back surface at a corner portion.