TWI335408B - - Google Patents

Description

1335408 IX. INSTRUCTIONS: I: FIELD OF THE INVENTION Field of the Invention The present invention relates to a refrigerator in which a compressor is stowed on a top surface.

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20 Ϊ: Background of the prior art 3 invention In recent years, in order to protect the global environment, the power-saving technology of refrigerators has made great progress, and the pursuit of convenience and storage has been pursued. In order to expand the storage volume of the storage compartment disposed at the lowermost portion, the refrigerator is provided with a recessed portion on the back portion of the storage compartment of the heat insulating box, and a refrigeration cycle is accommodated in the recessed portion. The way. For example, Japanese Patent Application Laid-Open No. 2001-99552 has been disclosed. Fig. 15 is a view showing the constitution of a conventional refrigerator described in the above patent document. As shown in Fig. 15, in the heat insulating box 1, the refrigerating chamber 2, the freezing chamber 3, and the vegetable and fruit chamber 4 are provided in this order from the top, and the refrigerating chamber revolving door 5 is provided in front of the refrigerating chamber 2. In addition, the freezer compartment 3 and the vegetable compartment 4 disposed at the lower portion of the center of the heat insulating box 1 are provided with a drawer type drawer compartment 6 and a fruit and vegetable compartment drawer which can be easily pulled out in consideration of storability and ease of use. Door 7. A plurality of storage racks 8 are provided in the interior of the refrigerating compartment 2, and a storage container 9 having an upper opening is attached to both the freezing compartment 3 and the vegetable compartment 4. The storage container 9 is supported by a roller on a slide rail (not shown) in the front-rear direction and is movable in the front-rear direction. The recessed portion 10 provided in the heat insulating box 1 is formed so as to sag across the top of the outer box top surface 11 and the top surface of the outer box back surface 12, and the back portion of the refrigerator compartment 2 is depressed. Concave 5 1335408

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The left and right walls of the heat insulating box 1 are blocked, and the upper and the back surfaces are open. The open portion of the recess 10 is a recess formed by the upper plate 13 and the back plate 14 substantially at right angles thereto. Covered by cover plate 15. Further, the recessed cover 15 is detachably fixed to the heat insulating box 1 by bolts or the like. The compressor 16, the condenser 17, and the machine room fan 18, which constitute the refrigeration cycle, are housed in the recess 10 and covered by the recess cover 15. Further, a plurality of ventilation holes (not shown) for dissipating heat are provided on the upper plate 13 and the back plate 14 of the recess cover plate 15. Further, the evaporator 20 and the cooling fan 21 which are the components of the refrigeration cycle are also disposed on the back of the refrigerator compartment 2, and the fruit and vegetable compartment 4 of the lowermost storage section is formed to have a deeper depth. Thereby, the internal volume of the vegetable compartment 4 can be made larger and deeper than the case where the compressor 16 and the condenser 17 are housed in the lower portion of the back surface of the heat insulating box 1. However, in the above-mentioned conventional configuration, the recessed portion of the uppermost portion of the refrigerator is for accommodating the heavier compressor, the condenser, the refrigerant piping, and the control substrate among the components of the refrigerator, so that the center of gravity of the refrigerator is high and the dumping is easy to occur. . Generally, a refrigerator with a 4-point support on the floor may have a problem that the center of gravity is placed on the outside of the four perpendicular lines extending from the fulcrums in the direction of gravity. The higher the position of the center of gravity, the more the tilt of the refrigerator caused by the deviation of the setting of the refrigerator and the external force, the more likely the tilt will occur at a slight tilt angle. In particular, when a drawer type storage room is provided, once the door is opened, the drawer door, the storage box, the drawer slide rails and the storage contents of the storage compartment assembly will be flushed out of the outside of the heat insulating box. At this time, the center of gravity of the refrigerator moves toward the front and the weight of the refrigerator body is reduced, thereby constituting a condition that is easier to dump. The higher the center of gravity, the easier it is to dump even if it is only slightly tilted. 6 1335408 Further, in the state in which the drawer type storage room is pulled out, the storage object is usually placed and taken out from above, and the drawer door is also urged, so that it is more necessary to improve the dumping stability. Moreover, since the drawer type storage compartment is usually designed to be detachable, when the lower drawer type storage compartment has been removed, the weight of the lower portion of the heat insulating box body is reduced, and the dumping is liable to occur. How to stabilize the above-mentioned drawer storage compartment with severely changed weight is a particularly important issue for preventing dumping.

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SUMMARY OF THE INVENTION Summary of the Invention The refrigerator of the present invention has the following configuration. The heat insulation box with the compressor on the top surface is provided with at least two or more heat insulation zones in the up and down direction. The heat insulation box system consists of an inner box, an outer box, a foam insulation and a density. The vacuum insulation material is composed of a large vacuum insulation material, and the total weight or volume of the vacuum insulation material disposed above the lower end surface of the uppermost heat insulation section disposed in the uppermost portion is smaller than the maximum The total weight or volume of the vacuum insulation disposed below the lower end of the upper insulation section. By the above, in addition to ensuring the internal volume and depth of the storage compartment in the lowermost section, the stability of the setting of the refrigerator can be increased, and the prevention of dumping can be improved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic front view of a refrigerator according to a first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing a refrigerator according to a second embodiment of the present invention. Fig. 3 is a schematic cross-sectional view showing a refrigerator according to a third embodiment of the present invention. 7 1335408 Fig. 4 is a front view of a vacuum heat insulating material according to a third embodiment of the present invention. Fig. 5 is a plan view showing a plane other than the front door portion of the refrigerator in the third embodiment of the present invention. Fig. 6 is a schematic cross-sectional view showing a tilting refrigerator according to a third embodiment of the present invention. Figure 7 is a schematic cross-sectional view showing a refrigerator according to a fourth embodiment of the present invention. Fig. 8 is a schematic cross-sectional view showing a refrigerator according to a fifth embodiment of the present invention. Figure 9 is a schematic cross-sectional view showing a refrigerator according to a sixth embodiment of the present invention.

Fig. 10 is a schematic front cross-sectional view showing the front door of the refrigerator according to the seventh embodiment of the present invention. Fig. 11 is a plan view showing a plane other than the front door portion of the refrigerator in the seventh embodiment of the present invention. Figure 12 is a schematic cross-sectional view showing a refrigerator according to an eighth embodiment of the present invention. Figure 13 is a schematic front view of a refrigerator in an eighth embodiment of the present invention. Fig. 14 is a plan view showing a plane other than the front door portion of the refrigerator in the eighth embodiment of the present invention. Figure 15 is a schematic cross-sectional view of a conventional refrigerator.

I [Solution 3] Detailed Description of Preferred Embodiments 20 Hereinafter, embodiments of the present invention will be described with reference to the drawings. (First Embodiment) Fig. 1 is a schematic front view showing a refrigerator according to a first embodiment of the present invention. In the first drawing, the heat insulating box 101 is divided into two heat insulating sections, and the upper and lower parts constitute a revolving door, and the upper part is the refrigerating chamber 102 and the lower part is the freezing compartment 103. Each of the heat insulating sections is provided with 8 1335408 insulated doors, which are respectively the refrigerating compartment revolving door 105 and the freezing compartment revolving door 106 from the top. The refrigerating compartment revolving door 105 is provided with a door inner shelf 134 as a storage space, and a plurality of storage shelves 108 are provided in the refrigerator. The refrigeration cycle is composed of a compressor 116 disposed at the upper portion 150 of the top surface, a condenser 5 117, a capillary (not shown) as a pressure reducer, and an evaporator disposed inside the refrigerator (not shown). It is shown that it is connected in a ring shape.

Hereinafter, the lower end line 145 of the uppermost heat insulating section (refrigeration chamber 102) is first defined. The lower end line 145 is used to separate the center line from above and below the partition wall of the refrigerating compartment 102 and the freezing compartment 103. 10 The upper portion 150 of the top surface of the heat insulating box 101 houses the compressor 116, the condenser 117, the refrigerant pipe, and the like which are the heaviest components of the refrigerator, and the center of gravity of the refrigerator is increased to be easily poured, but on the lower end line 145 The area under which the vacuum heat insulating material 125 is disposed is also increased, that is, the weight of the vacuum heat insulating material 125 disposed below is increased, and the center of gravity of the refrigerator is moved downward to prevent dumping. In this case, since the vacuum heat insulating material 125 is made of an inorganic material, the density is higher than that of the foamed heat insulator 115 such as ethylamine ruthenate used in the upper portion. The foamed heat insulator 115 has a density of 20 to 50 kg/m3, and the vacuum heat insulating material 125 has a temperature of 200 to 250 kg/m3, which is at least four times higher. As described above, since the vacuum insulation 20 which is superior in performance to the foamed heat insulating material is used, the effect of improving the energy saving rate can be obtained without increasing the thickness. Further, in the present embodiment, by forming the upper and lower sections of the refrigerator to form a revolving door which does not cause the drawer-like door panel to move the storage contents in the refrigerator to the outside of the refrigerator, and suppressing the change in the position of the center of gravity, the stability can be improved for the dumping problem. 9 1335408

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(Second embodiment) Fig. 2 is a schematic cross-sectional view showing a refrigerator according to a second embodiment of the present invention. In Fig. 2, the heat insulating box 201 has been divided into two heat insulating sections, and has an upper portion having a rotary door, and a lower portion having a drawer door, and the upper portion is a refrigerating chamber 202 and the lower portion is a freezing chamber 203. Each of the heat insulating sections is provided with a heat insulating door, which is a refrigerating compartment revolving door 205 and a freezer compartment drawer door 206 from the top. A refrigerating compartment swing door 205 and a freezer compartment drawer door 206 are provided with a refrigerating compartment rack 260 and a freezer compartment storage compartment 261 as storage spaces, respectively. The refrigeration cycle is composed of a condenser 217 disposed on the first top surface portion 250, a compressor 216 disposed at a rear of the refrigerator disposed at the first top surface portion 250, and having a second top surface portion 251 lower than the first top surface portion 250. A capillary tube (not shown) as a pressure reducer and an evaporator 220 disposed inside the refrigerator are connected in a ring shape. Here, when the freezer compartment drawer door 206 provided in the lower section of the refrigerator is pulled out, the contents in the freezer compartment storage compartment 261 will move toward the front of the refrigerator, so that the position of the center of gravity of the refrigerator will move largely forward, and the refrigerator will be dumped. The possibility is improved. Moreover, the possibility of dumping is as described in this embodiment. If the freezer compartment storage box 261 can be completely pulled out to the innermost refrigerator, the possibility of dumping will be further increased. However, the refrigerator of this embodiment The weight of the vacuum heat insulating material 225 disposed below is increased, and even if the lower drawer type storage compartment concentrates the load on the lower first 20 squares, the most heavy-weight compressor among the components of the refrigeration cycle can be used. The 216 is located at the rear of the top surface on the diagonal of the load-concentrating portion of the drawer type storage compartment, and suppresses the change in the position of the center of gravity when the drawer door panel is pulled out, thereby improving the stability against the dumping problem. Further, in the present embodiment, even if the door panel of each storage room is removed, only 10 1335408 heat insulating material remains. The gas barrier film 327 can be melted and then cooled under the reduced pressure to maintain the welded portion 328. The end portion of the film required for the welded portion 328 is relatively long compared to the other side portions, so that it is folded back and fixed by an adhesive member (not shown). Since the vacuum heat insulating material 325 is made of an inorganic material, it has a higher density than the foamed heat insulating body 324. The density of the foamed heat insulator 324 is 20 to 50 kg/m3, and the vacuum heat insulating material 325 is 200 to 250 kg/m3' at least four times or more. Further, the sheet-like ceramic fiber formed body 326 can be easily changed in thickness by overlapping a plurality of layers of a certain thickness.

The vacuum heat insulating material 325 having the above-described configuration has excellent workability such as bending and groove deformation, so that the degree of freedom of arrangement of the heat insulating box body is high, and it is also suitable for the key distribution of the lower part of the heat box 10 Assume. Further, since it is in the form of a sheet, a plurality of sheets can be formed as needed, and the desired thickness can be formed correspondingly, and the volume of the vacuum heat insulating material can be effectively changed. Further, since inorganic fibers are used, the long-term generation of gas in the vacuum heat insulating material is small, and the long-term durability of the heat insulating box can be improved. The heat insulating body 301 has been divided into a plurality of heat insulating sections, and the door panel of the uppermost heat insulating section 15 is a revolving door, and the door panel of the lowermost heat insulating section is a drawer door. Starting from the uppermost portion, the refrigerating chamber 302, the drawer type variable greenhouse 329 and the ice making chamber 330, the drawer type capsule chamber 304, and the lowermost drawer type freezing chamber 3〇3 are arranged in this order. The refrigerator compartment revolving door 3〇5, the changing greenhouse drawer door 332, the ice making compartment drawer door 333, the vegetable and fruit compartment drawer door 3〇7, and the freezer compartment drawer door 3〇6 are arranged from the top. ° The refrigerating compartment revolving door 305 is provided with a door built-in rack 334 as a storage space, and a plurality of storage racks 308 are provided in the room. Further, a storage box 335 is provided at the lowermost portion of the refrigerating compartment 3〇2. The temperature of the refrigerating compartment 302 is set at a lower limit of the temperature at which the freezing is not performed, and is set in the refrigerating temperature zone for the purpose of refrigerating storage. Moreover, the storage box 335 is set at a lower temperature of 12 1335408 such as a 3~rc to enhance the freshness of the fish. The fruit and vegetable compartment 304 is set to be 2 to 7 ° C which is equal to or slightly higher than the refrigerator compartment 302. The lower the temperature, the longer the freshness of leafy vegetables can be maintained.

The variable greenhouse 329 can change the temperature setting depending on the needs of the user, so that the temperature can be freely set in the freezer compartment to the temperature zone of the refrigerator and the fruit and vegetable compartment. Further, the ice making compartment 330 is an independent ice protecting compartment, and has an automatic ice making device (not shown), which can automatically produce ice cubes and store them. The room is set to the freezing temperature zone for storing ice cubes, but may be set to a freezing temperature higher than the freezing temperature zone to facilitate the preservation of the ice cubes. 10 15 20 The freezer compartment 303 is set for freezing and storage in the freezing temperature zone. It is usually set at a temperature of 22 to 18 ° C. It may be set to a low temperature such as 30 to 25 ° C to enhance the cryopreservation state. The heat insulating box 301 is provided with a recessed first recess 310 at the rear portion of the top surface. On the lower back wall surface of the first recess 310, a second recess 336 is provided. The refrigeration cycle is constituted by a compressor 316 disposed in the first recess 310, a condenser (not shown), a capillary as a pressure reducer, and an evaporator 320 connected in a ring shape. The evaporator 320 is a forced convection heat exchanger by the cooling fan 321. The condenser (not shown) can be forced air-cooled by a fan, or attached to the inside of the outer casing 323 to form a natural air-cooling type having excellent thermal conductivity, or a partition plate disposed between the heat insulating door bodies of the respective chambers. The combination of piping for water treatment is used. Further, a flow path control mechanism such as an electric three-way valve may be used, and a plurality of evaporators corresponding to the interval configuration and the temperature setting may be used, and a plurality of capillary tubes may be switched, and the air blowing may be stopped during the stop of the compressor 316. The control board 337 for starting the refrigeration cycle is disposed such that the pair of second recesses 336 are sealed in a state in which the detachable state is 13 1335408. Further, the first recessed portion 310 is also substantially hermetically sealed by the detachable back cover 315. Further, the constituent evaporator evaporator 32 of the refrigeration cycle and the cooling fan 321 are disposed at the back of the vegetable compartment 304 located in the middle section. Thereby, the storage compartment 5 of the lowermost stage can be cooled to a minimum of 3〇3, and the volume and inner depth can be maximized. In addition, if the middle section of the vegetable and fruit compartment 304 and the lowermost section of the freezer compartment 3〇3 are formed in opposite configurations, the inner and inner depths of the fruit and vegetable compartment 304 can be increased to the maximum.

Next, the position of the vacuum heat insulating material 325 will be described with reference to the developed view of the heat insulating box 301 of Fig. 5. The vacuum heat insulating material 325 substantially covers the both side surfaces 339, the back surface 340, and the bottom surface 341 of the heat insulating box 10, and is attached to the side surface and the back surface of the storage chamber, and is disposed to the upper portion with reference to the lower portion of each surface. 15

Here, the vacuum heat insulating material 325 attached to the upper portion from the line 345 representing the lower end surface of the uppermost revolving storage compartment 3〇2 is L2, and the vacuum heat insulating material 325 attached to the lower portion is represented by L1. The lower end line 345 of the refrigerating compartment 3〇2 actually means a center line which is used to partition the refrigerating compartment 302 from the lower changing chamber 3 and the upper and lower partition walls of the ice making compartment 330. The total area of the lower vacuum insulation material acetamate is larger than the total area of the upper vacuum insulation material L2, and the attachment position and size thereof are determined accordingly. The first back surface 340 of the heat insulating box 301 is provided with a first four 20th portion 310 in which the compressor 316 is disposed, and a second concave portion 336 on which the control substrate 337 is disposed, and the vacuum heat insulating material 325 is disposed to the second concave portion 336. The height is up. The vacuum insulation 325 used on both sides 339 is also standardized to the same size as the back surface. The bottom surface 341 is provided with four casters 342 as fulcrums for the refrigerator. The vacuum heat insulating material 325 is specially designed to avoid the fulcrums, and is attached to the outer side of the outer box 323 to a maximum of 14 1335408. Caster 342 expands the gap between the casters to the most for lifting stability

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20 limits. Hereinafter, the operation and action of the refrigerator having the above structure will be described. The action of the refrigeration cycle will be explained first. The refrigeration cycle can be operated in response to a temperature set in the refrigerator and based on a signal from the control substrate 337 for cooling operation. The high-temperature high-pressure refrigerant sent by the operation of the compressor 316 can be condensed and liquefied by the heat of the condenser, and decompressed by a capillary tube to form a low-temperature low-pressure liquid refrigerant, which is then sent to the evaporator 320. By the action of the cooling fan 321, the refrigerant in the evaporator 320 exchanges heat with the air in the refrigerator to evaporate and vaporize. The low-temperature cold air is distributed by a damper (not shown) or the like to perform cooling work in each room. Further, when a plurality of evaporators and pressure reducers are used, the refrigerant is supplied to the necessary evaporator 320 by the flow path control means. The refrigerant sent from the evaporator 320 is sucked by the compressor 316. By repeating the above cycle operation, the cooling operation in the refrigerator can be performed. Second, explain the stability against dumping. The first recessed portion 310 at the rear portion of the top surface of the heat insulating box 301 accommodates the compressor 316 and the condenser (not shown) and the refrigerant piping which are heavy in the components of the refrigerator, and the position of the center of gravity of the refrigerator is increased. It is easy to dump. As shown in Fig. 6, a refrigerator which is generally supported at four points with respect to the ground by the casters 342 or the like may be tilted because the center of gravity is located on the outer side of the four perpendicular lines 343 extending from the respective fulcrums in the direction of gravity. Further, the higher the position of the center of gravity, the more the tilt of the refrigerator is caused by the deviation of the setting of the refrigerator and the external force, and the more likely it is to fall under the slight tilt angle 344. In addition, since the refrigerator is built into the storage compartment, the center of gravity of the refrigerator 15 1335408 will change depending on the storage condition, but countermeasures against dumping can be sought as follows. In terms of the convenience of use of the refrigerator, if the upper section is a revolving door type and the lower section is a drawer type storage compartment, the lower end line 345 of the refrigerating compartment 302 of the upper storage compartment is located at a range of about 700 to 1200 mm from the installation surface. Inside, if it is above this range, the drawer storage room will be very inconvenient to use. Moreover, it is also common to see that the front-width dimension of the drawer type storage room is approximately 1000 mm.

Further, the deep dimension of the refrigerator is approximately 600 to 700 mm, and the intersection of the center line 346 of the deep dimension 1/2 of the refrigerator and the lower end line 345 of the refrigerating compartment 302 can be determined and the intersection is inclined with respect to the refrigerator. Produces a stable effect to improve stability. If the position of the caster 342 is located 50 mm from the outer periphery of the refrigerator and the distance from the center line 346 is 250 mm, the inclination angle 344 of the ground is about 12° with respect to the highest position of the lower end line 345 of the refrigerating chamber 302 of 1200 mm. The intersection point 347, 15 is located on the outer side of the perpendicular line 343 in the direction of gravity extending from the fulcrum.

Therefore, the arrangement area of the vacuum heat insulating material L1 below the lower end line 345 of the refrigerating compartment 302 is larger than the arrangement area of the vacuum heat insulating material L2 above, and the weight can be increased in the stable direction with respect to the intersection point 347. In the refrigerator of the embodiment, the weight of the vacuum heat insulating material disposed below is increased, and the estimated setting angle of the refrigerator can be set in the range of 0° to 1〇°, so that the center of gravity of the refrigerator is extended from the fulcrum. The inside of the vertical line 343 in the direction of gravity. Further, by means of the revolving door in the upper portion of the refrigerator which does not cause the contents of the refrigerator to move toward the outside of the refrigerator, it is possible to suppress the change in the position of the center of gravity of the uppermost portion, thereby improving the stability against dumping. 16 1335408 Furthermore, the weight of the section of the drawer storage compartment due to the switch and disassembly of the door panel is extremely variable. The vacuum insulation material 325 is mainly disposed on the heat insulation wall around the drawer type storage room with the large weight change, so that the weight of the heat insulation box body 3 can be increased, and the influence of the weight change is reduced, and the dumping is reduced. The possibility of this. Moreover, in the refrigerator of this embodiment, even if the vacuum insulation provided below is provided

The weight of the material 325 is increased 'and the load is applied to the lower front side by the cold chamber 3〇3 of the lower drawer type storage room, the vegetable and fruit room 304, etc.', so that the most heavy compressor 316 among the components of the refrigeration cycle is located in the drawer type. The rear part of the top of the diagonal line of the storage compartment, such as the cold room 3〇3, the vegetable and fruit room 304, etc., can suppress the drawer compartment door 306 of the drawing type 10, the drawer door 307 of the vegetable and fruit room, etc. When the position of the center of gravity changes, the result is improved to prevent the stability of the dump. Further, when the freezing compartment 303, the vegetable compartment 3, and the like of the drawer type storage compartment are opened, the weight of the heat insulating box 301 can be increased even if the components and storage contents of the storage compartment are removed to the outside of the heat insulating box 3〇1. Therefore, it can improve the stability of preventing the dumping toward the front.

In addition, even if the freezer compartment 3〇3, the vegetable and fruit compartment 3〇4, etc. of the drawer type storage compartment have been removed, since the lower weight can be increased from the drawer type storage compartment of the heat insulating box, the stability against dumping can be improved. Further, since the structure of the lower end portion of the heat insulating box 301 does not include a cold-cooling cycle such as the compressor 316, a simple wall surface can be formed, and a flat vacuum heat insulating material 325 is disposed from the lowermost end of each wall surface. Thereby, the vacuum heat insulating material 325 can be disposed at a low cost and at a low number of operations. Further, since the heat insulating property is superior to the vacuum heat insulating material 325 of the foamed heat insulator 324, the internal volume is reduced without increasing the thickness, and the energy rate of the knot 17 1335408 can be improved. Further, by disposing the condenser having a high temperature due to the reverse operation on the top surface of the heat insulating box 301, the heat insulating performance due to heat sealing is not reduced, and the energy saving effect can be further achieved. 5 Further, when the drawer type storage compartment is located 1/2 or less of the height of the heat insulating box 301, it is preferable to use the lower end line line 345 of the refrigerating compartment as the center line of 1/2 of the height direction of the heat insulating box 301 for stabilization. Sex.

Further, although one piece of the vacuum heat insulating material 325 is attached to each surface, the same piece of vacuum heat insulating material 10 325 which is attached to both side surfaces 339 and the back surface 340 may be attached, or the bottom surface 341 and the back surface 340 may be 340. The same piece, the two side faces 339 and the bottom face 341 are the same piece, and the number of sheets of the vacuum heat insulating material 325 is reduced to reduce the number of work and the like. Further, in the present embodiment, the total area of the vacuum heat insulating material L2 attached to the upper portion of the lower end line 345 of the refrigerating chamber 302 of the uppermost revolving storage compartment is smaller than that of the vacuum insulation attached to the lower portion. The total area of the material L1, but considering the cost ratio of the product, the concept may be further developed. That is, the vacuum heat insulating material 325 may not be disposed in the refrigerating chamber 302 of the uppermost heat insulating section, but only in the lower heat insulating section, such as the freezing compartment 303, the variable greenhouse 329, and the ice making compartment 330, but Not limited to them. Therefore, the heat insulation of the refrigerating compartment 302 in the refrigerating temperature zone section where the temperature difference from the outside air temperature is small is not required to be emphasized, and the vacuum heat insulating material 325 is not provided, but the vacuum insulation material can be suppressed. 325 caused the upper part of the center of gravity of the refrigerator to move, and the substantial benefit of preventing dumping was obtained. Further, the lower portion of the freezing temperature zone having a large temperature difference from the outside air temperature is used. (Sixth embodiment) FIG. 9 is a schematic cross-sectional view showing the refrigerator according to the sixth embodiment of the present invention. The frozen juxta ring is provided by a compressor 616 disposed at the rear surface portion 650, a condenser 670 disposed in a space on the bottom surface of the refrigerator, a capillary tube (not shown) as a pressure reducer, and disposed inside the refrigerator 5 The evaporator 620 is connected in a ring shape to constitute a person. The upper storage compartment of the heat insulation box 601 is a refrigerating compartment 6〇2, which has a refrigerating compartment

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The swing door 605 and the lower storage compartment are a freezer compartment 603, which is a drawer type storage compartment having a freezer drawer door 606. The vacuum heat insulating material 625 is substantially entirely covered and attached to the periphery of the freezing compartment 603 of the drawer type storage compartment provided in the lower portion of the heat insulating box 601. In particular, in the present embodiment, the heat insulating wall between the refrigerating chamber 602 and the freezing chamber 603 is also provided with a vacuum heat insulating material 625. According to the above configuration, since the vacuum heat insulating material 625 and the condenser 670 having a large weight are disposed on the bottom surface of the refrigerator, even if the ice phase of the compressor 616 is disposed on the top surface, the position of the center of gravity is greatly reduced, even if When the drawer type freezer drawer door 606 is pulled out, the load is applied to the lower front portion, so that the most weighty compressor 616 among the components of the refrigeration cycle is located on the top surface of the load line of the drawer storage chamber. At the rear, the position of the center of gravity when the drawer door is pulled out can be suppressed, and as a result, the stability against dumping can be improved. By the above composition, the change in the position of the center of gravity can be suppressed, and the stability against dumping can be improved. (Embodiment 7) Fig. 10 is a schematic front elevational view showing the front door of the refrigerator according to the seventh embodiment of the present invention. Figure 11 is a plan view showing the plane outside the front door of the refrigerator. 21 1335408

In the tenth figure, the compressor 716 is disposed on the top surface of the heat insulating box 701. Further, the upper storage compartment is used in the refrigerating compartment 7〇2 of the refrigerating temperature zone, and the lower storage compartment is used in the freezing compartment 703 of the freezing temperature zone. The thick wall of the refrigerator is formed of a foamed heat insulating material 715 such as ethylamine citrate, and the refrigerating chamber 702 and the freezing chamber 703 are the same. The lower storage compartment is further provided with a vacuum insulation material 725 in addition to the foam insulation material 715 to form a heat insulation layer, and the wall thickness of the freezer compartment 703 is greater than the wall thickness of the refrigerator compartment 702 and exists, for example, 5 to 30 mm. The difference. The arrangement position of the vacuum heat insulating material 725 will be described with reference to the developed view of the heat insulating box 701 of Fig. 11. The vacuum heat insulating material 725 is substantially completely covered on both side surfaces 739, 740, and 740 of the heat insulating box 701, and is attached to the side surface and the back surface of the storage chamber, and is disposed to the upper portion with reference to the lower portion of each surface. In the present embodiment, the vacuum heat insulating material 725 is from the lower end line 745 of the upper storage chamber 702 toward the lower portion.

20 attached. As a result, since the vacuum insulation material 725 is attached to the lower portion of the refrigerator except for the door panel, the center of gravity of the refrigerator itself other than the door portion can be greatly lowered, and the stability of the dumping can be improved. Further, since the wall thickness of the lower storage compartment is larger than that of the upper portion, the center of gravity can be maintained at a low position, and the stability of the dumping prevention can be improved. Therefore, it is not preferable to increase the heat insulation of the refrigerating compartment 702 in the refrigerating temperature zone section where the temperature difference from the outside air temperature is small, and the vacuum heat insulating material 725 is not provided, but the vacuum heat insulating material 725 can be suppressed. The upper part of the center of gravity of the refrigerator is moved to obtain the substantial benefit of preventing dumping. On the other hand, in the freezer compartment 703 in the lower section of the freezing temperature zone which has a large temperature difference from the outside air temperature, the vacuum insulation material can be provided with a focus to obtain the energy saving property due to the improvement of the heat insulation property, and the lower part of the center of gravity of the refrigerator. The dual benefits of moving to prevent dumping. By combining the temperature of the two sections 22 1335408 with the effective arrangement of the vacuum insulation material, the energy saving and dumping prevention of the refrigerator body in the upper section and the lower section can be reasonably realized. Further, in the present embodiment, although the heat insulating door is provided in each of the upper and lower heat insulating sections, 5, since the upper refrigerating chamber door is rotated, that is, the storage contents in the refrigerator are not moved toward the outside of the refrigerator, and the position of the center of gravity can be suppressed. Change to improve stability against dumping.

Further, the evaporator (not shown) of the present embodiment is disposed on the flat surface in the vertical direction on the back side of the lower storage compartment, but is disposed in the front-rear direction of the refrigerator at the bottom of the freezing compartment 10 703 of the lower storage compartment. This will further reduce the position of the center of gravity of the refrigerator and improve the stability against dumping. (Embodiment 8) FIG. 12 is a schematic cross-sectional view showing a refrigerator according to an eighth embodiment of the present invention, and FIG. 15 is a schematic front view showing a refrigerator, and FIG. 14 is a plan view showing a plane outside the front door of the refrigerator. Figure. In the figures 12 and 13, the heat insulating box 801 has a heat insulating wall formed by injecting the foamed heat insulator 804 into the space formed by the inner box 802 and the outer box 803. 20 In order to improve the energy saving rate, in the space formed by the inner box 802 and the outer box 803 before foaming, the heat insulating performance is 5 to 20 times that of the foamed heat insulator 804, and the vacuum heat insulating material 805 can be foamed. The heat insulator 804 is foamed together. The vacuum heat insulating material 805 is made of an inorganic material such as glass fiber to form a density higher than that of the foamed heat insulator 804. The density of the foamed insulation 804 is 20~50kg/m3, and the vacuum insulation 805 is 200~250 kg/m3, which is at least 4 23 1335408 times. The heat insulating box body 801 has been partitioned into a plurality of heat insulating sections, the door panel of the uppermost heat insulating section is a revolving door, and the door panel of the lower heat insulating section is a drawer type. The refrigerator compartment 806, the left and right drawer type greenhouse 807 and the ice making compartment 5 808, the drawer type vegetable and fruit compartment 809, and the lowermost drawer type freezer compartment 810 are formed in order from the top. Each of the heat insulating sections is provided with a heat insulating door by a gasket 811. From top to bottom, there are a refrigerating compartment revolving door 812, a changing greenhouse drawer door 813, an ice making compartment drawer door 814, a vegetable compartment drawer door 815, a cold, and an east chamber drawer door 816.

The heat insulating box 801 is provided with a recessed recess 817 at the rear of the top surface, and the refrigeration cycle 10 is composed of a compressor 818 disposed in the recess 817, a condenser (not shown), a capillary as a pressure reducer, and an evaporator. 819 is connected in a ring shape. The evaporator 819 is a forced convection heat exchanger by means of a cooling fan 820. The condenser (not shown) can be forced air-cooled by a fan, or attached to the inside of the outer box 803 to form a natural air-cooling type with excellent thermal conductivity, or a partition plate disposed between the heat insulating door bodies of the respective chambers. The combination of high-pressure piping for 15 water treatment is used. The control board 821 for starting the refrigeration cycle is disposed so as to be closed by a detachable cover plate below the recess 817. Further, the recess 817 is also substantially hermetically sealed by a detachable cover. When the height of the heat insulating box 801 is H0 and the height 20 of the refrigerating chamber revolving door 812 is H1, H1 is preferably about 1/2 of the half of H0, and is set to be equal to about half of it (1/2). Further, the height of the upper greenhouse drawer door 813 and the ice making compartment drawer door 814 is H2, the height of the vegetable compartment drawer door 815 below it is H3, and the height of the lowermost freezer drawer door 816 is The size is H4, which makes H2 the smallest of the three, and establishes the relationship of H2 < H3, H2CH4. 24 1335408 The position of the vacuum insulation material 805 is explained with reference to the development of Fig. 14. The vacuum heat insulating material 805 is placed on the side surfaces, the back surface, and the bottom surface of the heat insulating box 8〇1, and is attached to the side surface and the back surface of the storage chamber, and is disposed on the upper side with respect to the lower portion of each surface. From the line 845 of the lower end of the refrigerating chamber 8〇6 representing the uppermost revolving storage compartment (actually representing the lower end of the uppermost insulation section, it is used to separate the refrigerating compartment 806 and the lower storage compartment) Change the greenhouse 8〇7, the center line above and below the partition wall of the 8制8 area of the ice making room) The vacuum insulation material 8〇5 attached to the upper part is in the l4r table, and the vacuum insulation material 805 attached to the lower part is Represented by L3. The position and size of the vacuum insulation material 805 are determined according to the principle that the total area of the L3 is greater than 匕4. Specifically, the H0 of a multi-door refrigerator of 5 to 6 doors which is more convenient is generally used, and the H1 is about 800 mm, and the hi of the present invention is approximately 1/2 of 900 mm. Therefore, the height of the lower end of the refrigerating chamber 806 from the setting surface is H0 - H1 is about 900 mm. This is the storage space on the door panel 812 of the refrigerating compartment 8〇6 and the storage space inside the refrigerator. When you store food in the bottom 15 sections of storage space, you don't need to lift your elbows and so on.

The height of the Na. In particular, if the drawer type storage portion is provided at the lowermost portion of the refrigerating chamber 806, the pulling operation will be smoother and the storage operation will be smoother. Moreover, the increase of H1 will cause the capacity of the refrigerating chamber 8〇6 to increase and the capacity of the drawer chamber to be reduced, but compared with the conventional refrigerator 20 in which the compressor 818 is usually installed in the lower part of the refrigerator, The compressor 818 is disposed behind the top surface of the refrigerating chamber 806. The internal volume of the refrigerating chamber 806 can be reduced, and the internal volume of the lower drawer portion can be increased. As a result, the balance of the internal volume of the refrigerator can be maintained. Big H1. Hereinafter, the dumping prevention stability of the refrigerator having the above configuration will be described. The concave portion 817 at the rear portion of the top surface of the heat insulating box body 801 accommodates the refrigerator 25 1335408

10 15

20 Compressor 818 and condenser (not shown) with heavy components t and refrigerant piping will increase the position of the center of gravity of the refrigerator and cause it to fall over easily. Generally, a refrigerator that is supported at four points by the caster 822 or the like on the ground may have a dumping if its center of gravity is located outside the four perpendicular lines extending from the fulcrums in the direction of gravity. Therefore, the higher the position of the center of gravity, the easier it is to tilt due to the deviation of the small refrigerator and the tilt of the refrigerator caused by the external force. The lower the position of the center of gravity, the less likely it is to fall. Therefore, when a weight such as the compressor 818 is disposed on the top surface, lowering the position of the center of gravity contributes to the stability of the dump prevention. Therefore, if the height H1 of the refrigerating chamber revolving door 812 is about 1/2 of the height H0 of the heat insulating box 801, the line 845 representing the lower end surface of the refrigerating chamber 806 can be positioned substantially above and below the heat insulating box 801. The center. Moreover, compared with the drawer door, the revolving door is less likely to move the storage item on the inner frame of the refrigerator, so the movement of the center of gravity is also reduced, so that the movement of the center of gravity of the upper half of the heat insulating box 801 can be suppressed, and the dumping prevention can be prevented. stability. Moreover, if the lower end surface of the refrigerating compartment 806 is further lowered, the stability of the pouring prevention can be improved, and the area of the opening of the front surface of the refrigerating compartment 806 can be enlarged, and the storage space of the revolving door revolving door 812 can be enlarged. At the same time, the storage operation of the food in the refrigerating compartment 806 is facilitated. Therefore, the convenience of use of the refrigerating compartment 806 having the highest frequency of use can be improved, and the convenience of use of the entire refrigerator can be further improved. Moreover, the section of the drawer door is compared with the section of the revolving door, and the section of the drawer door is designed by the structure of the drawer sliding door and the structure of the sliding rail holding member/case which are required to support the storage object. The lower half of the heat insulating box 801 can lower the center of gravity and improve the stability against dumping. 26 In addition, as the number of doors in the drawer type is increased, the constituent members are increased, and the weight of the lower portion of the heat insulating box 801 is also increased to lower the center of gravity, thereby improving stability. However, since the useless space caused by the components is increased and the storage capacity is reduced, the drawer type structure which is divided into three sections in the vertical direction is advantageous in that both the internal product and the stability are satisfied. Secondly, since the height H2 of the uppermost greenhouse door drawer 813 and the ice making compartment drawer door 814 in the drawer door is higher than the height H3 of the fruit and vegetable compartment drawer door 815 and the height H4 of the cold room drawer door 816. The smallest of the three, so that the inner volume and the storage capacity can be minimized by forming substantially the same depth and width, and the change in the center of gravity is controlled to a small extent. Further, since the inner volume and the storage capacity of the lower transfer chamber 809 and the freezer compartment 810 can be made large, when the upper drawer door is opened, the storage object can be placed at a lower position, and the stability of the dumping can be prevented. Sex. Moreover, since the uppermost drawer section is divided into at least two left and right portions, respectively, the change greenhouse 807 and the ice making chamber 808, the weight and the internal volume of the individual door panels can be reduced, and thus the upper drawer door opening can be reduced. The change in center of gravity is achieved, and the stability against dumping can be achieved. In addition, if the vegetable and fruit chamber 809 and the freezing chamber 810 are arranged oppositely, when the bottle storage rack is placed in front of the vegetable and fruit room, opening the vegetable and fruit room drawing door 815 will cause a large movement of the center of gravity, so that it is disposed at the lowermost portion, affecting It can be greatly reduced, and the stability can be improved. Further, a cooling system such as an evaporator 819, a cooling fan 820, a flow rate control valve (not shown), and a wind control panel (not shown) is disposed on the back side of the heat insulating section having a lower portion of the drawer door. The heavier mechanism 27 1335408 made of motor and metal material balances the movement of the center of gravity with respect to the opening of the drawer door, and improves the stability against dumping. However, the vacuum insulation material 805 is disposed around the drawer-type storage compartment section where the center of gravity movement is more obvious, so that the body weight of the heat insulation box body 8〇1 can be increased, the movement of the center of gravity 5 can be suppressed, and the stability of the dumping can be prevented. Sex.

In addition, in the present embodiment, since the line 845 representing the lower end surface of the refrigerating chamber 806 of the uppermost revolving storage compartment is set to the center of the heat insulating box 8〇1, the stability is achieved, and the vacuum is separated. The hot material 8〇5 constitutes a total area of the L4 portion attached from the line 845 to the upper portion, and is attached to the lower portion from the line 845. The total area of the department, so the use of the 10 line 845 itself can be reduced to suppress the use of vacuum insulation material 805, to achieve the stability of the map, and to gain an advantage in the cost. Furthermore, the cold chamber 810 and the variable greenhouse 807, which have excellent heat-insulating properties and excellent energy-saving effects, are disposed below the drawer section, so that the vacuum insulation material around the low temperature section can be arranged and stabilized. A combination of sexual improvement.

INDUSTRIAL APPLICABILITY According to the refrigerator of the present invention, in addition to sufficiently ensuring the internal volume and depth of the lowermost storage compartment, the stability of the refrigerator setting can be increased, and the dumping prevention property can be improved, so it is also suitable for business. It is used in large refrigerators and freezers, ice temperature display cabinets and other cold equipment. 28 1335408

10 I: BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view of a refrigerator according to a first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing a refrigerator according to a second embodiment of the present invention. Fig. 3 is a schematic perspective view of a refrigerator according to a third embodiment of the present invention. Fig. 4 is a perspective view showing a vacuum heat insulating material according to a third embodiment of the present invention. Fig. 5 is a plan view showing a plane other than the front door portion of the refrigerator in the third embodiment of the present invention. Fig. 6 is a schematic cross-sectional view showing a tilting refrigerator according to a third embodiment of the present invention. Figure 7 is a schematic cross-sectional view showing a refrigerator according to a fourth embodiment of the present invention. Fig. 8 is a schematic cross-sectional view showing a refrigerator according to a fifth embodiment of the present invention. Figure 9 is a schematic cross-sectional view showing a refrigerator according to a sixth embodiment of the present invention. Fig. 10 is a schematic front cross-sectional view showing the front door of the refrigerator according to the seventh embodiment of the present invention. 15

Fig. 11 is a plan view showing a plane other than the front door portion of the refrigerator in the seventh embodiment of the present invention. Figure 12 is a schematic cross-sectional view showing a refrigerator according to an eighth embodiment of the present invention. Figure 13 is a schematic front view of a refrigerator in an eighth embodiment of the present invention. Fig. 14 is a plan view showing the plane other than the front door portion of the refrigerator in the eighth embodiment of the present invention. Figure 15 is a schematic cross-sectional view of a conventional refrigerator. 29 1335408 [Main symbol representative symbol table of the drawing] 1···Insulation box 2...Refrigerator compartment 3···Freezer compartment 106...Freezer compartment revolving door

4...Vegetable Room 5···Refrigerator Room Revolving Door 6···Freezer Drawer Door 7···Vegetable Room Draw Door 8... Storage Rack 9···Storage Container 10...Recess 11...Outer Box Top Surface 12... Outer box back surface 13···Upper plate 14...Back plate 15...Recess cover plate 16...Compressor 17...Condenser 18...Mechanical room fan 20...Evaporator 21...Cooling fan 101···Insulation box 102... Refrigerated Room 103...cold; east room 105...refrigerator room revolving door 108···receiving rack 115...foaming heat insulator 116···compressor 117···condenser 125...vacuum heat insulating material 134···door built-in The shelf 145···lower end line 150...top top part 201···heat insulation box 202·.·refrigeration chamber 203...cold; east room 205···refrigerator room revolving door 206...cold; east room drawer Door 216...compressor 217···condenser 220...evaporator 225···vacuum heat insulating material 250···first top surface portion 251...second top surface portion 260·.·refrigeration chamber frame 261···cold; East room storage box 30 1335408

301...heat insulation box 302...refrigeration chamber 303...cold; east room 304...fruit and vegetable room 305.·.refrigerator room revolving door 306···freezer drawer door 307···fruit and vegetable room drawer door 308···receiving rack 310".1st recess 315···back cover 316...compressor 320...evaporator 321···cooling fan 322...inner box 323...outer box 324...foaming insulator 325···vacuum insulation 326···Ceramic fiber molded body 327... gas barrier film 328...welding part 329···variable greenhouse 330·· ice making room 332...greenhouse drawer door 333...ice room drawer door 334...door built-in rack 335...storage bin 336···second recess 337...control board 339···two side surfaces 340...back surface 341··· bottom surface 342··· caster 343···vertical line 344...inclination angle 345...lower end line 346· · Center line 347 ··· intersection 401···heat insulation box 425...vacuum heat insulation material 445···removal chamber lower end line 448.··vacuum heat insulation material 501···heat insulation box 503... Cold; East Room 506·. Freezer drawer door 521... Cooling fan 524... Foamed insulation 525···Vacuum insulation 601···Insulation box 31 1335408

602...refrigeration chamber 603...cold; east chamber 605...refrigerator chamber revolving door 616...compressor 620...evaporator 625···vacuum heat insulating material 650···top rear portion 670...condenser 701···insulation Case 702...Refrigeration chamber 703...Cold room 715...Foam insulation 716···Compressor 725···Vacuum insulation material 739···Two side faces 740...Back surface 741···Bottom surface 745··· Lower end line 801···heat insulation box 802... inner box 803... outer box 804... foam insulation 805·.·vacuum insulation material 806...refrigeration room 807···change greenhouse 808·.. ice making Room 809...Vegetable Room 810...Freezer Room 811...Gasket 812···Refrigerator Room Revolving Door 813···Change Greenhouse Drawer Door 814·.·Ice Room Drawer Door 815···Vegetable Room Drawer Door 816··· Cold; East room drawing door 817·.·Concave part 818···Compressor 819...Evaporator 820···Cooling fan 821···Control board 822... Caster 845... represents the line L1 of the lower end surface of the refrigerating chamber 806 ·Lower vacuum insulation material L2···Upper vacuum insulation material 32

Claims (1)

1335408 X. Patent application scope: 1. A refrigerator having a heat insulation box, wherein the heat insulation box is provided with a compressor on the top surface, and at least two heat insulation intervals are arranged in the up and down direction. 5, the heat insulation box system is composed of an inner box, an outer box, a foamed heat insulator and a vacuum heat insulating material having a density larger than the foamed heat insulator, and is disposed at the uppermost portion in the heat insulating section. The uppermost heat insulating section is located around the lower heat insulating section, and the vacuum heat insulating material is disposed on the side surface, the back surface, and the bottom surface, and is also disposed on the upper heat insulating partition wall, and the heat insulating partition wall is insulated from the uppermost portion. The total weight or volume of the vacuum heat insulating material disposed above the lower end surface of the section is larger than the total weight or volume of the vacuum heat insulating material disposed below the lower end surface of the uppermost heat insulating section. The refrigerator according to claim 1, wherein the compressor is disposed in a recess formed in the rear of the top surface portion, and a revolving door is disposed in the uppermost heat insulating section, and the lowermost heat insulating section is provided. There is a drawer door. 3. The refrigerator of the old patent application scope, wherein the lowermost portion of the heat insulating box has a cold with a drawer door; an east chamber, and in addition to the aforementioned drawing door, the cold beam to the two sides of the circumference, The back and bottom surfaces are provided with a vacuum heat insulating material having a density greater than that of the above-mentioned foamed heat insulator. 4, such as the towel 6 stomach patent range of the refrigerator in which the above-mentioned uppermost insulation section - also set in the refrigerated compartment of the refrigerated shirt - and at least one of the lower insulation section _ set in the cold 4 temperature zone cold In the shirt, the cold wire has the aforementioned vacuum insulation material. 33 (3) M08 5. The refrigerator of claim 4, wherein the vacuum heat insulating material is disposed only in the lower heat insulating section. The vacuum heat insulating material mentioned above is a refrigerator which is in accordance with the first item of the patent application scope, a gas film is coated with a sheet-like inorganic fiber assembly, and is internally decompressed. 34