WO2006106900A1

WO2006106900A1 - Refrigerator

Info

Publication number: WO2006106900A1
Application number: PCT/JP2006/306797
Authority: WO
Inventors: Takunan Esaka; Tatsuya Kawasaki
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2005-04-01
Filing date: 2006-03-31
Publication date: 2006-10-12
Also published as: TW200641315A; CN101103238B; CN101103238A; TWI347424B

Abstract

A refrigerator having a compressor (120) on a top surface section of a heat insulating box body (101). A refrigeration room is integrally formed by placing a foam heat insulation material (132) in a heat insulating segment that forms a refrigeration room (110) as the uppermost storage room. This increases rigidity of the uppermost storage room, and as a result, vibration generated by the compressor placed on the top surface section of the uppermost storage room can be suppressed from propagating to a refrigerator body. Also, such a phenomenon that the vibration from the compressor propagates to other paths and noise occurs by vibration of the parts can be suppressed from occurring.

Description

Specification

Refrigerator

Technical field

[0001] The present invention relates to a refrigerator in which a compressor is mounted on a top surface portion.

Background art

[0002] In recent years, refrigerators have been demanded to improve the use, convenience, and storage properties as the power of the viewpoint of protecting the global environment has further increased.

[0003] In order to increase the storage capacity of the storage room disposed in the lowermost part of the conventional refrigerator, a recessed part is provided that is recessed so that the back of the uppermost part of the storage room of the thermal insulation box is lowered, A method of storing the components of the refrigeration cycle in the recess was taken. This technical content is disclosed in Japanese Patent Publication No. 2001-99552.

FIG. 13 is a cross-sectional view of this conventional refrigerator. In FIG. 13, the conventional refrigerator is foamed between the outer box 2 that forms the outer wall of the heat insulation box 1, the inner box 3 that forms the inner wall of the heat insulating box 1, and the outer box 2 and the inner box 3. Filled urethane insulation 4 forces, and in the order of increasing force, it has a refrigerator room 5, a freezing room 6, and a vegetable room 7. A refrigerator door 10 is provided at the front opening of the refrigerator compartment 5. In addition, the freezer compartment 6 and the vegetable compartment 7 located in the lower part from the center of the heat insulation box 1 have drawer type freezer compartment drawer doors 1 1 and vegetable compartment drawers that can be easily removed for easy storage and convenience. Door 12 is provided.

[0005] The recessed portion 20 provided in the heat insulating box 1 is a place where the top rear portion over the outer box upper surface 21 and the outer box rear surface 22 is recessed so that the uppermost rear portion of the refrigerator compartment 5 is lowered. The left and right sides of the recess 20 are closed by the left and right walls of the heat insulating box 1 and open upward and backward. The open portion of the recess 20 is covered with a recess cover 25 including an upper plate 23 and a back plate 24 substantially perpendicular to the upper plate 23. The recess cover 25 is detachably fixed to the heat insulating box 1 with screws or the like.

[0006] The compressor 31 and the condenser 32, which are components constituting the refrigeration cycle, are arranged so as to be accommodated in the recess 20 together with the machine room fan 33, and are covered with a recess cover 25. Further, the upper plate 23 and the back plate 24 of the concave cover 25 are provided with a plurality of ventilation holes 34 for heat dissipation. [0007] In addition, the evaporator 35, which is a component of the refrigeration cycle, is disposed with the cooling fan 36 on the back of the freezer compartment 6, and the vegetable compartment 7, which is the lowest storage compartment, is configured deeply. The

[0008] With such a configuration, the conventional refrigerator is deeply configured to increase the internal volume of the vegetable compartment 7, as compared with the case where the compressor 31 and the condenser 32 are housed in the lower back of the heat insulating box 1. it can. In addition, even if the high-pressure device is arranged at the upper part of the heat insulation box 1, the center of gravity of the heat insulation box body 1 is lowered due to the increase in the weight stored in the vegetable room 7, which is the lowest storage room, and stability can be achieved.

[0009] However, in the above-described conventional configuration, the compressor 20 that is a source of noise and vibration of the refrigerator and the machine room fan that cools the compressor are housed in the recess 20; Permeates into the cabinet. Especially when the user opens the refrigerating compartment revolving door 10, it leaks to the front of the refrigerator and immediately, as a result, the position of the recess 20 is close to the height of the human ear, so the noise that can be heard from it is very worrisome. There was a problem of becoming.

[0010] The frame of the heat insulating box has a three-layer structure in which the inner heat insulating material is covered with an inner box and an outer box made of, for example, a thin ABS resin of about 2 mm. As a result, the shape was not a rectangular shape but an irregular shape, and the strength was insufficient. Therefore, when the compressor and the machine room fan are operated, the vibration caused by these propagates directly to the heat insulation box, and the refrigerator body resonates to generate a large vibration. Furthermore, there was a problem when these vibrations propagated to other parts (for example, food storage shelves in the refrigerator) and noise was generated due to the vibration of the parts.

Disclosure of the invention

[0011] The present invention solves the above-described conventional problems. In a refrigerator in which a sound source such as a compressor or a machine room fan is installed on the top surface of a heat insulating box, noise generated from the sound source is reduced and vibration is reduced. Propagation is suppressed and a low noise refrigerator is provided.

[0012] In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a heat insulating box provided with at least three or more heat insulating compartments in the vertical direction, and a front opening of the storage room. And a compressor disposed on the top surface of the heat insulation box. The heat insulation box is formed by filling and foaming a foam heat insulating material, and is formed surrounding the uppermost storage chamber. The heat insulation box is integrally molded with foam insulation. [0013] This increases the rigidity of the uppermost storage chamber, and suppresses vibrations generated from the compressor disposed on the top surface of the uppermost storage chamber from propagating to the refrigerator body. be able to. In addition, it is possible to suppress the generation of noise due to the vibration generated by the compressor force being propagated to other parts (for example, food storage shelves in the refrigerator).

[0014] The refrigerator of the present invention can suppress the vibration generated from the compressor from propagating to the refrigerator main body, so that low vibration and noise can be reduced in the refrigerator in which the compressor is arranged on the top surface. Can be provided.

Brief Description of Drawings

FIG. 1 is a schematic cross-sectional view of a refrigerator according to Embodiment 1 of the present invention.

FIG. 2 is a schematic cross-sectional view of the refrigerator in the second embodiment of the present invention.

FIG. 3 is a perspective view showing a configuration before heat insulation foaming of a recessed portion of a refrigerator according to Embodiment 2 of the present invention.

FIG. 4 is a perspective view showing a configuration after heat insulation foaming of the refrigerator according to Embodiment 2 of the present invention.

FIG. 5 is a front view of the refrigerator in the third embodiment of the present invention.

FIG. 6 is a front view of the cabinet with the refrigerator door opened in Embodiment 3 of the present invention.

FIG. 7 is a sectional view taken along line 7-7 in FIG.

FIG. 8 is a perspective view of a recess in Embodiment 3 of the present invention.

FIG. 9 is an exploded perspective view of a partition body in Embodiment 3 of the present invention.

FIG. 10 is a bottom view of the partition.

FIG. 11 is an exploded perspective view of a partition body.

FIG. 12 is a top view of the partition.

FIG. 13 is a cross-sectional view of a conventional refrigerator.

Explanation of symbols

[0016] 100, 200 Refrigerator body

101, 201 Insulation box (insulation wall) 110, 210, 322 refrigerator compartment

120, 220, 331 compressor

130, 230, 327 outer box

131, 231, 328 Inner box

132, 232, 329 Foam insulation

133, 237, 238, 318, 319, 320, 321 divider

140, 240 Vacuum insulation

233 Cover member

235 Reinforcing member

250, 330 recess

260 Side wall

110a, 210a, 322a refrigerator compartment door

333 Cold P

339, 344 Thermal insulation

340, 343 hole

BEST MODE FOR CARRYING OUT THE INVENTION

[0017] The refrigerator of the present invention includes a heat insulating box provided with at least three or more insulated compartments in the vertical direction, a door provided in a front opening of the storage room, and a top surface portion of the heat insulating box. The heat insulating box is formed by filling and foaming a foam heat insulating material, and the heat insulating box formed surrounding the uppermost storage chamber is integrally formed with the foam heat insulating material. It is a thing.

[0018] This increases the rigidity of the uppermost storage chamber, and suppresses vibration generated from the compressor disposed on the top surface of the uppermost storage chamber from propagating to the refrigerator body. be able to. In addition, it is possible to suppress the generation of noise due to the vibration generated by the compressor force being propagated to other parts (for example, food storage shelves in the refrigerator).

[0019] The refrigerator of the present invention has a recessed portion at the rear of the top surface of the heat insulating box and a compressor in the recessed portion, and the heat insulating wall forming the back of the top surface of the uppermost storage chamber is stepped by the recessed portion. Condition A heat insulation box formed to surround the uppermost storage chamber including the step portion may be integrally formed of foam heat insulating material.

[0020] Accordingly, even when the uppermost storage chamber has a complicated shape having a stepped portion that tends to be less rigid than a simple rectangular shape, the rigidity of the uppermost storage chamber is increased. Therefore, it is possible to suppress the propagation of the vibration generated by the compressor force disposed at the top of the uppermost storage room to the refrigerator main body. In addition, it is possible to suppress the generation of noise caused by vibrations generated from the compressor being propagated to other parts (for example, food storage shelves in the refrigerator) and vibrating the parts.

[0021] Further, since the front side of the compressor is formed of a heat insulating wall, noise transmission to the front side of the refrigerator is suppressed, and the recess is also integrally formed with the uppermost storage chamber. As a result, noise leakage transmitted from the compressor to the inside of the cabinet can be reduced, so that noise from the refrigerator can be reduced.

[0022] In the refrigerator of the present invention, the recessed portion has side walls on both sides, and the foamed heat insulating material is filled and foamed in the heat insulating compartment forming the uppermost storage chamber of the heat insulating box, the side wall of the recessed portion, and the heat insulating box. by doing

The heat insulating wall of the uppermost storage room and the side wall of the recess may be integrally formed.

[0023] Thus, noise transmission to the front side of the refrigerator is suppressed by surrounding the front and left and right sides of the compressor with heat insulating walls. Furthermore, since the side wall of the recess is also integrally formed with the heat insulating box, the leakage of noise transmitted into the compressor powerhouse can be reduced, so that the noise of the refrigerator can be reduced.

[0024] The refrigerator of the present invention includes a reinforcing member in a space formed by an outer box and an inner box forming the side wall of the recess, and the foamed heat insulating material is filled and foamed on the side wall of the recess.ょ

[0025] Thereby, the strength of the side wall of the recessed portion, which tends to be weak in rigidity, can be increased. Therefore, the side wall with weak rigidity vibrates due to the vibration of the compressor, and is propagated to the parts (for example, refrigerant piping, control board, etc.) provided in the recess, and noise is generated due to the vibration of the parts. Can be suppressed.

[0026] The refrigerator of the present invention includes a cover member that covers the recess, and the cover member is a side wall of the recess. It may be fixed to the reinforcing member provided in the.

[0027] Thereby, the strength of the cover member can be increased. Therefore, it is possible to suppress the generation of noise due to the vibration of the compressor and the cover member.

[0028] The refrigerator of the present invention may include a vacuum heat insulating material on at least a part of the heat insulating wall located between the uppermost storage chamber and the compressor.

[0029] This enhances the attenuation effect on noise transmission of the foamed heat insulating material positioned between the compressor and the interior of the refrigerator. In addition, the use of a vacuum heat insulating material having a different structure or a different structure as the core material has a multi-layer structure, which further enhances the attenuation effect on noise transmission. In addition, noise in a wider frequency range can be attenuated than when sound insulation is performed with a single material. Therefore, it is possible to reduce the leakage of noise transmitted to the inside of the cabinet and reduce the noise of the refrigerator.

[0030] Further, a foam heat insulating material and a vacuum heat insulating material having a different heat structure and a high heat insulating property as the core material may be formed in a multilayer structure between the compressor and the interior at high temperatures. As a result, the compressor power can greatly reduce the amount of heat entering the uppermost storage chamber. Therefore, the power consumption of the refrigerator can be reduced.

[0031] In the refrigerator of the present invention, the door of the uppermost storage chamber may be a rotary door, and the holding portion of the rotary door may be attached to an integrally formed heat insulating wall.

[0032] As a result, the portion that holds the door is integrated with the heat insulating box, so that the load applied to the refrigerator, such as the weight of food stored in the door, is supported by the entire heat insulating box. be able to . Further, in the refrigerator in which the rigidity of the heat insulating box near the holding portion of the rotating door tends to be weakened by the rotary door, the rigidity of the refrigerator body can be increased. Furthermore, it is possible to prevent the rotary door of the refrigerator compartment from being lowered due to the deformation of the heat insulating box.

[0033] The refrigerator according to the present invention has a heat-insulating box body having three or more heat-insulated compartments in the vertical and horizontal directions, and partitions the compartment having the widest opening area other than the uppermost compartment. And a heat insulation box and a foam heat insulator filled and foamed.

[0034] This makes it possible to increase the rigidity of the storage chamber having a large opening area, which tends to be weak because the opening area is large. As a result, the rigidity of the entire heat insulating box of the refrigerator can be increased. Because the compressor is placed on the top surface, the refrigerator tends to have large vibrations. However, the vibration generated from the compressor can be prevented from propagating to the refrigerator main body.

[0035] The refrigerator of the present invention has a heat-insulated box body having three or more heat-insulated compartments in the vertical and horizontal directions, on the back wall of the storage room having the widest front opening area other than the uppermost storage room. A cooler may be provided, and the back wall of the storage room provided with the cooler may be filled with foamed heat insulating material.

[0036] This makes it possible to increase the rigidity of the storage chamber having a large opening area, which tends to be weak because the opening area is large. As a result, the rigidity of the entire heat insulating box of the refrigerator can be increased. Even in a refrigerator where the vibration tends to increase because the compressor is arranged on the top surface, the vibration generated from the compressor can be prevented from propagating to the refrigerator body.

[0037] The refrigerator of the present invention may have a through hole formed in a part of a heat insulating wall filled with a foam heat insulating material. This makes it possible to add functions other than heat insulation, such as configuring an air path and a water supply path to the ice making device, to the partition.

[0038] Further, the through hole portion may be formed of a separate heat insulating member. Thereby, the freedom degree of the shape of a through-hole part can be increased. Furthermore, it is possible to simplify the structure for preventing leakage of the foam insulation near the through hole.

[0039] In the refrigerator of the present invention, the surface shape of the partition filled with the foam heat insulating material may be a planar shape. This ensures mass insertability by ensuring the insertion of a jig to prevent deformation due to foaming pressure when filling and foaming foam insulation, and enabling the jig to be inserted and removed efficiently. be able to.

[0040] In the refrigerator of the present invention, a separate heat insulating member is partially disposed inside the partition where there is some restriction on the surface shape of the partition filled with the foam heat insulating material and the flat shape cannot be obtained. May be. Thereby, the deformation | transformation by the foaming pressure of a foam heat insulating material can be avoided. In addition, it is possible to partially eliminate the insertion of a jig for preventing deformation due to foaming pressure.

Hereinafter, embodiments of the refrigerator according to the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments. [0042] (Embodiment 1)

FIG. 1 is a schematic cross-sectional view of the refrigerator in the first embodiment of the present invention. In FIG. 1, the heat insulation box 101 of the refrigerator main body 100 is divided into three heat insulation compartments. The uppermost storage room is the refrigeration room 110, the middle storage room is the vegetable room 111, and the lowermost storage room is the freezer room 112. Each heat insulation section is provided with a heat insulation door. From the top, the refrigerator door 110a is a rotary door, the vegetable door 11 la is a drawer door, and the freezer door 112a. A plurality of door pockets 110 b are provided as storage spaces inside the refrigerator compartment door 110 a provided in the refrigerator compartment 110. A plurality of food storage shelves 110c are provided in the cabinet.

[0043] The compressor 120, which is a device constituting the refrigeration cycle, is mounted on a grommet 120a made of an elastic member on the top surface of the heat insulating box 101. In addition, a heat insulating wall between the refrigerator compartments 110 is provided with a vacuum heat insulating material 140 in addition to the foam heat insulating material 132. The compressor 120 is a reciprocating compressor with an internal low pressure that facilitates low noise and low vibration. As the refrigerant in the refrigeration cycle, isobutane, which has a low global warming potential and is a flammable refrigerant, is used from the viewpoint of global environmental conservation.

[0044] Further, the heat insulating box 101 is filled with a foam heat insulating material 132 in a space composed of an outer box 130 and an inner box 131 formed so as to surround the top surface portion, the side surface portion, the back surface portion, and the bottom surface portion of the refrigerator. The heat insulating box 101 is used. When the insulation box body 101 is filled with the foam insulation material 132, all the insulation walls formed so as to surround the refrigerator compartment 110 by simultaneously filling the partition wall 133 that insulates the refrigerator compartment with the foam insulation material 132. The surface (excluding the door) is integrally molded with foam insulation 132.

In this case, specifically, five surfaces excluding the doors around the refrigerator compartment 110, that is, the top surface, both side surfaces, the back surface, and the bottom surface formed by the partition 133 are rigid foamed urethane. The foamed heat insulating material 132 such as the above is integrally foam-molded at the same time.

[0046] The operation and action of the refrigerator configured as described above will be described below.

[0047] The high-temperature and high-pressure refrigerant discharged by the compression operation of the compressor 120 exchanges heat with a condenser (not shown) to dissipate heat, and condensates to reach a decompressor (not shown). . After that, the pressure is reduced by the pressure reducer, reaches an evaporator (not shown), and is sucked into the compressor again. [0048] At this time, when the compressor 120 performs a compression operation, a large vibration is generated, and the vibration from the compressor 120 becomes a vibration generation source of the refrigerator. However, since all the surfaces of the heat insulating wall formed surrounding the refrigerator compartment 110 where the compressor is arranged on the top surface are integrally formed with the foam insulation 132, the housing of the casing forming the compartment of the refrigerator compartment 110 is formed. The rigidity is getting stronger. Therefore, the vibration generated from the compressor 120 can be suppressed from propagating to the refrigerator main body. In addition, it is possible to suppress the generation of noise due to the vibration generated by the compressor force propagating to other parts (for example, the food storage rack 110c in the refrigerator) and vibrating the parts.

[0049] In addition, the heat insulating wall forming the refrigerator compartment 110 in which the compressor 120 is arranged on the top surface has an integral structure, and further, the heat insulating wall between the compressor and the refrigerator compartment closest to the storage compartment is provided. In addition to the foam insulation 132, a vacuum insulation 140 is provided. Therefore, it is possible to prevent the heat quantity from entering the refrigerator compartment 110 from the high-temperature compressor 120, and the compressor power can also greatly reduce the heat penetration quantity to the uppermost storage room. Therefore, the power consumption of the refrigerator can be reduced. Furthermore, in addition to the attenuation effect on noise transmission of the foam insulation located between the compressor and the interior of the chamber, the vacuum insulation material with different or different structure as the core material is made into a multilayer structure, so that the noise transmission It is possible to further enhance the attenuation effect on the. Furthermore, since noise in a wider frequency range can be attenuated compared to the case of sound insulation with a single material, leakage of noise transmitted to the interior can be reduced, and noise in the refrigerator can be reduced. it can.

[0050] As the compressor, an internal low-pressure compressor is used. A mechanical unit that compresses the refrigerant is supported by an airtight container that is an outer shell of the compressor through an elastic member such as a spring. Therefore, the vibration accompanying the compression operation does not propagate directly to the sealed container. Further, since the sealed container is arranged in the heat insulating box 101 via the grommet 120a which is an elastic member, the vibration of the compressor 120 is prevented from propagating to the heat insulating box.

[0051] Thus, the refrigerator according to the first embodiment can suppress the vibration generated from the compressor 120 from propagating to the refrigerator main body, so that the compressor 120 is insulated from the heat insulating box 10 1. It is possible to provide a refrigerator that achieves low vibration and low noise in the refrigerator placed on the top of the room. [0052] (Embodiment 2)

FIG. 2 is a schematic cross-sectional view of the refrigerator in the second embodiment of the present invention. In FIG. 2, the heat insulation box 201 of the refrigerator body 200 is divided into five heat insulation sections. From the top, the refrigerating room 210, the switching room 211, the vegetable room 212, and the bottom storage room are the freezing room 213. Further, an ice making chamber (not shown) is formed adjacent to the switching chamber 211. Each insulation compartment is provided with an insulation door. A refrigerating room door 210a which is a rotary door, a switching room door 21la which is a drawer type door, a vegetable room door 212a and a freezer room door 213a. A plurality of door pockets 210b are provided as storage spaces inside the refrigerator compartment door 210a provided in the refrigerator compartment 210. A plurality of food storage shelves 210c are provided in the cabinet.

[0053] The compressor 220, which is a device constituting the refrigeration cycle, is disposed in a recess 250 formed on the back side of the top surface of the heat insulating box 201. The compressor 220 is mounted on a grommet 220a made of an elastic member on the top surface. In addition to the foam insulation 232, the insulation wall between the compressor 220 and the refrigerator compartment 210 is in addition to the foam insulation 232, and the front wall 250a and the bottom surface of the recess 250 at the position where the vacuum insulation 240 corresponds to the front and bottom sides of the compressor. Provided in 250b. The compressor 220 is an internal low-pressure and reciprocating compressor that can easily reduce noise and vibration. In addition, as a refrigerant in the refrigeration cycle, the global warming coefficient is small from the viewpoint of global environmental conservation !, and isobutane, which is a flammable refrigerant, is used.

[0054] FIG. 3 is a perspective view showing a configuration before heat insulation foaming of the recess of the refrigerator according to Embodiment 2 of the present invention. 2 and 3, the recessed portion 250 of the heat insulating box 201 has side walls 260 on the left and right. The recess 250 is formed in accordance with the shape of the outer plate 230a that forms the outer frame of the top surface, the side surface, and the bottom, the outer plate 230b that forms the outer frame of the rear surface, and the recess 250. The outer frame of the heat insulation box 201 is formed by the outer box 230 constituted by the outer plate 230c having strong rigidity.

[0055] Since the compressor 220 is disposed on the outer plate 230c forming the outer frame of the recess, the compressor 220 is designed to be more rigid than the other outer frame portions of the heat insulating box. .

[0056] FIG. 4 is a perspective view showing a configuration after heat insulation foaming of the refrigerator according to Embodiment 2 of the present invention. In FIGS. 3 and 4, the recess 250 is the cover member 2 after the compressor is stored. Covered by 33. The cover member 233 is provided with a ventilation hole 234 that promotes the flow of air in the recess. Further, a reinforcing member 235 is embedded in the side wall 260 of the recess 250 in order to increase the strength of the side wall and prevent deformation during filling with the foamed heat insulating material. The reinforcing member 235 is made of a V-shaped iron material in which the force near the upper back side corner portion 260a of the side wall 260 extends forward and downward. The reinforcing member 235 is embedded so that the front end 235a extends forward from the front wall surface 250a of the recess 250 and the lower end 235b extends below the bottom 250b of the recess 250.

[0057] Further, the cover member 233 of the recess 250 and the handle 236 for carrying the refrigerator are fixed to the reinforcing member 235 embedded in the side wall 260 with screws or the like! RU

[0058] Both ends of the handle 236 for carrying the refrigerator are fixed to both side walls of the recessed portion 250. The handle 236 is a handle bar provided in the machine room in the left-right direction, and has a reinforcing function for reinforcing the strength in the left-right direction on the back side of the recess 250.

As described above, since the heat insulating box 201 is provided with the recessed portion 250, a stepped portion 251 is formed in the interior space of the refrigerator compartment 210.

[0060] Further, in the heat insulating box 201, a foamed heat insulating material 232 is filled in a space formed by the outer box 230 and the inner box 231 formed so as to surround the top surface portion, the side surface portion, the back surface portion, and the bottom surface portion of the refrigerator. It is made. When the heat insulating box 201 is filled with the foam heat insulating material 232, the partition 237 that insulates the refrigerating room and the partition 238 that insulates the freezing room 2 13 having a large front opening area after the refrigerating room 210 and the heat insulating box 238 By simultaneously filling 201 with the foam heat insulating material 232, the heat insulating walls forming the refrigerator compartment 210 and the freezer compartment have an integral structure. The refrigerator compartment has a stepped portion 251 and thus has a complicated shape. However, all of the heat insulating walls forming the refrigerator compartment including the stepped portion 251 are integrally formed.

[0061] When the foam heat insulating material 232 is filled in this way, the outer plate 230a that forms the outer frame of the top surface portion, the side surface portion, and the bottom surface portion and the outer plate that forms the outer frame of the back surface portion are formed in the recess 250. After assembling the outer box 230b formed by 230b and the outer plate 230c having strong rigidity formed according to the shape of the recess 250, the inner box between the bottom surface of the recess 250 and the inner box 231 Embed a vacuum insulation 240 on the side. Then, after mounting the reinforcing member 235 on the outer box side of the side wall 260 of the recess, the periphery of the recess 250 is increased by filling with the foam heat insulating material 232. It is formed with high strength.

The operation and action of the refrigerator configured as described above will be described below.

[0063] The high-temperature and high-pressure refrigerant discharged by the compression operation of the compressor 220 exchanges heat with a condenser (not shown) to dissipate heat, and condensates to reach a decompressor (not shown). . After that, the pressure is reduced by the pressure reducer, reaches an evaporator (not shown), and is sucked into the compressor again.

[0064] At this time, when a compression operation is performed by the compressor 220, a large vibration is generated, and the vibration from the compressor 220 becomes a vibration generation source of the refrigerator. However, since the heat insulating wall that forms the refrigerator compartment 210 with the compressor placed on the top surface has an integral structure, the rigidity of the heat insulating wall that forms the refrigerator compartment 210 even if the refrigerator compartment 210 has a complicated shape. Is getting stronger. Therefore, the vibration generated from the compressor 220 can be suppressed from propagating to the refrigerator main body. In addition, it is possible to suppress the vibration generated from the compressor 220 from propagating to other parts (for example, the food storage rack 210c in the refrigerator) and generating noise due to the vibration of the parts.

[0065] Further, since the heat insulating wall forming the freezing chamber 213, which tends to be weak because the opening area is large, is also integrally formed with the heat insulating box 201, the rigidity of the freezing chamber 213 having a large opening area is increased. can do. As a result, the rigidity of the entire heat insulating box of the refrigerator can be increased. Therefore, even in a refrigerator in which vibration tends to increase because the compressor is arranged on the top surface, it is possible to suppress the vibration generated from the compressor from propagating to the refrigerator body.

[0066] Further, in the second embodiment, various devices are devised in the refrigerator compartment 210 in order to increase the rigidity around the recess 250 where the vibration of the compressor is directly transmitted.

[0067] First, when the heat insulating wall forming the refrigerator compartment 210 is made into an integral structure, the outer plate 230c formed according to the shape of the concave portion 250 is provided on the heat insulating wall forming the concave portion 250 as a separate part. It is designed to have strong rigidity. Then, after these are provided, the foamed heat insulating material 253 is filled to form a single piece. Furthermore, a vacuum heat insulating material 240 is attached to the recess 250 which is a heat insulating wall between the compressor 220 and the refrigerator compartment 210 in addition to the foam heat insulating material 232.

[0068] Since the vacuum heat insulating material 240 has higher rigidity than the foam heat insulating material 232, it has an effect as a reinforcing member of the recessed portion 250. Vacuum insulation 240 is more effective than foam insulation 232 Because the fruit is about 2 to 3 times higher, it can prevent heat from entering from the high-temperature compressor 220 into the refrigerating room 210, and the compressor power can also significantly reduce the heat intrusion into the uppermost storage room. it can. Therefore, the power consumption of the refrigerator can be reduced.

[0069] Further, in addition to the damping effect on the noise transmission of the foam heat insulating material located between the compressor 220 and the refrigerator compartment 210, a vacuum heat insulating material of different types or different structures is used as a core material. By doing so, the attenuation effect on noise transmission is further enhanced. In addition, the noise in the refrigerator can be reduced by attenuating the noise in a wider frequency range and reducing the leakage of the noise transmitted to the interior as compared with the case of sound insulation with a single material.

[0070] Furthermore, since the reinforcing member 235 is provided on the side wall of the recessed portion 250, the strength of the side wall of the recessed portion, which tends to be less rigid, can be increased. Therefore, the weakly synthesized side wall vibrates due to the vibration of the compressor and propagates to the components (for example, refrigerant pipes, control bases, etc.) provided in the recess, and noise is generated due to the vibration of the components. You can suppress it.

In addition, the reinforcing member 235 is disposed in a V shape in the depth and depth directions of the recessed portion 250. Since the side wall 260 can be supported as a part of a continuous heat insulation box supported by the front wall 250a and the bottom surface 25 Ob of the recess 250 that is a heat insulating wall orthogonal to the side wall 260, the opening of the recess 250 The strength of the part increases.

The handle 236 is attached to the opening of the recess 250 through the reinforcing member 235 so as to cross the left and right of the recess 250. Therefore, it is possible to greatly improve the strength around the recess of the heat insulating box whose strength is weakened by the space of the recess 250. Since the side wall 260 of the recess 250 can be configured as a continuous rigid body, the strength of the refrigerator compartment 210 can be further increased.

[0073] The cover member 233 that covers the recess is fixed to the reinforcing member 235 on the side wall 260 of the recess 250. Therefore, the strength of the cover member can be increased, and generation of noise due to the vibration of the cover member due to the vibration of the compressor can be suppressed.

[0074] Further, since the cover member 233 is provided with the ventilation hole 234 for promoting the flow of air in the recess 250, the air in the recess can be circulated effectively. Thereby, the temperature rise of a compressor can be suppressed and the power consumption of a refrigerator can be reduced. The

[0075] The compressor 220 is disposed in the recess 250 at the back of the top surface of the heat insulating box 201. Since the compressor 220 is surrounded by a heat insulating wall on both the front side and the side wall, noise generated from the compressor 220 can be prevented from leaking to the front side of the refrigerator.

[0076] The compressor 220 uses an internal low-pressure compressor. Since the mechanical part that compresses the refrigerant is supported by an elastic member such as a spring with respect to the sealed container that is the outer shell of the compressor, vibrations caused by the compression operation do not directly propagate to the sealed container. Further, the sealed container is disposed in the heat insulating box 201 via a grommet 220a made of an elastic member. Therefore, the vibration of the compressor 220 is prevented from propagating to the heat insulating box.

As described above, the refrigerator according to the second embodiment can suppress the vibration generated from the compressor 220 from propagating to the refrigerator main body. It is possible to provide a refrigerator that realizes low vibration and low noise in the refrigerator placed on the surface.

[0078] Note that, in Embodiment 2 according to the refrigerator of the present invention, the vacuum heat insulating material 240 is provided on the front wall surface 250a and the bottom surface 250b of the recessed portion 250 at positions corresponding to the front side and the bottom side of the compressor. However, due to refrigerator design and cost, noise suppression can be achieved even if only one of them is provided.

[0079] In the second embodiment, the reinforcing member 235 of the side wall 260 can be attached from the space of the V-shaped force dent 250 to the front wall 250a and the bottom 250b. Other shapes can be used as long as they are!

[0080] (Embodiment 3)

FIG. 5 is a front view of the refrigerator according to Embodiment 3 of the present invention. FIG. 6 is a front view of the cabinet with the refrigerator door opened in the third embodiment of the present invention. FIG. 7 is a view showing a cross section taken along line 7-7 of FIG.

The refrigerator cabinet 317 is partitioned by partitions 318, 319, 320, and 321. It consists of refrigeration room 322, switching room 323, ice making room 324, vegetable room 325, and freezer room 326. Refrigerating room door 322a is a rotary door, and switching room door 323a, ice making room door 324a, vegetable room door 325a, and freezer room door 326a are drawer type doors. Refrigerator door 322a is the top surface of cabinet 317 It is held by the cut body 318. The cabinet 317 is formed as a heat insulating box by filling a space composed of an outer box 327 and an inner box 328 with foam heat insulating material 329. When the cabinet 317 is filled with the foam insulation 329, the partition 318 for partitioning the refrigerator compartment and the partition 3 19 located directly below the partition 318 are also filled with the foam insulation 329 at the same time. The 319 and the cabinet 317 are integrated with a foam insulation 329.

[0082] Further, the cabinet 317 is provided with a recessed portion 330 that is recessed on the rear side of the top surface portion, and the compressor 331 is disposed therein via an elastic member 332.

In addition, a cooler 333 is disposed on the inner surface of the space below the partition 319 divided by the partition 319. After disposing the cooler 333, the partition 320 is attached, and the space below the partition 319 is divided into a vegetable compartment 325 and a freezer compartment 326.

Further, an ice making device 334 exists in the ice making chamber 324. A water supply tank 335 for supplying water to the ice making device 334 exists in the refrigerator compartment 322. The water in the water supply tank 335 is supplied to the ice making device 334 in the ice making chamber 324 via the water supply path 336 penetrating the partition 318.

FIG. 8 is a perspective view showing the recess 330. In FIG. 8, the compressor 331 is surrounded by an outer box 327 and an outer plate 327c that are constituted by an outer plate 327a and an outer plate 327b. The outer plate 327 covers the notch at the rear of the top plate.

FIG. 9 is an exploded perspective view of the partition 318. FIG. 10 is a bottom view of the partition 318. As shown in FIG. 9, the partition 318 is configured by filling the space surrounded by the upper lid 337 and the lower lid 338 with the foam heat insulating material 329. However, a heat insulating member 339 is inserted in the ceiling portion of the ice making chamber 324. As shown in FIG. 10, the upper lid 337, the lower lid 338, and the heat insulating member 339 have a hole 340 for a water supply path to the ice making chamber 324. The upper and lower surfaces of the partition 318 are flat except for the portion where the heat insulating member 339 exists. The partition 318 includes a plurality of holes 338 a, 338 b, and 338 c, and is integrated with the cabinet 317 by a heat insulating member 339.

FIG. 11 is an exploded perspective view of the partition 319. FIG. 12 is a top view of the partition 319.

As shown in FIG. 11, the partition 319 is configured by filling a space surrounded by the upper lid 341 and the lower lid 342 with a foam heat insulating material 329. However, the upper lid 341 and the lower lid 342 have a hole 343 for an air passage that serves as a path for cool air from the cooler 333. The hole 343 is constituted by a separate heat insulating member 344. The upper and lower surfaces of the partition 319 except for the part where the heat insulating member It is a flat surface. Similarly to the partition 318, the partition 319 includes a plurality of holes 342a, 342b, and 342c, and is integrated with the cabinet 317 by a heat insulating member 339.

[0088] The refrigerator configured as described above is divided more powerfully than the conventional refrigerator by the partitions 318 and 319 that are integrated with the cabinet 317 via the foam heat insulating material 329. A partition 318 supporting the refrigerator compartment door 322a is integrated with the cabinet 317. Therefore, the load applied to the refrigerator, such as the weight of the food stored in the door, can be dispersed and supported with good tolerance. In addition, since the rigidity of the refrigerator compartment can be increased, the revolving door of the refrigerator compartment can be prevented from being lowered, and as a result, the refrigerator body can be strengthened.

[0089] In addition, since the partition 318 has a hole 340 for the water supply path, water can flow through the partition 318 to the ice-making room in the refrigerator compartment. Similarly, since the partition 319 also has a hole 343 for the air path, cold air circulates between the cooler 333 and the refrigerator compartment 322, the switching chamber 323, and the ice making chamber 324 via the partition 319. Furthermore, since the water supply path provided in the partition 318 includes the hose 336 and the heat insulating member 339, a water supply path bent in an L shape can be easily realized.

[0090] When the cabinet 317 and the partitions 318 and 319 are filled with the foam insulation 329, the side surfaces of the cabinet 317 and the partitions 318 and 319 are deformed by the expansion pressure of the foam insulation 329 by pressing with a jig. To prevent. At this time, since the heat insulating members 339 and 344 of the partitions 318 and 319 are inserted and the portions are flat, the side surfaces can be easily pressed by a jig. For this reason, when producing refrigerators in large quantities, the production operation rate can be increased. On the other hand, in the vicinity of the ice maker installation part of the partition 318 and the hole part 343 for the air passage of the partition 319, complex uneven shapes such as a dent recess for attaching the ice making device 334 are concentrated. Yes. Therefore, the shape and installation method of the deformation preventing jig when filling the foam heat insulating material 329 are complicated. When the deformation is prevented in this way, the shape of the part is complicated, and therefore, the deformation prevention jig cannot effectively suppress the deformation of the foam heat insulating material 329 due to the expansion pressure, making it difficult to mount the parts. Therefore, the heat insulating members 339 and 344 are inserted in the portion where the complicated uneven shape is concentrated, and the foam heat insulating material 329 is prevented from being filled while partially securing the heat insulating property. Thereby, a jig for preventing deformation can be partially eliminated, which can contribute to improvement of the productivity of the refrigerator. [0091] In addition, by disposing the cooler 333 on the inner surface of the space partitioned below the partition 319, the work for attaching the cooler 333 to the refrigerator can be performed in a wide space. As a result, workability can be improved and it can contribute to productivity improvement of a refrigerator.

Industrial applicability

[0092] As described above, the refrigerator according to the present invention has a large amount of food stored on the side surface of the door, holds a large load on the holding portion, holds the rotary door with the partition integrally formed with the cabinet, and

In addition, the cabinet body is more rigidly divided than before by a partition body integrated with a plurality of cabinets, thereby increasing the rigidity of the cabinet body. With such a configuration, vibration generated by the compressor force can be suppressed from propagating to the refrigerator main body. Therefore, it is possible to realize low vibration and low noise in the refrigerator having the compressor placed on the top surface. Useful.

Claims

The scope of the claims

[1] A heat insulating box provided with at least three or more heat insulating compartments in the vertical direction, a door provided in the front opening of the storage room,

A compressor disposed on the top surface of the heat insulation box,

The heat insulating box is formed by filling and foaming a foam heat insulating material, and the heat insulating box formed surrounding the uppermost storage chamber is integrally formed with the foam heat insulating material.

refrigerator.

[2] A dent part on the rear surface of the heat insulation box,

A step portion in which a heat insulating wall that forms the back of the top surface of the uppermost storage chamber is formed in a step shape by the recess.

The compressor is mounted in the recess,

The heat insulation box formed to surround the uppermost storage chamber including the stepped portion is integrally formed with the foam heat insulating material.

The refrigerator according to claim 1.

[3] The recessed portion has side walls on both sides, the foamed heat insulating material is filled and foamed in a heat insulating section forming the uppermost storage chamber of the heat insulating box and the side wall of the recessed portion, and the uppermost portion The heat insulation wall of the storage chamber and the side wall of the recess are integrally molded

The refrigerator according to claim 2.

[4] A reinforcing member is further provided in a space formed by an outer box and an inner box forming the side wall of the recess,

The side wall of the recess was filled and foamed with foam insulation.

The refrigerator according to claim 2.

[5] A cover member that covers the recess is further provided,

The cover member is fixed to the reinforcing member

The refrigerator according to claim 4.

[6] A vacuum heat insulating material is provided on at least a part of the heat insulating wall located between the uppermost storage chamber and the compressor.

The refrigerator according to claim 1 or 2.

[7] The uppermost storage chamber door is a revolving door,

The holding portion of the rotary door is mounted on an integrally formed heat insulating wall.

The refrigerator according to claim 1 or 2.

[8] The heat insulating box further includes three or more heat-insulated storage chambers in the vertical and horizontal directions, and the partition body that partitions the storage chamber having the widest opening area other than the uppermost storage chamber and the heat insulation The foam insulation was filled and foamed in a box.

The refrigerator according to claim 1 or 2.

[9] The heat insulation box further includes three or more heat-insulated storage chambers in the vertical and horizontal directions, and a cooler is disposed on the back wall of the storage chamber having the largest front opening area other than the uppermost storage chamber. Installed, and foam insulation was filled and foamed on the back wall of the storage room

The refrigerator according to claim 1 or 2.

[10] A part of the insulating wall filled with foam insulation was provided with a through hole

The refrigerator according to claim 1 or 2.

[11] The through-hole portion is composed of a separate heat insulating member.

The refrigerator according to claim 10.

[12] The surface shape of the partition filled with the foam heat insulating material is a planar shape.

The refrigerator according to claim 8.

[13] A separate heat insulating member is disposed inside the partition filled with the foam heat insulating material.

The refrigerator according to claim 8.