JP2008106967A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To silence a refrigerator equipped with a compressor at the rear of a top face. <P>SOLUTION: A top part of a heat insulating box body 1 is formed with a recess 10 composed of a first top face part 25 and a second top face part 26 provided in a lower position than the first top face part 25 on the back face side. An open part of the recess 10 is covered with a recess cover 15 formed of an upper plate 13 and a back plate 14 almost right-angled to the upper plate 13, and provided with louvers 50a turning an open face in a back face direction and a lower direction, by guide ribs 51a, 51b formed by bending part of the upper plate 13 and back plate 14. Noise from the compressor can thereby be reduced without degrading the cooling performance of the compressor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator in which a compressor is loaded behind the top surface.

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

  Conventional refrigerators of this type are provided with a recess that is recessed so that the rear back of the uppermost storage chamber of the heat insulation box is lowered for the purpose of increasing the storage capacity of the storage chamber disposed at the bottom. A method of storing the components of the refrigeration cycle in the recess has been taken (see, for example, Patent Document 1).

  FIG. 7 shows a configuration of a conventional refrigerator described in Patent Document 1. As shown in FIG.

  As shown in FIG. 7, the heat insulating box 1 includes a refrigerator compartment 2, a freezer compartment 3, and a vegetable compartment 4 in order from the top, and a refrigerator compartment rotary door 5 is provided at the front opening of the refrigerator compartment 2. . In addition, the freezer compartment 3 and the vegetable compartment 4 located in the lower part from the center of the heat insulation box 1 are a drawer-type freezer compartment drawer door 6 and a vegetable compartment drawer door 7 that can be easily taken out in consideration of storability and usability. Is provided. A plurality of storage shelves 8 are provided inside the refrigerator compartment 2, and a storage container 9 having an open top surface is attached to the freezer compartment 3 and the vegetable compartment 4. The storage container 9 is supported by a roller (not shown) so as to be movable in the front-rear direction by a roller.

  The recessed part 10 provided in the heat insulation box 1 is a place where the top back part over the outer box upper surface 11 and the outer box back surface 12 is depressed so that the uppermost back part of the refrigerator compartment 2 is lowered. The left and right sides of the recess 10 are closed by the left and right walls of the heat insulating box 1 and open upward and to the back. The open portion of the recess 10 includes an upper plate 13 and a back plate 14 that is substantially perpendicular to the upper plate 13. The concave cover 15 is covered. The recess cover 15 is detachably fixed to the heat insulating box 1 with screws or the like.

  The compressor 16 and the condenser 17 that are components of the refrigeration cycle are disposed so as to be accommodated in the recess 10 together with the machine room fan 18, and are covered with the recess cover 15. The upper plate 13 and the back plate 14 of the recess cover 15 are provided with a plurality of ventilation holes 19 for heat dissipation.

  Moreover, the evaporator 20 which is a component of the refrigeration cycle is disposed with a cooling fan 21 at the back of the freezer compartment 2, and the vegetable compartment 4 which is the lowest storage compartment is deeply configured.

Thereby, compared with what accommodates the compressor 16 and the condenser 17 in the back lower part of the heat insulation box 1, the internal volume of the vegetable compartment 4 can be enlarged and comprised deeply.
JP 2001-99552 A

  However, in the above conventional configuration, since the compressor is arranged on the top surface, the sound source approaches the ear and the user can hear a loud sound through the holes on the top surface and the back surface for cooling the compressor. Is an issue.

  This invention solves the said conventional subject, and it aims at providing the refrigerator which aims at noise reduction in what arrange | positions a compressor to a top | upper surface.

  In order to solve the above-mentioned conventional problems, the refrigerator of the present invention is a refrigerator having a box-shaped main body in which a plurality of storage rooms each having a door on the front surface are vertically arranged. Provided with a recess in which the rear corner of the wall is recessed so that the rear upper wall of the uppermost storage chamber is lowered, and the compressor is accommodated in the recess, and the recess has an upper plate and a back plate having an opening. And a guide rib is provided in the vicinity of the opening.

  Thereby, in the case where the compressor is disposed on the top surface, the sound generated from the compressor can be released to the rear or below the refrigerator.

  The refrigerator according to the present invention is provided with a recess in which the upper wall rear corner portion across the upper wall and the back wall of the main body is recessed so that the upper wall rear portion of the uppermost storage chamber is lowered, and the compressor is provided in the recess. The recess is surrounded by an upper plate and a back plate having an opening, and a guide rib is provided in the vicinity of the opening so that the sound generated from the compressor is released to the rear or below the refrigerator. It is possible to achieve noise reduction by reducing the sound toward the front of the refrigerator.

  The invention according to claim 1 is a refrigerator having a box-shaped main body in which a plurality of storage rooms each having a door on the front face are arranged vertically, and the rear upper corner of the upper wall extending over the upper wall and the back wall of the main body is the outermost wall. A recess is provided so that the rear part of the upper wall of the upper storage chamber is lowered, the compressor is accommodated in the recess, and the recess is surrounded by an upper plate and a back plate having an opening, and the opening By providing the guide rib in the vicinity, the sound generated from the compressor can be released to the rear or the lower side of the refrigerator, and the noise to the front of the refrigerator can be reduced to reduce the noise.

  According to a second aspect of the invention, in the first aspect of the invention, the guide ribs of the back plate are directed downward, so that the sound generated from the compressor can be efficiently dispersed downward.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the guide ribs of the upper plate are directed rearward, so that the sound generated from the compressor can be efficiently dispersed rearward. .

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the guide rib of the upper plate or the back plate is formed in the recess, so that the outer dimension of the machine room is formed. The noise to the front can be reduced efficiently without increasing.

  The invention according to claim 5 can be manufactured at low cost by forming the guide rib integrally with the upper plate or the back plate in the invention according to any one of claims 1 to 4.

(Embodiment 1)
1 shows a schematic cross-sectional view of the refrigerator in Embodiment 1 of the present invention, FIG. 2 shows a schematic rear view, FIG. 3 shows a schematic cross-sectional view of a machine room, FIG. 4 shows the flow of sound in the machine room.

  In FIGS. 1, 2, and 3, the heat insulating box 1 configured to be insulated from the surroundings with a heat insulating material such as hard foamed urethane is divided into a plurality of heat insulating sections, and the refrigerator compartment 2 and the drawer are drawn from above. The type vegetable room 4 and freezer room 3 are configured. Each heat insulation section is provided with a heat insulation door via a gasket 22. The refrigerator door 5, the vegetable compartment drawer door 7, and the freezer compartment drawer door 6 from above.

  The refrigerating compartment rotary door 5 is provided with a door pocket 23 as a storage space, and a plurality of storage shelves 8 are provided in the warehouse. A storage case 24 that can be pulled out is provided at the bottom of the refrigerator compartment 2.

  The refrigerator compartment 2 is normally set at 1 to 5 ° C. with the lower limit of the temperature at which it is not frozen for refrigerated storage. Further, the storage case 24 is set at a relatively low temperature, for example, −3 to 1 ° C. for improving the freshness of meat fish and the like. The vegetable room 4 is often set to a temperature setting of 2 ° C. to 7 ° C., which is the same as or slightly higher than that of the refrigerator room 2. It is possible to maintain the freshness of leafy vegetables for a longer period as the temperature drops.

  The freezer compartment 3 is normally set at −22 to −18 ° C. for frozen storage, but may be set at a low temperature of −30 or −25 ° C., for example, to improve the frozen storage state.

  The top part of the heat insulation box 1 is composed of a first top surface part 25 and a second top surface part 26 provided at a position lower than the first top surface part 25 on the back side.

  The rear surface of the heat insulating box 1 is constituted by a heat insulating plate 27 that is a partition between the outer wall rear surface 12 and the uppermost storage chamber, and the second top surface portion 26, the side wall 42 of the heat insulating box 1, and the outer wall rear surface 12. Thus, a recess 10 is formed.

  A sound absorbing material 41 a is disposed on the second top surface portion 26 that is the recess 10.

  In addition, a sound absorbing material 41 b is disposed with an adhesive 40 on the side surface 42 of the heat insulating box 1 that is the recess 10.

  In addition, a sound absorbing material 41 c is disposed by an adhesive 40 on the heat insulating plate 27 that is the recess 10.

  The open portion of the recess 10 is covered with a recess cover 15 including an upper plate 13 and a back plate 14 substantially perpendicular to the upper plate 13. The concave cover 15 may be formed by bending a single plate to have a right angle. The top surface portion is the upper plate 13 and the back surface portion is the back plate 14.

  Further, an upper plate 13 is detachably provided with screws or the like above the first and second top surface portions 25 and 26, and a sound absorbing material 41 d is disposed with an adhesive 40. Further, the upper plate 13 is formed with a guide rib 51a formed by bending a part of the upper plate 13 so as to protrude toward the outer side. 50a is opened. Further, the air hole 50a may be covered with a sound absorbing material 41d. Further, the air hole 50a serves as both a suction port and a discharge port for cooling air.

  A back plate 14 is detachably provided with a screw or the like on the back surface of the recess 10, which is an upper portion of the outer wall back surface 12, and a sound absorbing material 41 e is disposed by an adhesive 40. Further, the back plate 14 is bent by a guide rib 51b formed by bending a part of the back plate 14 so as to protrude toward the outer side, and the air holes for cooling the compressor 16 and the condenser 17 are directed downward. 50b is opened. Further, the air hole 50b may be covered with a sound absorbing material 41e. Further, the air hole 50a serves as both a suction port and a discharge port for cooling air.

  The sound absorbing materials 41a to 41e are preferably made of a porous urethane foam and a fiber material.

  The refrigeration cycle is configured by connecting a compressor 16, a condenser 17, a decompressor 30 such as a capillary, a dryer 31 for removing moisture, and an evaporator 20 in an annular shape. The condenser 17 and the evaporator 20 are subjected to forced convection heat exchange between the machine room fan 18 and the cooling fan 21.

  In particular, when a plurality of evaporators are used properly according to the compartment configuration and the temperature setting configuration, flow path control means such as an electric three-way valve is used.

  Moreover, in addition to the forced convection type, the condenser 17 is installed in a pipe for naturally dissipating heat using the surrounding steel plate of the heat insulation box and a partition between the heat insulation doors in each room to prevent drip-proof. You may combine piping for performing.

  The compressor 16, which is a component of the refrigeration cycle, is provided in a recess 50 provided in the space above the second top surface, and the condenser 17 has a thin configuration such as a wire type, a fin coil type, or a spiral fin type. It is disposed in the space above the first top surface portion 25.

  The machine room fan 18 is arranged side by side with the compressor 16 in the recess 10 and forcibly cools the condenser 17 and the compressor 16 by an air passage (not shown). At this time, the air path is configured so that the flow of the wind flows from the condenser 17 to the compressor 16 so that the capacity of the condenser 17 does not deteriorate due to the heat effect of the compressor 16. Further, the dryer 31 is disposed in the recess 10 and is preferably provided at a location where the temperature influence is low or a location where fresh air is introduced in consideration of generation of flash gas due to reheating.

  Moreover, the evaporator 20 which is a component apparatus of a refrigerating cycle is provided in the back part of the vegetable compartment 4 located in a middle stage with the cooling fan 18. FIG. Thereby, it is possible to maximize the internal volume and depth of the freezer compartment 3 which is the lowermost storage room.

  If the middle vegetable room 4 and the lowermost freezer room 3 have the opposite configuration, it is possible to maximize the internal volume and depth of the vegetable room.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, the operation of the refrigeration cycle will be described. The refrigeration cycle is operated by a signal from the control board 28 according to the set temperature in the refrigerator, and the cooling operation is performed. First, the high-temperature and high-pressure refrigerant discharged by the operation of the compressor 16 releases heat in the condenser 17 to be condensed and liquefied, and reaches the capillary 30. Thereafter, the capillary 30 is depressurized while exchanging heat with the suction line 35, becomes a low-temperature and low-pressure liquid refrigerant, and reaches the evaporator 20.

  By the operation of the cooling fan 21, heat is exchanged with the air in the cabinet, and the refrigerant in the evaporator 20 is evaporated. Each room is cooled by distributing low-temperature cold air with a damper (not shown). When a plurality of evaporators are used, the refrigerant is supplied to the necessary evaporators by the flow path control means. The refrigerant exiting the evaporator 20 is sucked into the compressor 16 through the suction line 35.

  When the temperature of each chamber in the low temperature chamber is sufficiently lower than the set temperature, the operation of the compressor 16 is stopped.

  During operation of the compressor 16, noise generated from the compressor 16 is reflected by the guide ribs 51 a and 51 b as shown in FIG. 4, and the sound transmitted from the machine chamber 33 to the outside is reduced. In addition, noise that passes through the air holes 50a and 50b and leaks to the outside is also radiated to the back and lower parts by the guide ribs 51a and 51b, thereby preventing the sound from propagating to the refrigerator user in the forward direction. it can. Furthermore, since the guide ribs 51a and 51b are formed by using a part of the upper plate 13 and the back plate 14, they can be provided to the market at a low cost.

(Embodiment 2)
FIG. 1 shows a schematic sectional view of a refrigerator in Embodiment 2 of the present invention, FIG. 2 shows a schematic rear view, and FIG. 5 shows a schematic sectional view of a machine room, FIG. 6 is a diagram showing the flow of sound in the machine room. The description of FIGS. 1 and 2 is the same as that of the first embodiment, and will be omitted.

  In FIG. 5, the open part of the recessed part 10 is covered with the recessed part cover 15 which consists of the upper board 13 and the back board 14 substantially orthogonal to this. Further, an upper plate 13 is detachably provided with screws or the like above the first and second top surface portions 25 and 26, and a sound absorbing material 41 d is disposed with an adhesive 40. Further, the upper plate 13 has a compressor cooling air hole 50c having an opening surface directed toward the back side by a guide rib 51c formed by bending a part of the upper plate 13 so as to protrude toward the concave side. Yes. Further, the air hole 50c may be covered with a sound absorbing material 41d.

  A back plate 14 is detachably provided with a screw or the like on the back surface of the recess 10, which is an upper portion of the outer wall back surface 12, and a sound absorbing material 41 e is disposed by an adhesive 40. In addition, the back plate 14 has a compressor cooling air hole 50d opened downward with a guide rib 51d formed by bending a part of the back plate 14 so as to protrude toward the recess. Yes. Further, the air hole 50d may be covered with a sound absorbing material 41e.

  During operation of the compressor 16, as shown in FIG. 6, noise generated from the compressor 16 is reflected by the guide ribs 51 c and 51 d, and sound transmitted from the machine chamber 33 to the outside is reduced. In addition, noise that passes through the air holes 50c and 50d and leaks to the outside is also radiated to the back and lower parts by the guide ribs 51c and 51d, thereby preventing the sound from propagating to the refrigerator user in the forward direction. it can. Furthermore, since the guide ribs 51c and 51d are integrally formed using a part of the upper plate 13 and the back plate 14, it can be provided to the market at a low cost.

  The refrigerator of the present invention can release the sound generated from the compressor to the rear or the lower side of the refrigerator, and can reduce the noise by reducing the sound to the front of the refrigerator. It is useful for noise reduction of cooling equipment.

Schematic sectional view of the refrigerator in the first and second embodiments of the present invention Schematic rear view of the refrigerator in Embodiments 1 and 2 of the present invention Schematic sectional view of a machine room in Embodiment 1 of the present invention Route diagram of noise in machine room in Embodiment 1 of the present invention Schematic sectional view of a machine room in Embodiment 2 of the present invention Route diagram of noise in the machine room in Embodiment 2 of the present invention Schematic sectional view of a conventional refrigerator

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat insulation box 2 Refrigerating room 10 Recess 13 Upper plate 14 Back plate 15 Recess cover 16 Compressor 25 First top surface portion 26 Second top surface portion 50a, 50b, 50c, 50d Air hole 51a, 51b, 51c, 51d Guide rib

Claims (5)

  In the refrigerator having a box-shaped main body in which a plurality of storage rooms each having a door on the front are arranged vertically, the rear upper corner of the upper wall across the upper wall and the back wall of the main body is the upper rear part of the uppermost storage chamber. A recess recessed to be lowered was provided, the compressor was accommodated in the recess, the recess was surrounded by an upper plate and a back plate having an opening, and a guide rib was provided in the vicinity of the opening. A refrigerator characterized by.   The refrigerator according to claim 1, wherein the guide ribs of the back plate are directed downward.   The refrigerator according to claim 1 or 2, wherein the guide ribs of the upper plate are directed rearward.   The refrigerator according to any one of claims 1 to 3, wherein guide ribs of the upper plate or the back plate are formed in the recess.   The refrigerator according to any one of claims 1 to 4, wherein the guide rib is formed integrally with an upper plate or a back plate.