JP2007057130A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce noise of a refrigerator with a compressor arranged in a recessed part of a body upper part. <P>SOLUTION: A top part of a heat insulating box 1 is composed of a first top face part 25, and a second top face part 26 provided in a position lower than the first top face part 25 in a back face side. A back face of the heat insulating box 1 is composed of a heat insulating plate 27 being a partition between an outer wall back face 12 and a storage chamber of an uppermost part. The recessed part 10 is formed by the second top face part 26, side faces 2 of the heat insulating box 1, and the outer wall back face 12. By arranging sound absorbing material 41 by an adhesive 40 in the recessed part 10, high frequency sound generated from the compressor can be removed, and sound from a low frequency to a middle frequency generated from refrigerating cycle components such as a drier, a passage control valve, and piping can be removed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a refrigerator in which a compressor is loaded on 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. 3 shows a configuration of a conventional refrigerator described in Patent Document 1. As shown in FIG.

  As shown in FIG. 3, 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.

The evaporator 20 which is a component device 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-described conventional configuration, since the compressor is arranged on the top surface, the sound source approaches the ear, and there is a problem that a loud sound can be heard through the back space and the inside of the refrigerator compartment. In addition, the machine room has become smaller due to space saving of the machine room, and the sound insulation performance has deteriorated.

  Furthermore, a plurality of sound sources are mixed due to the arrangement of the refrigeration cycle components such as the dryer and the flow path control valve, and the sound can be heard louder.

  Furthermore, in addition to the size of the compressor and condenser, pipe vibration and assembly such as connection piping, arrangement of refrigeration cycle components such as dryers and flow control valves, and securing the straight line length of pipe welds When taking into consideration the workability and the like, a very large space is required, and soundproofing with a small volume is a problem.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a refrigerator that achieves noise reduction without changing the internal volume of the machine room and without significantly increasing the overall height of the refrigerator.

  In order to solve the above-mentioned conventional problems, in a 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 upper rear corner of the upper wall across the upper wall and the back wall of the main body is A concave portion is provided so that the rear portion of the upper wall of the uppermost storage chamber is lowered, a compressor is accommodated in the concave portion, and a sound absorbing material is provided in the concave portion.

  As a result, the high frequency sound generated from the compressor can be removed, and the mid frequency sound can be removed from the low frequency generated from the refrigeration cycle components such as the dryer, flow control valve, and piping. . Furthermore, there is a soundproofing effect with a small volume, and the size of the machine room can be reduced.

  The refrigerator of the present invention can prevent sound from low to mid-range sounds generated from dryers, flow path control valves, piping, etc., which are refrigeration cycle components, in addition to high-frequency sounds generated from a compressor. . In addition, the use of a material having high sound absorption efficiency can reduce the size of the machine room.

  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 high-frequency sound generated from the compressor is provided by providing a recess recessed so that the rear part of the upper wall of the upper storage chamber is lowered, housing the compressor in the recess, and disposing a sound absorbing material in the recess. The middle frequency sound can be removed from the low frequency generated from the dryer, the flow path control valve, the piping, and the like, which are refrigeration cycle components. In addition, there is a soundproofing effect with a small volume, and the size of the machine room can be reduced.

  According to a second aspect of the present invention, in the first aspect of the invention, the high frequency sound generated from the compressor can be removed by disposing a sound absorbing material on the bottom surface of the recess, and the refrigeration cycle configuration The mid frequency sound can be removed from the low frequency generated from the component dryer, flow control valve, piping and the like. Furthermore, there is a soundproofing effect with a small volume, and the size of the machine room can be reduced. Furthermore, it can be disposed without requiring an adhesive surface, and can be manufactured at low cost. Furthermore, the vibration of the compressor can be prevented by disposing it below the compressor.

  According to a third aspect of the present invention, in the first aspect of the invention, a high frequency sound generated from the compressor can be removed by disposing a sound absorbing material on the inner surface of the recess, and a refrigeration cycle configuration The mid frequency sound can be removed from the low frequency generated from the component dryer, flow control valve, piping and the like. Furthermore, the noise to the left and right of the refrigerator body can be reduced, and the difference due to the installation environment of the refrigerator can be eliminated.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, there is provided a top plate and a back plate that cover the concave portion, and a sound absorbing material is disposed on the top plate so that the height generated from the compressor is increased. The high frequency sound can be removed, and the mid frequency sound can be removed from the low frequency generated from the dryer, flow control valve, piping, etc., which are the components of the refrigeration cycle. Furthermore, it can be easily repaired by being separable from the refrigerator body, and welding necessary for pipe connection can be easily performed. Furthermore, the vibration of the compressor can be prevented by disposing it on the compressor.

  According to a fifth aspect of the present invention, in the first aspect of the present invention, there is provided a top plate and a back plate that cover the recess, and a sound absorbing material is disposed on the back plate, thereby generating a high pressure generated from the compressor. The high frequency sound can be removed, and the mid frequency sound can be removed from the low frequency generated from the dryer, flow control valve, piping, etc., which are the components of the refrigeration cycle. Furthermore, it can be easily repaired by being separable from the refrigerator body, and welding necessary for pipe connection can be easily performed. Furthermore, the sound absorption efficiency can be improved by installing the refrigerator body in contact with the wall.

  According to a sixth aspect of the present invention, in the first aspect of the present invention, a high frequency sound generated from a compressor is provided by disposing a sound absorbing material in a partition between the concave portion and the uppermost storage chamber. The middle frequency sound can be removed from the low frequency generated from the dryer, the flow path control valve, the piping, and the like, which are refrigeration cycle components. Furthermore, by providing a sound absorbing material in the partition with the uppermost storage chamber, the sound when the door of the uppermost storage chamber is opened can be reduced.

  The invention according to claim 7 is the invention according to any one of claims 1 to 6, wherein the sound absorbing material is made of a porous foamed resin, thereby largely removing high frequency sound (mainly 4 KHz or more). It is possible to eliminate sounds that are unpleasant for human sensitivity. Furthermore, by forming the porous foamed resin freely, the machine room can be made small regardless of the installation position in the machine room. In addition, an inexpensive and lightweight refrigerator can be made.

  The invention according to claim 8 is the invention according to any one of claims 1 to 6, wherein the sound-absorbing material is a fiber material, thereby removing low-frequency sound from high-frequency sound, Therefore, the sound can be reduced. Furthermore, by forming the fiber material freely, the machine room can be made small regardless of the installation position in the machine room.

  The invention according to claim 9 is the invention according to any one of claims 1 to 6, wherein the sound absorbing material is a rubber sheet, so that mid-frequency sound can be removed and it is most audible to human ears. Can absorb sound. Furthermore, since there is no deterioration over time, there is no need to repair parts.

  A tenth aspect of the present invention is the sound according to any one of the first to sixth aspects, wherein the sound absorbing material is made of plywood, so that the mid-frequency sound can be removed and the sound most easily heard by human ears. Can be absorbed. Furthermore, the sound insulation effect can be used to remove low-frequency sound from high-frequency sound, thereby reducing the overall sound. Furthermore, since there is no deterioration over time, there is no need to repair parts. In addition, an inexpensive refrigerator can be made.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a schematic cross-sectional view of the refrigerator in the first embodiment of the present invention, and FIG. 2 shows a schematic rear view of the refrigerator in the same embodiment.

  In FIG. 1 and FIG. 2, the heat insulation box 1 comprised by heat insulating materials, such as hard foam urethane, is divided into the several heat insulation division, for example, the refrigerator compartment 2, drawer type vegetables from the top. The chamber 4 and the freezing chamber 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 equal to or slightly higher than that of the refrigerator compartment 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. 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, a back plate 14 is detachably provided with a screw or the like on the back portion 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. The opening 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 refrigeration cycle is configured by connecting a compressor 16, a condenser 17, a decompressor such as a capillary 30, 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, and a spiral fin type. It is disposed in the space above one 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 using 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.

  By adhering the sound absorbing material 41 to the recess 10, the high frequency sound generated from the compressor can be removed, and the low frequency generated from the dryer, flow control valve, piping, etc., which are refrigeration cycle components. The mid frequency sound can be removed from the frequency. Furthermore, there is a soundproofing effect with a small volume, and the size of the machine room can be reduced.

  In addition, by adhering the sound absorbing material 41a to the second top surface portion 26, it is possible to arrange it without requiring an adhesive surface, and it can be manufactured at low cost.

  Further, the vibration of the compressor can be prevented by being disposed under the compressor.

  Moreover, the noise to the left and right of the refrigerator main body can be reduced by affixing the sound absorbing material 41b to the side surface 42 of the heat insulating box 1, and the difference due to the installation environment of the refrigerator can be eliminated.

  Moreover, the sound at the time of opening the door of the uppermost store room can be made small by affixing the sound-absorbing material 41c to the heat insulating plate 27.

  Moreover, by adhering the sound absorbing material 41d to the upper plate 13, it can be easily repaired by being separable from the refrigerator main body, and welding necessary for pipe connection can be facilitated. Furthermore, the vibration of the compressor can be prevented by disposing it on the compressor.

  Moreover, it can repair easily because it can isolate | separate from a refrigerator main body by affixing the sound-absorbing material 41e to the backplate 14, and the welding required for piping connection can be made easy. Furthermore, the vibration of the compressor can be prevented by disposing it on the compressor. Since it can be separated from the refrigerator body, it can be easily repaired, and welding necessary for pipe connection can be easily performed. Furthermore, the sound absorption efficiency can be improved by installing the refrigerator body in contact with the wall.

  Moreover, by using a porous foamed resin as the sound absorbing material, high frequency sound (mainly 4 KHz or more) can be largely removed, and sounds that are unpleasant to human sensitivity can be eliminated. Furthermore, by forming the porous foamed resin freely, the machine room can be made small regardless of the installation position in the machine room. In addition, an inexpensive and lightweight refrigerator can be made.

  Moreover, by using the sound absorbing material as a fiber material, it is possible to remove low frequency sound to high frequency sound and to reduce the sound as a whole. Furthermore, by forming the fiber material freely, the machine room can be made small regardless of the installation position in the machine room.

  Further, by using a rubber sheet as the sound absorbing material, it is possible to remove mid-frequency sounds and absorb sounds that are most easily heard by human ears. Furthermore, since there is no deterioration over time, there is no need to repair parts.

  Moreover, by using the sound absorbing material as plywood, the mid-frequency sound can be removed, and the sound that is most audible to the human ear can be absorbed. Furthermore, the sound insulation effect can be used to remove low-frequency sound from high-frequency sound, thereby reducing the overall sound. Furthermore, since there is no deterioration over time, there is no need to repair parts. In addition, an inexpensive refrigerator can be made.

  As described above, the refrigerator according to the present invention has a compressor disposed in a recess in the upper part of the main body, and a sound absorbing material is disposed in the recess to reduce noise, and is applicable to uses such as food storage. it can.

Schematic sectional view of the refrigerator in the first embodiment of the present invention. Schematic rear view of the refrigerator in the first embodiment of the present invention Schematic sectional view of a conventional refrigerator

Explanation of symbols

1 Insulated box 2 Refrigerated room (storage room)
3 Freezing room (storage room)
4 Vegetable room (storage room)
DESCRIPTION OF SYMBOLS 10 Recess 16 Compressor 41a Sound absorbing material 41b Sound absorbing material 41c Sound absorbing material 41d Sound absorbing material 41e Sound absorbing material

Claims (10)

  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 refrigerator provided with a recessed portion that is recessed so as to be lowered, wherein a compressor is accommodated in the recessed portion, and a sound absorbing material is disposed in the recessed portion.   The refrigerator according to claim 1, wherein a sound absorbing material is disposed on a bottom surface of the recess.   The refrigerator according to claim 1, wherein a sound absorbing material is disposed on the inner surface of the recess.   The refrigerator according to claim 1, further comprising a top plate and a back plate that cover the recess, and a sound absorbing material is disposed on the top plate.   The refrigerator according to claim 1, further comprising a top plate and a back plate that cover the recess, and a sound absorbing material is disposed on the back plate.   The refrigerator according to claim 1, wherein a sound absorbing material is disposed in a partition between the concave portion and the uppermost storage chamber.   The refrigerator according to any one of claims 1 to 6, wherein the sound absorbing material is a porous foamed resin.   The refrigerator according to any one of claims 1 to 6, wherein the sound absorbing material is a fiber material.   7. The refrigerator according to claim 1, wherein the sound absorbing material is a rubber sheet.   The refrigerator according to any one of claims 1 to 6, wherein the sound absorbing material is plywood.

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