Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
  • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
  • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
  • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
  • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
  • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D23/00—General constructional features
  • F25D23/02—Doors; Covers
  • F25D23/021—Sliding doors
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
  • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
  • F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
  • F25D2317/0682—Two or more fans
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D2500/00—Problems to be solved
  • F25D2500/02—Geometry problems

Definitions

• the present invention relates to a refrigerator that makes effective use of the storage volume of a storage room by arranging a refrigeration cycle such as a compressor or an evaporator.
• this type of refrigerator generally has a machine room formed in a rear outside region of a storage room disposed at the lowermost part, and a compressor for a refrigeration cycle is accommodated in the machine room.
• a compressor for a refrigeration cycle is accommodated in the machine room.
• the storage space of the lowermost storage chamber is invaded by the machine room and the storage volume is reduced, and the storage space has a complicated shape excluding the protruding portion of the machine room. It was not good.
• a recessed portion is provided so that the back of the uppermost part of the heat storage box storage room is lowered, and the compression of the refrigeration cycle is provided in the recessed portion.
• a refrigerator is proposed when a high-pressure component such as a machine is stored (for example, JP 2001-99552 A).
• FIG. 6 shows a longitudinal sectional view of a conventional refrigerator described in Japanese Patent Laid-Open No. 2001-99552.
• the heat insulation box 1 has a refrigerator compartment 2, a freezer compartment 3, and a vegetable compartment 4 in order of increasing force.
• a refrigerator compartment rotary door 5 is provided in the front opening of the refrigerator compartment 2.
• the freezer compartment 3 and the vegetable compartment 4 located below the central force of the heat insulation box 1 are arranged in consideration of storability and convenience. That is, a drawer-type freezer compartment drawer door 6 and a vegetable compartment drawer door 7 that can be easily removed are provided.
• a plurality of storage shelves 8 are provided in the refrigerator compartment 2, and storage containers 9 a and 9 b each having an open top surface are attached to the freezer compartment 3 and the vegetable compartment 4.
• the storage containers 9a and 9b are supported on a rail (not shown) in the front-rear direction so as to be movable in the front-rear direction by a roller.
• the recess 10 provided in the heat insulating box 1 cools the back of the top surface across the upper surface 11 of the outer box and the rear surface 12 of the outer box. It is the place where it was dented so that the back part of the uppermost part of the storage room 2 might go down.
• 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 opening of the recess 10 is composed of the upper plate 13 and a back plate substantially perpendicular to the upper plate 13. 14 is covered with a concave cover 15 consisting of 14.
• the recess cover 15 is detachably fixed to the heat insulating box 1 with screws or the like.
• a compressor 16 and a condenser 17 which are components constituting the refrigeration cycle are disposed so as to be accommodated in the recess 10 together with the machine room fan 18, and are provided on a recess cover 15 including an upper plate 13 and a back plate 14. Covered.
• the evaporator 20 which is a component device of the refrigeration cycle is disposed together with the cooling fan 21 at the back of the freezer compartment 3 which is the middle stage of the heat insulation box 1.
• the vegetable room 4 which is the lowest storage room is deeply constructed.
• the compressor 16 is disposed on the top surface of the heat insulating box 1, thereby increasing the internal volume and depth of the vegetable compartment 4, which is the lowest storage room, and improving the storage capacity. I can do it.
• the evaporator 20 and the cooling fan 21 are arranged at the back of the freezing chamber 3, the depth of the freezing chamber 3 formed in front of the cooling chamber is reduced, and the vegetable adjacent to the lower portion is reduced. The depth of room 4 will be considerably different.
• the depths of the storage container 9a in the freezer compartment, which is a drawer-type storage room, and the storage container 9b in the vegetable compartment are also considerably different. Pulling out the freezer compartment drawer door 6 and the vegetable compartment drawer door 7 and pulling out the storage containers 9a, 9b to the maximum extent makes the drawers quite different, giving the user a sense of incongruity and impairing a refreshing sense of unity .
• the freezer compartment 3 has a small depth, it gives a narrow impression that it is less convenient than the vegetable compartment 4.
• the number of working couples and households is increasing, so the need for freezing rooms is increasing today. It is important to enhance the storage capacity and storage capacity of freezing rooms.
• the depth of the drawer-type freezer compartment 3 and the depth of the vegetable compartment 4 are considerably different, the length of the rails and the storage containers 9a, 9b to enable the storage containers 9a, 9b to be moved back and forth.
• the length of the frame that slides on the rail surface depends on the roller. For this reason, there is a problem that the parts cost is relatively high and these parts cannot be shared. In particular, in order to improve operability, smooth, elaborate, high-quality products will become available, and if they cannot be shared, the burden on manufacturing costs will not be reduced.
• refrigeration cycle parts with heat dissipation such as the compressor 16 and the condenser 17 are not arranged in the lower region, these refrigeration cycle parts are used as a mechanism for evaporating the defrost water from the evaporator 20.
• a forced draft fan or the like needs to be newly installed as an evaporation promoting means instead.
• the present invention solves the above-described conventional problems, and improves the usability of the lowermost storage chamber and at least the immediate upper storage chamber in a refrigerator having a plurality of storage chambers. .
• the aim is to provide a refrigerator that reduces the manufacturing costs of related components. Target.
• the refrigerator of the present invention includes a compressor in a refrigeration cycle having a first storage chamber at the bottom and a second storage chamber partitioned by a heat insulating partition wall at the top. Arrange in areas other than the rear. A cooling chamber partitioned by a partition wall in the vertical direction is provided across the back of the first storage chamber and the back of the second storage chamber, and the evaporator of the refrigeration cycle is installed in the vertical direction inside this cooling chamber. It is what was contained.
• a drawer-type first storage chamber is disposed at least at the lowermost portion, and a drawer-type second storage chamber partitioned by a heat insulating partition wall is disposed on the first storage chamber.
• This is a refrigerator in which a compressor of a refrigeration cycle is disposed in a region other than the rear of the pull-out first storage chamber and the pull-out second storage chamber.
• a cooling chamber partitioned by a partition wall in the vertical direction is provided across the back surface of the pull-out type first storage chamber and the back surface of the pull-out type second storage chamber, and the evaporator of the refrigeration cycle is provided inside the cooling chamber. Is accommodated in the vertical direction.
• the two storage chambers are storage chambers equipped with drawer-type storage containers
• the depths of the storage chambers are made approximately the same.
• the storage container drawer allowance can be made almost the same and the usability can be increased, and the manufacturing cost of parts related to the drawer structure can be reduced.
• the refrigerator of the present invention can expand the depth of the lowermost storage chamber and at least the storage chamber immediately above it, and the space shape of the storage chamber does not become complicated, increasing the storage capacity. On the other hand, it is possible to improve usability and ease of use by improving storage.
• the refrigerator of the present invention can expand the bow I protruding margin of the storage container of the lowermost drawer-type storage chamber and at least the drawer-type storage chamber immediately above it almost equally. Usability can be improved while improving storage. In addition, since the depth dimensions are almost the same, parts related to the drawer structure can be shared, reducing manufacturing costs. Can be reduced.
• FIG. 1 is a longitudinal sectional view of a refrigerator according to a first embodiment of the present invention.
• FIG. 2 is a longitudinal sectional view of a refrigerator according to a second embodiment of the present invention.
• FIG. 3 is a longitudinal sectional view of a refrigerator according to a third embodiment of the present invention.
• FIG. 4 is a longitudinal sectional view of a refrigerator according to a fourth embodiment of the present invention.
• FIG. 5 is a longitudinal sectional view of a refrigerator according to a fourth embodiment of the present invention.
• FIG. 6 is a longitudinal sectional view of a conventional refrigerator.
• FIG. 1 shows a longitudinal sectional view of the refrigerator according to the first embodiment of the present invention.
• a heat insulating box 101 constituted by heat insulation with a heat insulating material such as hard foamed urethane is divided into a plurality of sections.
• Both the freezing room 103 and the vegetable room 104 have the form of a pull-out storage room.
• the front opening of each storage room is provided with a refrigerating room rotary door 105, a freezing room drawer door 106, and a vegetable room drawer door 107, which are heat insulating doors.
• the refrigerator compartment 102 is normally set at 1 ° C to 5 ° C as the lower limit of the temperature at which it does not freeze for refrigerated storage.
• the vegetable compartment 104 is often set to 2 ° C. to 7 ° C., which is equal to or slightly higher than the refrigerator compartment 102. The lower the temperature, the longer the freshness of the leafy vegetables can be maintained.
• the freezer compartment 103 is set in a freezing temperature zone, and is usually set at 22 ° C to 18 ° C for frozen storage. In order to improve the frozen storage state, it may be set at a low temperature such as ⁇ 30 ° C. or ⁇ 25 ° C., for example.
• the top surface portion of the heat insulation box 101 is formed of a first top surface portion 108 and a second top surface portion 109, which are provided with a step-like depression directed toward the back of the refrigerator.
• This staircase-shaped concave portion 110 and the compressor 111, and components on the high-pressure side of the refrigeration cycle such as a dryer (not shown) for removing moisture are housed.
• a cooling chamber 112 is provided across the back of both the freezing chamber 103 and the vegetable chamber 104.
• the cooling chamber 112 is a first partition 113 having heat insulating properties as a partition wall, and the freezing chamber 103 and the vegetable chamber 104. Power is partitioned.
• the freezer compartment 103 and the vegetable compartment 104 are partitioned by a second partition 114 having heat insulating properties as a heat insulating partition wall. Since the first partition 113 and the second partition 114 are parts that are assembled after the foaming of the heat insulating box 101, foamed polystyrene is usually used as a heat insulating material. In order to improve heat insulation performance and rigidity, it is possible to use rigid foamed urethane or insert a highly heat insulating vacuum heat insulating material to make the partition structure thinner.
• the refrigerator compartment 102 and the vegetable compartment 104 are partitioned by a third partition 115.
• the third partition 115 is used when necessary, for example, when the upper part of the vegetable compartment 104 is not directly adjacent to the refrigerator compartment 102 but adjacent to a temperature zone room lower than the refrigerator temperature such as a low temperature room or an ice making room. Is a heat insulating partition made of heat insulating material.
• the freezer compartment 103 and the vegetable compartment 104 each have a freezer compartment storage container 116 and a second drawer-type storage compartment storage container each having an upper surface opened as a storage container for the first pullout storage compartment for storing food.
• a vegetable compartment storage container 117 having an open top surface is provided.
• Each of the storage containers 116 and 117 is supported by a front-rear rail (not shown) and a frame with a roller on which the storage containers 116 and 117 are mounted so as to be movable in the front-rear direction.
• a fin-and-tube evaporator 118 includes a freezing chamber 103 and a vegetable chamber 104 including the rear region of the second partition 114, which is a heat insulation partition wall. It is arranged vertically in the vertical direction. The arrangement ratio of the freezer compartment 103 is larger than the arrangement ratio of the vegetable compartment 104 area.
• a cooling fan 119 for blowing cool air cooled by the evaporator 118 is disposed in the refrigerator compartment 102, the freezer compartment 103, and the vegetable compartment 104 by a forced convection method.
• a radiant heater 120 made of glass tube is provided as a defrosting device for defrosting the frost adhering to the evaporator 118 and the cooling fan 119 during cooling.
• the defrosting water receiving tray 121 for receiving water defrosted by the radiant heater 120 and the drain pipe 122 for leading the defrosting water connected to the defrosting water receiving tray 121 to the outside of the cabinet are configured.
• the defrost water drainage mechanism 123 is installed so that it is almost within the projection plane above the cooling chamber 112. .
• the drainage pipe 122 penetrates the bottom surface of the heat insulation box 101 and is drained to the evaporating dish 124 provided at the bottom bottom of the heat insulation box 101.
• the evaporating dish 124 is shallowly formed to increase the area where the drained defrost water comes into contact with the air, and the evaporating dish 124 is condensed to promote evaporation of the drained defrost water.
• Heating devices such as pipes and heaters are arranged to work! As described above, the compressor 111 of the refrigeration cycle is present in the rear region of the freezer compartment 103.
• the cooling chamber 112 and the defrost water drainage mechanism 123 are the second heat insulating partition walls from the substantially bottom surface of the freezing chamber 103 to the height of the third partition 115 that is substantially the top surface of the vegetable chamber 104. Consideration is given to avoid increasing the thickness in the depth direction as much as possible so as to penetrate the rear region of the partition 114. Further, they are arranged in a straight line in the vertical direction with substantially the same thickness.
• the back side force on the indoor side of the freezing room drawer door 106 is also the depth in the freezing room 103 up to the first partition 113 that becomes the front wall of the cooling room 112 and the back side force on the indoor side of the vegetable room drawer door 107.
• the depth in the vegetable compartment 104 up to the first partition 113 serving as the front wall of the cooling compartment 112 is formed to be substantially the same depth.
• the equivalent depth refers to the extent that the user can visually recognize that they are substantially equivalent. It is not limited that the exact dimensions are the same.
• the depth of the freezer compartment storage container 116 drawn out by the freezer compartment drawer door 106 and the depth of the vegetable compartment storage container 117 drawn out by the vegetable compartment drawer door 107 are substantially the same size. Used.
• the shape since the protruding part corresponding to the conventional machine room does not bite behind the freezing room 103, both of them have a substantially rectangular parallelepiped shape.
• the rectangular parallelepiped shape refers to a container having no large unevenness inside the container.
• the shape is not limited to a right angle.
• the rails for moving the freezer compartment storage container 116 and the vegetable compartment storage container 117 back and forth are approximately the same length.
• a refrigeration cycle is operated by a signal from a control board (not shown) to perform a cooling operation.
• the high-temperature and high-pressure refrigerant discharged by the operation of the compressor 111 is discharged by a condenser (not shown) to be condensed and liquefied, and reaches a capillary tube (not shown).
• the pressure is reduced while exchanging heat with a suction pipe (not shown) to the compressor 111, and the refrigerant becomes a low-temperature and low-pressure liquid refrigerant and reaches the evaporator 118.
• the cooling fan 119 By the operation of the cooling fan 119, heat is exchanged with the air in each storage chamber, the refrigerant in the evaporator 118 evaporates, and supply of low-temperature cold air is controlled by a damper device (not shown) or the like. Provide the desired cooling of the chamber. The refrigerant exiting the evaporator 118 is sucked into the compressor 111 through the suction pipe.
• the compressor 111 is arranged on the top surface of the heat insulating box 101 and is not installed in the rear region of the freezing room 103, and the cooling room 112 is arranged on the back of the freezing room 103 and the vegetable room 104, and the evaporator 118 And a cooling fan 119 are provided within the height range of the freezer compartment 103 and the vegetable compartment 104. Extend the evaporator 118 in the height direction to shorten the depth dimension. This makes it possible to reduce the ineffective space without reducing the thickness of the cooling chamber 112 and contributing to the internal volume.
• the storage compartment 116 for the freezer compartment and the storage compartment 117 for the vegetable compartment By making the depth dimensions of the storage compartment 116 for the freezer compartment and the storage compartment 117 for the vegetable compartment substantially the same, the storage compartment 116 for the freezer compartment and the storage compartment 117 for the vegetable compartment without reducing the internal volume of one storage compartment. It is possible to expand the depth dimension of both. It is possible to increase the storage capacity and improve usability.
• the depth of the lowermost freezer compartment 103 can be increased in the same manner as the vegetable compartment 104.
• the indoor space shape is not complicated, and a large storage item can be rationally stored, thereby improving the storage property. Long term Increasing the frequency of use of frozen foods due to an increase in short-term frozen stored flow foods such as bento and side dishes as well as frozen stored foods! It is possible to provide a highly convenient refrigerator that can sufficiently handle the
• the drawer allowance for the freezer compartment storage container 116 and the vegetable compartment storage container 117 can be increased by selecting the rail. .
• the user can efficiently take in and out the goods while looking over the storage container, and can manage hygienically with less forgetting to use.
• select a rail use a high-quality bearing rail with high slidability, or a rail that has an intermediate rail and can increase the bow allowance to the outside of the cabinet. You can enjoy even more.
• the lengths of the rails for moving the freezer compartment storage container 116 and the vegetable compartment storage container 117 in the front-rear direction are substantially equal, the entire rail and some of the components are shared. Since it can be used, the manufacturing cost can be reduced. In particular, high-quality, high-functional rails such as those described above are expensive in parts cost, and the cost reduction effect that can be used in common can also lead to a reduction in cost burden in the manufacturing process and parts management.
• a cooling fan 119 for supplying cool air to each storage room, and the cold air heat-exchanged from each storage room are the evaporator 118.
• a cooling air return path (not shown) that returns to step 1, assembly is facilitated and the number of assembly steps can be reduced.
• the defrost water tray 121 that receives defrost water generated during defrosting in the back of the same plane as the bottom surface of the freezer compartment 3, the defrost water tray 121 is placed below the heat insulation box 101.
• the length of the drain pipe 122 for draining the defrosted water to the evaporating dish 124 provided can be shortened. Due to the short length of the drainage pipe 122, even if the drainage pipe 122 is cooled during the internal cooling operation, the temperature rises due to the radiant heat of the radiant heater 120, which is a defrosting device, during defrosting, so there is no anti-freezing heater. Even in this case, the water in the drain pipe 122 can be prevented from freezing.
• the cooling fan 119, the evaporator 118, the radiant heater 120, the defrost water receiving tray 121, and the drain pipe 122 arranged in the vertical direction in the cooling chamber 112 are arranged substantially in a straight line in the vertical direction of the cooling chamber 112. Therefore, the depth of the freezer compartment 103 and the vegetable compartment 104 can be increased almost equally while suppressing the thickness of the ineffective space without contributing to the indoor volume.
• the radiant heating of the radiant heater 120 is effectively used to effectively defrost frost adhered to the cooling fan 1 19, the evaporator 118, the defrost water tray 121, and the drain pipe 122. It can be compatible.
• Countermeasures against clogging with frost formation include arrangement of return air passages and fin arrangement.
• a separate auxiliary heater may be provided, or instead of the radiant heater 120, a pipe heater of a type that transfers heat by contacting the evaporator surface may be used.
• a pipe heater of a type that transfers heat by contacting the evaporator surface may be used.
• an evaporator other than the fin and tube may be used, and an evaporator that can reduce the thickness may be employed.
• the depth dimension of the cooling fan 119 may not be accompanied by this.
• the heat insulation thickness in the case of using a heat insulating material for the first partition 113 may be different between the freezer compartment 103 side and the vegetable compartment 104 side. Strictly speaking, the thickness of the cooling chamber 112 is up and down. There are some differences depending on the direction. If the depths of the freezer compartment 103 and the vegetable compartment 104 can be expanded and secured, they can be achieved.
• the arrangement ratio of the evaporator 118 arranged across the back of the freezer compartment 103 and the back of the vegetable compartment 104 is arranged so as to increase toward the freezer compartment 103.
• the influence of the supercooling to the vegetable compartment 104 side which is a refrigeration temperature zone can be reduced.
• the configuration of the heat insulating material of the first partition 113 on the vegetable compartment 104 side can be simplified.
• the difference in the vertical thickness of the first partition 113 can be absorbed as much as possible, and the influence on the depths of both the rooms can be suppressed.
• the required evaporator cooling capacity is determined mainly by the external dimensions, volume, etc. of the refrigerator.
• the external dimensions of the evaporator, the pitch of the fins where heat exchange is performed, the number of heat transfer tubes, etc., etc. The required heat exchange surface area is roughly calculated.
• the heat exchange surface area is largely determined mainly by the volume depending on the external dimensions of the evaporator.
• the refrigerator has a width of approximately 600mm to 700mm. If the external width of the refrigerator is determined, the width of the evaporator is generally determined. Therefore, the depth and height of the evaporator are determined by the ratio of the depth and height of the evaporator.
• the evaporator has a depth of about 60mm to 75mm in terms of cooling capacity and anti-frost surface.
• the height dimension is about 200 mm, for example, in an evaporator of a refrigerator that is cooled by a single evaporator.
• the depth and height dimensions of the evaporator are generally composed of a ratio of 1: 2 force 1: 3!
• the evaporator 118 according to the first embodiment is configured such that the depth dimension and the height dimension are in the ratio of 1: 4 to 1:10, and the depth dimension is reduced as compared with the conventional evaporator.
• the dimensions are enlarged.
• the evaporator depth is 40mm to 50mm, and the height is expanded compared to the conventional one.
• Embodiment 1 in order to achieve a sufficient thinning effect, if the depth dimension of the evaporator is the same as the height dimension and the depth dimension is 1, the depth dimension is approximately 0.5. Can be reached if:
• the ratio of the conventional evaporator is lower than 1: 4 because the evaporator is disposed in the freezer compartment which is the lowest storage chamber. And it is necessary to store in a narrow space in the upper and lower direction corresponding to the upper part of the machine room that houses the compressor, so it is necessary to reduce the height dimension and increase the depth dimension to secure the heat exchange surface area. This is because.
• the evaporator can be controlled while suppressing the degree of deterioration of the cooling capacity assumed in actual use.
• 118 depth dimensions can be shortened.
• Refrigerating room 103 to reduce the thickness of cooling room 112 The inside depth of the vegetable compartment 104 can be increased.
• the evaporating dish 124 by installing the evaporating dish 124 on the bottom surface of the heat insulating box 101, it is possible to form the evaporating dish 124 to be as shallow as possible up to the plane sectional dimension of the heat insulating box 101.
• the ability to evaporate the defrost water can be improved by increasing the surface area of the evaporating dish 124.
• the height of the freezer compartment 103 and the height of the vegetable compartment 104 are made substantially equal, and the height of the freezer compartment drawer door 106 and the vegetable compartment drawer door 107 are made substantially equivalent.
• the difference in temperature difference between the freezer drawer door 106 and the vegetable compartment drawer door 107 must be different from that of the hard foamed urethane, which is used as a heat insulating material.
• the vegetable room drawer door 107 wall thickness standard does not cause the surface condensation of the freezer drawer door 106, it can be used as a complete insulated door. In this case, the entire manufacturing cost including material cost, management cost and man-hour cost can be greatly reduced. Furthermore, inventory management becomes easy because the same door is used for the factory service.
• the drawer-type freezer compartment storage device 116 and the vegetable compartment storage container 117 can be shared. In general, it is a large-scale injection molding product with a large cost merit.
• the compressor 111 is housed in a recess 110 formed in the rear portion of the top surface of the heat insulating box 101, and the rear of the uppermost part of the refrigerator compartment 102 which is the uppermost storage room. It is configured to be located in The rear of the uppermost part of the refrigerator compartment 102 is an area that has become a substantially invalid space with extremely low usage frequency because it is difficult for the user to reach. Even if the compressor 111 is disposed in this region, the storage capacity is not substantially infringed, and the effect of eliminating the rear region force compressor 111 in the lowermost freezer compartment 103 can be maximized.
• the advantage is that the overall convenience of the refrigerator as a whole can be improved in a balanced manner.
• Embodiment 1 has proposed a configuration that effectively improves usability in consideration of the balance of the entire refrigerator.
• the compressor 111 if it is arranged outside the lowermost freezer compartment 103 and the rear area of the vegetable compartment 104, at least the purpose of improving the usability of the freezer compartment 103 and the vegetable compartment 104 can be almost achieved.
• the compressor 111 is placed on the top surface of the heat insulating box 101, or the heat insulating box 101 that is the lower part of the freezer compartment 103 is not limited to the first embodiment. It is also conceivable that the compressor 111 is placed with the bottom raised.
• the freezer compartment 103 is used as the first pull-out storage room, and the vegetable room 104 is used as the second pull-out storage room.
• the same effect can be obtained when the vegetable room 104 is used as the first pull-out storage room and the freezer room 103 is used as the second pull-out storage room.
• first pull-out storage chamber 103 and the second pull-out storage chamber 104 have a first partition 113, a second partition 114, and a third partition 115 each having a heat insulating property. Partition.
• a refrigerator room usually set at 1 ° C to 5 ° C, and a relatively low temperature for improving the freshness of meat fish etc. It can also be set in a low temperature room set at 1 ° C or a freezing temperature ice making room for ice making.
• a damper device (not shown) for controlling the cool air, a switching chamber that can be switched to each temperature zone including the freezing temperature can be provided.
• FIG. 2 is a longitudinal sectional view of the refrigerator according to the second embodiment of the present invention. Note that the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
• a first cooling chamber 203 is partitioned in the vertical direction in the back region of the freezer chamber 201 and the vegetable chamber 202.
• a first evaporator 204 and a first cooling fan 205 are provided in the first cooling chamber 203.
• the freezing room 201 in the freezing temperature zone is cooled by forced convection.
• a second cooling chamber 207 is provided on the rear surface in the refrigerator compartment 206, and a second evaporator 208 and a second cooling fan 209 are accommodated.
• the evaporation temperature is set higher than that of the first evaporator 204, and the refrigerator compartment 206 and the vegetable compartment 202 in the refrigerator temperature zone are cooled by forced convection.
• the first chamber disposed on the back of the freezer compartment 201 and the vegetable compartment 202 Evaporator 204 shall not cool all storage rooms. Cooling of the storage room in the refrigeration temperature zone is shared by the second evaporator 208 provided in the refrigeration room 206, and the first evaporator 204 mainly cools the storage room in the refrigeration temperature zone such as the freezer room 201. Therefore, large cooling capacity is not required and frost formation is reduced.
• the outer dimension of the first evaporator 204 can be reduced, and the dimension in the depth direction can be reduced, and the thickness can be further reduced as compared with the first embodiment.
• the ratio of the depth dimension and the height dimension of the evaporator shown in (Table 1) is 1
• the range of: 4 to 1:10 is a condition that can reduce the thickness of the evaporator while maintaining the cooling capacity in practical use.
• the first evaporator 204 of the second embodiment since only the freezer compartment 201 is cooled, even if the ratio of the small amount of frost formation is close to 1:10, the deterioration of the cooling capacity is further reduced. Thinning can be achieved.
• the thickness of the first cooling chamber 203 can be further thinned. As a result, it is possible to secure a large depth in the freezer compartment 201 and the vegetable compartment 202. As a result, the freezer compartment 201 and the vegetable compartment 202 can be provided with a refrigerator that is further improved in usability by increasing the storage capacity and storage capacity as compared with the first embodiment.
• FIG. 3 is a longitudinal sectional view of the refrigerator according to the third embodiment of the present invention. Note that the same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.
• a cooling chamber 303 is partitioned in the vertical direction in the back regions of the freezer compartment 301 and the vegetable compartment 302. In the cooling chamber 303, an evaporator 304 and a cooling fan 305 disposed above the evaporator 304 are provided.
• a radiant heater 306 made of glass tube is provided as a defrosting device for defrosting frost adhering to the evaporator 304 and the cooling fan 305 during cooling.
• the defrosting water receiving tray 307 that receives water defrosted by the radiant heater 306 and the drain pipe 308 that guides the defrosting water connected to the defrosting water receiving tray 307 to the outside of the cabinet are configured.
• the defrost water drainage mechanism 309 is installed so as to be almost within the projection plane of the force above the cooling chamber 303.
• the drain pipe 308 passes through the bottom surface of the heat insulating box 310 and is drained to an evaporating dish 311 provided at the bottom of the heat insulating box 310.
• a recess 312 that is a space is provided on the rear surface of the bottom surface of the heat insulation box 310, and an evaporation fan 313 that is an evaporation promoting means for promoting evaporation of water that has been defrosted and accumulated in the evaporation dish 311 is provided.
• a planar condenser 314 is arranged on the bottom surface of the heat insulating box 310. Typical examples of the condenser 314 include a spiral fin capacitor in which a spiral fin is attached to a pipe, a plate capacitor in which a pipe is in contact with a metal plate, a wire capacitor, and a fin coil capacitor.
• the evaporation fan 313 not only promotes evaporation of the defrosted water, but also has an effect of improving the heat dissipation capability of the condenser 314 disposed on the bottom surface portion of the heat insulating box 310.
• the high temperature air exchanged by the condenser 314 is stirred by the evaporation fan 313 to prevent condensation on the outer surface around the freezer compartment 301 where the surface temperature tends to be relatively low.
• the evaporator 304, the cooling fan 305, the radiant heater 306, the defrost water drain mechanism 309, the recess 312, and the evaporating fan 313 are combined with the cooling chamber 303 and the heat insulating wall 315 on the back of the cooling chamber 303. It is installed in the lower part so that it may fit in the projection surface from above.
• the compressor 111 of the refrigeration cycle does not exist in the rear region of the freezing chamber 301, the above-described components are combined with the cooling chamber 303 and the heat insulating wall 3 15 in the rear region of the freezing chamber 301 and the vegetable chamber 302. Is almost housed in the projection surface from above. Thereby, the inner surface of the freezer compartment 301 and the vegetable compartment 302 does not protrude, and a clean and convenient storage room can be formed.
• the freezer compartment storage container 301a which is the first drawer-type storage compartment storage container
• a vegetable room storage container 302a which is a drawer-type storage room storage container, has substantially the same depth.
• both can be formed into a substantially rectangular parallelepiped shape.
• the rails for moving the freezer compartment storage container 301a and the vegetable compartment storage container 302a back and forth are also substantially equivalent in length.
• the evaporator 304 can be made thinner while maintaining the cooling capacity.
• Figure It is.
• the thickness of the cooling chamber 303 can be reduced, the storage volume can be increased, the storage performance can be improved, and the usability can be improved.
• the drawer allowance of the freezer compartment storage container 301a and the vegetable compartment storage container 302a can be increased. Usability can be improved by improving storage and visibility when pulled out.
• the evaporation fan 313 is disposed in the recess 312.
• the function of the evaporating fan 313 may be to enhance the heat dissipation by forced convection of the condenser 314, which is not only the promotion of the evaporation of the defrost water accumulated in the evaporating dish 311.
• the condenser installation space on the bottom surface of the heat insulating box 310 can be reduced to obtain the internal volume. Enlarge. This can lead to an increase in the internal volume of the freezer compartment 301. If the dimension in the width direction of the heat insulating box 310 is activated, the condenser 314 can be effectively accommodated. It is possible to arrange the evaporating fan 313 in the longitudinal direction so that it functions as a fan for promoting the heat radiation of the condenser 314.
• the welded portion of the condenser 314 pipe and the welded portion of the condensing pipe (not shown) for promoting the evaporation of defrosted water drained to the evaporating dish 311 are stored in the space inside the recess 312. As a result, workability can be improved.
• the entire mechanism for promoting evaporation of defrost water including the evaporating dish 311 may be housed in the recess 312.
• the arrangement of parts in the lower region can be consolidated more compactly, and the degree of influence on the inner volume can be reduced.
• a refrigerator having a high-pressure component of the refrigeration cycle such as a dryer (not shown) for removing moisture, or a refrigeration system in which a plurality of evaporators 304 are provided to perform switching as appropriate.
• workability and serviceability can be improved by storing a switching valve (not shown) for switching the refrigerant circuit in the recess 312 that is a space.
• the recess 312 can be used as a storage unit for an electronic control board (not shown) that controls the operation of the refrigerator, or a storage unit or connection unit for electrical wiring.
• the internal volume should not be reduced.
• the concave portion 312 that is a space is provided in the lower portion in the projection plane from above the region where the cooling chamber 303 and the rear heat insulating wall 315 are combined.
• utility space By using a so-called utility space, it is possible to accommodate refrigeration cycle related parts, parts, fans, electrical wiring, control boards, and other related parts that need to be provided in the lower region of the heat insulating box 310. Even if functional parts and parts as described above are provided, it is possible to provide a clean and easy-to-use storage room that does not compress the freezer compartment 301 and the vegetable compartment 302 without reducing the internal volume.
• a heat insulating box and a door forming a refrigerator main body, a compressor of a refrigeration cycle, an evaporator and a condenser, and a defrosted water evaporator of the evaporator are provided.
• a compressor is installed outside the heat insulation box above the evaporator provided inside the heat insulation box.
• a defrost water evaporator is installed outside the heat insulation box below the evaporator. It is possible to satisfy the evaporator's defrost water evaporation function while improving the efficiency by improving the heat dissipation by eliminating the rear force at the bottom of the heat insulation box. While maintaining the functions of the refrigeration cycle equipment, it is possible to increase the amount of space in the cabinet at a height that is convenient for the user.
• the condenser is provided outside the heat insulating box below the evaporator, and is used as a heating source for the defrost water evaporation device.
• the evaporation of defrost water can be promoted using the heat of condensation from a part of the condenser without depending on the condition.
• FIG. 4 is a cross-sectional view of the refrigerator according to the fourth embodiment of the present invention.
• a heat-insulating box body 401 which is configured to be insulated from the surroundings with a heat insulating material such as hard foam urethane, is divided into a plurality of sections to form a storage room.
• the uppermost storage room is a refrigeration room 402, the lowermost storage room is a freezing room 403, and the storage room between the freezing room 402 and the freezing room 403 is a vegetable room 404.
• the refrigerator compartment 402 is provided with a rotary door 405, and the freezer compartment 403 and the vegetable compartment 404 are both in the form of a storage room with drawer doors 406 and 407.
• a recess 62 is formed in the back of the top surface of the heat insulating box 401, and the compressor 63 is accommodated in the recess 62.
• an evaporator 76 is provided in the cooling chamber 70 provided on the back of the freezer compartment 403 and the vegetable compartment 406.
• a cooling fan 77 is provided in the upper part of the evaporator 76, and a defrost water draining mechanism 78 is located in the lower part of the evaporator 76.
• An evaporating dish 84 is located below the defrost water draining mechanism 78.
• an evaporating dish pipe 87 for circulating the high-temperature and high-pressure refrigerant compressed by the compressor 63 is provided in order to improve the ability to evaporate the defrost water.
• a condenser 83 is provided adjacent to the evaporating dish 84.
• the defrost water drainage mechanism 78 is arranged on the back of the lowermost storage chamber even in a simple refrigerator with a small number of storage chambers in the vertical direction as in the fourth embodiment. This shortens the drainage route to the evaporating dish placed outside the bottom of the heat insulation box.
• By effectively utilizing the heating action of the defroster it is possible to effectively defrost frost adhering to various places such as the cooling fan 77 and the evaporator 76.
• the thickness of the ineffective space that does not contribute to the indoor volume can be minimized and the depth of the lowermost storage chamber can be increased. That is, the same effect as in the first embodiment can be enjoyed also in the fourth embodiment.
• the freezer compartment 403 and the vegetable compartment 404 are drawer-type storage rooms. Even when either or both of these forces are rotary doors, the interior of the storage room has a substantially rectangular parallelepiped shape. Can be formed. It is possible to provide an easy-to-use refrigerator with less unevenness in the cabinet.
• the refrigerator has a simple layout, the total height of the refrigerator is low! In many cases, the compressor is placed on the top of the compressor and the stability in practical use is high. It is possible to provide a refrigerator that is heightened, safe and easy to use.
• FIG. 5 is a cross-sectional view of the refrigerator according to the fifth embodiment of the present invention.
• a heat insulating box body 501 configured to be insulated from the surroundings with a heat insulating material such as hard foam urethane is divided into a plurality of sections to form a storage room.
• the upper storage chamber is the freezer compartment 502, and the lower storage chamber is the refrigerator compartment 503.
• Both the freezing room 502 and the refrigerating room 503 are in the form of a storage room having rotary doors 50 4, 505.
• a recess 62 is formed in the back of the top surface of the heat insulation box 401, and the compressor 63 is accommodated in the recess 62.
• an evaporator 76 is provided in the cooling chamber 70 provided on the back of the freezer compartment 403 and the vegetable compartment 406.
• a cooling fan 77 is provided at the top of the evaporator 76, and a defrost water draining mechanism 78 is located at the bottom of the evaporator 76.
• An evaporating dish 84 is located below the defrost water draining mechanism 78.
• an evaporating dish pipe 87 for circulating the high-temperature and high-pressure refrigerant compressed by the compressor 63 is provided, and the evaporating dish 84 is condensed adjacent to the evaporating dish 84.
• a vessel 83 is provided.
• the refrigerator has a simple configuration with a smaller number of storage rooms in the vertical direction than Embodiments 1 and 2, but it is removed at the back of the refrigerator compartment, which is the lowest storage room.
• a frost water drainage mechanism 78 is arranged. This makes it possible to shorten the drainage path to the evaporating dish placed outside the bottom of the heat insulating box.
• By effectively utilizing the heating action of the defroster it is possible to effectively defrost frost adhering to cooling fans and evaporators.
• the thickness of the ineffective space can be suppressed as much as possible, and the depth of the refrigerating room can be enlarged in a substantially rectangular parallelepiped shape, without contributing to the internal volume. The effect that the depth of the storage shelves provided in the refrigerated room can be made substantially equal can be obtained.
• the refrigerator shown in Embodiment 5 has a lower overall height, but the lower refrigeration room door 505 is a rotary door that opens to the front of the center of gravity compared to a drawer door when opened. Coupled with the low movement of the compressor, it is possible to provide a safe and easy-to-use refrigerator as the compressor-top-fridge-type refrigerator has further improved installation stability and stability in practical use.
• the first invention defines a plurality of storage chambers in a heat insulating box having an open front. And it is a refrigerator which arrange
• a cooling chamber that is arranged in the downward direction and separated from the first storage chamber and the second storage chamber by a partition wall is provided.
• the evaporator of the refrigeration cycle is accommodated in the vertical direction inside the cooling chamber. Almost the entire height of the rear surface across the two storage chambers from the bottom of the first storage chamber to the top of the second storage chamber can be used as a cooling chamber that houses the evaporator vertically. .
• the evaporator can be thinned while maintaining the cooling capacity. As a result, the thickness of the cooling chamber can be reduced. Since the compressor is outside the area of the two storage chambers, the two storage chambers can be expanded without having a complicated space shape to increase the storage capacity, improve the storage efficiency and improve the usability.
• the second invention is a pull-out type first storage chamber and a pull-out type first storage chamber at least at the bottom of a plurality of storage chambers partitioned in a heat insulating box having an open front surface.
• a pull-out type second storage room which is partitioned by a heat insulation partition, is placed on the top of the door.
• the refrigerator is a refrigerator in which the compressor of the refrigeration cycle is disposed in a region other than the rear of the pull-out type first storage chamber and the pull-out type second storage chamber.
• the drawer-type first storage chamber and the drawer-type second storage chamber are separated from each other in the vertical direction across the back of the pull-out first storage chamber and the back of the pull-out second storage chamber.
• a cooling chamber partitioned by walls is provided.
• the evaporator of the refrigeration cycle is accommodated in the vertical direction inside the cooling chamber. Nearly the entire height of the back surface across the two storage chambers, from the bottom of the first storage chamber to the top of the second storage chamber, can be used as a cooling chamber that houses the evaporator vertically.
• the evaporator can be reduced in thickness while maintaining the cooling capacity. As a result, the thickness of the cooling chamber can be reduced. Since the compressor is outside the area of the two storage chambers, the two storage chambers can be expanded without having a complicated space shape to increase the storage capacity, improve the storage efficiency and improve the usability.
• the evaporator is disposed across the first storage chamber and the second storage chamber including the rear region of the heat insulating partition wall. Install a cooling fan in the space above the evaporator in the cooling chamber. Since the area of the combined height of the first storage chamber and the second storage chamber can be utilized, the degree of freedom to reduce the depth dimension by increasing the height of the evaporator is increased.
• the depth of the evaporator can be reduced, so that the thickness of the cooling chamber can be reduced and the depth of the first storage chamber and the second storage chamber can be increased.
• the space above the evaporator can be used to accommodate the cooling fan rationally.
• a plurality of storage chambers are defined in a heat insulating box having an open front surface, and a compressor for a freezing site is disposed in a region other than the rear of the first storage chamber at the bottom. It is a refrigerator.
• a cooling chamber defined in the back region of the first storage chamber at the bottom is provided, the evaporator of the refrigeration cycle is accommodated in the cooling chamber, and a defrosting device is provided in the lower part of the evaporator.
• a defrosting water drainage mechanism consisting of a defrosting water tray and a drainage pipe for leading the defrosting water out of the cabinet is installed directly under the defrosting device.
• a defrosting device and a defrosting water drainage mechanism without a compressor are arranged in the projection plane from above the cooling chamber and the heat insulating box constituting the back of the cooling chamber.
• the defroster can be rationally accommodated by utilizing the space below the evaporator.
• the defrost water drainage mechanism on the back of the lowermost storage chamber, the drainage path to the evaporation J1 arranged outside the bottom of the heat insulation box body can be shortened.
• the heating action of the defrosting device it is possible to effectively defrost frost adhering to various parts of the cooling fan, evaporator, defrosting water tray, and drain pipe.
• aligning these parts in the vertical direction the thickness of the invalid space that does not contribute to the indoor volume can be minimized, and the depth of the first storage chamber can be increased.
• the storage container provided in the first storage chamber has a substantially rectangular parallelepiped shape.
• the indoor space shape is not complicated, and large items can be stored reasonably, improving storage and improving user convenience.
• the ratio of the depth dimension to the height dimension of the evaporator is in the range of 1: 4 to 1:10. It is a thing.
• the depth dimension of the evaporator can be shortened while suppressing the degree of deterioration of the cooling capacity during frosting assuming actual use.
• the depth to the partition wall of the cooling chamber in the first storage chamber and the depth to the partition wall of the cooling chamber in the second storage chamber are set to substantially the same depth.
• the indoor space shape is not complicated, and large items can be stored reasonably, improving the storage capacity, and reducing the cost by sharing the internal parts such as shelves.
• the eighth invention includes storage containers that move in the front-rear direction by rails in the first pull-out storage chamber and the second pull-out storage chamber, respectively.
• the storage container has a substantially rectangular parallelepiped shape with an upper surface opened.
• the storage containers have substantially the same depth. Extend the length of the pull-out rail almost equally.
• the storage capacity can be improved with a sense of spaciousness against the increase in the storage capacity of the storage container.
• the user does not feel uncomfortable with pulling out the storage containers in both chambers and having different withdrawal allowances.
• the shape of the storage container can be arranged in a simple shape on both sides, and there is a sense of unity when pulled out, increasing the product quality of the refrigerator.
• the depths of the rails of the first pull-out storage chamber and the second pull-out storage chamber are substantially equal. Manufacturing costs can be reduced because the entire rail and some of the components can be shared. In particular, when high-quality, high-function rails are used, the cost of parts is high and the cost can be reduced.
• the height in the first storage chamber and the height in the second storage chamber are substantially equal. You can reduce costs by sharing the doors of both rooms.
• the drawer-type storage device can be shared by both rooms, and the storage container is generally a large-sized resin molded product, so there is a great cost merit.
• the heights of the doors provided on the opening surfaces of the heat insulating boxes of the first storage chamber and the second storage chamber are substantially equal.
• the door components can be shared, and manufacturing costs can be reduced. Also, there is no problem of surface condensation on the door with lower room temperature. If it does not occur, it can be used as a complete insulated door. In this case, the entire manufacturing cost including material cost, management cost and man-hour cost can be greatly reduced. Furthermore, inventory management becomes easy because the same door is used in the service area.
• the first storage chamber is a freezing chamber.
• the depth of the lowermost freezer compartment can be expanded, and the interior space shape is not complicated, and large storage items can be stored reasonably, thereby improving the storage efficiency. It is possible to provide a highly convenient refrigerator that can sufficiently cope with the increase in the frequency of use of frozen foods due to the increase in short-term frozen stock foods as well as long-term frozen stock foods.
• the second pull-out storage room is a vegetable room. It is easy to use and can increase the storage capacity for health-oriented vegetables and fruits at the height of the middle tier, increasing the convenience of freshness management.
• the arrangement ratio of the rear region of the first storage chamber is larger than the arrangement ratio of the rear region of the second storage chamber. It is.
• the influence of the supercooling to the vegetable room side which is a refrigeration temperature zone can be reduced.
• the insulation structure of the partition on the vegetable room side can be simplified, absorbing the difference in thickness in the vertical direction as much as possible, and suppressing the influence on the depth of both rooms.
• the evaporator is at least a first evaporator for cooling the first storage chamber, and another storage chamber is provided in a region other than the cooling chamber separately from the first evaporator.
• a second evaporator for cooling is provided.
• the cooling of the storage room in the refrigeration temperature zone is shared by the second evaporator, and the first evaporator cools mainly the storage room in the freezing temperature zone.
• the amount of frost formation can be reduced without requiring a large cooling capacity. For this reason, it is possible to reduce the outer dimensions of the first evaporator, and inevitably reduce the dimension in the depth direction, further expanding the depths of the first storage chamber and the second storage chamber. it can.
• the compressor is disposed on the top surface of the heat insulating box. Compressor placement If the height of the refrigerator is allowed when placing it outside the bottom freezer compartment and the rear area of the vegetable compartment, the refrigerator will not affect the storage area of other storage rooms. It is possible to improve the use by improving the overall storage capacity.
• the rear part of the top surface of the heat insulation box is recessed into the uppermost storage chamber to form a recess.
• a compressor is disposed in the recess.
• the rear of the uppermost part of the upper storage chamber corresponding to the recess is a substantially ineffective space that is difficult for the user to reach, so even if a compressor is arranged, the storage capacity is not substantially affected.
• the rear area of the first storage room and the second storage room The overall effect of eliminating the compressors can be maximized, and the overall height of the refrigerator can be increased to lower the installation efficiency. Usability can be improved in a well-balanced manner.
• a recess serving as a housing space is provided in the lower part of the projection plane from above the cooling chamber and the heat insulating wall of the heat insulating box constituting the back surface of the cooling chamber. It can accommodate refrigeration cycle related parts, parts, fans, electrical wiring, control boards and other related parts that need to be installed in the lower area of the heat insulation box. It is possible to provide a storage room that can be used without any pressure on the indoor side, without having to reduce the internal volume, and with a sense of comfort.
• an evaporation promoting means for promoting the evaporation of defrosted water drained from the defrosted water drainage mechanism in the recess. Evaporation can be promoted even if a compressor or condenser is not located nearby, and there is no need to squeeze the inside of the room, without reducing the internal volume. Can be provided.
• the evaporation promoting means is a forced draft fan.
• the evaporation promoting effect can be enhanced in a non-contact manner, and the evaporation fan can not only promote evaporation of the defrosted water but also eliminate air stagnation and prevent condensation on the surrounding structure.
• the twenty-first invention is such that the condenser of the refrigeration cycle is arranged at the bottom of the heat insulation box and is cooled by a forced draft fan, and the heat dissipation capability of the condenser is also improved. Can do.
• the refrigerator according to the present invention improves usability by expanding the depth of the lowermost storage chamber and at least the storage chamber immediately above it in a simple shape to improve the storage capacity. It can be widely applied to applications such as refrigerators and freezers that have multiple storage rooms, so its industrial applicability is high.

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