WO2006030736A1

WO2006030736A1 - Refrigerator

Info

Publication number: WO2006030736A1
Application number: PCT/JP2005/016755
Authority: WO
Inventors: Kazuya Nakanishi; Syouhei Inamori
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2004-09-13
Filing date: 2005-09-12
Publication date: 2006-03-23
Also published as: TWI343467B; JP2006105572A; TW200609473A

Abstract

A refrigerator enabling an increase in usability while securing the depth dimensions of drawer type storerooms at the lowest part and its upper part. In the refrigerator, a compressor (111) is disposed at the rear upper part of an insulated box (101), a drawer type refrigeration room (103) is formed at the lowest part, and a drawer type vegetable room (104) is formed at its upper part. A cooling room (112) is formed at the rear sides of the refrigeration room (103) and the vegetable room (104). An evaporator (119) is disposed across the refrigeration room (103) and the vegetable room (104). The depths of a storage container (116) for the refrigeration room and a storage container (117) for the vegetable room are equally extended to form them in similar simple shapes. Accordingly, the usability of both the refrigeration room (103) and the vegetable room (104) can be increased, the quality of the refrigerator as a refrigerator can be increased, and manufacturing cost can be reduced.

Description

Technical field

TECHNICAL FIELD [0001] 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.

Background art

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

Conventionally, 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. In such a configuration, 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.

[0004] In order to solve the problems related to the conventional storage properties, 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. As shown in FIG. 6, the heat insulation box 1 has a refrigerator compartment 2, a freezer compartment 3, and a vegetable compartment 4 in order of increasing force. In the front opening of the refrigerator compartment 2, a refrigerator compartment rotary door 5 is provided. In addition, 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.

[0006] 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.

[0007] 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.

[0008] Further, 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.

[0009] Thereby, compared with the case where the compressor 16 and the condenser 17 are housed in the lower back of the heat insulation box 1, the inner volume of the vegetable compartment 4, which is the lowest storage compartment, is configured deeply. Can do. The space shape of the storage room is not complicated due to the ineffective space such as the compressor 16, and the storage property can be improved.

[0010] In the above-described conventional configuration, 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. However, because it has a cooling chamber in which 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.

[0011] For this reason, 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 .

[0012] In addition, since the freezer compartment 3 has a small depth, it gives a narrow impression that it is less convenient than the vegetable compartment 4. In particular, considering the current social environment, 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. [0013] Furthermore, since 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.

[0014] As described above, in the conventional configuration described above, even if the arrangement configuration of the refrigeration cycle is devised and the compressor 16 is removed from the area of the lowermost storage chamber to increase the storage capacity and storage capacity, the evaporator still remains. Since the 20 arrangements are not devised, there is a difference in storage capacity and storage between the lowermost storage room and the storage room directly above it, that is, the freezer room 3 and the vegetable room 4. For this reason, in the case of a drawer-type storage room, there is a problem in terms of usability as well as a problem in terms of manufacturing cost due to the difference in the withdrawal allowance of the storage containers 9a and 9b.

[0015] Further, by disposing the compressor 16 above the heat insulating box 1, it is natural that a machine room space for accommodating the compressor 16 cannot be provided in the lower region of the heat insulating box 1. Therefore, although not shown in the figure, in order to accommodate the parts of the refrigeration cycle, parts, electrical wiring, control boards and other related parts arranged in the lower region of the heat insulation box 1, these parts are newly added. And space must be provided to accommodate the parts. For this reason, there was a problem that it was necessary to create these new accommodation spaces without squeezing the space inside the warehouse.

[0016] In particular, if the 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. I can't. For example, a forced draft fan or the like needs to be newly installed as an evaporation promoting means instead. However, it was necessary to devise a way to create a space that could accommodate such additional parts without squeezing the space inside the cabinet.

Disclosure of the invention

[0017] 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. . At the same time, the aim is to provide a refrigerator that reduces the manufacturing costs of related components. Target.

[0018] In order to solve the above conventional problems, 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.

[0019] In the refrigerator of the present invention, 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.

[0020] With this, almost the entire height of the back surface across the two storage chambers can be utilized as a cooling chamber for storing the evaporator in the vertical direction. In addition, if the height of the evaporator is increased by virtue of the height of the cooling chamber and the depth of the evaporator is shortened, the evaporator can be made thinner while maintaining the cooling capacity. As a result, the thickness of the cooling chamber can be reduced, and the two storage chambers can be expanded without a complicated space shape to improve usability.

[0021] In particular, in the case where the two storage chambers are storage chambers equipped with drawer-type storage containers, the depths of the storage chambers are made approximately the same. As a result, 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.

[0022] In addition, 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.

[0023] In addition, 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.

Brief Description of Drawings

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.

Explanation of symbols

[0025] 101, 310 heat insulation box

103, 201, 301 Freezer room (first storage room)

104, 202, 302 Vegetable room (second storage room)

110, 312 recess

111 Compressor

112, 303 Cooling room

116, 301a Freezer compartment (first drawer storage compartment)

117, 302a Container for vegetable compartment (second drawer storage compartment)

118, 304 evaporator

119, 305 Cooling fan

120, 306 Radiant heater (defrosting device)

121, 307 Defrost water tray

122, 308 Drain pipe

123, 309 Defrost water drainage mechanism

203 First cooling chamber

204 First evaporator

208 Second evaporator

313 Evaporation: Fan (Forced ventilation fan)

314 condenser 315 heat insulation wall

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same components as those in the conventional example or the above-described embodiment, and the detailed description thereof is omitted. The present invention is not limited to the embodiments.

(Embodiment 1)

FIG. 1 shows a longitudinal sectional view of the refrigerator according to the first embodiment of the present invention.

[0028] In FIG. 1, 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. The refrigerator compartment 102 at the top, the freezer compartment 103 as the first storage compartment at the bottom, and the vegetable compartment 104 as the second storage compartment directly above the freezer compartment 103 between the refrigerator compartment 102 and the freezer compartment 103. Is arranged. 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.

[0029] 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. In addition, 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.

[0030] 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.

[0031] 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.

That is, the recess 110 in which the compressor 111 is disposed is formed by biting into the uppermost rear region in the refrigerator compartment 102. Therefore, the compressor 111 is disposed in the rear region of the lowermost storage chamber of the heat insulating box 101, which has been conventionally used. [0033] 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.

[0034] Further, 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.

In addition, 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.

[0036] 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.

[0037] In the cooling chamber 112, typically, 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.

[0038] In the upper space of the evaporator 118, 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. In the lower space of the evaporator 118, 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.

[0039] Further, 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.

[0040] 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 (not shown) 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.

[0041] For this reason, 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.

[0042] As a result, 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.

[0043] Here, 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.

[0044] Similarly, 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. As for 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.

Here, the rectangular parallelepiped shape refers to a container having no large unevenness inside the container. The shape is not limited to a right angle.

In accordance with this, 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.

[0047] The operation and action of the refrigerator configured as described above will be described below.

[0048] First, the operation of the refrigeration cycle will be described. Depending on the set temperature in the cooking cabinet 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). After that, in the cylinder tube, 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.

[0049] 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.

[0050] 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. 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.

[0051] In particular, in recent years, the most frequently used refrigeration room has been placed in the upper stage so that it can be opened and removed in front of the user from the viewpoint of user usage frequency, freshness management, and ergonomics. To do. Use a vegetable room where heavy objects are put in and out and health-conscious and freshness management is required on a daily basis. And don't put it in and out for a long time! Refrigerators that have a freezer compartment at the bottom are also becoming mainstream because there are some stock products, etc., and there is a need to consider dropping during handling. In such a layout, it was a disadvantage that the storage capacity of the lowermost freezer room could not be secured sufficiently in the layout of the machine room including the compressor. According to the first embodiment, the depth of the lowermost freezer compartment 103 can be increased in the same manner as the vegetable compartment 104. Moreover, 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

[0052] These storage capacity and storage-related effects can be enjoyed even if the freezing room 103 and the vegetable room 104 are not drawer-type storage rooms. The utility is even greater if it is a drawer-type storage room. That is, by making the lengths of the drawer rails substantially the same, the drawer allowance of the freezer compartment storage container 116 and the drawer allowance of the vegetable compartment storage container 117 can be made substantially equal. The user does not feel uncomfortable with the difference in the pull-out cost by pulling out the storage containers in both rooms on a daily basis. In addition, the shape of the withdrawn storage container can be aligned with a simple shape that is almost a rectangular parallelepiped. There is a sense of unity when it is pulled out, and the product quality of the refrigerator is high.

[0053] In addition, as the depths in the freezer compartment 103 and the vegetable compartment 104 both increase, 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. When selecting 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.

[0054] If 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.

[0055] It should be noted that such a cost reduction effect is spread not only to the rail but also to the sharing of related parts such as a frame that moves the rail surface by placing the storage container 116 for the freezer compartment and the storage container 117 for the vegetable compartment. It is also possible.

[0056] Even if the freezer compartment 103 and the vegetable compartment 104 are not drawer-type storage compartments, parts such as shelves provided in the room can be shared by making the interior depth almost the same. [0057] Further, in the first partition 113, a cooling fan 119, a cool air discharge air passage (not shown) for supplying cool air to each storage room, and the cold air heat-exchanged from each storage room are the evaporator 118. By constructing a cooling air return path (not shown) that returns to step 1, assembly is facilitated and the number of assembly steps can be reduced.

[0058] In addition, by providing a 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.

[0059] Here, 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. In addition, 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.

[0060] In order to further reduce the thickness of the cooling chamber 112, there is a method of maintaining the cooling capacity by reducing the depth dimension of the evaporator 118 and increasing the height dimension accordingly. It is preferable to take appropriate measures such as measures against clogging of frost due to a decrease in the inlet area of the evaporator 118 and measures against insufficient radiant heating of the radiant heater 120 due to an increase in height.

[0061] Countermeasures against clogging with frost formation include arrangement of return air passages and fin arrangement. As a countermeasure against heating, 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. In addition, an evaporator other than the fin and tube may be used, and an evaporator that can reduce the thickness may be employed.

[0062] Even if the thickness of the evaporator 118 is suppressed, the depth dimension of the cooling fan 119 may not be accompanied by this. Moreover, 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.

[0063] Note that 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. Thereby, the influence of the supercooling to the vegetable compartment 104 side which is a refrigeration temperature zone can be reduced. Further, 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.

[0064] In general, the required evaporator cooling capacity is determined mainly by the external dimensions, volume, etc. of the refrigerator. In order to ensure the required cooling capacity, 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. For example, in the case of large refrigerators, 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.

[0065] In general, the evaporator has a depth of about 60mm to 75mm in terms of cooling capacity and anti-frost surface. In addition, 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!

[0066] 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. For example, the evaporator depth is 40mm to 50mm, and the height is expanded compared to the conventional one.

[0067] However, generally, if the evaporator depth dimension is reduced, the lower surface area of the suction side of the evaporator is reduced, so that the lower surface of the evaporator is clogged with frost when the door is opened and closed frequently. Become. For this reason, possibility that cooling capacity will deteriorate becomes high. (Table 1) shows the ratio between the depth and height of the evaporator when the external volume is constant, and the cooling of the evaporator during frost formation. It shows the relationship between the degree of capability deterioration and the degree of thinning of the evaporator.

[0068] [Table 1]

[0069] According to (Table 1), when the depth dimension of the evaporator and the height dimension of the evaporator exceed the ratio of 1:10, the thickness of the evaporator can be sufficiently reduced to achieve the purpose of the first embodiment. To do. However, since the opening area on the air suction side is small, clogging due to frost formation causes a significant deterioration in the cooling capacity of the evaporator due to a decrease in air flow, that is, heat exchange. On the other hand, the smaller the ratio, the larger the opening area on the air suction side, and the degree of cooling capacity deterioration due to clogging during frost formation is suppressed. If the above ratio is less than 1: 4, the height of the evaporator will be shortened, and the heat exchange distance with the finned refrigerant pipe will gradually be secured when the amount of frost formation is small. Indicates. Further, the object of Embodiment 1 for reducing the thickness of the evaporator cannot be achieved. In 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:

[0070] It should be noted that 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.

[0071] When the ratio between the depth dimension of the evaporator and the height dimension of the evaporator is in the range of 1: 4 to 1:10, frost formation is performed in comparison with the conventional ratio of 1: 2 to 1: 3. Although the degree of deterioration of the cooling capacity at the time is inferior, the difference is small enough to meet the purpose of thinning the evaporator.

[0072] As described above, by configuring the depth and height of the evaporator 118 at a ratio of 1: 4 to 1:10, 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.

[0073] Further, 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.

In addition, 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. Thereby, the components of the freezer compartment drawer door 106 and the vegetable compartment drawer door 107 can be shared, and the manufacturing cost can be reduced. 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. However, if 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.

[0075] Also, for example, if a highly heat-insulating vacuum heat insulating material is used for the freezer compartment drawer door 106, the difference in wall thickness with the vegetable compartment drawer door 107 can be absorbed while maintaining the heat insulation performance, and as a heat insulation door finished product, The external shape can be shared, and the assembly in the manufacturing process becomes easy.

[0076] If the heights of the freezer compartment 103 and the vegetable compartment 104 are substantially equal, 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.

On the other hand, in the first embodiment, 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. As described above, Embodiment 1 has proposed a configuration that effectively improves usability in consideration of the balance of the entire refrigerator. With regard to the arrangement of 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. For example, if the height of the refrigerator permits, 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.

In Embodiment 1, 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. However, in the opposite arrangement, 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.

[0080] In addition, the 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. As a result, other than the vegetable room and freezer room, for example, 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. In addition, by providing 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.

[0081] (Embodiment 2)

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.

[0082] 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. In the first cooling chamber 203, a first evaporator 204 and a first cooling fan 205 are provided. The freezing room 201 in the freezing temperature zone is cooled by forced convection. In addition, 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.

[0083] In the configuration as described above, 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.

[0084] For this reason, 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.

[0085] In the first embodiment, the ratio of the depth dimension and the height dimension of the evaporator shown in (Table 1) is 1

It was stated that 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. In the case of 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.

As described above, if the first evaporator 204 can be thinned, 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.

(Embodiment 3)

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.

In the lower space of the evaporator 304, 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.

[0089] Further, 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. In addition, 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. Install. 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.

Note that 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.

Here, 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.

As described above, since 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.

[0094] When the freezer compartment 301 and the vegetable compartment 302 are drawer-type storage rooms as in Embodiment 3, 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. As for its shape, since the protruding portion corresponding to the conventional machine room is not eaten behind the freezer compartment 301, both can be formed into a substantially rectangular parallelepiped shape.

In accordance with this, 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.

[0096] Further, if the height of the evaporator 304 is increased by virtue of the height of the cooling chamber 303 and the depth dimension of the evaporator 304 is shortened, the evaporator can be made thinner while maintaining the cooling capacity. Figure It is. As a result, 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.

[0097] If the parts related to the drawer structure are selected according to the expansion of the depth in the storage chamber, 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.

In the above example, 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.

[0099] Further, if a fin coil capacitor (not shown) is used as the condenser 314 and is disposed so as to be accommodated in the recess 312, 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.

[0100] Also, 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.

[0101] Furthermore, the entire mechanism for promoting evaporation of defrost water including the evaporating dish 311 may be housed in the recess 312. As a result, 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.

[0102] Further, it is possible to provide 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. In this case, 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.

[0103] In addition, 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. As described above, 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. 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.

[0105] The configuration according to the third embodiment and the typical operational effects are summarized as follows.

[0106] 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.

[0107] Further, 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.

[Embodiment 4]

FIG. 4 is a cross-sectional view of the refrigerator according to the fourth embodiment of the present invention. In FIG. 4, for example, 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.

In addition, 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. [0110] In addition, 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. In the evaporating dish 84, 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.

[0111] The arrangement of the refrigeration cycle-related devices is the same as that in the first embodiment.

[0112] In the configuration as described above, 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. Furthermore, by aligning these components in the vertical direction, 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.

[0113] In Embodiment 4, 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.

[0114] In addition, if 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.

[0115] (Embodiment 5)

FIG. 5 is a cross-sectional view of the refrigerator according to the fifth embodiment of the present invention. In FIG. 5, for example, 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. In addition, 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.

[0117] In addition, 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. In order to improve the ability to evaporate defrost water in the evaporating dish 84, 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.

[0118] The arrangement configuration of the refrigeration cycle-related devices is the same as that in the first embodiment.

In the configuration as described above, 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. Furthermore, by aligning these parts upward and downward, 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.

[0119] In many cases, 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.

[0120] The features of the present invention are disclosed without omission in the first to fifth embodiments. The following is a summary.

[0121] In the refrigerator of the present invention, 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 | positions the compressor of a refrigerating cycle in the area | regions other than the back of the 2nd storage room divided by the heat insulation partition wall in the upper part of the 1st storage room and the 1st storage room of the lowest part. Across the back of the first storage room and the back of the second storage room 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. .

[0122] If the height of the evaporator is increased by virtue of the height of the cooling chamber and the depth of the evaporator is shortened, 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.

[0123] 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.

[0124] If the height of the evaporator is increased by virtue of the height of the cooling chamber and the depth of the evaporator is shortened, 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.

[0125] In addition, if the parts related to the drawer structure are selected in accordance with the expansion of the depth in the storage chamber, the bow allowance for the container I can be expanded, and the storage performance when the bow I is expelled can be increased. Visibility can be improved and usability can be improved. [0126] According to a third invention, in the first or second invention, 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. Then, 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. In addition, even if the evaporator is placed across both chambers, the space remains in the vertical direction of the cooling chamber. Of this, the space above the evaporator can be used to accommodate the cooling fan rationally. .

[0127] According to a fourth aspect of the present invention, 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. Of the remaining space after placing the evaporator on the back of the first storage room, the defroster can be rationally accommodated by utilizing the space below the evaporator.

[0128] Further, by arranging 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. By effectively utilizing 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. Furthermore, by 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.

[0129] In the fifth invention, 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.

[0130] In the sixth invention, 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. In addition, it is possible to reduce the thickness of the cooling chamber and increase the depth of the first storage chamber and the second storage chamber.

[0131] In the seventh invention, 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.

[0132] 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. In addition, the storage containers have substantially the same depth. Extend the length of the pull-out rail almost equally. As a result, it is possible to expand the freezer compartment storage container and the vegetable compartment storage container with the same allowance for drawing out. The storage capacity can be improved with a sense of spaciousness against the increase in the storage capacity of the storage container. In addition, the user does not feel uncomfortable with pulling out the storage containers in both chambers and having different withdrawal allowances. In addition, 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.

[0133] In the ninth invention, 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.

[0134] In the tenth invention, 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. In addition, 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.

[0135] In an eleventh aspect, 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.

[0136] In a twelfth aspect, 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.

[0137] In a thirteenth aspect, 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.

[0138] In the fourteenth aspect, in the arrangement ratio of the evaporator in the height direction in the cooling chamber, 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. In addition, 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.

[0139] In the fifteenth aspect, 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. As a result, 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.

[0140] In the sixteenth invention, 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.

[0141] In the seventeenth aspect of the invention, the rear part of the top surface of the heat insulation box is recessed into the uppermost storage chamber to form a recess. And 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.

[0142] In an eighteenth aspect of the present invention, 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.

[0143] According to a nineteenth aspect of the present invention, there is provided 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.

[0144] In the twentieth invention, 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.

[0145] 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.

Industrial applicability

[0146] As described above, 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.

Claims

The scope of the claims

[1] A plurality of storage chambers are defined in a heat insulating box with an open front, and the compressor of the refrigeration cycle is partitioned by a heat insulating partition wall at the bottom of the first storage chamber and above the first storage chamber. A refrigerator disposed in a region other than the rear of the second storage chamber, wherein the first storage chamber is arranged in a vertical direction across the back surface of the first storage chamber and the back surface of the second storage chamber. A refrigerator in which a cooling chamber partitioned by a partition wall from the storage chamber and the second storage chamber is provided, and an evaporator of a refrigeration cycle is accommodated in the vertical direction inside the cooling chamber.

[2] Among the plurality of storage chambers partitioned in the heat insulating box with the front opened, at least the first pull-out storage chamber at the bottom and the upper part of the first pull-out storage chamber with an insulating partition wall And a compartmented drawer-type second storage chamber, and the compressor of the refrigeration cycle is arranged in a region other than the rear of the drawer-type first storage chamber and the drawer-type second storage chamber. A refrigerator that is arranged in a vertical direction 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 pull-out type first storage chamber and the refrigerator The drawer-type second storage chamber is a refrigerator in which a cooling chamber partitioned by a partition wall is provided, and an evaporator of the refrigeration cycle is accommodated in the vertical direction inside the cooling chamber.

[3] The evaporator is disposed across the first storage chamber and the second storage chamber including the rear region of the heat insulating partition wall, and a cooling fan is disposed above the evaporator in the cooling chamber. The refrigerator according to claim 1 or 2, wherein a refrigerator is disposed.

[4] A refrigerator in which a plurality of storage chambers are defined in a heat insulating box having an open front surface, and a compressor of a refrigeration cycle is disposed in an area other than the rear of the first storage chamber at the bottom. A cooling chamber partitioned in the back region of the lower first storage chamber is provided, an evaporator of a refrigeration cycle is accommodated inside the cooling chamber, a defrosting device is provided below the evaporator, The heat insulation box which is provided with a defrost water drainage mechanism comprising a defrost water tray and a drain pipe for leading the defrost water out of the chamber immediately below the defrost device, and constitutes the cooling chamber and the back of the cooling chamber The refrigerator which has arrange | positioned the said defrost apparatus and the said defrost water drainage mechanism which do not provide the said compressor in the projection surface from the upper direction of a body.

[5] The refrigerator according to claim 4, wherein the storage container provided in the first storage chamber has a rectangular parallelepiped shape.

6. The refrigerator according to any one of claims 1 to 5, wherein a ratio between a depth dimension and a height dimension of the evaporator is in a range of 1: 4 to 1:10.

7. 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 the same depth. Or

The refrigerator according to item 1.

[8] Each of the first pull-out storage chamber and the second pull-out storage chamber includes a storage container that moves in the front-rear direction by a rail, and the storage container has a rectangular parallelepiped shape with an open top surface and a depth. The refrigerator according to claim 2 or 7, wherein is an equivalent storage container.

9. The refrigerator according to claim 8, wherein the rails of the first pull-out storage chamber and the second pull-out storage chamber have the same depth.

[10] The refrigerator according to claim 1 or 2, wherein the height in the first storage chamber is equal to the height in the second storage chamber.

[11] The refrigerator according to claim 10, wherein the doors provided on the opening surfaces of the heat insulating boxes of the first storage chamber and the second storage chamber have the same height.

12. The refrigerator according to any one of claims 1 to 11, wherein the first storage chamber is a freezing chamber.

13. The refrigerator according to claim 12, wherein the second pull-out storage room is a vegetable room.

14. The arrangement ratio of the rear region of the first storage chamber in the arrangement ratio in the height direction of the evaporator in the cooling chamber is greater than the arrangement ratio of the rear region of the second storage chamber. Or the refrigerator according to 13.

[15] The evaporator is at least a first evaporator for cooling the first storage chamber, and a second storage chamber is cooled separately from the first evaporator in a region other than the cooling chamber. 14. The refrigerator according to claim 12 or 13, wherein two evaporators are provided.

[16] The refrigerator according to any one of claims 1 to 15, wherein the compressor is disposed on a top surface portion of the heat insulating box.

17. The refrigerator according to claim 16, wherein a rear portion of the top surface of the heat insulating box is recessed toward the uppermost storage chamber to form a recess, and the compressor is disposed in the recess.

18. The refrigerator according to claim 5, wherein a recess serving as a storage space is provided in a lower part in 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.

[19] The refrigerator according to [18], wherein an evaporation promoting means for accelerating evaporation of defrost water drained from the defrost water drain mechanism is provided in the recess.

20. The refrigerator according to claim 19, wherein the evaporation promoting means is a forced draft fan.

21. The refrigerator according to claim 20, wherein a condenser of a refrigeration cycle is disposed at the bottom of the heat insulating box and is cooled by the forced draft fan.