JP2010121842A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase volume efficiency of a vegetable compartment positioned in the lowest part of a refrigerator and improve usability by a user. <P>SOLUTION: In the refrigerator constituting, from the upper side, a refrigerating compartment 104, a freezing compartment 107 and the vegetable compartment 108 in the lowest position, a compressor 102 and an evaporator 109 are arranged on the upper part on the back face of a refrigerant body and the rear position of the freezing compartment 107, respectively. A water discharge route 202 and a water discharge pipe 203 for guiding drain water to outside of the refrigerator are arranged below the evaporator 109, and a defrosting water evaporation device 110 is arranged on the lower part on the back face of the refrigerant body. A heat generating means 205 is provided in an evaporation pan 204 of the defrosting water evaporation device 110 to enhance evaporation capacity. By making the defrosting water evaporation device 110 compact, storage efficiency of the vegetable compartment 108 in the lowest part can be drastically increased. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a defrosted water evaporator and a refrigerator.

  Conventionally, this kind of refrigerator defrost water evaporation method employs a method of using heat obtained together with cooling or heat dissipation of the heat-generating components to evaporate the defrost water stored in the evaporating dish. There are various methods for the heat source. For example, the defrosted water may be directly heated.

  FIGS. 7A and 7B show a conventional refrigerator described in Patent Document 1. FIG. As shown in FIG. 7, provided on the upper side of the refrigerator body 1, the refrigeration cycle storage part 2 in which the refrigeration cycle is stored, the evaporating dish 3 provided in the lower part of the refrigerator body 1, and the refrigerator body 1. Next to the refrigeration cycle storage unit 2 are provided an evaporator 4 and heat source means 5 for removing frost on the surface of the evaporator 4.

  When the heat source means 5 is heated, the outside air is heated by the heat generating parts of the refrigeration cycle as the outside air is sucked into the water passage 6 for supplying the defrosted water to be dropped to the evaporating dish 3 and the refrigeration cycle storage unit 2. A fan device 7 that warms the air and a duct 8 that is provided in the refrigerator main body 1 and that supplies the hot air discharged from the fan device 7 to the evaporating dish 3 are provided.

  Next, an outline of the configuration of a conventional refrigeration cycle will be described with reference to FIGS. The high-temperature gas refrigerant discharged from the compressor 9 becomes a medium-temperature liquid refrigerant in the process of passing through the condenser 10, and becomes a low-temperature liquid refrigerant by the capillary tube 11. Evaporation occurs in the process of passing the low-temperature liquid refrigerant through the evaporator 4, and the closed-loop is returned to the compressor 9. Since the evaporator 4 has a low temperature, it forms as frost on the surface of the evaporator 4 when exchanging heat with the air in the storage compartment 12.

Since the frost accumulates as the operation time of the compressor 9 elapses, the heat source means 5 is appropriately heated to remove the frost on the surface of the evaporator 4, the frost is defrosted, and the defrost water evaporates through the water passage 6. It is supplied to the dish 3. The compressor 9 and the condenser 10 which are heat generating components in the refrigeration cycle storage unit 2 are cooled and radiated by the air sucked from the outside air by the fan device 7, and the generated hot air is sent from the duct 8 to the opening of the evaporating dish 3. The water temperature in the evaporating dish 3 is raised to evaporate (see, for example, Patent Document 1).
JP-A-8-247626

  In the case of this type of evaporation method, there are the following three items as factors for evaporating water. The first is the surface wind speed, the second is the water temperature, and the third is the area of the opening where water and outside air contact. However, in the above-described conventional configuration, the wind speed passing through the surface of the evaporating dish 3 is weak and water evaporation is inefficient, and since the heat source is not disposed at the bottom, the wind of the duct 8 from the heat source to the bottom is Since the heat loss in the road is large and it is inefficient to increase the water temperature, it is necessary to increase the opening area of the evaporating dish 3, and there is a problem that the volumetric efficiency of the storage chamber cannot be increased.

  The present invention solves the above-mentioned conventional problems, and since the evaporation performance can be improved by greatly improving the rise in water temperature, which is the second factor, as a factor for evaporating water, it is compact with a heat source up. The purpose of the present invention is to provide a refrigerator that can greatly improve the storage efficiency of the food of the consumer because the volumetric efficiency of the storage room can be greatly increased.

  In order to solve the above-mentioned conventional problems, in a refrigerator having a refrigerator compartment, a freezer compartment, and a vegetable compartment at the bottom, a compressor is provided at the upper back of the refrigerator main body, an evaporator is provided at a rear position of the freezer compartment, and this evaporation is performed. The drainage pipe and the drainage pipe that guides drain water to the outside of the refrigerator are disposed below the container, and the defrosting water evaporation device is disposed at the lower back of the refrigerator main body, and the defrosting water evaporation device is an upper surface that receives drain water below the drainage pipe. The evaporating dish is composed of a heat generating means, at least two openings, an air passage formed in the internal space, and a blowing means for forcibly convection of air in the air passage. It is characterized by that.

  As a result, the temperature of the drain water in the evaporating dish can be significantly increased and the evaporating performance can be improved, so that the opening area of the evaporating dish can be reduced and the defrost water evaporating apparatus can be made compact, and the volume of the storage chamber can be reduced. The efficiency can be greatly increased, and the food storage efficiency of consumers can be greatly improved.

  The present invention solves the above-described conventional problems, and can greatly increase the temperature of the drain water in the evaporating dish to improve the evaporating performance. It can be made compact, the volumetric efficiency of the vegetable room can be greatly increased, and the food storage efficiency of consumers can be greatly improved.

  1st invention is the refrigerator which comprised the refrigerator compartment from the top, the freezer compartment, and the vegetable compartment in the lowermost part. In the refrigerator main body back upper part, a compressor is located in the back position of a freezer compartment, and this evaporator is below. A drainage pipe and a drain pipe that guides drain water to the outside of the cabinet, a defrost water evaporation device is arranged at the lower back of the refrigerator main body, and the defrost water evaporation device seals the upper surface that receives drain water below the drain pipe The evaporating dish is composed of a dish-shaped evaporating dish, the evaporating dish is composed of heat generating means, at least two openings, an air passage formed in the internal space, and an air blowing means for forcibly convection of air in the air path. Evaporation performance can be improved by drastically increasing the temperature of the drain water in the dish, so the opening area of the evaporating dish can be reduced and the defrost water evaporation device can be made compact, greatly increasing the volumetric efficiency of the vegetable compartment. Can be raised and stored for consumer food The rate can be greatly improved.

  According to a second invention, in the first invention, the condenser refrigerant pipe of the heating means is brought into contact with the outer surface of the evaporating dish of the defrosting water evaporator, whereby the heat source can be saved and the volumetric efficiency of the vegetable compartment can be greatly increased. And can greatly improve the food storage efficiency of consumers.

  According to a third invention, in the first invention, there is provided an evaporation promoting plate that partitions the inside of the evaporation dish of the defrosting water evaporator, and the condenser refrigerant pipe of the heat generating means is brought into contact with the evaporation promoting plate and the inner surface of the evaporation dish. Therefore, the surface area where water and heat source come into contact can be improved, and the rise in water temperature can be greatly improved, so the defrost water evaporator can be made compact and the storage efficiency of the bottom vegetable room is greatly increased. Can be improved.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, the condenser refrigerant pipe of the heating means is arranged in a spiral shape on the inner surface of the evaporating dish of the defrosted water evaporator, thereby improving the surface area where the water and the heat source come into contact. The temperature of the defrosted water evaporator can be made compact and the storage efficiency of the lowermost vegetable room can be greatly improved.

  5th invention can aim at the efficiency improvement of heat-source utilization by providing the heat insulation layer in the outer surface of the evaporating dish of a defrost water evaporator in any one invention of 1st to 4th invention, Since the rise in water temperature can be greatly improved, the defrosting water evaporator can be made compact, and the storage efficiency of the lowermost vegetable room can be greatly improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
Fig.1 (a) is a front view of the refrigerator in Embodiment 1 of this invention, FIG.1 (b) is center sectional drawing.

  In FIG. 1, a compressor 102 is configured in a first machine room 103 which is a space formed in the upper part of the refrigerator main body 101. The structure of the refrigerator main body 101 from the top is the refrigerating room 104, the ice storage room 105 installed in parallel under the refrigerating room 104, the first freezing room 106, and the first freezing room 106. 2 freezer compartments 107, a vegetable compartment 108 configured at the bottom, an evaporator 109 configured substantially rearward of the second freezer compartment 107, and a second configured at the lower back of the refrigerator main body 101. A defrost water evaporation device 110 is provided in the machine room 111. Note that the first freezer compartment 106 may be a switchable storage room such as a refrigeration temperature zone or a fine refrigeration temperature zone, and is not limited to a freezer compartment.

  FIG. 2A is a schematic view of the defrosted water evaporation device 110, and FIG.

  1 and 2, the evaporator 109, the drainage path 202 for leading the drain water 201 of the evaporator 109, the drain pipe 203 for guiding the drain water 201 to the outside, The frost water evaporation device 110 includes an evaporating dish 204 that receives drain water 201 below a drain pipe 203, a heater 205 that is a heating means that contacts the outer surface, a dish shape with a sealed upper surface, and two openings. 206, an air passage 207 formed in the internal space, and a blowing means 208 for forcibly convection of air through the air passage 207.

  Next, the evaporating action of the defrost water evaporator 110 will be described with reference to FIGS. 1 and 2. Although the detailed description of the refrigeration cycle is omitted since it has the same configuration as the conventional one, the evaporator 109 is at a low temperature, and the refrigerator compartment 104, the ice storage compartment 105, the first freezer compartment 106, the second freezer compartment in each storage compartment. When heat is exchanged with the air in the chamber 107 and the vegetable chamber 108, frost is formed on the surface of the evaporator 109. Since the frost accumulates as the operation time of the compressor 102 elapses, the heat source means 213 is appropriately heated in order to remove the frost on the surface of the evaporator 109, the frost is defrosted, and the drain water 201 passes through the drain pipe 203 to evaporate the dish. 204.

  By sealing the upper part of the evaporating dish 204, the air passage 207 has a single air passage configuration passing over the water surface of the drain water 201, and the air speed is greatly increased as compared with the conventional case. By this increase in wind speed, the evaporation performance of the drain water 201 is greatly improved.

  In addition, since the drain water 201 can raise the saturated water vapor pressure of the water by efficiently raising the temperature from the surroundings by the heater 205 of the heat generating means contacting the outer surface of the evaporating dish 204, the evaporation performance is greatly improved. It can be made.

  In the present invention, for example, an aluminum foil heater that can expand the heat transfer area can be used as the heater 205 of the heat generating means. Further, since it is not necessary to lay out the condenser pipe in the refrigeration cycle path, the assemblability can be greatly improved. In addition, although the location where the heater 205 of the heating means abuts on the outer surface of the evaporating dish 204, the drain water 201 accumulates, so that the bottom and then the side are particularly effective.

  As described above, in the refrigerator having the refrigerator compartment 104, the freezer compartment 107 from the top, and the vegetable compartment 108 at the bottom, the compressor 102 is provided at the upper back of the refrigerator main body, and the evaporator 109 is provided at the rear position of the freezer compartment 107. A drainage pipe 203 that guides the drainage path 202 and the drain water 201 to the outside of the refrigerator 109 is disposed below the evaporator 109, and the defrosting water evaporation device 110 is disposed at the lower back of the refrigerator main body, and the outer surface of the evaporation dish 204 of the defrosting water evaporation device 110. By bringing the heater 205 of the heating means into contact with the defrosting water, the defrosting water evaporation device can be made compact, the volumetric efficiency of the vegetable compartment 108 can be greatly increased, and the food storage efficiency of the consumer can be greatly improved. .

  In addition, in this Embodiment, although the lowest step part of the refrigerator was demonstrated as a vegetable room, you may use it as refrigerated storage rooms other than vegetables.

(Embodiment 2)
Fig.3 (a) is the schematic of the defrost water evaporation apparatus 301 in Embodiment 2 of this invention, FIG.3 (b) is the sectional view on the AA line.

  The difference from the first embodiment is that the condenser refrigerant pipe 303 of the heating means connected to the refrigeration system of the main body is brought into contact with the outer surface of the evaporating dish 302 of the defrosting water evaporator 301 of FIG. The condenser refrigerant pipe 303 as the heat generating means generates heat corresponding to the condensation temperature in the refrigeration cycle. As a result, it is possible to raise the water saturation temperature and water vapor pressure by raising the water temperature efficiently and greatly, so that the evaporation performance can be greatly improved. In addition, the energy of the heat source can be saved. Since the condenser refrigerant pipe 303 of the heat generation means does not directly contact the drain water 201, no rust prevention means is required.

  As described above, by bringing the condenser refrigerant pipe 303 of the heat generating means into contact with the outer surface of the evaporating dish of the defrost water evaporator, the water temperature can be increased efficiently, so the defrost water evaporator can be made compact. The volumetric efficiency of the lowermost vegetable compartment 108 can be greatly improved.

(Embodiment 3)
FIG. 4 (a) is a schematic diagram of the evaporating dish 402 of the defrosted water evaporator according to Embodiment 3 of the present invention, and FIG. 4 (b) is a cross-sectional view taken along line AA.

  The second embodiment is different from the second embodiment in that it has an evaporation promoting plate 403 that divides the inside of the evaporating dish 402 in FIG. 4, and the heating means connected to the inner surfaces of the evaporating promoting plate 403 and the evaporating dish 402 from the refrigeration system of the main body. The condenser refrigerant pipe 404 is configured to abut (the abutting portion is a hatched portion in the figure).

  At this time, the condenser refrigerant pipe 404 of the heat generating means can be considered to be a U-turn shape, for example, but can be variously configured and is not limited to this specification. Further, the evaporation promoting plate 403 is preferably made of a metal such as an aluminum plate having excellent heat conduction. As a result, the heat source and water can be brought into direct contact, and the surface area can be improved by the evaporation promoting plate 403, so that the rise in water temperature can be greatly improved. Further, since the evaporating dish 402 is partitioned by the evaporation promoting plate 403, the local variation in the rise of the water temperature is reduced, and the evaporation performance can be further promoted.

  As described above, the evaporation promoting plate 403 that partitions the inside of the evaporating dish 402 of the defrosting water evaporating apparatus is provided, and the surface area where the heat source and water contact is improved by the configuration in which the condenser refrigerant pipe 404 of the heat generating means is in contact. Therefore, the defrosting water evaporator can be made compact, and the storage efficiency of the lowermost vegetable room 108 can be greatly improved.

(Embodiment 4)
FIG. 5 is a schematic diagram of the evaporating dish 502 of the defrosted water evaporating apparatus in Embodiment 4 of the present invention.

  The difference from the second embodiment is that the condenser refrigerant pipe 503 of the heating means is arranged in a spiral shape on the inner surface of the evaporating dish 502 of the defrosting water evaporator, so that the surface area where the water and the heat source come into contact can be improved. The rise in water temperature can be greatly improved.

  As described above, with the configuration in which the condenser refrigerant pipe 503 of the heat generating means is arranged in a spiral shape on the inner surface of the evaporating dish 502 of the defrost water evaporator, it is possible to improve the surface area where the water and the heat source come into contact and obtain high density. Therefore, the defrosting water evaporator can be made compact, and the storage efficiency of the lowermost vegetable compartment 108 can be greatly improved.

  Note that the condenser piping of the heat generating means can be variously configured and is not limited to this specification.

(Embodiment 5)
FIG. 6 is a schematic diagram of an evaporating dish 602 of the defrosted water evaporating apparatus in Embodiment 5 of the present invention.

  The difference from Embodiments 1 to 4 is that the outer surface of the evaporating dish 602 of the defrost water evaporating apparatus is provided with a heat insulating layer 603. This suppresses heat radiation to the outside of the heat source of the heater 205 (not shown) of the heat generating means and the condenser pipes 303, 404, and 503 (not shown) of the heat generating means, and the heat is exclusively drained inside the evaporating dish 602. Since it is supplied to the water 201, the thermal efficiency can be improved.

  As described above, by providing the heat insulating layer 603 on the outer surface of the evaporating dish 602 of the defrosting water evaporator, it is possible to increase the efficiency of use of the heat source and to greatly increase the water temperature, thereby removing the defrosting. The water evaporation apparatus can be further downsized, and the storage efficiency of the lowermost vegetable compartment 108 can be greatly improved.

  As described above, the defrosting water evaporation apparatus for a refrigerator according to the present invention can improve the evaporation performance by greatly improving the rise in water temperature, and can be downsized by increasing the heat source. It can be applied not only to dehumidifiers, air conditioners, and vending machines, but also to a variety of refrigeration equipment or fields that require evaporation of defrost water.

(A) Front view of refrigerator in embodiment 1 of the present invention (b) Central sectional view of the refrigerator (A) Schematic diagram of the defrosting water evaporator of the refrigerator (b) Perspective view of the main part of the defrosting water evaporator (A) Schematic of the defrost water evaporator in Embodiment 2 of this invention (b) The AA sectional view taken on the line (A) Schematic of the evaporating dish of the defrosting water evaporator of the refrigerator in Embodiment 3 of this invention (b) The AA sectional view taken on the line Schematic of the evaporating dish of the defrost water evaporator of the refrigerator in Embodiment 4 of this invention Schematic of the evaporating dish of the defrost water evaporator of the refrigerator in Embodiment 5 of the present invention (A) Sectional view of a conventional refrigerator (b) AA line sectional view Explanatory drawing of refrigeration cycle of conventional refrigerator

Explanation of symbols

101 Refrigerator body 102 Compressor 104 Cold room 105 Ice storage room (freezer room)
106 1st freezer compartment (freezer compartment)
107 Second freezer compartment (freezer compartment)
DESCRIPTION OF SYMBOLS 108 Vegetable room 109 Evaporator 110 Defrost water evaporator 202 Drainage path 203 Drain pipe 204 Evaporating dish 205 Heater (heating means)
206 Opening 207 Air Path 208 Blowing Means 301 Defrost Water Evaporating Device 302 Evaporating Dish 303 Condenser Refrigerant Pipe (Heat Generation Means)
402 Evaporating dish 403 Evaporation promoting plate 404 Condenser refrigerant piping (heating means)
502 Evaporating dish 503 Condenser refrigerant piping (heat generation means)
602 Evaporating dish 603 Heat insulation layer

Claims (5)

  Refrigerator, freezer compartment, and vegetable compartment at the bottom of the refrigerator, a compressor at the upper back of the refrigerator body, an evaporator at the rear of the freezer compartment, and a drainage channel and drain water below this evaporator A drainage pipe that leads to the outside of the refrigerator, a defrosting water evaporation device is arranged at the lower back of the refrigerator main body, and the defrosting water evaporation device has a dish-shaped evaporating dish with a sealed upper surface that receives drain water below the drainage pipe. The evaporating dish comprises a heat generating means, at least two openings, an air passage formed in an internal space, and an air blowing means for forcibly convection of air through the air passage.   2. The refrigerator according to claim 1, wherein the heat generating means of the defrosting water evaporator is a condenser refrigerant pipe and is in contact with the outer surface of the evaporating dish.   The condenser refrigerant pipe of the heat generating means is brought into contact with the inner surface of the evaporating promotion plate and the evaporating dish, having an evaporating promotion plate that partitions the inside of the evaporating dish of the defrosting water evaporator. refrigerator.   2. The refrigerator according to claim 1, wherein the condenser refrigerant pipe of the heating means is arranged in a spiral shape on the inner surface of the evaporating dish of the defrosting water evaporator.   The refrigerator according to any one of claims 1 to 4, wherein an outer surface of the evaporating dish of the defrosting water evaporator is provided with a heat insulating layer.