JP2002130922A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator that can be improved in space utilizing efficiency and cooling efficiency without spoiling sanitation and, at the same time, can prevent a drain from clogging and coolers from being frosted over or getting out of order. SOLUTION: This refrigerator is provided with the coolers 25 and 21 which generate cold air for cooling a cold storage compartment 11 and a freezer compartment 13, a drain pipe 69 which jointly guides drains such as defrosted water, etc., passed through drains hoses 67 and 68 led out of the coolers 25 and 21 to one outlet port 69a, a vapor pan 91 which receives the drain flowing out of the outlet port 69a. This refrigerator is also provided with a compressor 20 positioned below the rear side of the freezer compartment 13, and a condenser 71 which is connected to the compressor 20 through a condensing pipe 93. The vapor pan 91 is positioned below the freezer compartment 13 and the condensing pipe 93 is laid under the vapor pan 91.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having drain means for discharging drain water such as defrost water for a cooler.

[0002]

2. Description of the Related Art A conventional refrigerator having a drain means for extracting defrost water from a cooler is disclosed in, for example, JP-A-11-23716.
No. 4 discloses this. In this refrigerator, a refrigerator compartment is disposed above a freezer compartment, and a refrigerator compartment cooler and a refrigerator compartment cooler for generating cool air are provided behind each of the refrigerator compartments. A machine room is provided in a lower rear portion of the freezing room, and a compressor is arranged in the machine room.

[0003] Drain outlets are respectively formed below the refrigerator cooler and the freezer cooler, and drain hoses are led out of the respective drains. Each drain hose guides drain water such as defrost water from the refrigerator cooler and the freezer cooler to an evaporating dish disposed above the compressor. Then, the drain water led to the evaporating dish is evaporated by heat released from the compressor and discharged to the outside.

[0004]

However, according to the conventional refrigerator described above, since the compressor and the outlet of the drain hose are arranged close to each other, the heat released from the compressor is transmitted through the drain hose. To enter the freezer. Therefore, there is a problem that the cooling efficiency is reduced. Further, when dust in the machine room enters the freezing room via the drain hose, there is a case where the hygiene in the freezing room is impaired, or the dust is deposited in the drain hose to cause a drain clogging.

[0005] Further, the water vapor evaporated in the evaporating dish reaches the freezer cooler via the drain hose, causing frost formation. Electrical components such as a compressor are arranged in the machine room. For this reason, there is also a problem that electric components in the machine room are corroded or short-circuited by the water vapor evaporated in the evaporating dish, thereby causing a failure of the refrigerator.

[0006] Further, since the defrost water in the refrigerator cooler and the freezer cooler flows out from the outlet of each drain hose, it is necessary to increase the area of the evaporating dish in order to reliably catch the respective drain water. . Therefore, there has been a problem that the machine room becomes large and the efficiency of using the space of the refrigerator is poor.

An object of the present invention is to provide a refrigerator capable of improving space utilization efficiency and cooling efficiency without impairing hygiene, and preventing clogging of drains, frost formation of a cooler, and failure.

[0008]

According to the present invention, a plurality of coolers for generating cool air and drain water from at least two or more of the plurality of coolers are combined. It is characterized by comprising drain means for leading to one outlet, and an evaporating dish for receiving drain water flowing out from the outlet. According to this configuration, the drain water such as defrost water from the plurality of coolers is guided to the drain means, and at least two or more merge in the middle of the path, flows out from one outlet, and is captured by the evaporating dish.

The present invention also provides a first and a second method for generating cool air.
It is characterized by comprising a cooler, drain means for merging drain water from the first and second coolers and leading to one outlet, and an evaporating dish for receiving drain water flowing out from the outlet. . According to this configuration, the drain water such as the defrost water of the first and second coolers is guided to the drain means and merges along the route,
It flows out of one outlet and is caught by the evaporating dish.

According to the present invention, in the refrigerator configured as described above, the drain means includes first and second drain hoses for guiding drain water respectively drawn from the first and second coolers, and first and second drains. A drain pipe connected to the hose and detachably formed on the first and second drain hoses is provided. According to this configuration, the first,
The drain water of the second cooler flows through the first and second drain hoses, joins by the drain pipe, flows out of the outlet provided in the drain pipe, and is captured by the evaporating dish.

Further, the present invention is characterized in that in the refrigerator having the above-mentioned structure, the drain pipe is arranged so as to prevent heat from flowing in from the outlet.

According to the present invention, in the refrigerator having the above-mentioned structure, a partition wall for partitioning the machine room disposed behind the evaporating dish from the evaporating dish is provided, and the drain pipe is arranged above the partition wall. It is characterized by.

Further, the present invention is characterized in that in the refrigerator having the above structure, a throttle portion for reducing the flow of heat such as warm air is provided in the drain pipe.

According to the present invention, there is provided a refrigerator having the above-mentioned structure, comprising a compressor disposed behind a storage room, and a condenser connected to the compressor, wherein the evaporating dish is disposed below the storage room. It is characterized by doing. According to this configuration, the evaporating dish is arranged in front of the compressor facing the bottom of the storage chamber, and the outlet of the drain means is arranged away from the compressor.

Further, the present invention is characterized in that in the refrigerator having the above-mentioned structure, a condensing pipe connected to the condenser is provided, and the condensing pipe is arranged below the evaporating dish. According to this configuration, the evaporation of the drain water accumulated in the evaporating dish is promoted by the heat radiation of the condensation pipe.

The present invention also provides a refrigerator having the above structure, further comprising a condenser blower for taking in outside air, and after cooling the condenser and the compressor with the taken-in air, the air flows through the upper surface of the evaporating dish. It is characterized by being discharged. According to this configuration, the air taken in by the blower for the condenser is guided to the condenser and the compressor to cool them, and then discharged to the outside together with the water vapor evaporated through the upper surface of the evaporating dish.

Further, the present invention is characterized in that in the refrigerator having the above-mentioned structure, air circulated by the condenser blower is discharged from the front of the refrigerator.

[0018] The present invention also provides a compressor disposed behind the storage room, a plurality of coolers for generating cool air, an evaporating dish disposed below the storage room, and drain water of the cooler. Drain means for leading to the evaporating dish. According to this configuration, the evaporating dish is arranged in front of the compressor facing the bottom surface of the storage chamber, and the outlet of the drain means is arranged away from the compressor. Drain water such as defrost water from the cooler is guided to the front of the compressor by the drain means, flows out of the outlet, and is captured by the evaporating dish.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a side sectional view and a front view, respectively, showing a refrigerator according to an embodiment. Refrigerator 1 has an inner box 2b disposed inside an outer box 2a covering the outer surface.
Insulation material 2c such as urethane foam is placed in the gap between
Is filled. The outer box 2a is composed of a cabinet 2d having a side surface and an upper surface integrated with a back plate 2 on the rear side.
e.

The interior of the refrigerator 1 is divided into a refrigerator compartment 11, a vegetable compartment 12, and a freezer compartment 13 in this order from the top. Vegetable room 1
2 and the freezing compartment 13 are partitioned by a partition frame 17 and a partition plate 19 made of a heat insulating material. The freezing compartment 13 is further partitioned into an upper portion and a lower portion by a partition frame 18 made of a heat insulating material. The refrigerator compartment 11 and the vegetable compartment 12 are partitioned by a partition frame 16 made of a heat insulating material and partition plates 31 and 32 made of a resin molded product.

At the lower part of the refrigerator compartment 11 is provided an ice compartment 14, which is an isolation compartment partitioned by a partition plate 46. The refrigerator compartment 11 is provided with a plurality of shelves 45 on which foods and the like are placed. The front surface of the refrigerator compartment 11 can be opened and closed by a rotary heat-insulating door 3. The front of the vegetable compartment 12, the upper part of the freezer compartment 13 and the lower part of the freezer compartment 13 can be opened and closed by sliding heat insulating doors 4, 5, 6, respectively.
5, 56 can be drawn out.

A compressor 20 is disposed at the rear of the freezing compartment 13 via a heat insulating layer (2c). The compressor 20 is connected to coolers 21 and 25 disposed in cool air passages 23 and 27. A refrigeration cycle is configured.

FIG. 3 shows an example of a circuit diagram of a refrigeration cycle. A condenser 71 is connected to the compressor 20, and the refrigerant passes through the capillary tubes 72, 73 and the cooler 25 as indicated by an arrow A1. A first refrigeration cycle returning to the compressor 20 is configured. Further, a second refrigeration cycle in which the refrigerant returns to the compressor 20 through the capillary tubes 72 and 74 and the cooler 21 as indicated by an arrow A2 is configured.

The first refrigeration cycle and the second refrigeration cycle are configured in parallel, and when the on-off valve 78 is opened, the first refrigeration cycle and the second refrigeration cycle are executed simultaneously. Therefore, cooling by the coolers 21 and 25 is performed, and the blower 2
The drive of 2 and 26 sends out cold air to the freezer compartment 13 and the refrigerator compartment 11.

When the on-off valve 78 is closed, the second refrigeration cycle is executed, cooling is performed by the cooler 21, and only the freezing chamber 13 is cooled by driving the blower 26. A dedicated cooler 2 for each of the refrigerator compartment 11 and the freezer compartment 13
Because of the provision of 5, 21, the cooling temperature of the cool air passing through the cooler 25 is set high, so that dew condensation and icing in the cooler 25, the cooling plate 42 and the refrigerator compartment 11 can be suppressed. . Further, when the indoor temperatures of the refrigerator compartment 11 and the vegetable compartment 12 are within a predetermined range, the compressor 20 is used only for cooling the refrigerator compartment 13 so that the refrigerating capacity of the refrigerator compartment 13 can be further increased. .

Further, since the coolers 21 and 25 are arranged in parallel, the connection of the piping through which the refrigerant flows can be simplified. That is, many of the welding locations can be provided in the machine room 30 in which the compressor 20 is disposed, so that productivity and maintainability are improved. Reference numerals 75 and 76 denote temperature sensors for detecting the temperatures in the refrigerator compartment and the freezer compartment.
, The compressor 20 is driven and the on-off valve 78 is opened and closed. 77 is a condenser 71
Is a blower for a condenser that cools at least a part of the condenser.

1 and 2, a defrost heater 6 for defrosting the coolers 21 and 25 is provided below the coolers 21 and 25.
1, 62 are provided. 63 and 64 are drain receiving members that receive defrost water. A drain hose 67 is connected to a lower portion of the drain receiving member 63. A drain hose 68 is connected to a lower portion of the drain receiving member 64.

As shown in FIG. 4, the lower portions of the drain hoses 67 and 68 have openings 83a and 83b of the bottom plate 83, respectively.
To the machine room 30 through the drain pipe 69
Are connected by The bottom plate 83 is formed continuously with the back plate 2 e and covers the outside of the bottom surface of the freezing compartment 13. Outlet 69a at the end of drain pipe 69
Is guided above an evaporating dish 91 arranged facing the bottom of the freezer compartment 13.

The cooler 21 is disposed in the cool air passage 23, and the cool air passage 23 is formed by the inner box 2b and the evaporation cover 33 made of a resin molded product. Blower 22
Is disposed above the cooler 21 in the cool air passage 23.
The cool air passage 23 communicates with the freezer compartment 13 through discharge ports 13a, 13c and a return port 13b provided on the back plate 33a of the freezer compartment 13.

The space between the evaporator cover 33 and the back plate 33a is formed by a protruding wall 33c protruding from the evaporator cover 33.
(See FIG. 4). Thereby, the discharge port 1
The 3a, 13c side and the return port 13b side are separated.

The cooler 25 is arranged in the cool air passage 27, and the blower 26 is arranged above the cooler 25. The lower part of the cold air passage 27 is formed by the back plate 35 of the ice temperature chamber 14 and the inner box 2b. The upper part of the cool air passage 27 is provided with a cooling plate 42 and an inner box 2b,
7a and the inner box 2b. The partition wall 27a separates the cooler 25 side from the pressure chamber 27b, and the blower 26 is attached to the partition wall 27a. The cooling plate 42 is formed by sheet metal processing a metal plate such as aluminum or stainless steel.

A ceiling cool air passage 57 communicating with the cool air passage 27 is provided at a ceiling portion of the refrigerator compartment 11.
Reference numeral 7 is formed by an upper plate 43 made of a resin molded product and the inner box 2b. A discharge port 43a is provided at a front portion of the upper surface plate 43. An illumination lamp (not shown) covered with a transparent illumination cover 53 is provided at the center of the ceiling of the refrigerator compartment 11.
The inside of the refrigerator compartment 11 is illuminated.

A water supply pump 66 for supplying water to the ice maker 70 is disposed on the left side of the cool air passage 27, and a water supply tank (not shown) is set in front of the water supply pump 66. An ice temperature duct 60 that branches from the discharge side of the blower 26 and guides cool air to the back of the ice temperature chamber 14 is provided on the right side of the cool air passage 27.

Also, behind the vegetable compartment 12, a compressor 2
0, a storage box 58a for storing an electric circuit 58 for driving and controlling the blowers 23 and 26 and the like is provided.
The back of the storage box 58a is closed by an electrical cover 58b, and the periphery of the storage box 58a is covered by a heat insulating material 2c. The heat insulating material 2c blocks heat generated by the electric circuit 58.

The upper and lower portions of the electrical cover 58b are bent to form gaps 58c and 58d between the electrical cover 58b and the storage box 58a. The outside air enters the storage box 58a by the gaps 58c and 58d to cool the electric circuit 58, and the outside air temperature can be accurately measured by the temperature sensor provided in the electric circuit 58. In addition, the bent portion of the electrical cover 58b and the upper and lower ends of the storage box 58a are arranged so as to overlap in the front-back direction. Thereby, invasion of water or the like from the outside into the storage box 58a is reduced.

The upper and lower surfaces of the storage box 58a are formed to be inclined. Thereby, the inner box 2b is inclined, and the cool air passing through the cool air passages 27 and 23 smoothly changes the direction,
The flow resistance is reduced by suppressing the generation of vortices. In addition, the water that has entered the storage box 58a can be easily drained from the gap 58d.

FIG. 5 is a plan view of the lower portion of the refrigerator 1. FIG. In the lower part of the refrigerator 1, a partition wall 88 divides the lower part of the freezer compartment 13 and the machine room 30 back and forth. The lower part of the freezer compartment 13 is further partitioned left and right by a partition wall 89. The metal evaporating dish receiving plate 92 arranged on one side is a bottom plate 95.
(All shown in FIG. 4), and the evaporating dish receiving plate 9
The evaporating dish 91 is placed on the second tray 2.

The machine room 30 is further divided left and right by a partition wall 90. A condenser blower 77 is attached to the partition wall 90. The compressor 20 is supported on the right side of the machine room 30 by a compressor mount 94. Partition wall 8
A condenser 71 is disposed to the left of 9, 90. The condenser 71 is configured such that fins penetrate through an opening provided in the partition wall 88. A part of the condenser 71 is supported by the compressor mount 94 and the bottom plate 95 of the refrigerator 1.

On the lower surface of the evaporating dish receiving plate 92, the compressor 20
A condensing pipe 93 connected to the discharge pipe 20a is disposed. A condenser 71 is connected to the compressor 20 via a condensation pipe 93.

A concave portion 88a (see FIG. 4) is provided on the upper portion of the partition wall 88, and a concave portion 83c (see FIG. 4) is also provided on the bottom plate 83 at a portion corresponding to the concave portion 88a.
The drain pipe 69 is inserted between the concave portions 88a and 83c, guided from the machine room 30 side to below the freezing room 13, and
9 a is disposed above the evaporating dish 91.

Since the drain pipe 69 passes above the partition wall 88, the assembling and detachment of the drain pipe 69 can be facilitated. And the flow of heat can be reduced. The drain pipe 69 and the recesses 88a, 83c
Is sealed with a sealing material.
Also, the lower surfaces of the partition walls 88, 89, 90 and the compressor mount 9
4. The bottom plate 95 is sealed with each other.

The drain pipe 69 has a drain receiving member 63,
Drain hoses 67, 68 connected to the lower end 64 are connected to lower ends. For this reason, drain water such as defrost water obtained by melting frost formed on the coolers 21 and 25 by the defrost heaters 61 and 62 flows from the drain receiving members 63 and 64 to the drain hose 67,
After passing through 68, they merge at a drain pipe 69. Then, it is guided from the outlet 69a to the evaporating dish 91 and stored therein.

Since the evaporating dish 91 is disposed below the freezing compartment 13, the thickness can be reduced and the opening area can be increased. Thereby, the drain water can be easily evaporated, and the space of the refrigerator 1 can be effectively used.

Cabinet 2d, back plate 2e
A connecting pipe (not shown) similar to the condensing pipe 93 is attached to the heat insulating material 2c side of the bottom plate 83 with a tape made of aluminum foil or the like, and connected to the condenser 71. These connecting pipes are similar to the condensing pipe 93 and assist the condenser 71 to condense the refrigerant.

The refrigerant flowing out of the discharge pipe 20a of the compressor 20 flows from the condensing pipe 93 to the connecting pipe on the back plate 2e. After that, it flows from the connecting pipe on the bottom plate 83 to the condenser 71, and flows through the connecting pipe on the cabinet 2d. During this time, the refrigerant is cooled under high pressure to change from a gas refrigerant to a liquid refrigerant, and reaches a capillary tube 72 (see FIG. 3) through a dryer (not shown).

When the condenser blower 77 is operated, air sucked from the left front of the partition wall 89 passes between the bottom plate 95 and the bottom plate 83. The air flows into the machine room 30 through an opening (not shown) of the partition wall 88 and reaches the blower 77 for the condenser. During this time, the condenser 71
To cool the refrigerant passing through the condenser 71 to assist liquefaction.

Then, the air flows into the machine room 30 on the compressor 20 side through the condenser blower 77. Thus, after the heat is taken from the compressor 20 and cooled, the heat reaches the evaporating dish 91 through an opening (not shown) of the partition wall 88. At this time, if the drain water is accumulated in the evaporating dish 91, the evaporation of the accumulated drain water is promoted by the flow of the heated air.

The air containing water vapor is heated in the state of the bottom plate 95.
And between the bottom plate 83 and the outside from the right front of the partition wall 89. Thereby, the warm air containing water vapor does not flow into the machine room 30, and it is possible to prevent corrosion and short circuit of the electrical components arranged in the machine room 30 such as the compressor 20 due to moisture.

Further, warm air is exhausted to the front of the refrigerator 1,
Since the air is not discharged from the back of the refrigerator 1 as in the related art, a rise in temperature due to accumulation of warm air between the back of the refrigerator 1 and the wall behind the refrigerator 1 is suppressed. Thereby, the cooling efficiency can be improved by suppressing a decrease in the heat radiation efficiency of the compressor 20 and the condenser 71.

Further, as the electric components and the circuit board mounted on the electric circuit 58 (see FIG. 1), even inexpensive ones having a low allowable limit temperature can be used, and the cost can be reduced. When the same electric components as those in the related art are used, the margin for the allowable limit temperature increases, and the reliability can be improved.

The machine room cover 36 covering the back of the machine room 30
Is provided with an opening 36a. Since the opening 36 a is formed on the suction side of the condenser blower 77, the outside air flows from the outside of the refrigerator 1 into the machine room 30 by driving of the condenser blower 77. Thereby, the cooling of the heating elements arranged in the machine room 30 such as the compressor 20 and the condenser 71 can be promoted.

The opening 36a bends and covers a part of the machine room cover 36 and opens downward (see FIG. 4).
By doing so, the strength reduction due to the opening is reinforced, and intrusion of water or the like into the machine room 30 is prevented. Further, heat radiation from the compressor 20 and the condenser 71 to the rear side is suppressed.

Since the temperature of the condensation pipe 93 is high (for example, about 80 ° C.), the drain water of the evaporating dish 91 is heated via the metal evaporating dish receiving base 92, and the evaporation of the drain water is promoted. . Therefore, the condensing pipe 93 is cooled not only by the air circulated by the condenser blower 77 but also by the heat of vaporization of the drain water. The refrigerant in the connecting pipe provided on the bottom plate 83 is also supplied to the condenser blower 77.
Cooled by the flow of air.

Further, the opening 36a, the low-pressure part of the machine room 30 (the suction side of the condenser blower 77), and the electrical equipment cover 58b
A communication path that communicates with the space 58d (see FIG. 1) and the inside of the storage box 58a may be provided. In this way, the outside air is sucked from the gap 58c by the driving of the condenser blower 77. The sucked outside air flows into the machine room 30 through the inside of the storage box 58a, and the electric circuit 58 is forcibly cooled. Therefore, it is possible to further reduce the cost or improve the reliability of the electric components and the circuit board mounted on the electric circuit 58.

Also, as shown in FIG.
Since the electric circuit 58 is disposed behind the housing 2, the distance between the storage box 58a and the machine room 30 is short, and the length of the communication path can be shortened. Therefore, the ventilation resistance of the communication passage is small, the cross-sectional area of the communication passage can be reduced, and even if the heat generation amount of the electric circuit 58 that controls the rotation speed of the compressor 20 by frequency conversion or the like increases, The electric circuit 58 can be sufficiently cooled by using the small condenser blower 77 used. The communication passage may be formed by providing a duct on the back of the refrigerator 1, and the heat insulating material 2c
As long as the heat insulation is ensured, the heat insulating material 2c may be provided so as to penetrate.

It is more desirable to arrange the connecting pipe provided on the back plate 2e above the storage box 58a storing the electric circuit 58. That is,
Since the heat released from the connecting pipe rises, it is possible to further suppress a rise in temperature around the storage box 58a and the electrical cover 58b.

Further, since the electric circuit 58 is disposed behind the vegetable compartment 12, the electrical components connected to the electric circuit 58 are vertically dispersed. That is, the compressor 2
0, on-off valve 78 (see FIG. 3), defrost heater 62, blower 22, condenser blower 77, temperature sensor 76 (see FIG. 3), and electric components such as ice maker 70 are arranged below electric circuit 58. You.

Electrical components such as a water supply pump 66, a defrost heater 61, a blower 26, a temperature sensor 75 (see FIG. 3), and an illumination lamp are arranged above the electric circuit 58. This allows
The bundle of wires can be made thinner than in a case where the electric circuit 58 is disposed above and the wires connected to the respective electrical components are drawn out to one side below. For example, when the wiring bundle is pulled out to one side below, the diameter of the bundle of wires becomes 20 mm, and when the wiring bundle is vertically dispersed, the diameter can be made 15 mm. Therefore, the work of incorporating the bundle of wires is facilitated, and the assemblability and the reliability of the finish are improved.

At the time of assembling, the wiring is temporarily fixed to the heat insulating material 2c side of the inner box 2b with a tape or the like, and then the gap between the inner box 2b and the outer box 2a is filled with a heat insulating material 2c such as urethane foam. At this time, the area where the wiring bundle is thin and occupied by the wiring material is small in the heat insulating material 2c. For this reason, the possibility of obstructing the flow when urethane or the like foams is reduced, and the generation of voids (gas spaces) can be reduced. Therefore, it is possible to prevent the heat insulation from being deteriorated. Further, the heat insulating property is prevented from deteriorating even when the area of the wiring material having high thermal conductivity is small.

Also, in the present embodiment, the length of the wiring connecting the lower electric component and the electric circuit 58 is shorter than in the case where the wiring is drawn out from the upper electric circuit 58 to one of the lower parts. The lengths of the wires connecting the upper electric components and the electric circuit 58 are substantially equal. Further, the length of the wiring connecting the illumination lamp and the electric circuit 58 becomes longer.

Accordingly, since the number of wires connected to the illumination lamp is small (for example, four wires), the distance of the entire wires is reduced.
Thereby, the cost of the wiring member can be reduced. If the defrost heater 61, the cooler 25, and the blower 26 are arranged further below, the length of the wiring can be further reduced, and the cost can be further reduced.

When a power cord outlet 58e is provided above the electrical cover 58b, a power cord (not shown) is pulled out from approximately the center of the back of the refrigerator 1. Accordingly, the distance to the household outlet becomes substantially equal regardless of whether the household outlet is installed above or below.

Therefore, the length of the power cord can be reduced as compared with the case where the power cord is pulled out from above the refrigerator 1. Accordingly, it is possible to reduce the cost, and it is possible to reduce the slack of the power cord when the household outlet is arranged upward, thereby preventing the power cord from being damaged.

In FIG. 4, as described above, the drain hose 67 connected to the lower portion of the drain receiving member 63 (see FIG. 1) passes through the heat insulating material 2c and from the opening 83a of the bottom plate 83 into the machine room 30. Drawn out. The drain hose 68 connected to the lower part of the drain receiving member 64 passes through the heat insulating material 2c and is drawn out of the opening 83b of the bottom plate 83 into the machine room 30. The drain hoses 67 and 68 are connected to the drain pipe 69.

The drain water passing through the drain hoses 67 and 68 is joined by a drain pipe 69 and led to an outlet 69 a of the drain pipe 69. The drain pipe 69 is formed to extend forward, and is inclined so that the outflow port 69a side becomes lower. Then, the drain water is supplied to the evaporating dish 9 in front of the compressor 20.
1 is discharged. Moreover, the inclination of the drain pipe 69 is greater near the outlet 69a than near the connection with the drain hoses 67 and 68. Thereby, the drain water is easily discharged, and the flow of the drain water is not hindered even if the opening area of the outlet 69a is reduced.

Therefore, since the outlet 69a and the compressor 20 are arranged apart from each other, a decrease in the cooling efficiency caused by the heat released from the compressor 20 flowing into the freezing chamber 13 through the outlet 69a. Can be prevented. Further, since the air flows from the rear to the front by the condenser blower 77 to the outlet 69a that opens forward, the warm air, the drain water vapor, and the
It becomes difficult for the dust inside to flow in from the outlet 69a. As a result, the cooling efficiency is further prevented from lowering, and the cooling device 2
1 and the drain clogging of the drain pipe 69 can be prevented.

Since the drain water flows from the drain hoses 67 and 68 and joins the drain water from one outlet 69a, the opening area through which the warm air flows in is small. The inflow can be further reduced, and the space for the drain water discharge section can be reduced. The drain pipe 69 is formed with a throttle portion 69b having a narrowed end, and the opening area of the outlet 69a is smaller than the flow area of the drain hoses 67 and 68. Therefore, the inflow of warm air and the like can be further reduced.

Since the drain hoses 67, 68 and the drain pipe 69 are made of different members, the drain pipe 69 can be easily removed. Accordingly, it is possible to easily clean the deposit of dust that has entered the drain pipe 69, and it is possible to reduce drain clogging in the drain hose 69.

The flow area of the drain pipe 69 is increased,
A filter may be provided in the drain pipe 69. In this case, dust that has entered from the outlet 69a is captured by the filter and is washed away by the drain water, so that it is possible to further prevent the occurrence of drain clogging.

In the refrigerator 1 having the above configuration, the compressor 20
Is cooled by the cooler 21 by the driving of the blower 2.
2 is driven, the air in the freezing room 13 returns to the return port 13b.
From the cooling air passage 23. The air is cooled by exchanging heat with the cooler 21 and discharged to the freezing compartment 13 through the discharge ports 13a and 13c. Thereby, the inside of the freezing room 13 is cooled to, for example, −20 ° C.

When the blower 26 is driven, the air in the vegetable compartment 12 is sucked into the cool air passage 27 from the return port 12b.
The air is cooled by exchanging heat with the cooler 25, and is cooled by the cool air passage 2.
7 and is discharged into the refrigerator compartment 11 from the discharge port 43a.

Since the cooling plate 42 is made of metal, part of the cold heat of the cold air flowing through the cold air passage 27 is
Is released as cold heat into the refrigerator compartment 11 through Thereby, the inside of the refrigerator compartment 11 is efficiently and uniformly cooled to, for example, 3 ° C. by the cool heat discharged from the cooling plate 42 and the cool air discharged from the discharge port 43a. The cooling plate 42 may be any material having high thermal conductivity, and may be a ceramic material or a resin material impregnated with a metal filler.

The cool air in the refrigerator compartment 11 passes through the front surface of the shelf 45 and is discharged forward into the vegetable compartment 12 through the communication passage 12a. Then, the inside of the vegetable compartment 12 is cooled down from the front of the storage container 54, and the cool air is circulated from the return port 12b to the cool air passage 27. The cool air discharged from the discharge port 43a into the refrigerator compartment 11 is deprived of cold heat by the food or the like before flowing into the vegetable compartment 12. Thereby, the temperature of the cold air circulating in the refrigerator compartment 11 rises, and the raised cold air flows into the vegetable compartment 12, so that the interior of the vegetable compartment 12 is cooled to, for example, 5 ° C.

Further, the cool air sent from the blower 26 is immediately discharged from the discharge port 60 a through the ice temperature duct 60 to the ice temperature chamber 1.
4 is discharged in an appropriate amount. Thereby, the temperature in the ice greenhouse 14 can be maintained at, for example, -1 ° C. The temperature of the ice greenhouse 14 is reduced to 0 ° C. by reducing the amount of cold air discharged inside.
When it is near, it becomes a chilled room, and when the amount of cold air is further reduced and the room temperature is around 5 ° C., it becomes a vegetable room. The amount of cool air can be changed by opening and closing a door pivotally supported so as to cover the discharge port 60a.

According to this embodiment, the drain water from the coolers 21 and 25 is merged to discharge the drain water from one outlet 69a to the evaporating dish 91, and the outlet 69a and the compressor 20 are separated from each other. Be placed. Accordingly, since the outlet is integrated and the opening area is reduced, it is possible to prevent a decrease in cooling efficiency due to the heat released from the compressor 20 flowing into the freezing chamber 13 through the outlet 69a. .
Further, the drainage drainage point is determined by the outlet 69 a, the drainage point is specified, and the drainage water can be reliably collected by the evaporating dish 91.

An outlet 69 opening forward.
With respect to a, since the air is circulated from the rear to the front by the condenser blower 77, the circulating warm air, the water vapor of the drain water, and the dust in the machine room 30 are less likely to flow in from the outlet 69a. Thereby, the cooling efficiency can be further prevented from lowering, and frost formation on the cooler 21 can be prevented.

In the present invention, the refrigerator compartment 11 and the vegetable compartment 12 are cooled by the same cooler 25, but the refrigerator compartment and the freezer compartment may be cooled by the same cooler. . Further, as the coolers 21 and 25, an evaporator, a cooler using a Peltier method, or a cooler using another cooling method can be used.

Further, the cooling plate 42 may be formed of a resin molded product usually used for forming a back wall of the refrigerator compartment 11. By doing so, the thermal conductivity of the cooling plate 42 is reduced, and the effect of uniformly cooling the refrigerator compartment 11 is reduced.
Otherwise, the same effects as above can be obtained.

[0079]

According to the present invention, the drain water from at least two or more of the plurality of coolers is merged and the drain water is discharged from one outlet to the evaporating dish. The drainage point is determined as one, the drainage point is specified, and the drainage water can be reliably collected by the evaporating dish.

Further, since the outlet is integrated and the total opening area is reduced, the heat released from a heat source such as a compressor can be reduced.
It is possible to reduce the inflow of steam, dust in the machine room, and the like from the outlet through evaporation of the drain water accumulated in the evaporating dish. Therefore,
It is possible to suppress a decrease in cooling efficiency due to inflow of heat, frost formation of a cooler due to inflow of steam, and deterioration of hygiene in the storage room due to inflow of dust.

Further, according to the present invention, by providing the drain hose with the drain pipe detachably provided, the drain water can be easily joined, and the deposition of dust entering the drain pipe can be easily cleaned. Therefore, drain clogging in the drain hose can be reduced.

Further, according to the present invention, since the drain pipe is arranged so as to prevent the inflow of heat, the inflow of heat from the outlet can be further reduced, and the decrease in cooling efficiency can be reduced.

Further, according to the present invention, since the drain pipe is disposed above the partition wall, assembly and detachment of the drain pipe can be facilitated, and the evaporating dish and the machine chamber are reliably separated from each other and the flow is ensured. The inflow of dust and heat from the outlet can be reduced.

Further, according to the present invention, since the throttle portion is provided in the drain pipe, the inflow of warm air and the like is reduced, and a decrease in cooling efficiency can be prevented.

Further, according to the present invention, since the evaporating dish is arranged below the storage chamber, the opening area of the evaporating dish can be increased in a small space, the space efficiency is improved, and the drain accumulated in the evaporating dish is improved. The water can evaporate quickly. Further, since the evaporating dish is arranged in front of the compressor, the outlet of the drain means is arranged at a distance from the compressor, and the inflow of the heat discharged from the compressor from the outlet can be further reduced.

Further, according to the present invention, since the condensing pipe is arranged below the evaporating dish, the heat of the condensing pipe can promote the evaporation of the drain water stored in the evaporating dish, and the heat of vaporization for the evaporation of the condensing pipe can be promoted. Cooling can be promoted.

According to the present invention, after the condenser and the compressor are cooled by the air taken in by the blower for the condenser, the air is discharged through the upper surface of the evaporating dish. The air heated by the heat of the compressor passes through the upper surface of the evaporating dish and can promote the evaporation of the drain water. Further, since the air is circulated and discharged to the outside of the refrigerator, if the outlet is opened downstream of the flow of the air, the inflow of warm air from the outlet can be suppressed.

Further, according to the present invention, by performing the exhaust from the front, a rise in the temperature at the back of the refrigerator is suppressed, and a decrease in the radiation efficiency of the compressor and the condenser arranged on the back side is suppressed, thereby improving the cooling efficiency. And the reliability of the electrical component can be improved. Further, the warm air containing water vapor does not flow into the machine room disposed on the rear side of the refrigerator, and thus corrosion and short circuit due to moisture of electrical components disposed in the machine room such as the compressor can be prevented.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a refrigerator according to an embodiment of the present invention.

FIG. 2 is a front view showing the refrigerator according to the embodiment of the present invention.

FIG. 3 is a circuit diagram showing a cooling cycle of the refrigerator according to the embodiment of the present invention.

FIG. 4 is a plan view showing a machine room portion of the refrigerator according to the embodiment of the present invention.

FIG. 5 is a side view showing a machine room portion of the refrigerator according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 2a Outer box 2b Inner box 2c Insulation material 11 Refrigerator room 12 Vegetable room 13 Freezer room 20 Compressor 21, 25 Cooler 22, 26 Blower 30 Machine room 36 Machine room cover 36a Opening 58 Electric circuit 61, 62 Defrosting Heater 63, 64 Drain receiving member 67, 68 Drain hose 69 Drain pipe 69a Outlet 71 Condenser 77 Blower for condenser 88, 89, 90 Partition wall 91 Evaporating dish 93 Condensing pipe

Claims (11)

[Claims] 1. A plurality of coolers for generating cool air, drain means for joining drain water from at least two or more coolers of the plurality of coolers and leading them to one outlet, and flowing out from the outlet A refrigerator comprising: an evaporating dish for receiving drain water. 2. A first and second cooler for generating cool air, drain means for joining drain water from the first and second coolers and guiding the same to one outlet, and a drain flowing from the outlet. A refrigerator comprising an evaporating dish for receiving water. 3. The drain means connects first and second drain hoses with first and second drain hoses for guiding drain water respectively drawn from the first and second coolers, and connects the first and second drain hoses. The refrigerator according to claim 2, further comprising a drain pipe detachably formed on the two drain hoses. 4. The refrigerator according to claim 3, wherein the drain pipe is arranged so as to prevent heat from flowing from the outlet. 5. A partition wall for separating a machine room disposed behind the evaporating dish from the evaporating dish, and the drain pipe is arranged above the partition wall. Item 5. The refrigerator according to Item 4. 6. The refrigerator according to claim 3, wherein a throttle portion for reducing inflow of heat such as warm air is provided in the drain pipe. 7. The apparatus according to claim 1, further comprising a compressor disposed behind the storage chamber, and a condenser connected to the compressor, wherein the evaporating dish is disposed below the storage chamber. ~
The refrigerator according to claim 6. 8. The refrigerator according to claim 7, further comprising a condensing pipe connected to the condenser, wherein the condensing pipe is arranged below the evaporating dish. 9. A condenser blower for taking in outside air,
9. The cooling device according to claim 7, wherein after cooling the condenser and the compressor with the taken-in air, the air flows through an upper surface of the evaporating dish and is discharged.
A refrigerator according to claim 1. 10. The refrigerator according to claim 9, wherein air circulated by the condenser blower is discharged from the front of the refrigerator. 11. A compressor located behind the storage compartment;
A refrigerator comprising: a plurality of coolers for generating cool air; an evaporating dish disposed below the storage chamber; and drain means for guiding drain water of the cooler to the evaporating dish.