JP2001099554A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a refrigerator in which warming in the machine room and dissipation of steam from an evaporation pan can be carried out smoothly. SOLUTION: The refrigerator 1 has a machine room 41 at a lower section of a heat insulation box 6 in which a compressor and an evaporation pan condenser 83 constituting a refrigeration cycle are disposed. An evaporation pan 90 receiving drains from the cooler in the refrigeration cycle is mounted on the evaporation pan condenser. A kick plate 82 is fixed to the heat insulation box such that the front of the machine room is closed and an air inlet 101 is made in the upper surface of the kick plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator in which a machine room is formed below a heat insulating box, and a compressor for a refrigerating cycle, a condenser for an evaporating dish, and the like are installed therein.

[0002]

2. Description of the Related Art Conventionally, this kind of household refrigerator is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-338681 (F25D23 / 00).
As shown in the figure, a heat insulation box body in which a foam insulation material such as foamed polyurethane is filled by an in-situ foaming method between an outer box made of a steel sheet and an inner box made of a hard resin, is formed. ), A freezing room, a refrigerator room, a vegetable room, and the like are configured. A cooler is installed behind the freezing room, and the cool air cooled by the cooler is circulated to each room to cool to a predetermined temperature.

[0003] Further, a machine room is formed at the lower part of the heat insulating box, and a compressor and a condenser constituting a refrigeration cycle together with the cooler and a blower for air-cooling these are installed in the machine room. Have been. Then, while the compressor is operating, the blower is also operated, and the air is cooled by ventilating the compressor and the condenser. In addition, an evaporating dish that receives drain water from the cooler is placed in the machine room,
A condenser for an evaporating dish is provided below the evaporating dish, and heat dissipation from the condenser promotes evaporation of drain water in the evaporating dish.

Further, in order to prevent noise of a compressor or a blower, or to meet a design requirement, for example, Japanese Unexamined Patent Publication No.
A kick plate is attached as in JP-A 1-1101568 (F25D23 / 00). Then, outside air is sucked into the machine room by a blower from an intake port formed in the kick plate.

[0005]

However, since the conventional kick plate has an intake port formed on the lower surface thereof, when the blower normally operated in synchronization with the compressor is stopped, the steam rising from the evaporating dish is stopped. There was a problem that it became difficult to leak.

The present invention has been made to solve the above-mentioned conventional technical problem, and provides a refrigerator capable of smoothly discharging warm air in a machine room and vapor from an evaporating dish. is there.

[0007]

In the refrigerator of the present invention, a machine room is formed below a heat insulating box, and a compressor and an evaporating dish condenser constituting a refrigeration cycle are installed in the machine room. An evaporating dish for receiving drain water from the cooler of the refrigeration cycle is mounted on the condenser, and a kick plate attached to an insulated box so as to close the front of the machine room is provided. A through hole is formed on the upper surface of the kick plate.

[0008] A refrigerator according to a second aspect of the present invention is characterized in that a blower for ventilating the inside of the machine room is provided.

A refrigerator according to a third aspect of the present invention is provided with a door for opening and closing the front opening of the heat-insulating box in each of the above inventions, the kick plate is disposed below the door, and the through-hole is formed in the door. Are located in the lower projection plane of

[0010] A refrigerator according to a fourth aspect of the present invention is characterized in that the refrigerator according to the third aspect further comprises a container which can be pulled out into the heat-insulating box together with the door, and the through-hole is located inside the outer edge of the container. .

According to a fifth aspect of the present invention, in the refrigerator according to the third or fourth aspect, the kick plate is made of a hard synthetic resin, and a mold for forming the kick plate is divided in the opening direction of the through hole. Features.

According to the present invention, a machine room is formed below the heat insulating box, and a compressor and an evaporating dish condenser constituting a refrigeration cycle are installed in the machine room. In a refrigerator comprising an evaporating dish for receiving drain water from a cycle cooler, a kick plate attached to a heat insulating box so as to close the front of the machine room is provided, and a through hole is formed on the upper surface of the kick plate. With such a configuration, particularly when a blower that ventilates the inside of the machine room is provided as in claim 2, when the blower is stopped, warm air in the machine room easily flows out of the through hole of the kick plate.

Thus, the heat radiation of the condenser for the evaporating dish is also facilitated. In addition, since the steam evaporated from the evaporating dish also easily flows out, the treatment capacity of the drain water is improved.

According to a third aspect of the present invention, when the kick plate is disposed below the door that opens and closes the front opening of the heat insulating box so that the front opening can be opened and closed, and the through-hole is located in the lower projection plane of the door,
The through holes formed on the upper surface of the kick plate are hard to see from the outside, and the appearance is improved. Furthermore, in the case where a container which can be pulled out into the heat insulating box together with the door is provided as described in claim 4, if the through hole is located inside the outer edge of the container, the through hole remains open even when the door is opened. Becomes concealed by the container.

According to the fifth aspect of the present invention, the kick plate is made of a hard synthetic resin, and the mold for molding the kick plate is divided in the direction of the opening of the through hole. Since the molding method is the same as that of the door cap located on the upper side of the door, the distance between the kick plate upper surface and the door lower surface in the state of being attached to the heat insulating box is made uniform. As a result, the through hole of the kick plate can be securely hidden by the door.

[0016]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a refrigerator 1 to which the present invention is applied, FIG. 2 is a longitudinal side view of the refrigerator 1, FIG. 3 is an exploded perspective view of a back plate 49 and a back heat insulating material 50 of the refrigerator compartment 11 of the refrigerator 1, and FIG. FIG. 5 is a sectional plan view of the refrigerator compartment 11 of the refrigerator 1.
Is a cross-sectional plan view of the partition wall 7 of the refrigerator 1, and FIG.
FIG. 3 is a refrigerant circuit diagram of the refrigeration cycle of FIG.

The refrigerator 1 has a front-opening heat-insulating box 6 formed by filling a heat-insulating material 4 such as polyurethane foam between an outer box 2 made of a steel plate and an inner box 3 made of a hard resin such as ABS by an in-situ foaming method. It is composed of The interior of the heat-insulating box 6 is vertically divided by a partition wall 7 formed of a heat-insulating wall integrally formed with the heat-insulating box 6, and the inside of the heat-insulating box 6 above the partition 7 is upper-partitioned. It is vertically divided by a member 8.

A refrigerator compartment 11 is provided above the upper partition member 8, and a vegetable compartment 12 is provided between the upper partition member 8 and the partition wall 7. Further, the opening edge of the heat insulating box 6 below the partition wall 7 is vertically divided by a lower partition member 9, and the lower side of the lower partition member 9 is a freezing compartment 13. The space between the partition wall 7 and the lower partition member 9 is further divided into left and right by a heat insulating wall 30 (FIG. 5).
(FIG. 5). In FIG. 5, the partition wall 7 is shown for explanation.
Hatching is omitted.

The front opening of the refrigerating compartment 11 is closed by a rotatable heat insulating door 14 so as to be openable and closable, and the freezing compartment 13 and the vegetable compartment 12 have containers 16A, 17A having top openings.
Are respectively opened and closed by drawer-type heat-insulating doors 16 and 17 each having a. The ice making chamber 10 is also openably closed by a drawer-type heat-insulating door 18 provided with a container 18A having an upper surface opening, and the select chamber 15 is also openably closed by a similar drawer-type heat-insulating door 19 (FIG. 1). Have been. Reference numeral 20 denotes a control panel provided at the lower part of the front of the door 14.

In the upper part of the ice making room 10, an automatic ice making machine 2 is provided.
1 is installed. Further, the back of the vegetable compartment 12 is partitioned forward and backward by a partition plate 22 and a cooler front plate 23, and a cooling chamber 24 is defined behind the cooler front plate 23, and refrigerated in the cooling chamber 24. A room cooler 26 is provided vertically.
Above the refrigerator cooler 26, a refrigerator blower 27 is provided.
Is provided, and a defrost heater 28 is provided below the refrigerator cooler 26. Also, this defrost heater 2
A drain receiver 29 is formed below 8.

The back of the freezing compartment 13 from the back of the ice making compartment 10 and the select compartment 15 is divided into front and rear by a partition plate 32 and a front plate 33 of the cooler. Is formed, and a freezer compartment cooler 36 is vertically provided in the cooling chamber 34. Above the freezer compartment cooler 36, a freezer compartment blower 37 is provided, and below the freezer compartment cooler 36, a defrost heater 38 is provided. A drain receiver 39 is formed below the defrost heater 38.

The upper part of the partition plate 32 is formed with an outlet for the ice making chamber and the outlet of the select chamber, and the center part is formed with a discharge port 13A for the freezer compartment. An inlet 13B is formed. Note that a motor damper (not shown) that opens and closes a flow path based on the temperature of the select chamber 15 is attached to a discharge port (not shown) of the select chamber.

On the other hand, a vegetable compartment suction port 12A is formed below the partition plate 22 at the back of the vegetable compartment 12, and the partition plate 22 is
The upper end of the space between the chiller and the cooler front plate 23 communicates with a refrigerator compartment rear duct 47 described later. Further, a vegetable compartment discharge port 12B for blowing out cool air is formed below the upper partition member 8 at an upper portion of the partition plate 22.

On the other hand, a back plate 49 is attached to the back of the refrigerator compartment 11 at a distance from the back of the inner box 3 and a back insulation 50 is attached to the back of the back plate 49. The refrigerator compartment rear duct 47 extending vertically is formed. The refrigerator compartment discharge ports 11 </ b> A are formed on the left and right sides of the rear plate 49, and penetrate the rear heat insulating material 50 and communicate with the refrigerator compartment rear duct 47. In the refrigerating room 11, a plurality of shelves 51 are provided.

Also, on the left and right sides of the back plate 49, the back insulation material 5 is provided.
The recesses 31, 31 are formed on both sides of the vertical axis 0 and extend vertically.
Is attached. Then, the front surfaces of the recesses 31, 31 are closed by a light-transmitting shade (not shown) (in FIG. 2, the left illumination lamp 59 is seen through).

Further, an upper partition member 8 is provided below the refrigerator compartment 11.
A partition plate 42 is attached at a predetermined interval above the partition plate 42. An openable and closable lid 43 is rotatably hung on the front side of the partition plate 42, and a built-in chamber is formed in a space surrounded by these. 44 are formed. In this built-in chamber 44, a container 48 that can be pulled out is stored. In addition, 44A
Is a built-in chamber discharge port formed in the back plate 49, and communicates with the lower part of the refrigerator compartment rear duct 47.

The upper partition member 8 has a refrigerator compartment suction port 51.
The refrigerator compartment suction port 51 is connected to the vegetable compartment 12.
Communicates within. Further, the built-in chamber 44 houses a water supply tank (not shown) for supplying water to the automatic ice making machine 21.

Container 17A stored in the vegetable compartment 12
The upper surface of the container 1 is closed by a lid 53, and the cool air returning from the refrigerator compartment 11 passes through the refrigerator compartment suction port 51 and this container 1
After being circulated around 7A, it is returned to the cooling room 24 from the vegetable room suction port 12A. In addition, the ice making room 10 and the freezing room 13
Is returned to the cooling chamber 34 from the freezing chamber suction port 13B. The return from the select chamber 15 is returned to the cooling chamber 34 from a select chamber suction port (not shown).

Here, a concave portion 54 is formed at the center of the front surface of the rear heat insulating material 50 so as to be vertically depressed, and a suction port 56 is formed in the rear plate 49 at a position corresponding to a lower portion of the concave portion 54. Is attached. A rear duct 57 for an air curtain is formed in the concave portion 54 closed by the rear plate 49, and the electric heater H for temperature compensation is formed therein.
Is attached. Reference numeral 55 denotes a cover attached to the suction port 56.

An air curtain blower 68 having a turbo fan 67 for sucking cool air from the axial direction (front) and blowing it out in the radial direction is disposed in the air curtain rear duct 57 located behind the suction port 56. ing. A top plate 63 is attached to the top surface of the refrigerator compartment 11, and inside the top plate 63, a top duct 64 for an air curtain is formed extending back and forth. The rear end of the top curtain 64 for the air curtain is connected to the rear duct 57 for the air curtain.
The upper surface duct 6 for air curtain
A plurality of outlets 66 are arranged at the front end of the refrigerator 4 in the vicinity of the front opening of the refrigerator compartment 11 (see FIG. 2).
Then, the blower 68 is seen through.)

On the other hand, a machine room 41 is formed at the lower part of the heat insulating box 6, and in the rear part of the machine room 41, the refrigerating cycle of FIG. The compressor 69 etc. which comprise the refrigerant circuit of this is installed. In the refrigerant circuit diagram of FIG. 6, reference numeral 71 denotes a condenser, 72 denotes a motor-driven three-way valve, and 73 and 74 denote capillary tubes. In addition, the capillary tube 7
3, 74 are soldered so as to have a heat exchange relationship with a refrigerant suction pipe 69S described later.

The refrigerant discharge pipe 69D of the compressor 69
Is connected to the condenser 71 and the outlet 71 of the condenser 71
A is connected to a three-way valve 72 via a dryer 70. One outlet of the three-way valve 72 is connected via a capillary tube 73 to the inlet of the refrigerator compartment cooler 26, and the refrigerator compartment cooler 2
The outlet of 6 is connected to the inlet of the freezer compartment cooler 36.

The other outlet of the three-way valve 72 is connected via a capillary tube 74 to the inlet of the freezer compartment cooler 36, and the outlet of the freezer compartment cooler 36 is connected to the compressor 69.
Is connected to the refrigerant suction pipe 69S. In addition, the three-way valve 7
Reference numeral 2 denotes a capillary tube for transferring the liquid refrigerant from the condenser 71 to the capillary tube 7.
In addition to having a function of opening and closing the outlet so as to selectively flow through the three or the capillary tube 74, it also has a function of closing both outlets to completely close the flow path and a function of opening both outlets. Reference numeral 40 denotes a refrigerator cooler 36 and a compressor 6.
9 is a header as a refrigerant liquid reservoir connected between the components 9.

When the compressor 69 is operated by a control device (not shown), the refrigerant discharge pipe 69D of the compressor 69
The high-temperature and high-pressure gas refrigerant discharged from the tank flows into the condenser 71 to radiate heat and is condensed and liquefied. And the condenser 71
Enters the three-way valve 72 via the dryer 70.

When there is a cooling request from both the freezer compartment 13 and the temperature sensor (not shown) for detecting the temperature of the refrigerating compartment 11, the control device switches the three-way valve 72 to the capillary tube 7.
Open to the 3rd side. Thereby, the refrigerant condensed and liquefied in the condenser 71 is depressurized in the capillary tube 73,
The refrigerant sequentially flows into the refrigerator cooler 26 and the freezer cooler 36 and evaporates, and both the coolers exhibit the cooling ability.

When there is a cooling request from the temperature sensor of the freezing compartment 13, the control device opens the three-way valve 72 to the capillary tube 74 side. Thereby, the condensing device 7
The refrigerant condensed and liquefied in step 1 is decompressed by the capillary tube 74, flows into the freezer compartment cooler 36, evaporates, and exhibits a cooling capacity in the freezer compartment cooler 36. When there is no cooling request from the temperature sensors in both the freezing room 13 and the refrigerating room 11, the control device stops the compressor 69 (the blower 2).
7, 37 are also stopped), and both outlets of the three-way valve 72 are closed to completely close the flow path.

When the freezing room blower 37 is operated, the cool air in the cooling room 34 cooled by the freezing room cooler 36 is discharged from the ice making room discharge port or the select room discharge port to the ice making room 10.
And the selection chamber 15 and the freezing chamber discharge port 1
It is discharged from 3A to the freezer compartment 13. After circulating and cooling in each room, the cool air returns to the inside of the cooling room 34 from the freezing room suction port 13B (solid arrow in FIG. 2). As a result, the freezing compartment 13 is maintained at a predetermined freezing temperature (about −20 ° C.).

The temperature in the ice making chamber 10 is also set to the freezing temperature, and ice is made by the automatic ice making machine 21. Further, the control temperature in the select room 15 can be selected in a range from the freezing room to the vegetable room, and the amount of cool air supplied from the select room discharge port is controlled by the motor damper so as to be the selected temperature. You. The motor damper is controlled by the control device based on a temperature sensor (not shown) that detects the temperature of the select chamber 15.

On the other hand, when the refrigerator air blower 27 is operated, the cold air in the cooling room 24 cooled by the refrigerator air cooler 26 flows into the refrigerator room rear duct 47, and the refrigerator room discharge port 1.
1A, etc., are blown out into the refrigerator compartment 11 and the built-in chamber 44 from the built-in chamber discharge port 44A, circulate through the inside and cool, and then flow into the refrigerator compartment suction port 51.

The cool air flowing into the refrigerator compartment suction port 51 passes through the upper partition member 8, mixes with the cool air blown out from the vegetable compartment discharge port 12B, enters the vegetable compartment 12, and circulates around the container 17A to circulate the container. After indirectly cooling the inside of 17A, it is sucked from the vegetable room suction port 12A and returns to the cooling room 24. Thereby, the inside of the refrigerator compartment 11 is kept at the refrigerator temperature (+ 3 ° C.
+ 5 ° C.), and the vegetables in the container 17A are kept cool while drying is prevented (solid arrows in FIG. 2).

The control device turns on the freezer blower 37 based on the temperature of the freezer 13 detected by the temperature sensor.
-OFF control and ON-OFF control of the refrigerator air blower 27 based on the temperature of the refrigerator compartment 11 are performed.
7 is opened, the refrigerator air blower 27
Is stopped, and when one of the doors 16, 18, 19 is opened, the freezer-room blower 37 is stopped. This suppresses cold air leakage from each room.

In the control device, the door 14 of the refrigerator compartment 11 is closed and the temperature in the refrigerator compartment 11 is, for example, +6.
If the temperature is lower than a predetermined high temperature such as ° C, the air curtain blower 68 is stopped. Then, when the door 14 is opened, the control device operates the air curtain blower 68.
And the illumination lamp 59 is turned on.

When the air curtain blower 68 is operated, the cool air in the refrigerator compartment 11 is sucked from the suction port 56 through the cover 55 because the cool air is sucked from the axial direction and blows out in the radial direction. Air curtain blower 6
Sucked in 8. Then, the air is blown out to the rear curtain 57 for the air curtain, rises there, enters the top surface duct 64 for the air curtain, flows therethrough, and flows therethrough.
6 is blown out to the opening of the refrigerator compartment 11 below.

As a result, a cool air curtain is formed in the entire opening of the refrigerator compartment 11 as shown by the dashed arrow in FIG. 2, so that when the door 14 is opened, the refrigerator compartment 1 is opened.
The air curtain can prevent as much as possible the outside air trying to enter the inside 1 and the cool air trying to leak from inside the refrigerator compartment 11.

Here, the control device accumulates the time during which the door 14 is open, and when the door 14 is closed,
Air curtain blower 6 for the same time as the integration time
After the operation 8 is continued, the operation is stopped. This allows
The temperature rise and the temperature unevenness in the refrigerator compartment 11 generated during the opening of the door 14 can be quickly reduced and made uniform after the door 14 is closed. Further, when the temperature in the refrigerator compartment 11 rises to a high temperature, for example, + 6 ° C., for example, due to input of a large amount of heat load, the control device opens the door 14.
Is closed and the air curtain blower 68 is operated even after the integration time has elapsed.

As a result, the cool air in the refrigerator compartment 11 is stirred, so that the temperature recovery (reduction) in the refrigerator compartment 11 is accelerated. In addition, the operation of the air curtain blower 68 as described above stirs the cool air in the refrigerator compartment 11, so that the temperature in the refrigerator compartment 11 also becomes uniform. Further, since the cool air curtain is formed when the door 14 is opened, it is possible to contribute to energy saving. Furthermore, even when the door 14 is closed, when the temperature in the refrigerator compartment 11 rises to a predetermined value or more, the air curtain blower 68 is operated,
The cool air in the refrigerator compartment 11 is agitated by the operation of the air curtain blower 68, and the temperature recovery (reduction, especially the pocket inside the door 14 and the like) in the refrigerator compartment 11 can be accelerated.

The control device accumulates the operation time of the compressor 69, and when the total operation time reaches a predetermined time, the defrost heaters 28 and 38 generate heat. Thereby, the refrigerator cooler 26 and the refrigerator cooler 36 are heated, and the frost adhered to them is melted. Drain water generated by the melting of the frost is received in drain receivers 29 and 39 disposed below each cooler.

Next, the configuration inside the machine room 41 of the refrigerator 1 of the present invention will be described in detail with reference to FIGS. 7 is a longitudinal sectional side view of the lower portion of the refrigerator 1, FIG. 8 is a rear view of the lower portion of the refrigerator 1, FIG. 9 is a plan view of the inside of the machine room 41 of the refrigerator 1, FIG.
Is an exploded perspective view of the refrigerator 1 in the machine room 41, FIGS. 11 and 12 are enlarged longitudinal sectional side views of the refrigerator 1 in the front of the machine room 41, and FIG.

The bottom surface 6A of the heat insulating box 6, which is the top surface of the machine room 41, has a stepped shape with a low front portion and a high rear portion only, and the front, bottom and rear surfaces of the machine room 41 are open.
At the rear of the bottom of the machine room 41, angle members 8 on the left and right bottoms
0 and 80, a compressor stand 79 is attached, and the compressor 6 is located on the right side when viewed from the front of the compressor stand 79.
9 are installed.

In front of the machine room 41, a kick plate 82 is attached to the front of the heat insulating box 6 so as to cover the front of the machine room 41 from right to left under the door 16, and this kick plate 82 is provided. A plate-type evaporating dish condenser 83 constituting a part of the condensing device 71 of the refrigeration cycle is attached to the angle members 80, 80 at the bottom of the machine room 41,
It is arranged with a space between A and the installation floor. The evaporating dish 90 is placed on the evaporating dish condenser 83, and is located between the evaporating dish condenser 83 and the bottom surface 6A. In the drawing, reference numerals 95 and 95 denote evaporating dish rails provided on both sides of the evaporating dish condenser 83 so as to slidably hold the evaporating dish 90 back and forth.

The interior of the machine chamber 41 is partitioned into a vapor condenser condenser 83 side and a compressor base 79 side by a partition plate 84 located in front of the compressor 69, and a communication portion 86 is provided on the left side of the partition plate 84. It is configured. On the left side of the compressor 69, a fan partition plate 87 made of, for example, a synthetic resin is attached, and the fan partition plate 87 has an opening 87A. The fan partition plate 87 is integrally formed with a storage portion 103 that is inclined forward and low, and the back portion of the storage portion 103 is opened right and left at the opening 87A.
The rear surface is open rearward at the opening 103A.

Then, a blower 88 for a machine room is inserted into the storage section 103 from the opening 103A on the rear surface and attached thereto. The blower 88 for a machine room is a square axial fan having a substantially square overall shape.
Is the center, and the fan section 88F is arranged around the center. The machine room blower 88 is provided in the storage section 103.
While being inserted into the inner part, it is located at the opening 87A and is inclined so as to fall forward as a whole as shown in FIG. This allows
The upper surface 88A of the machine room blower 88 is inclined low toward the evaporating dish condenser 83 when viewed from the axial direction. Also,
With such an inclined arrangement, an interval is formed between the compressor partition 79 and the rear lower corner of the fan partition plate 87, so that the refrigerant pipe 75 of the refrigeration cycle can be inserted therethrough.

An arrow-shaped claw 87B is formed integrally with the rear part of the fan partition plate 87, and the blower 8 for the machine room is formed.
The claw portion 87 </ b> B protrudes from the rear surface of the blower 88 for a machine room in a state in which 8 is stored in a predetermined position. As a result, the machine room blower 88 does not fall backward. When the machine room blower 88 is pulled backward from the storage section 103, a unit cover 91 described later is first removed, and the claw portion 87B is deformed outward, and then pulled out backward.

The blower 88 for the machine room is operated to suck air from the communicating portion 86 side and blow it out to the compressor 69 side. The condensing device 71 is provided at the air suction side of the blower 88 for the machine room. The main condenser 104, which constitutes a part of, is installed on the compressor stand 79. The main condenser 104 is, for example, a forced air-cooled heat exchanger provided with a number of small disk-shaped fins around a refrigerant pipe.

The refrigerant discharge pipe 69D of the compressor 69 is located on the air blowing side of the blower 88 for the machine room, and is bent in a direction substantially perpendicular to the flow of the air blown from the blower 88 for the condenser. , One round trip. The refrigerant discharge pipe 69D may be bent more times.

Further, the three-way valve 72 is mounted on the bottom surface 6A (inclined portion) of the heat insulating box 6 at the windward side of the main condenser 104. The located dryer 70 is also arranged behind the three-way valve 72 that is on the windward side of the main condenser 104.

The evaporating dish 90 has a handle 90A protruding forward at the center of the front edge, and a receiving portion 90B protruding toward the main condenser 104 on the left side of the rear edge. . Reference numerals 90C and 90C denote rattling preventing projections formed on both upper surfaces of the handle 90A, and reference numeral 90D denotes a stopper protruding from the lower edge of the handle 90A. Water sealing devices 107 and 108 are attached to the bottom surface 6A so as to correspond to the upper side of the receiving portion 90B.
Drain pipes 109 and 111 connected to the respective drain receivers 29 and 39 are inserted into 108.

The water sealing devices 107 and 108 have a so-called trap structure for storing a part of the drain water flowing down in the drain pipes 109 and 111 and sealing the drain water, as shown in FIG. It is located on the front side of the blower 88. After the drain pipes 109 and 111 are pulled out from the rear part of the heat insulating box 6, the blower 8 for the machine room as shown in FIG.
8 are drawn forward along the inclined surface 103A of the storage section 103 on the upper side of 8 and inserted into the water sealing devices 107 and 108, and therefore, the drain pipes 109 and 111 are inclined forward and low.

As a result, the drain water dropped from each of the coolers 26 and 36 and received by the drain receivers 29 and 39 enters the drain pipes 109 and 111 and flows down.
Further, after flowing downward along the inclination of the upper inclined surface 103A of the machine room blower 88, the air flows smoothly into the receiving portion 90B of the evaporating dish 90 via the water sealing devices 107 and 108.

Further, the rear opening of the machine room 41 is closed by a detachable unit cover 91 (FIG. 8 shows a state in which the unit cover 91 is removed). An exhaust port 93 is formed on the right side (compressor 69 side) of the unit cover 91.

In the figure, reference numeral 112 denotes a frame horizontal plate (which becomes a part of the outer box 2) which borders the lower edge of the front opening of the heat insulating box 6, and is located at the front of the machine room 41. This frame horizontal plate 11
An opening 112A is formed in 2 and the evaporating dish 90 is put into and taken out of the machine room 41 through the opening 112A.

Then, on the rear surface of the frame horizontal plate 112, it crosses right and left in a form located outside the opening 112A,
The transport handle 113 of the refrigerator 1 is attached. The carrying handle 113 is made of a hard synthetic resin, and has left and right mounting arms 113A and these mounting arms 113A, 1A.
13A is composed of a grip portion 113B extending between the lower ends. The rear surface of the grip 113B has a smooth curved shape.

On the other hand, the opening 112A of the frame horizontal plate 112
The lower edge is formed with an insertion portion 112B having a substantially U-shaped cross section in a shape opened rearward, and the grip portion 113B of the carrying handle 113 is inserted into the insertion portion 112B from the rear side. Are exposed at a predetermined interval for inserting a finger from the front edge 83A of the condenser 83 for the evaporating dish. When the grip portion 113B is inserted into the insertion portion 112B, the grip portion 113B is fixed from below by a screw 114 passing therethrough. Further, the upper surfaces of the mounting arm portions 113A and 113A are fixed to the bottom surface 6A by a screw 116. The transport handle 113 is attached to the heat-insulating box 6.

In this case, the tip of the screw 114 is
2B. Also, the condenser 83 for the evaporating dish
The front edge 83A is bent downward at a right angle as shown in FIG. 11, and then bent rearward. Thus, the risk of being injured by the screw 114 and the front edge 83A of the evaporating dish condenser 83 when holding the transport handle 113 is avoided.

Here, the kick plate 82 is detachably attached to the frame horizontal plate 112,
It has a cross-sectional shape that has a 2A and a front surface 82B and is open downward and rearward. At the center of the upper surface 82A in the left-right direction, a total of five rectangular intake ports (through holes) 101 are provided.

In this case, the kick plate 82 is formed of a hard synthetic resin, and its molding die is
.. Are divided vertically. On the other hand, the upper and lower caps of the door 16 are also usually formed of a hard synthetic resin, and the mold thereof is similarly divided in the vertical direction.

Here, the molding die of the conventional kick plate is of the type which is divided in the front-rear direction of each figure, and
There was a tendency for the back side (the heat insulation box 6 side) to be thick. In such a case, the gap between the lower cap and the lower cap of the door 16 becomes larger on the front side, and the intake port portion has a cut-out structure in the mold structure, so that this tendency is further increased. For this reason, there was a problem that the intake port could be easily seen from the front, but if it was formed as in the embodiment, the thickness of the kick plate 82 only on the rear side would not be increased, and the gap with the lower cap of the door 16 would be reduced. The concealment effect is assured by the door 16 being uniform.

Are located in the lower projection plane of the door 16 so that the doors 16 are concealed by the door 16 when the door 16 is closed. . Further, the outer edges of the air supply ports 101, 101 located at the left and right ends are located inside the left and right outer edges of the container 16A.

Next, the flow of air in the machine room 41 with the above-described configuration will be described. When the compressor 69 is operated as described above, the high-temperature and high-pressure refrigerant discharged from the compressor 69 first enters the evaporating dish condenser 83 via the refrigerant discharge pipe 69D, and radiates heat there and drains in the evaporating dish 90. Heat the water from below. The refrigerant having exited from the condenser 83 for the evaporating dish then enters the main condenser 104, where it is condensed and then condensed via a not-shown condensing pipe provided inside the outer box 2 of the heat insulating box 6, and finally the condensing device 71 It will enter the dryer 70 from the exit.

The motor unit 88M of the machine room blower 88 is operated in synchronization with the compressor 69 to rotate the fan unit 88F. When the fan unit 88F rotates, the kick plate 8 located at the front of the machine room 41 as shown by the dashed arrow in FIG.
Outside air is sucked from below the intake port 101 on the upper surface 82A of the second and the kick plate 82, passes over the evaporating dish 90, and reaches the communication portion 86.

The outside air that has entered the compressor stand 79 from the communication section 86 flows into the main condenser 104 and is cooled by air.
It is sucked into the machine room blower 88 and accelerated. The outside air accelerated by the machine room blower 88 reaches the compressor 69 through the periphery of the refrigerant discharge pipe 69D, is blown around the compressor 69, is air-cooled, and is discharged to the outside through the exhaust port 93 of the unit cover 91. Will be done.

When the machine room blower 88 is stopped, the warm air in the machine room 41 and the steam rising from the evaporating dish 90 are discharged from the intake port 10 of the upper surface 82 A of the kick plate 82.
From 1 smoothly flows out to the outside. Thus, the heat radiation of the condenser 83 for the evaporating dish and the evaporation of the drain water while the blower 88 for the machine room is stopped are smoothly performed.

With the above-described configuration, the main condenser 10 can be maintained while keeping the height of the machine room 41 in front of the compressor 69 low.
The ventilation to 4 makes it possible to secure the required condensation capacity. This makes it possible to maintain the required cooling capacity while keeping the overall height of the refrigerator 1 low or to secure the internal volume of the heat insulating box 6, thereby contributing to energy saving.

In particular, as in the embodiment, the heat insulating box 6 is divided into a plurality of upper and lower chambers to form a freezing chamber 13 and a refrigerating chamber 11, and a cooler for a freezing chamber for circulating cool air in each of these chambers for cooling. In the refrigerator 1 provided with the refrigerator 36 and the refrigerator cooler 26, respectively, the height dimension inevitably increases,
In such a case, the machine room 41 can be made extremely compact.

Further, the evaporating dish 90 is heated from below by the evaporating dish condenser 83 and is ventilated by the machine room blower 88, and the evaporating capacity of the drain water introduced from each of the coolers 26 and 36. Will improve dramatically. In particular, since the main condenser 104 is disposed on the air suction side of the blower 88 for the machine room, the main condenser 104 is uniformly ventilated, and the condensation efficiency and capacity of the refrigerant are further improved. In addition, since the compressor 69 is also air-cooled by forced ventilation, burn-in of the compressor 69 and a decrease in operating efficiency can be prevented or suppressed.

Further, the machine room blower 88 is constituted by a square axial fan, and the drain pipes 109 and 111 from the respective coolers 26 and 36 are arranged above the machine room blower 88. Therefore, the drain pipes 109 and 111 drawn from the upper rear part of the machine room 41 are connected to the main condenser 10.
4 and the like can be guided to the evaporating dish 90 in front. Thereby, the main condenser 104
Can be secured sufficiently.

Further, the refrigerant discharge pipe 69D of the compressor 69 is arranged on the windward side of the compressor 69, and is bent at least one round or more in a direction substantially perpendicular to the flow of the wind from the blower 88 for the machine room. The high-temperature refrigerant immediately after being discharged from the compressor 69 can be effectively cooled by ventilation from the blower 88 for the machine room, thereby contributing to the improvement of the condensing capacity. The disadvantage that the evaporating dish 90 on the condenser 83 is excessively heated and damaged can be avoided.

In particular, since the refrigerant discharge pipe 69D is bent at least one round trip in a direction substantially perpendicular to the flow of air from the blower 88 for the machine room, sufficient heat exchange can be ensured in an extremely narrow space. It becomes possible.

Further, since the three-way valve 72 and the final outlet of the condenser 71 are arranged at least in the machine room 41 on the windward side of the main condenser 104 and the compressor 69, the refrigerant condensed by the condenser 71 is removed. The inconvenience of being reheated by the ventilation can be avoided beforehand, and it is possible to further improve the operation efficiency and the cooling capacity.

[0080]

As described above in detail, according to the present invention, a machine room is formed below a heat insulating box, and a compressor and an evaporating dish condenser constituting a refrigeration cycle are installed in the machine room. In a refrigerator comprising an evaporating dish for receiving drain water from a cooler of a refrigeration cycle on a dish condenser, a kick plate attached to an insulated box so as to close the front of the machine room is provided. Since the through holes are formed in the upper surface of the plate, especially when a blower for ventilating the inside of the machine room is provided as in claim 2, when the blower is stopped, warm air in the machine room is allowed to pass through the kick plate. It becomes easy to flow out of the hole.

Thus, the heat radiation of the condenser for the evaporating dish is also facilitated. In addition, since the steam evaporated from the evaporating dish also easily flows out, the treatment capacity of the drain water is improved.

According to the third aspect of the present invention, if the kick plate is arranged below the door that opens and closes the front opening of the heat-insulating box and the through hole is located in the lower projection plane of the door,
The through holes formed on the upper surface of the kick plate are hard to see from the outside, and the appearance is improved. Furthermore, in the case where a container which can be pulled out into the heat insulating box together with the door is provided as described in claim 4, if the through hole is located inside the outer edge of the container, the through hole remains open even when the door is opened. Becomes concealed by the container.

According to the fifth aspect of the present invention, the kick plate is made of a hard synthetic resin, and the mold for molding the kick plate is divided in the opening direction of the through hole. Since the molding method is the same as that of the door cap located on the upper side of the door, the distance between the kick plate upper surface and the door lower surface in the state of being attached to the heat insulating box is made uniform. As a result, the through hole of the kick plate can be securely hidden by the door.

[Brief description of the drawings]

FIG. 1 is a front view of a refrigerator according to the present invention.

FIG. 2 is a vertical sectional side view of the refrigerator of the present invention.

FIG. 3 is an exploded perspective view of a back plate and a back heat insulating material of the refrigerator compartment of the refrigerator of the present invention.

FIG. 4 is a plan sectional view of a refrigerator compartment of the refrigerator of the present invention.

FIG. 5 is a plan sectional view of a partition wall portion of the refrigerator of the present invention.

FIG. 6 is a refrigerant circuit diagram of a refrigeration cycle of the refrigerator of the present invention.

FIG. 7 is a longitudinal sectional side view of a lower part of the refrigerator of the present invention.

FIG. 8 is a rear view of the lower part of the refrigerator of the present invention.

FIG. 9 is a plan view of the inside of the machine room of the refrigerator of the present invention.

FIG. 10 is an exploded perspective view of a machine room portion of the refrigerator of the present invention.

FIG. 11 is an enlarged vertical sectional side view of a front part of a machine room of the refrigerator of the present invention.

FIG. 12 is an enlarged vertical sectional side view of the front of the machine room of the refrigerator of the present invention with the evaporating dish removed.

FIG. 13 is a partially cutaway front view of the lower part of the refrigerator of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Outer box 3 Inner box 4 Polyurethane heat insulating material 6 Insulated box 11 Refrigerator room 13 Freezer room 14, 16, 17, 18, 19 Door 16A container 26 Refrigerator cooler 36 Refrigerator cooler 41 Machine room 69 Compressor 71 Condenser 72 Three-way valve 79 Compressor stand 82 Kick plate 83 Evaporating dish condenser 88 Machine room blower 90 Evaporating dish 101 Inlet 104 Main condenser 109, 111 Drain pipe

Claims (5)

[Claims] 1. A machine room is formed below a heat insulating box, a compressor and an evaporating dish condenser constituting a refrigeration cycle are installed in the machine room, and the cooling of the refrigeration cycle is provided on the evaporating dish condenser. A refrigerator comprising an evaporating dish for receiving drain water from a vessel, comprising: a kick plate attached to the heat-insulating box so as to close a front surface of the machine room; and a through hole formed in an upper surface of the kick plate. A refrigerator characterized by: 2. The refrigerator according to claim 1, further comprising a blower for ventilating the inside of the machine room. 3. A door for opening and closing the front opening of the heat-insulating box body, wherein the kick plate is disposed below the door, and the through hole is located in a lower projection plane of the door. The refrigerator according to claim 1 or claim 2, wherein 4. The refrigerator according to claim 3, further comprising a container that can be pulled out into the heat insulating box together with the door, wherein the through hole is located inside an outer edge of the container. 5. The kick plate is made of a hard synthetic resin, and a mold for molding the kick plate is divided in a direction in which the through holes are opened.
Refrigerator.