JPH08247618A - Refrigerator - Google Patents

Abstract

PURPOSE: To improve the cooling efficiency of a cooling unit and make thinner the unit. CONSTITUTION: A cooling unit 45 is provided on the upper part of a refrigerator body 11. In the cooling unit 45 there are formed a condenser chamber 14 surrounded with a heat insulating material 14a and a machine chamber 15, which are disposed adjacent to each other horizontally. Accordingly, the cooling unit 45 is made thin compared with the case where the condenser chamber 14 and the machine chamber 15 are disposed adjacent to each other vertically. Further, in the condenser chamber 14 there are accomodated evaporators 21, 22, and a cooling fan 29 is placed in the vicinity of a cold air outlet duct 28 for feeding cold air produced by the evaporators 21, 22. Accordingly, there is no dead space in the evaporator 26 and hence cooling efficiency of the freezing cycle is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a fan device for circulating cold air.

[0002]

2. Description of the Related Art In refrigerators, there are provided comptop refrigerators in which a refrigerating cycle accommodating portion is arranged above a refrigerator body. FIG. 15 shows a conventional configuration of a comp-top refrigerator, where 1 is a refrigerator main body and 2 is a box-shaped refrigeration cycle storage part. Here, the cooler chamber 3 surrounded by the heat insulating material 3a is formed in the lower stage of the refrigeration cycle storage unit 2, and the machine chamber 4 is formed in the upper stage. The evaporator 5a of the refrigeration cycle is installed in the cooler chamber 3.
And the compressor 5b and the condenser 5c of the refrigeration cycle are housed in the machine room 4, and when the cooling fan device 6 operates, cold air is supplied from the cooling room 3 into the refrigerator body 1. There is.

[0003]

However, in the above-mentioned prior art, since the cooler chamber 3 and the machine chamber 4 are arranged in upper and lower two stages, the height dimension of the refrigeration cycle storage section 2 is increased. Further, since the cooling fan device 6 is housed in the cooler chamber 3, the evaporator 5a and the cooling fan device 6 are arranged close to each other. Therefore, as shown in FIG. 16, a dead region β1 that deviates from the flow of cold air is generated in the evaporator 5a, a volume efficiency deterioration portion β2 is generated in the cooler chamber 3, and as a result, the cooling efficiency of the refrigeration cycle is reduced. Was.

In the case of the above conventional structure, since the evaporator 5a can be arranged in the entire widthwise direction of the cooler chamber 3, the required cooling performance can be secured even if the height of the evaporator 5a is relatively small. However, since the cooling fan device 6 is housed in the cooler chamber 3, the height dimension in the cooler chamber 3 is dominated by the cooling fan device 6, and as a result, the height dimension of the refrigeration cycle storage unit 2 becomes smaller. There is a reason to grow.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a refrigerator in which the cooling efficiency of the refrigeration cycle can be improved and the refrigeration cycle storage section can be made thinner.

[0006]

According to a first aspect of the present invention, there is provided a refrigerator having a refrigerating cycle accommodating portion for accommodating a refrigerating cycle.
The cooling device includes a fan device that supplies the cool air generated by the cooler to the inside of the refrigerator through the cool air outlet, and a cool air duct through which the cool air supplied by the fan device flows, and the refrigeration cycle storage unit is the cooler of the refrigeration cycle. It is characterized in that it has a cooler chamber in which a unit is housed and a machine room which is arranged adjacent to the cooler chamber in a plane, and the fan device is arranged in the vicinity of the cool air outlet.

The refrigerator according to the second aspect is characterized in that the cooler chamber and the machine chamber are arranged adjacent to each other in the left-right direction. The refrigerator according to claim 3 is characterized in that the fan device is arranged at a corner of the cold air duct. According to a fourth aspect of the present invention, a refrigerator includes a damper that controls opening and closing of a cool air outlet, and a fan device is arranged adjacent to the damper. The refrigerator according to claim 5 is characterized in that the refrigerating cycle storage portion is arranged at the upper part of the refrigerator body.

[0008]

According to the means described in claim 1, when the fan device is operated, the cool air generated by the cooler is supplied to the inside of the refrigerator through the cool air outlet and flows through the cool air duct. In this case, since the machine room and the cooler room are arranged adjacent to each other in a plane, the refrigeration cycle storage section is made thin. A fan device is arranged near the cool air outlet. For this reason, since the cooler and the fan device are arranged with a predetermined gap, the dead region of the cooler and the portion where the volumetric efficiency of the cooler chamber is deteriorated are eliminated.

According to the second aspect of the present invention, the cooler chamber and the machine chamber are arranged adjacent to each other in the left-right direction. Therefore,
A cool air duct can be formed on the back heat insulating wall in the refrigerator without structural restrictions, and cool air can be circulated from the front side to the back side of the cooler chamber. According to the third aspect, the fan device is arranged at the corner of the cool air duct. Therefore,
The wall surface of the cold air duct reduces the pressure loss of the fan device.

According to the fourth aspect of the present invention, the damper for controlling the opening / closing of the cool air outlet is arranged adjacent to the fan device. Therefore, as compared with the case where the damper and the fan device are separately arranged, the wasted space is reduced, and the volumetric efficiency is improved. According to the means described in claim 5, the present invention is applied to a comp-top refrigerator in which the refrigeration cycle storage portion is arranged in the upper part of the refrigerator body.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
It will be described based on 1. First, in FIG. 4, the refrigerator main body 11 has a box shape with an open front surface, and a steel plate outer box 11b is combined with an outer side of a synthetic resin inner box 11a,
A heat insulating material 11c such as urethane foam is injected and foamed and filled between the inner box 11a and the outer box 11b.

A refrigerating room 11e, a freezing room 11g and a vegetable room 11h are formed in order from the upper side in the interior 11d of the refrigerator body 11. The refrigerator compartment 11e, the freezer compartment 11g, and the vegetable compartment 11h are formed by partitioning the interior 11d with a partition wall 11i, and the front opening of the refrigerator compartment 11e is pivotally supported by the refrigerator body 11. It is covered by the door 12a. The freezer compartment 11g is covered with doors 12b and 12c that close the front opening of the refrigerator main body 11, and the vegetable compartment 11h is covered with a door 12d that closes the front opening of the refrigerator main body 11. In addition, refrigerating room 11e
A chilled chamber 11f is provided at the bottom inside.

A container 11 is provided on each of the doors 12b, 12c and 12d.
K, 11m, 11n are provided, and each container 11k, 11
Rail members (not shown) are provided on the side surfaces of m and 11n. Each rail member is supported by the inner wall of the refrigerator body 11 so as to be freely drawn out. Therefore, the door 12b-
When 12d is pulled out, the containers 11k, 11m and 11n are pulled out together with the doors 12b, 12c and 12d.

A box-shaped refrigerating cycle unit 13 corresponding to a refrigerating cycle accommodating section is provided on the upper surface of the refrigerator main body 11. As shown in FIG. A cooler chamber 14 surrounded by 14a is formed, and a machine chamber 15 is formed on the left side. Then, in the machine room 15, the compressor 17, the condenser 18, and the dryer 19 of the refrigeration cycle 16 (see FIG. 6).
2), the capillary tube 20 (see FIG. 6) is accommodated, and the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22 corresponding to the condenser are accommodated in the cooler compartment 14.

The compressor 17, the condenser 18, the dryer 19, the capillary tube 2 of the refrigeration cycle 16
0, the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22 are connected in a closed loop as shown in FIG. 6, and cold air is generated as the refrigerant circulates in the refrigeration cycle 16. Further, a gas-liquid separator 23 is connected between the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22. This gas-liquid separator 23 is a compressor 17
The refrigerant that has passed through the refrigerator compartment evaporator 21 is gas-liquid separated by the gas-liquid separator 23, and the separated gaseous refrigerant is returned to the compressor 17.

FIG. 7 shows a refrigerator compartment evaporator 21 and a freezer compartment evaporator 22. As shown in the figure, the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22 are constituted by fixing a plurality of plate-like fins 25a and 25b to pipes 24a and 24b forming a refrigerant flow path, respectively. Pipes 24a and 24b
Is formed in a meandering shape having a plurality of U bend portions 24a 'and 24b'. The refrigerator compartment evaporator 21 and the freezer compartment evaporator 22 are, as shown in FIGS. 7 and 8, U-bend portions 24a ′ and 24b ′.
So as not to overlap with each other, they are arranged in a state of being displaced in the refrigerant flow direction (vertical direction in FIG. 7). The reference numeral 26 in FIG. 7 indicates a cooler unit including a refrigerator compartment evaporator 21 and a freezer compartment evaporator 22.

On the back heat insulating wall 11j of the refrigerator body 11,
As shown in FIG. 1, a cold air duct 27 is provided, and the cold air duct 27 extends in the left-right direction of the refrigerator body 11. Further, a cold air outflow duct 28 corresponding to a cold air outlet is buried in the upper wall of the refrigerator main body 11 and the bottom wall of the cooler chamber 14. As shown in FIG. 2, the cold air outflow duct 28 has a cold air blowing port 28a opening at the center of the cooler chamber 14, and an outlet (not shown) of the cool air duct 27.
It is open to.

As shown in FIG. 3, a cooling fan device 29 is housed in the cold air duct 27 at the right end thereof. The cooling fan device 29 corresponds to a fan device, and is composed of an axial fan 29a, a cooling fan motor 29b and a casing 29c, and its center line α1 coincides with the center line α2 of the evaporator 26 (see FIG. 7). It is arranged to. Then, when the cooling fan device 29 operates, the cool air in the cooler chamber 14 passes through the cool air outflow duct 28 from the cool air blowing port 28 a and the cool air duct 27.
It is designed to be sucked in.

On the back heat insulation wall 11j of the refrigerator body 11,
As shown in FIG. 1, an R cool air duct 30a is embedded at the center of the R cold air duct 30a. The R cool air duct 30a corresponds to the cool air duct according to claim 3, and the cold air that has passed through the cool air duct 27 and the refrigerating chamber 11e and has flowed into the cool air duct 27 flows from the R cool air duct 30a to the refrigerating chamber 11e.
It is supplied in e.

On the back heat insulation wall 11j of the refrigerator main body 11,
The F cold air duct 30b is buried in the left part thereof. The F cool air duct 30b corresponds to the cool air duct according to claim 3, and the cold air that has flowed into the cool air duct 27 and the freezing chamber 11g and has flowed into the cool air duct 27 is F
It is supplied to the freezer compartment 11g from the cold air duct 30b.

On the back heat insulating wall 11j of the refrigerator body 11,
A T cool air duct 30c is buried at a position slightly left of the central portion. The T cool air duct 30c communicates with the cool air duct 27 and the chilled chamber 11f, and
The cool air flowing into the inside 7 is supplied to the chilled chamber 11f from the T cool air duct 30c. Further, an R / V cold air duct 30d leading to the refrigerator compartment 11e and the vegetable compartment 11h is provided on the back heat insulating wall 11j of the refrigerator body 11, and the cold air supplied to the refrigerator compartment 11e and the chilled compartment 11f is R / V.
It is supplied to the vegetable compartment 11h through the V cold air duct 30d.

An F cold air return duct 31 is embedded in the back heat insulating wall 11j of the refrigerator body 11 and the heat insulating wall 14a of the cooler chamber 14 at the right end thereof. This F
The cold air return duct 31 has one opening 31a opening into the freezing compartment 11g and the other opening 31a as shown in FIG.
b is open to the front right side of the cooler chamber 14, and the cold air supplied to the freezing chamber 11g is the F cold air return duct 3
After being sucked into the F cold air return duct 31 through the opening 31a of No. 1 and returned to the inside of the cooler chamber 14 through the opening 31b, heat is exchanged with the evaporator 22 for the freezing compartment. The arrow A in FIGS. 2 and 7 indicates the opening 3 of the F cool air return duct 31.
The flow direction of F return air returned from 1b into the cooler chamber 14 is shown.

As shown in FIG. 1, the back heat insulating wall 11j of the refrigerator main body 11 and the heat insulating wall 14a of the cooler chamber 14 are
Located on the right side of the center, V cold air return duct 3
2 is buried. This V cold air return duct 32
The one opening 32a opens to the vegetable compartment 11h, and the other opening 32b opens to the front left side of the cooler compartment 14 as shown in FIG. 2, and the cold air supplied to the vegetable compartment 11h is After being sucked into the V cold air return duct 32 from the opening 32a of the V cold air return duct 32 and returned to the cooler chamber 14 through the opening 32b, the refrigerator compartment evaporator 21 is provided.
Is heat exchanged with. 2 and 7, the arrow B indicates the flow direction of the R return air returned from the opening 32b of the V cool air return duct 32 into the cooler chamber 14.

In this case, the refrigerator compartment 11e and the chilled compartment 11
f. Since the R return air returned from the vegetable compartment 11h contains a relatively large amount of water, the refrigerator compartment evaporator 22 to which the R return air is sprayed is likely to frost. Therefore, FIG.
As shown in, the fins 25 of the refrigerator compartment evaporator 21
The mutual pitch Pr of the a is set to be gradually smaller from the upstream side to the downstream side in order to widen the upstream side of the R return air and prevent clogging due to frost. Incidentally, R
The fin pitch on the upstream side of the return air (the front part of the refrigerator compartment evaporator 21) is Pr1, and the refrigerator compartment evaporator 2 is provided.
If the fin pitch at the center of 1 is Pr2 and the fin pitch on the downstream side of the R return air (at the rear of the refrigerator compartment evaporator 21) is Pr3, the relationship "Pr1>Pr2>Pr3" is established.

On the other hand, since the freezing compartment 11g is small in volume and the doors 12b and 12c are opened less frequently than the refrigerating compartment 11e, the water content of the F return air returned from the freezing compartment 11g is relatively large. Few. Therefore, the freezer compartment evaporator 22 is unlikely to be frosted. Therefore, in the evaporator 22 for the freezer compartment, the pitch Pf between the fins 25b is Pr.
It is set to the same level as 3 and the fins 25b are densely arranged. Although "Pf = Pr3" is set here, "Pf <Pr3" may be set depending on the number of times of opening / closing of the door, food difference, and the like.

As shown in FIG. 10, an F temperature sensor 33a is provided in the freezer compartment 11g.
a is connected to the control device 34. This controller 34
Is mainly composed of a microcomputer, and a compressor 17 and a cooling fan motor 29b are connected to the controller 34. Then, the control device 34
Controls the compressor 17 and the cooling fan motor 29b based on the detection signal of the F temperature sensor 33a, adjusts the amount of cold air supplied to the freezing compartment 11g, and maintains the inside of the freezing compartment 11g at a predetermined temperature.

Inside the cool air duct 27, a damper device 35 is provided as shown in FIG. The damper device 35 has an R damper 35a and a T damper 35b corresponding to a damper, and is connected to a damper drive mechanism 36 including a damper motor (not shown) as shown in FIG. Is connected to the controller 34. Then, the R temperature sensor 33 is provided in the refrigerator compartment 11e.
b is provided, the R temperature sensor 33b is connected to the control device 34, and the control device 34 drives and controls the R damper 35a based on the detection signal of the R temperature sensor 33b. Adjust the inlet aperture ratio.
Thereby, the amount of cold air supplied to the refrigerating compartment 11e is adjusted, and the inside of the refrigerating compartment 11e is maintained at a predetermined temperature.

A T temperature sensor 33c is provided in the chilled chamber 11f.
Is provided, and the T temperature sensor 33c is connected to the control device 34. Then, the control device 34 controls the T temperature sensor 3
As the T damper 35b is driven and controlled based on the detection signal of 3c, the inlet opening ratio of the T cold air duct 30c is adjusted. As a result, the amount of cold air supplied to the chilled chamber 11f is adjusted, and the inside of the chilled chamber 11f is maintained at a predetermined temperature.

As shown in FIG. 2, an R glass tube heater 37 and an F glass tube heater 38 are provided in the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22, respectively. These glass tube heaters 37 and 38 are for melting the frost attached to the refrigerator compartment evaporator 21 and the frost attached to the freezer compartment evaporator 22, and are connected to the control device 34 as shown in FIG. ing.

Inside the cooler chamber 14, as shown in FIG. 10, an R evaporator temperature sensor 39a for detecting the temperature of the refrigerator evaporator 21 is provided. This R
The evaporator temperature sensor 39a is arranged at the upper part of the refrigerator compartment evaporator 21 in which frost is likely to remain until the end during defrosting, and is connected to the control device 34.

FIG. 11A shows the operation timing of the compressor 17, and FIG. 11B shows the operation timing of the R glass tube heater 37. Here, the controller 34
Each time the compressor 17 is turned off (every one cycle of the compressor 17), the R glass tube heater 37 is energized to cause the R glass tube heater 37 to generate heat. When the detection signal of the R evaporator temperature sensor 39a reaches a predetermined temperature, the R glass tube heater 37 is turned off.

In the cooler chamber 14, as shown in FIG. 10, an F evaporator temperature sensor 39b for detecting the temperature of the freezer compartment evaporator 22 is provided. This F
The evaporator temperature sensor 39b is arranged above the freezer compartment evaporator 22 where frost is likely to remain until the end during defrosting, and is connected to the control device 34. Then, as shown in (c) of FIG. 11, the control device 34 integrates the operation time of the refrigeration cycle 16, and when the predetermined time is reached, the F glass tube heater 38 is energized, and the F glass tube heater 3
8 is heated, and the F glass tube heater 38 is turned off when the detection signal of the F temperature sensor 39b reaches a predetermined temperature.

As shown in FIG. 6, the refrigeration cycle 16 is provided with a bypass passage 16a in parallel with the refrigerator compartment evaporator 21, and an electromagnetic valve 16b is inserted in the bypass passage 16a. And the electromagnetic valve 16
b is connected to the control device 34 (see FIG. 10), and the control device 34 releases the electromagnetic valve 16b when the refrigerator compartment evaporator 21 is being defrosted (when the R glass tube heater 37 is energized). . Therefore, the evaporator 21 for the refrigerator compartment
Even if the compressor 17 is operated during defrosting, the refrigerant is not supplied to the refrigerator compartment evaporator 21, but is supplied only to the freezer compartment evaporator 22.

When the evaporator 21 for the refrigerator compartment is not defrosted (when the R glass tube heater 37 is cut off), the control device 34 closes the electromagnetic valve 16b to cool the evaporator 21 for the refrigerator compartment and the refrigerator compartment. Refrigerant is supplied to both evaporators 22.

In the cooler chamber 14, as shown in FIG.
A quadrangular pyramid-shaped drain pan 40 is provided directly below the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22, and defrosting water dropped from the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22 is drain pan 40.
Is collected by. Further, a drain hose 41 is embedded in the back heat insulating wall 11j of the refrigerator body 11 as shown in FIG. The drain hose 41 is connected to the drain pipe 40a of the drain pan 40 as shown in FIG. 9, and the defrost water collected by the drain pan 40 flows into the drain hose 41 through the drain pipe 40a. .

As shown in FIG. 4, an evaporation dish storage chamber 42 is provided at the bottom of the refrigerator body 11, and the evaporation dish storage chamber 42 is provided.
An evaporation dish 43 made of synthetic resin is housed inside. The lower end of the drainage hose 41 extends through the back heat insulating wall 11j of the refrigerator body 11 and is directed toward the inside of the evaporation tray 43, and the defrosted water that has flowed into the drainage hose 41 is supplied into the evaporation tray 43. It The drain hose 41 is arranged on the back side of the cooling fan device 29, as shown in FIG.

In the machine room 15, as shown in FIG.
A fan device 44 is housed. This C fan device 4
Reference numeral 4 denotes an axial flow fan 44a, a C fan motor 44b, and a casing 44c. When the C fan device 44 operates, the machine chamber 15
The outside air is sucked into the inside, and the outside air is supplied to the condenser 18 and the compressor 17 in this order. The C fan motor 44b is connected to the control device 34 (see FIG. 10) and is controlled by the control device 34. Further, reference numeral 45 indicates the refrigeration cycle unit 13 and the refrigeration cycle 1
Reference numeral 45 a denotes a cover member that covers the front side of the cooling unit 45.

The back heat insulating wall 11j of the refrigerator body 11 has a C
The fan air duct 46 is buried. The C fan air duct 46 is made of a non-water absorbent material such as synthetic resin, and as shown in FIG.
Opens at the back left corner of the machine room 15, and as shown in FIG.
The warm air outlet 46b opens at the upper left corner of the back of the evaporation dish storage chamber 42. Then, the warm air generated by the C fan device 44 is supplied to the left corner of the back portion of the evaporation dish storage chamber 42 through the C fan blower duct 46.

As shown in FIG.
As shown in, the cover member 47 is detachably attached. A blowout port is formed in the cover member 47, and the warm air supplied to the left corner of the back of the evaporation dish storage chamber 42 flows forward on the water surface of the evaporation dish 43 as shown by an arrow D, and blows. It is discharged from the outlet to the outside.

Next, the operation of the above configuration will be described. When the temperature in the freezer compartment 11g rises, the controller 34 causes the F
The temperature rise is detected based on the detection signal of the temperature sensor 33a, and the compressor 17 and the cooling fan motor 29b are operated. Then, the refrigerant enclosed in the refrigeration cycle 16 is compressed to a high temperature and high pressure state and supplied to the condenser 18. Then, the condenser 18 condenses the refrigerant, the dryer 19 adsorbs the water content of the refrigerant, and the capillary tube 20 sequentially performs the pressure drop and flow rate adjustment of the liquid refrigerant, and the pressure drop and flow rate adjusted refrigerant is used for the refrigerator refrigerating chamber evaporator. 21.

When the refrigerant is supplied to the refrigerator compartment evaporator 21, the refrigerant is supplied to the arrow B by the cooling fan device 29.
Heat is taken from the air flowing in the direction to generate cold air. Next, the refrigerant that has passed through the refrigerator compartment evaporator 21 is supplied to the gas-liquid separator 23, and is separated into the gas-liquid separator 23. Then, the separated gaseous refrigerant is returned to the compressor 17 (gas injection). Further, the liquid refrigerant separated by the gas-liquid separator 23 is supplied to the freezer compartment evaporator 22, and the cooling fan device 2
9 draws heat from the air flowing in the direction of arrow A,
Generates cold air.

When the cool air is generated by the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22, first, the cool air is blown from the inside of the cooler room 14 through the cool air outflow duct 28 into the cool air duct 27. Next, the R cool air duct 30
a, F cold air duct 30b, T cold air duct 30c, R / V
Refrigerating room 11e, chilled room 11 through cold air duct 30d
cold air is supplied to f, the freezing compartment 11g, and the vegetable compartment 11h, and F
Cold air return duct 31 and V cold air return duct 3
Cold air is returned to the cooler chamber 14 through 2. In this state, the controller 34 controls the R temperature sensor 33b and the T temperature sensor 33b.
The R damper 35a based on the detection signal of the temperature sensor 33c
Further, the T damper 35b is drive-controlled to keep the inside of the refrigerating chamber 11e and the inside of the chilled chamber 11f at a predetermined temperature.

The F return air (having a small water content) returned to the inside of the cooler chamber 14 through the F cool air return duct 31 is heat-exchanged with the freezer evaporator 22.
Further, the cooler chamber 14 is passed through the V cool air return duct 32.
R return air returned to the inside (with a high water content)
Is heat-exchanged with the refrigerator compartment evaporator 21. Therefore,
Frost is concentrated on the refrigerator compartment evaporator 21, and frost is less likely to adhere to the freezer compartment evaporator 22.

When the temperature in the freezer compartment 11g decreases while repeating the above operation, the controller 34 causes the F temperature sensor 3 to operate.
The temperature decrease is detected based on the detection signals of 3a and the R temperature sensor 33b, the compressor 17 and the cooling fan motor 29b are stopped, and the R glass tube heater 37 is caused to generate heat. Then, the frost attached to the refrigerator compartment evaporator 21 is melted, and the refrigerator pan evaporator 21 is drained from the refrigerator pan evaporator 21.
Defrosting water flows down to 0, and evaporating dish 4 passes through drain hose 41.
It is stored in 3.

When the C fan device 44 operates in this state, first, the outside air is sucked into the machine room 15, and the outside air is heated by the condenser 18 and the compressor 17 to generate hot air. Next, this warm air is supplied to the evaporation dish storage chamber 42 through the C fan blowing duct 46, flows forward on the water surface of the evaporation dish 43, and is discharged to the outside from the air outlet of the cover member 47.

Then, the defrosted water in the evaporation tray 43 is evaporated by the hot air flowing on the water surface of the evaporation tray 43 and is discharged from the outlet together with the warm air. After this, the refrigerator 2 evaporator 2
When the frost adhering to 1 is sufficiently removed and the temperature of the refrigerator compartment evaporator 21 rises, the control device 34 increases the temperature of the refrigerator compartment evaporator 21 based on the detection signal of the refrigerator compartment evaporator temperature sensor 39a. It is detected and the R glass tube heater 37 is cut off.

Further, the controller 34 controls the refrigeration cycle 16
When the predetermined time is reached, the F glass tube heater 38 is energized to heat the F glass tube heater 38. Then, the frost adhering to the evaporator 22 for the freezer is melted, supplied from the drain pan 40 through the drain hose 41 to the evaporation tray 43, and evaporated by the warm air supplied through the C fan blow duct 46. Each operation of the control device 34 described above is performed based on the software configuration of the control device 34.

According to the above embodiment, the cooler chamber 14 and the machine chamber 15 are arranged adjacent to each other in a plane. Therefore, the refrigeration cycle unit 13 (cooling unit 45) is thinned, and as a result, the height dimension of the refrigerator is reduced. Further, the cooling fan device 29 is independent of the cooling unit 45 and is arranged near the cool air outflow duct 28. Therefore, the evaporator 26 and the cooling fan device 2
9 and 9 are arranged at a predetermined interval. Therefore, as shown in FIG. 2, since the dead area of the evaporator 26 is eliminated,
The cooling efficiency of the refrigeration cycle 16 is improved. The improvement of the cooling efficiency of the refrigeration cycle 16 leads to the improvement of the volumetric efficiency accompanying the miniaturization (thinning) of the evaporator 26.

By the way, in FIG. 13, the cooler chamber 14 and the machine chamber 15 are arranged adjacent to each other in the left-right direction, and the cooling fan device 29 is housed in the cooler chamber 14. In the case of this configuration, since the cooling fan device 29 is housed in the cooler chamber 14, the cooling fan device 29 and the evaporator 26 are close to each other by about several tens of mm, and as a result, the evaporator 2
There is a dead zone at 6. Along with this, the cooling fan device 29
The depth dimension of the evaporator 26 is limited by the installation space. Therefore, it is necessary to supplement the cooling capacity of the evaporator 26 with the height dimension, and as a result, the cooling unit 45
The height dimension of is increased.

On the other hand, in this embodiment, the evaporator 2
Of course, the dead area 6 can be eliminated, and the depth dimension of the evaporator 26 is increased by the abolished space of the cooling fan device 29. Therefore, it becomes possible to supplement the cooling capacity of the evaporator 26 with an increased area, and there is no portion where the volumetric efficiency of the cooler chamber 14 deteriorates. From this point as well, it is possible to improve the cooling efficiency and reduce the thickness of the refrigeration cycle 16. .

FIG. 14 shows a cooler room 14 and a machine room 15
Are arranged adjacent to each other in the front-rear direction, and a cooling fan device 29 is installed on the side wall of the cooler chamber 14. With this configuration,
Since the cooler chamber 14 and the machine chamber 15 are arranged in a plane, the cooling unit 45 is thinned. However, since the cooling fan device 29 is mounted on the side wall of the cooler chamber 14, it is necessary to bend the air passage of the cooling fan device 29 to supply the cool air to the cool air outflow duct 28 and the cool air ducts 27, 30a to 30c. As a result, the pressure loss of the cooling fan device 29 increases. Since it is necessary to form a shelf bead on the side wall of the refrigerator main body 11 or to fix the drawer rail, the cold air outflow duct 28, the cold air duct 27,
30a to 30c must be provided on the back heat insulating wall 11j.

On the other hand, in this embodiment, the cooler chamber 14 and the machine chamber 15 are arranged adjacent to each other in the left-right direction. For this reason,
The back heat insulating wall 11j of the refrigerator main body 11 without structural restrictions
The cold air outflow duct 28, the cold air ducts 27, 30a to 30
It is possible to dispose the cooling fan device 29 on the back surface of the cooler chamber 14 by providing c. Therefore, the installation of the cool air outflow duct 28 and the cool air ducts 27, 30a to 30c is facilitated, the pressure loss of the cooling fan device 29 is reduced, and as a result, the cooling performance is improved. The pressure loss is reduced by the cool air outflow duct 28, the cool air ducts 27, 30a.
.About.30c is reduced in size (cross-sectional area is reduced), volumetric efficiency is improved, and cooling fan motor 29b is reduced in power input, resulting in power saving.

Further, in the case of the refrigerator shown in FIG. 13, since the cooling fan device 29 is housed in the cooler chamber 14,
The damper device 35 and the cooling fan device 29 provided on the refrigerator main body 11 side are separately arranged. Therefore, the peripheral portion of the damper device 35 and the cooling fan device 29
A wasteful space is created in each of the surrounding areas. On the other hand, in this embodiment, the cooling fan device 29 is arranged adjacent to the damper device 35. Therefore, the wasted space is reduced, so that the volumetric efficiency is improved and the usability is also improved.

The cooling fan device 29 is arranged at the corner of the cool air duct 27. Therefore, the pressure loss of the cooling fan device 29 is reduced by the wall surface of the cool air duct 27, and as a result, the cooling performance is further improved. Further, the cooler room 14 and the machine room 15 are arranged above the refrigerator body 11. Therefore, the present invention can be applied to the Comptop refrigerator. Further, the center line α1 of the cooling fan device 29 is aligned with the center line α2 of the evaporator 26. Therefore, the flow of the air flowing through the refrigerator compartment evaporator 21 and the freezer compartment evaporator 22 is made uniform, and as a result, the cooling efficiency of the refrigeration cycle 16 is further improved.

Next, a second embodiment of the present invention will be described with reference to FIG. The same members as those in the first embodiment will be designated by the same reference numerals and description thereof will be omitted. Only different members will be described below. The center line α1 of the cooling fan device 29 is inclined toward the center side of the refrigerator main body 11 by a predetermined angle θ with respect to the center line α2 of the evaporator 26.

According to the above embodiment, the cooling fan device 29
The center line α1 of the cooling fan device 29 is inclined in the air blowing direction (to the left of the cool air duct 27). Therefore, the cooling fan device 29 is different from the first embodiment in which the blowing direction of the cooling fan device 29 is set to be different from the center line α1.
The pressure loss of is reduced. Moreover, the cooling fan device 29
Since the center line α1 of the above is completely oriented in the air blowing direction, there is no fear of impairing the uniformity of the air flow supplied to the evaporator 26.

Although the cooling fan device 29 is arranged in the cool air duct 27 in the first and second embodiments, the invention is not limited to this. For example, the cooling fan device 29 may be arranged in the cool air outflow duct 28,
The point is that it may be in the vicinity of the cool air outflow duct 28.

Further, in the first and second embodiments, the cooler chamber 14 and the machine chamber 15 are arranged above the refrigerator body 11, but the invention is not limited to this. It may be arranged at the central part of the above or below the refrigerator main body 11.

[0059]

As is apparent from the above description, the refrigerator of the present invention has the following effects. According to the means described in claim 1, the machine room and the cooler room are arranged adjacent to each other in a plane. Therefore, the refrigeration cycle storage section is made thin. Moreover, the fan device is arranged near the cold air outlet. Therefore, the dead region of the evaporator and the portion where the volumetric efficiency of the cooler chamber is deteriorated are eliminated, and as a result, the cooling efficiency of the refrigeration cycle is improved.

According to the second aspect, the cooler chamber and the machine chamber are arranged adjacent to each other in the left-right direction. For this reason, a cool air duct can be provided on the back heat insulating wall in the refrigerator to allow cool air to flow from the front side to the back side of the cooler chamber. Therefore, the installation of the cold air duct is facilitated, and
The pressure loss of the fan device is reduced, resulting in improved cooling performance. According to the third aspect, the fan device is arranged at the corner of the cool air duct. For this reason,
The wall surface of the cool air duct reduces the pressure loss of the fan device, resulting in improved cooling performance.

According to the means described in claim 4, the damper is arranged adjacent to the fan device. Therefore, wasted space is reduced, and as a result, volumetric efficiency is improved. According to the means described in claim 5, the cooler room and the machine room are arranged above the refrigerator body. Therefore, the present invention is applied to the comp top refrigerator.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a refrigeration cycle unit.

FIG. 3 is a cross-sectional view showing a cold air supply duct.

[Figure 4] Vertical side view

FIG. 5 is a vertical sectional side view showing a machine room.

FIG. 6 is a diagram showing a connection state of a refrigeration cycle.

FIG. 7 is a top view showing a refrigerator evaporator and a refrigerator evaporator.

FIG. 8 is a perspective view showing the positional relationship between a refrigerator compartment evaporator and a freezer compartment evaporator.

FIG. 9 is a vertical sectional front view showing a refrigeration cycle unit.

FIG. 10 is a block diagram schematically showing an electrical configuration.

FIG. 11 is a diagram showing operation timings of a compressor and a glass tube heater.

FIG. 12 is a view corresponding to FIG. 3 showing a second embodiment of the present invention.

13 is a view corresponding to FIG. 2 showing a state in which a cooling fan device is housed in a cooler chamber.

14 is a view corresponding to FIG. 2 showing a state in which a cooler room and a machine room are adjacently arranged in the front-rear direction.

FIG. 15 is a view corresponding to FIG. 9 showing a conventional example.

FIG. 16 is a transverse sectional view of the cooler chamber.

[Explanation of symbols]

Reference numeral 11 is a refrigerator main body, 13 is a refrigeration cycle unit (refrigeration cycle storage section), 14 is a cooler room, 15 is a machine room, 1
6 is a refrigerating cycle, 21 is a refrigerator compartment evaporator (cooler), 22 is a refrigerator compartment evaporator (cooler), 26 is a cooler unit, 27 is a cool air duct, 28 is a cool air outflow duct (cold air outlet), 29 Is a cooling fan device (fan device), 30a is an R cold air duct (cold air duct), 30c is a T cold air duct (cold air duct), 35a is an R damper (damper), and 35b is a T damper (damper).

Claims (5)

[Claims] 1. A refrigeration cycle storage unit in which a refrigeration cycle is stored, a fan device for supplying cool air generated by a cooler into a refrigerator through a cool air outlet, and a cool air through which the cool air supplied by the fan device flows. A duct, the refrigeration cycle storage unit has a cooler chamber in which a cooler unit of the refrigeration cycle is stored and a machine room planarly arranged adjacent to the cooler chamber, the fan device, A refrigerator arranged near the cold air outlet. 2. The refrigerator according to claim 1, wherein the cooler room and the machine room are arranged adjacent to each other in the left-right direction. 3. The refrigerator according to claim 1, wherein the fan device is arranged at a corner of the cold air duct. 4. The refrigerator according to claim 1, further comprising a damper that controls opening and closing of the cool air outlet, and a fan device disposed adjacent to the damper. 5. The refrigerator according to any one of claims 1 to 4, wherein the refrigerating cycle storage section is arranged on an upper part of the refrigerator body.