JP5575532B2 - refrigerator - Google Patents

Description

  Embodiments of the present invention relate to a refrigerator.

  In a conventional refrigerator, when a condenser is installed in a machine room, a blower fan for cooling the compressor is installed so as to blow in the width direction of the refrigerator, and an evaporating dish for defrosted water is disposed downstream of the blower fan. The condenser is installed above the evaporating dish.

JP 2009-79778 A

  In the refrigerator described above, when air is sucked from the bottom surface of the machine room, the capacitor is enlarged in the air stream direction in order to secure the area of the capacitor. For this reason, it is difficult to secure the area of the capacitor orthogonal to the air stream direction, that is, the front surface of the capacitor, the difference between the air temperature near the outlet of the capacitor and the capacitor temperature is reduced, and heat dissipation performance is difficult to improve. There is a problem.

  Therefore, in view of the above problems, the present invention provides a refrigerator in which a capacitor can be installed in a machine room while improving heat dissipation performance.

The embodiment of the present invention is provided at the rear of the cabinet, and partitions the machine room in which the compressor in the refrigeration cycle is disposed, and the machine room and the refrigerator interior, and is disposed so as to be inclined rearward as the upper part. A front wall of the machine room, and a duct in the machine room that is inclined rearward toward the upper part along the front wall, with an air outlet opened at the upper part and an air inlet opened at the lower part, A condenser in the refrigeration cycle housed in the duct and disposed along the inclination direction of the duct, and a fan that is disposed in the machine room and behind the duct and blows air from the duct backward If, have a, the capacitor is a refrigerant tube in which the refrigerant of the refrigeration cycle flows, provided in the refrigerant tubes, and a plurality of radiating fins that are disposed in parallel to each other A space between the heat radiating fins, wherein are formed along the streamlines direction of the air in the duct, a refrigerator and having a refrigerator, characterized in that.

It is the longitudinal cross-sectional view seen from the side of the machine room in Example 1 of this invention. It is a cross-sectional view of the machine room as seen from above. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. 1 is a diagram of a refrigeration cycle in Example 1. FIG. It is the longitudinal cross-sectional view seen from the side of the machine room in Example 2. FIG. 6 is a cross-sectional view of a machine room in Embodiment 3. FIG. FIG. 10 is a cross-sectional view of a machine room in Example 4. FIG. 10 is a longitudinal sectional view of a machine room as viewed from the rear in Example 5.

  Hereinafter, the refrigerator 10 of one Example of this invention is demonstrated based on drawing.

  The refrigerator 10 which concerns on Example 1 of this invention is demonstrated based on FIGS.

(1) Structure of the refrigerator 10 The cabinet 12 of the refrigerator 10 of the present embodiment is formed of an outer box and an inner box, and a heat insulating panel 13 is housed between the outer box and the inner box. The inside of the cabinet 12 is partitioned into, for example, a refrigeration space and a freezing space from above, a refrigerating space and a vegetable room are provided in the refrigerating space, and an ice making room and a freezing room 14 are formed in the freezing space.

  A machine room 16 is formed at the rear part of the bottom of the cabinet 12, that is, behind the freezing room 14. A compressor or the like in the refrigeration cycle 18 is disposed inside the machine room 16.

(2) Structure of the machine room 16 Next, the structure of the machine room 16 is demonstrated based on FIGS.

  The machine room 16 provided in the rear part at the bottom of the cabinet 12 is surrounded by a bottom plate 21, a front wall 22, a ceiling wall 24, both side walls 26 and 28, and a back plate 30 that is detachable from the machine room 16. Yes. The front wall 22 is a partition between the machine room 16 and the freezer compartment 14 at the front. The front wall 22 and the ceiling wall 24 are formed of a single metal plate, the ceiling wall 24 is disposed horizontally, and the front wall 22 is disposed so as to be inclined rearward as the upper portion thereof.

  A compressor 20 is disposed in one space (the left space in FIGS. 2 to 4) in the machine room 16. A plurality of air discharge ports 54 are opened in the side wall 26 in the left space.

  In the rear part of the other space in the machine room 16 (right space in FIGS. 2 to 4), a partition wall 36 erected vertically and along the left-right direction, and a left end portion of the partition wall 36 A partition side wall 38 erected toward the front wall 22 is provided, and is partitioned from the left space and the front portion of the right space of the machine room 16 in which the compressor 20 is disposed.

  In the rear part of the right side space of the machine room 16 divided by the partition wall 36 and the partition side wall 38, a duct wall 32 erected in parallel obliquely along the front wall 22 is provided. The duct wall 32 is provided so as to be inclined rearward in the upper part, like the front wall 22. The height of the duct wall 32 is lower than that of the front wall 22, and an air outlet 34 is opened between the duct wall 32 and the ceiling wall 24. A duct 42 is formed by the duct wall 32 and the front wall 22. Note that the duct wall 32 may not be parallel to the front wall 22 as in the present embodiment.

  On the bottom plate 21 of the duct 42, which is a space between the duct wall 32 and the front wall 22, that is, in the front part of the bottom of the machine room 16, a plurality of elliptical air inlets 40 are opened along the left-right direction. ing. Thus, the air inlet of the duct 42 communicates with the intake port 40.

  Inside the duct 42, a capacitor 48 having an overall shape of a rectangular parallelepiped is accommodated along the streamline direction of air flowing through the duct 42. The capacitor 48 is a fin tube in which a plurality of plate-like heat radiation fins 46 are attached in parallel to a refrigerant tube 44 made of aluminum that is bent a plurality of times. The refrigerant of the refrigeration cycle 18 flows through the refrigerant tube 44 of the condenser 48.

  The partition wall 36 is provided with a blower fan 50 that cools the compressor 20 and the condenser 48 and blows air from the front to the rear. In addition, an evaporating dish 52 for storing defrosted water is disposed in front of the partition wall 36. The duct wall 32 described above is higher than the blower fan 50 and is disposed so as to cover the blower fan 50.

(3) Configuration of Refrigeration Cycle 18 Next, the configuration of the refrigeration cycle 18 will be described with reference to FIG.

  The refrigeration cycle 18 includes a compressor 20 that compresses and sends a gaseous refrigerant to a high temperature and a high pressure, a condenser 48 that condenses the gaseous refrigerant into a liquid refrigerant, a heat radiating pipe 54 that radiates the heat of the liquid refrigerant, and dew prevention. The pipe 56, the capillary tube 58 for decompressing the liquid refrigerant, and the evaporator 60 for vaporizing and cooling the liquid refrigerant are connected in order, and finally connected to the compressor 20 via the suction pipe 61.

(4) Air Flow in Machine Room 16 Next, the air flow in the machine room 16 will be described.

  When the blower fan 50 rotates, air is sucked from the air inlet at the bottom of the duct 42, that is, the plurality of air inlets 40, and passes through the condenser 48. In this case, since the space formed by the plurality of radiating fins 46 arranged in parallel to each other is parallel to the streamline direction of the air sucked from the intake port 40, the air easily flows and the radiating fins 46 Heat is taken away efficiently and reaches the air outlet 34 of the duct 42. The air that has reached the air outlet 34 passes through the blower fan 50, passes through the upper part of the evaporating dish 52, forcibly evaporates the defrost water, and further cools the compressor 20 as it passes through the compressor 20. It is discharged from the discharge port 54.

(5) Effects According to the present embodiment, by storing the capacitor 48 in the duct 42, the volume of the capacitor 48 is reduced, and the internal volume other than the machine room 16 can be expanded.

  Further, the capacitor 48 can be efficiently cooled by the air passing through the duct 42. In this case, the air flows along the space formed by the plurality of heat radiating fins 46 arranged in parallel to each other. The heat dissipation performance is further improved.

  Further, since the capacitor 48 employs the fin tube format, the volume of the capacitor 48 can be reduced and the internal volume can be increased.

  Further, since the refrigerant tube 44 of the condenser 48 is made of aluminum, it can be reduced in weight and size.

  Moreover, as shown in FIG. 1, since the air flow in the depth direction is substantially S-shaped, the air blowing distance becomes longer, and heat radiation is performed during that time, so that the heat radiation performance is further improved.

  Moreover, since the evaporating dish 52 is provided in the position where the wind speed blown out by the blower fan 50 is the strongest, evaporation of defrost water can be further promoted.

  Next, the refrigerator 10 which concerns on Example 2 of this invention is demonstrated based on FIG.

  The difference between the present embodiment and the refrigerator 10 of the first embodiment is in the arrangement of the capacitors 48 whose overall shape is a rectangular parallelepiped.

  The capacitor 48 of Example 1 was arranged along the inclination direction of the duct 42.

  On the other hand, as shown in FIG. 6, in the present embodiment, a slightly raised state with respect to the inclination direction of the duct 42, that is, the rectangular parallelepiped capacitor 48 is arranged to be inclined with respect to the duct 42 or the front wall 22. Yes. Thereby, it arrange | positions in the state inclined with respect to the streamline direction of the air which goes to the air outlet 34 from the inlet 40 which is an air inlet.

  According to the present embodiment, since the capacitor 48 is inclined with respect to the air stream direction, the surface of the capacitor orthogonal to the air stream direction, that is, the area of the front surface of the capacitor can be enlarged. The heat dissipation performance of the capacitor 48 can be further improved.

  Next, the refrigerator 10 which concerns on Example 3 of this invention is demonstrated based on FIG.

  The difference between the present embodiment and the first embodiment is the arrangement of a plurality of intake ports 40.

  As shown in FIGS. 2 and 4, the intake port 40 according to the first embodiment has the intake ports 40 opened at positions corresponding to the radiation fins 46.

  On the other hand, as shown in FIG. 7, the dimension in the front-rear direction of the elliptical intake port 40 of the present embodiment is almost the same as the thickness dimension of the capacitor 48, and the width direction of the intake port 40 is It is set to be equal to or less than the fin pitch of the 48 radiating fins 46. The plurality of air inlets 40 are equally spaced from the fin pitch, open between the heat radiating fins 46, and further open side by side in the entire width direction of the capacitor 48.

  According to the present embodiment, dust having a width of the radiating fin 46 is filtered by the intake port 40, so that the adhesion of dust to the radiating fin 46 of the capacitor 48 can be reduced.

  In addition, filter means may be separately arranged upstream of the capacitor 48.

  Next, the refrigerator 10 which concerns on Example 4 of this invention is demonstrated based on FIG.

  The difference between the present embodiment and the refrigerator 10 of the first embodiment is the arrangement of the blower fan 50 and the partition wall 36.

  In Example 1, as shown in FIG. 2, the axial direction of the blower fan 50 was provided in the front-rear direction of the refrigerator 10.

  On the other hand, as shown in FIG. 8, in this embodiment, the partition wall 36 is provided with a slight inclination with respect to the front-rear direction, whereby the axial direction of the blower fan 50 is inclined with respect to the front-rear direction. 50 is arranged so that the direction of the air stream line 50 faces the inside of the machine room 16.

  According to the present embodiment, since the axial direction of the blower fan 50 is directed to the inside of the machine room 16, air hits the compressor 20, and the compressor 20 can be further cooled.

  Next, the refrigerator 10 of Example 5 of this invention is demonstrated based on FIG.

  The difference between the present embodiment and the refrigerator 10 of the first embodiment is in the arrangement of the radiation fins 46.

  In the first embodiment, as shown in FIG. 4, the distance between the upstream side radiation fins 46 attached to the refrigerant tube 44 and the distance between the downstream side radiation fins 46 are the same.

  On the other hand, as shown in FIG. 9, in the present embodiment, the interval between the radiating fins 46 on the downstream side is narrower than the interval between the radiating fins 46 on the upstream side.

  According to the present embodiment, the heat radiation performance can be further improved by narrowing the distance between the heat radiation fins 46 toward the downstream side.

Example of change

  The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist thereof.

  In the fifth embodiment, the distance between the heat dissipating fins 46 is narrower toward the downstream side. However, the present invention is not limited to this, and the heat dissipating fins 46 on the upstream side and the heat dissipating fins 46 on the downstream side are arranged in a staggered manner, and air flows between them. You may do it.

  In each of the above embodiments, the air inlet 40 is opened at the front portion of the bottom plate 21 of the machine room 16. However, the present invention is not limited to this, and an air inflow duct is provided below the bottom of the cabinet 12. May be opened at the front surface of the cabinet 12, and this air inflow duct may be communicated with the air inlet of the duct 42.

  DESCRIPTION OF SYMBOLS 10 ... Refrigerator, 12 ... Cabinet, 16 ... Machine room, 18 ... Refrigeration cycle, 20 ... Compressor, 22 ... Front wall, 32 ... Duct wall, 34 ... Air outlet, 36 ... partition wall, 38 ... partition side wall, 40 ... intake port, 42 ... duct, 44 ... refrigerant tube, 46 ... radiation fin, 48 ... condenser, 50 ... Blower fan

Claims (5)

A machine room provided at the rear of the cabinet and provided with a compressor in the refrigeration cycle;
While partitioning the machine room and the interior of the refrigerator in the front and back, the front wall of the machine room arranged to be inclined rearward toward the upper part ,
In the machine room, the duct is formed so as to be inclined rearward toward the upper part along the front wall, an air outlet is opened at the upper part, and an air inlet is opened at the lower part,
A condenser in the refrigeration cycle housed in the duct and disposed along an inclination direction of the duct ;
A fan that is arranged behind the duct in the machine room and blows air from the duct backward;
I have a,
The capacitor includes a refrigerant tube through which the refrigerant of the refrigeration cycle flows, and a plurality of radiating fins provided in the refrigerant tube and parallel to each other, and a space between the radiating fins is in the duct. Formed along the streamline direction of air,
A refrigerator characterized by that. An intake port for sucking air into the machine room opens at the front bottom of the machine room and communicates with the air inlet of the duct;
The refrigerator according to claim 1. The space between the heat dissipating fins is formed along the direction of air flow from the air inlet to the air outlet of the duct.
The refrigerator according to claim 1. The capacitor is housed in an inclined manner with respect to the direction of air flow from the air inlet to the air outlet of the duct.
The refrigerator according to claim 1. The intake port of the multiple has opened respectively between the plurality of the heat radiating fins,
The refrigerator according to claim 2.

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