KR100763695B1 - Refrigerator - Google Patents

Abstract

By improving the layout relationship and structure in the machine room such as the refrigerant compressor, the heat radiating fan and the condenser, the heat dissipation efficiency in the machine room is improved and each element part is compactly installed to reduce the machine room space. Provides a refrigerator that can be enlarged, compactly installs the parts arranged in the machine room, reduces the machine room space, expands the storage capacity of the machine, and cuts off the supply of external air by a heat radiating fan that cools the inside of the machine room. Even if it is, by providing a refrigerator that can air-cool the inside of the machine room,

A condenser arranged along the back wall on the other side of the machine chamber 15 formed in the lower part of the rear surface of the refrigerator main body 1, the refrigerant compressor 12 provided in proximity to one of the width directions in the machine chamber, and the width direction of the machine chamber ( 13) and a heat dissipation fan 18 disposed to face the condenser so that the axial flow is in the front-rear direction of the main body, wherein the heat dissipation fan is configured to blow air by sucking the air sucked from the bottom of the main body to the condenser and the compressor. The machine room 15 is formed at a lower position than the machine chamber 15 formed in the lower rear surface of the refrigerator main body 1, the refrigerant compressor 12 and the refrigerant compressor 12 arranged in proximity to one of the width directions in the machine room 15. A condenser 13 arranged along the rear wall on the other side in the width direction of the width direction of 15, and a heat dissipation fan 18 arranged so as to face the condenser 13 so that the axial flow is in the front-rear direction of the main body. At the bottom of (1) The heat dissipation fan 18 forms a suction port 21 for sucking air in the machine room 15, and at the same time, the lower air vent is positioned at the rear wall 23 of the machine room 15 opposite the refrigerant compressor 12. When the upper vent 25B is formed at the position facing the condenser 13, respectively, and the supply of air from the inlet 21 is cut off, the lower vent 28B is caused by natural convection. The sucked air is passed through the compressor 12 and the condenser 13 so as to be discharged from the upper vent 25B.

Description

Refrigerator {REFRIGERATOR}

1 is a longitudinal cross-sectional view of a refrigerator showing one embodiment and another embodiment of the present invention;

Figure 2 is a perspective view of the machine room of the refrigerator of Figure 1 seen from the back direction,

3 is an enlarged longitudinal sectional view of the machine room part in FIG. 2;

4 is a cross-sectional view of the compressor portion of the machine room in FIG. 2, FIG.

5 is a perspective view illustrating a state in which a cover body is attached to a machine room part of FIG. 2;

FIG. 6 is a cross-sectional view of a portion of a printed wiring board in FIG. 2; FIG.

7 is a sectional view of a freezer compartment part seen from the front,

8 is a perspective view of the machine room of the refrigerator of another embodiment of the present invention of FIG.

9 is an enlarged longitudinal sectional view of the machine room part in FIG. 8;

10 is a cross sectional view of the compressor part of the machine room in FIG. 8;

11 is a schematic longitudinal cross-sectional view illustrating the condenser configuration in FIG. 9;

12 is a perspective view of a comp table for explaining a fixing configuration of a fan casing;

13 is a perspective view showing a main part of the machine room;

14 is a perspective view of a comparator for explaining a fixed configuration of the evaporating dish;

15 is a cross-sectional view showing a state in which an evaporating dish is fixed to a comparator,

16 is a perspective view illustrating a state in which a cover body is attached to a machine room part of FIG. 8;

17 is an enlarged perspective view of a main part of a refrigerator;

18 is an exploded perspective view showing the attachment state of the forelimbs,

19 is a perspective view showing a handle fixed to the outer box bottom plate,

20 is an enlarged cross-sectional view of an essential part of a refrigerator illustrating a fixing state of a handle;

21 is a rear view showing a machine room of a conventional refrigerator and

22 is a longitudinal cross-sectional view of FIG. 21.

* Explanation of symbols for the main parts of the drawings

1: refrigerator body 2: outer box

2a: thick plate 2b: bottom

3, 3a: insulation wall 4: inner box

4a: inner box bottom 7: freezer

8,9: cooler 12: compressor

13: condenser 15: machine room

16: comp 17: staircase

18: heat dissipation fan 19: evaporating plate

19a: step 19b: barrier bank

20: fan casing 20a: small hole

21: suction port 22: recess

23: cover body 23a: partition rib

24: duct 25: air outlet A

25B: Upper vent 26: Drain pipe

27: printed wiring board 28: air outlet B

28B: Down vent 29: Forelimb

30: protrusion

In recent years, the size of a general household refrigerator is remarkable, and its size is limited from the relationship of the kitchen space. Therefore, as a measure to further increase the storage capacity, various measures such as reducing the thickness of insulation by using a material having high insulation performance such as a vacuum insulation panel and reducing the waste space by enlarging the interior volume or improving the layout of components inside and outside the interior This is under review.

As shown in FIG. 21 or FIG. 22, the patent applicant also has the refrigerant compressor 52 close to one side in the width direction of the machine chamber 55 formed in the lower rear side of the refrigerator main body 51, and the inside of the storage chamber is installed. The cooler 59 to cool is arrange | positioned above the compressor 52 above, on the opposite side to the width direction of the compressor, and is installed in the bottom part of a main body by making the condenser 53 into flat plate shape, and also being a refrigerator The control power supply board 57 of the cooler 59, the compressor 52, the condenser 53, and the control power supply board 57 by arranging the control power supply board 57 in a wide space on the other side of the compressor in the width direction in the machine room 55. By changing the layout relationship or structure, the present invention has proposed a refrigerator that can reduce the thermal loss of the cooler 59 and improve the thermal insulation efficiency, and at the same time, improve the heat dissipation efficiency of the machine room 55 or the condenser 53 and obtain a power saving effect. (Japanese Patent Laid-Open No. 2005-98559 ).

However, in the structure of JP 2005-98559 A, the condenser 53 is provided at the bottom of the refrigerator main body 51 and is disposed upstream of the heat dissipation fan 58. 53) The airflow through the air was intake, so the wind was weak and the heat dissipation efficiency was low. Therefore, in order to obtain a predetermined amount of heat dissipation, it is necessary to increase the capacity of the condenser itself, and there is a disadvantage that the occupied space becomes large and the parts cost becomes high.

In addition, when the flat condenser 53 is disposed on the bottom of the main body in order to increase the heat dissipation area, the condenser 53 generates a portion of the heat dissipation fan 58 that does not undergo heat exchange due to blowing. In addition, since the heat exchange is insufficient, the atmospheric temperature of the portion becomes high, and there is a new problem that the heat insulating performance into the interior is lowered.

On the other hand, since the heat radiating fan 58 is provided adjacent to the compressor 52 so as to be axially flowed in the width direction of the main body in the machine room 55, the depth and height of the heat radiating fan 58 and the fan casing 60 are large. In this respect, the contribution to the expansion of the effective volume in the furnace was low, without leading to a reduction in the machine room space.

In addition, another conventional example has a configuration in which a condenser is stored in a machine room together with a compressor or a heat radiating fan. However, in this case, the height of the machine room is increased and the machine room space is still high because an evaporation plate must be installed in the upper part of the compressor due to space limitations. The downsizing did not lead to.

In addition, in the configuration of Japanese Unexamined Patent Publication No. 2005-98559, the flat condenser 53 is disposed almost all over the bottom of the main body in order to enlarge the heat dissipation area, but the width of the heat dissipation fan 58 is large. The part which does not heat-exchange even by blowing is generated in the condenser 53. FIG. In addition, due to insufficient heat exchange, there is a problem in that the atmospheric temperature of the portion is increased, the heat insulation performance into the interior is lowered, and the volume of the condenser itself is large, resulting in a large occupied space and a high component cost.

Moreover, since the suction port which blows in external air in the inside of a machine room is normally arrange | positioned in the place which is difficult to clean, such as the bottom or the back of a refrigerator main body, it may be left uncleaned for a long time. In such a case, a large amount of dust is deposited at the inlet to block the supply of external air, and the heat dissipation of the condenser or the like is hindered, thereby causing a problem in that the refrigerating power is significantly reduced.

The present invention has been made in view of the above points, and by improving the arrangement or structure in the machine room such as a refrigerant compressor, a heat radiating fan, and a condenser, it is possible to improve the heat dissipation efficiency in the machine room and to install each element compactly. It is an object of the present invention to provide a refrigerator capable of reducing the machine room space and increasing the storage capacity therein.

In addition, the present invention has been made in view of the above circumstances, and by improving the arrangement structure in a machine room such as a refrigerant compressor, a heat radiating fan, and a condenser, it is possible to improve the heat dissipation efficiency in the machine room and to compact each of the mounting parts arranged in the machine room. It is installed in such a way as to reduce the space of the machine room, increase the storage volume within the machine room, and naturally convection the outside air inside the machine room even when clogging occurs at the inlet for injecting the outside air into the machine room. An object of the present invention is to provide a refrigerator capable of cooling mounting parts such as a condenser arranged indoors.

In order to solve the above problems, the refrigerator of the present invention includes a machine chamber formed under the rear surface of the refrigerator main body, a refrigerant compressor installed in proximity to one of the width directions in the machine chamber, and a condenser arranged along the rear wall on the other side of the machine chamber in the width direction. And a heat dissipation fan disposed to face the condenser so that the axial flow is in the front-rear direction of the main body, wherein the heat dissipation fan is configured to blow air inhaled from the bottom of the main body to the condenser and the compressor.

In addition, the refrigerator of the present invention has a machine chamber formed in the lower rear side of the refrigerator main body, a refrigerant compressor disposed close to one of the width direction in the machine chamber, and a rear wall of the other side in the width direction of the machine chamber at a position higher than the refrigerant compressor. Thus, the condenser is disposed, and a heat dissipation fan disposed so as to face the condenser so that the axial flow is in the front-rear direction of the main body, and at the bottom of the refrigerator main body, a heat dissipation fan forms an inlet for sucking air into the machine room. On the rear wall of the machine room, a downward vent is formed at a position opposite to the refrigerant compressor, and an upper vent is formed at a position opposite to the condenser, and when the supply of air from the suction port is blocked, the downward vent is caused by natural convection. The air sucked from the air is blown to the compressor and the condenser so as to be discharged from the upper vent.

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment of this invention is described based on drawing. In addition, the same code | symbol is attached | subjected to the same component all over the drawing. The refrigerator main body 1 which shows the perspective view of the machine room part from the back side in FIG. 1 and the back side in FIG. 2 is a storage space by the inner box 4 installed in the inner surface of the outer box 2 through the heat insulation wall 3. Is formed and divided into a plurality of storage chambers such as the refrigerating chamber 5, the vegetable chamber 6, and the freezing chamber 7 by the partition wall.

Each storage compartment is cooled and maintained at a predetermined set temperature by the refrigerating cooler 8, the freezing cooler 9, and the fans 10 and 11 arranged in each of the refrigerating and freezing spaces. ) Is supplied with a refrigerant by operation of a refrigeration cycle consisting of a compressor 12, a condenser 13, and the like.

The compressor 12 in the refrigeration cycle is installed in the machine room 15 formed in the lower back of the refrigerator main body 1, and is attached to the comparator 16 provided over the width direction of the main body via a cushioning body. .

The condenser 13 receives the high temperature and high pressure refrigerant gas from the compressor 12 to dissipate it and condenses it. The refrigerant from the condenser 13 passes through a capillary tube, which is a pressure reducing tube, or a refrigeration cooler 8 or refrigeration in each storage compartment. Cooling the inside of the storage chamber to a predetermined air temperature by supplying it to the cooling cooler 9 and evaporating the wires as heat radiating fins on both sides of the meandering coolant tube to polymerize the flat plate into three layers. The upper part of the machine room 15 is placed upright.

However, the machine room 15 is a stepped section 17 protruding toward the freezer compartment 7 below the rear surface of the main body, as shown in the longitudinal cross-sectional view of the main part in FIG. 3 and the cross-sectional view of the compressor 12 portion below in FIG. 4. And a space having a predetermined depth and height extending in the width direction by the step portion 17, and approaching one side of the width direction of the space in the machine room 15 to the refrigerant compressor 12. And the heat dissipation fan 18, the condenser 13, and the defrost water, which introduce the outside air into the machine room 15, using the other wide space side from the compressor as the heat dissipation duct. An evaporating dish 19 or the like is provided.

The heat dissipation fan 18 forms a slight gap between the step portion 17, and installs a circumferential edge on the upper and lower surfaces of the machine room 15 so that the left and right portions contact the step portion 17. 15) It is attached to the bell mouse of the fan casing 20 which partitioned inside and outside, and is arrange | positioned so that an axial flow may become the front-back direction of the machine room 15. As shown in FIG.

The inlet port 21 of the outside air made up of a plurality of openings across the width of the fan casing 20 is provided on the comp table 16 in front of the bottom of the fan casing 20 to which the heat radiating fan 18 is attached.

At the rear of the heat dissipation fan 18, the three-layer flat condenser 13 is disposed to face the condenser 13, and the condenser 13 opposes the lower end thereof to the heat dissipation fan 18, and the upper portion thereof is larger than the machine room 15. It extends to the upper side and is installed upright along the recessed part 22 formed in the outer box thick plate 2a.

The distribution of the machine room 15 is covered with a cover body 23, as shown in the perspective view of Figure 5, the cover body 23 is installed to cover up to the upper end of the condenser 13, the outer box rear plate at the top An opening is formed between (2a), and an air outlet A (25) connected to the duct (24) formed by the recess (22) and the cover body (23) of the thick plate on which the condenser (13) is placed upright is formed. have.

At this time, the center position of the heat dissipation fan 18 with respect to the center position in the width direction of the condenser 13 mounted on the back side is close to the outer box side plate side of the vicinity, and the heat dissipation fan according to the shape of the cover 23. It arrange | positions so that the airflow blown out from (18) may flow toward the center direction slightly of the width | variety of the refrigerator main body.

Then, on the comp table 16 below the heat dissipation fan 18 and the condenser 13, an evaporating plate 19 for receiving the defrost water from the coolers 8 and 9 is evaporated. The evaporating plate 19 is configured to extend the discharge pipe 26 from the compressor 12 therein to be immersed in water, to evaporate the defrost water by the heat of the high temperature refrigerant, and the bottom of the rear surface of the inner surface is entirely The step portion 19a is provided so as to be higher than the front portion. In the vicinity of the stepped portion 19a, a partition bank 19b is provided to divide the inside of the dish into a plurality of container portions, and the defrost water is usually concentrated in the shallow bottom container on the rear side to intensively evaporate the defrost water. In the case where a large amount is obtained, the capillary overflows the weir 19b from the back side and flows to all sides, thereby maintaining the storage capacity corresponding to the maximum amount of defrosting assumed.

In addition, as shown in FIG. 6 in a cross-sectional view of the corresponding portion at an upper position than FIG. 4, the operation of the refrigerator is performed in the recess 22 of the rear plate located above the compressor 12 adjacent to the condenser 13. A printed wiring board 27 mounted with a controlling power supply circuit, an inverter switching circuit, a motor control circuit, a rectifying circuit, or the like is disposed along the outer box thick plate 2a and covered with a cover 23. Between the condenser 13 and the wiring board 27 on the inner surface side of the cover body 23, a partition between the upper and lower ribs 23a is provided, and a part of the upper portion where the air flow from the heat radiating fan 18 is divided left and right. The membrane is introduced into the printed wiring board 27 from the lower end of the rib 23a to act to cool it.

The printed wiring board 27 is conventionally provided at the ceiling or the rear upper portion of the refrigerator main body 1, and needs to be connected to the electrical components installed in the machine room 15 in multiple lines, and the longer the distance between the connections is, Although there was a drawback that the multi-line treatment in the heat insulation wall 3 and the like became complicated, the number of working steps increased and the multi-line cost increased, according to the above configuration, the invalid space on the side of the condenser 13 can be effectively utilized. Since effective heat dissipation is possible, the reliability of the electronic component is improved, and the cost can be reduced and the size of the wiring board can be reduced, such as the reduction of the heat dissipation plate on the substrate 27. In addition, since the installation position of the printed wiring board 27 becomes a portion close to the machine room 15 with many electrical parts, the length of the bundle can be shortened and the cost can be reduced. It is possible to reduce, and to prevent the deterioration caused by the absorption of moisture in the urethane foam insulation (3).

Each component in the machine room 15, the condenser 13, and the printed wiring board 27 are provided as described above, and when the heat radiating fan 18 is rotated, as shown by the arrows in Figs. External air in front of the refrigerator is sucked from the suction port 21 through the bottom of the main body, and is blown into the machine room 15 from the bell mouth.

The air blown into the machine chamber 15 by the heat radiating fan 18 flows backward along the axial flow, but hits the cover 23 and a part of the air is led upward, as shown by the arrow in FIG. ) And the heat exchange with the condenser 13 by the high speed and low temperature of the outside air flows into the duct 24 formed by the cover body 23 and directly ejected from the fan, and cools it. Likewise, the air flows out from the air outlet A 25 at the upper end of the cover body 23. In particular, unlike the case where the condenser 13 generates a portion of the conventional heat dissipation fan disposed on the suction side and lacks wind power and a large surface area where heat exchange is impossible, a large amount of heat exchange air flow due to a high wind speed is obtained and thus the condenser ( 13) The compactness of itself can also be achieved.

At the same time, a part of blown air collides with the cover body 23 in the center direction of the main body width, heat exchanges with the compressor 12 to radiate heat, and is then provided on the side of the cover body 23. From the outside. In this case, since the air flow is the blowing air from the fan 18, the wind speed is high, and the air temperature is low temperature and the cooling effect is large in that it is not yet heat-exchanged compared with the prior art, and the room of the compressor 12 and the condenser 13 is large. Since the thermal efficiency can be increased, the power consumption can be reduced by an effective refrigeration operation, and at the same time, the cooling of the printed wiring board 27 can be effectively performed by a part of the classified air flow.

At this time, the rotating shaft of the heat radiating fan 18 is matched with the front-back direction of the machine room 15, and the casing size including the fan diameter does not affect the depth of field with respect to the structure which followed the width direction of the conventional machine room. Therefore, the depth of depth for installing the heat radiating fan 18 can be made shallow, and the volume of the machine room 15 can be largely reduced.

In addition, with respect to the evaporation dish 19, both the air to the compressor 12 and the condenser 13 flows in the upper part, and the heat of the discharge pipe 26 installed in the said dish and the compressor and the condenser Together with the high temperature atmosphere in the machine room 15, the defrost water is effectively evaporated.

Further, a small hole 20a is provided at a position facing the evaporation plate 19 below the fan casing 20, which is an entry path of external air to the heat radiating fan 18. As shown in FIG. The small hole 20a sucks a part of the air blown out from the bottom of the refrigerator main body 1 to the downstream side of the heat dissipation fan 18 by negative pressure, and short-circuits the heat dissipation fan 18 to evaporate the plate 19. It is to generate a flow of air on the top of and to promote evaporation.

In addition, when the direction of rotation of the heat radiating fan 18 with respect to the condenser 13 is reversed at an arbitrary time of several months or once a year, the dust attached to the condensation pipe or the wire fin is blown out. At the same time, the clogging of the condenser 18 can be eliminated and the heat exchange efficiency can be improved.

By the above configuration, the piping of the compressor 12, the condenser 13, the heat radiating fan 18, the evaporation plate 19, the printed wiring board 27, and each of the refrigeration cycles in the machine room 15 has a heat dissipation efficiency. In addition, since it can arrange effectively, the machine room itself can be made compact and the volume can be reduced compared with the past, and the storage volume in a height can be expanded by that much. Moreover, the structure which can further expand the storage volume in a refrigerator is demonstrated. FIG. 7 is a cross-sectional view of the lowermost freezer compartment 7 portion in which the refrigerator main body 1 is seen from the front, and according to the configuration of the present invention, the bottom space of the main body which has been conventionally installed for installing a flat condenser can be eliminated. The position of the outer box bottom plate 2b forming the bottom of the refrigerator main body 1 is lowered by the height of a conventional condenser.

Specifically, the outer box bottom surface 2b is extended downward over the entire width and depth except for the space on both sides of the front leg 29 that supports the entire front of the refrigerator body 1 and contacts the bottom surface. The protrusion length (D) downward is up to the position where the conventional condenser is installed, and maintains a proper gap for inflow of unevenness on the bottom surface or intake air to the heat radiation fan 18 rather than the bottom surface. have.

The inner box bottom surface 4a which forms the freezing chamber 7 with respect to the protrusion part 30 of the outer box bottom surface is provided through the heat insulation wall 3a of predetermined thickness. Therefore, the position of the conventional inner box bottom 4a 'shown by the dashed-dotted line is lowered by the height of the protrusion 30 of the outer box bottom plate 2a, and the volume of the lowered portion increases as the storage volume.

In addition, since a high-temperature condenser was conventionally installed at the bottom of the bottom of the outer box, it was necessary to increase the heat insulation thickness from the bottom of the inner box. However, in the above embodiment, no high temperature member exists under the outer box bottom 2b. Therefore, it is also possible to make the heat insulation thickness thin by that, and it can further increase the volume of a high inner side.

In addition, both sides of the protrusion 30 of the outer box bottom plate is formed with recesses for attaching the front legs 29, but since this portion is a corner of the bottom of the main body and is also the thickest part of the insulation, the curved surface of the high inner corner Along with shaping | molding, the heat insulation thickness of a corner part can fully be ensured, and there is little influence on the both sides of the inner box bottom face 4a by the projection part 30, and it is not necessary to consider the shape change of the bottom face of the extraction container.

In the above embodiment, the compressor 12 is installed close to the left side as a layout in the machine room 15, and the condenser 13 and the like are arranged on the other side, but the left and right positions may be reversed. In addition, arrangement | positioning of the storage compartment in a storehouse is not limited to an Example.

EMBODIMENT OF THE INVENTION Hereinafter, another embodiment of this invention is described based on drawing. The refrigerator main body 1 which shows the longitudinal cross-sectional view in FIG. 1 and the perspective view of the machine room part from the distribution in FIG. 8 is stored by the inner box 4 installed in the inner surface of the outer box 2 via the heat insulation wall 3. A space is formed and divided into a plurality of storage chambers such as the refrigerating chamber 5, the vegetable chamber 6, and the freezing chamber 7 by the partition wall.

Each storage compartment is cooled and maintained at a predetermined set temperature by the refrigerator cooler 8, the refrigerator cooler 9, and the fans 10 and 11 arranged in each of the refrigerating and freezing spaces. ) Supplies a refrigerant by operation of a refrigeration cycle consisting of a compressor 12, a condenser 13, and the like.

The compressor 12 in the refrigeration cycle is installed in the machine room 15 formed in the lower back of the refrigerator main body 1, and is attached to the comparator 16 provided over the width direction of the main body via a cushioning body. .

The condenser 13 receives the high temperature and high pressure refrigerant gas from the compressor 12 to dissipate it and condenses it. The refrigerant from the condenser 13 passes through a capillary tube, which is a pressure reducing tube. It is supplied to the cooler 9 and evaporates to cool the inside of the storage chamber to a predetermined air temperature, and is mounted on the back of the machine chamber 15.

However, the machine room 15 is a stepped section 17 protruding toward the freezing chamber 7 side under the back of the main body, as shown in a longitudinal cross-sectional view of the main part in FIG. 9 and a cross-sectional view of a portion of the compressor 12 below in FIG. 10. To form a space having a predetermined depth and height in the width direction by the step portion 17, and the refrigerant compressor 12 in close proximity to one side of the width direction of the machine room 15 space. And a heat dissipation fan 18 and condenser 13 for introducing external air into the machine room 15 with the wide space side of the other as a heat dissipation duct from the compressor, and an evaporating plate 19 for evaporating defrost water. Etc. are installed.

As shown in FIG. 11, the heat radiating fan 18 is attached to the bell mouse part 20a of the fan casing 20, and is arrange | positioned so that axial flow may become the front-back direction of the machine room 15. As shown in FIG. In detail, the pan casing 20 has a lower end portion fixed to the comp 16 and an upper end portion fixed to the rear end of the step portion 17, thereby forming a slight gap S1 between the step portions 17, The peripheral edge is arrange | positioned so that the step part 17 may contact. More specifically, as shown in FIGS. 12 and 13, the pan casing 20 inserts the slide hooks 20b formed at the lower end portions of both sides into the engagement holes 30 provided in the comp. The lower end is fixed by sliding to the rear of the main body 1, and the upper end is screwed in a state in which the fastening part 20c extending rearward from the upper end of the fan casing 20 is fixed to the rear end of the step portion 17. Fix it. Such a fixed configuration is simple and excellent in workability, and since the fan casing 20 is pressed backward by the step portion 17 in the state in which the refrigerator main body 1 is assembled, the fan casing 20 can be reliably fixed. Can be.

The inlet 16 of the outside air which consists of a plurality of openings across the width of the pan casing 20 is provided in the comp base 16 of the lower front of the said pan casing 20. As shown in FIG. At the rear of the heat radiating fan 18, a condenser 13 formed in the form of a plurality of flat plates is arranged, and the condenser 13 faces the lower end of the heat radiating fan 18, and the upper part is located above the machine room 15. It extends to the upper side and is installed upright along the recessed part 22 formed in the outer box thick plate 2a.

As shown in Fig. 11, the condenser 13 is formed into a flat plate shape by welding through an air guide plate 13b formed of a positive heat conductor such as a steel plate between the refrigerant pipes 13a meandering in a plurality of layers. The air guide plate 13b is formed by cutting up and opening the opening 13c, which is an air distribution port along the refrigerant pipe 13a, and installing the cut-out member at an angle to both sides of the plate to form a wind direction guide member 13d. The air flow from the heat radiating fan 18 is directed upward as shown by an arrow to facilitate the heat exchange operation of the refrigerant pipe 13a, and at the same time, the air guide plate 13b itself acts as a heat sink.

At this time, in the blowing of the heat radiating fan 18 to the condenser 13, the upstream side of the blowing and the downstream side of the refrigerant in the condenser 13 are made to correspond to each other, so that the downstream side of the sequential blowing and the refrigerant of the condenser The upstream side is made to heat exchange. That is, when the meandering coolant pipe 13a is disposed in two layers, the cooling pipe 13a is arranged on the side closer to the heat radiating fan 18 so that the downstream side of the coolant in the coolant pipe 13a having a relatively low temperature is located. It is good to arrange | position so that a high temperature refrigerant | coolant side may become a high position also about a performance can be acquired and also a vertical position.

In addition, the condenser structure is not limited to the above, and may be formed by placing a polymerized wire condenser in which a heat dissipation wire is welded on both surfaces of a meander refrigerant pipe in a plurality of layers, or may be provided in combination of both.

In the bottom of the heat dissipation fan 18 and the condenser 13, an evaporation plate 19 is provided on the comparator 16 to receive the defrost water from the coolers 8 and 9 and to evaporate it. A discharge pipe 26 is extended from the compressor 12 in the evaporation plate 19, and the discharge pipe 26 is immersed in the defrosted defrost water to condense the defrost water by the heat of the high temperature refrigerant. It is.

As shown in Figs. 13 and 14, the evaporating plate 19 is fitted with an elastic hook 34 provided at the front end with the suction port 21, and screwed to the rear end of the evaporating plate 19, thereby providing a comparator. It is fixed to the predetermined position of 16. In more detail, as shown in FIG. 15, an almost L-shaped elastic hook 34 is integrally provided at the front end of the evaporating plate 19, and a protrusion provided at the tip of the elastic hook 34. As shown in FIG. The front part of the evaporating plate 19 is fixed to the comp 16 by engaging 34a with the suction port 21. Then, in the state in which the entire evaporation plate 19 is fixed, the sunshade portion 36 and the rear end of the evaporation plate 19 protruding upward from the rear end of the comp table 16 are screwed from the outside of the refrigerator main body 1 ( 38). As such, the evaporating plate 19 is pulled to the rear by being screwed from the outside, and the projection 34a is applied to the rear by the elasticity of the elastic hook 34.

By fixing the evaporation plate 19 to the comp 16 in this manner, the assembly work is facilitated, and the evaporation dish 19 is firmly squeezed by the elastic force exerted by the elastic hook 34. And the contact sound of the fan casing 20 or the comp 16 generated by vibration of the heat radiating fan 18 or the compressor 12 can be reduced.

In addition, as shown in FIG. 8, the recess 22 of the rear plate located above the compressor 12 adjacent to the condenser 13 has a power supply circuit, an inverter switching circuit, a motor control circuit, The printed wiring board 27 mounted with the rectifier circuit etc. is arrange | positioned so that the outer box thick plate 2a may be followed.

The printed wiring board 27 has a planar convex shape in which the convex portion 27b extends from the base 27a, and is installed such that the convex portion 27b is positioned upward in the state of being installed in the concave portion 22. It is. And the connector 40 which connects a bundle is provided in the lower end of the base 27a located above the compressor 12, and condensation is formed in the connection part of a bundle by the heat which the compressor 12 produces. It is suppressed to generate | occur | produce, and the damage of the printed wiring board 27 is prevented. In addition, by installing an AC component having a relatively high heat generation amount such as a rectifier circuit or a capacitor in the convex portion 27b of the printed wiring board 27, heat generated from the AC component or the like is extracted upwards, and the interior of the base 27a is near. An increase in temperature can be suppressed. In that case, it is preferable to provide the space | gap S2 above the convex part 27b, and by this, the heat which generate | occur | produces from an AC component etc. can remain in the space | gap S2, and the temperature of the printed wiring board 27 rises. Can be suppressed more effectively.

As shown in Fig. 16, a PC board cover 32 made of resin such as ABS is provided on the distribution of the machine room 15 so as to cover at least the outer surface of the convex portion 27b on which the AC parts are installed. A cover body 23 made of metal such as iron is provided to cover a portion, that is, the lower end of the machine room 15 in which the compressor 12 is disposed, from the lower end of the machine room 15 to form a rear wall of the machine room 15. Doing. By arranging the machine room with ABS resin and metal in this manner, it is possible to suppress heat conduction from the compressor 12 and the condenser 13 to the PC plate cover 32 via the cover body 23. Moreover, it is preferable that the resin which comprises the PC board cover 32 is an index which is easy to absorb radiant heat, such as black.

At the upper end of the cover body 23, an upper vent 25B is provided at a position facing the upper part of the condenser 13, and the concave portion of the outer box thick plate 2a in which the condenser 13 is placed upright ( 22 and the outside of the machine room 15 and the duct 24 formed between. In addition, the lower vent 28B is provided in the position which opposes the compressor 12 in the lower end part of the cover body 23.

Each part in the machine room 15, such as the compressor 12 and the condenser 13, is arrange | positioned as mentioned above, and when the heat radiating fan 18 rotates, as shown by the arrow of FIG. 9 or FIG. Of the outside air is sucked from the suction port 21 through the bottom of the main body, and is blown into the machine room 15 from the bell mouth.

The air blown into the machine chamber 15 by the heat radiating fan 18 flows backward along the axial flow, but is hit by the cover body 23, and a part of the air is led upward, as shown by the arrow in FIG. ) Is introduced into the duct 24 formed of the cover body 23 and the heat exchanger with the condenser 13 by the wind blown directly from the fan to cool it, as shown in FIG. 16. It flows out from the upper vent 25B of the upper end. In particular, unlike the case where the condenser 13 generates a portion where heat exchange cannot be performed with a large surface area according to a conventional configuration, a large heat exchange air volume is obtained due to the high wind speed, and the condenser 13 itself can be made compact. have.

At the same time, a part of the blowing air is divided into the center direction of the main body width by hitting the cover body 23, and heat-exchanged with the compressor 12 to radiate heat, and then the downward vent 28B provided in the side direction of the cover body 23. From the outside. In this case, since the air flow is also blown air from the heat radiating fan 18, the wind speed is fast and the air temperature is not yet heat exchanged compared to the conventional one, so it is a low temperature and has a large cooling effect, and thus the heat dissipation of the compressor 12 and the condenser 13 Efficiency can be increased and power consumption can be reduced by effective refrigeration operation.

At this time, the axis of rotation of the heat radiating fan 18 coincides with the front-rear direction of the machine room 15, and the casing size including the fan diameter affects the depth of the structure for the configuration along the width direction of the conventional machine room. Since the depth of depth for installing the heat radiating fan 18 can be made shallow, the volume of the machine room 15 can be greatly reduced.

In addition, with respect to the evaporation plate 19, both air to the compressor 12 and the condenser 13 side flows in the upper part, the heat of the discharge pipe 26 installed in the said dish, and the machine room by a compressor or a condenser. Together with the high temperature atmosphere in (15), the defrosting water is effectively evaporated.

On the other hand, for example, when the heat radiating fan 18 is operated for a long time, dust may accumulate in the intake port 21, causing clogging of the intake port 21, and the supply of external air may be blocked. In this case, even if the heat radiating fan 18 is rotated even if it is idle, the outside air cannot be sent to the inside of the machine room 15, but the refrigerator of the present embodiment faces the upper part of the condenser 13 of the cover body 23. Since the upper vent 25B is formed in the lower vent and the lower vent 28B is formed at a position facing the refrigerant compressor 12, the air warmed by the condenser 13 flows from the upper vent 25B to the machine room 15. By being discharged to the outside, the outside air is blown into the machine chamber 15 where the internal pressure is lowered from the downward vent 28B, and the blown outside air is discharged from the top vent 25B by heat exchange with the compressor 12, the condenser 13, and the like. do. That is, the heat generated from the compressor 12, the condenser 13, or the like causes the condenser to generate natural convection in the inside of the machine room 15 by using the lower vent 28B as the intake vent and the upper vent 25B as the exhaust port. 13) It becomes possible to cool the parts arrange | positioned in the machine room 15, etc., and can secure the freezing force of a refrigerating cycle.

By the way, as shown in FIG. 17, the front both ends of the outer box bottom 42 constituting the bottom of the refrigerator main body 1 support the front part of the refrigerator main body 1 to conduct the forward movement ( The front leg 29 which prevents i) is provided, and the handle 44 for conveying the refrigerator main body 1 is provided in the inside.

As shown in FIG. 18, the front leg 29 is provided with the base part 29a fixed to the outer box bottom 42, and the leg part 29b installed in the lower part of the front end, and the leg part 29b is The base portion 29a is fixed to the bottom of the outer box by screwing so as to contact the bottom surface in front of the front surface of the refrigerator main body 1.

In such a front leg 29, a moment of rotation in the direction of detaching from the bottom of the outer box 42 acts on the base portion 29a of the front leg 29 immediately before the refrigerator main body 1 is turned forward. The force pulled toward the outer box bottom face 42 side acts by the screw fixing screw 29c provided in the center of the width direction 29a. Therefore, the base part 29a generate | occur | produces the bending deformation of the width direction which the both side parts displace downward. Therefore, by forming the beads 29d in the width direction on the contact surface in contact with the bottom surface of the outer box in the base portion 29a, the strength can be improved to suppress the bending deformation in the width direction of the base portion 29a. The refrigerator main body 1 can be prevented from falling forward.

19 and 20, the handle 44 is such that the handle 44a, which the hand of the person carrying the refrigerator body 1 passes through, is positioned in front of the front surface of the refrigerator body 1. It is fixed by screwing in the recessed part 46 formed in the bottom of an outer box. In this way, the handle 44a is disposed in front of the front of the refrigerator main body 1 so that the carrier is easy to grasp and the handle 44a is disposed on the bottom of the refrigerator main body 1, compared to the case where the handle 44a is disposed on the bottom of the refrigerator main body 1. The position of can be lowered downward, and the storage volume in the refrigerator can be expanded accordingly.

According to the present invention, the machine room can be compactly used in a refrigerator having a high internal volume.

With the efficient arrangement of the component parts, the heat dissipation efficiency of the compressor and the condenser can be improved at the same time as the machine room space is compacted, and a refrigerator having high volumetric efficiency can be obtained by expanding the internal storage volume with respect to the external size.

In addition, the efficient arrangement of the components arranged in the machine room enables the compactness of the machine room space and the heat dissipation efficiency of the compressor or condenser to be improved. Can be obtained. In addition, by forming a lower air vent at a position facing the refrigerant compressor on the rear wall of the machine room and an upper air vent at a position facing the condenser, even when supply of external air from the inlet is blocked by dust adhesion, As a result, air can be circulated inside the machine room so as to suck external air from the lower air vent and discharge it from the upper air vent, and cooling of parts such as a condenser arranged in the machine chamber can be prevented from lowering the freezing force.

Claims (8)

delete The machine chamber formed in the lower back side of the refrigerator main body, the refrigerant compressor provided in proximity to one side of the width direction in the said machine room, the condenser arrange | positioned along the back wall of the other side of the width direction of the said machine room, and axial flow facing the said condenser, The heat dissipation fan is arranged to be in the front-rear direction, and the heat dissipation fan is configured to blow the air sucked from the bottom of the main body into the condenser and the compressor, and the condenser is formed in a plurality of stages of flat plate shape and It is installed in a duct formed by a cover body covering the back of the machine room, and a part of the cooling wind from the heat radiating fan heats up with the condenser and flows upwards, and further cool air is blown to the compressor side. . The machine chamber formed in the lower back side of the refrigerator main body, the refrigerant compressor provided in proximity to one side of the width direction in the said machine room, the condenser arrange | positioned along the back wall of the other side of the width direction of the said machine room, and axial flow facing the said condenser, It is composed of a heat dissipation fan arranged in the front and rear direction, the heat dissipation fan is to classify the air sucked from the bottom of the main body to the condenser and the compressor to be blown, and the printed wiring board is arranged to follow the outer plate rear plate of the upper part of the compressor And a part of the cooling wind from the heat radiating fan is blown to the printed wiring board portion. The method of claim 2 or 3, A refrigerator comprising an evaporating plate disposed below the heat radiating fan and the condenser. The machine chamber formed in the lower back side of the refrigerator main body, the refrigerant compressor provided in proximity to one side of the width direction in the said machine room, the condenser arrange | positioned along the back wall of the other side of the width direction of the said machine room, and axial flow facing the said condenser, The heat dissipation fan is disposed in the front and rear directions, and the heat dissipation fan separates and blows the air sucked from the bottom of the main body to the condenser and the compressor, and arranges an evaporation plate under the heat dissipation fan and the condenser. A small hole is provided at a position facing the evaporating plate below the pan casing, and a part of the air blown out from the bottom of the refrigerator body to the downstream side of the heat radiating fan is short circuited so as to pass through the small hole. The method of claim 5, Steps are provided so that the bottom of the evaporating dish is higher than the entire bottom of the back side, and a partition rib is provided in the vicinity of the step, and divided into a plurality of container parts. A refrigerator characterized by storing and evaporating a constant, and overflowing from the back side to the whole side when there is a large amount of defrost water. The machine chamber formed in the lower back side of the refrigerator main body, the refrigerant compressor provided in proximity to one side of the width direction in the said machine room, the condenser arrange | positioned along the back wall of the other side of the width direction of the said machine room, and axial flow facing the said condenser, The heat dissipation fan is disposed so as to be in the front-rear direction, and the heat dissipation fan separates and blows the air sucked from the bottom of the main body to the condenser and the compressor, and the outer box bottom plate forming the bottom of the refrigerator main body is provided with a heat insulating thickness of both walls. A refrigerator characterized by protruding a predetermined length toward a lower refrigerator arranging surface in a width direction from a position excluding a substantial width of the front leg attachment space, and placing the inner box bottom on the protruding surface downward through an insulating wall. The method of claim 2, At the bottom of the refrigerator body, a heat dissipation fan forms an inlet for sucking air into the machine room, and a part of the cooling air from the heat dissipation fan on the rear wall of the machine room faces the condenser so as to exchange heat with the condenser and flow upward. An upper vent is formed in the upper portion, and a lower vent is formed at a position facing the refrigerant compressor so as to blow another cooling wind to the compressor side, and suctioned from the lower vent by natural convection when the air supply from the suction port is cut off. A refrigerator characterized by distributing one air to the compressor and the condenser to discharge from the upper vent.

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