JP2012202567A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator having improved efficiency of energy (COP) by improving the cooling performance of a compressor in the refrigerator.SOLUTION: The refrigerator includes a cooling fan 43 which cools a compressor 41 provided in a rear lower part of a refrigerator body 1, and a partition plate 6 which is projected in a floor direction from a bottom plate 3d of the refrigerator body to extend in front-rear directions, and which partitions the space between the bottom plate and a floor surface into right and left part when viewed from the front, the partition plate being arranged in parallel with side surfaces of the refrigerator so that air energized by the cooling fan flows including a side part of the refrigerator body such that one of the right and left side is a suction-side air course and the other side is an exhaustion-side air course.

Description

  The present invention relates to a refrigerator such as a refrigerator, and more particularly to an improvement in cooling performance of a compressor that compresses a refrigerant.

  A partition plate is provided between the exhaust port and the inlet to prevent a short circuit where the exhaust air that has become hot due to heat exchange with the refrigerator compressor is sucked again from the inlet as cooling air. In some cases, the flow path is divided (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 7-294094 (first page, FIGS. 1 and 2)

  The conventional cooling storage as described above has a structure in which the partition plate blocks the air passage. As a result, after the exhaust air is blocked by the partition plate, it makes a U-turn and is exhausted from the air passage, resulting in a large system loss. In addition, since the exhaust air heats up with the compressor and becomes high temperature, the partition wall, the bottom of the main body of the cooling storage, and the space surrounded by the surrounding walls (under the compressor) become the high temperature region. There is a problem that it is difficult to obtain a sufficient heat dissipation effect.

  The present invention has been made to solve the above-described problems, and has an object to obtain a refrigerator that further prevents the short circuit without increasing the loss of the system and further improves the cooling performance of the compressor. Yes.

  The refrigerator according to the present invention projects in the floor direction so as to extend in the front-rear direction with respect to the cooling fan that cools the compressor provided in the lower rear portion of the refrigerator body, and the bottom plate of the refrigerator body, and the bottom plate And a partition member that divides the space between the floor and the left and right when viewed from the front, and the air flow urged by the cooling fan is on the intake side air passage on the left and right sides of the partition member, The other side is an exhaust side air passage.

  In this invention, it forms so that an intake side air path and an exhaust side air path may be located in a line by a partition member. For this reason, since the intake side air passage and the exhaust side air passage are separated without blocking the air passage, it is possible to prevent a short circuit in which the high-temperature exhaust air re-inflows from the intake port without increasing the flow passage loss. The cooling performance is improved.

The front perspective view which shows notionally the refrigerator which concerns on Embodiment 1 of this invention. The bottom view of the refrigerator shown by FIG. The rear view of the refrigerator shown by FIG. The rear view which shows the state which removed the back cover of the refrigerator shown by FIG. The rear view which shows the path | route of the cooling air in the installation state of the refrigerator shown by FIG. The principal part side view explaining the intake side air path of the refrigerator shown by FIG. The principal part side view explaining the exhaust side air path of the refrigerator shown by FIG. The bottom view which shows the cooling air path | route of the refrigerator shown by FIG. The comparison figure explaining operation | movement when there is no partition member shown by FIG. The bottom view which shows the modification of the refrigerator shown by FIG. The bottom view which shows the other modification of the refrigerator shown by FIG. The bottom view which shows the refrigerator which concerns on Embodiment 2 of this invention. The bottom view which shows the modification of the refrigerator shown by FIG. The principal part perspective view which shows the other modification of the refrigerator shown by FIG. The bottom view of the refrigerator shown by FIG. The disassembled perspective view which shows notionally the principal part of the lower surface of the refrigerator which concerns on Embodiment 3 of this invention.

Embodiment 1 FIG.
1-8 is a figure explaining the refrigerator which concerns on Embodiment 1 of this invention, FIG. 1 is a front perspective view which shows a refrigerator notionally, FIG. 2 is a bottom view which shows the bottom face of a refrigerator, FIG. FIG. 4 is a rear view showing a state in which the rear cover is removed and the machine room is exposed, and FIG. 5 is a rear view showing a path of cooling air by the cooling fan of the compressor in the installed state of the refrigerator. FIG. 6, FIG. 6 is a side view of the main part for explaining the intake side air passage of the refrigerator, FIG. 7 is a side view of the main part for explaining the exhaust side air passage of the refrigerator, and FIG. 8 is a bottom view showing the cooling air path of the refrigerator. .

  First, the external structure of the refrigerator main body 1 is demonstrated using FIGS. 1-3. On the front side of the refrigerator main body 1, a refrigerator compartment left door 2a, a refrigerator compartment right door 2b, an ice making compartment door 2c, a switching compartment door 2d, a vegetable compartment door 2e, and a freezer compartment door 2f are provided to be openable and closable. In addition, a pair of left and right side plates 3a and 3b is provided on the side surface of the refrigerator body 1, a top plate 3c for connecting the upper ends of the side plates 3a and 3b is provided on the upper surface, and a lower front side of the side plates 3a and 3b is provided on the bottom surface. A base plate 4a that connects the bottom plate 3d that connects the two and the lower rear of the side plates 3a and 3b and supports a machine room 4 to be described later is provided.

  On the back of the refrigerator body 1, a back plate 3e that connects the upper portions of the side plates 3a and 3b, and an intake opening 5a and an exhaust opening 5b are formed at the ends, respectively, and below the side plates 3a and 3b. A back cover 5 to be connected is provided. A gap Ga communicating with the machine chamber 4 is formed in a portion indicated by a broken line circle on the right side of FIG. 2 between the bottom plate 3d and the base plate 4a, and a portion indicated by a broken line circle on the left side in FIG. A gap Gb communicating with the chamber 4 is formed.

  Further, the bottom plate 3d and the base plate 4a are provided with a partition member 6 which is a typical characteristic portion of the present invention so as to protrude in the floor direction so as to extend in the front-rear direction, and between the bottom plate 3d and the floor surface. The space is provided so as to be divided into left and right when viewed from the front. As the material of the partition member 6, it is preferable to use a soft material having a high elastic coefficient such as flexible or elastic rubber or resin because the short circuit prevention effect can be further enhanced. This is because, when the refrigerator is installed, the partition member 6 can be in contact with the floor and deformed to fill a minute gap. Moreover, it becomes possible to install a refrigerator without damaging a floor surface by using a soft material. The portions excluding the gaps Ga and Gb between the bottom plate 3d and the base plate 4a shown by the “shaded pattern” in FIG. 2 are portions where the heat insulating material is exposed, so that air does not flow in the horizontal direction of the drawing. It has become.

  As shown in FIG. 4, a compressor 41 that compresses a low-pressure / low-temperature refrigerant into a high-pressure / high-temperature refrigerant, and a high-pressure / high-temperature gasified refrigerant discharged from the compressor 41 are condensed inside the machine room 4. , A condenser 42 for converting to a high-pressure liquid refrigerant, a cooling fan 43 for cooling the compressor 41, a defroster that stores defrosted water that melts frost adhering to an evaporator (not shown), and evaporates the defrosted water 44 and a pipe 45 through which the refrigerant flows. In this example, the cooling fan 43 is installed so as to urge the cooling air in the left-right direction when viewed from the front of the refrigerator body 1 as indicated by the arrow in FIG. A drain pan 44 and a condenser 42 are disposed on the upstream side (intake side), and a compressor 41 is disposed on the downstream side (exhaust side).

  Next, the operation of the first embodiment configured as described above will be described with reference to FIGS. Here, considering the situation where the refrigerator is actually used, the cooling air path in a state where three sides other than the front surface of the refrigerator are surrounded by the wall W will be described. Although the direction of the cooling air is indicated by an arrow, the cooling air (intake air) before heat exchange with the compressor 41 is indicated by a solid line, and the cooling air (exhaust air) after heat exchange with the compressor 41 is performed. Is indicated by a dotted line.

  When the cooling fan 43 is activated, the cooling air passes through the gap between the side plate 3a formed on the upstream side of the cooling fan 43 and the surrounding wall W, and the gap between the refrigerator main body 1 and the floor F, and the back cover. 5 is sucked into the inside of the machine room 4 through the intake opening 5a provided in the gap 5 and the gap Ga between the bottom plate 3d and the base plate 4a. Thereafter, the cooling air after the temperature is increased by exchanging heat with the compressor 41 is exhausted from the exhaust opening 5b provided in the back cover 5 and the gap Gb between the bottom plate 3d and the base plate 4a, and cooled. It passes through the gap between the side plate 3b formed on the downstream side of the fan 43 and the surrounding wall W and the gap between the refrigerator main body 1 and the floor F and is discharged to the outside.

  Here, in order to explain the effect of the partition member 6 in the first embodiment, a cooling air path in a state in which the partition member 6 is removed will be described with reference to a comparative diagram of FIG. If the partition member 6 is not provided on the bottom plate 3d and the base plate 4a, the cooling air intake port and the exhaust port are not separated and exist in the same space. In such a configuration, the cooling air after the temperature is increased by exchanging heat with the compressor 41 is exhausted from the exhaust opening 5b provided in the back cover 5 and the gap Gb between the bottom plate 3d and the base plate 4a. After that, as a cooling air again, a short circuit that is sucked in from the intake opening 5a provided in the back cover 5 and the gap Ga between the bottom plate 3d and the base plate 4a is generated. When a short circuit occurs, the intake air temperature of the cooling air itself increases, and the cooling performance of the compressor decreases.

  On the other hand, in the first embodiment in which the partition member 6 that extends in the front-rear direction and divides the air passage into the left and right is provided on the bottom plate 3d and the base plate 4a as described above, the cooling air intake port and the exhaust air are exhausted. Since the mouth is clearly divided and the short circuit as described above can be suppressed, the cooling performance of the compressor is improved. That is, as shown in FIGS. 2 and 8, by providing the partition member 6 in the direction parallel to the side plates 3a and 3b of the refrigerator, the air path formed by the gap between the side plates 3a and 3b and the surrounding wall W is changed. Since the intake / exhaust can be partitioned without blocking, it is possible to prevent a decrease in the amount of cooling air due to an increase in pressure loss.

  In FIG. 8, the partition member 6 is provided in parallel with the side plates 3a and 3b of the refrigerator. However, as in the modification of the first embodiment shown in FIG. There is no problem of forming a circuit. The direction of the inclination may be the reverse direction of FIG. Further, since the intake / exhaust of the cooling air is determined with the cooling fan 43 as a boundary, the position of the partition member 6 is directly below the cooling fan 43 as in another modification of the first embodiment shown in FIG. By disposing, the intake part and the exhaust part are divided on the basis of the cooling fan 6, and the balance between intake and exhaust is improved.

  As described above, according to Embodiment 1, the bottom plate 3d and the base plate 4a are protruded in the floor direction so as to extend in the front-rear direction with respect to the bottom plate made of the bottom plate 3d and the base plate 4a. A partition member 6 that divides the space between the upper surface of F and the left and right when viewed from the front is provided, and the air flow including the side portion of the refrigerator body 1 that is urged by the cooling fan 43 is applied to the partition member 6. Since the left and right sides are arranged in parallel so that the airflow path is on the intake side and the airflow path is on the other side, the intake and exhaust sections can be separated without blocking the airflow path. In addition, it is possible to prevent the formation of a short circuit in which high-temperature exhaust air re-inflows from the intake port. For this reason, cooling of a compressor is performed efficiently and the energy efficiency (COP) of a compressor is improved.

Further, as in another modification of the first embodiment, by providing the rear side of the partition member 6 so as to be located immediately below the cooling fan 6, the intake and exhaust portions are symmetrical with respect to the cooling fan 6. And the balance between intake and exhaust is improved, so that a short circuit can be prevented more effectively.
In addition, by using a soft material having a high elastic coefficient such as rubber or resin as the partition member 6, the partition member 6 is deformed according to the unevenness of the floor when the refrigerator is installed, and fills a minute gap. Therefore, a short circuit can be prevented more effectively. Moreover, it becomes possible to install a refrigerator without damaging a floor surface by using a soft material.
In addition, improvement in the energy efficiency of the compressor can be expected to reduce the size and extend the service life.

Embodiment 2. FIG.
12 is a bottom view showing a refrigerator according to Embodiment 2 of the present invention, FIG. 13 is a bottom view showing a modification of the refrigerator shown in FIG. 12, and FIG. 14 is another modification of the refrigerator shown in FIG. FIG. 15 is a bottom view of the refrigerator shown in FIG. 14. In addition, the same code | symbol is attached | subjected about the member or part which is the same or it corresponds through each figure, and the overlapping description is abbreviate | omitted. In the second embodiment, as shown in FIG. 12, a bent portion 6a is formed at the front end portion of the refrigerator main body 1 of the partition member 6, and the corner portion is bent in an L shape. The bent portion 6a is bent in the direction of the intake side air passage. Other configurations are the same as those of the first embodiment.

  In the second embodiment, the same effect as in the first embodiment can be obtained, and the partition member 6 is curved in the direction of the intake air path at the front end of the refrigerator body 1, thereby The wraparound from the side air passage to the intake air passage is further reduced, and it becomes possible to prevent a short circuit more effectively without increasing the pressure loss of the system. As in the modification of the second embodiment shown in FIG. 13, the bending direction of the bent portion 6a may be the direction of the exhaust side air passage. In addition, if it curves to the exhaust side, as shown with the broken-line arrow of FIG. 13, a part of hot air may raise | generate a convection in the bending part 6a, and a pressure loss may increase. For this reason, although the cooling efficiency of the compressor is slightly lower than the example shown in FIG. 12, an effect equivalent to or higher than that of the first embodiment can be expected.

  In addition, when it is difficult to directly form the L-shaped bent portion 6a in the partition member 6 as shown in FIG. 12, as in another modification of the second embodiment shown in FIGS. The front cover 7 installed at the front lower end of the refrigerator main body 1 is provided with an intake port 7 a and an exhaust port 7 b, and an L-shaped bent portion 6 a is configured by a combination of the front cover 7 and the partition member 6. Also good. That is, in the other modification, the bent portion 6a is formed by the vicinity of the front end of the refrigerator of the partition member 6 and the plate-like portion between the air inlet 7a and the air outlet 7b in the front cover 7.

Embodiment 3 FIG.
FIG. 16 is an exploded perspective view conceptually showing the main part of the lower surface of the refrigerator according to Embodiment 3 of the present invention. In the figure, the partitioning member 6 is formed by sheet metal processing a predetermined portion of the bottom plate 3d on the front side in a mountain shape in the floor direction and a predetermined portion of the base plate 4a on the rear side in a mountain shape in the floor surface direction. It is comprised from the convex part 6c and the soft cover 6d with which the convex part 6b and the convex part 6c were mounted | worn. The convex part 6b and the convex part 6c are linearly provided at the same position as in the first embodiment, for example. The soft cover 6d is made of a soft material having a high elastic coefficient such as rubber or resin. The soft cover 6d can be expected to have a corresponding effect as described below even when the soft cover 6d is omitted. However, the soft cover 6d can be expected to have a further effect by being attached to the convex portions 6b and 6c. Since other configurations are the same as those of the first embodiment, the description thereof is omitted.

  In the embodiment in which the soft cover 6d is omitted in the third embodiment as described above, the partition member 6 composed of the convex portions 6b and 6c extends from the surfaces of the bottom plate 3d and the base plate 4a to the floor direction which is not shown. It is integrally molded so as to protrude. Therefore, the partition member 6 can be provided at a low cost. Moreover, since the effect as a reinforcement rib can also be acquired in the partition member 6, in addition to the short circuit prevention effect by a partition member, the structural strength improvement effect as a rib can be acquired. Furthermore, by improving the strength, it is possible to reduce the thickness of the bottom plate 3d and the base plate 4a, and the effect of reducing the cost can be obtained.

  By the way, the bottom plate 3d and the base plate 4a are usually formed of a metal material such as a steel plate. Therefore, the convex part 6b and the convex part 6c are also metal members. Therefore, in the third embodiment in which the partition member 6 is configured in such a manner that the convex portion 6b and the convex portion 6c are covered with a soft cover 6d made of a soft material having a high elastic coefficient such as rubber or resin as shown in FIG. Since the minute gap generated between the convex portion 6b and the convex portion 6c and the floor can be filled, a short circuit can be prevented more effectively. Moreover, since a soft material is used, a refrigerator can be installed without damaging the floor surface.

  It should be noted that the shape, position, number, etc. of each door provided on the front surface of the refrigerator body 1, and the shape, position, number, etc. of the intake opening 5a and the exhaust opening 5b provided on the back cover 5 Furthermore, it goes without saying that the shape, position, number, etc. of the intake port 7a and the exhaust port 7b provided in the front cover 7 are not limited to those exemplified in the first to third embodiments.

  DESCRIPTION OF SYMBOLS 1 Refrigerator main body, 3a, 3b Side plate, 3d Bottom plate, 4 Machine room, 4a Base plate, 41 Compressor, 43 Cooling fan, 45 Piping, 5 Back cover, 5a Intake opening part, 5b Exhaust opening part, 6 partition member, 6a bent part, 6b, 6c convex part, 6d soft cover, 7 front cover, 7a air inlet, 7b air outlet, F floor, Ga gap, Gb gap, W wall.

Claims (7)

  A cooling fan that cools the compressor provided in the lower rear part of the refrigerator main body, and protrudes in the floor direction so as to extend in the front-rear direction with respect to the bottom plate of the refrigerator main body, between the bottom plate and the floor surface A partition member that divides the space into right and left when viewed from the front of the refrigerator body is provided, and the air flow urged by the cooling fan is on the intake side air passage on the left and right sides of the partition member, and the other side is exhausted A refrigerator characterized by a side air passage.   The cooling fan is installed so as to urge the cooling air in the left-right direction when viewed from the front of the refrigerator body, and the rear side of the partition member is provided so as to be located immediately below the cooling fan. The refrigerator according to claim 1.   The refrigerator according to claim 1 or 2, wherein the front side of the partition member is curved leftward or rightward.   The refrigerator according to claim 3, wherein a front side of the partition member is curved toward the intake side air passage.   The refrigerator according to any one of claims 1 to 4, wherein the partition member is made of a soft material having flexibility or elasticity.   The refrigerator according to any one of claims 1 to 4, wherein the partition member is formed by using a convex portion that is sheet-metal processed integrally with the bottom plate.   The refrigerator according to claim 6, wherein the convex portion is covered with a soft cover having flexibility or elasticity.

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