JP2013213614A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator in which size of a mechanical chamber in the vertical direction is reduced as far as possible while preventing refrigerator oil in a compressor from flowing out into a suction pipe.SOLUTION: A refrigerator includes: a heat insulation box body; a mechanical chamber disposed on an upper rear part of the heat insulation box body; a compressor arranged in the mechanical chamber; an inlet pipe which is connected to the compressor; and a connection pipe which connects the inlet pipe with a suction pipe. Therein, the inlet pipe is arranged along the horizontal direction and the connection pipe is arranged along the horizontal direction as a whole. Further, the connection pipe is configured to have a bent part forming a U-shape which is extended in the front side, is curved in a U-shape and is extended in the rear side.

Description

  Embodiments of the present invention relate to a refrigerator.

  In a household refrigerator, a machine room is disposed at the lower rear part of a heat insulating box (cabinet), and a compressor and a radiator are installed in the machine room. In order to transport such a refrigerator, when the refrigerator is turned over, the refrigeration oil in the compressor may flow out into the suction pipe connected to the compressor. In this case, if the refrigerator is installed upright, the refrigerating machine oil in the suction pipe returns to the compressor, and there is no problem. However, in the case of a refrigerator in which the machine room is arranged on the upper surface part or upper rear part of the heat insulation box, the refrigeration oil in the compressor flows out into the suction pipe after being laid sideways, and then the refrigerator is installed upright, There was a risk that the compressor oil in the suction pipe would not return to the compressor and the compressor would fail.

  On the other hand, a configuration is known in which refrigerating machine oil is prevented from flowing into the suction pipe by appropriately connecting a connection pipe that connects the suction pipe and the suction pipe in the machine chamber (see, for example, Patent Document 1). ). In this configuration, the connecting pipe connected to the suction pipe led out from the compressor is first bent upward and raised upward, and then bent in the horizontal direction and extended forward, and further U-shaped. The pipe is bent so as to extend rearward. According to this piping form, even if the refrigerator is laid down or the refrigerating machine oil in the compressor flows into the suction pipe, the outflow of the refrigerating machine oil stops at the U-shaped bent portion. For this reason, after transportation, when the refrigerator is stood and installed, the refrigeration oil can be reliably returned to the compressor.

  However, in the case of the above configuration, the connecting pipe has a rising portion that is bent upward and raised upward after being led out from the compressor, so that the rising portion is accommodated in the machine room. The problem arises that the vertical dimension of the machine room becomes large.

Japanese Patent No. 3714141

  In view of the above, a refrigerator capable of reducing the vertical dimension of the machine room as much as possible while preventing the refrigerating machine oil in the compressor from flowing into the suction pipe is provided.

  The refrigerator of the present embodiment includes a heat insulating box, a machine room provided in an upper rear portion of the heat insulating box, a compressor disposed in the machine room, a suction pipe connected to the compressor, and the suction A connecting pipe that connects the pipe and the suction pipe is provided. And the said suction pipe was arrange | positioned along the horizontal direction, and the said connection pipe as a whole was arrange | positioned along the horizontal direction. Further, the connecting pipe is characterized in that it has a bent portion that extends forward and is bent into a U shape and extends backward.

The perspective view of the refrigerator which removed the machine room cover which shows 1st Embodiment Top view of machine room Vertical side view of refrigerator Perspective view of the refrigerator as seen from the front Perspective view of the refrigerator as seen from the rear Cooling fan perspective view Perspective view of radiator The figure which shows the state which conveys the refrigerator

(First embodiment)
Hereinafter, the refrigerator of 1st Embodiment is demonstrated with reference to drawings. First, as shown in FIG. 3, the refrigerator 1 is configured by providing a plurality of storage chambers in a vertically long rectangular box-shaped heat insulation box 2 whose front surface (left side in FIG. 3) is open. Hereinafter, the opening side of the heat insulation box 2, that is, the left side in FIG. 3 will be described as the front side (front side) of the refrigerator 1.

  The heat insulating box 2 is configured by providing a heat insulating material 5 between an outer box 3 made of steel plate and an inner box 4 made of synthetic resin. The heat insulating material 5 is composed of, for example, a vacuum heat insulating panel or urethane. The heat insulation box 2 is provided with a refrigerator compartment 6 and a vegetable compartment 7 in that order from the top, and an ice making room (not shown) and a small freezer compartment 8 are arranged side by side on the lower side, and further below the freezer. A chamber 9 is provided. The ice making chamber is provided with an automatic ice making device (not shown).

  The refrigerator compartment 6 and the vegetable compartment 7 are both storage compartments in a refrigerated temperature zone. For example, the maintenance temperature of the refrigerator compartment 6 is set to 1 to 5 ° C., and the maintenance temperature of the vegetable compartment 7 is slightly higher than that. It is set to 2-6 degreeC. The refrigerator compartment 6 and the vegetable compartment 7 are partitioned vertically by a plastic partition plate 10. An opening is formed in the rear part of the partition plate 10, and the refrigerator compartment 6 and the vegetable compartment 7 communicate with each other through the opening.

  In the refrigerator compartment 6, for example, a plurality of plastic shelves 11 are provided. The inside of the refrigerator compartment 6 is divided into a plurality in the vertical direction by these multi-stage shelves 11. Further, as shown in FIG. 4, hinged open / close type heat insulation doors 12 and 13 for the refrigerating room are provided on the front surface of the refrigerating room 6. An operation panel (not shown) is provided on the front surface of the heat insulating doors 12 and 13 for the refrigerator compartment. The operation panel includes an operation unit for performing various settings and selections and a plurality of display units for performing necessary displays. Etc. are arranged.

  On the front side of the vegetable room 7, a drawer-type heat insulating door 14 for the vegetable room is provided. A storage container 15 configured in two upper and lower stages is attached to the back surface of the vegetable room heat insulation door 14. The storage container 15 stores fruits and vegetables as food, that is, vegetables and fruits.

  The ice making room, the small freezer room 8 and the freezer room 9 are all storage rooms in a freezing temperature zone, for example, a minus temperature zone of −10 to −20 ° C. The vegetable compartment 7 and the ice making room and the small freezer compartment 8 are vertically partitioned by a heat insulating partition wall 16. On the front side of the ice making room, a drawer type ice making room heat insulating door 17 to which an ice storage container is connected is provided. On the front side of the small freezer compartment 8, a drawer-type heat insulating door 19 for the small freezer compartment to which a storage container 18 is connected is provided. Also, a drawer-type freezer compartment heat insulation door 21 to which a storage container 20 having two upper and lower stages is connected is provided on the front side of the freezer compartment 9.

  A refrigeration cooler 22 and a refrigeration fan 23 are disposed behind the small freezer compartment 8 and the freezer compartment 9. In this configuration, when the freezing fan 23 is driven, the cold air cooled by the freezing cooler 22 is supplied to the ice making room, the small freezing room 8 and the freezing room 9, and the air passing through them is again the freezing fan. It circulates so that it may be sucked into 23. As a result, the ice making chamber, the small freezer compartment 8 and the freezer compartment 9 are cooled to a temperature in the freezing temperature zone.

  A refrigeration cooler 24 is disposed at the rear of the partition between the refrigerator compartment 6 and the vegetable compartment 7, and a refrigeration fan 25 is disposed above the refrigeration cooler 24. A cold air duct 26 is provided at the back of the refrigerator compartment 6, and the cold air duct 26 has a plurality of cold air outlets formed therein. In this configuration, when the refrigeration fan 25 is driven, the cold air cooled by the refrigeration cooler 24 passes through the cold air duct 26 and is supplied from the plurality of cold air outlets to the refrigeration chamber 6 and the refrigeration chamber. 6 is also supplied to the vegetable compartment 7 and circulates so that air passing through them is sucked into the refrigeration cooler 24 side by the suction action of the refrigeration fan 25. Thereby, the refrigerator compartment 6 and the vegetable compartment 7 are cooled to the temperature of the refrigerator temperature zone.

  In addition, a machine room 27 is provided in the upper part of the back of the heat insulation box 2, and in this machine room 27, a compressor 28 and a cooling fan 29 (FIGS. 1, 6, and 6) for cooling the compressor 28 and the like are provided. 7), a radiator (condenser, condenser) 30 (see FIGS. 1 and 7) and the like are disposed. The compressor 28 and the radiator 30 constitute a known refrigeration cycle together with the refrigeration cooler 22 and the refrigeration cooler 24.

  Here, the machine room 27 will be described in detail. A stepped recess 31 is provided on the upper portion of the back of the heat insulation box 2 so as to protrude inward of the heat insulation box 2, and a machine room 27 is configured by the recess 31. The position of the lower surface 31a (the lower surface of the inner box 4) 31a of the recess 31 is configured to be substantially the same as the position of the uppermost shelf 11. The upper end portion of the compressor 28 installed in the recess 31 is configured to be positioned above the upper surface of the heat insulating box 2. In the present embodiment, about 1/3 of the vertical dimension of the compressor 28 projects upward from the upper surface of the heat insulating box 2. The wall portion of the heat insulating box 2 constituting the recess 31, that is, the space between the outer box 3 and the inner box 4, is filled with, for example, urethane as the heat insulating material 5. The cold air duct 26 is disposed along the lower surface and the front surface of the recess 31.

  As shown in FIGS. 1, 2, and 3, the upper opening and the rear opening of the recess 31 are closed by a machine chamber cover 34 that forms an outline of the machine chamber 27 and has a substantially L-shaped cross section as a whole. Yes. A large number of heat radiation openings 34a are formed in the rear surface portion of the machine room cover 34, and external cooling air is sucked through the heat radiation openings 34a and the heat radiation air is exhausted to the outside. The heat radiation opening 34a is provided below the upper surface of the heat insulating box 2 at the rear surface of the machine room cover 34 (see FIG. 5).

  In addition, a wiring board (PC board) 35 is disposed on the upper surface portion of the heat insulating box 2, and the wiring board 35 includes various control devices and driving devices that control the entire refrigerator. Electronic components are mounted. A rectangular container-like wiring board cover 36 having an open lower surface is attached to the upper surface portion of the heat insulating box 2 so as to cover the wiring board 35. The length dimension of the wiring board cover 36 in the left-right direction is slightly shorter than the length dimension of the heat-insulating box 2 in the left-right direction. The height dimension of the wiring board cover 36 is substantially the same as the height dimension of the machine room cover 34 (machine room 27). In this case, the front end portion of the machine room cover 34 is placed so as to partially overlap the upper rear portion of the wiring board cover 33 and is screwed, for example.

  Now, the cooling fan 29 and the radiator 30 disposed in the machine room 27 are attached to a rectangular frame-like attachment member 41 (see FIGS. 1, 6 and 7). The attachment member 41 is a fan casing of the cooling fan 29 and is an attachment member for attaching the radiator 30. Thus, the attachment member 41 to which the cooling fan 29 and the radiator 30 are attached is fixed to a portion adjacent to the compressor 28 on the bottom surface of the recess 31 (see FIG. 1). The machine room cover 34 is placed and supported on the upper surface of the attachment member 41, and the attachment member 41 is a support member that supports the machine room cover 34 (see FIGS. 1 and 3).

  Here, as shown in FIGS. 1 and 2, a suction pipe 42 and a discharge pipe 43 are connected to the compressor 28. The suction pipe 42 and the discharge pipe 43 are arranged along the horizontal direction. The suction pipe 42 and the suction pipe 44 projecting upward from the upper right end portion of the rear wall portion of the heat insulation box 2 are connected by a connection pipe 45. The connecting pipe 45 is disposed so as to extend in the horizontal direction as a whole. The connecting pipe 45 is instructed to be fitted into a first bent portion 45a that extends forward and is bent into a U shape and extends rearward, and a groove 41a formed in the rear surface portion of the mounting member 41. Intermediate portion 45b and a second bent portion 45c that extends forward and is bent into a U shape and extends rearward.

  Further, the discharge pipe 43 is connected to the input end portion of the radiator 30 through the connecting pipe 46. As shown in FIGS. 1 and 2, the connecting pipe 46 has a U-shaped portion 46a that extends upward and is bent in a U-shape and extends downward, a portion 46b that extends forward, and a portion 46c that rises upward. A portion 46d extending rearward and bent in a U-shape and extending forward, and a portion 46e extending leftward. The output end of the radiator 30 is connected to the input ends of the coolers 22 and 24 via capillary tubes, valves, refrigerant pipes (refrigerant flow paths connecting the devices), and the like. The output ends of the coolers 22 and 24 are connected to the suction pipe 44.

  As shown in FIGS. 1 and 3, carrying handles 48, 48 are provided at the upper portion of the rear surface portion of the heat insulating box 1, that is, at the lower portion of the rear portion of the machine room 27. Further, a transport handle (not shown) is also provided on the lower surface of the heat insulation box 1. When the refrigerator 1 is transported by two people, as shown in FIG. 8, the handpiece 48 on the upper part of the rear surface portion of the heat insulation box 1 and the handgrip portion on the lower surface portion of the heat insulation box 1 are hung. Carry 1 sideways on its side.

  According to this embodiment having such a configuration, the connecting pipe 45 that connects the suction pipe 42 and the suction pipe 44 of the compressor 28 has a U-shape that extends forward and is bent in a U-shape and extends rearward. Since the first bent portion 45a is provided, even if the refrigerator oil in the compressor 28 flows out into the suction pipe 42 and the connecting pipe 45 when the refrigerator 1 is laid down during transportation or the like, the first bent portion 45a. Therefore, the refrigerating machine oil can be reliably returned into the compressor 28 when the refrigerator 1 is rebuilt. That is, the refrigerant oil in the compressor 28 can be prevented from flowing out to the suction pipe 42. In particular, in the present embodiment, the suction pipe 42 is arranged in the horizontal direction and the connecting pipe 45 is arranged in the horizontal direction, that is, it is configured so that there is no rising portion of the pipe. Can be made as small as possible.

  In the present embodiment, since the connecting pipe 45 is provided with the two bent portions, that is, the first bent portion 45a and the second bent portion 45c, the refrigeration in the compressor 28 can be performed when the refrigerator 1 is laid down. Even if the machine oil flows out into the suction pipe 42 and the connecting pipe 45, the first bent portion 45a and the second bent portion 45c can be squeezed. It can return more reliably.

(Other embodiments)
In addition to the plurality of embodiments described above, the following configuration may be added.
In the above embodiment, the connecting pipe 45 is provided with two bent portions, that is, the first bent portion 45a and the second bent portion 45c. However, the present invention is not limited to this, and one bent portion (first 1 bent portion 45a or second bent portion 45c) may be provided, or 3 or more bent portions may be provided.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

In the drawings, 1 is a refrigerator, 2 is a heat insulation box, 27 is a machine room, 28 is a compressor, 30 is a radiator, 42 is a suction pipe, 43 is a discharge pipe, 44 is a suction pipe, 45 is a connection pipe, and 45a is a first pipe. Reference numeral 1 denotes a bent portion and 45b denotes a second bent portion.

Claims (2)

An insulated box,
A machine room provided at the upper rear of the heat insulation box,
A compressor disposed in the machine room;
A suction pipe connected to the compressor;
A connecting pipe that connects the suction pipe and the suction pipe;
Arranging the suction pipe along the horizontal direction,
The connecting pipe as a whole is disposed along the horizontal direction,
The said connecting pipe is comprised so that it may have a bending part which makes the U-shape extended forward and bent in the U-shape, and extended back. The refrigerator according to claim 1, wherein the connection pipe is configured to have a plurality of bent portions having the U shape.

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