JP2003056968A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow two suction pipes for a cold storage chamber and a deep freezing chamber to be distributed in a limited space without interfering with each other in a refrigerator in which a cooler for the cold storage chamber and a cooler for the freezing chamber are connected in parallel. SOLUTION: The refrigerator comprises the two suction pipes 28, 33 curved in an inverse U shape for the cold storage chamber and the deep freezing chamber in such a manner that the pipe 28 disposed at an upper side is disposed at an outside of the pipe 33 disposed at a lower side. Thus, a pipe connecting space can be reduced, and the two suction pipes can be avoided to interfere with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having an improved suction pipe arrangement in a structure in which coolers are connected in parallel.

[0002]

2. Description of the Related Art Conventionally, a refrigerating cycle shown in FIG. 8 has been generally used in a refrigerator. In this refrigeration cycle, a discharge tube 1a of a compressor 1, a delivery tube 2, a condenser 3, a dryer 4, and an inlet 5a of a switching valve 5 composed of a three-way valve are sequentially connected.
From the outlet 5b of one side, the capillary tube 6 for the refrigerating compartment, the cooler 7 for the refrigerating compartment, the connecting pipe 8, the cooler 9 for the freezing compartment, the accumulator 10, and the suction pipe 11 are sequentially connected, and the suction pipe 11 is connected to the compressor 1 Is connected to the suction port 1b. From the other outlet 5c of the switching valve 5, the freezer compartment capillary tube 12 is connected in parallel with the refrigerating compartment capillary tube 6 and the refrigerating compartment cooler 7.

FIG. 9 shows a piping structure of a refrigerator using the above-mentioned conventional refrigeration cycle. In the back part of an inner box 14 disposed inside an outer box 13 which forms the outer shell of the refrigerator, from the middle part thereof. A connecting pipe 8 is provided to the lower step portion, and a suction pipe 11 bent in an inverted U shape is provided from the lower step portion to a position higher than the connecting pipe 8 and downward.

Therefore, in this case, although not shown, the refrigerating compartment cooler 7 is arranged inside the inner box 14 at the middle stage, and one end (upper end) of the connecting pipe 8 is connected thereto. There is. The cooler 9 for the freezer compartment is arranged inside the inner box 14 at the lower stage, and the connecting pipe 8
The other end (lower end) of the suction pipe 11 is connected, and one end of the suction pipe 11 is connected via the accumulator 10. The accumulator 10 is arranged inside the inner box 14 and is not shown.

A machine chamber 15 is formed below the inner box 14. One end of the delivery tube 2 is connected to the discharge port 1a of the compressor 1 arranged in the machine chamber 15 and the suction port 1b is connected to the suction port 1b. The other end of the suction pipe 11 is connected.

[0006]

In the case of the above-mentioned prior art, the refrigerator 7 cooler 7 and the freezer cooler 9 are connected in series, and therefore the refrigerator 7 cooler 7 and the refrigerator cooler 7 are connected. When cooling the cooler 9, the influence of the temperature of the refrigerant discharged from the cooler 7 for the refrigerating room may reach the cooler 9 for the freezing room and cool the cooler 9 for the freezing room at an optimum evaporation temperature. could not. Even when only the refrigerating compartment cooler 7 should be cooled, the refrigerant discharged from the refrigerating compartment cooler 7 flows to the freezing compartment cooler 9 to cool the freezing compartment cooler 9, so that the refrigerating compartment is cooled. It was not possible to cool only the room cooler 7.

On the other hand, as shown in FIG. 10, there is provided a refrigerator 7 cooler 7 and a refrigerator refrigerator 9 connected in parallel. Specifically, one outlet 5 of the switching valve 5
From b, the capillary tube 6 for the refrigerating compartment, the cooler 7 for the refrigerating compartment, and the suction pipe 16 for the refrigerating compartment are sequentially connected. Further, from the other outlet 5c of the switching valve 5, the freezer compartment capillary tube 12, the freezer compartment cooler 9, the accumulator 10, the check valve 17, the freezer compartment suction pipe 1 are provided.
8 are sequentially connected, and the suction pipe 18 for the freezer compartment and the suction pipe 16 for the refrigerator compartment are
The connection pipe 18 is connected to the suction port 1 b of the compressor 1.

According to this, the refrigerating compartment cooler 7 and the freezing compartment cooler 9 are connected in parallel, and when the refrigerating compartment cooler 7 and the freezing compartment cooler 9 are cooled. The effect of the temperature of the refrigerant discharged from the refrigerating compartment cooler 7 does not affect the freezing compartment cooler 9, and the freezing compartment cooler 9 can be cooled at the optimum evaporation temperature. When only the refrigerating compartment cooler 7 is to be cooled, the refrigerant is allowed to flow only to the refrigerating compartment cooler 7, while when only the freezing compartment cooler 9 is to be cooled, only the refrigerating compartment cooler 9 is to be cooled. Flowing the refrigerant,
The refrigerator 7 cooler 7 and the freezer cooler 9 can be individually cooled.

However, in this structure, two suction pipes, that is, the suction pipe 16 for the refrigerating chamber and the suction pipe 18 for the freezing chamber are required, and the pipes of these two suction pipes interfere with each other in a limited space. It became necessary to do without doing. Also, regarding the connection portion of those suction pipes to the cooler,
A structure was desired in which it could be easily inserted and assembled in the inner box.

The present invention has been made in view of the above circumstances. Therefore, an object of the present invention is to provide a refrigerator for a refrigerating room and a refrigerator for a freezing room connected in parallel. Provided is a refrigerator in which two suction pipes for a freezer can be installed in a limited space without interfering with each other. Secondly, a connection portion of the suction pipe to a cooler is provided in an inner box. It is to provide a refrigerator that can be easily inserted and assembled.

[0011]

In order to achieve the first object, the refrigerator of the present invention has a refrigerator refrigerator and a refrigerator refrigerator, and these refrigerators are connected in parallel. Along with a suction pipe for a refrigerating room and a suction pipe for a freezing room which are connected to a compressor from each of the coolers, both suction pipes are bent in an inverted U shape, and the suction pipe located on the upper side is bent. , Located outside the suction pipe located on the lower side.

According to this, since the suction pipe for the refrigerating room and the suction pipe for the freezing room are bent in an inverted U shape, the piping space can be reduced, and the suction pipe located on the upper side can be By arranging it outside the suction pipe located on the lower side, they can be prevented from interfering with each other.

Further, in order to achieve the second object, the refrigerator of the present invention has a refrigerating room cooler and a freezing room cooler, and these coolers are connected in parallel and each of them is cooled. Having a suction pipe for a refrigerating room and a suction pipe for a freezing room connected to a compressor from a container, at least one of the suction pipes of the both suction pipes, a portion in the vicinity of the connection portion to the cooler, The first bent portion that is bent from the rear side to the front side of the piping portion, and the second bent portion that is bent from the tip end thereof to the lateral side.
The bent portion is bent into a shape having a bent portion, and the pipe portion is provided with a sloped portion facing toward the side opposite to the bending direction of the second bent portion with respect to the connection portion of the suction pipe. An insertion hole for inserting the connection portion of the suction pipe is formed in the portion.

According to this, at least one of the suction pipes for the refrigerating chamber and the suction pipe for the freezing chamber is obliquely inserted into the inside thereof from the insertion hole of the pipe portion at the connecting portion to the cooler. By doing so, it can be easily inserted, and then the suction pipe may be placed in a state in which the connecting portion is laterally oriented.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below.
This will be described with reference to FIGS. 1 to 7. First, FIG. 2 shows a refrigeration cycle used in the refrigerator of this embodiment.
In this refrigeration cycle, from the discharge port 21a of the compressor 21 to the delivery tube 22 and the condenser 2
3, inlet 24 of switching valve 25 which is composed of dryer 24 and three-way valve
5a are connected in order, and the capillary tube 26 for the refrigerating compartment, the cooler 27 for the refrigerating compartment, and the suction pipe 28 for the refrigerating compartment are sequentially connected from one outlet 25b of the switching valve 25.

From the other outlet 25c of the switching valve 25, a freezing chamber capillary tube 29, a freezing chamber cooler 30, an accumulator 31, a check valve 32, and a freezing chamber suction pipe 33 are connected in this order. , Its freezing room suction pipe 33 and cold room suction pipe 28
Are connected to the connecting pipe 34, and the connecting pipe 34
Is connected to the suction port 21b of the compressor 21.

That is, the capillary tube 2 for the refrigerator compartment
6, with respect to the refrigerator compartment cooler 27 and the refrigerator compartment suction pipe 28, the freezer compartment capillary tube 29, the refrigerator compartment cooler 30, the accumulator 31, the check valve 32,
And the suction pipe 33 for the freezer compartment is connected in parallel.

Next, FIG. 1 shows a piping structure of a refrigerator using the above refrigeration cycle. The back of an inner box 36 arranged inside an outer box 35 forming the outer shell of the refrigerator is connected to the piping section 3
7 is set. The suction pipe 28 for the refrigerator compartment is
The pipe portion 37 is preliminarily bent into an inverted U-shape that crawls upward and downward from the middle portion of the pipe portion 37, and is piped to the pipe portion 37. On the other hand, the freezing compartment suction pipe 33 is bent in advance in an inverted U-shape that crawls upward and downward from the lower portion of the pipe portion 37 and is connected to the pipe portion 37.

Therefore, although not shown, the refrigerating compartment cooler 27 is arranged inside the middle part of the inner box 36, and is connected to one end of the refrigerating room suction pipe 28. Further, the freezer compartment cooler 30 is arranged inside the lower part of the inner box 36, and one end portion of the freezer compartment suction pipe 33 is connected thereto. Therefore, one end of the refrigerating compartment suction pipe 28 functions as a connecting portion of the refrigerating compartment suction pipe 28 to the refrigerating compartment cooler 27, and one end of the freezing compartment suction pipe 33 is connected to the freezing compartment cooler 30. To function as a connection portion of the suction pipe 33 for the freezer compartment.

Of the suction pipes 28 and 33, the suction pipe located on the upper side (in this case, the suction pipe 28 for the refrigerating chamber) is connected to the suction pipe located on the lower side (in this case, the suction pipe 3 for the freezing chamber).
3) It is formed into a wider inverted U-shape, and the suction pipe 28 for the refrigerating compartment is formed into the suction pipe 3 for the freezing compartment.
It is placed on the outside of 3.

In addition, the suction pipe 28 for the refrigerator compartment is
The refrigerating room capillary tube 26 is arranged along the piping, and the freezing room suction pipe 33 is arranged along with the freezing room capillary tube 29. here,
Both suction pipes 28 and 33 are, for example, 2 times for the purpose of exchanging heat with the respective capillary tubes 26 and 29.
It has a length of [m] or more and is bent in the above-mentioned inverted U shape.

Further, as shown in FIG. 3, a portion near one end which is a connecting portion of the refrigerating compartment cooler 27 to the refrigerating compartment cooler 27 is a first bent portion 38 and a second bent portion. And a portion 39. Of these, the first bent portion 38 is bent in an L-shape from the rear side to the front side with respect to the pipe portion 37, and the second bent portion 3
9 is diagonally downward left in the drawing from the tip of the first bent portion 38,
It is then bent horizontally to the left and to the side.

Therefore, with respect to one end of such a refrigerating compartment suction pipe 28, the middle portion of the pipe portion 37, that is, the portion corresponding to the refrigerating compartment cooler 27, is reinforced as shown in FIG. The plate 27a is provided, and a slope portion 40 is formed on the side surface (in this case, the right side) facing away from the bending direction of the second bending portion 39. An insertion hole 41 into which one end of the suction pipe 28 for the refrigerator compartment is inserted is formed.

Then, from the insertion hole 41 to the inside of the pipe portion 37 (inside the inner box 36), the suction pipe 2 for the refrigerating chamber is provided.
One end of 8 is slanted (direction almost orthogonal to slope 40)
The suction pipe 28 for the cold room.
Is in a state in which one end portion is laterally oriented (see FIG. 5). 4 and 5, reference numeral 42 denotes a pipe fixture attached to one end of the refrigerating chamber suction pipe 28, which is attached to the peripheral portion of the insertion hole 41 of the pipe portion 37 with a plurality of screws 43. By this, the piping part 3
One end of the refrigerating chamber suction pipe 28 after being assembled to the No. 7 is fixed. Further, after the fixing, one end of the refrigerating compartment suction pipe 28 is connected to the refrigerating compartment cooler 27 in the inner box 36.

On the other hand, although not shown in detail, one end of the suction pipe 33 for the freezer compartment is also inserted and fixed in the inner box 36 through the insertion hole formed in the pipe portion 37, and the cooler for the freezer compartment is provided. Connected to 30. A machine chamber 44 shown in FIG. 1 is formed below the inner box 36, and one end of the delivery tube 22 is connected to the discharge port 21 a of the compressor 21 arranged in the machine chamber 44.
The connection pipe 34 is connected to b.

As described above, in the present configuration, the refrigerator compartment cooler 27 and the freezer compartment cooler 30 are connected in parallel, and the refrigerator compartment suction connected to the compressor 21 from the respective refrigerators 27, 30. In a pipe having a pipe 28 and a suction pipe 33 for the freezer compartment, both suction pipes 28, 33 are bent in an inverted U shape, and the suction pipe 28 for the refrigerating compartment located at the upper side of the suction pipes 28 and 33 is frozen at the lower side. It is arranged outside the room suction pipe 33.

Of these, both suction pipes 28, 33
Since each of the pipes is bent into an inverted U-shape, each pipe space in the pipe portion 37 can be made small. Moreover, by arranging the refrigerating compartment suction pipe 28 located on the upper side thereof outside the freezing compartment suction pipe 33 located on the lower side, it is possible to prevent them from interfering with each other.

6 and 7 are opposite to those of this configuration,
The drawing shows that the refrigerating room suction pipe 28 is arranged inside the freezing room suction pipe 33. In this case, there is a possibility that they may interfere, and in order to avoid it, the refrigerating room suction pipe 28 is provided. Bent part 45
(See FIG. 6) or the bent portion 46 (see FIG. 7) needs to be additionally formed, which leads to an increase in cost, and
The complicated shape of the refrigerating room suction pipe 28 increases the difficulty of mounting it. On the other hand, with this structure, it is not necessary to bend the suction pipe 28 for the refrigerator compartment, the cost can be reduced accordingly, and the attachment can be facilitated.

Further, in this structure, the refrigerator 2 cooler 2
7, a portion near one end of the refrigerating room suction pipe 28, which is a connection portion, is bent from a rear side to a front side of a pipe portion, and a second bent portion is bent from a front end to a side side. The bent portion 39 is bent to a shape having a bent portion 39, and the pipe portion 3 is attached to one end of the suction pipe 28 for the refrigerator compartment.
7 is provided with a sloping surface portion 40 facing away from the bending direction of the second bending portion 39, and an insertion hole 41 for inserting one end portion of the refrigerating chamber suction pipe 28 is formed in the sloping surface portion 40. is doing.

Thus, when assembling the suction pipe 28 for the refrigerating chamber to the pipe portion 37, one end portion of the suction pipe 28 for the refrigerating chamber can be easily inserted by inserting it obliquely into the inside from the insertion hole 41. Then, the suction pipe 28 for the refrigerating compartment may be placed in a state in which one end portion is laterally oriented. Thus, the refrigerating room suction pipe 28 can be easily assembled to the pipe portion 37.

Regarding the disposition of the suction pipe 28 for the refrigerating chamber and the suction pipe 33 for the freezing chamber, the cooling unit 30 for the refrigerating chamber is located above the cooling unit 27 for the refrigerating chamber, contrary to the configuration described above. In connection with this, the suction pipe 33 for the freezer compartment is the suction pipe 28 for the refrigerator compartment.
If the suction pipe 33 is located higher, the freezing chamber suction pipe 33 may be arranged outside the refrigerating chamber suction pipe 28.

Further, the first bent portion 38 and the second bent portion 39
Instead of the one end of the refrigerating room suction pipe 28, or together with the one end of the refrigerating room suction pipe 28, one end of the freezing room suction pipe 33 may be formed.
In accordance with this, the slope portion 40 and the insertion hole 41 formed in the pipe portion 37 in the side direction opposite to the bending direction of the second bent portion 39 also correspond to the refrigerator 27 cooler 27 of the pipe portion 37. Instead of or together with the portion to be cooled
You may form in the part corresponding to 0. In addition, the present invention is not limited to the embodiments described above and shown in the drawings, and may be appropriately modified and implemented without departing from the scope of the invention.

[0033]

As described above, according to the refrigerator of the present invention, firstly, the two suction pipes for the refrigerating room and the freezing room do not interfere with each other in a limited space. In addition, it can be performed without increasing the cost and without increasing the difficulty of mounting.

According to the refrigerator of the present invention, secondly, the connection portion of the suction pipe for at least one of the refrigerating compartment and the freezing compartment to the cooler can be easily inserted into the inner box and assembled. Therefore, the assemblability can be improved.

[Brief description of drawings]

FIG. 1 is a rear perspective view showing an embodiment of the present invention with a back plate of a refrigerator removed (before filling with a heat insulating material).

FIG. 2 is a schematic configuration diagram of a refrigeration cycle.

FIG. 3 is a partially enlarged perspective view of a suction pipe for a refrigerator compartment.

FIG. 4 is an exploded perspective view of an inner box and a suction pipe for a refrigerator compartment.

FIG. 5 is a transverse cross-sectional view of a pipe part and a suction pipe for a refrigerating room in an assembled state.

FIG. 6 is a piping diagram of a suction pipe showing a reference example.

FIG. 7 is a view corresponding to FIG. 6 showing a different reference example.

FIG. 8 is a view corresponding to FIG. 2 showing a conventional example.

FIG. 9 is a view equivalent to FIG.

FIG. 10 is a view corresponding to FIG. 2 showing a different conventional example.

[Explanation of symbols]

21 is a compressor, 27 is a refrigerating room cooler, 28 is a refrigerating room suction pipe, 30 is a freezing room cooler, 33
Is a suction pipe for a freezer, 37 is a pipe portion, 38 is a first bent portion, 39 is a second bent portion, 40 is a slope portion, 41
Indicates an insertion hole.

Claims (2)

[Claims] 1. A refrigerating room suction pipe and a freezing room having a refrigerating room cooler and a freezing room cooler, which are connected in parallel and which are connected to a compressor from the respective coolers. A refrigerator having a suction pipe, wherein both suction pipes are bent in an inverted U shape, and a suction pipe located on the upper side is arranged outside a suction pipe located on the lower side. 2. A refrigerating room suction pipe and a freezing room having a refrigerating room cooler and a freezing room cooler, which are connected in parallel and which are connected to a compressor from the respective coolers. In what has a suction pipe, at least one suction pipe of the both suction pipes, a portion near a connecting portion to the cooler, a first bent portion that is bent from the rear side to the front side of the pipe section, And a shape that has a second bent portion that is bent laterally from the tip of the suction pipe, and is opposite to the bending direction of the second bent portion in the pipe portion with respect to the connection portion of the suction pipe. A refrigerator characterized in that it has a sideward sloped portion, and an insertion hole for inserting the connection portion of the suction pipe is formed in this sloped portion.