JP2004245526A - Storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe fixing tool capable of being easily mounted on a suction pipe to hold the suction pipe at an intermediate between an inner case and an outer case, with respect to the holding of a refrigerant pipe buried in a heat insulating material of a storage main body of which the inside is cooled by a refrigerating cycle. <P>SOLUTION: The storage has a constitution in which a suction pipe holding part at a central part and a circular outer wall surrounding the same are integrally formed by using a synthetic resin, and a connecting part of the suction pipe holding part and the outer wall is formed as left and right walls of a pipe inserting opening to reduce the heat transfer of the suction pipe. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to holding a refrigerant pipe buried in a heat insulating material of a storage main body whose inside is cooled by a refrigeration cycle.
[0002]
[Prior art]
When a suction pipe of a refrigeration cycle is buried in a heat insulating material of a storage body whose interior is cooled by the refrigeration cycle, when the suction pipe comes into contact with an inner box or an outer box of the storage body, dew condensation occurs at that portion. In order to prevent this, there is a technique of winding a heat insulating foam such as a polyethylene foam around a suction pipe. However, since the part where the suction pipe comes into contact with the inner box or the outer box cannot be specified, there is a disadvantage that the range of winding the heat insulating foam is increased. As a technique for improving this, the suction prevention spacer on the back cover of the outer box is attached to the suction pipe. There is a claw portion for holding a pipe, and the claw portion holds a suction pipe in a heat insulating material (Patent Document 1).
[0003]
In Patent Document 1, a through hole for disposing a suction pipe in a heat insulating material is formed in a back plate of an outer box, and it is necessary to close the through hole with a cap before filling the heat insulating material. As described above, an extra structure is required for holding the suction pipe.
[0004]
[Patent Document 1]
JP-A-05-322435 (pages 1-2, FIGS. 1-5)
[0005]
[Problems to be solved by the invention]
In view of the above, the present invention has invented a pipe fixing device that can be easily attached to a suction pipe, and thereby provides a technique capable of holding a suction pipe at an intermediate position between an inner box and an outer box. is there.
[0006]
[Means for Solving the Problems]
The present invention relates to a storage body in which a heat insulating material is filled between an inner box and an outer box and the inside of the storage is cooled by a refrigeration cycle, wherein a pipe holding portion in a central portion and a circular outer wall surrounding the pipe holding portion are formed by the above-mentioned method. A pipe fixture integrally formed of synthetic resin is provided so as to be continuous with the left and right walls forming the pipe insertion opening of the pipe holding portion, and the pipe fixture is configured such that the pipe insertion opening is inserted with a suction pipe of the refrigeration cycle. With the expanding elastic force, a filling cavity portion of the heat insulating material having no continuous portion is formed between the outer peripheral wall and the peripheral wall of the pipe holding portion opposite to the pipe insertion opening, and from the pipe insertion opening, The suction pipe inserted into the pipe holding portion is disposed between the outer box and the inner box by the circular outer wall.
[0007]
As described above, since the fitting of the pipe fixing device to the suction pipe is performed by utilizing the elastic force of the pipe insertion opening of the pipe fixing device, it is easy to attach the pipe fixing device to the suction pipe regardless of the mounting location. Since it can be arranged in the heat insulating material in the middle of the box, it is difficult for cold heat from the suction pipe to be transmitted to the outer box, and it is possible to prevent dew condensation on the outer surface of the outer box even when the pipe fixing tool comes into contact with the outer box. Further, since the pipe insertion opening is formed in a part of the circular outer wall, even when the pipe fixing member is pressed against the outer box, the elasticity is effective, and no pressing impression is generated on the outer box.
[0008]
The present invention also provides a storage body in which a heat insulating material is filled between an inner box and an outer box and the inside of the storage is cooled by a refrigeration cycle, wherein a pipe holding portion in a central portion and a circular outer wall surrounding the pipe holding portion are provided. Is provided with a pipe fixture integrally formed of synthetic resin so as to be continuous with the left and right walls forming the pipe insertion opening of the pipe holding portion, and the pipe fixture is such that the pipe insertion opening is used to insert a suction pipe of the refrigeration cycle. The pipe holding portion has an elastic force that spreads along with the pipe holding portion, and a gap between the peripheral wall and the outer wall on the opposite side of the pipe insertion opening and the outer wall does not have a continuous portion. The suction pipe held by the portion is disposed between the outer box and the inner box by the circular outer wall with the pipe insertion opening facing the inner box.
[0009]
Thus, there is a path for transmitting the cold heat from the suction pipe to the outer box via the heat insulating material filled in the cavity, and a path for transmitting the cold heat to the outer box via the fixing tool. Of course, the heat transmission to the outer case via the heat insulating material is reduced by the heat insulating material. In addition, since the route passing through the fixture itself is first transmitted from the left and right walls of the pipe insertion opening to the inner box side, and then transmitted to the outer box side along the circular outer wall, the cold heat from the suction pipe largely wraps around Since the outer case has to be reached through the passage, the influence of cold from the suction pipe on the outer case can be reduced.
[0010]
Further, in the present invention, the pipe holding section includes a holding section of the suction pipe of the refrigeration cycle, and a holding section of the capillary tube communicating with the holding section of the suction pipe, wherein the capillary tube and the suction pipe are heated. It is characterized in that it is held in an exchange state.
[0011]
This makes it possible to maintain the capillary tube and the suction pipe in a heat exchange state and to arrange the suction pipe in the heat insulator between the outer box and the inner box by the pipe fixing tool.
[0012]
Further, the present invention is characterized in that the circular outer wall is formed as a thin wall having a small heat capacity, and thick portions are formed at a plurality of positions inside the circular outer wall. For this reason, the elasticity of the pipe fixture becomes more effective due to the thin-walled circular outer wall, and even when the pipe fixing member comes into contact with the outer box, no pressing impression is generated on the outer box.
[0013]
In addition, since the pipe fixing member is formed of polypropylene, the heat insulating effect is better than the case where the polyethylene foam is wound around the suction pipe, and the dew condensation preventing effect on the outer box is excellent.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described. Each drawing shows an embodiment of the present invention. FIG. 1 is a front perspective view of a storage body according to the present invention, FIG. 2 is a cross-sectional view of a portion provided with a pipe fixing device in FIG. 1, and FIG. FIG. 4 is a cross-sectional view taken along line AA, FIG. 4 is a view as viewed from the back side of FIG. 2, and FIG. 5 is a view showing one surface of the pipe fixture.
[0015]
In these figures, reference numeral 1 denotes a refrigerator which is one of storages, which divides a refrigerator main body 2 which is a storage main body having a front opening to form a plurality of storage rooms, and the front surfaces of these storage rooms are opened and closed by doors. It is a configuration that can be done. In this refrigerator, the refrigerator main body 2 constituting the heat insulating box body has a heat insulating material filling space formed between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4 filled with the foaming heat insulating material 5. It is a heat insulating structure. In the refrigerator main body 2, a freezer compartment 6 and a refrigerator compartment 7 are provided as compartments from above as a storage room, and a front opening of the freezer compartment 6 and a front opening of the refrigerator compartment 7 are provided on the right or left side of the refrigerator main body 2, respectively. It is opened and closed by a freezer compartment door 8 and a refrigerating compartment door 9 which are opened and closed by being rotated laterally by a vertically arranged hinge device.
[0016]
The freezer compartment 6 and the refrigerating compartment 7 are cooled to a predetermined temperature by circulating a cool air cooled by a refrigerant evaporator (cooler) 10 of a refrigerating cycle arranged behind the freezer compartment 6 by a blower 11. Reference numeral 12 denotes a refrigerant compressor of a refrigeration cycle. The compressed refrigerant is condensed by a condenser 13, then decompressed by a capillary tube 14 and flows into a refrigerant evaporator 10. The refrigerant evaporated in the refrigerant evaporator 10 circulates through the suction pipe 15 and returns to the refrigerant compressor 12.
[0017]
The suction pipe 15 extends from the refrigerant evaporator 10 through the rear wall 2A of the refrigerator main body 2 to the refrigerant compressor 12 arranged at the lower part of the refrigerator main body 2. A pipe fixing tool 20 is used for disposing the suction pipe 15 in an intermediate portion of a heat insulating material filling space between an outer box (outer wall plate) 3 and an inner box (inner wall plate) 4 which constitute the rear wall 2A. . The pipe fixing device 20 has a pipe holding portion 21 formed at a central portion, and a pipe insertion opening 22 that partially communicates with the pipe holding portion 21 is formed so as to surround the pipe holding portion 21 to form a circular outer wall 23. And these are integrally molded with a synthetic resin. For this reason, the pipe fixing device 20 has an elastic force in which the pipe insertion opening 22 expands as the suction pipe 15 of the refrigeration cycle is inserted, and the peripheral wall and the outer wall 23 on the opposite side of the pipe insertion opening 22 of the pipe holding portion 21 are provided. Between them, a filling cavity 30 of the heat insulating material 5 having no continuous portion is formed. In this preferred embodiment, communication between the pipe holding portion 21 and the circular outer wall 23 is only at a portion where the left and right walls forming the pipe insertion opening 22 of the pipe holding portion 21 are continuous with the circular outer wall 23. The synthetic resin for forming the pipe fixing member 20 is preferably polypropylene having poor heat conductivity.
[0018]
The pipe fixing device 20 is arranged such that the outer diameter of the circular outer wall 23 is located between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4 that constitute the rear wall 2A of the refrigerator main body 2. It is formed in the size which is. In this case, the dimension is preferably equal to or slightly smaller than the distance between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4 constituting the rear wall 2A. It is filled with the foaming heat insulating material 5 in a state of being disposed between an outer box (outer wall plate) 3 and an inner box (inner wall plate) 4 constituting the rear wall 2A of the refrigerator body 2. This is because the outer box 3 (outer wall plate) and the inner box (inner wall plate) 4 are pressed by the jig to prevent the outer box 3 from being pressed by the pipe fixing tool 20.
[0019]
The pipe holding unit 21 is a part that holds the suction pipe 15. However, the capillary tube 14 and the suction pipe 15 may be brought into contact with each other in a heat exchange state. In this case, the holding portion 21A of the suction pipe 15 is formed in the pipe holding portion 21 and the holding portion 21B of the capillary tube 14 is formed outwardly in communication with the back side of the holding portion 21A.
[0020]
Further, since the pipe fixing device 20 has a hollow portion 30 filled with the heat insulating material 5 between the peripheral wall and the outer wall 23 on the opposite side of the pipe insertion opening 22 of the pipe holding portion 21, In the part 30, a layer of heat insulating material 5 around the pipe fixture 20 and a series of heat insulating materials are formed.
[0021]
Attachment of the pipe fixing device 20 is as follows. First, the capillary tube 14 is inserted into the holding portion 21B of the capillary tube 14 from the pipe insertion opening 22, and then the suction pipe 15 is inserted into the holding portion 21A of the suction pipe 15 from the pipe insertion opening 22. I do. In this case, the width of the pipe insertion opening 22 is sufficiently larger than the outer diameter of the capillary tube 14, but is slightly smaller than the outer diameter of the suction pipe 15. This is because the small-diameter capillary tube 14 is easily damaged by bending or the like, so that it can be inserted with almost no resistance. Since the large-diameter suction pipe 15 has sufficient rigidity compared to the capillary tube 14, the pipe insertion opening It is configured to fit into the holding portion 21A while expanding the width of 22. In the holding portion 21A, the suction pipe 15 may be held by the elasticity of the left and right walls of the holding portion 21A.
[0022]
Thus, the suction tube 15 is stored in the holding portion 21A, so that the capillary tube 14 is maintained in the state of being stored in the holding portion 21B by the suction pipe 15, and the capillary tube 14 and the suction pipe 15 are in contact with each other in a heat exchangeable manner. Keep state. Note that the capillary tube 14 and the suction pipe 15 are brought into contact with each other in a heat exchange state by welding or the like in advance, and the capillary tube 14 is housed in the holding portion 21B through the pipe insertion opening 22 and the suction pipe 15 is housed in the holding portion 21A. The pipe fixture 20 can be attached to the pipe.
[0023]
As described above, the connection between the pipe holding portion 21 and the circular outer wall 23 is only at the portion where the left and right walls forming the pipe insertion opening 22 of the pipe holding portion 21 are continuous with the circular outer wall 23. 15 easily fits in the holding portion 21A while expanding the width of the pipe insertion opening 22. As described above, the pipe fixture 20 has elasticity so that the left and right walls of the holding portion 21A can be moved by the suction pipe 15. In order for the capillary tube 14 and the suction pipe 15 to be arranged between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4 constituting the rear wall 2A of the refrigerator body 2 by the pipe fixing device 20. Although the capillary tube 14 and the suction pipe 15 are held by two pipe fixing devices 20 in FIG. 1, more pipe fixing devices 20 may be arranged at intervals.
[0024]
As described above, the capillary tube 14 and the suction pipe 15 are arranged between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4 constituting the rear wall 2A of the refrigerator main body 2 by the pipe fixing device 20. However, in this arrangement state, the pipe insertion opening 22 faces the inner box (inner wall plate) 4 as shown in the figure.
[0025]
The outer tube (outer wall plate) 3 and the inner box (inner wall plate) 4 constituting the rear wall 2A of the refrigerator main body 2 are arranged in the middle by the pipe fixing device 20 so that the capillary tube 14 and the suction pipe 15 A heat insulating material filling space between the box (outer wall plate) 3 and the inner box (inner wall plate) 4 is filled with a foamable heat insulating material 5. As a result, the foamable heat insulating material 5 penetrates through the hollow portion 30 of the pipe fixing tool 20, and the pipe fixing tool 20 moves between the outer case (outer wall plate) 3 and the inner case (inner wall plate) 4. Buried inside. Then, the capillary tube 14 and the suction pipe 15 are embedded in the foamable heat insulating material 5 at an intermediate portion between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4.
[0026]
Thereby, the cold heat from the suction pipe 15 is transmitted to the outer case (outer wall plate) 3 through the heat insulating material 5 filled in the cavity 30 and the outer case (outer wall plate) through the pipe fixture 20. 3 exists. Naturally, the heat transmitted to the outer box (outer wall plate) 3 via the heat insulating material 5 is reduced by the heat insulating material 5. The route via the pipe fixture 20 itself is first transmitted from the left and right walls of the pipe insertion opening 22 in the direction of the inner box (inner wall plate) 4 and then along the circular outer wall 23 to the outer box (outer wall plate). Since the heat from the suction pipe 15 is transmitted to the side 3, the heat from the suction pipe 15 must reach the outer case (outer wall plate) 3 through a passage that goes around greatly. Can be reduced.
[0027]
Even when the suction pipe 15 falls off from the holding portion 21A due to vibrations or the like due to the refrigerator assembling work, the suction pipe 15 is made to stay in the middle between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4. To this end, the pipe fixture 20 has a pipe receiving portion 24 integrally formed on the near side (front side) of the pipe insertion opening 22 of the holding portion 21A so as to face the pipe insertion opening 22. The pipe receiving portion 24 has elasticity, and the suction pipe 15 fits into the holding portion 21A from the pipe insertion opening 22 while being pushed to the left in FIG. Even if the suction pipe 15 falls off from the holding portion 21A, it is received by the pipe receiving portion 24 and does not come into contact with the outer box (outer wall plate) 3 or the inner box (inner wall plate) 4.
[0028]
In the pipe fixing device 20, the circular outer wall 23 is formed as a thin wall having a small heat capacity, and the thick portion 25 is formed at a plurality of locations inside the thin wall. For this reason, the elasticity of the pipe fixture becomes more effective due to the thin-walled circular outer wall, and even when the pipe fixing member comes into contact with the outer box, no pressing impression is generated on the outer box.
[0029]
Thus, with the pipe fixing device 20 of the present invention, the capillary tube 14 and the suction pipe 15 are positioned between the outer box (outer wall plate) 3 and the inner box (inner wall plate) 4 that constitute the rear wall 2A of the refrigerator body 2. This arrangement prevents the dew condensation on the outer surface of the outer box (outer wall plate) 3 by the suction pipe 15. Further, the attachment of the pipe fixing device 20 of the present invention can be performed without forming a special hole in the outer box (outer wall plate) 3 constituting the rear wall 2A of the refrigerator main body 2.
[0030]
The present invention is not limited to the embodiments described above, and various changes can be considered without departing from the technical scope of the present invention, and include various embodiments.
[0031]
【The invention's effect】
According to the present invention, the fitting of the pipe fixing device to the suction pipe is facilitated regardless of the mounting location because the fitting of the pipe fixing device to the suction pipe is facilitated by utilizing the elastic force of the pipe insertion opening of the pipe fixing device, and the suction pipe is connected to the outer box. Since it can be arranged in the heat insulating material in the middle of the inner box, it is difficult for cold heat from the suction pipe to be transmitted to the outer box, and it is possible to prevent dew condensation on the outer surface of the outer box even if the pipe fixing tool comes into contact with the outer box. Further, since the pipe insertion opening is formed in a part of the circular outer wall, even when the pipe fixing member is pressed against the outer box, the elasticity is effective, and no pressing impression is generated on the outer box.
[0032]
According to the second aspect of the present invention, there is a path for transmitting the cold heat from the suction pipe to the outer box via the heat insulating material filled in the cavity, and a path for transmitting the cold heat to the outer box via the fixture. Of course, the heat transmission to the outer case via the heat insulating material is reduced by the heat insulating material. In addition, since the route passing through the fixture itself firstly travels from the left and right walls of the pipe insertion opening toward the inner box (inner wall plate), and then travels along the circular outer wall to the outer box (outer wall plate) side, Since the cool heat from the suction pipe must reach the outer case (outer wall plate) through a passage that largely wraps around, the influence of the cool heat from the suction pipe on the outer case (outer wall plate) can be reduced.
[0033]
Further, in the invention according to claim 3, maintaining the capillary tube and the suction pipe in a heat exchange state, and arranging the suction pipe in the heat insulating material between the outer box and the inner box, the pipe fixing tool Can be achieved by:
[0034]
According to the invention of claim 4, when the suction pipe is cooled, even if the pipe fixing tool comes into contact with the outer box, dew condensation occurs at the contact portion due to the thin and thick portions of the circular outer wall. Can be suppressed. In addition, the elasticity of the pipe fixture becomes more effective due to the thin-walled circular outer wall, and no pressing impression is generated on the outer box even when the outer wall comes into contact with the outer box.
[0035]
Further, according to the fifth aspect of the present invention, since the heat insulation effect is better than when the polyethylene foam is wound on the suction pipe, the effect of preventing dew condensation on the outer box is excellent.
[Brief description of the drawings]
FIG. 1 is a front perspective view of a storage main body according to the present invention.
FIG. 2 is a sectional view of a portion provided with a pipe fixing device in FIG.
FIG. 3 is a sectional view taken along line AA of FIG. 2;
FIG. 4 is a view seen from the back side of FIG. 2;
FIG. 5 is a view showing one surface of the pipe fixing device of the present invention.
[Explanation of symbols]
1 Refrigerator 2 Refrigerator body 3 Outer box (outer wall plate)
4 ... inner box (inner wall plate)
5: Foamable heat insulating material 14, Capillary tube 15, Suction pipe 20, Pipe fixture 21, Pipe holding part 21A, Suction pipe holding part 21B, Capillary tube holding part 22, Pipe Insertion opening 23, outer wall 24, pipe receiving part 25, thick part 30, hollow part

Claims (5)

In a storage body in which a heat insulating material is filled between an inner box and an outer box and the inside of the storage is cooled by a refrigeration cycle, a pipe holding portion at a central portion and a circular outer wall surrounding the pipe holding portion are formed of the pipe holding portion. A pipe fixture integrally formed of synthetic resin is provided so as to be continuous with the left and right walls forming the pipe insertion opening, and the pipe fixture has an elastic force in which the pipe insertion opening expands with insertion of a suction pipe of the refrigeration cycle. The pipe holding portion is formed between the peripheral wall on the opposite side of the pipe insertion opening and the outer wall to form a cavity filled with the heat insulating material having no continuous portion, and is inserted into the pipe holding portion. A storage, wherein a suction pipe is arranged between the outer box and the inner box by the circular outer wall. In a storage body in which a heat insulating material is filled between an inner box and an outer box and the inside of the storage is cooled by a refrigeration cycle, a pipe holding portion at a central portion and a circular outer wall surrounding the pipe holding portion are formed of the pipe holding portion. A pipe fixture integrally formed of synthetic resin is provided so as to be continuous with the left and right walls forming the pipe insertion opening, and the pipe fixture has an elastic force in which the pipe insertion opening expands with insertion of a suction pipe of the refrigeration cycle. The pipe holding portion forms a cavity filled with the heat insulating material without a continuous portion between a peripheral wall of the pipe holding portion opposite to the pipe insertion opening and the outer wall, and is held by the pipe holding portion. A storage, wherein a suction pipe is arranged between the outer box and the inner box by the circular outer wall with the pipe insertion opening facing the inner box. The pipe holding unit includes a suction pipe holding unit of the refrigeration cycle and a capillary tube holding unit communicating with the suction pipe holding unit, and the capillary tube and the suction pipe are held in a heat exchange state. The storage according to claim 1 or 2, wherein: The storage according to any one of claims 1 to 3, wherein the circular outer wall is formed as a thin wall having a small heat capacity, and thick portions are formed at a plurality of locations inside the circular outer wall. The storage according to any one of claims 1 to 4, wherein the pipe fixture is formed of polypropylene.

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