JP5056694B2 - Bending piping, bent piping assembly and hot water supply device - Google Patents

Description

  The present invention relates to a bent pipe, a bent pipe joined body, and a hot water supply apparatus.

  Conventionally, hot water supply devices that have prepared hot water in the hot water storage tank from the previous stage of using hot water tend to have a larger hot water storage tank for storing hot water. It is desired.

On the other hand, the connection structure between the hot water storage tank and the piping is desired to be a structure that can be easily detached from the viewpoint of assembling of the product and workability of parts replacement at the time of service. As an example of such a pipe connection structure, for example, there is a pipe connection structure shown in Patent Document 1 below. In this Patent Document 1, a header pipe and a branch pipe branched from the header pipe are provided, and the connection structure between the header pipe and the branch pipe is made rotatable so that it is not easily restricted by the installation location. This technique has been proposed.
JP 2002-89769 A

  However, in the pipe fixing structure described in the above-mentioned Patent Document 1, a fixing tool that sandwiches a convex portion extending radially outward of the header pipe and a convex portion extending radially outward of the branch pipe from the connection direction. It is fixed by using. For this reason, when it is going to employ | adopt the structure which bends connection piping, it is necessary to bend from the part beyond this fixed part, without bending from the part before this fixed part.

  For this reason, since it is necessary to secure the width of the fixed part in the distance from the attachment position of the connecting pipe to the bent part, it is necessary to design with the distance between the attachment position and the bent part, and the installation space is reduced. It cannot be narrowed.

  This invention is made | formed in view of the point mentioned above, Even if it has the attachment shape utilized for the attachment with respect to an attachment target, the subject of this invention shortens the width | variety from an attachment position to a bending position. An object of the present invention is to provide a bent pipe, a bent pipe joined body, and a hot water supply device.

  The bent pipe of the first invention is a bent pipe that is attached to an attachment object, and includes a first portion, a second portion, and a bent portion. The second portion extends in a direction different from the direction in which the first portion extends. The bent portion connects the first portion and the second portion, and has an attachment shape that is used for attachment to the attachment object. The mounting shape of the bent portion is formed at a position that fits inside the width of the second portion in the direction in which the first portion extends.

  Even if this bending piping has the attachment shape utilized for attachment with respect to an attachment target object, it becomes possible to shorten the width | variety from an attachment position to a bending position.

  In addition, when the bent pipe is formed at a position that fits inside the width of the second part in the direction in which the first part extends, the bent pipe is attached to the attachment object. The influence of the mounting shape on the dimension in the direction in which the first portion extends can be eliminated.

  The bent pipe of the second invention is the bent pipe of the first invention, wherein the first part and the second part are not formed with a shape that is used for attaching to the attachment object.

  Since this bent pipe is not provided with a shape for mounting in the first part, the length of the first part can be kept short. And since the shape for attachment is not provided also in the 2nd part, it can avoid that the outer edge shape of a 2nd part becomes large. Thereby, the width | variety of a 1st direction in the state by which bending piping was attached to the attachment target object can be shortened.

  The bent pipe of the third invention is the bent pipe of the first invention or the second invention, wherein the second portion has a substantially cylindrical shape.

  This bent pipe can increase the pressure strength.

  The bent pipe of the fourth invention is the bent pipe of any one of the first to third inventions, and the mounting shape of the bent portion is formed on the outer surface.

  The bent pipe can be attached to the attachment object from the outside.

  The bent pipe of the fifth invention is the bent pipe according to any one of the first to fourth inventions, wherein the bent portion is mounted on the outside of the outer edge shape of the first portion when viewed from the extending direction of the first portion. Has a protruding part.

  This bent pipe is a direction in which the first part extends using the convex portion so that the bent pipe will not be displaced in the direction in which the first part extends when the bent pipe is attached to the attachment object. It becomes possible to stabilize the attachment to the.

  The bent pipe of the sixth invention is the bent pipe of the fifth invention, wherein the first portion has a substantially cylindrical shape. The convex portion is formed so as to border a portion of the outer edge of the first portion excluding a portion overlapping the second portion when viewed from the extending direction of the first portion.

  This bent pipe is so shaped that the mounting shape used for mounting on the mounting target object borders the portion of the outer edge of the first portion excluding the portion overlapping the second portion when viewed from the direction in which the first portion extends. Since it is formed large, it becomes possible to stabilize the attachment with respect to an attachment target object.

  The bent pipe of the seventh invention is the bent pipe of any one of the first to sixth inventions, and the angle formed by the extending direction of the second portion and the extending direction of the first portion is approximately 90 degrees.

  In this bent pipe, since the angle formed by the first part and the second part is approximately 90 degrees, the width in the extending direction of the first part in a state where the bent pipe is attached to the attachment target may be shortened. It becomes possible.

A bent pipe joined body according to an eighth aspect includes the bent pipe according to any of the first to seventh aspects and a joining member. A joining member joins the to-be-attached shape which is at least one part of an attachment target object, and an attachment shape.

This bent pipe joined body can make the shape necessary for joining compact.

Bending the pipe assembly of the ninth invention, in the bending pipe assembly of the eighth invention, the bonding member in a state in which the bending pipe is attached to the attachment object, when viewed from the extending direction of the first portion The second portion is substantially U-shaped with the side on which the second portion extends being the upper side. By elastically deforming so that the distance between the one end and the other end of the substantially U shape is widened, the bent portion and the attachment object are held from the outside.

Since this bent pipe joined body is substantially U-shaped, both members can be joined after the bent pipe is attached to the attachment object, and the attachment can be stabilized by elastic deformation.

Bending the pipe assembly of the tenth invention, in the bending pipe assembly of the ninth invention, at least the bending joint contact portion in contact with the pipe bend to holding the pipe from the outside of the joint member, and bending the pipe Of these, at least the bending contact portion where the bonding contact portion is in contact extends in a direction substantially perpendicular to the track surface during deformation from the state where the bonding member is not elastically deformed to the state where it is elastically deformed. It has a surface shape.

In this bent pipe joined body, in a state where the joining member joins the bent pipe and the object to be mounted, the joining contact portion of the joining member and the bending contact portion of the bent piping are in contact with each other in a plane parallel state. For this reason, it is possible to secure a wide contact area, and it is possible to suppress the displacement of the joining position between the joining member and the bent pipe.

Bending the pipe assembly of the eleventh invention, in the bending pipe assembly of the tenth invention, the second portion, the outer edge when viewed from the direction of extension of the second portion is a substantially arc shape.

In this bent pipe joined body, the second part has a substantially cylindrical shape at the other part, so that the pressure resistance can be ensured. And even if the outer edge of the second part is substantially arc-shaped when viewed from the extending direction of the second part of the bent pipe, the joining member is joined along the substantially arc-shaped part of the outer edge of the second part. It can suppress that a position shifts | deviates. Therefore, it is possible to ensure the pressure strength while suppressing the displacement of the joining position between the joining member and the bent pipe.

Bending the pipe assembly of the twelfth invention, in any one of the bending pipe assembly of the 11th invention of the ninth aspect of the present invention, the bonding member, while joining the bending attachment object pipe, the first portion extending It restricts that the mounting shape of the bent part moves toward the opposite side to the direction in which it is present. The bent portion of the bent pipe is located on the opposite side of the mounting shape from the side on which the first portion extends, between the protruding portion and the mounting shape. And a recessed portion that is recessed inward and does not contact the bonding member.

In this bent pipe joined body, the joining member can be positioned by contacting the radially outer part of the protruding part and the radially outer part of the mounting shape among the bent parts of the bent pipe. That is, the arrangement relationship between the joining member and the bent pipe when viewed from the direction in which the first portion extends is such that a part on the radially inner side of the joined member contacts a part on the radially outer side of the protruding part of the bent pipe. Can be determined. Furthermore, the positional relationship between the joining member and the bent pipe in the direction in which the first member extends is determined by contact between a part of the joining member and the mounting shape of the bent pipe. Thereby, positioning of the joining member with respect to bending piping can be stabilized.

The bent pipe assembly of the thirteenth aspect includes a bent pipe and a joining member. The bending pipe includes a first part, a second part, and a bending part. The second portion extends in a direction different from the direction in which the first portion extends. The bent portion connects the first portion and the second portion, and has an attachment shape that is used for attachment to the attachment object. A joining member joins the to-be-attached shape which is at least one part of an attachment target object, and an attachment shape. When the bending member is attached to the attachment object and the joining member is viewed from the direction in which the first pipe extends, the joining member has a substantially U shape with the side on which the second pipe extends extending upward. Yes. By elastically deforming so that the distance between the one end and the other end of the substantially U shape is widened, the bent portion and the attachment object are held from the outside. The joining member regulates that the attachment shape of the bending portion moves toward the opposite side to the direction in which the first portion extends in a state where the attachment object and the bending pipe are joined. The bent portion of the bent pipe is located on the opposite side of the mounting shape from the side on which the first portion extends, between the protruding portion and the mounting shape. And a recessed portion that is recessed inward and does not contact the bonding member.

In this bent pipe joined body, the joining member can be positioned by contacting the radially outer part of the protruding part and the radially outer part of the mounting shape among the bent parts of the bent pipe. That is, the arrangement relationship between the joining member and the bent pipe when viewed from the direction in which the first portion extends is such that a part on the radially inner side of the joined member contacts a part on the radially outer side of the protruding part of the bent pipe. Can be determined. Furthermore, the positional relationship between the joining member and the bent pipe in the direction in which the first member extends is determined by contact between a part of the joining member and the mounting shape of the bent pipe. Thereby, positioning of the joining member with respect to bending piping can be stabilized.

Bending the pipe joint of the fourteenth invention, in the bending pipe joint of thirteenth aspect, the bonding member, while joining the pipe bending attachment object, when viewed from the direction in which the first member extending at least It has a portion whose inside is a substantially arc shape. The value of the inner diameter of the substantially arc-shaped portion of the joining member / the distance between the upper ends of the substantially U-shaped portion of the substantially arc-shaped portion of the joining member is 1.6 to 1.8.

In this bent pipe joined body, the joining member can more stably join the bent pipe and the attachment object.

A bent pipe joined body according to a fifteenth aspect includes a bent pipe and a joining member. The bending pipe includes a first part, a second part, and a bending part. The second portion extends in a direction different from the direction in which the first portion extends. The bent portion connects the first portion and the second portion, and has an attachment shape that is used for attachment to the attachment object. A joining member joins the to-be-attached shape which is at least one part of an attachment target object, and an attachment shape. The attachment shape has an outer edge when viewed from the direction in which the first portion extends, and has a substantially arc shape, and at least a part of the approximately arc shape has a bulging portion bulging outward in the radial direction. The joining member has a portion located radially inward from the radially outer end of the bulging portion when viewed from the direction in which the first portion extends in a state where the attachment object and the bent pipe are joined. And has a joint surrounding portion covering the bulging portion from the outside in the radial direction.

In this bent pipe joined body, since the joining member covers the bulging part of the mounting shape from the outside in the radial direction, in the state where the mounting object and the bent pipe are joined, it is viewed from the direction in which the first part extends. Even if the outer edge of the attachment shape is a substantially arc shape, the rotation of the joining member can be suppressed.

  A hot water supply apparatus according to a sixteenth aspect includes the bent pipe assembly according to any one of the eighth to fifteenth aspects and a tank. The tank is an object to be bent pipe attached, has a shape to be attached, and can store water.

  This hot water supply apparatus can be made compact.

  In the bent pipe of the first invention, the width from the mounting position to the bending position can be shortened. Further, it is possible to eliminate the influence of the mounting shape on the dimension in the direction in which the first portion extends in a state where the bent pipe is mounted on the mounting target.

  In the bent pipe of the second invention, the width in the first direction when the bent pipe is attached to the attachment object can be shortened.

  In the bent pipe of the third invention, the pressure resistance can be increased.

  In the bent pipe of the fourth invention, it is possible to attach the bent pipe to the attachment object from the outside.

  In the bent pipe of the fifth invention, it is possible to stabilize the attachment so that the bent pipe does not come off in the extending direction of the first portion.

  In the bent pipe of the sixth invention, it is possible to stabilize the attachment to the attachment object.

  In the bent pipe of the seventh invention, it is possible to shorten the width in the extending direction of the first portion in a state where the bent pipe is attached to the attachment object.

In the bent pipe joined body of the eighth invention, the shape necessary for joining can be made compact.

In the bent pipe joined body of the ninth invention, it becomes possible to stabilize the attachment by elastic deformation.

In the bent pipe joined body of the tenth invention, it is possible to secure a wide contact area and to suppress the shift of the joining position between the joining member and the bent pipe.

In the bent pipe joined body of the eleventh invention, it becomes possible to ensure the pressure resistance while suppressing the displacement of the joining position between the joining member and the bent pipe.

In the bent pipe joined body of the twelfth invention, positioning of the joining member with respect to the bent pipe can be stabilized.

In the bent pipe joined body of the thirteenth invention, the positioning of the joining member with respect to the bent pipe can be stabilized.

In the bent pipe joined body of the fourteenth aspect, the joining member can join the bent pipe and the attachment object more stably.

In the bent pipe joined body according to the fifteenth aspect, rotation of the joining member can be suppressed.

  In the hot water supply device according to the sixteenth aspect of the invention, it is possible to reduce the size.

  Hereinafter, based on the drawings, a hot water supply apparatus 1 including an L-shaped pipe 60 that employs a compact mounting shape according to an embodiment of the present invention will be described.

<Schematic configuration of water heater>
In FIG. 1, the general | schematic external appearance perspective view of the hot-water supply apparatus 1 is shown. FIG. 2 shows a front view of the hot water storage unit 3. FIG. 3 shows a side view of the hot water storage unit 3. FIG. 4 shows a schematic cross-section regarding the size of the hot water storage unit 3. FIG. 5 shows a front view of the heat pump unit 2. FIG. 6 shows a side view of the heat pump unit 2.

  The hot water supply device 1 includes a hot water storage unit 3 that stores hot water, and a heat pump unit 2 that has a refrigerant circuit for heating water.

  As shown in FIG. 4, the hot water storage unit 3 has a casing having a length of 560 mm and a width of 430 mm in order to reduce the space required for installation. A hot water storage tank 30 capable of storing 180 liters of water / hot water is accommodated inside the housing.

  The heat pump unit 2 uses a refrigerant circuit to produce hot water by heat exchange with water stored in the hot water storage unit 2.

<Schematic configuration of hot water storage unit>
FIG. 7 shows an external perspective view of the tank unit 4 accommodated in the hot water storage unit 3. FIG. 8 shows an exploded perspective view of internal components of the hot water storage unit 3.

  The tank unit 4 is an assembly in which the casing is removed from the hot water storage unit 3, and mainly includes the hot water storage tank 30, the piping 40, the heat insulating materials 41 to 45, the casings 31 to 35, the electrical component unit 95, and the like. Yes.

  The hot water storage tank 30 is designed so that the area of the sectional shape in the top view is reduced in order to narrow the installation space of the hot water storage unit 2, and the vertical width is longer than the horizontal width. And has an attachment target pipe 50 extending upward from the vicinity of the upper end.

  The pipe 40 has an L-shaped pipe 60 used for joining with the hot water storage tank 30.

  The heat insulating material has a first side heat insulating part 41, a second side heat insulating part 42, a bottom heat insulating part 43, a top heat insulating part 44, and an upper lid heat insulating part 45, and these cover and insulate the outer periphery of the hot water storage tank 30. .

  The housing includes a top plate 31, a first side plate 34, a second side plate 35, a front panel 33, and a support base 32. The front panel 33 is provided with water supply panels 33c and 33d to which a controller opening 33a, a controller window 33b, a water supply port and the like are attached.

  The electrical component unit 95 controls various devices.

<L-shaped piping arrangement>
FIG. 9 is a side view showing the state where the L-shaped pipe 60 is attached to the hot water storage tank 30. FIG. 10 shows a top view in a state where the L-shaped pipe 60 is attached to the hot water storage tank 30.

  The L-shaped pipe 60 is attached in the vicinity of the upper end of the hot water storage tank 30, and is disposed in the tank unit 4 at a position that constitutes the upper end in the vertical direction.

  In addition, as shown in FIG. 9, hereinafter, the substantially vertical direction in which the mounting cylindrical portion 51 and the connecting pipe portion 61 extend may be referred to as a first direction L1. Further, the direction in which the connecting pipe portion 62 extends may be referred to as a second direction L2.

<Schematic configuration of the target piping 50>
In FIG. 11, the side view about the shape of the piping 50 for attachment is shown.

  The attachment target pipe 50 has an attachment cylindrical portion 51 and an attachment connection edge 57.

  The attachment cylindrical portion 51 is a cylindrical pipe that extends upward from the vicinity of the upper end of the hot water storage tank 30 and has a vertical axis direction.

  The attachment connecting edge 57 is formed at the upper end of the attachment cylindrical portion 51 so as to extend outward in the radial direction toward the outside of the attachment cylindrical portion 51. When viewed from the first direction L1, the mounting connection edge 57 has an arc shape at the outer edge.

<Schematic configuration of L-shaped piping 60>
FIG. 12 shows a side view of the L-shaped pipe. FIG. 13 shows a top view of the L-shaped pipe. FIG. 14 is a side sectional view of the L-shaped pipe. Side surface sectional drawing in the AA cross section shown to FIG. 15, FIG. 13 is shown. FIG. 16 is a partial enlarged view of a portion B in FIG.

  The L-shaped pipe 60 is a pipe through which hot water or water from the hot water storage tank 30 passes, and is formed of a resin such as PPS (polyphenylene sulfide). The L-type pipe 60 is a resin connecting pipe portion 61, a connecting pipe portion 62, and a bent portion 80. It is constituted by.

  The connecting pipe portion 61 is a portion located below the portion indicated by the YY line in FIG. 12, and when joined to the mounting target pipe 50 described above, on the radially inner side of the mounting cylindrical portion 51. It is a part to be located. The connecting pipe portion 61 has a substantially cylindrical shape with the axial direction as the first direction L1.

  The connecting piping portion 62 is a portion located on the left side from the portion indicated by the line XX in FIG. The connecting pipe portion 62 has a substantially cylindrical shape with the second direction L2 as the axial direction. The connecting pipe portion 62 is bent at an angle of approximately 90 degrees with respect to the axial direction of the connecting pipe portion 61.

  The bent portion 80 is located between the portion indicated by the XX line and the portion indicated by the YY line in FIG. 12, and is a portion connecting the connecting piping portion 61 and the connecting piping portion 62. It has a first plane portion 81, a second plane portion 82, a horizontal positioning portion 85, a recess portion 86, a bending connection edge 87 and a bending projection portion 89. Hereinafter, the “bending radial direction” means the radial direction of a circle having the horizontal direction as the axial direction in the bent portion 80.

  The 1st plane part 81 is a surface which spreads in the 1st direction L1 and the 2nd direction L2, and is a part which the 1st clamping part 71 of the quick fastener 70 mentioned later contacts from a bending radial direction outer side.

  The 2nd plane part 82 is a surface which spreads in the 1st direction L1 and the 2nd direction L2, and is a part which the 2nd clamping part 72 of the quick fastener 70 mentioned later contact | abuts from a bending radial direction outer side.

  As shown in FIGS. 15 and 16, the horizontal positioning portion 85 has a shape protruding outward in the bending radial direction. And the bending radial direction outer side edge part of this horizontal positioning part 85 is a part which contact | connects the inner side of the quick fastener 70 mentioned later.

  As shown in FIGS. 15 and 16, the bending connection edge portion 87 has a shape further protruding than the horizontal positioning portion 85 toward the outside in the bending radial direction. A portion of the bending connection edge 87 that is located further outward than the outer edge of the horizontal positioning portion 85 in the bending radial direction passes through a first opening 77 and a second opening 78 of the quick fastener 70 described later, and the quick fastener 70. It is the part which penetrates in the plate | board thickness direction. Note that the connecting piping portion 61 and the connecting piping portion 62 are not formed with a portion protruding outward in the radial direction of each piping, which corresponds to the bending connecting edge portion 87 of the bent portion 80.

  As shown in FIGS. 15 and 16, the recessed portion 86 is located between the horizontal positioning portion 85 and the bending connection edge portion 87 in the first direction L1, and the outer edge in the bending radial direction is the horizontal positioning portion 85. And it is formed so that it may be located in the bending radial direction inside rather than any of the bending connection edge part 87. FIG.

  As shown in FIG. 14, the bending projection portion 89 has a bending diameter of the bending connection edge portion 87 on the side opposite to the connecting pipe portion 62 side in the second direction L <b> 2 among the horizontal positioning portion 85 and the recessed portion 86. It is the part formed extending to the same position as the direction outer side end. The bent projection 89 is surrounded by an encircling shape 79 of the quick fastener 70 described later.

  It should be noted that the positions of the bending connection edge portion 87, the recessed portion 86, the horizontal positioning portion 85, and the bending projection portion 89 in the first direction L1 are within the range from the upper end to the lower end of the bending portion 80.

<Schematic configuration of quick fastener 70>
FIG. 17 shows an external perspective view of the quick fastener. FIG. 18 shows a side view of the quick fastener. FIG. 19 shows a top view of the quick fastener.

  As shown in FIG. 19, the quick fastener 70 is a plate-shaped metal member having a substantially U shape in a top view, and is a member that holds the bent portion 80 of the L-shaped pipe 60 from the outside in the bending radial direction. , First clamping portion 71, second clamping portion 72, first arc portion 73, second arc portion 74, first guide 75, second guide 76, first opening 77, second opening 78 and surrounding shape portion 79. The quick fastener 70 is substantially U-shaped when viewed from above, and a part of the quick fastener 70 has a circular arc shape. Hereinafter, the arc of a part of the substantially U-shape that is arc-shaped may be referred to as a “U-shaped arc”.

  The first arc portion 73 is formed to bulge in a direction away from the other end side between the lower portion and the upper one end portion of the substantially U-shaped U-shape. It has become a part of.

  The second arc portion 74 is formed to bulge in a direction away from the one end side between the lower portion and the upper other end portion of the substantially U-shaped U-shape. It is a part of the same circular arc as the circular arc of one circular arc portion 73.

  The first holding portion 71 constitutes the upper end portion of the substantially U-shaped U-shaped portion of the first arc portion 73.

  The second holding portion 72 constitutes the upper end portion of the substantially arcuate U-shaped portion of the second arc portion 72.

  The first guide 75 extends in a direction away from the center of the U-shaped arc on the upper side of the first holding portion 71 of the substantially U-shaped U-character.

  The second guide 76 extends in a direction away from the center of the U-shaped arc on the upper side of the second holding portion 72 of the substantially U-shaped U-character.

  The encircling shape portion 79 has a shape in which a part of the lower portion of the substantially U-shaped U-shape further bulges downward.

  As shown in FIGS. 17 and 18, the first opening 77 is formed so as to be continuous with a part of the surrounding part 79 and a part of the first arc part 73, the first holding part 71 and the first guide 75. It is an opening penetrating in the thickness direction.

  As shown in FIGS. 17 and 18, the second opening 78 is formed so as to be continuous with a part of the surrounding part 79 and a part of the second arc part 74, the second holding part 72, and the second guide 76. It is an opening penetrating in the thickness direction.

  In the quick fastener 70, the linear distance from the inside of the first arc portion 73 to the inside of the second arc portion 72 is the value of the inner diameter / the straight line from the first holding portion 71 to the second holding portion 72. 1.6 to 1.8.

<Pipe connection with quick fastener 70>
FIG. 20 is a top view showing a state where the L-shaped pipe is held by the quick fastener.

  Here, a state where the attachment target pipe 50 and the L-shaped pipe 60 are joined by the quick fastener 70 will be described.

  First, the connecting pipe portion 61 of the L-shaped pipe 60 is inserted inside the mounting cylindrical portion 51 of the mounting target pipe 50 in the radial direction. And the position of the radial direction outer edge of the attachment connection edge part 57 of the attachment object piping 50 and the position of the bending connection direction edge part 87 of the bending connection edge part 87 of the bending part 80 of the L-shaped piping 60 are match | combined.

  In this state, the attachment connection edge 57 of the attachment target pipe 50 and the bending connection edge 87 of the bent portion 80 of the L-shaped pipe 60 are the inner edge of the first opening 77 of the quick fastener 70 and the second opening 78. The quick fastener 70 is directed from the first guide 75 and the second guide 76 side of the quick fastener 70 toward the center in the axial direction of the attachment target pipe 50 and the L-shaped pipe 60 so that the inner edge is sandwiched from the first direction L1. Plug in.

  Accordingly, in the quick fastener 70, the first arc portion 73 and the second arc portion 74 are elastically deformed outward in the bending radial direction as indicated by C1 and C2 in FIG. For this reason, the quick fastener 70 exerts a force in the direction (F1 and F2 in FIG. 20) in which it returns from the elastically deformed state, and holds the attachment target pipe 50 and the L-shaped pipe 60 from the outside in the bending radial direction. be able to.

  Here, the first arc portion 73 and the second arc portion 74 of the quick fastener 70 are mainly in contact with the outer peripheral edge portion in the bending radial direction of the horizontal positioning portion 85 of the bent portion 80 of the L-shaped pipe 60. .

  In addition, the upper surface in the first direction L1 of the bent connection edge portion 87 of the bent portion 80 of the L-shaped pipe 60 is in contact with the upper edges of the first opening 77 and the second opening 78 of the quick fastener 70, The lower surface in the first direction L <b> 1 of the attachment connection edge 57 of the attachment target pipe 50 is in contact with the lower edges of the first opening 77 and the second opening 78 of the quick fastener 70. As a result, the movement of the bending connection edge portion 87 of the bent portion 80 of the L-shaped pipe 60 and the attachment connection edge portion 57 of the attachment target pipe 50 toward each other in the first direction L1 is restricted.

  The first holding portion 71 of the quick fastener 70 is in surface contact with the first flat portion 81, and the second constant portion 72 of the quick fastener 70 is in surface contact with the second flat portion 82. Thereby, the outer edge of the quick fastener 70 is prevented from making point contact with the outer edge of the connecting pipe part 62 or the curved part of the outer edge of the bent part 80, and the joining state is stabilized.

  Further, the bent portion 80 of the L-shaped pipe 60 is provided with a bent protrusion portion 89, and this bent protrusion portion 89 is surrounded by the surrounding shape portion 79 of the quick fastener 70. It cannot be rotated around the center of the circular arc.

  In this manner, the L-shaped pipe 60 and the attachment connection edge 57 are joined by the quick fastener 70.

<About the feature of the hot water supply apparatus 1 of this embodiment>
In FIG. 24, the side view of the conventional L-shaped piping 960 is shown. FIG. 25 shows a cross-sectional side view of a conventional L-shaped pipe 960. In the conventional L-shaped pipe 950, the bent connection edge 87 referred to in this embodiment and the connection edge 987 to be compared are provided not in the bent part 80 but in the connection pipe part 61 referred to in this embodiment. For this reason, when joining the piping using the L-shaped piping 960, since the width | variety in the 1st direction L1 is large, the apparatus itself cannot be made compact.

  On the other hand, in the L-shaped pipe 60 used in the hot water supply apparatus 1 of the present embodiment, the bent connection edge portion 87 is provided in the bent portion 80, and therefore the connection pipe portion 61 is attached to the attachment target pipe 50. Then, the bent portion 80 is reached immediately from the connecting pipe portion 61, and the upper end portion in the first direction L1 of the attachment target pipe 50 and the lower end portion of the connecting pipe portion 62 can be in substantially the same position in the first direction L1. . Thereby, the dimension of the tank unit 4 in the first direction L1 can be made compact.

<Modification>
Although specific embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

(A)
In the hot water supply apparatus 1 according to the above embodiment, the L-shaped pipe 60 having a substantially L shape has been described as an example.

  However, the present invention is not limited to this. For example, as shown in FIG. 21, it is good also as the U-shaped piping 260 which is a substantially U-shaped piping. In the U-shaped pipe 260, a connecting pipe part 261 and a connecting pipe part 263 extend from different positions of the connecting pipe part 262 in substantially the same direction with respect to the connecting pipe part 262. Even in this case, a portion corresponding to the bending connection edge portion 87 in the above embodiment can be accommodated inside the radial width of the connecting pipe portion 262, and the size can be reduced.

(B)
In the hot water supply apparatus 1 according to the above embodiment, the L-shaped pipe 60 having a substantially L shape has been described as an example.

  However, the present invention is not limited to this. For example, as shown in FIG. 22, a Z-shaped pipe 360 that is a substantially Z-shaped pipe may be used. In the Z-shaped pipe 360, a connecting pipe part 361 and a connecting pipe part 363 extend from different positions of the connecting pipe part 362 in substantially opposite directions to the connecting pipe part 362, respectively. Even in this case, a portion corresponding to the bending connection edge portion 87 in the above embodiment can be accommodated inside the radial width of the connecting pipe portion 362, and the size can be reduced.

(C)
In the hot water supply apparatus 1 according to the above embodiment, the L-shaped pipe 60 having a substantially L shape has been described as an example.

  However, the present invention is not limited to this. For example, as shown in FIG. 23, a fine L-shaped pipe 460 which is a fine substantially L-shaped pipe may be used. The minute L-shaped pipe 460 has a connecting pipe part 461 extending from the connecting pipe part 462, and has a connecting pipe part 463 provided at an end on the extension line of the connecting pipe part 462. Even in this case, the portion corresponding to the bending connection edge portion 87 in the above embodiment can be accommodated inside the radial width of the connecting pipe portion 462, and the size can be reduced.

(D)
In the hot water supply device 1 according to the above embodiment, the case where the L-shaped pipe 60 is joined to the attachment target pipe 50 using the quick fastener 70 has been described as an example.

  However, the present invention is not limited to this. For example, even if the L-shaped pipe 60 is joined to the installation target pipe 50 by pressing from the upper side in the vertical direction of the L-shaped pipe 60 by the upper lid heat insulating material 45 and the top plate 31 of the hot water storage tank 30 and applying a downward force. Good.

(E)
In the hot water supply device 1 according to the above embodiment, the case where the L-shaped pipe 60 is joined to the attachment target pipe 50 using the quick fastener 70 has been described as an example.

  However, the present invention is not limited to this. For example, the L-shaped pipe 60 and the L-shaped pipe 60 can be screwed together while passing the screws in the vertical direction at the overlapping portion of the bent connecting edge 87 of the L-shaped pipe 60 and the mounting connection edge 57 of the mounting target pipe 50. The attachment target pipe 50 may be joined.

(F)
In the hot water supply apparatus 1 according to the above-described embodiment, the case where the L-shaped pipe 60 is employed as a hot water supply pipe of the hot water supply apparatus 1 has been described as an example.

  However, the present invention is not limited to this. For example, you may utilize as refrigerant | coolant piping of the hot water supply apparatus 1. FIG. In addition, the present invention is not limited to the hot water supply apparatus 1 and may be appropriately applied to a refrigeration apparatus such as an air conditioner that requires compactness.

(G)
The above-described embodiment and examples given as modifications thereof are also included in the present invention by appropriately combining them in a manner that can be implemented by those skilled in the art based on the above description.

  The bending pipe according to the present invention is designed to be compact, for example, because the width from the mounting position to the bending position can be shortened even if it has a mounting shape used for mounting to the mounting object. It is useful as piping for hot water supply equipment.

It is a general | schematic external appearance perspective view of a hot-water supply apparatus. It is a front view of a hot water storage unit. It is a side view of a hot water storage unit. It is a schematic upper cross section regarding the size of a hot water storage unit. It is a front view of a heat pump unit. It is a side view of a heat pump unit. It is an external appearance perspective view of the tank unit accommodated in the hot water storage unit. It is a disassembled perspective view of the internal component of a hot water storage unit. It is a side view in the state where L type piping was attached to a hot water storage tank. It is a top view in the state where L type piping was attached to the hot water storage tank. It is a side view which shows the shape of attachment object piping. It is a side view of L type piping. It is a top view of L-shaped piping. It is side view sectional drawing of L type piping. FIG. 14 is a side cross-sectional view of the AA cross section shown in FIG. 13. It is the elements on larger scale of the B section in FIG. It is an external appearance perspective view of a quick fastener. It is a side view of a quick fastener. It is a top view of a quick fastener. It is a top view which shows the state in which L type piping is pinched with the quick fastener. It is a side view of L type piping of a modification (A). It is a side view of L type piping of a modification (B). It is a side view of L type piping of a modification (C). It is a side view of the conventional L-shaped piping. It is sectional drawing of the side view of the conventional L-shaped piping.

1 Hot water supply device 2 Heat pump unit 3 Hot water storage unit 3
30 Hot water storage tank (tank)
50 Piping for mounting (mounting object)
51 Mounting cylindrical part 57 Mounting connection edge (attached shape)
60 L-shaped piping (bending piping)
61 Connection piping part (first part)
62 Connecting piping part (second part)
70 Quick fastener (joining member)
71 1st holding part (joining contact part)
72 2nd clamping part (joining contact part)
73 1st circular arc part (joining contact part)
74 Second arc part (joining contact part)
75 1st guide 76 2nd guide 77 1st opening 78 2nd opening 79 Surrounding shape part (joining surrounding part)
80 Bending part 81 First plane part (bending contact part)
82 Second plane part (bending contact part)
85 Horizontal positioning part (protruding part)
86 Indentation (Indentation)
87 Bending connection edge (mounting shape, convex part)
89 Bending protrusion (bulging part)

Claims (16)

A bent pipe (60) attached to an attachment object,
A first part (61);
A second portion (62) extending in a direction different from a direction in which the first portion extends;
A bent portion (80) having an attachment shape utilized for connecting the first portion and the second portion and attaching to the attachment object;
With
The bent portion is attached in a position that fits inside the width of the second portion in the direction in which the first portion extends.
Bending pipe (60). The first part and the second part are not formed with a shape used for attachment to the attachment object.
The bent pipe according to claim 1. The second portion is substantially cylindrical.
The bending pipe according to claim 1 or 2 . The mounting shape of the bent portion is formed on the outer surface,
The bending pipe according to any one of claims 1 to 3. The mounting shape of the bent portion has a convex portion (87) protruding outward from the outer edge shape of the first portion when viewed from the extending direction of the first portion.
The bending pipe according to any one of claims 1 to 4. The first portion has a substantially cylindrical shape,
The convex portion (87) is formed so as to border a portion of the outer edge of the first portion excluding the portion overlapping the second portion when viewed from the extending direction of the first portion.
The bending pipe according to claim 5. The angle formed by the extending direction of the second part and the extending direction of the first part is approximately 90 degrees.
The bending pipe according to any one of claims 1 to 6. A bent pipe (60) according to any one of claims 1 to 7;
A joining member (70) for joining the attached shape (57), which is at least part of the attachment object (50), and the attachment shape (87);
A bent pipe assembly (60, 70) comprising: When the bending member is attached to the attachment object, the joining member is substantially U with the second part extending upward when viewed from the direction in which the first part extends. It has a letter shape,
By elastically deforming so that the distance between the one end and the other end of the substantially U shape widens, the bent portion and the attachment object are sandwiched from the outside.
The bent piping assembly according to claim 8. Among the joining members, at least the joining contact portion is in contact with the joining contact portions (71, 72) that are in contact with the bending piping in order to sandwich at least the bending piping from the outside, and the bending piping. The bending contact part (8 1 ) is
The joining member has a surface shape that spreads in a direction substantially perpendicular to the raceway surface during deformation from a state in which it is not elastically deformed to a state in which it is elastically deformed,
The bent piping assembly according to claim 9. The outer edge of the second part when viewed from the extending direction of the second part has a substantially arc shape.
The bent piping assembly according to claim 10. The joint member regulates that the attachment shape of the bent portion moves toward the opposite side to the direction in which the first portion extends in a state where the attachment object and the bent pipe are joined. And
The bent portion of the bent pipe has a protruding portion (85) protruding outward and in contact with the inner side of the joining member on a side opposite to the side where the first portion extends with respect to the mounting shape; A recessed portion (86) that is recessed inwardly between the protruding portion (85) and the mounting shape (87) and does not contact the joining member;
The bent pipe joined body according to any one of claims 9 to 11. The first part (61), the second part (62) extending in a direction different from the direction in which the first part extends, the first part and the second part are connected, and the attachment object A bent pipe (60) with a bent portion (80) having a mounting shape (87) utilized for mounting;
A joining member (70) for joining the attached shape (57), which is at least part of the attachment object (50), and the attachment shape (87);
With
When the bending member is attached to the attachment object, the joining member is substantially U with the second part extending upward when viewed from the direction in which the first part extends. It has a letter shape,
By elastically deforming so that the distance between the one end and the other end of the substantially U shape is widened, the bent portion and the attachment object are sandwiched from the outside,
The joint member regulates that the attachment shape of the bent portion moves toward the opposite side to the direction in which the first portion extends in a state where the attachment object and the bent pipe are joined. And
The bent portion of the bent pipe has a protruding portion (85) protruding outward and in contact with the inner side of the joining member on a side opposite to the side where the first portion extends with respect to the mounting shape; A recessed portion (86) that is recessed inwardly between the protruding portion (85) and the mounting shape (87) and does not contact the joining member;
Bent piping assembly (60, 70). The joining member has a portion in which at least the inner side has a substantially arc shape when viewed from the direction in which the first member extends in a state where the attachment object and the bent pipe are joined.
The inner diameter of the substantially arc-shaped portion of the joining member / the value of the distance between the upper ends of the substantially U-shaped portion of the substantially arc-shaped portion of the joining member is 1.6 to 1.8.
The bent piping assembly according to claim 13. The first part (61), the second part (62) extending in a direction different from the direction in which the first part extends, the first part and the second part are connected, and the attachment object A bent pipe (60) with a bent portion (80) having a mounting shape (87) utilized for mounting;
A joining member (70) for joining the attached shape (57), which is at least part of the attachment object (50), and the attachment shape (87);
With
The mounting shape is such that an outer edge when viewed from the extending direction of the first portion has a substantially arc shape, and a bulging portion (89) in which at least a part of the substantially arc shape bulges outward in the radial direction. Have
The joining member is
In a state where the attachment object and the bent pipe are joined, when viewed from the direction in which the first portion extends,
It has a portion located radially inward from the radially outer end of the bulging portion (89), and has a joint enclosure portion (79) covering the bulging portion from the radially outer side. Yes,
Bending piping assembly. The bent piping assembly according to any one of claims 8 to 15,
A tank (30) which is the attachment object (50), has a mounted shape (57), and can store water;
A hot water supply device (1).

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