JP5656056B2 - Internal and external communication members and heat source equipment - Google Patents

Description

  The present invention relates to a member that forms a communication port such as a water supply / drain port or a fuel supply port in a housing of a heat source device, and also relates to a heat source device including such a member.

  2. Description of the Related Art Conventionally, a heat source device that includes a combustion device such as a burner and a heat exchanger inside a housing, burns supplied fuel, and supplies heat via a heat medium such as hot water is widely known. As this heat source machine, a multifunctional heat source machine that can use the supplied heat for various purposes such as hot water supply, heating, hot water storage in a bathtub, and the like is widely used.

Such heat source machines include those having a through-hole formed on the wall surface of the housing and inserting a pipe extending into and out of the housing into the through-hole, and those having a metal fitting communicating with the outside through the housing.
As the latter configuration, for example, there is one provided with a metal fitting that relays the inside and outside of the housing. That is, a pipe is connected to the metal fitting from the inside of the housing, and a tubular member such as a pipe or a plug member such as a drain plug is attached to the metal fitting from the outside of the housing to communicate the inside and outside of the housing. Furthermore, as in the invention disclosed in Patent Document 1, there is one in which a through hole provided in a wall surface of a housing is provided with a metal fitting serving as a water or drain outlet. That is, a tubular member such as a pipe is attached to the metal fitting from the inside of the housing, and water and drain are discharged from the metal fitting to the outside.

JP 2008-134012 A

  By the way, depending on the reason that the number, size, shape, etc. of the pipes connected to the heat source device from the outside of the housing are limited, the design of the heat source device itself, etc., the water supply / drain port, the fuel supply port, the drain discharge port, etc. In some cases, the communication port that connects the inside and outside of the housing is concentrated on a specific part of the wall surface of the housing. At this time, if the metal fittings that form the communication port are individually attached to the housing, the work of attaching the metal fitting to the housing is complicated. Therefore, generally, in such a case, a configuration in which a plurality of communication ports are formed by one metal fitting has been adopted. That is, as shown in FIG. 18, a metal fitting 111 in which a plurality of parallel tubular parts 112 are integrated is used, and each tubular part 112 of the metal fitting 111 is used as a separate communication port. . As a result, since a plurality of communication ports can be formed in the housing simply by attaching one metal fitting 111 to the housing, the work of attaching the metal fitting to the housing can be simplified.

  However, such a metal fitting 111 has a problem that a space having a predetermined area is required when pipes are attached. In other words, since the tubular portions 112a, 112b, and 112c of the metal fitting 111 are located close to each other, the pipe that has already been installed, and the pipe fixing member that is used for tightening or preventing the pipe from being attached are used for installing a new pipe or pipe fixing member. It may be a hindrance. In this case, a new pipe or the like must be attached while avoiding the already attached pipe or the like, and a space having a predetermined area is required to avoid the already attached pipe or the like.

  Furthermore, such a metal fitting 111 has a problem that it is difficult to attach a pipe. This is because if the pipe is attached to one metal fitting 111, the position of the metal fitting 111 is fixed by the pipe already attached. That is, when the first pipe is connected to the first tubular portion 112a of the metal fitting 111, the metal fitting can be freely moved with respect to the end of the pipe. However, when the second and subsequent pipes are connected to the remaining tubular portions 112b and 112c, the metal fitting 111 can be moved only within the range of bending of the pipes already connected to the tubular portions 112a. Since some pipes are made of a material that is difficult to bend such as stainless steel, it is difficult to align the pipes and metal fittings to be mounted later. Moreover, if it tries to align forcibly, piping may deform | transform. Therefore, in the alignment of the second and subsequent pipes and the metal fitting 111, the metal fitting 111 cannot be moved freely and easily with respect to the pipe, making it difficult to install the pipe.

  By the way, in recent years, a heat source machine that can be installed in a narrow place has been desired from the market, and a heat source machine that has been reduced in size has been developed to meet such a demand. In such a heat source machine, the internal space of the heat source machine becomes substantially narrow. Therefore, the development of metal fittings that can attach pipes even in a narrow area has been desired.

  Therefore, in view of the above-described problems of the prior art, the present invention facilitates pipe connection work even in a narrow space, and can provide a plurality of communication ports in the housing of the heat source machine with simple attachment. It is an issue to provide. In addition, an object of the present invention is to provide a heat source machine including such an internal / external communication member.

The invention according to claim 1 for solving the above-mentioned problem is an internal / external communication member that is attached to the inner wall surface of a housing in which piping is built, and opens a pipe line of the piping in the housing to the outside. In the inner and outer communication members, each of the tube end members has a plurality of separate and independent tube end members, and each tube end member can be connected to a pipe in the housing, and each tube end member can be integrated together. And a plurality of tube end members can be integrally coupled via the connection member, and the tube end member is non-rotatably locked with respect to the connection member. An engaging portion that is formed on at least one of the connecting member and the tube end member,
The locking portion is formed by a locking projection formed on one of the tube end member and the connecting member and a locking groove formed on the other, and the locking projection The engaging groove is formed with a pair of engaging portions separately from the engaging groove and the engaging groove, and the engaging protrusion is inserted into the engaging groove. In this state, the engaging portion is engageable, and the tube end member cannot be moved in the vertical direction with respect to the connecting member by the engaging portion .
The invention according to claim 1 is an internal / external communication member that is attached to the inner wall surface of a housing with a built-in pipe, and opens a pipe line of the piping in the housing to the outside, and includes a plurality of independent pipe ends. One of the characteristics is that each pipe end member can be connected to a pipe in the housing, and each pipe end member can be integrated together.

The internal / external communication member of the present invention has a plurality of pipe end members that can be connected to a pipe, and the pipe end members are separately independent. Therefore, when the pipe end member is attached to each pipe, the pipe end member can be freely moved with respect to the pipe to be attached. As a result, the pipe end member can be attached to the pipe in a state where positioning is easy. Furthermore, since independent pipe end members can be individually attached to the respective pipes, the pipe end members can be attached to the pipes at positions away from other pipes. Therefore, other adjacent pipes do not hinder the installation work. By these things, the internal / external communication member of this invention can perform the attachment work of piping easily. Further, the inner and outer communication members of the present invention can be integrated together. Therefore, a plurality of pipe end members can be attached to the inner wall of the housing at a time, and attachment work of the inner and outer communication members to the housing can be facilitated.
That is, the internal / external communication member of the present invention can easily perform the operation of attaching the pipe to the internal / external communication member and the operation of attaching the internal / external communication member to the housing. Therefore, the installation work and maintenance work of the heat source machine can be simplified.

Further, the invention according to claim 1 has a connecting member to which a plurality of pipe end members can be attached, and the plurality of pipe end members are integrally coupled via the connecting member .

  According to such a configuration, it is not necessary to form a connecting means with the other pipe end member on the pipe end member, and the shape of the pipe end member can be simplified. Thereby, the tube end member can be formed more firmly.

Furthermore the invention according to claim 1 is provided with a locking portion for locking the disabling rotating the tube end member relative to said connecting member, the locking portion is one of at least the pipe end member and said connecting member One of the characteristics is that it is formed in a crab .

According to this configuration, the plurality of tube end members can be integrated in a state in which they cannot rotate. Thereby, when attaching other members such as a plug member to the tube end member, a fastening element having a rotational motion such as a screw can be preferably used.
Specifically, for example, when a male screw part and a female screw part are formed on the plug member and the pipe end member, respectively, and both are attached, if the pipe end member rotates with respect to the connecting member, There is a risk of going around. In other words, the pipe end member is attached to the connecting member whose position is fixed with respect to the housing of the heat source device in a rotatable state, so that even if the plug member is rotated, the tube end member rotates together with the plug member. In other words, it may not be possible to screw them together. However, in the internal / external communication member of the present invention, the pipe end member can be locked with respect to the connecting member so as not to rotate, and this rotation can be reliably prevented. Therefore, such a plug member can be easily attached and detached.

Further, in the invention according to claim 1 , the locking portion is formed of a locking projection formed on one of the tube end member and the connecting member and a locking groove formed on the other. A pair of engaging portions are formed on the locking projection and the locking groove, respectively, and the engagement projection is inserted into the locking groove. One feature is that the joint portion can be engaged .

  According to this configuration, when the locking projection is fitted into the locking groove and the locking portion is operated, the engaging portion can be engaged. That is, in addition to the action of the locking portion, the engagement portion is engaged to prevent the rotation of the tube end member, so that the rotation of the tube end member can be more reliably prevented.

As a related invention, there is an internal / external communication member characterized in that a connecting means for integrally connecting a plurality of pipe end members is formed on the pipe end member .

  The internal / external communication member of the present invention may have a configuration in which connecting means for integrally connecting a plurality of pipe end members is provided on the pipe end member. When a plurality of tube end members are integrated by the connecting means of the tube end members, the number of parts can be reduced compared to a configuration in which the plurality of tube end members are integrated by a separately provided connecting member. Further, when a plurality of pipe end members are integrated by a connecting means for the pipe end members, and the pipe end members are gathered by a separately provided connecting member, the pipe end members can be gathered more firmly.

The invention of claim 2 is to burn the fuel supplied from the outside, a heat source which supplies heat through the hot water, water system, waste water system, according to claim 1 to at least one of the fuel supply system a heat source unit that comprising the inner and outer communication member according to.

The heat source apparatus according to the present invention includes the internal / external communication member according to claim 1, and the internal / external communication member can form a communication port such as a water supply / drainage port, a fuel supply port, a drain discharge port, or the like. Therefore, it is easy to attach and detach the piping extending from the equipment inside the housing to the communication port, and the installation work and the maintenance work can be simplified. In addition, even if the heat source device is downsized and the space inside the housing is narrow, it is possible to easily connect the piping to the communication port. Therefore, even if the heat source device is downsized, installation work and maintenance work are not complicated.

The internal / external communication member of the present invention has a plurality of pipe end members that can be connected to separate independent pipes. Therefore, each can be individually attached to the pipe, and there is an effect that the pipe is easily attached. In addition, since a plurality of pipe end members can be assembled, a plurality of pipe end members can be attached together to the housing, so that there is an effect that attachment work to the housing is easy. That is, the internal / external communication member of the present invention has an effect that both the attachment of the pipe to the internal / external communication member and the attachment of the pipe to the internal / external communication member can be facilitated.
Moreover, the heat source apparatus of this invention provided with such an internal / external communication member is easy to attach or detach to the communication port of the piping extended from the apparatus inside a housing. As a result, there is an effect that installation work and maintenance work can be simplified. In addition, even if the heat source device of the present invention is downsized and the internal space is narrow, it is possible to easily connect the piping to the communication port inside and outside the housing. Therefore, there is an effect that the installation work and the maintenance work are not complicated even if the heat source device is downsized.

It is a lineblock diagram showing the heat source machine concerning the embodiment of the present invention. It is the elements on larger scale of the A section of FIG. It is a perspective view which shows the internal / external communication member which concerns on embodiment of this invention. FIG. 4 is an exploded perspective view of the internal / external communication member of FIG. 3. FIG. 4 is a perspective view showing a tube end member of the inner and outer communication members of FIG. 3. It is the perspective view which looked at the pipe end member of Drawing 5 from the A direction. It is the front view which looked at the pipe end member of Drawing 5 from the B direction. It is CC sectional drawing of the pipe end member of FIG. It is a perspective view of the connection member of FIG. It is the perspective view which looked at the connection member of FIG. 9 from the A direction. It is explanatory drawing which shows a mode that a connection member is attached to the some pipe end member which attached piping, (a) shows the state which brought the connection member close to the pipe end member distribute | arranged to the position which adjoined, (b) The state which inclined the connection member with respect to each pipe end member is shown. It is explanatory drawing which shows a mode that a connection member is attached to a some pipe end member following FIG. 11, (c) shows the state which fitted each pipe end member in the connection member, (d) is each pipe end. The state which attached the connection member to the member is shown. It is explanatory drawing which shows a mode that the internal / external communication member which connected piping is attached to the internal wall surface of a heat-source equipment. It is a top view which shows the related invention, and shows the pipe end member of a form different from FIG. 5, (a) shows a pipe end member single-piece | unit, (b) gathers several pipe end members. Indicates the state. FIG. 15 shows a related invention, and is a plan view showing a pipe end member having a form different from that of FIGS. 5 and 14, wherein (a) shows a single pipe end member, and (b) shows a plurality of pipe end members. Shown in the assembled state. FIG. 16 is a plan view showing a pipe end member having a form different from that of FIGS. 5 , 14, and 15, wherein (a) shows a single pipe end member, and (b) shows a plurality of pipe ends. The state which assembled the member is shown. FIG. 17 shows a related invention, and is a perspective view showing a pipe end member having a form different from that of FIGS. 5 and 14 to 16, wherein (a) shows a single pipe end member, and (b) shows a plurality of pipe ends. The state which assembled the member is shown. It is a perspective view which shows the internal / external communication member of a prior art.

  Hereinafter, although embodiment of this invention is described in detail, this invention is not limited to these examples.

  As shown in FIG. 1, the heat source unit 1 includes a combustion unit 3 inside the housing 2, a primary heat exchanger 4 that mainly recovers sensible heat, a secondary heat exchanger 5 that mainly recovers latent heat, This is a latent heat recovery type hot / cold water heating device provided with a neutralization device 6 for neutralizing the drain generated in the secondary heat exchanger 5 and discharging it to the outside of the housing 2.

  In the heat source unit 1, the combustion unit 3 is provided at a position near the one side end on the upper side of the casing 2, and the primary heat exchanger 4 is positioned below the combustion unit 3. Furthermore, there is a storage case 7 for storing the secondary heat exchanger 5 below the primary heat exchanger 4, and the silencer 8 is located above the storage case 7 and to the side of the primary heat exchanger 4. . And the space which connects each inside of the primary heat exchanger 4, the storage case 7, and the muffling part 8 from the inside of the combustion part 2 is formed, and the combustion gas generated in the combustion part 3 can flow. A drain discharge port 9 is provided at the bottom of the storage case 7. The drain discharge port 9 functions as a discharge port for discharging the drain falling from the secondary heat exchanger 5 to the neutralization device 6 positioned below.

In the heat source unit 1, the combustion gas generated in the combustion unit 3 flows to the primary heat exchanger 4, the storage case 7, and the silencer 8, and is discharged to the outside through the exhaust port 8 b of the silencer 8.
On the other hand, hot water supplied from the outside is supplied to the secondary heat exchanger 5 through a water inlet pipe (not shown). And hot water flows into the primary heat exchanger 4 through the secondary heat exchanger 5. At this time, hot water is heated by the heat of the combustion gas recovered by the secondary heat exchanger 5 and the primary heat exchanger 4. And the heated hot water flows out from the water outlet of the primary heat exchanger 4, and is supplied toward the curan, a bathtub, etc. used as a hot-water supply destination.

By the way, since the secondary heat exchanger 5 mainly collects latent heat of the combustion gas, the temperature of the combustion gas in the secondary heat exchanger 5 is lowered to a certain value or less. As a result, water vapor contained in the combustion gas is liquefied and drainage is generated. The generated drain flows into the neutralization device 6 through the storage case 7, neutralized, and then discharged to the outside.
The neutralization device 6 is connected to a first drain pipe 13 (pipe) and a second drain pipe 14 (pipe) made of stainless steel. It becomes the structure which can be discharged into.

  Here, paying attention to the secondary heat exchanger 5, as shown in FIGS. 1 and 2, a drain pipe 11 for draining water from the secondary heat exchanger 5 at the time of maintenance or the like is connected. The drain pipe 11 is made of copper, and is connected to an internal / external communication member 16 attached in the vicinity of the lower end of the internal side wall 2b of the housing 2. Further, the first drain pipe 13 and the second drain pipe 14 connected to the neutralizer 6 are also connected to the inner / outer communication member 16. That is, the drain pipe 11, the first drain pipe 13, and the second drain pipe 14 are continuous with the outside via the inner / outer communication member 16.

Here, the internal / external communication member 16, which is a characteristic component of the present invention, will be described.
As shown in FIG. 3, the inner / outer communication member 16 is formed by three pipe end members 18 and one connecting member 19. As shown in FIG. 4, the three pipe end members 18 are separate and independent members, and are fitted into the connecting member 19 to be bound together. That is, the three pipe end members 18 are attached to the one connecting member 19 so as to be integrated into the inner and outer communication member 16.

First, the tube end member 18 will be described.
The tube end member 18 is formed by processing a synthetic resin such as polyethylene or polypropylene by an appropriate molding means such as injection molding. As shown in FIGS. 5 and 6, the tube end member 18 has a substantially cylindrical outer shape and is formed from a plurality of portions having different outer diameters. That is, the outer peripheral surface of the tube end member 18 is continuous through a plurality of step portions in the longitudinal direction (X direction in FIGS. 5 and 6). And it has the protrusion 24b (locking convex part) which protrudes largely outside in a part of outer peripheral surface.
The tube end member 18 has a center hole 28 penetrating through the inside thereof, and the center hole 28 extends in the longitudinal direction of the tube end member 18 (X direction in FIGS. 5 and 6). And this center hole 28 is provided with the pipe connection port 26 and the external member connection port 27 which become a boundary with the exterior in the longitudinal direction (X direction in FIG. 5, 6) both ends. That is, the pipe connection port 26 and the external member connection port 27 are openings of the center hole 28, and the center hole 28 extends so as to connect between the pipe connection port 26 and the external member connection port 27.

  Here, paying attention to the outer portion of the pipe end member 18, as shown in FIGS. 5 and 7, from the pipe connection port 26 side toward the external member connection port 27 side, the first flange portion 21, the thick pipe portion 22, The thin tube portion 23, the second flange portion 24, and the exposure port forming portion 25 are integrally formed continuously in this order. Further, from the smaller outer diameter, the narrow tube portion 23, the large tube portion 22, the first flange portion 21, the exposure port forming portion 25, and the second flange portion 24 are formed. That is, the thin tube portion 23 is the smallest and the second flange portion 24 is the largest. The first flange portion 21 and the exposure port forming portion 25 have substantially the same outer diameter.

  The first flange portion 21 is an annular flange located at one end portion in the longitudinal direction (X direction in FIGS. 5 and 7) of the tube end member 18, and extends in the circumferential direction of the tube end member 18 and has an outer periphery. Projects outward from the surface. At this time, the protruding direction is a direction orthogonal to the outer peripheral surface. Further, the end of the first flange portion 21 in the width direction (X direction in FIGS. 5 and 7) on the side close to the pipe connection port 26 has an outer diameter toward the distal end side of the end portion. A taper portion 21a having a gradually narrowing diameter is formed. Furthermore, the other end portion of the first flange portion 21 in the width direction (X direction in FIGS. 5 and 7), that is, the end portion where the tapered portion 21 a is not formed is the thick tube portion 22. Is continuous. Here, the first flange portion 21 has an outer diameter larger than that of the thick tube portion 22. Therefore, the first flange portion 21 and the thick tube 22 are continuous with a step.

  The thick tube portion 22 and the thin tube portion 23 are cylindrical portions having different outer diameters. Both the thick tube portion 22 and the thin tube portion 23 extend in the longitudinal direction of the tube end member 18 (X direction in FIGS. 5, 6 and 7), and the positions of the central axes thereof are the same. And the one side edge part in the longitudinal direction (X direction in FIG.5, 6, 7) of the thick tube part 22 and the one side edge part in the longitudinal direction (X direction in FIG.5, 6, 7) of the thin tube part 23 continue. doing. That is, the thick tube portion 2 and the thin tube portion 23 are continuous with the step 22a. Also, the other end of the end portions in the longitudinal direction of the thin tube portion 23 (X direction in FIGS. 5, 6, and 7), that is, the end portion that is not continuous with the thick tube portion 22 is the second flange portion. 24 is continuous. Here, the outer diameter of the thin tube portion 23 is smaller than that of the second flange portion 24. Therefore, the thin tube portion 23 is continuous with the second flange portion 24 with a step. In other words, the narrow tube portion 23 is continuous with the thick tube portion 23 and the second flange portion 24 at both ends in the longitudinal direction (X direction in FIGS. 5, 6, and 7), and is outside the surrounding portions. The diameter is a small part. Further, the narrow tube portion 23 is a portion having the smallest outer diameter on the outer peripheral surface of the tube end member 18, and is positioned at a substantially central portion in the longitudinal direction of the tube end member 18 (X direction in FIGS. 5, 6 and 7). . From this, it can be said that the tube end member 18 has a constriction in the vicinity of the central portion in the longitudinal direction.

The second flange portion 24 is formed by an annular base portion 24a and a protrusion 24b that protrudes outward from the outer peripheral surface of the base portion 24a.
The base portion 24a extends in the circumferential direction of the tube end member 18 and protrudes outward from the outer peripheral surface, and the protruding direction is a direction orthogonal to the outer peripheral surface. Further, the base portion 24 a is a portion having the largest outer diameter on the outer peripheral surface of the pipe end member 18. And this base part 24a has a level | step difference with the thin tube part 23 and the exposure port formation part 25 at the both ends of the thickness direction (X direction in FIG.5, 6 and 7), respectively.
The protrusion 24b is a protrusion having an arch shape in cross section that protrudes in the circumferential direction from the outer peripheral surface of the base portion 24a. That is, the cross-sectional shape of the protrusion 24b is a substantially rectangular shape, and has a semicircular shape in which the tip portion in the protruding direction is rounded in a convex shape. A substantially central portion of the protrusion 24b has a through hole 24c (through the protrusion 24b extending in the direction perpendicular to the protrusion direction of the protrusion 24b, that is, the thickness direction of the protrusion 24b (X direction in FIGS. 5, 6 and 7). (Engagement part) is formed. In addition, the opening shape of this through-hole 24c is circular.

  The exposure port forming portion 25 is a cylindrical portion located at one end portion in the longitudinal direction of the tube end member 18 (X direction in FIGS. 5 and 7) and close to the external member connection port 27. .

  Next, the internal structure of the tube end member 18 will be described. As shown in FIG. 8, a center hole 28 penetrating the central portion in the longitudinal direction (X direction in FIG. 8) and a protrusion 24b of the second flange 24 are formed in the tube end member 18 in the width direction (FIG. 8). A through hole 24c penetrating in the X direction) is formed.

  The center hole 28 is a hole that communicates from the pipe connection port 26 to the external member connection port 27, and the inner peripheral surface thereof is continuous with undulations. That is, the center hole 28 is a long hole extending with the diameter changing, and the pipe insertion part 31 and the communication part 32 having different diameters from the pipe connection port 26 side toward the external member connection port 27 side. The narrow-diameter portion 33 and the external member insertion portion 34 are integrally formed continuously in this order. In addition, these inner diameters are, from the smaller, a narrow diameter portion 33, a communication portion 32, a pipe insertion portion 31, and an external member insertion portion. That is, the narrow diameter portion 33 is the smallest, and the pipe insertion portion 31 and the external member insertion portion 34 are the largest. The pipe insertion portion 31 and the external member insertion portion 34 have substantially the same outer diameter.

  The pipe insertion part 31 is a part located inside the first flange part 21 and the thick pipe part 22, and is connected to an external member connection port from the pipe connection port 26 side at both ends in the longitudinal direction (X direction in FIG. 8). Tapered portions 31a and 31b having inner diameters gradually narrower toward the 27th side are formed.

  The communication part 32 is a part located inside most of the thin tube part 23, and is a long hole part with a circular cross-sectional shape.

  The narrow diameter portion 33 is a portion located inside the narrow tube portion 23. More specifically, it is a portion located inside the end of the narrow tube portion 23 in the longitudinal direction (X direction in FIG. 8) from the end of the external member connection port 27, and is a long hole portion having a circular cross section. . The narrow diameter portion 33 is continuous with the communicating portion 32 and the external member insertion portion 34 at both ends in the longitudinal direction (X direction in FIG. 8).

  The external member insertion portion 34 is a portion located inside the second flange portion 24 and the external member connection port 27. The outer member insertion portion 34 is an end portion in the longitudinal direction (X direction in FIG. 8), and the inner diameter gradually increases from the pipe connection port 26 side toward the external member connection port 27 side at the end portion from the pipe connection port 26. A tapered portion 34a is formed to increase the diameter. The other end portion, that is, the end portion on the external member connection port 27 side is formed with a female screw portion 34b having a thread formed on the inner peripheral wall thereof.

Next, the connecting member 19 will be described.
The connecting member 19 is formed by performing appropriate processing on a plate material formed of a metal such as iron or an alloy such as stainless steel. The connecting member 19 of this embodiment is formed by performing a bending process after performing a punching process on a plate material. That is, the connecting member 19 is formed by bending a plate material having a specified shape. As shown in FIGS. 9 and 10, the connecting member 19 is bent so as to have a substantially rectangular parallelepiped shape with one open, and flat plates are formed at both ends in the longitudinal direction (Z direction in FIGS. 9 and 10). A shaped mounting plate portion 44 is formed. The mounting plate portion 44 is formed by bending each end portion of the two side surface portions 43 outward in the longitudinal direction (Z direction in FIGS. 9 and 10).

More specifically, the connecting member 19 includes a bottom surface portion 42, a front surface portion 40 raised from the end of the bottom surface portion 42, and a top surface portion 41 that is continuous with the front surface portion 40 and faces the bottom surface portion 42. doing. That is, the top surface portion 41 and the bottom surface portion 42 are continuous with both ends of the front surface portion 40 in the height direction (short direction, Y direction in FIG. 9), and are bent so as to protrude from the front surface portion 40 in the same direction. ing.
Further, the connecting member 19 has two side surface portions 43 that are continuously opposite to both end portions in the width direction of the front surface portion 40 (Z direction in FIG. 9). That is, the two side surface portions 43 are bent so as to protrude from the front surface portion 40 in the same direction.
Here, the top surface portion 41 and the bottom surface portion 42 and the two side surface portions 43 protrude in the same direction, and the angle formed by the front surface portion 40 and the top surface portion 41, the bottom surface portion 42, or the two side surface portions 43 is All are at right angles. Therefore, a portion surrounded by the front surface portion 40, the upper surface portion 41, the bottom surface portion 42, and the two side surface portions 43 has a substantially rectangular parallelepiped shape in which one is opened.

  The connecting member 19 has two attachment plate portions 44 that protrude outward from the side surface portion 43 continuously with the front end portions of the two side surface portions 43 in the protruding direction. The mounting plate portion 44 is formed by bending the tip portion of the side surface portion 43 in the protruding direction outward at a substantially right angle. That is, the angle formed by the mounting plate portion 44 and the side surface portion 43 is substantially a right angle, and the two mounting plate portions 44 protrude in directions away from each other. Further, the mounting plate portion 44 has a flat plate shape, and is continuous in a substantially “L” shape when the side surface portion 43 and the mounting plate portion 44 are viewed from the upper surface portion 41 or the bottom surface portion 42 side. By the way, the length of the protrusion direction (X direction in FIG. 9) of the upper surface part 41 and the side surface part 43 is substantially the same. And it is the surface located in the protrusion direction front-end | tip part of the upper surface part 41, and is the surface where the area of the front end surface 41a which is a surface extended in thickness direction (Y direction in FIG. 10), and the attachment board part 44 has become large. Of the wide surface portions 44a and 44b (see FIGS. 9 and 10), the wide surface portion 44b far from the front surface portion 40 is located on the same plane.

At this time, as shown in FIG. 10, the upper surface portion 41 is longer in the protruding direction (X direction in FIG. 10) than the bottom surface portion 42, and the length of the upper surface portion 41 in the protruding direction. Is approximately twice the length of the bottom surface portion 42 in the protruding direction.
Further, the upper surface portion 41 protrudes from the front surface portion 40 at a position higher than the end of the side surface portion 43 in the height direction (the Y direction upper side in FIGS. 9 and 10), and the lower surface portion 42 is lower than the side surface portion 43 in the height direction. It protrudes from the front surface portion 40 at a position lower than the side (lower side in the Y direction in FIGS. 9 and 10) end portion. In addition, the two side surface portions 43 protrude from the front surface portion 40 at positions outside both ends of the top surface portion 41 and the bottom surface portion 42 in the width direction (Z direction in FIG. 9). For these reasons, the rectangular parallelepiped portion of the connecting member 19 has a shape in which the corner portion is cut out, between the top surface portion 41 and the side surface portion 43 corresponding to the corner portion, and between the bottom surface portion 42 and the side surface. A gap is formed between the portions 43 so as to extend from the protrusion direction tip to the protrusion direction base end.

Here, the bottom surface portion 42 and the front surface portion 40 are formed with notched grooves 46 that extend from the bottom surface portion 42 to the front surface portion 40 and bend substantially continuously at a right angle. Three notch grooves 46 are formed, and are aligned at equal intervals in the longitudinal direction of the connecting member 19 (Z direction in FIGS. 8 and 9).
As shown in FIG. 10, the notch groove 46 is a substantially rectangular notch in the bottom surface portion 42. That is, it is a notch extending from the protrusion direction front end of the bottom surface portion 42 to the protrusion direction base end, and a widening portion 47 that is widened toward the front surface portion 40 is formed in the vicinity of the protrusion direction base end portion. Yes. And it is continuing substantially perpendicular | vertical with the part formed in the front part 40. FIG.
As shown in FIG. 9, the notch groove 46 is a substantially arch-shaped notch in the front surface portion 40. And it extends substantially perpendicularly to the bottom surface portion 42 from the lower end in the height direction (Y direction in FIG. 9) of the front surface portion 40 to a portion slightly above the center in the height direction. That is, from the lower end side in the height direction (the Y direction in FIG. 9) of the front surface portion 40, the width decreases from the bottom surface portion 42 side to the upper surface portion 41 (the width increases toward the lower end), and the rectangular portion 48 The three parts of the shape part and the semicircular part rounded convexly are formed in succession.

  Further, the upper surface portion 41 is formed with a notch 50 having a substantially “concave” -shaped outer shape that is cut out from the front end of the upper surface portion 41 in the protruding direction. That is, the notch 50 is formed by providing a flat plate-like protruding piece 52 (engagement portion) on a part of the surface that forms the locking groove 51 that is a rectangular notch. The protruding piece 52 is a surface that is located at a position closest to the front surface portion 40 among the surfaces that form the locking grooves 51, and is a surface that is formed so as to connect the two surfaces extending in the protruding direction of the upper surface portion 41. Is provided. And it protrudes along the direction substantially perpendicular | vertical to the front-surface part 40 toward the outward from the said surface. At this time, the upper surface and the lower surface of the protruding piece 52 are flush with the upper surface portion 41 (the same).

  Further, the positions of the notch 50 on the upper surface portion 41 and the notch grooves 46 on the bottom surface portion 42 and the front surface portion 40 are substantially the same in the longitudinal direction of the connecting member 19 (X direction in FIG. 9). In addition, the width L2 of the cutout 50 in the upper surface portion 41 (the length in the longitudinal direction of the connecting member 19) L1 and the width L2 of the narrowest portion of the widths of the cutout grooves 46 in the bottom surface portion 42 and the front surface portion 40 Are substantially identical.

  Further, the attachment plate portion 44 is formed with a through hole 54 that penetrates the central portion thereof in the thickness direction (X direction in FIGS. 9 and 10).

  Next, a method of attaching the inner / outer communication member 16 of this embodiment to the inner side wall 2b of the housing 2 will be described with reference mainly to FIGS.

As shown in FIG. 11 (a), various pipes 11, 13, and 14 are inserted from the pipe connection port 26 (see FIG. 5) side into the center holes 28 (see FIG. 5) of the plurality of pipe end members 18. To do. At this time, although not shown in FIG. 11, a groove is formed on the outer peripheral surface of the tip portion of the pipe 11, 13, 14, and sealing performance is achieved by means such as attaching a sealing member such as an O-ring to the groove. May be improved. Further, the pipe end member 18 and the pipe may be firmly attached by using a pipe fixing member used for tightening or preventing the pipe from coming off. Moreover, when attaching such a pipe fixing member, you may make it difficult to remove | deviate using the unevenness | corrugation of the outer peripheral surface of the pipe end member 18 like the 1st flange part 21. FIG. That is, when attaching the pipe to the pipe end member 18, various members and means for improving the sealing performance and the fixing force may be used as appropriate.
At this time, as shown in FIG. 8, a tapered portion 31b having an inner diameter gradually narrowing toward the inside is provided in the vicinity of the pipe connection port 26, so that the pipe end member 18 can be attached to the pipe. It has become easier. That is, when the pipe is inserted into the pipe end member 18, the pipe moves to the correct position along the tapered portion 31b even if the pipe is inserted in a state where the pipe is not accurately aligned, so that the pipe can be easily attached. Furthermore, inside the center hole 28 of the pipe end member 18, as shown in FIG. 8, the inner diameters of the pipe insertion portion 31 and the communication portion 32 are different, and the inner diameter gradually becomes narrower. It continues through the taper part 31a. Therefore, the pipe can be inserted only up to the pipe insertion part 31 or the taper part 31 a of the pipe end member 18, and the pipe is not inserted into the pipe end member 18 too much.

  Then, as shown in FIGS. 11 (b) and 12 (c), the various pipes 11, 13, and 14 to which the pipe end members 18 are individually attached are gathered in one place, and three notches of the connecting member 19 are collected. It is assumed that the narrow tube portion 23 of each tube end member 18 is fitted in the groove 46. Here, the notch groove 46 of the present embodiment is formed with a widened portion 47 on the bottom surface portion 42 that becomes wider as it approaches the front surface portion 40. Further, a widened portion 48 is formed on the front surface portion 40 so as to increase in width as it approaches the bottom surface portion 42. The widened portion 47 of the bottom surface portion 42 and the widened portion 48 of the front surface portion 40 are continuous. That is, the notch groove 46 has the largest width at the corner portion where the front surface portion 40 and the bottom surface portion 42 are continuous, and the width becomes narrower as the distance from the corner portion increases. Therefore, when the tube end member 18 is inserted from the corner portion composed of the front surface portion 40 and the bottom surface portion 42 of the connecting member 19, there is an advantage that the tube end member 18 can be easily inserted due to its large width. Further, since the tube end member 18 inserted from the corner portion is located at a predetermined position along each of the widened portions 47 and 48, positioning is easy.

  12C and 12D, the narrow tube portion 23 of each tube end member 18 is deeply fitted into the notch groove 46 of the connecting member 19, and the upper end portion of the notch groove 46 is also shown. The upper half of the thin tube portion 23 is in contact with the semicircular shape shown in FIG. 9 and its vicinity. At this time, the projections 24b of the pipe end members 18 are fitted into the three notches 50 formed on the upper surface portion 41 of the connecting member 19, and the protruding pieces 52 of the notches 50 are inserted into the through holes 24c. To be in a state where Further, the front end surface 42a (see FIGS. 10 and 12D) is a surface located at the front end portion of the bottom surface portion 42 of the connecting member 19 and extending in the thickness direction (Y direction in FIG. 10). ) In contact with the second flange portion 24 of each pipe end member 18.

  Here, the total length L3 (see FIG. 7) of the thin tube portion 23 and the second flange portion 24 in the longitudinal direction of the tube end member 18 (the X direction in FIG. 7) is the protrusion direction of the upper surface portion 41 of the connecting member 19. It is substantially the same as the length L4 (see FIG. 9). Accordingly, in a state where the pipe end member 18 is attached to the connecting member 19, only the first flange portion 21 and the thick pipe portion 22 of the pipe end member 18 protrude from the notch groove 46 of the front face portion 40 (see FIG. 3). ), The thin tube portion 23 and the second flange portion 24 are positioned between the two opposing side surface portions 43 of the connecting member 19 (see FIG. 12D). At this time, as shown in FIG. 12 (d), the front end surface 41a of the upper surface portion 41 and the surface 24d of the second flange portion 24 of the pipe end member 18 on the exposed port forming portion 25 side (FIGS. 6 and 12). (See (d)) and the wide surface portion 44b of each mounting plate portion 44 are located on the same plane. And the exposure port formation part 25 protrudes in the direction away from the front part 40 (refer FIG.12 (c)) from this same plane.

  At this time, as shown in FIG. 12D, a part of the protrusion 24 b of the pipe end member 18 protrudes from the upper surface portion 41 of the connecting member 19. Specifically, a semi-circular portion that is rounded in a convex shape formed at the front end portion of the protrusion 24 b in the protruding direction protrudes from the upper surface portion 41.

  By the way, the length obtained by combining the length L6 (see FIG. 7) in the longitudinal direction of the second flange portion 24 of the pipe end member 18 with the length L5 (see FIG. 10) in the protruding direction of the bottom surface portion 42 of the connecting member 19 is The length L4 (see FIG. 9) in the protruding direction of the upper surface portion 41 of the connecting member 19 is substantially the same. Further, the length L6 (see FIG. 7) in the longitudinal direction of the second flange portion 24 and the length of the notch 50 (length in the short direction of the connecting member 19) L7 of the connecting member 19 are substantially the same. It has become. Therefore, as shown in FIG. 12D, the second flange portion 24 of the pipe end member 18 is in contact with the notch 50 and the tip surface 42 a of the bottom surface portion 42 at the same time, and the notch groove 46 of the connecting member 19. Between these, the narrow tube portion 23 is located.

  Here, considering the state in which the pipe end member 18 is attached to the connecting member 19, as described above, the second flange portion of the pipe end member 18 is formed in the locking groove 51 of the notch 50 formed in the connecting member 19. The protrusion 24b formed in 24 is inserted (refer FIG.12 (d)). As a result, the tube end member 18 cannot rotate relative to the connecting member 19. In addition, the tube end member 18 cannot move in the left-right direction (X direction in FIG. 3) relative to the connecting member 19.

  Further, as described above, the protruding piece 52 of the notch 50 formed in the connecting member 19 is inserted into the through hole 24c formed in the protrusion 24b of the tube end member 18 (see FIG. 3). Therefore, the tube end member 18 cannot move in the vertical direction (Y direction in FIG. 3) relative to the connecting member 19.

  Furthermore, as described above, the thin tube portion 23 of the tube end member 18 abuts the notch groove 46 formed in the front surface portion 40 of the connecting member 19, so that the tube end member 18 is relative to the connecting member 19. Cannot move upward (upward in the Y direction in FIG. 3). (See FIGS. 3 and 12 (c) and 12 (d))

  Further, as described above, when the second flange portion 24 of the pipe end member 18 is brought into contact with the notch 50 and the front end surface 42a of the bottom face portion 42 simultaneously (see FIG. 12D), the pipe end member 18 is used. Cannot move forward relative to the connecting member 19 (front side in the Z direction in FIG. 3).

  In addition, as shown in FIG. 3, when the pipe end member 18 is attached to the connecting member 19, the pipe end member 18 is relatively rearward with respect to the connecting member 19 (backward in the Z direction in FIG. 3). When trying to move, the step 22 a (see FIG. 6) formed between the thick tube portion 22 and the thin tube portion 23 of the tube end member 18 contacts the front surface portion 40 of the connecting member 19. Therefore, the tube end member 18 cannot move rearward relative to the connecting member 19 (backward in the Z direction in FIG. 3).

  In other words, in a state where the pipe end member 18 is attached to the connecting member 19, the pipe end member 18 is locked in a relative movement in the front / rear, up / down, left / right directions with respect to the connecting member 19 and in a state in which the connecting member 19 cannot rotate. . Therefore, each pipe end member 18 can be firmly attached to the connecting member 19. Further, when removing each pipe end member 18 from the connecting member 19, just by inclining the connecting member 19 at a predetermined angle with respect to each pipe end member 18, the projection 24b and the through hole 24c of the pipe end member 18 are provided. Since the engagement between the locking groove 51 of the connecting member 19 and the protruding piece 52 is released, it can be easily removed.

Here, the internal / external communication member 16 of the present embodiment is used in a state where the pipe end members 18 described above are attached to the connecting member 19 and attached to the inner side wall 2b forming the housing 2 of the heat source unit 1. Can do.
That is, as shown in FIG. 12D and FIG. 13, the connecting member 19 to which each pipe end member 18 is attached is brought into contact with the inner side wall 2b of the housing 2, and the mounting through-hole 65 formed in the inner side wall 2b. And the through hole 54 formed in the attachment plate portion 44 of the connecting member 19 are overlapped. In this state, the attachment through-hole 65 of the internal side wall 2b and the through-hole 54 of the connection member 19 are communicated with each other by a fastening member 64 such as a screw from the outside of the housing 2 to fix the connection member 19 to the internal side wall 2b. .

  At this time, as described above, the front end surface 41a of the upper surface portion 41, the surface 24d (see FIGS. 6 and 12 (d)) of the second flange portion 24 of the tube end member 24 on the exposed port forming portion 25 side, The mounting plate portion 44 is located on the same plane as the wide surface portion 44b (see FIG. 12D), and these are located on the inner side wall 2b of the housing 2 in a state where the connecting member 19 is fixed to the inner side wall 2b. Contact. At this time, the length L8 (see FIG. 7) in the longitudinal direction of the exposure port forming portion 25 of the tube end member 18 is larger than the thickness L9 (see FIG. 13) of the inner side wall 2b of the housing 2. Therefore, the exposed port forming portion 25 of the tube end member 18 is in a state of protruding from the exhaust port through hole 66 of the housing 2 to the outside of the housing 2.

  An external member such as a plug member (not shown) is inserted into the external member connection port 27 (see FIG. 6, FIG. 8, FIG. 12 (d), etc.) of the exposure port forming portion 25 protruding to the outside of the housing 2. An external member can be attached to the tube end member 18 by means such as screwing with the female thread portion 34b (see FIG. 8) of the member insertion portion 34. At that time, as described above, since the tapered portion 34a is formed in the external member insertion portion 34, an external member (not shown) is not excessively inserted.

As described above, the tube end member 18 of the present embodiment is formed of a synthetic resin such as polyethylene or polypropylene, and is formed by appropriate molding means such as injection molding. The connecting member 19 of the present embodiment is formed by punching or bending a plate member formed of a metal such as iron or an alloy such as stainless steel. Therefore, the inner / outer communication member 16 of the present embodiment can be formed at a lower cost than a metal fitting or the like in which a conventional tube end member and a connecting member are integrally formed of brass or the like.
However, the raw material and forming method of the tube end member 18 and the connecting member 19 are not limited to this, and the tube end member 18 may be formed of an appropriate metal or the like, for example. By doing so, the tube end member 18 can be formed more firmly. The raw materials and production methods of the pipe end member 18 and the connecting member 19 of the present invention may be changed as appropriate.

  Although omitted for the convenience of drawing, the connecting member 19 of the above-described embodiment is a chamfered portion by cutting off corner portions of appropriate portions such as the top surface portion 41, the bottom surface portion 42, and the two mounting plate portions 44. It's okay.

  In addition, although the description is omitted in the above-described embodiment, the step 22a (see FIG. 6) may be tapered. That is, it is good also as a structure that the edge part from the thin tube part 23 of the thick tube part 22 of the pipe end member 18 becomes a narrow diameter as the thin tube part 23 is approached. When the step 22 a formed between the thick tube portion 22 and the thin tube portion 23 is tapered, the notch of the connecting member 19 inclined with respect to the tube end member 18 when the connecting member 19 is attached to the tube end member 18. The edge portion of the groove 46 moves relative to the tube end member 18 along the tapered portion. For this reason, the connecting member 19 in an inclined posture is moved closer to the tube end member 18 (see FIG. 12C), and the posture is changed while the tube end member 18 is deeply fitted into the notch groove 46 (see FIG. 12). 12 (d)), the connecting member 19 can be smoothly moved relative to the simple member 18. Similarly, when removing the connecting member 19 from the tube end member 18, the connecting member 19 can be smoothly moved relative to the tube end member 18. Therefore, the connection member 19 can be easily removed.

  In the above-described embodiment, the thin tube portion 23 of the tube end member 18 is cylindrical, but the thin tube portion 23 may be a square pipe. That is, the outer peripheral portion of the cross-sectional shape of the thin tube portion 23 may be a polygonal shape such as a quadrangle, a pentagon, or a hexagon instead of a circle. And you may change suitably the shape of the notch groove 46 of the connection member 19 according to them. For example, if the narrow tube portion 23 is formed in a square pipe shape and the width thereof is set to be substantially the same as the width of the notched groove 46, when the tube end portion 18 is fitted into the connecting member 19, The relative rotation of the tube end member 18 can be prevented.

In the above embodiment, the inner / outer communication member 16 is attached to the inner side wall 2b of the housing 2, but the inner / outer communication member of the present invention is not limited to such a configuration. For example, you may attach to the part which forms a bottom face in the inner wall surface of the housing 2. FIG. That is, it may be attached to any portion as long as it is a surface on the inner side of the housing 2.
In the above-described embodiment, an external member such as an appropriate plug member is attached to a portion (exposed port forming portion 25) of the tube end member 18 that protrudes to the outside of the housing 2; The member is not limited to such a configuration. A configuration in which the shape of the tube end member 18 is appropriately changed, and liquid or gas such as water and drain flowing in various pipes or gas is directly discharged from the tube end member 18 to the outside of the housing 2 may be employed. That is, the tube end member 18 itself may form a discharge port and a supply port.

  In the above-described embodiment, the second flange portion 24 is formed in the pipe end member 18, and the locking groove 51 is formed in the connecting member 19. And it was set as the structure which prevents the relative rotation with respect to the connection member 19 of the pipe end member 18 by making the protrusion 24b and the locking groove 51 of a 2nd flange part into a locking part. However, the locking portion used in the internal / external communication member of the present invention is not limited to this. For example, when the connecting member 19 is formed to be large and the outer shape of the second flange portion 24 is a quadrangular prism, and the pipe end member 18 rotates relative to the connecting member 19, the second flange portion 24 is connected to the connecting member 19. It is good also as a structure contact | abutted to the bottom face part 42. FIG. In other words, the locking portion only needs to be formed on either the tube end member 18 or the connecting member 19, and it is sufficient that the tube end member 18 can be made relatively non-rotatable with respect to the connecting member 19.

  Furthermore, in the above-described embodiment, the projection 24b is formed on the pipe end member 18 and the locking groove 51 is formed on the connecting member 19, but the locking portion used in the internal / external communication member of the present invention is like this. It is not limited to a simple configuration. For example, a configuration in which a locking groove is formed in the tube end member 18 and a locking projection is formed in the connecting member 19 may be employed. That is, the locking projections and the locking grooves constituting the locking portion may be formed on either the tube end member 18 or the connecting member 19.

In the above-described embodiment, the plurality of pipe end members 18 are gathered through the connecting member 19. Next, an embodiment related to the present invention will be described. In the following embodiment, the engaging means for fixing the relative positions to each other are formed on the tube end member and assembled .

  For example, as shown in FIG. 14A, protrusions 101a and 101b protruding in the circumferential direction are formed on the second flange portion 101 of the pipe end member 100, and the pipe end member 100 is formed on each of the protrusions 101a and 101b. A pin-like protrusion 101c and a through hole 101d extending in the longitudinal direction may be formed. Then, as shown in FIG. 14B, the plurality of tube end members 100 are integrated together by engaging the pin-like protrusions 101c between the plurality of tube end members 100 and the through holes 101d. Also good.

  Further, as shown in FIG. 15A, hook-shaped members 103 a and 103 b that protrude in the circumferential direction and bend in a substantially “J” shape may be formed on the second flange portion 103 of the pipe end member 102. . Then, as shown in FIG. 15B, the plurality of tube end members 102 may be integrated together by engaging the flanged members 103a and 103b between the plurality of tube end members 102.

  Furthermore, as shown in FIG. 16A, projections 105a and 105b projecting in the circumferential direction are formed on the second flange portion 105 of the pipe end member 104, and the pipe end member 105 is formed on each of the projections 105a and 105b. A through hole 105c extending in the longitudinal direction may be formed. Then, as shown in FIG. 16 (b), the respective through holes 105 c are overlapped between the plurality of tube end members 104, and the plurality of tube end members 104 are integrated together by fastening members 106 such as screws and nails. May be. At this time, the plurality of tube end members 104 may be attached to the housing 2 of the heat source unit 1 with the fastening members 106.

  As described above, when the engaging means is formed on each tube end member of the inner and outer communication members, the tube end member alone can be integrated together. However, a configuration in which a connecting member is further attached to these pipe end members may be employed. If it does in this way, a pipe end member can be concentrated more firmly.

  Further, the shape of the inner and outer communication members of the present invention may be changed as appropriate. That is, as shown in FIG. 17, the outer diameter of the second flange portion 108 of the tube end member 107 may be a quadrangular prism shape. When such a pipe end member 107 is used, a housing of the heat source machine 1 is used by using a substantially square annular connecting member (not shown) or the like in which a fixing means to the inner side wall 2b of the housing 2 is formed on the outer peripheral portion thereof. 2 can be attached. Moreover, you may change a shape suitably also about parts other than the 2nd flange part 24 of the pipe end member 18, similarly to this. In addition, the pipe connection port 26 and the external member connection port 27 of the pipe end member 18 may be appropriately changed according to the shapes of various pipes and plug members to be connected. For example, the opening shape may be a polygonal shape such as a quadrangle, a pentagon, or a hexagon. That is, various pipes can be attached to the pipe end member as long as they can be integrated together.

1 Heat source machine 2 Housing 2b Internal side wall 11 Drain pipe (pipe)
13 First drain pipe (pipe)
14 Second drain pipe (pipe)
16 Inner / outer communication member 18 Pipe end member 19 Connection member 24b Protrusion (locking projection)
24c Through hole (engagement part)
51 Locking groove 52 Projection piece (engagement part)

Claims (2)

It is an internal / external communication member that is attached to the inner wall surface of a housing with a built-in pipe,
The pipe in the enclosure is opened to the outside, and has a plurality of separate and independent pipe end members. Each pipe end member can be connected to the pipe in the enclosure, and each pipe end member is integrated. In the internal and external communication members that can be gathered together ,
It has a connecting member to which a plurality of pipe end members can be attached, and the plurality of pipe end members can be integrally coupled via the connecting member,
A locking portion for locking the tube end member with respect to the connecting member so as not to rotate; the locking portion is formed on at least one of the connecting member and the tube end member;
The locking portion is formed by a locking projection formed on one of the tube end member and the connecting member and a locking groove formed on the other, and the locking projection The engaging groove is formed with a pair of engaging portions separately from the engaging groove and the engaging groove, and the engaging protrusion is inserted into the engaging groove. The internal / external communication member is characterized in that the engaging portion is engageable in a state where the pipe end member cannot move in the vertical direction with respect to the connecting member.   A heat source machine that burns fuel supplied from the outside and supplies heat via hot water, comprising at least one of a water supply system, a drainage system, and a fuel supply system. A heat source machine characterized by that.

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