JP2023042209A - Ceiling-suspended air conditioning unit, construction method for ceiling-suspended air conditioner, pipe joint, and jig for pipe joint - Google Patents

Abstract

To provide a ceiling-suspended air conditioning unit capable of attaching a pipe without a tool, and capable of minimizing erroneous attachment/detachment, a construction method for a ceiling-suspended air conditioner, a pipe joint, and a jig for a pipe joint.SOLUTION: A ceiling-suspended air conditioning unit comprises: a ceiling-suspended air conditioner body; an accessory component connected to the air conditioner body; a ceiling suspension frame that integrally holds the air conditioner body and the accessory component. The air conditioner body has a pipe joint that can be engaged with a pipe without a tool and can be disengaged with a jig.SELECTED DRAWING: Figure 12

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-suspended air conditioning unit, a method for installing a ceiling-suspended air conditioner, a pipe joint, and a jig for the pipe joint.

In recent years, various techniques have been proposed for facilitating the installation of air conditioners to be installed in ceiling spaces (see Patent Documents 1 and 2, for example).

Japanese Patent No. 5208841 JP 2019-207092 A JP 2019-207095 A

When installing an air conditioner in the ceiling space, a scaffold for work is prepared using a lifter for working at height, and the work is carried out while riding on the scaffold. Also, in the case of a concealed type air conditioner, it is necessary to fit it in a narrow space above the ceiling. Therefore, it is preferable that the air conditioner installed in the ceiling space is easy to install. Therefore, it is preferable from the viewpoint of construction to use one-touch joints that can be connected without tools, for example, for piping that is connected to an air conditioner. However, since there are cases where various types of equipment other than air conditioners are installed in the ceiling space, during the installation and maintenance work for these various types of equipment, workers may touch the joints with tools or There is a possibility that the joint may be removed by mistake.

The present invention has been made in view of the above problems, and a ceiling suspended air conditioning unit that can be installed without tools while suppressing erroneous attachment and detachment as much as possible, a ceiling suspended air conditioner construction method, a pipe An object of the present invention is to provide a joint and a jig for a pipe joint.

In order to solve the above problems, the present invention employs a pipe joint that can be engaged with a pipe without a tool and that can be disengaged with a jig.

More specifically, the present invention relates to a ceiling-mounted air conditioning unit, which includes a ceiling-mounted air conditioner main body, accessory parts connected to the air conditioner main body, and a ceiling-mounted air conditioner unit that integrally holds the air conditioner main body and the accessory parts. and the air conditioner main body has a pipe joint that can be engaged with the pipe without a tool and can be disengaged with a jig.

In the above-described ceiling-suspended air conditioning unit, the pipe joint that engages the pipe can be engaged without a tool, and the engaged state cannot be released without using a jig. Therefore, according to this, it is possible to suppress contact of tools and erroneous attachment/detachment due to operator's erroneous work as much as possible.

Note that the jig may be a pair of members capable of sandwiching the pipe joint. According to this, it is possible to perform the operation of releasing the engaged state by pinching the pipe joint.

The present invention can also be viewed from a method aspect. The present invention provides, for example, a method for installing a ceiling-mounted air conditioning unit that can be installed in a building at a construction site, comprising an assembly work process for assembling and integrating the ceiling-mounted air conditioning unit outside the construction site, and a ceiling-mounted air conditioning unit assembly process. to the construction site, and an installation process of arranging the suspended air conditioning unit transported to the construction site at a predetermined location in the building and engaging the pipe with the pipe joint while preparing a jig. It may be a construction method for a ceiling-suspended air conditioner.

Moreover, the method for installing a ceiling-suspended air conditioner may further include a release step of releasing the engagement of the pipe engaged with the pipe joint with a jig.

The present invention also provides a pipe joint comprising a female joint and a male joint to be inserted into the female joint, wherein the male joint comprises a cylindrical male joint main body having therein a flow path through which fluid passes; and an engagement groove formed around the outer peripheral surface of the male joint body. The female joint includes a cylindrical female joint body into which the male joint body is inserted, An engaging member for engagement arranged along the circumferential direction on the surface, and an engaging member arranged inside the female joint main body so as to be movable in the central axis direction of the female joint main body, and the male joint main body is inserted into the female joint main body. a fixing member for fixing the engaging member to the engaging groove portion in the state of engagement; and an elastic body for pressing the fixing member in the fixing direction side of the center axis direction where the fixing member is to be in a state of fixing the engaging member to the engaging groove portion. , and the female joint body has a gap into which a jig for pressing the fixing member in the release direction opposite to the fixing direction can be inserted. It may be a pipe joint formed between a joint body and a female joint body.

In this case, the male joint has a first indication on the outer peripheral surface of the male joint main body that is exposed even when the male joint is completely engaged with the female joint, and a female indication when the male joint is completely engaged with the female joint. and a second display that is hidden by the joint and is exposed in an unengaged state.

Further, the present invention is a jig for a pipe joint that includes a female joint and a male joint that is inserted into the female joint, wherein the male joint is a cylindrical male joint having a flow path inside for fluid to pass through. The female joint has a joint body and an engagement groove formed so as to surround the outer peripheral surface of the male joint body. An engaging member for engagement arranged along the circumferential direction on the inner peripheral surface of the main body; and a fixing member that fixes the engaging member to the engaging groove when the fixing member is inserted into the engaging groove, and presses the fixing member in the fixing direction side in which the fixing member fixes the engaging member to the engaging groove in the central axis direction. The female joint body has a gap through which a jig for pressing the fixing member in the release direction opposite to the fixing direction can be inserted. The jig is formed between the male joint main body and the female joint main body in the folded state, and the jig includes an annular portion that can be inserted into the gap formed between the male and female joint main bodies, and an outer peripheral side of the annular portion. and a grip part integrally formed with the annular part, and a hinged opening and closing part capable of opening and closing the integrated annular part and the grip part in a direction in which the ring of the annular part opens. may be a jig.

With the ceiling-suspended air-conditioning unit, the ceiling-suspended air-conditioner construction method, the pipe joint, and the jig for the pipe joint, it is possible to install the pipes without using any tools, while at the same time suppressing erroneous attachment/detachment as much as possible. .

FIG. 1 is a diagram showing a state in which a ceiling suspended air conditioning unit is viewed obliquely from above. FIG. 2 is a diagram showing a state in which the ceiling suspended air conditioning unit is viewed from the side. FIG. 3 is a diagram showing a method of mounting a ceiling suspended air conditioning unit on a vehicle. FIG. 4 is a diagram showing an example of a ceiling-suspended air-conditioning unit that is laid on its side on a loading platform of a vehicle. FIG. 5 is a diagram showing a ceiling suspended air conditioning unit placed on a truck. FIG. 6 is a diagram explaining how to attach the ceiling suspended air conditioning unit. FIG. 7 is a diagram showing the details of the ceiling suspended air conditioning unit. FIG. 8 is a diagram showing how pipes are connected. FIG. 9 is a diagram showing how the ducts are connected. FIG. 10 is a diagram showing how the coupler is attached. FIG. 11 is a first diagram showing how the coupler is removed. FIG. 12 is a second diagram showing how the coupler is removed.

Embodiments of the present invention will be described below. The embodiments shown below are examples of embodiments of the present invention, and the technical scope of the present invention is not limited to the following aspects.

FIG. 1 is a diagram showing a state in which the ceiling suspended air conditioning unit 1 is viewed obliquely from above. FIG. 2 is a diagram showing a state in which the ceiling suspended air conditioning unit 1 is viewed from the side. FIG. 1 shows a state in which the suspended air conditioning unit 1 is suspended from the ceiling by suspension bolts K. As shown in FIG. For convenience of explanation, in this embodiment, the Z-axis direction in FIGS. Defined as the horizontal direction of unit 1. Suspension bolts K for suspending the ceiling-suspended air conditioning unit 1 from the ceiling of a building are usually provided with anti-vibration F as shown in FIG. It is not limited to any form. The anti-vibration provided on the anti-vibration F may, for example, have a cross-type configuration that diagonally intersects when viewed from above. For example, when the ceiling-mounted air-conditioning unit 1 is directly attached to the ceiling, or when the hanging bolts K for hanging the ceiling-mounted air-conditioning unit 1 are extremely short, metal fittings stronger than the hanging bolts K are used for the anti-vibration. It is omitted if the suspended air conditioning unit 1 is rigidly connected to the ceiling. Further, the steady rest is not limited to the form of being attached to the upper and lower parts of the suspension bolt K. For example, even if the upper end is embedded in the ceiling and the lower end is connected to the ceiling suspended air conditioning unit 1 good.

As shown in FIGS. 1 and 2, the ceiling suspended air conditioning unit 1 is an air conditioning unit in which an air conditioner body 3, a supply air chamber 4, and a return air chamber 5 are assembled to a frame 2 to integrate them. The supply air chamber 4 and the return air chamber 5 are examples of "accessory parts" in the present application. The term "accessory parts" as used in the present application refers to general parts related to air conditioning that are used together with the air conditioner body 3. In addition to the supply air chamber 4 and the return air chamber 5, for example, various chambers, refrigerant pipes, water pipes, etc. , drain pipes, drain pumps, dampers, intake/exhaust grills, filters, and various other air conditioning related parts. The ceiling suspended air conditioning unit 1 is installed in a narrow space between the floor that constitutes the floor surface of the upper floor or roof of the building and the decorative ceiling panel that constitutes the ceiling surface of the floor on which the ceiling suspended air conditioning unit 1 is installed. Installed in the attic space. Therefore, as shown in FIG. 1, the ceiling suspended air-conditioning unit 1 basically has a laterally long external shape in which the horizontal dimension is longer than the vertical dimension.

When the ceiling-mounted air-conditioning unit 1 is installed on the back side of the ceiling panel, the ceiling-mounted air-conditioning unit 1 is hidden. However, the ceiling suspended air conditioning unit 1 is not limited to such a configuration in which it is installed in a concealed state. For example, if a decorative ceiling panel is not installed on the ceiling, the suspended air conditioning unit 1 will be visible to people in the room.

The suspension bolt K may be screwed into a suspension bolt support nut embedded in the floor concrete that constitutes the floor. It may be screwed to various members such as a hanger.

As shown in FIGS. 1 and 2, the ceiling suspended air conditioning unit 1 has a supply air chamber 4 connected to the air outlet side of the air conditioner body 3 and a return air chamber 5 connected to the air intake side of the air conditioner body 3. are doing. Therefore, the ceiling suspended air conditioning unit 1 has the air conditioner main body 3 disposed in the center of the frame 2 and sandwiched between the air supply chamber 4 and the return air chamber 5 . The connecting portion between the air conditioner main body 3 and the supply air chamber 4 and the connecting portion between the return air chamber 5 and the supply air chamber 4 are flexibly connected so that they are relatively movable to some extent. That is, the other opening to be fitted into one of the openings is manufactured to be slightly smaller, and by adopting a form in which the gap between the openings is filled with a sealing material such as a flexible sponge packing for airtightness, there is some relative movement. It has a flexible connection structure that allows

First, the air conditioner body 3 will be described. The air conditioner main body 3 is a package unit containing a coil through which a heat medium for temperature adjustment flows inside a rectangular housing 31 and an electric fan for blowing air. Piping 33 is also provided. Examples of the auxiliary device 32 include a valve for switching the flow path of the heat medium pipe through which the heat medium flows through the coil, and a drain pump for draining a drain pan that receives water condensed in the coil.

The air conditioner main body 3 is supported by attaching a ceiling attachment portion 34 provided on the outer surface of the housing 31 to a suspension metal fitting 26 provided on the frame 2 . Since the air conditioner main body 3 is a ready-made device that is assumed to be used in a suspended state by a suspension metal fitting such as a suspension bolt K provided in a building, the ceiling suspension mounting portion 34 is also a suspension bolt K. It is designed to be attached to a hanging bracket such as Therefore, in the ceiling-suspended air conditioning unit 1 of the present embodiment, the suspension metal fittings 26 provided on the frame 2 are shaped like such suspension metal fittings, so that the air conditioner main body 3 can be suspended within the frame 2. Designed to be lowered. In addition, since the air conditioner body 3 incorporates an electric fan, a vibration isolator 35 is provided on the mounting portion 34 for ceiling suspension, and vibrations transmitted from the air conditioner body 3 to the frame 2 are prevented by the vibration isolator. Cut off at 35 . As a result, generation of abnormal noise or the like due to resonance of the frame 2 due to vibration generated by the air conditioner main body 3 is suppressed as much as possible. Since the anti-vibration rubber 35 is designed to have a permissible vibration isolation direction that allows movement for vibration isolation, when it is transported under a load, it is not in the permissible vibration isolation direction. It is desired that the direction of the load (the direction of gravity) is approximately the same. The means for isolating the vibration of the air conditioner main body 3 is not limited to the mode in which the vibration isolator 35 is interposed between the frame 2 and the air conditioner main body 3 as described above. For example, a spring or rubber may be provided at the connecting portion between the frame 2 and the hanging bolt K. However, in this case, since the frame 2 can move relative to the hanging bolts K, the frame 2 itself does not have earthquake resistance. Therefore, from the viewpoint of ensuring the earthquake resistance of the entire ceiling-suspended air conditioning unit 1, in this embodiment, the connecting portion between the frame 2 and the hanging bolts K is rigidly connected so that the frame 2 itself has an earthquake-resistant structure. In addition, a vibration isolator 35 is interposed between the frame 2 and the air conditioner main body 3 .

Next, the air supply chamber 4 will be explained. The air supply chamber 4 is a chamber for diverting the conditioned air blown out from the air conditioner main body 3 to a plurality of air supply ducts stretched around various parts of the building. Therefore, a plurality of connection openings 42 for connecting air supply ducts are provided in a rectangular housing 41 that forms the internal space of the chamber. 1 and 2, the housing 41 is provided with six connecting openings 42, but the number of connecting openings 42 depends on the size of the housing 41, the diameter of the connecting openings 42, and the like. to be changed accordingly. Also, the air supply chamber 4 is not limited to the form in which the air supply ducts are connected to all the six connection openings 42 . The number of air supply ducts actually connected to the air supply chamber 4 corresponds to the number of air supply ducts provided at the location where the ceiling suspended air conditioning unit 1 is installed. Therefore, if, for example, two air supply ducts are provided at the location where the ceiling-suspended air conditioning unit 1 is installed, four of the six connection openings 42 in the air supply chamber 4 are closed. used as is. Therefore, it is also possible to omit the connection openings 42 whose opening portions are closed in advance, and to manufacture the air supply chamber 4 in which only the required number of connection openings 42 are provided and incorporate it into the ceiling suspended air conditioning unit 1 . However, in this embodiment, in order to improve construction efficiency and shorten the time required to manufacture members, it is proposed to prepare a large number of common ceiling suspended air conditioning units 1 that can be applied to various installation locations. However, the suspended air conditioning unit 1 disclosed in the present application is not limited to such a form that can be commonly applied to various places. The ceiling-suspended air conditioning unit 1 may be provided with an air supply chamber 4 having a number of connection openings 42 corresponding to the installation location.

Next, the return air chamber 5 will be explained. The return air chamber 5 is a chamber for merging the air flowing from a plurality of return air ducts stretched throughout the building. Therefore, the return air chamber 5 is also provided with a plurality of connection openings for connecting the return air ducts, as in the supply air chamber 4 . Like the supply air chamber 4, the return air chamber 5 also adopts a form in which a large number of connection openings are provided so that it can be applied to various installation locations. It may be provided with a return air chamber 5 having a number of connection openings corresponding to the number of openings.

Unlike the air conditioner body 3, the supply air chamber 4 and the return air chamber 5 do not incorporate a drive unit such as an electric fan, and thus basically do not generate vibrations. Therefore, in this embodiment, the air supply chamber 4 and the return air chamber 5 are attached to the frame 2 without a component such as a rubber vibration isolator that cuts off vibration transmission. However, the ceiling suspended air conditioning unit 1 is not limited to such a form. The ceiling suspended air conditioning unit 1 may have, for example, the supply air chamber 4 and the return air chamber 5 attached to the frame 2 via anti-vibration rubber. Further, the ceiling suspended air conditioning unit 1 may have a form in which the supply air chamber 4 and the return air chamber 5 are attached to the frame 2 by members having a suspension structure like the air conditioner main body 3, for example.

In this way, the ceiling suspended air conditioning unit 1 that integrates the air conditioner main body 3, the supply air chamber 4, and the return air chamber 5 is compared to the air conditioner main body 3, the air supply chamber 4, and the return air chamber 5 individually. , naturally heavy. Therefore, weight reduction is required so that it can be lifted by an indoor aerial work platform and attached to the vicinity of the ceiling of a building. Therefore, in the ceiling suspended air-conditioning unit 1 of the present embodiment, the frame 2 is made of an aluminum member. Therefore, even in the portion where the angle members 21 constituting the frame 2 are fastened together, by fastening the rib plates 22 and 23 with bolts, sufficient strength can be exhibited as compared with the case where the angle members 21 are welded together. I have to. Further, in order to strengthen the strength near the ends of the frame 2 , bar screws 25 are provided to fasten the ends of the angle members 21 to each other at portions corresponding to the corners of the frame 2 . In addition, among the fastening portions of the plurality of angle members 21 on the frame 2, one rib is provided for each portion of the portion (the portion denoted by reference numeral 23) where a load is applied in the direction along the plate surface of the rib plate (surface direction). While the plate 23 is provided, two rib plates 22 are provided for each portion (portion 22) where a load is applied in the direction of bending the rib plate. By fastening the angle members 21 in such a manner that the angle member 21 is sandwiched between the two rib plates 22, the rib plate 22 is prevented from being deformed or damaged by the load. For example, as can be seen from FIG. 1, the suspending portion 24 provided on the frame 2 for attaching the suspended air conditioning unit 1 to the suspending bolts K suspends it from the middle of the angle member 21 extending in the lateral direction. Therefore, when the ceiling suspended air conditioning unit 1 is suspended by the suspension bolts K, the entire load of the ceiling suspended air conditioning unit 1 is applied to the ends of the angle members 21 . Therefore, providing two rib plates 22 at such locations is effective in ensuring the strength of the frame 2 .

FIG. 3 is a diagram showing a method of mounting the ceiling suspended air conditioning unit 1 on a vehicle. As described above, the ceiling-suspended air conditioning unit 1 is installed in a narrow space above the ceiling between the floor and the ceiling panel, so the horizontal dimension is longer than the vertical dimension. It has become. The air conditioner main body 3 is suspended from the frame 2 by the hanging metal fittings 26 provided on the frame 2 .
It is suspended inside. Therefore, for example, when transporting the ceiling-mounted air-conditioning unit 1 assembled at a factory to a construction site, normally, as shown in FIG. It will be loaded flat as it is on the loading platform. However, in this case, the upper space of the loading platform of the ceiling suspended air conditioning unit 1 is not effectively utilized, and the ceiling suspended air conditioning unit 1 cannot be transported efficiently. Therefore, for example, as shown in FIG. 3B, it is conceivable to load the suspended air conditioning unit 1 on the carrier of the vehicle V in a sideways state. If the ceiling-suspended air-conditioning unit 1 is laid sideways and loaded on the cargo bed of the ceiling-suspended air-conditioning unit 1, the upper space of the cargo bed of the vehicle V can be effectively utilized.

FIG. 4 is a diagram showing an example of the ceiling suspended air conditioning unit 1 loaded on the bed of the vehicle V in a sideways state. When the ceiling-suspended air conditioning unit 1, whose horizontal dimension (along the XY plane) is longer than its vertical dimension (Z-axis direction), is laid on the loading platform of the vehicle V, the upper space of the loading platform of the vehicle V becomes large. can be effectively utilized. When the ceiling-mounted air-conditioning unit 1 is turned over, for example, as shown in FIG. When the unit 1 is laid on its side, the auxiliary machine 32 and the incidental piping 33 do not interfere with the floor or wall surface of the cargo bed, so that the suspended air conditioning unit 1 can be easily loaded on the cargo bed. In addition, loading and unloading onto the vehicle V is further facilitated by mounting the suspended air-conditioning unit 1 on a carriage as described below and mounting it on the loading platform of the vehicle V. FIG.

FIG. 5 is a diagram showing the ceiling suspended air conditioning unit 1 placed on the truck D. As shown in FIG. The carriage D has four wheels D2 on the lower surface of a flat base D1 on which the suspended air conditioning unit 1 is placed. The carriage D also has four auxiliary rods D3 erected upward from the edge of the pedestal D1. Therefore, the worker who transports the ceiling-hung air-conditioning unit 1 places the ceiling-hung air-conditioning unit 1 on the pedestal D1 of the cart D, and then manually pushes the ceiling-hung air-conditioning unit 1 and the auxiliary rod D3 to roll the wheels D2. can move the suspended air conditioning unit 1 smoothly. Further, since the auxiliary rod D3 is erected so as to surround the ceiling-suspended air-conditioning unit 1, for example, the ceiling-suspended air-conditioning unit 1 mounted on the carrier of the vehicle V while being mounted on the truck D can be Even if the air-conditioning unit 1 is shaken, the ceiling-suspended air-conditioning unit 1 is not displaced on the upper surface of the pedestal D1 and the ceiling-suspended air-conditioning unit 1 does not drop from the carriage D.

In the ceiling suspended air conditioning unit 1 of the present embodiment, various members such as the air supply chamber 4 and the return air chamber 5 are integrated in addition to the air conditioner main body 3, so the vehicle V and the truck D are used. It is easy to move to a new site and install it on the ceiling of a building.

6A and 6B are diagrams explaining a method of attaching the ceiling suspended air conditioning unit 1. FIG. When installing the ceiling-suspended air conditioning unit 1, first, as shown in FIG. prepare. Then, the vehicle for aerial work S is used to approach the ceiling T. Next, as shown in FIG. 6(B), the operator M inserts the lower end of each suspension bolt K into four positioning holes provided in the gauge 7 and temporarily fastens them with nuts or the like. Then, the worker M puts the upper half of the body above the gauge 7 through the manhole 73 of the gauge 7 and attaches the anti-vibration F to the hanging bolt K. When the anti-vibration F is attached to the suspension bolt K, the position of the lower end of the suspension bolt K is fixed by the anti-vibration F, so even if the gauge 7 is removed, the position of the lower end of the suspension bolt K is maintained. After the installation of the steady rest F is completed, the gauge 7 is removed from the suspension bolt K, and the ceiling suspension air conditioning unit 1 is brought closer to the suspension bolt K as shown in FIG. 6(C). Then, the suspended air conditioning unit 1 is attached to the suspension bolt K. This completes the attachment of the suspended air conditioning unit 1 as shown in FIG. 6(D).

When the ceiling suspended air conditioning unit 1 is attached to the suspension bolt K without using the gauge 7, the lower end of the suspension bolt K must be actually attached to the suspension bolt K. It cannot be aligned to the lower portion 24 . Therefore, the anti-vibration F cannot be attached to the suspension bolt K before attaching the ceiling-suspended air conditioning unit 1 to the suspension bolt K. Then, when attaching the anti-vibration F to the suspension bolt K after attaching the ceiling suspended air conditioning unit 1 to the suspension bolt K, as shown in FIG. It is impossible to put down and attach the steady rest F to the suspension bolt K. Therefore, the worker M needs to move the aerial work vehicle S little by little so as to go around the ceiling-suspended air conditioning unit 1 attached to the suspension bolt K while performing the work of attaching the anti-vibration F. For this reason, the work time required for mounting the steady rest F is long. In addition, since it is necessary to attach the ceiling-suspended air conditioning unit 1 to the hanging bolt K whose lower end is not positioned by the gauge 7, the ceiling-suspended air conditioning unit 1 must be attached to the ceiling-suspended air conditioning unit 1 even when the hanging bolt K is attached to the ceiling suspended air conditioning unit 1. Adjustment work such as changing the position of the hanging portion 24 is required after lifting the aerial work vehicle S to the vicinity of the ceiling, and mounting the ceiling-suspended air conditioning unit 1 on the hanging bolt K is not easy.

In this regard, if the mounting method shown in FIG. Both the work of attaching and the work of attaching the anti-vibration F to the suspension bolt K can be performed very easily. Therefore, for example, at a construction site where it is necessary to install a plurality of the same ceiling-mounted air conditioning units 1, it is necessary to attach the anti-vibration F to the suspension bolt K even before the ceiling-mounted air conditioning units 1 arrive at the construction site. can be done in advance. Then, the ceiling suspended air conditioning units 1 can be attached to the hanging bolts K one after another as soon as the production of the ceiling suspended air conditioning units 1 is completed and they arrive at the construction site from the factory. Furthermore, as described above, if the air supply chamber 4 and the like have a configuration that can be commonly applied to various locations, when the ceiling suspended air conditioning units 1 are attached to the suspension bolts K one after another, the mounting location of the ceiling suspended air conditioning unit 1 can be changed. There is no fear of making a mistake.

Details of the suspended air conditioning unit 1 will be described below. FIG. 7 is a diagram showing the details of the ceiling suspended air conditioning unit 1. As shown in FIG. The ceiling suspended air conditioning unit 1 is provided with a duct connecting portion 101 . Further, the frame 2 is provided with an auxiliary frame 103 for supporting the cold/hot water pipe connection portion 102 attached to the air conditioner main body 3 .

The duct connection part 101 hardly protrudes from the outer surface of the air supply chamber 4 . In addition, the cold/hot water pipe connection part 102 is a part for connecting a cold/hot water pipe to be passed through a coil provided inside the air conditioner main body 3, and can be connected with one touch without using pipes, solenoid valves, or tools. It consists of a coupler (pipe joint) for pipe connection. A heat insulating material is appropriately provided in the piping. Since the cold/hot water pipe connection portion 102 is a part that protrudes from the housing of the air conditioner main body 3, when various external forces such as the load of the pipe are applied to the cold/hot water pipe connection portion 102, the cold/hot water pipe connection portion The root portion of 102 may be damaged. Therefore, when such a cold/hot water pipe connection portion 102 is provided in the ceiling suspended air conditioning unit 1 , it is preferable to provide the frame 2 with an auxiliary frame 103 that supports the cold/hot water pipe connection portion 102 . The auxiliary frame 103 is formed of angle members 104 similar to the angle members 21 of the frame 2, bolts, nuts, and various other structural members.

FIG. 8 is a diagram showing how pipes are connected. As described above, the cold/hot water pipe connection portion 102 is provided with a one-touch coupler for pipe connection. Therefore, if the pipe 105 has a coupler (female side) at the end that is compatible with the coupler (male side) provided in the cold/hot water pipe connection portion 102, the pipe 105 can be manually connected to the cold/hot water pipe 105 without using any tools. It can be connected to the water pipe connection 102 . Therefore, it is possible to extremely easily connect the pipe 105 to the ceiling suspended air conditioning unit 1 suspended by the suspension bolts K from the ceiling of the building. Therefore, it is possible to proceed with the work very smoothly even in a high place or in a narrow space.

FIG. 9 is a diagram showing how the ducts are connected. The duct connecting portion 101 is not a cylindrical body protruding from the outer surface of the air supply chamber 4 like the connecting opening portion 42 illustrated in the above embodiment. That is, since the duct connecting portion 101 hardly protrudes from the outer surface of the air supply chamber 4 , a dedicated duct is connected to the duct connecting portion 101 . The duct connecting portion 101 includes an opening 101A forming a passage for ventilation, and a fitting portion 101B and packing 101C forming the edge of the opening 101A. The fitting portion 101B is made of a flexible material that easily engages with the duct 106. As shown in FIG. The packing 101C is made of a flexible resin that exhibits flexibility and airtightness, and protrudes toward the center of the opening from the fitting portion 101B.

The duct 106 is provided with a heat insulating material 106A for insulating the duct and a fitting portion 106B forming the end of the duct. Further, the fitting portion 106B is provided with ribs 106C. The fitting portion 106B is an annular body having an outer diameter substantially equal to that of the opening 101A of the duct connecting portion 101, and can be fitted into the opening 101A. The outer peripheral surface of the fitting portion 106B is raised to engage with the fitting portion 101B. Ribs 106C protruding from the outer peripheral surface of fitting portion 106B bite into flexible fitting portion 101B to firmly fix duct 106 to duct connecting portion 101. As shown in FIG. In addition, since the packing 101C for ensuring airtightness protrudes toward the center of the opening from the fitting portion 101B, the force of the packing 101C coming into close contact with the outer peripheral surface of the fitting portion 106B also causes the duct connection portion 101 to move. The fixed state of the duct 106 connected to is maintained.

Since the air supply chamber 4 is provided with such a duct connecting portion 101, the duct 106 can be connected to the duct connecting portion 101 only by manually pushing the fitting portion 106B into the opening 101A without using any tools. It is possible to connect. Therefore, the duct 106 can be very easily connected to the ceiling suspended air conditioning unit 1 suspended by the suspension bolts K from the ceiling of the building. Therefore, it is possible to proceed with the work very smoothly even in a high place or in a narrow space.

In addition, since the air supply chamber 4 is provided with such a duct connecting portion 101, the ceiling suspended air conditioning unit 1 can be made smaller than when the connecting opening portion 42 is provided. Since the duct connecting portion 101 hardly protrudes from the outer surface of the air supply chamber 4 compared to the connecting opening portion 42, the external size can be reduced.

The coupler used in the cold/hot water pipe connection portion 102 will be described in detail below. FIG. 10 is a diagram showing how the coupler is attached.

As shown in FIG. 10(A), the coupler 50 has a male joint 51 and a female joint 52 . The male joint 51 and the female joint 52 are members provided at one end of the pipe, and the male joint 51 and the female joint 52 are engaged with each other to connect the pipes. The male joint 51 is provided with a blue line 51a, a red line 51b, an engagement groove 51c (which is an example of the "engagement groove" referred to in the present application), and a sleeve 51d. The blue line 51a is a mark provided at a portion that is exposed without being covered by the female joint 52 even when the female joint 52 is properly engaged with the male joint 51 . A red line 51b is a mark provided at a portion that is covered by the female joint 52 when the female joint 52 is properly engaged with the male joint 51. As shown in FIG. Therefore, a worker who connects pipes can confirm whether or not the female joint 52 is correctly engaged with the male joint 51 by the states of the blue line 51a and the red line 51b.

The female joint 52 includes an engaging piece 52a (an example of an "engaging member" in the present application), a locking ring 52b (an example of a "fixing member" in the present application), a seal 52c, and a spring 52d (an example of a "fixing member" in the present application). "
, a spring 52e, a cylindrical portion 52f, and a seal 52g. The engagement piece 52a is a member that engages with the engagement groove 51c. The locking ring 52b is a member that presses the engaging piece 52a engaged with the engaging groove 51c. The seal 52c is an airtight seal that fits tightly against the sleeve 51d. The spring 52d is a spring that presses the locking ring 52b. The spring 52e is a spring that presses the cylindrical portion 52f. The cylindrical portion 52f is a member that moves within the female joint 52 when fitted into the sleeve 51d. The female joint 52G is an airtight seal that closely contacts the cylindrical portion 52f.

When connecting the pipes using the coupler 50, the male joint 51 and the female joint 52 face each other as shown in FIG. 10(A). Then, as shown in FIG. 10B, the sleeve 51d is fitted into the cylinder portion 52f. After fitting the sleeve 51d into the cylindrical portion 52f, the male joint 51 is further pushed toward the female joint 52 as shown in FIG. 10(C). When the male joint 51 is further pushed toward the female joint 52 while the sleeve 51d is fitted in the cylindrical portion 52f, the gap between the sleeve 51d and the cylindrical portion 52f is sealed by the seal 52c. Also, the tip surface of the sleeve 51d abuts on the cylindrical portion 52f.

If the male joint 51 is further pushed toward the female joint 52 after the tip end surface of the sleeve 51d abuts against the tubular portion 52f, the spring 52e is contracted by the pushing force of the sleeve 51d as shown in FIG. 10(D). Then, the cylindrical portion 52f pressed by the spring 52e moves in the direction opposite to the pressing direction of the spring 52e. When the tubular portion 52f moves within the female joint 52, the engagement piece 52a held on the non-engagement side by the tubular portion 52f is released, and the engagement piece 52a fits into the engagement groove 51c. When the engaging piece 52a fits into the engaging groove 51c, the locking ring 52b pressed against the seal 52c is moved by the pressing force to hold the engaging piece 52a fitted into the engaging groove 51c. The engaged state of the male joint 51 and the female joint 52 is maintained by holding the engaging piece 52a in a state of being fitted in the engaging groove 51c. When the male joint 51 and the female joint 52 are correctly engaged, the red line 51b is covered with the female joint 52 and becomes invisible. Therefore, the operator can grasp that the male joint 51 and the female joint 52 are correctly engaged by confirming the state of the blue line 51a and the locking ring 52b.

As described above, the coupler 50 can be engaged without using a tool by pressing the male joint 51 and the female joint 52 facing each other. Next, a method for disengaging the coupler 50 will be described.

FIG. 11 is a first diagram showing how the coupler is removed. FIG. 12 is a second diagram showing how the coupler is removed.

A jig 53 is used to release the engagement state of the coupler 50 . The jig 53 is formed by connecting a pair of semi-annular members obtained by dividing an annular member into two through a hinge. When releasing the engagement state of the coupler 50, as shown in FIG. 11A, two semi-annular jigs 53 are opened at the hinge portion, arranged so as to sandwich the male joint 51, and the hinge is closed. . Then, with the grasping portion 53a firmly gripped by hand, the push-in portion 53b (which is an example of the “annular portion” referred to in the present application) is pushed into the gap between the male joint 51 and the female joint 52 as shown in FIG. 11(B). fit in. When the push-in portion 53b is fitted into the gap between the male joint 51 and the female joint 52, the end surface of the push-in portion 53b comes into contact with the locking ring 52b.

When the jig 53 is further pushed toward the female joint 52 with the end face of the push-in portion 53b in contact with the locking ring 52b, the locking ring 52b pressed by the spring 52d is pushed as shown in FIG. 11(C). moves in the direction opposite to the pressing direction of the spring 52d. When the locking ring 52b moves, the engaging piece 52a held by the locking ring 52b in a state of being fitted in the engaging groove 51c is released.

When the engagement piece 52a is released, the male joint 51 can be pulled out from the female joint 52. As shown in FIG. Therefore, the worker pulls the male joint 51 away from the female joint 52 while pushing the jig 53 toward the female joint 52, so that the male joint 51 is separated from the female joint 52 as shown in FIG. 12(A). start coming off. By further separating the male joint 51 from the female joint 52, the male joint 51 is completely removed from the female joint 52 as shown in FIG. 12(B).

According to the coupler 50, as described above, the operation of engaging the male joint 51 and the female joint 52 can be performed without tools. Also, it is possible to confirm that the male joint 51 and the female joint 52 are properly engaged by the display of the blue line 51a and the red line 51b. The coupler 50 cannot release the engagement state between the male joint 51 and the female joint 52 unless the jig 53 is used. Therefore, the coupler 50 can suppress contact with tools and erroneous attachment/detachment due to operator's erroneous work as much as possible.

The coupler 50 does not require a tool to engage the male joint 51 and the female joint 52, and requires a jig 53 to release the engaged state. is suitable for That is, the ceiling suspended air conditioning unit 1 can be assembled in an extremely short time compared to the case where the air conditioner main body 3, the supply air chamber 4, and the return air chamber 5 are separately brought to the construction site and assembled. Since the work at the construction site can be completed in , the work period at the construction site can be greatly shortened. can be done. Therefore, with the ceiling suspended air conditioning unit 1 using the coupler 50, compared to carrying the air conditioner main body 3, the supply air chamber 4, and the return air chamber 5 separately to the construction site and performing the assembly work, It is possible to shorten the overall man-hours.

K... Suspension bolt T... Ceiling F... Anti-vibration V... Vehicle S... Aerial work vehicle M... Worker D... Truck 1... Ceiling-suspended air conditioning unit 2... Frame 3... Air conditioner Main body 4 Air supply chamber 5 Return air chamber 7 Gauge 21 Angle material 22 Rib plate 23 Rib plate 24 Suspension part 25 Rod screw 26 Suspension metal fitting 31 Housing 32 Auxiliary machine 33 Accessory piping 34 Mounting portion for ceiling suspension 35 Anti-vibration rubber 41 Housing 42 Connecting opening 50 Coupler 51 Male joint 51a Blue line 51b Red line 51c Engaging groove 51d Sleeve 52 Female joint 52a Engaging piece 52b Locking ring 52c Seal 52d Spring 52e Spring 52f Cylinder portion 52g Seal 53 Jig 53a Grasping portion 53b Pushing portion D1 Pedestal D2 Wheel D3 Auxiliary rod 101 Duct connection portion 102 Cold/hot water pipe connection portion 103 Auxiliary frame 104 Angle member 105 Piping 106 Duct 101A Opening 101B Fitting portion 101C Packing 106A Heat insulating material 106B Fitting portion 106C Rib

Claims (7)

a ceiling-suspended air conditioner body;
ancillary parts connected to the air conditioner main body;
a ceiling suspension frame that integrally holds the air conditioner main body and the accessory parts,
The air conditioner main body has a pipe joint that can be engaged with a pipe without a tool and can be disengaged with a jig.
Ceiling air conditioning unit. The jig is a pair of members capable of sandwiching the pipe joint,
The ceiling suspended air conditioning unit according to claim 1. A construction method for a ceiling-suspended air conditioner that can be attached to a building at a construction site, comprising:
an assembling work step of assembling and integrating the ceiling suspended air conditioning unit according to claim 1 or 2 outside the construction site;
a transportation step of transporting the ceiling suspended air conditioning unit to the construction site;
a mounting step of arranging the suspended air conditioning unit transported to the construction site at a predetermined location in the building, and engaging the pipe with the pipe joint in a state where the jig is prepared;
Installation method for ceiling-suspended air conditioners. further comprising a releasing step of releasing the engagement of the pipe engaged with the pipe joint with the jig;
The method for installing a ceiling suspended air conditioner according to claim 3. A pipe joint comprising a female joint and a male joint inserted into the female joint,
The male joint is
a cylindrical male joint body having therein a flow path through which fluid passes;
an engagement groove formed to surround the outer peripheral surface of the male joint main body;
The female joint is
a cylindrical female joint body into which the male joint body is inserted;
an engaging member for engagement arranged along the circumferential direction on the inner peripheral surface of the female joint main body;
The engaging member is arranged inside the female joint main body so as to be movable in the central axis direction of the female joint main body, and the engaging member is fixed to the engaging groove portion when the male joint main body is inserted into the female joint main body. a fixing member for
an elastic body that presses the fixing member in a fixing direction side in the central axis direction in which the fixing member fixes the engaging member to the engaging groove,
The female joint main body has a gap into which a jig for pressing the fixing member in the releasing direction opposite to the fixing direction can be inserted, in a state where the male joint main body is inserted into the female joint main body. formed between the male joint body and the female joint body;
pipe fittings. The male joint has, on the outer peripheral surface of the male joint main body,
a first display object that is exposed even when the male joint is completely engaged with the female joint;
a second indicator that is hidden by the female joint when the male joint is engaged with the female joint and is exposed when the engagement is not completed;
The pipe joint according to claim 5. A jig for a pipe joint comprising a female joint and a male joint to be inserted into the female joint,
The male joint is
a cylindrical male joint body having therein a flow path through which fluid passes;
an engagement groove formed to surround the outer peripheral surface of the male joint main body;
The female joint is
a cylindrical female joint body into which the male joint body is inserted;
an engaging member for engagement arranged along the circumferential direction on the inner peripheral surface of the female joint main body;
The engaging member is arranged inside the female joint main body so as to be movable in the central axis direction of the female joint main body, and the engaging member is fixed to the engaging groove portion when the male joint main body is inserted into the female joint main body. a fixing member for
an elastic body that presses the fixing member in a fixing direction side in the central axis direction in which the fixing member fixes the engaging member to the engaging groove,
The female joint main body has a gap into which a jig for pressing the fixing member in the releasing direction opposite to the fixing direction can be inserted, in a state where the male joint main body is inserted into the female joint main body. formed between the male joint body and the female joint body,
The jig is
an annular portion that can be inserted into the gap formed between the male joint body and the female joint body;
a gripping portion disposed on the outer peripheral side of the annular portion and integrally formed with the annular portion;
an opening and closing part with a hinge capable of opening and closing the integrated annular part and the grip part in a direction in which the ring of the annular part opens;
Jig for pipe fittings.

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