JP2002327415A - Snow-melting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily wash a radiating pipe for a snow-melting device. SOLUTION: Radiating-pipe on-off valves Vs on the distribution sides are installed to connecting sections to a distribution header pipe 2 of each of the radiating pipes 1 while radiating-pipe on-off valves Vr on the collection sides are mounted on connecting sections to a collection header pipe 3 of each of the radiating pipes 1, washing-body conducting ports 5a on the distribution sides to the corresponding radiating pipes 1 and conducting-port on-off valves Va on the distribution side discretely opening and closing these conducting ports 5a are secured near the connecting sections to the distribution header pipe 2 of each of the radiating pipes 1 on the side of the header pipe 2 to the on-off valves Vs on the distribution sides, and washing-body conducting ports 5b on the collection sides to the corresponding radiating pipes 1 and conducting- port on-off valves Vb on the collection sides discretely opening and closing these conducting ports 5b are set up near the connecting sections to the header pipe 3 of each of the radiating pipes 1 on the header pipe 3 to the on-off valves Vr on the collection side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow melting apparatus, and more particularly, to a distribution header pipe to which a heating medium supply pipe is connected and a collective header pipe to which a heating medium discharge pipe is connected, which are juxtaposed to a snow melting target. The present invention relates to a snow melting device in which one ends of a plurality of heat radiating tubes are connected in parallel to a distribution header tube, and the other ends of the heat radiating tubes are connected in parallel to a collective header tube.

[0002]

2. Description of the Related Art Conventionally, in this type of snow melting apparatus, no means has been taken for cleaning the inside of the heat radiating pipe, and after a group of juxtaposed heat radiating pipes is installed in a snow melting target place such as a road, The fact is that the inside of the heat radiating tubes cannot be washed without removing the heat radiating tubes.

[0003]

However, in this type of snow melting apparatus, a plurality of heat radiating pipes are juxtaposed under a road surface or the like, and a heating medium is sent from the distribution header pipe to the heat radiating pipes. Snow melting (including freezing prevention) is performed by heat radiation from the radiator tube. However, the tubing inside of the radiator tube becomes dirty due to the accumulation of scale due to aging, and if this dirt is left untreated, the inside of the radiator tube will become dirty as the dirt progresses. There is a problem that the heat transfer coefficient on the surface is reduced and the heat radiation performance of the heat radiating pipe is reduced, which causes the snow melting ability to be reduced.

[0004] In view of this situation, the main problems of the present invention are:
Another object of the present invention is to make it possible to easily clean the inside of the heat radiation pipes juxtaposed to a snow melting target place such as a road.

[0005]

Means for Solving the Problems [1] The invention according to claim 1 relates to a snow melting apparatus, which is characterized by connecting a distribution header pipe connected to a heating medium supply pipe and a heating medium discharge pipe. In a configuration in which a collective header tube is provided and one ends of a plurality of radiator tubes juxtaposed at a snow melting target location are connected in parallel to the distribution header tube, and the other ends of the radiator tubes are connected in parallel to the collective header tube, A distribution-side radiation pipe opening / closing valve is provided at a connection part of each heat radiation pipe to the distribution header pipe, and a collection-side radiation pipe opening / closing valve is provided at a connection part of each of the radiation pipes to the collection header pipe, and the distribution-side radiation valve is provided. In the vicinity of the connecting portion of each of the heat radiating pipes to the distribution header pipe on the side of the distribution header pipe with respect to the heat radiating pipe opening / closing valve, the distribution side cleaning body conduction port for the corresponding heat radiation pipe, and the cleaning body conduction ports. Individually Providing a conduction port opening / closing valve on the distribution side to be closed, and a corresponding radiator tube near the connecting portion of each of the radiator tubes to the collector header tube on the side of the collector header tube with respect to the radiator tube open / close valve on the collecting side. And a connecting port opening / closing valve on the collecting side for individually opening and closing the cleaning body connecting ports.

That is, according to this configuration, the inside of the heat radiation tube can be cleaned as follows.

[0007] A part of the plurality of radiating pipes juxtaposed at the snow melting target portion is set as a radiating pipe to be cleaned, and a distribution port and a collecting side opening / closing valve corresponding to the radiating pipe to be cleaned are provided; , Open the radiator pipe opening and closing valve on the distribution side and the collecting side,
As for the other heat radiating pipes, the corresponding distribution side and collecting side conduction port on / off valves are closed, and at least one of the distribution side and collecting side radiating pipe on / off valves is closed.

In this state, an appropriate feeding device feeds the cleaning body from one of the distribution body cleaning ports corresponding to the radiation pipes to be cleaned and the collection side cleaning body conduction ports. The radiating pipe to be cleaned is sent into the pipe of the radiating pipe to be cleaned by fluid transport, and the inside of the pipe is moved toward the other cleaning body conduction port, whereby the moving cleaning body scrapes off the dirt on the inner surface of the pipe. Wash the inside of the tube.

[0009] Then, the movable washing body sent out to the other washing body conduction port is collected by a suitable collecting device,
The cleaning of the inside of the radiator pipe to be cleaned is completed, and then the other radiator pipes are sequentially cleaned in the same manner.

[0010] That is, according to the above configuration, the use of a suitable feeder and a recovery device and the opening / closing operation of each on-off valve are only required without removing the heat radiation pipes juxtaposed at the snow melting target place such as the road. With this, it is possible to clean the inside of each of the plurality of heat radiation tubes juxtaposed to the snow melting target location, and
By this washing in the pipe, the heat radiation performance of the heat radiating pipe can be restored, and the high snow melting ability can be exhibited permanently.

[0011] Incidentally, in order to make it possible to clean the inside of a plurality of radiating tubes arranged in parallel, as another method, one of the cleaning body conducting ports provided in each of the distribution header tube and the collecting header tube is used. The cleaning body is fed into the header pipe from the cleaning body conduction port of one header pipe, and the cleaning body is moved through the inside of the header pipe toward the inside of the heat radiation pipe toward the other header pipe, and It is also conceivable to recover the mobile washing body sent out into the pipe from the washing body conducting port of the other header pipe, but in this case, even if the washing body was repeatedly fed, it was sent into the pipe of one header pipe. The washing body passes through only a specific heat dissipation pipe that is easy to pass due to the positional relationship with one washing body conduction port in one of the header pipes among the plurality of heat dissipation pipes. Heat dissipation All to ensure problem is difficult to apply the tube cleaning results of.

In this alternative method, even if the radiating pipes other than the selected radiating pipe to be cleaned are closed by the radiating pipe opening / closing valve so that the cleaning body passes only through the radiating pipe to be cleaned, Since the header tube has an elongated shape, the header tube on the side to which the cleaning body is fed or the side on which the cleaning body is sent out depends on the positional relationship between the radiating pipe to be cleaned and one cleaning body conduction port in each header pipe. There is a problem in that a stagnant portion of the carrier fluid is generated in a part of the header tube, and the cleaning body tends to stagnate in the stagnant portion.

On the other hand, with the above configuration, in addition to closing the radiating pipes other than the radiating pipes to be cleaned with at least one of the radiating pipe opening / closing valves on the distribution side or the collecting side, the cleaning body conduction port on the distribution side. Is provided in the vicinity of the connection portion of each of the heat radiating tubes to the distribution header tube while the side of the distribution header tube (that is, the side opposite to the heat radiating tube) with respect to the heat radiating tube opening / closing valve on the distribution side, and the cleaning body conduction port of the collecting side is provided. Is similarly provided near the connecting portion of each of the radiator tubes to the collective header tube while the collective header on / off valve is located on the side of the collective header tube, and the feeding and removal of the cleaning body correspond to the radiator tube to be cleaned. Since it is performed through the cleaning body conduction port on the distribution side and the collection side,
The washing body can be reliably passed through the inside of the heat radiating pipe to be washed, and the washing body passes only through the specific heat radiating pipe as described above, or stagnates at the stagnant portion in the header pipe. This can be effectively prevented, and in this regard, it is possible to more reliably and smoothly perform the cleaning of the inside of each of the plurality of radiator pipes juxtaposed to the snow melting target location as compared with the above-described alternative method.

[2] The invention according to claim 2 relates to a snow melting apparatus, which is characterized in that a distribution header pipe connected to a heating medium supply pipe and a collective header pipe connected to a heating medium discharge pipe are provided. In a configuration in which one end of a plurality of heat radiating tubes juxtaposed at a snow melting target location is connected in parallel to the distribution header tube, and the other end of the heat radiating tubes is connected in parallel to the collective header tube, A distribution-side radiator pipe opening / closing valve is provided at a connection part to the header pipe, and a collecting-side radiator pipe opening / closing valve is provided at a connection part of each of the radiator pipes to the collective header pipe, and the distribution-side radiator pipe on-off valve is provided. At the side of the distribution header pipe, near the connecting portion of each of the heat radiation pipes to the distribution header pipe, a cleaning body conduction port on the distribution side for the corresponding heat radiation pipe, and a distribution for individually opening and closing the cleaning body conduction ports. Side A vent port is provided, and on the other side of the radiating pipe on-off valve opposite to the collecting header pipe, near the connecting portion of each of the radiating pipes to the collecting header pipe, the collecting side for the corresponding radiating pipe. And a collecting-port opening / closing valve on the collecting side for individually opening and closing the cleaning-body conducting ports.

That is, according to this configuration, the inside of the radiator tube can be cleaned as follows.

A part of the plurality of radiating pipes juxtaposed at the snow melting target location is used as a radiating pipe to be cleaned, and a distribution port and a collecting side opening / closing valve corresponding to the radiating pipe to be cleaned, and Opening the radiating pipe opening / closing valve on the distribution side, closing the radiating pipe opening / closing valve on the collective side with respect to the radiating pipe to be cleaned, and closing the corresponding radiating pipe opening / closing valve on the distribution side for other radiating pipes, at least Close the radiating pipe on-off valve on the distribution side or at least close the conduction port on-off valve and the radiating pipe on-off valve on the collecting side.

In this state, similarly to the first aspect of the present invention, one of the cleaning body conduction port on the distribution side and the cleaning body conduction port on the collection side corresponding to the heat radiation pipe to be cleaned is cleaned. The cleaning body is fed from the body passage through the pipe of the radiating pipe to be cleaned by fluid transport using an appropriate feeding device, and the inside of the pipe is moved toward the other cleaning body conduction port, whereby the inner surface of the pipe is moved by the movable cleaning body. The inside of the heat radiating pipe to be cleaned is cleaned by scraping off the dirt.

Then, the movable washing body sent to the other washing body conduction port is collected by a suitable collecting device,
The cleaning of the inside of the radiator pipe to be cleaned is completed, and then the other radiator pipes are sequentially cleaned in the same manner.

Therefore, according to the above structure, claim 1
Similar to the invention according to the above, the snow melting target point can be obtained only by using an appropriate feeder and a collecting device and opening and closing each on-off valve without removing a radiator pipe juxtaposed to a snow melting target point such as a road. The inside of each of the plurality of heat radiating tubes arranged side by side can be cleaned, and the heat radiating performance of the heat radiating tubes can be recovered by the cleaning in the tubes, so that the high snow melting ability can be exhibited permanently.

Further, with the above configuration, in addition to closing the radiating pipes other than the radiating pipes to be cleaned with at least the radiating pipe opening / closing valve on the distribution side or at least the conduction port opening / closing valve and the radiating pipe opening / closing valve on the collecting side, The distribution-side cleaning body conduction port is provided near the connection portion of each of the radiation pipes to the distribution header pipe while the distribution-side radiation pipe opening / closing valve is on the distribution header pipe side, and the collection-side cleaning body conduction port is connected to the collection side. The radiating pipe on the collecting side for the radiating pipe to be cleaned is provided on the side opposite to the collecting header pipe with respect to the radiating pipe opening / closing valve (that is, on the side of the radiating pipe) near the connecting portion of each radiating pipe to the collecting header pipe. When the on-off valve is closed, the cleaning body is sent and taken out through the cleaning body conduction ports on the distribution side and the collection side corresponding to the radiator pipe to be cleaned. It can be passed through, in this respect,
Similarly to the invention according to claim 1, the cleaning system can be effectively prevented from passing only inside the specific heat radiating tube or from stagnating in a stagnant portion in the header tube. As compared with the above, it is possible to more reliably and smoothly perform the cleaning of the inside of each of the plurality of heat radiating tubes arranged in parallel at the snow melting target location.

[3] The invention according to claim 3 relates to a snow melting apparatus, which is characterized in that a distribution header pipe connected to a heating medium supply pipe and a collective header pipe connected to a heating medium discharge pipe are provided. In a configuration in which one end of a plurality of heat radiating tubes juxtaposed at a snow melting target location is connected in parallel to the distribution header tube, and the other end of the heat radiating tubes is connected in parallel to the collective header tube, A distribution-side radiator pipe opening / closing valve is provided at a connection part to the header pipe, and a collecting-side radiator pipe opening / closing valve is provided at a connection part of each of the radiator pipes to the collective header pipe, and the distribution-side radiator pipe on-off valve is provided. On the side opposite to the distribution header pipes, near the connecting portion of each of the radiation pipes to the distribution header pipes, the distribution body cleaning ports for the corresponding radiation pipes, and the cleaning body conduction ports are individually opened and closed. Minutes A connection port for the corresponding radiator tube on the side of the collective header tube on the side of the collective header tube with respect to the radiator tube open / close valve on the collective side; And a collecting-port opening / closing valve on the collecting side for individually opening and closing the cleaning-body conducting ports.

That is, according to this configuration, the inside of the radiator tube can be cleaned as follows.

Some of the plurality of radiating pipes juxtaposed at the snow melting target location are used as the radiating pipes to be cleaned, and the distribution-side and collecting-side opening / closing valves corresponding to the radiating pipes to be cleaned; and Opening the radiating pipe opening / closing valve on the collecting side, closing the radiating pipe opening / closing valve on the distribution side with respect to the radiating pipe to be cleaned, and closing the corresponding convection opening / closing valve on the collecting side for other radiating pipes, at least The radiator pipe on-off valve on the collecting side is closed or at least the conduction port on-off valve and the radiator pipe on-off valve on the distribution side are closed.

In this state, as in the first and second aspects of the present invention, one of the distribution-side cleaning body conduction port and the collection-side cleaning body conduction port corresponding to the radiation pipe to be cleaned is provided. The cleaning body is fed into the pipe of the radiating pipe to be cleaned from the cleaning body conduction port by fluid conveyance using an appropriate feeding device, and is moved toward the other cleaning body conduction port through the pipe. The inside of the heat radiating pipe to be cleaned is cleaned in a form in which dirt on the inner surface of the pipe is scraped.

Then, the movable washing body sent out to the other washing body conduction port is collected by a suitable collecting device,
The cleaning of the inside of the radiator pipe to be cleaned is completed, and then the other radiator pipes are sequentially cleaned in the same manner.

Therefore, according to the above-described configuration, similar to the first and second aspects of the present invention, a proper feed device and a recovery device can be provided without removing the heat radiation pipes juxtaposed at the snow melting target place such as the road. Just by using and opening / closing each opening / closing valve, the inside of each of a plurality of radiator pipes juxtaposed to the snow melting target can be washed, and the heat dissipation performance of the radiator pipes can be recovered by this washing inside the pipes. Snow melting ability can be exhibited permanently.

In addition, with the above configuration, in addition to closing the radiating pipes other than the radiating pipes to be cleaned by at least the radiating pipe opening / closing valve on the collecting side or at least the conduction port opening / closing valve on the distribution side and the radiating pipe opening / closing valve, A distribution body cleaning port is provided on the side opposite to the distribution header pipe with respect to the distribution side radiator pipe opening / closing valve in the vicinity of a connection portion of each radiator pipe to the distribution header pipe, and a collection side cleaning body conduction port is provided. In the state where the radiating pipe on / off valve on the distribution side for the radiating pipe to be cleaned is closed, provided near the connecting portion of each radiating pipe to the collecting header pipe while being on the side of the collecting header pipe with respect to the radiating pipe opening / closing valve on the collecting side, Since the cleaning body is sent and taken out through the cleaning body conduction ports on the distribution side and the collection side corresponding to the radiator pipe to be cleaned, the cleaning body can be reliably passed through the pipe of the radiator pipe to be cleaned. In this respect, it is possible to effectively prevent the cleaning body from passing only through the specific heat radiating pipe and stagnation at the stagnant portion in the header pipe as in the first and second aspects of the present invention. As a result, the inside of each of the plurality of radiating tubes arranged in parallel with the snow melting target can be more reliably and smoothly cleaned as compared with the above-described alternative method.

[4] The invention according to claim 4 is the invention according to claims 1 to
3. A preferred embodiment for carrying out the invention according to any one of (3) and (3), characterized by a distribution side provided on the side of the distribution header pipe with respect to the radiation pipe opening / closing valve on the distribution side. The cleaning body conduction port, or the collection side cleaning body conduction port provided on the collection header tube side with respect to the collection side radiation pipe opening / closing valve, with a radiation pipe corresponding to the cleaning body conduction port. The present invention is characterized in that a cleaning body guide for guiding the movement of the cleaning body in the pipe between the cleaning bodies is provided.

In other words, according to this configuration, the cleaning body conducting port on the distribution side is provided on the side of the distribution header tube (typically, the distribution header tube itself) with respect to the radiator pipe opening / closing valve on the distribution side. The cleaning body conduction ports on the distribution side and the collection side are provided on the side of the collection header pipe (typically, the collection header pipe itself) with respect to the radiator pipe opening / closing valve on the collection side. Of the cleaning body conduction port on the side used for feeding the cleaning body, the cleaning body sent from the cleaning body conduction port is guided more securely and smoothly into the corresponding radiator tube to be cleaned by the cleaning body guide. The cleaning body can be transferred to the cleaning body conduction port on the side used for taking out the cleaning body, and the cleaning body sent out from the radiating pipe to be cleaned is more reliably guided to the corresponding cleaning body conduction port by the guide using the cleaning body guide. And circle Can be transferred to, these things, it is possible to perform heat radiation pipe respective tube cleaning more reliably and smoothly.

[5] The invention according to claim 5 relates to a snow melting apparatus, which is characterized in that a distribution header pipe connected to a heating medium supply pipe and a collective header pipe connected to a heating medium discharge pipe are provided. In a configuration in which one end of a plurality of heat radiating tubes juxtaposed at a snow melting target location is connected in parallel to the distribution header tube, and the other end of the heat radiating tubes is connected in parallel to the collective header tube, A distribution-side radiator pipe opening / closing valve is provided at a connection part to the header pipe, and a collecting-side radiator pipe opening / closing valve is provided at a connection part of each of the radiator pipes to the collective header pipe, and the distribution-side radiator pipe on-off valve is provided. On the side opposite to the distribution header pipes, near the connecting portion of each of the radiation pipes to the distribution header pipes, the distribution body cleaning ports for the corresponding radiation pipes, and the cleaning body conduction ports are individually opened and closed. Minutes A conduction port opening / closing valve on the side is provided, and near the connecting portion of each of the radiating tubes to the collecting header tube on the side opposite to the collecting header tube with respect to the radiating tube opening / closing valve on the collecting side, for the corresponding radiating tube. Cleaning body conduction port on the collecting side,
Another feature is that a collecting port opening / closing valve for individually opening and closing the cleaning body connecting ports is provided.

That is, according to this configuration, the inside of the radiator tube can be cleaned as follows.

A part of the plurality of radiating pipes juxtaposed at the snow melting target portion is set as a radiating pipe to be cleaned, and the distribution port and the collecting side opening / closing valve corresponding to the radiating pipe to be cleaned are opened. At the same time, the radiating pipe opening / closing valves on the distribution side and the collecting side with respect to the radiating pipe to be cleaned are closed.

In this state, as in the first to third aspects of the present invention, one of the distribution body cleaning port and the collection side cleaning body conduction port corresponding to the radiation pipe to be cleaned is provided. The cleaning body is fed into the pipe of the radiating pipe to be cleaned from the cleaning body conduction port by fluid conveyance using an appropriate feeding device, and is moved toward the other cleaning body conduction port through the pipe. The inside of the heat radiating pipe to be cleaned is cleaned in a form in which dirt on the inner surface of the pipe is scraped.

Then, the movable washing body sent out to the other washing body conduction port is collected by a suitable collecting device,
The cleaning of the inside of the radiator pipe to be cleaned is completed, and then the other radiator pipes are sequentially cleaned in the same manner.

Therefore, according to the above structure, claim 1
Similar to the inventions according to the first to third aspects, the melting of snow can be achieved only by using an appropriate feeding device and a collecting device and opening and closing each on-off valve without removing a heat radiation pipe juxtaposed at a snow melting target place such as a road. It is possible to clean the inside of each of the plurality of heat radiating tubes arranged side by side at the target location, and the heat cleaning performance of the heat radiating tubes can be recovered by the cleaning in the tubes, so that the high snow melting ability can be exhibited permanently.

Further, in the above configuration, the distribution port of the cleaning body is arranged on the side opposite to the distribution header pipe (ie, on the side of the radiation pipe) with respect to the distribution pipe. Provided near the connection part to the header pipe, and the cleaning body conduction port on the collecting side is also provided on the opposite side of the collecting header pipe with respect to the radiating pipe opening / closing valve on the collecting side (that is, on the radiating pipe side). Provided in the vicinity of the connection to the collecting header pipe, with the radiating pipe on / off valve on the distribution side and the collecting side for the radiating pipe to be cleaned closed, and send and remove the cleaning body to the radiating pipe corresponding to the radiating pipe to be cleaned. And since the cleaning is performed through the cleaning body conduction port on the collecting side, the cleaning body can be reliably passed through the inside of the radiating pipe to be cleaned, and in this regard, the cleaning body is similar to the invention according to claims 1 to 3. Just inside the specific radiator tube It is possible to effectively prevent such a passage or stagnation in the stagnation portion in the header tube, and compared to the above-described alternative method, cleaning the inside of each of the plurality of heat radiation tubes juxtaposed to the snow melting target location is more efficient. It can be performed reliably and smoothly.

[6] The invention according to claim 6 is based on claims 1 to
5. An embodiment suitable for carrying out the invention according to any one of (5) to (5), characterized by forming an underground pit having a lid near the juxtaposed area of the radiator pipes on the ground surface, The underground pit houses the radiator pipe opening / closing valve and the conduction port opening / closing valve on the distribution side and the collection side.

That is, according to this configuration, the radiator pipe opening / closing valve and the conduit opening / closing valve on the distribution side and the collecting side are accommodated in the underground pit with the lid. , In the vicinity of the snow melting target location) so that the inside of the radiator pipe can be easily cleaned by using the on-off valves, but the on-off valves and the piping before and after the on-off valves are located in the snow melting target locations (for example, roads). ) Can be prevented from becoming an obstacle in normal ground use.

In the embodiment of the present invention, the underground pit serves as both the distribution side and the gathering side, and the dual-purpose underground pit is provided with a radiation pipe opening / closing valve on both the distribution side and the gathering side. In addition, underground pits may be provided separately on the distribution side and the gathering side, and the underground pits may be distributed to the underground pits on the distribution side and the underground pits on the gathering side. The opening / closing valves on the side and the collecting side may be housed separately.

[0040]

DESCRIPTION OF THE PREFERRED EMBODIMENTS [First Embodiment] FIG. 1 shows a snow melting apparatus, 1 is a plurality of meandering radiating pipes juxtaposed at a snow melting target location Y such as a road, and 2 is a connecting pipe 2a for supplying a heating medium W. The distribution header pipes 3 are collective header pipes to which the discharge pipes 3a for the heating medium W are connected. Each of the header pipes 2 and 3 extends in the direction in which the heat radiating pipes 1 are juxtaposed at one side of the snow melting target location Y. It is.

Then, inside the underground pit 4 formed in the vicinity of one side of the snow melting target location Y, one end of each of the heat radiating pipes 1 is arranged with respect to the distribution header pipe 2 in a state of being arranged at a predetermined interval in the header pipe direction. Similarly, the heat radiating tubes 1 are connected in parallel to the collective header tube 3 with the other ends of the heat radiating tubes 1 arranged at predetermined intervals in the header tube direction.

That is, in this snow melting apparatus, the heating medium W supplied from the supply pipe 2a is distributed by the distribution header pipe 2 to the plurality of meandering radiating pipes 1 and passes through the radiating pipes 1. The heat dissipating heat of the heating medium W to the outside of the tube prevents snow melting and freezing at the snow melting target location Y. Then, the heating medium W that has passed through the inside of the heat radiating tubes 1 is transferred to the collecting header tube 3.
And returned to an appropriate heat source device such as a heat pump device or an underground heat exchanger through the discharge tube 3a, and the heating medium W reheated by this heat source device is again returned to each heat radiation tube 1 through the supply tube 2a and the distribution header tube 2. Circulating supply.

As shown in FIGS. 1, 2 and 3, the connecting portions of each of the heat radiating tubes 1 to the distribution header tube 2 and the connecting portions of each of the heat radiating tubes 1 to the collective header tube 3 have a distribution side for opening and closing each heat radiating tube 1 and Radiating pipe opening / closing valves Vs and Vr on the collecting side are provided, and a distribution side for taking in and out a cleaning body S for cleaning the radiating pipe such as a sponge ball into each of the distribution header pipe 2 and the collecting header pipe 3. And cleaning body conduction port 5 on the collecting side
a and 5b are formed so as to face the connection ports of the heat radiation tubes 1 to the header tubes 2 and 3, respectively, and the distribution port and the collection port for individually opening and closing the cleaning body conduction ports 5a and 5b. On-off valves Va and Vb are provided.

In each of the header pipes 2 and 3, a portion where each of the cleaning body conduction ports 5 a and 5 b is formed is provided between the cleaning body conduction ports 5 a and 5 b and the corresponding heat radiation pipe 1. A cleaning body guide 6 (in this example, a guide formed by annularly arranging a plurality of parallel guide tubes 6a) for guiding the movement of the cleaning body S in the pipe is provided.

Radiation pipe opening / closing valve V on each of the distribution side and the collection side
s, Vr and the conduction port on-off valves Va, Vb are housed in the underground pit 4, and normally, all the radiator pipe on-off valves Vs,
Vr is opened, and the underground pit 4 is closed by the ground cover 4a in a state where all the opening / closing valves Va and Vb are closed.

FIG. 4 shows a working mode for cleaning the inside of the heat radiating tube 1. Reference numeral 7 denotes a cleaning device for cleaning the inside of the heat radiating tube 1 by using a cleaning body S. A cleaning mode in which S is circulated and supplied to the heat radiating pipe 1 by fluid transport by the pump 7p (generally, a liquid transport using the same type of liquid as the heating medium W), and a heat radiating pipe by fluid transport without sending out the cleaning body S. The mode can be switched to a recovery mode for recovering the cleaning body S returning from step 1.

As shown in FIG. 4, one of the plurality of radiating tubes 1 is used as a radiating tube to be cleaned, and the radiating tube 1x to be cleaned is used as a cleaning operation procedure using the cleaning device 7. Cleaning port 5 on distribution side and collection side corresponding to
The cleaning body supply / discharge pipes 7a, 7b from the cleaning device 7 are connected to the a, 5b, and the distribution side and collection side conduction port on / off valves Va, Vb corresponding to the radiator pipe 1x to be cleaned, and the distribution side and the distribution side. The radiating pipe opening / closing valves Vs and Vr on the collecting side are opened, and the other radiating pipes 1 are closed with the corresponding on-distribution side and collecting port opening / closing valves Va and Vb, and at least one of the distributing side and the collecting side (desirably). Are closed).

In this state, by operating the cleaning device 7 in the cleaning mode, the distribution side cleaning body conduction port 5a and the collection side cleaning body conduction port 5a corresponding to the radiation pipe 1x to be cleaned are provided.
b and the cleaning body S from one of the cleaning body conducting ports.
Is sent into the pipe of the radiating pipe 1x to be cleaned, and the cleaning body S is taken out from the other radiating pipe of the cleaning body, and the cleaning body S is circulated through the pipe of the radiating pipe 1x to be cleaned.
The inside of the radiating tube 1x to be cleaned is washed in a form in which the inside of the tube is wiped off by the washing body S.

After the cleaning mode operation is continued for an appropriate period of time, the cleaning device 7 is operated in the recovery mode, so that the cleaning body S sent out from the other cleaning body conduction port.
Is collected in the cleaning device 7, and the inside of the radiating tube 1x to be cleaned is completed. Thereafter, the inside of the other radiating tubes 1 is sequentially washed in the same manner.

In the above-described cleaning mode operation, the direction of circulation (ie, the direction of fluid transport) of the cleaning body S with respect to the radiator tube 1x to be cleaned is appropriately switched by operating the switching valve 7v.

[Second Embodiment] FIGS. 5 and 6 show examples in which the equipment positions of the cleaning body conduction ports 5a and 5b and the conduction port opening / closing valves Va and Vb are changed in the snow melting apparatus shown in the first embodiment. In the snow melting apparatus shown in FIGS. 5 and 6, the heat radiation pipes 1 on the side opposite to the distribution header pipe 2 with respect to the distribution heat radiation pipe opening / closing valve Vs are located near the connection portions of the heat radiation pipes 1 to the distribution header pipes 2. Washing body conduction port 5 on the distribution side for radiator tube 1
a, and a distribution-side opening / closing valve Va for individually opening / closing the distribution-side cleaning body conduction port 5a.
At the opposite side of the collective header tube 3 with respect to the collective-side radiator pipe opening / closing valve Vr, at a location near the connecting portion of each of the radiator pipes 1 to the collective header pipe 3, the collective-side cleaning body conduction port for the corresponding radiator pipe 1 is provided. 5b, and a collecting-side opening / closing valve Vb for individually opening and closing the cleaning-body connecting ports 5b on the collecting side.

That is, in this snow melting apparatus, the inside of the radiator tube 1 is cleaned by using the above-described cleaning device 7, as shown in FIG.
As shown in FIG. 5, one of the plurality of radiating tubes 1 is a radiating tube to be cleaned, and the cleaning device conduction ports 5a and 5b on the distribution side and the collecting side of the radiating tube 1x to be cleaned are supplied from the cleaning device 7. While the cleaning body supply / discharge pipes 7a and 7b are connected and the distribution-side and collection-side conduction port opening / closing valves Va and Vb of the radiating pipe 1x to be cleaned are opened, the distribution side to the radiating pipe 1x to be cleaned is opened. And the radiating pipe opening / closing valves Vs, V on the collecting side
r is closed.

In this state, by operating the cleaning device 7 in the cleaning mode, as in the first embodiment, the distribution body cleaning port 5 corresponding to the radiation pipe 1x to be cleaned is provided.
a and the cleaning body conduction port 5b on the collecting side, the cleaning body S is sent into the pipe of the radiating pipe 1x to be cleaned through one of the cleaning body conduction ports, and the cleaning body S is taken out from the other cleaning body conduction port. Then, the cleaning body S is circulated through the inside of the radiating pipe 1x to be cleaned, whereby the inside of the radiating pipe 1x to be cleaned is cleaned by the cleaning body S in such a manner as to wipe off dirt on the inner surface of the pipe.

After the cleaning mode operation is continued for an appropriate period of time, the cleaning device 7 is operated in the recovery mode, so that the cleaning member S sent out from the other cleaning member passage port is operated.
Is collected in the cleaning device 7, and the inside of the radiating tube 1x to be cleaned is completed. Thereafter, the inside of the other radiating tubes 1 is sequentially washed in the same manner.

[Third Embodiment] FIG. 7 shows another example of the snow melting apparatus shown in the first and second embodiments in which the equipment positions of the cleaning body conduction ports 5a and 5b and the conduction port opening / closing valves Va and Vb are changed. In the snow melting apparatus shown in FIG. 7, the distribution body cleaning port 5a is formed in the distribution header tube 2 so as to face the connection port of the heat radiation tube 1 to the distribution header tube 2 similarly to the first embodiment. On the other hand, in the same way as in the second embodiment, the cleaning body conduction port 5b on the collecting side is connected to the collecting header pipe 3 of each of the radiating pipes 1 on the side opposite to the collecting header pipe 3 with respect to the radiating pipe opening / closing valve Vr on the collecting side. In the vicinity of the connection portion, with this configuration, there are provided distribution side and collection side conduction port opening / closing valves Va and Vb for individually opening and closing these distribution side and collection side cleaning body conduction ports 5a and 5b.

Further, each of the cleaning body conducting ports 5a on the distribution side has:
A cleaning body guide 6 is provided for guiding the movement of the cleaning body S in the tube between the corresponding heat radiating pipe 1 and the heat radiation pipe 1.

That is, in this snow melting apparatus, the inside of the radiator tube 1 is cleaned by using the above-described cleaning device 7.
As shown in FIG. 1, one pipe 1x of the plurality of radiator pipes 1 is set as a radiator pipe to be cleaned, and a cleaning device 7 is provided in the cleaning body conduction ports 5a and 5b on the distribution side and the collecting side corresponding to the radiator pipe 1x to be cleaned. And the distribution-side and collecting-side opening / closing valves Va and Vb corresponding to the radiator pipe 1x to be cleaned and the radiator pipe 1 to be cleaned.
While opening the radiator tube opening / closing valve Vs on the distribution side for x,
Radiating pipe opening / closing valve V on the collecting side for the radiating pipe 1x to be cleaned
is closed, and for the other radiator tubes 1, the distribution port and collection side conduction port on / off valves Va and Vb are closed, and at least one (preferably both) of the radiator tube switch valves Vs and Vr on the distribution side or the collection side. Is closed.

In this state, by operating the cleaning device 7 in the cleaning mode, as in the first and second embodiments, the distribution-side cleaning body conduction port 5a corresponding to the radiator tube 1x to be cleaned and the collection side conduction port 5a. The cleaning object S is supplied to the cleaning object S from one of the cleaning object communication ports 5b.
x into the pipe of x and the cleaning body S
The cleaning body S is circulated through the inside of the radiator tube 1x to be cleaned in a form in which the radiating tube 1x is taken out.

After the cleaning mode operation is continued for an appropriate period of time, the cleaning device 7 is operated in the recovery mode, so that the cleaning body S sent out from the other cleaning body passage port.
Is collected in the cleaning device 7, and the inside of the radiating tube 1x to be cleaned is completed. Thereafter, the inside of the other radiating tubes 1 is sequentially washed in the same manner.

It is to be noted that, contrary to the configuration shown in FIG. 7, the cleaning body conducting port 5 b on the collecting side is formed in the collecting header pipe 3 so as to face the connection port of each radiating pipe 1 to the collecting header pipe 3. On the other hand, the cleaning body conducting port 5a on the distribution side is connected to the radiating pipe 1 on the side opposite to the distribution header pipe 2 with respect to the radiating pipe opening / closing valve Vs on the distribution side.
It may be formed in the vicinity of the connecting portion to each distribution header tube 2. In this case, in order to perform cleaning of the inside of the heat radiation tube 1, one tube 1x of the plurality of heat radiation tubes 1 is to be cleaned. As the heat radiating pipes, the cleaning body supply / discharge pipes 7a and 7b from the cleaning device 7 are connected to the cleaning body conducting ports 5a and 5b on the distribution side and the collection side corresponding to the heat radiating pipe 1x to be cleaned, and
While the distribution-side and collection-side conduction-port opening / closing valves Va and Vb corresponding to the radiator tube 1x to be cleaned and the radiator tube opening / closing valve Vr on the collection side for the radiator tube 1x to be cleaned are opened, the cleaning-target radiator tube 1x is opened. The radiating pipe on-off valve Vs on the distribution side with respect to the radiating pipe 1x is closed, and the other radiating pipes 1 are closed with the on-off valves Va, Vb on the distribution side and the collecting side, and at least one of the distributing side and the collecting side (desirably). Are closed), and in this state, the inside of the radiating pipe 1x to be cleaned is cleaned by the cleaning device 7, and
Thereafter, similarly, the inside of the other heat radiation tubes 1 is sequentially washed.

[Other Embodiments] Next, other embodiments of the present invention will be listed.

In the case where the cleaning body conduction port 5a on the distribution side is provided on the side of the distribution header pipe 2 with respect to the distribution side heat radiation pipe opening / closing valve Vs, in the vicinity of the connection portion of each heat radiation pipe 1 to the distribution header pipe 2, The distribution body cleaning port 5a on the distribution side is connected to the distribution header tube 2
Or a radiating pipe opening / closing valve Vs on the distribution side
Any of the configurations formed on each of the heat radiating tubes 1 on the side of the distribution header tube 2 may be adopted. In the case where the cleaning body conduction port 5a on the distribution side is formed on the distribution header tube 2, a specific example thereof is used. The actual formation position is not necessarily limited to the position directly facing the connection port of the corresponding radiator tube 1, but may be the oblique position to the connection port of the corresponding radiator tube 1.

Similarly, the cleaning body conduction port 5b on the collecting side is provided near the connecting portion of each radiating pipe 1 to the collecting header pipe 3 on the side of the collecting header pipe 3 with respect to the radiating pipe opening / closing valve Vr on the collecting side. In such a case, the cleaning body conduction port 5b on the collecting side is formed in the collecting header tube 3, or each of the radiating tubes 1 on the collecting header tube 3 side with respect to the radiating tube opening / closing valve Vr on the collecting side.
In the case where the cleaning body conducting port 5b on the collecting side is formed in the collecting header tube 3, the specific forming position is not necessarily relative to the connection port of the corresponding heat radiating tube 1. The position is not limited to the directly facing position, and may be an oblique position with respect to the connection port of the corresponding heat radiation pipe 1.

The distribution body cleaning port 5a provided on the distribution header pipe 2 side with respect to the distribution side heat radiation pipe opening / closing valve Vs, or the collection header pipe 3 with respect to the collection side heat radiation pipe opening / closing valve Vr.
When the cleaning body guide 6 for guiding the movement of the cleaning body S between the cleaning body conduction port 5b on the collecting side and the corresponding heat radiation pipe 1 is provided, the specific structure of the guide 6 is as follows. Various configurations can be changed without being limited to the structure described in the above embodiment.

The heat radiating pipe 1 is not limited to the meandering one and may be a straight pipe. In the above-described embodiment, the underground pit 4 is made to serve both as the distribution side and the collecting side, and The dual-purpose underground pit 4 accommodates both the radiating pipe opening / closing valves Vs and Vr and the conduction port opening / closing valves Va and Vb on both the distribution side and the collection side, but the underground pit 4 is provided separately on the distribution side and the collection side. ,
With respect to the underground pits on the distribution side and the underground pits on the gathering side, the respective on-off valves Vs, Va, Vr, Vb on the distributing side and the gathering side.
May be stored separately.

In the above-described embodiment, the feeding device for feeding the cleaning body S into the radiator tube 1x to be cleaned and the radiator tube 1 to be cleaned are provided.
Although the example using the cleaning device 7 in which the recovery device for recovering the cleaning body S sent out from the x is used has been described, such a cleaning device is used separately from the feeding device and the recovery device.
Various types of devices can be used to send the cleaning body S to the radiating tube 1x to be cleaned and to recover the cleaning body S that has been sent. Various types of cleaning bodies S are not limited to sponge balls. it can.

Further, in each of the above-described embodiments, the form in which the radiator tubes 1 are cleaned one by one in order to sequentially clean the radiator tubes 1 has been described. The cleaning may be performed for a plurality of tubes (for example, two tubes) at a time in a part of the plurality of tubes (for example, two tubes).

The snow melting target location is not limited to roads such as sidewalks and roads, but may be parking lots, open spaces for various uses, and the like, and the snow melting apparatus according to the present invention is not limited to snow melting and is not limited to roads. Can also be used to prevent freezing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire configuration of a snow melting apparatus according to a first embodiment.

FIG. 2 is an enlarged side view of a main part of the snow melting apparatus according to the first embodiment.

FIG. 3 is an enlarged plan view of a main part of the snow melting apparatus according to the first embodiment.

FIG. 4 is a perspective view showing a cleaning operation mode of the snow melting apparatus according to the first embodiment;

FIG. 5 is a perspective view showing an entire configuration of a snow melting apparatus according to a second embodiment and a cleaning operation form thereof.

FIG. 6 is an enlarged side view of a main part of the snow melting apparatus according to the second embodiment.

FIG. 7 is an overall configuration diagram of a snow melting apparatus according to a third embodiment, and
A perspective view showing the cleaning operation mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat radiating pipe 2 Distribution header pipe 2a Heating medium supply pipe 3 Collecting header pipe 3a Heating medium discharge pipe 4 Underground pit 4a Lid 5a Distribution side cleaning body conduction port 5b Collection side cleaning body conduction port 6 Cleaning body guide S Cleaning body Va Distributing side on-off valve Vb Collecting side on-off valve Vs Distributing side radiating pipe on-off valve Vr Collecting side radiating pipe on-off valve W Heat medium Y Snow melting target location

Claims (6)

[Claims] 1. A distribution header tube to which a heating medium supply pipe is connected, and a collective header tube to which a heating medium discharge pipe is connected, wherein one end of a plurality of radiator pipes juxtaposed to a snow melting target is connected to the distribution header tube. And the other ends of the radiator pipes are connected in parallel to the collective header pipe, and a distribution-side radiator pipe opening and closing is provided at a connection portion of each of the radiator pipes to the distribution header pipe. A valve is provided, and a radiating pipe opening / closing valve on a collecting side is provided at a connection portion of each of the radiating pipes to the collective header pipe, and each of the radiating pipes on the distribution header pipe side with respect to the radiating pipe on / off valve on the distribution side. In the vicinity of the connection portion to the distribution header tube, a distribution body cleaning port for the corresponding heat radiation pipe, and a distribution side conduction port opening / closing valve for individually opening and closing the cleaning body conduction port are provided, Opening and closing the radiator tube In the vicinity of the connecting portion of each of the heat radiating pipes to the collective header pipe on the side of the collective header pipe, the collective-side cleaning body conducting ports for the corresponding heat radiating pipes, and individually open and close the cleaning body conducting ports. A snow melting device provided with a conduit opening / closing valve on the collecting side. 2. A distribution header tube to which a heating medium supply pipe is connected, and a collective header tube to which a heating medium discharge pipe is connected, wherein one end of a plurality of radiator pipes juxtaposed to a snow melting target is connected to the distribution header tube. And the other ends of the radiator pipes are connected in parallel to the collective header pipe, and a distribution-side radiator pipe opening and closing is provided at a connection portion of each of the radiator pipes to the distribution header pipe. A valve is provided, and a radiating pipe opening / closing valve on a collecting side is provided at a connection portion of each of the radiating pipes to the collective header pipe, and each of the radiating pipes is provided on the side of the distribution header pipe with respect to the radiating pipe on / off valve on the distribution side. In the vicinity of the connection portion to the distribution header tube, a distribution body cleaning port for the corresponding heat radiation pipe, and a distribution side conduction port opening / closing valve for individually opening and closing the cleaning body conduction port are provided, Opening and closing the radiator tube In the vicinity of the connecting portion of each of the heat radiating tubes to the collective header tube on the opposite side to the collective header tube, the collective-side cleaning body conducting holes for the corresponding heat radiating tubes, and the cleaning body conducting ports are individually provided. A snow melting device provided with a conduit opening / closing valve on the collecting side that opens and closes. 3. A distribution header tube to which a heating medium supply pipe is connected, and a collective header tube to which a heating medium discharge pipe is connected, wherein one end of a plurality of radiation pipes juxtaposed to a snow melting target is connected to the distribution header tube. And the other ends of the radiator pipes are connected in parallel to the collective header pipe, and a distribution-side radiator pipe opening and closing is provided at a connection portion of each of the radiator pipes to the distribution header pipe. A valve is provided, and a radiating pipe opening / closing valve on a collecting side is provided at a connection portion of each of the radiating pipes to the collecting header pipe. In the vicinity of a connection portion of each pipe to the distribution header pipe, a distribution side cleaning body conduction port for a corresponding heat radiation pipe, and a distribution side conduction port opening / closing valve for individually opening and closing the cleaning body conduction port are provided. Side of said heat dissipation In the vicinity of the connecting portion of each of the heat radiating tubes to the collective header tube on the side of the collective header tube with respect to the opening / closing valve, the collective-side cleaning member conducting ports for the corresponding heat radiating tubes, and the cleaning member conducting ports are individually provided. A snow melting device provided with a conduit opening / closing valve on the collecting side that opens and closes. 4. The distribution body cleaning port provided on the distribution header tube side with respect to the distribution tube opening / closing valve on the distribution side,
Alternatively, the cleaning body between the radiator pipe corresponding to the cleaning body conduction port and the cleaning body conduction port on the collection side provided on the side of the collection header pipe with respect to the radiation pipe opening / closing valve on the collection side. The snow melting apparatus according to any one of claims 1 to 3, further comprising a cleaning body guide for guiding movement in the pipe. 5. A distribution header tube to which a heating medium supply pipe is connected, and a collective header tube to which a heating medium discharge pipe is connected, wherein one end of a plurality of radiator pipes juxtaposed to a snow melting target is connected to the distribution header tube. And the other ends of the radiator pipes are connected in parallel to the collective header pipe, and a distribution-side radiator pipe opening and closing is provided at a connection portion of each of the radiator pipes to the distribution header pipe. A valve is provided, and a radiating pipe opening / closing valve on a collecting side is provided at a connection portion of each of the radiating pipes to the collecting header pipe. In the vicinity of a connection portion of each pipe to the distribution header pipe, a distribution side cleaning body conduction port for a corresponding heat radiation pipe, and a distribution side conduction port opening / closing valve for individually opening and closing the cleaning body conduction port are provided. Side of said heat dissipation On the opposite side of the opening / closing valve from the collective header pipe, near the connecting portion of each of the heat radiating pipes to the collective header pipe, a collective-side cleaning port for a corresponding heat-radiating pipe, and the cleaning port. Snow melting device provided with a collective-side opening / closing valve that individually opens and closes. 6. An underground pit provided with a lid near the juxtaposed area of the radiator pipes on the surface of the ground, wherein the radiator pipe open / close valve and the conduction port open / close valve on the distribution side and the collection side are formed in the underground pit. The snow melting apparatus according to claim 1, wherein the snow melting apparatus is housed.