JP2011149241A - Snow melting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow melting system which melts snow on a roof and causes no snow slip. <P>SOLUTION: The snow melting system 1 includes: a plurality of support members 2 disposed on the roof 101 of a house 100; a meandering pipe part 3 constructed combining a plurality of pipes 4, 14 made of polyvinyl chloride resin to meander while intersecting the support members 2; pipe connecting and fixing parts 6 connecting the intersecting parts of the support members 2 and the meandering pipe part 3 and fixing and suspension-supporting the meandering pipe part 3 to the support members 2; an antifreeze liquid flowing through inside the meandering pipe part 3; a circulating pump 7 pumping up the antifreeze liquid 5 into the uppermost position of the meandering pipe part 3; and an antifreeze liquid heating part 9 for heating the antifreeze liquid. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a snow melting system, and more particularly, to a snow melting system that melts snow on a roof by flowing a heat medium inside a pipe meandering on the roof.

  Conventionally, in order to prevent snow damage such as collapse or damage of a house due to snow accumulation on the roof, a so-called “snow lowering” operation for dropping snow from the roof is sometimes performed. In particular, in cold regions where snow accumulation of 1 m or more is observed, it is necessary to frequently perform the above-mentioned snow lowering work during the winter season. Such work needs to be done by climbing on the roof of a high place, which is dangerous to the work and heavy labor, which can be a heavy burden for people in cold regions. In addition, since elderly people, women, and the like cannot perform snow-removing work, they may be asked to traders, which may be a financial burden.

  On the other hand, many devices, systems, and the like have been developed to save labor in the snow removal work. For example, a heating element such as nichrome wire is installed vertically or horizontally on the roof or under the roof, and a system is used to melt snow using the heat generated by flowing an electric current, or a pipe for flowing hot water or the like on the roof And a system for melting snow around the pipe using the heat of hot water flowing in the pipe has been developed (see, for example, Patent Document 1).

  However, when the above-described system for melting snow is used, the following problems may occur. That is, in the case of a system using a heating element or the like, if the amount of snow on the roof is relatively small, a sufficient snow melting effect can be obtained. However, when there is a large amount of snow of several tens of centimeters or more on the roof, when the above system is operated, only the periphery of the heating element and the pipe melts and a space is formed between the roof (heating element) and the snow. There was a possibility. And this space was crushed by the weight of the snow above, and was melted by coming into contact with the heating element again.

  At this time, since the frictional resistance between the snow crushing the space and the roof becomes small, there is a high possibility that the snow slides down from the roof due to the weight of the snow. As a result, there is a risk of falling from the roof over the snow stopper or damaging the snow stopper or the roof.

  Furthermore, the heating element is often provided directly on the upper surface of the roof or the lower surface of the roof. On the other hand, when a pipe is used, a support such as a metal fitting is attached to the roof, and the pipe is supported via the support. Therefore, the pipe and the top surface of the roof are often in close contact. As a result, the flow of water that has melted snow may be hindered, and dirt such as dead leaves that may have fallen on the roof may accumulate in the gaps between the pipes and supports and the roof, which may be time consuming to remove. It was.

  Therefore, in view of the above circumstances, the present invention has an object to provide a snow melting system that melts snow on the roof, does not cause snow slip, and can maintain a clean roof surface shape. Is.

  In order to solve the above problems, a snow melting system of the present invention includes a plurality of support members disposed on a roof of a building, and a plurality of polychlorinated salts that cross the support members and meander to the roof. A pipe connection that connects a meandering pipe part constructed by combining pipes made of vinyl resin, an intersection of the support member and the meandering pipe part, and fixes the meandering pipe part to the support member and supports it in a suspended state. A fixed part, a heat medium that circulates in the pipe of the meandering pipe part, a circulation pump that is connected to one end of the meandering pipe part and pumps the heat medium to the uppermost position of the meandering pipe part, and the meandering pipe And a heat medium heating section that is interposed between the circulation pump section and heats the heat medium ”.

  Here, the heat medium can use a liquid such as warm water or antifreeze, and is particularly used for a radiator of an automobile or the like that can circulate without freezing in a pipe even in a sub-freezing environment. It is preferable to use an antifreeze such as glycol or alcohol. Furthermore, the meandering pipe part is constructed by combining a plurality of polyvinyl chloride resin pipes (vinyl chloride pipes) so as to meander the roof surface, for example, from one end of the roof to the other end. It is assumed that the pipe is arranged in the horizontal direction, the pipe is bent in the opposite direction so as to change the flow direction of the heat medium at the other end side by 180 degrees, and this is repeated. The meandering direction may be changed in the vertical direction. Furthermore, the pipe connecting and fixing portion is a member that can support the meandering pipe portion in a suspended manner with respect to the support member, and it is possible to use a fixing fixture such as a well-known wire, a fastener, or the like.

  On the other hand, the circulation pump is capable of pumping a liquid heat medium such as antifreeze liquid from the position below the house to the top position of the roof, and a well-known business pump or the like can be used. The circulation pump may be connected to a storage tank or the like that temporarily stores a heat medium for circulating in the pipe. Furthermore, although the heat medium heating unit as a heat source for heating the heat medium is not particularly mentioned, various heat sources such as gas, electricity, and petroleum fuel can be used. For example, a commercial gas instantaneous water heater is applied. It is possible. As the heat medium, the heat medium circulation unit, and the heat medium heating unit, those used in a known snow melting system can be used.

  Therefore, according to the snow melting system of the present invention, it is possible to flow the heat medium heated at a predetermined temperature into the pipe of the meandering pipe portion arranged to meander on the roof surface. As a result, the snow on the roof can be melted using the heat propagated from the heat medium through the pipe. At this time, the heat medium is pumped up to the uppermost position of the meandering pipe portion by the circulation pump, and is circulated downward from the uppermost position. For this reason, the snow in the vicinity of the uppermost position starts to melt first due to the heat of the high-temperature heat medium, and at the same time, the heat of the heat medium is taken away, so that the temperature of the heat medium gradually decreases.

  Furthermore, the snow melting system of the present invention is connected and fixed so that the meandering pipe portion is suspended and supported by long bar-like support members arranged at predetermined intervals along the inclination of the roof surface of the roof of the building. Has been. Therefore, it is not necessary to install a fixing connecting member directly on the roof like a pipe laid on the roof in the conventional snow melting system. Furthermore, a gap is generated between the upper surface of the roof and the meandering pipe portion by being supported in a suspended state.

  Furthermore, the snow melting system of the present invention has the above-described configuration, in which “the support members are respectively disposed on the pair of roofs inclined relative to each other of the building, and the support members of each other at the top of the roof. May be connected to each other.

  Therefore, according to the snow melting system of the present invention, the ends of the pair of support members respectively disposed on the mutually opposed roofs are connected to each other at the top of the roof. As a result, it is possible to install the support member on the roof in a balanced state with the top of the roof as the apex, as in the so-called “yajirobe”. Note that the other end (corresponding to the eaves side) of the support member may be fixed to a “snow stop” installed in many houses in cold regions. This makes it possible to fix the meandering pipe portion in a stable state in which the balance is maintained in such a manner that the top portion and the snow stop are bridged by the support member.

  Furthermore, the snow melting system according to the present invention includes, in addition to the above configuration, “the support member includes a metal rod core portion and a resin resin coating portion covering the periphery of the rod core portion, and the pipe The connecting and fixing portion may be a “wire made of stainless steel is used”.

  Therefore, according to the snow melting system of the present invention, the support member is formed with a two-layer structure of the metal rod core portion and the resin resin coating portion covering the periphery of the rod core portion, and the pipe connecting and fixing portion is made of stainless steel. Wire is used. Thereby, when fixing the crossing site | part of a meandering pipe part with respect to a supporting member with a stainless steel wire, it becomes possible to fix easily by twisting and tightening the wire wound around the crossing site | part. At this time, since the surface of the support member is formed of the resin coating portion, the wire is fixed so that the wire bites into the surface of the resin coating portion by tightening the wire. Thereby, connection fixation in an intersection part becomes firm.

  Further, by using a stainless steel wire, a coated support member, and a pipe made of polyvinyl chloride resin, it has an action to prevent metal corrosion of a general tin roof. Here, the pipe diameter of the meandering pipe portion is not particularly limited, but for example, a pipe having a diameter of 25 mm can be selected in consideration of the flow of the internal heat medium, heat propagation, and pumping performance of the circulation pump.

  Further, the snow melting system according to the present invention may include, in addition to the above configuration, “a bent portion that changes a flow direction of the heat medium in the meandering pipe portion includes a pair of straight pipes and a connection pipe that connects one end of the straight pipes. And a U-shaped bent pipe that is integrally formed is used.

  Therefore, according to the snow melting system of the present invention, the U-shaped bent pipe is used for the bent portion of the meandering pipe portion that changes the flow direction of the heat medium by 180 degrees. Here, when it is going to comprise a bending part with the conventional snow melting system, at least 3 straight pipes and 2 L-shaped pipes are required, and connection work of at least 6 places is possible by connecting each. Necessary. For this reason, much work time is required for pipe connection. On the other hand, the U-shaped bent pipe adopted in the snow melting system of the present invention has a bent portion formed integrally, so the connection work can be reduced to two places, and work on the roof Time can be greatly reduced.

  Furthermore, the snow melting system of the present invention may have the above-described configuration, in which “the bent pipe has the straight pipes extending obliquely from the pipe end of the connecting pipe”.

  Therefore, according to the snow melting system of the present invention, a bent pipe is used in which a straight pipe extends obliquely from the pipe end of the connecting pipe. Here, some roofs of buildings that employ the snow melting system of the present invention have a step (convex portion) formed on the roof surface of the roof. When constructing a meandering pipe portion by combining pipes with this type of roof, it is necessary to form a bent portion that exceeds the stepped portion, and generally five straight pipes and four L It was necessary to connect the eight pipes by combining the character pipes. Therefore, by forming the straight pipe portion to bend in one direction upward or downward like the above U-shaped pipe, the above eight connection operations can be omitted in two locations.

  As an effect of the present invention, the meandering pipe part is suspended and supported by the support member, so that the flow of the roof surface is not hindered by the meandering pipe part and snow can be melted from the upper part of the roof.

It is a mimetic diagram showing a schematic structure of a snow melting system of this embodiment. It is the schematic diagram seen from the side which shows schematic structure of a snow melting system. It is explanatory drawing which shows the fixed state of a supporting member and a meandering pipe part. It is explanatory drawing which shows the structure of a supporting member. It is (a) top view which shows the structure of a bending pipe, (b) Right view, (c) Front view. It is a schematic diagram which shows schematic structure of the snow melting system of another embodiment. It is (a) top view which shows the structure of an inclination bending pipe, (b) Right view, (c) Front view.

  Hereinafter, the snow melting system 1 which is one Embodiment of this invention is demonstrated based on FIG. 1 thru | or FIG. Here, FIG. 1 is a schematic diagram showing a schematic configuration of the snow melting system 1 of the present embodiment, FIG. 2 is a schematic diagram showing the schematic configuration of the snow melting system 1 viewed from the side, and FIG. FIG. 4 is an explanatory view showing a fixed state of the meandering pipe portion 3, and FIG. 4 is a (a) plan view, (b) right side view, and (c) front view showing the configuration of the bending pipe 4. The snow melting system 1 of this embodiment illustrates what is installed in the tin roof 101 of the general house (house 100) built in the cold region. Here, the house 100 includes a pair of roofs 101 having roof surfaces 102 that are inclined so as to face each other (see FIG. 2).

  As shown in FIGS. 1 to 5, the snow melting system 1 of the present embodiment includes a meandering pipe portion 3 installed so as to meander on the roof 101 of a house 100, and heating mainly containing ethylene glycol inside the pipe. By flowing the antifreeze liquid 5, the snow S accumulated on the roof 101 is melted using the heat of the antifreeze liquid 5.

  More specifically, the support member 2 having a plurality of long bar shapes arranged along the inclination direction of the roof 101, and the meander pipe portion 3 installed so as to cross the support member 2 and meander to the roof 101. A pipe connecting and fixing portion 6 for connecting and fixing the supporting member 2 and the intersecting portion of the meandering pipe portion 3 that intersects below the supporting member 2, an antifreeze liquid 5 that circulates inside the pipe of the meandering pipe portion 3, and a meandering A circulation pump 7 for pumping the antifreeze liquid 5 to the uppermost position of the pipe part 3, a storage tank 8 for temporarily storing the antifreeze liquid 5 flowing through the meandering pipe part 3, and an antifreeze liquid heating for heating the stored antifreeze liquid 5 to a predetermined temperature. It is mainly configured to include a unit 9 and a system control unit 10 that is connected to the circulation pump 7 and the antifreeze liquid heating unit 9 and electrically controls the flow rate and heating amount of the antifreeze liquid 5. Here, the antifreeze liquid 5 corresponds to the heat medium of the present invention, and the antifreeze liquid heating section 9 corresponds to the heat medium heating section of the present invention. In addition, the antifreeze liquid 5 contains a high concentration ethylene glycol component of 50% to 60%.

  If it explains in full detail about each structure of the snow melting system 1, the supporting member 2 will be provided with the resin core part 11 which was equipped with the stainless steel rod core part 11 in the center part, and coat | covered the circumference | surroundings of the said rod core part 11 with resin hard rubber. It has a two-layer structure (see FIG. 4). Accordingly, the stainless steel rod core portion 11 provides durability and load resistance, and the resin coating portion 12 has a surface made of a softer material than metal.

  And the said supporting member 2 is distribute | arranged so that a longitudinal direction may correspond to each inclination direction of the pair of roof 101 in which the house 100 inclines with respect to each other. Here, a plurality of support members 2 are arranged at predetermined intervals in the width direction (lateral direction) of the roof 101. Then, the ends 2 a of the pair of support members 2 arranged on the roof surface 102 facing each other are connected to each other by the fixture 13 at the top 103 of the roof 101. On the other hand, the other end 2 b of the support member 2 is connected to a snow stop 104 provided in the vicinity of the eaves of the roof 101. As a result, the pair of support members 2 are supported around the top portion 103 so as to be bridged between the top portion 103 and the snow stop 104 while being balanced, as in the so-called “frozen”. At this time, a space is formed between the support member 2 and the roof surface 102 of the roof 101.

  On the other hand, the meandering pipe part 3 is constructed by combining a plurality of pipes 4 and 14 in the meandering pipe part 3 installed in the space between the support member 2 and the roof surface 102 described above. It is set slightly shorter than the length in the width direction and is installed at each of the long pipe 14 arranged along the width direction and the meandering end of the meandering pipe portion 3, and the direction in which the antifreeze liquid 5 flows (circulation direction, circulation direction). ) Is changed by 180 ° C., and a substantially U-shaped bent pipe 4 (see FIG. 5) is joined. The bent pipe 4 is mainly configured by a pair of straight pipes 16a and 16b and a single connection pipe 17 that connects the pipe ends of the straight pipe 16a and the like, and is integrally formed by resin processing molding. Yes. Here, since the pipe inner diameter of the straight pipe 16a or the like of the bent pipe 4 and the pipe outer diameter of the long pipe 14 are substantially matched, the tip of the long pipe 14 is connected to the straight pipe 16a or the like of the bent pipe 4 or the like. Each can be connected by inserting it into the pipe opening. In addition, in order to hold | maintain the said insertion state firmly, you may fix pipes using a well-known fixing means (an adhesive material, a fixture, etc.). Furthermore, since the antifreeze liquid 5 circulates inside each of the connected pipes, it is necessary to use a waterproof seal or the like to make the liquid-tight state so that liquid leakage does not occur at the connection location. Here, in order to simplify the illustration, the pipe outer diameters of the bent pipe 4 and the long pipe 14 are shown to be the same in FIG.

  Thereby, the meandering pipe part 3 meandering on the roof 101 can be constructed. Here, the meandering pipe portion 3 (long pipe 14, bent pipe 4) is made of polyvinyl chloride resin. Furthermore, between the long pipes 14 arranged horizontally along the width direction is set to have a space of about 18 cm to 20 cm, and the pipe diameter inside the pipe is set to about 25 mm. By adopting the meandering pipe portion 3 having the above specifications, the snow melting system that exhibits sufficient snow melting performance without impairing the aesthetics of the house 100 itself and has sufficient pumping capacity (pumping performance) of the circulation pump 7. 1 can be constructed.

  Here, when constructing the actual snow melting system 1, after installing the meandering pipe part 3 on the roof 101, the support member 2 is installed so as to cross the meandering pipe part 3, The support member 2 and the meandering pipe portion 3 are connected and fixed (see FIG. 3). Specifically, the meandering pipe portion 3 arranged to intersect the lower portion of the support member 2 is connected and fixed using the pipe connecting and fixing portion 6. In the snow melting system 1 of the present embodiment, a stainless steel wire is used as the pipe connecting and fixing portion 6, and an annular wire is applied to the intersecting portion of the support member 2 and the long pipe 14, and the meander pipe is twisted. The part 3 and the support member 2 are fixed. Then, by performing the above connecting process on all the intersecting portions of the support member 2 and the meandering pipe portion 3, the meandering pipe portion 3 is suspended and supported by the support member 2.

  At this time, the outer surface of the support member 2 is covered with the resin coating portion 12 made of hard rubber. Therefore, a part of the wire bites into the surface of the resin coating portion 12 when fastening and fixing using the above-described wire. Thereby, fastening fixation becomes more stable.

  Further, a gap is formed between the bottom surface side of the long pipe 14 and the roof surface 102 by the meandering pipe portion 3 suspended below the support member 2. Therefore, snow is melted by the heat of the antifreeze liquid 5 and the phase-transferred water can flow down to the eaves side through the gap, and in addition, dead leaves and the like can also be dropped to the eaves side. In some cases, the roof surface 102 may be in contact with the self-weight of the meandering pipe portion 3.

  Moreover, the snow melting system 1 of this embodiment has the system control part 10 connected with the uppermost position and lowermost position of the meandering pipe part 3, and the circulation pipes 18a and 18b, respectively, and installed in the outer side of the house 100. . A specific configuration will be described. The system control unit 10 is connected to the lowest position of the meandering pipe unit 3 on the roof surface 102 via the circulation pipe 18a, and a storage tank 8 that temporarily stores the antifreeze liquid 5; An antifreeze liquid heating section 9 formed by modifying a gas instantaneous water heater for heating the antifreeze liquid 5 in the storage tank 8 to a predetermined temperature, and the storage tank 8 are connected to the heated antifreeze liquid 5 at the top of the meandering pipe section 3. A circulation pump 7 that pumps up to a position through a circulation pipe 18b, and an antifreeze liquid heating unit 9 and a circulation pump 7 that are electrically connected to each other and a circulation control unit 19 that controls a heating amount and a circulation amount are collectively configured. is there. The system control unit 10 has a configuration such as an operation panel for inputting commands necessary for control, a temperature sensor provided in the antifreeze liquid heating unit 9 and the circulation pump 7, a monitor for displaying the values of the flow rate sensors, and the like. (Both not shown). In addition, a small motor 20 is provided between the storage tank 8 and the antifreeze liquid heating unit 9, and can be circulated with each other. By adopting the above configuration, the antifreeze liquid 5 can flow between the meandering pipe part 3, the storage tank 8, the antifreeze liquid heating part 9, and the circulation pump 7.

  Here, in a state in which the snow melting system 1 is installed and the circulation pump 7 is not operated by the system control unit 10, the inside of the meandering pipe portion 3, the inside of the circulation pipes 18a and 18b, the storage tank 8 and the circulation pump 7 are connected. The interiors of the pipes 18c to be connected are filled with the antifreeze liquid 5 respectively. Although the antifreeze liquid 5 inside the meandering pipe portion 3 has a force to flow down according to gravity, since the antifreeze liquid 5 is filled in the entire system, a force against the force acts, State is maintained. Therefore, since the antifreeze liquid 5 is in a sealed state that is completely blocked from the outside, it is hardly contaminated during distribution. Therefore, after the antifreezing liquid 5 is filled in the snow melting system 1 of the present embodiment, the amount of the antifreezing liquid 5 does not decrease, so that a replenishing operation is not required. In addition, in order to remove dust etc. in the pipe, a removal filter may be provided at one of connection portions of each configuration. This reduces the need to perform operations such as replenishment and replacement of the antifreeze liquid 5.

  Next, an example of the melting process of the snow S using the snow melting system 1 of this embodiment will be described. When snow is observed on the roof 101 of the house 100 and snow S is accumulated at a height of several tens of centimeters (see FIG. 3), the operation panel of the system control unit 10 is operated to operate the snow melting system 1 of the present embodiment. Put it in a state. Thereby, the operation of the antifreeze liquid heating unit 9 and the circulation pump 7 is started. At this time, the heating temperature of the antifreeze liquid 5 by the antifreeze liquid heating unit 9 (for example, 50 ° C. to 60 ° C.), the circulation speed of the antifreeze liquid 5 by the circulation pump 7 (2 m / s), and the operation time (shut down in 6 hours from the start of operation). Enter and set each condition. As a result, each component operates under the conditions installed by the system control unit 10.

  By operating the circulation pump 7, the antifreeze liquid 5 is circulated on the route from the circulation pump 7 to the circulation pipe 18 b, the uppermost position to the lowest position of the meandering pipe section 3, the circulation pipe 18 a to the storage tank 8, and the route returning to the circulation pump 7. Start (see arrow in FIG. 1).

  Simultaneously with the start of circulation of the antifreeze liquid 5, the antifreeze liquid heating unit 9 and the motor 20 between the antifreeze liquid heating unit 9 and the storage tank 8 are operated. Thereby, the cold antifreeze liquid 5 is sent from the storage tank 8 to the antifreeze liquid heating unit 9 via the motor 20, and the hot antifreeze liquid 5 heated by the antifreeze liquid heating unit 9 is returned to the storage tank 8 again. Note that the hot antifreeze liquid 5 heated by the antifreeze liquid heating unit 9 may be led out to the circulation pump 7 as it is and sent to the meandering pipe unit 3.

  When the cold antifreeze liquid 5 is heated by the antifreeze liquid heating unit 9, the temperature of the antifreeze liquid 5 passing through the storage tank 8 gradually increases. Then, the antifreeze liquid 5 heated to a predetermined temperature (for example, 50 ° C. to 60 ° C.) is pumped up to the uppermost position of the meandering pipe portion 3 through the circulation pump 7 and the circulation pipe 18b. The circulation pump 7 only needs to have the performance of pumping up the antifreeze liquid 5 to the uppermost position, and the antifreeze liquid 5 after being pumped flows through the inside of the meandering pipe portion 3 according to its own weight.

  At this time, the heat of the antifreeze liquid 5 heated by the antifreeze liquid heating section 9 propagates from the inside of the meandering pipe section 3 to the outside of the pipe. Therefore, the snow S in contact with the outer surface of the meandering pipe portion 3 is warmed, and the snow S around the meandering pipe portion 3 is melted. Thereby, the snow S can be phase-shifted to water, and the snow S on the roof 101 can be lost. Here, when the antifreeze liquid 5 flows while meandering the roof 101, the snow S on the upper part of the roof 101 is mainly melted immediately after the operation of the snow melting system 1. The temperature of the antifreeze liquid 5 flowing inside the pipe gradually decreases due to the heat loss. For this reason, heat for melting the snow S accumulated from the vicinity of the center of the roof 101 to the lower side (the eaves side) cannot be given and flows down as it is. In addition, since the antifreeze liquid 5 containing a high concentration ethylene glycol component of 50% or more is used, the antifreeze liquid 5 does not freeze inside the pipe or the like even during operation and non-operation.

  Then, by continuing the operation of the snow melting system 1, the entire snow S on the roof 101 can be melted. That is, the snow S on the roof 101 can be melted stepwise from above (the top 103 side). Therefore, the snow is not melted in the same manner in the entire roof like a snow melting system using a heating element such as a conventional nichrome wire. As a result, the snow S on the roof 101 can be safely and effectively lost without performing dangerous work such as snow removal. An example of the case where the snow melting system 1 of the present embodiment is adopted is shown. When a meandering pipe portion 3 having a total length of about 710 m is constructed in a building having a roof area of 458 square meters, the snow S of 50 cm or more on the roof 101 is obtained. It was possible to melt the snow S almost completely by operating this system for about 2 days from the state of accumulation. Furthermore, since the snow S sequentially disappears from the top of the roof 101, it is possible to suppress the occurrence of snow sliding that slides down the roof surface 102 by the weight of the snow S as in the conventional case, and it is possible to prevent the house 100 from being damaged.

  In addition, in the case of the snow melting system 1 of the present embodiment, the fixing bracket is not provided directly on the roof side as in the prior art, but is supported by suspension on the support member 2 spanned between the top 103 and the snow stop 104. Therefore, the melted water can flow through the meandering pipe portion 3 below. Furthermore, since dust and the like accumulated on the roof 101 can also flow down, the dirt on the roof 101 can be prevented.

  Moreover, in the case of the snow melting system 1 of this embodiment, the pipe connection fixing part 6 which consists of stainless steel wires, the support member 2 which has the resin coating part 12 made from hard rubber, and the meandering pipe part 3 made from polyvinyl chloride are used. Thus, metal corrosion of the tin roof 101 can be prevented. Therefore, the installed snow melting system 1 can be operated over a long period of time. In the case of the roof 101 made of tin, it is necessary to paint the tin surface about once every several years (for example, 10 years). At this time, the pipe 4 made of polyvinyl chloride or the like may be coated at the same time. Thereby, the weather resistance of the pipe 4 etc. can be improved.

  In addition, the snow melting system 1 of the present embodiment can exhibit excellent operational effects in summer seasons other than the winter season with snow accumulation. More specifically, when the roof 101 receives direct sunlight from the summer sun, it may be heated to a high temperature of 60 degrees or more. At this time, the pipe of the meandering pipe portion 3 is filled with the antifreeze liquid 5 as a heat medium as it is. Therefore, the heat of the tin roof is transmitted to the antifreeze liquid 5 through the pipe 4 and the like. Here, since the specific heat of the antifreeze liquid 5 composed of the ethylene glycol component and water is larger than that of metallic tin, it takes time for the antifreeze liquid 5 to reach a high temperature. As a result, the expansion of the pipe 4 and the like in the summer can be suppressed, and the temperature rise of the roof 101 itself can be prevented. A part of the antifreeze liquid 5 that has received heat and has expanded in volume flows down to the storage tank 8 below.

  The circulation pump 7 only needs to be capable of pumping the antifreeze liquid 5 to the uppermost position of the meandering pipe portion 3, and the antifreeze liquid 5 circulates from the uppermost position while meandering by its own weight. For this reason, it is not necessary to use a circulating pump 7 having a very high capacity. With the above configuration, the snow melting system 1 can be constructed easily and inexpensively. Therefore, this system can be adopted even in ordinary houses in cold regions.

  Furthermore, by adopting the integrally formed substantially U-shaped bent pipe 4 as a part of the meandering pipe part 3, the construction work of the meandering pipe part 3 is simplified, and the danger at a high place is high. Work can be completed in a short time. Therefore, the safety of workers can be ensured and the working time can be shortened.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

  That is, in the snow melting system 1 of the present embodiment, the long pipe 14 of the meandering pipe portion 3 is arranged along the width direction (horizontal direction) of the roof 101, but is not limited to this. 6 and a snow melting system 21 as shown in FIG. 7 may be constructed. Here, FIG. 6 is a schematic diagram showing a schematic configuration of the snow melting system 21 of another embodiment, and FIG. 7 is a (a) plan view, (b) a right side view, and (c) showing a configuration of the inclined bent pipe 22. It is a front view. In addition, about the thing which has the same structure and function as the snow melting system 1 mentioned above, the same number is attached | subjected and description shall be abbreviate | omitted.

  The snow melting system 21 is a meandering pipe section constructed by arranging long pipes 24 along the inclination direction (longitudinal direction) of the roof 101 and connecting the long pipes 24 with the inclined bending pipes 22 above and below the roof 101. 23. Further, a support member 25 is provided in the width direction (horizontal direction) of the roof 101 so as to intersect the meandering pipe portion 23.

  Therefore, the antifreeze liquid 5 that has flowed downward from the uppermost position of one end of the meandering pipe portion 23 is displaced to flow upward by the inclined bent pipe 22 at the lower part of the roof 101. Thereafter, the antifreeze liquid 5 that has reached the uppermost position of the roof 101 is displaced again by the inclined bent pipe 22 into a downward flow. As a result, the antifreeze liquid 5 moves in the lateral direction of the roof 101. As a result, the snow S on the roof 101 melts from one end (left end in the case of FIG. 6) toward the other end (right end). Since the snow melting method is the same, the description is omitted.

  Here, an inclined bent pipe 22 is employed in the meandering pipe portion 23 of the snow melting system 21 (see FIG. 7). On the roof 101 of the house 100, a convex beam 105 may be formed on the roof surface 102 along the inclination direction. In this case, in the meandering pipe portion 3 described above, the long pipe 14 and the like are installed on the crosspiece 105, and the distance between the roof surface 102 and the pipe bottom surface of the long pipe 14 becomes too large, which is good. It may not be possible to obtain a good snow melting effect. Therefore, as shown in FIG. 7, an inclined bent pipe 22 is used in which the extending direction of the pair of straight pipes 27 a and 27 b extending from one end of the connecting pipe 26 is inclined. Accordingly, as shown in FIG. 7B, the long pipe 24 of the meandering pipe portion 23 can be brought close to the roof surface 102 by using the inclined bent pipe 22 that is inclined in accordance with the height of the crosspiece 105. it can. Here, there are two types of support members 25 that are spanned between the crosspieces 105 and those that substantially match the length of the roof 101 in the width direction. In this case, the ends of the support members 25 are fixed to the roof 101 using a fixture (not shown). By adopting the inclined bent pipe 22 having the above-described configuration, it is possible to shorten the work time for constructing the meandering pipe portion 23.

DESCRIPTION OF SYMBOLS 1,21 Snow melting system 2,25 Support member 3,23 Meandering pipe part 4 Bending pipe 5 Antifreeze liquid 6 Pipe connection fixed part 7 Circulation pump 8 Storage tank 9 Antifreeze liquid heating part (heat medium heating part)
DESCRIPTION OF SYMBOLS 10 System control part 11 Rod core part 12 Resin coating | coated part 16a, 16b, 27a, 27b Straight pipe 17, 26 Connection pipe 22 Inclined bending pipe (bending pipe)
100 House (Building)
101 roof 102 roof surface 103 top S snow

JP 2007-197913 A

Claims (5)

A plurality of support members disposed on the roof of the building;
A meandering pipe portion constructed by combining a plurality of pipes made of polyvinyl chloride resin so as to cross the support member and meander to the roof;
A pipe connection fixing portion for connecting the support member and the intersecting portion of the meandering pipe portion, fixing the meandering pipe portion to the support member, and supporting the suspension;
A heat medium that circulates in the pipe of the meandering pipe portion;
A circulation pump connected to one end of the meandering pipe part and pumping up the heat medium to the uppermost position of the meandering pipe part;
A snow melting system, comprising: a heat medium heating part interposed between the meandering pipe part and the circulation pump part, for heating the heat medium. The support member is
Arranged on a pair of roofs inclined relative to each other of the building,
The snow melting system according to claim 1, wherein one ends of the support members are connected to each other at the top of the roof. The support member is
A metal rod core,
A resin-coated portion made of resin that covers the periphery of the rod core portion;
The pipe connection fixing part is
The snow melting system according to claim 1 or 2, wherein a stainless steel wire is used. The bent part that changes the flow direction of the heat medium of the meandering pipe part,
4. A U-shaped bent pipe that is integrally formed and has a pair of straight pipes and a connecting pipe that connects one end of the straight pipes to each other. The snow melting system as described in one. The bent pipe is
The snow melting system according to claim 4, wherein each straight pipe extends in an oblique direction from a pipe end of the connection pipe.

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