JP4704773B2 - Floor heating mat with heating medium branch block - Google Patents

Description

  The present invention relates to a floor heating mat having a heat medium branching block that distributes a heat medium from a heat source machine to a piping circuit in the floor heating mat.

  In buildings such as ordinary houses, apartment houses, hotels, hospitals, elderly care facilities, etc., floor heating systems that heat from the floor surface are becoming popular for the purpose of improving the comfortability. Such a floor heating system heats a room by radiant heat from a floor surface heated by a heat medium flowing through a pipe in the floor heating mat.

In floor heating mats with a large laying area, if the heat medium circulates through the entire floor heating mat through a single piping circuit, the temperature difference between the heat medium that begins to circulate in the floor heating mat and the heat medium that circulates and ends increases. As a result, temperature unevenness occurs on the floor heating radiating mat surface. For this reason, when installing a floor heating mat with a relatively large laying area, the heat medium carried by the connection piping from the heat source machine is branched into a plurality of piping circuits at the floor heating mat entrance, and the floor heating mat is simultaneously heated. Generally, the temperature unevenness of the floor heating mat is eliminated by circulating the inside of the mat. In order to branch the heat medium that has passed through one communication pipe into a plurality of pipes, for example, a heat medium branch block as disclosed in Patent Document 1 is used.
JP 2000-193176 A

  In many cases, the base mat in which the piping of the floor heating mat is embedded is a single base mat as a whole by laying a plurality of base mat pieces. One piece of the base mat piece is provided with a notch for arranging the heat medium branch block and a groove serving as a circuit of a pipe branched there.

  However, the floor heating mats vary in size, and the optimum number of piping circuits varies depending on the size and the environment in which they are laid. Depending on the number, it is necessary to manufacture base mat pieces having grooves with different sizes and numbers of notches, which has been a factor in increasing the cost of floor heating mat construction.

  Also, when a base mat made of foamed synthetic resin with a relatively high foaming ratio is used, the base mat is slightly bent and connected when a load from the floor is applied to the connecting part of the heat medium branch block and the pipe. There was also a problem that stress was concentrated on the pipe connection part of the heat medium branch block due to the load applied to the part.

  Then, an object of this invention is to provide the floor heating mat excellent in durability which can be constructed simply and at low cost.

  As a result of intensive studies, the present inventors have divided the base mat piece of the part where the heat medium branch block is arranged into a part having a notch part where the heat medium branch block is arranged and another part surrounding the part. The present inventors have found that the above problems can be solved, and have completed the present invention.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

The present invention relates to a foamed synthetic resin base mat (100) in which a groove for fitting a pipe (50) for circulating a heat medium is inserted, the pipe (50) embedded in the groove, A heating medium branch block (10) for branching the heating medium into one or more piping circuits of the base mat (100), and a floor made of a thin metal plate laminated on the base mat (100) In the heating mat, the base mat (100) is formed by connecting a plurality of base mat pieces, and one of the base mat pieces (40) is further provided with the heat mat. A heating medium branching portion base mat piece (20) provided with a notch (22) for disposing the medium branching block (10), and surrounding the heat medium branching portion base mat piece. heating medium branch having a cutout portion (32) A floor heating mat comprising the side portion base mat piece (30), wherein the base material mat piece in the vicinity of the heat medium branch is provided with a curved portion of the groove, and solves the above problems. Is.

In this aspect, piping for circulating the heat medium from both ends (22) of the notch for arranging the heat medium branch block to the end of the heat medium branch base mat piece (20) ( 50) is preferably engraved with a groove (21), and the heating medium branch portion base mat piece (20) is made of a heating medium having at least one open end. It is preferable to have a groove (21 ′) for inserting a pipe (50) for circulation.

  Further, the heat medium branching portion base mat piece (20), the heat medium branching portion vicinity base mat piece (30), and the other base mat pieces are embedded in the grooves at the sides where they contact each other. It is also preferable to form one base mat (100) by connecting the ends of the pipe (50).

  According to this invention, the floor heating mat excellent in durability which can be constructed simply and at low cost can be provided.

  In the floor heating mat of the present invention, the part of the base material mat piece where the heat medium branch block is arranged is composed of a small heat medium branch part base mat piece and a surrounding heat medium branch part base mat piece. Since it consists of members, even when using a heat medium branch block for a different number of piping circuits, only a small heat medium branch base mat piece needs to be replaced. Therefore, it is not necessary to manufacture the entire base mat piece of the portion where the heat medium branch block is arranged for each construction of the floor heating mat, and the floor heating mat can be easily installed at low cost.

  Further, since the heat medium branching portion base mat piece is small, only this portion can be made of a foamed synthetic resin having a low expansion ratio without affecting the cushioning property and cost of the entire floor heating mat. By doing so, it is also possible to prevent stress from being concentrated on the pipe connection portion of the heat medium branching block due to the load from above the floor.

  Such an operation and a gain of the present invention will be clarified from the best mode for carrying out the invention described below.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

  FIG. 6 is an example of laying a base mat 200 portion of a floor heating mat having a conventional heat medium branching block 10. In the base mat 200 of FIG. 6, a plurality of base mats are connected to form a single base mat 200, and hot water or the like is provided in the grooves carved on the base mat pieces. A pipe 50 for circulating the heat medium is inserted. The base material mat piece 40 at the end of the base material mat 200 is provided with a notch, and the heat medium branch block 10 is disposed there. The heat medium branching block 10 has a plurality of heat mediums so that the heat medium warmed by the heat source device sent from one communication pipe can be circulated through the floor heating mat simultaneously through a plurality of pipe circuits. The pipe 50 is branched. In some cases, it is used to send the heat medium as it is from the connecting pipe to one pipe circuit without branching. Hereinafter, “branching” by the heat medium branching block 10 includes the case of sending only to one piping circuit.

  Since the shape of the heat medium branch block 10 used in the floor heating mat and the groove in the vicinity thereof vary depending on the number of piping circuits through which the heat medium branch block 10 branches the heat medium, the base mat piece in the vicinity of the heat medium branch block 10 40 was produced each time according to the floor heating mat to be constructed.

  FIG. 1 is an example of laying a base mat 100 portion of a floor heating mat having a heat medium branching block 10 of the present invention. Similar to FIG. 6, a single base mat 100 is formed by a plurality of base mat pieces. However, unlike FIG. 6, the portion of the base mat piece 40 having the heat medium branch block 10 includes the heat medium branch portion base mat piece 20 having a notch for arranging the heat medium branch block, and It consists of two members of the base material mat piece 30 in the vicinity of the heat medium branch surrounding the surroundings.

  In the floor heating mat of the present invention, in the base mat 100, the base mat piece 40 in the portion where the heat medium branch block 10 is installed in this way is the base material mat piece 30 in the vicinity of the heat medium branch and the heat medium branch base. It is characterized by being divided into material mat pieces 20. By doing so, the member to be changed according to the groove engraving pattern, the size of the floor heating mat, the shape and material of the heat medium branch block 10, the number of piping circuits through which the heat medium branch block 10 branches the heat medium, etc. Only the small heat medium branching portion base mat piece 20 in the base mat piece 40 is used, thereby enabling easy construction and cost reduction.

  FIG. 2 is an enlarged view of the base material mat piece 30 in the vicinity of the heat medium branch in FIG. In the heat medium branching vicinity base mat piece 30, there are four grooves 31 for embedding the pipe 50, and each part of the groove 31 is a cut for fitting the heat medium branching base mat piece 20. Notched by the notch 32. In the embodiment using the base material mat piece 30 in the vicinity of the heat medium branch, the heat medium branch block 10 can branch the heat medium into four piping circuits corresponding to the number of the grooves 31 at the maximum. As long as the heating medium branching vicinity base mat piece 30 is branched into the four or less piping circuits, the same one is used regardless of the number of piping circuits.

  FIG. 3 is an example of the heat medium branch base mat piece 20 laid in the notch 32 of the heat medium branch vicinity base mat piece 30 of FIG. The outer shapes of the three heat medium branch base mat pieces 20a, 20b, and 20c in FIG. 3 are all the same as the shape of the notch 32 of the heat medium branch vicinity base mat piece 30, and the heat medium branch vicinity portion. It can be laid in the notch 32 of the base mat piece 30 without any gap or overlap. Further, the heat medium branching portion base mat pieces 20a, 20b, and 20c have four grooves 21 as in the case of the heat medium branching vicinity portion base mat piece 30, and at least a part of each of the one or more grooves 21 is provided. The heat medium branch block 10 is cut out by a notch 22 for installing the heat medium branch block 10. The four grooves 21 are arranged such that when the heat medium branch base mat pieces 20a, 20b, and 20c are laid in the notch 32 of the heat medium branch vicinity base mat piece 30, the outer ends of the four grooves 21 have heat medium branches. Each of the pipes 50 is engraved so as to be connected to the groove 31 of the vicinity base mat piece 30 to form one continuous groove, and the pipe 50 is connected to the heat medium branch vicinity base mat piece 30 and the heat medium branch base. The material mat pieces 20a, 20b and 20c can be inserted.

  The difference between the three heat medium branch portion base mat pieces 20 a, 20 b, and 20 c is the number of grooves 21 cut out by the cutout portions 22 for arranging the heat medium branch blocks 10. The number of grooves 21 to be cut out is the same as the number of piping circuits through which the heat medium branch block 10 branches the heat medium, and which of the heat medium branch base mat pieces 20a, 20b, 20c is used. Is determined by the number of piping circuits.

  In FIG. 4, the four grooves 21 are all cut out by the notch portion, and the heat medium branch portion base mat piece 20 c of FIG. 3 in which the heat medium branch block 10 c is arranged in the notch portion 22. It is an enlarged view. The heating medium branch block 10c has four each on the left and right, a forward piping connecting portion 13 for carrying the heating medium into the floor heating mat, and a return piping connecting portion 14 for returning the heating medium from the floor heating mat, Each piping connection part 13 and 14 is connected with the piping edge part inserted by the groove | channel 21 in the edge part of the four groove | channels 21 where the heat medium branch part base material mat piece 20c was notched.

  The heating medium branch block 10c includes an outgoing communication pipe connecting part 11 for the outgoing communication pipe that carries the heating medium heated by the heat source device in a direction orthogonal to the pipe connecting parts 13 and 14, and the floor heating mat. And a return connection pipe connecting part 12 for return connection pipes for transporting the heat medium that has been circulated to the heat source unit. The heat medium that has entered the heating medium branching block 10c from the forward connection pipe connecting portion 11 is distributed from the four forward pipe connecting portions 13 to the four pipes 50, and floor heating is independently performed along each piping circuit. Circulate in the mat. The heat medium that has been circulated while radiating heat in the floor heating mat enters the heat medium branch block 10c from the four return pipe connecting portions 14, where it again becomes a flow of one heat medium and returns to the return connecting pipe connecting portion. 12 returns to the heat source machine via the connecting pipe. For example, Patent Document 1 can be referred to for the detailed structure of the heat medium branching block 10c, but this is merely an example, and the structure is not limited.

  FIG. 5 shows the heat medium branch portion base of FIG. 3 in which two of the four grooves 21 are cut out by the cutout portion 22, and the heat medium branch block 10 b is arranged in the cutout portion 22. It is an enlarged view of the material mat piece 20b. The heat medium branch block 10b has two forward pipe connecting portions 13 and a return pipe connecting portion 14 on the left and right, and each of the pipe connecting portions 13 and 14 is formed by two cutout grooves 21. The notch side end is connected to the end of the pipe 50 fitted in the groove 21 of the heat medium branching portion base mat piece 20b. The pipes 50 are inserted as they are into the two grooves 21 ′ that are not cut out, that is, both ends are open to the side surfaces of the heat medium branching portion base mat piece 20 b, and form a part of the piping circuit. Also in the case of one or three heat medium branch base mat pieces 20 having a piping circuit, the notched groove 21 is formed at the notch side end as in the case of the heat medium branch base mat piece 20b. The groove 21 ′ connected to the pipe connecting portions 13 and 14 of the block 10 and opened at the other ends is directly fitted with the pipe 50 and becomes a part of the pipe circuit.

  In the heat medium branching portion base mat piece 20 and the heat medium branching vicinity portion base mat piece 30, the piping 50 is embedded in a piping circuit formed by connecting another base mat piece and a groove, as shown in FIG. One base mat 100 in which such a pipe 50 is inserted is formed.

  The base mat is made of 100 foam synthetic resin. As foamed synthetic resin, polyurethane foam, polyethylene foam, polypropylene foam, polystyrene foam, polyvinyl chloride foam, polymethyl methacrylate foam, polycarbonate foam, polyphenylene oxide foam, foam of polystyrene and polyethylene mixture In particular, polyethylene foam, polypropylene foam, and polystyrene foam are preferably used from the viewpoint of cost and processability.

  As the base mat 100, a foamed synthetic resin having a high expansion ratio is usually used in order to improve cost and walking cushioning properties, and all base materials are used from the viewpoint of long-term quality stability. The same material foam synthetic resin is used for the mat piece. However, when a foamed synthetic resin having a high foaming rate is used, the base mat 100 is easily bent when a load is applied from above the floor. Therefore, when a load is applied to the base mat piece 40 portion, the end of the base mat piece 40 Therefore, there is a problem in that a load is applied to the pipe connecting portions 13 and 14 connected to the pipe 50 and stress is easily concentrated on the pipe connecting portions 13 and 14. In the present invention, since the heat medium branching portion base mat piece 20 in which the pipe connecting portions 13 and 14 are present is a very small member, only the portion thereof is not affected without affecting the cost and cushioning properties during walking. Can be replaced with a foamed synthetic resin having a high foaming ratio which is difficult to bend. This is preferable because the durability of the pipe connecting portions 13 and 14 can be improved. In this case, the expansion ratio of the foamed synthetic resin used as the heat medium branch part base mat piece 20 varies depending on the material of the heat medium branch block, but is usually 2 to 50 times, preferably from the viewpoint of lightness and cost. 5 to 30 times. For example, when the heat medium branch block 10 is made of metal, the expansion ratio is preferably about 30 times, and when it is made of resin, the expansion ratio is preferably about 10 times.

  The width of the opening of the groove formed in each base mat piece is preferably the same as the outer diameter of the pipe 50 or slightly larger than this. The shape of the groove is usually U-shaped or U-shaped in cross section cut at right angles to the extending direction. From the viewpoint of heat transfer from the pipe 50 to the floor surface and workability when the pipe 50 is embedded. Is preferably U-shaped. The depth of the groove is preferably the same as the outer diameter of the pipe 50 from the viewpoint of heat transfer.

  When the heating medium is hot water, the piping 50 inserted into the groove is usually a flexible tube, and specifically includes a crosslinked polyethylene tube, a polybutene tube, a copper tube, and the like. The diameter varies depending on conditions such as installation location and structure, but a tube having an outer diameter of about 7.2 mm and an inner diameter of about 5 mm is generally used.

  A thin metal plate is further laminated on the base mat 100 into which the pipe 50 is inserted. The metal thin plate has a function of transferring the heat of the heat medium flowing through the pipe 50 embedded in the base mat 100 to the floor surface, and includes aluminum foil, tin foil, stainless steel foil, copper foil, and the like. Of these, aluminum foil is preferred from the viewpoints of ease of production and cost. When the thickness is too thin, the strength becomes insufficient. On the other hand, when the thickness is too thick, the floor heating mat becomes heavy and costs are increased. Therefore, a thickness in the range of 2 to 200 μm is usually used.

  Although the present invention has been described with reference to the most practical and preferred embodiments at the present time, the invention is limited to the embodiments disclosed herein. However, the present invention can be changed as appropriate without departing from the spirit or concept of the invention that can be read from the claims and the entire specification, and a floor heating mat with such a change is also included in the technical scope of the present invention. Must be understood as.

It is an laying example of the base material mat 100 part of the floor heating mat which has the heat-medium branching block 10 of this invention. FIG. 2 is an enlarged view of a base material mat piece 30 in the vicinity of a heat medium branch in FIG. 1. It is an example of the heat medium branch part base material mat piece 20. It is an enlarged view of the heat-medium branch part base material mat piece 20c of FIG. It is an enlarged view of the heat-medium branch part base material mat piece 20b of FIG. This is an example of laying a base mat 200 portion of a floor heating mat having a conventional heating medium branch block 10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 10b, 10c Heat medium branch block 11 Outward connection pipe connection part 12 Return connection pipe connection part 13 Outward pipe connection part 14 Return pipe connection part 20, 20a, 20b, 20c Heat medium branch part mat pieces 21, 21 ', 31 Groove 22, 32 Notch 30 Heat medium branch vicinity mat piece 40 Base mat piece 50 Piping 100, 200 Base mat

Claims (4)

A base material mat made of foamed synthetic resin in which a groove for fitting a pipe for circulating a heat medium is engraved, a pipe embedded in the groove, and one or more piping circuits of the base material mat A heating medium branching block for branching a heating medium, and a floor heating mat comprising a thin metal plate laminated on the base mat, wherein the base mat includes a plurality of base mat pieces connected together. One of the base mat pieces is further formed of a heat medium branch base mat piece provided with a notch for arranging the heat medium branch block, and the heat medium. A heating medium branching vicinity base mat piece having a notch formed so as to surround the branching part base mat piece, and the curved portion of the groove is formed in the heating medium branching base mat piece. Characterized by being provided , Floor heating mat. A groove for fitting a pipe for circulating the heat medium is cut from both ends of the notch for arranging the heat medium branch block to an end of the heat medium branch base mat piece. The floor heating mat according to claim 1, wherein the floor heating mat is provided. The said heat-medium branch part base material mat piece has the groove | channel for inserting piping for distribute | circulating a heat medium by which at least one both ends were open | released, The Claim 1 or 2 characterized by the above-mentioned. Floor heating mat. The heating medium branching portion base mat piece, the heating medium branching vicinity portion base mat piece, and the other base mat pieces are connected to each other, and the pipe ends inserted into the grooves are connected to each other. The floor heating mat according to any one of claims 1 to 3, wherein one of the base mats is formed.

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