JP2006145135A - Cooling/heating medium distribution header and cooling/heating panel using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooling/heating medium distribution header for reducing the pressure loss of cooling/heating medium and improving its work efficiency, and to provide a cooling/heating panel using the same. <P>SOLUTION: The cooling/heating medium distribution header 20 has flow paths 21, 21a, 21b, 22, 22a, 22b inside in different flowing directions. One flow path 21 intersects the other flow path 22a in a plan view. Inside a cylindrical body 25 passing through one flow path 21 in the intersecting direction and having an outer diameter smaller than the inner diameter of one flow path 21, the other flow path 22a exists at an intersecting portion 26. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cooling / heating medium distribution header and a cooling / heating panel using the same. Specifically, the present invention relates to a cooling medium circulation header capable of suppressing pressure loss of a cooling medium supplied to the inside, and an air conditioning panel using the same.

  As a conventional cooling / heating panel, a boiler or a compressor, which is a cooling medium supply source, and a cooling / heating panel in which a cooling / heating medium circulation pipe is embedded are connected via a cooling / heating medium distribution header, and the cooling / heating medium is circulated to be cooled / cooled. Things are known.

This cooling medium distribution header is
(1) a header body having a flow path through which a cooling medium flows;
(2) a cooling medium receiving pipe connection port connected to the flow path and capable of receiving a cooling medium from a cooling medium supply source via a cooling medium receiving pipe (outward pipe);
(3) a cooling medium discharge pipe connection port connected to the flow path and capable of discharging the cooling medium to the cooling medium supply source via a cooling medium return pipe (return pipe);
(4) a cooling medium distribution pipe connection port connected to the flow path and connected to a cooling medium distribution pipe of the cooling and heating panel;
(5) A cooling medium circulation return pipe connection port connected to the flow path and connected to the cooling medium circulation return pipe of the cooling / heating panel, and a coupling pipe joint is attached to each connection port.

As such a structure of the cooling medium circulation header, the structure shown in FIG. 7 is disclosed in the specification of Patent Document 1, which is a patent application previously filed by the applicant of the present application. In addition, FIG. 7 has simplified and shown all the coupling pipe joints in the header currently disclosed by patent document 1, and has abbreviate | omitted and shown the code | symbol attached | subjected other than the header and the flow path. FIG. 7A is a front view (however, the inside is shown through), and FIG. 7B is a view showing a section taken along the arrow VIIB-VIIB in FIG.
Japanese Patent Application No. 2004-208649

  However, in the conventional header 70 according to Patent Document 1, a plurality of flow passages 77a, 77b, 77c through which the cooling medium supplied through the forward pipe flows and the cooling medium discharged through the return pipe are contained therein. The plurality of flow paths 78a, 78b, and 78c through which the gas flows are formed in a form that intersects three-dimensionally without intersecting in plan view, and thus it is difficult to increase the diameter of these flow paths. Here, the cooling medium supplied to the header is press-fitted from the cooling medium supply source using a pump or the like, and is circulated via each cooling medium circulation forward / return pipe in the cooling / heating panel. It is desirable that pressure loss does not occur as much as possible in the cooling medium after leaving the pump. In particular, when supplying a cooling medium to a cooling / heating medium circulation forward / return pipe in a medium-area or large-area cooling / heating panel, two or more systems are used from the viewpoint of suppressing the occurrence of a temperature difference in the panel. It is preferable to supply the cooling medium via the forward / return pipe for circulating the cooling medium. In such a case, it is necessary to provide a header having a plurality of flow paths therein. However, in the conventional header 70, since it is difficult to increase the flow path diameter, there is a problem that the pressure loss of the cooling medium is likely to occur. Further, since the conventional header 70 has a complicated shape in which a plurality of flow paths intersect three-dimensionally, there is a problem that processing is troublesome and processing costs are easily increased.

  Then, this invention makes it a subject to provide the cooling-heat-medium distribution header which can reduce the pressure loss of a cooling-heat medium, and can improve workability, and an air-conditioning panel using the same.

  As a result of intensive studies, the inventor crossed one flow path and another flow path in mutually different flow directions in a plan view in the header, and at the crossing portion, than the inner diameter of the one flow path. The present invention has been completed by finding that the above problem can be solved by using the inside of a cylindrical body having a small outer diameter as another flow path.

  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.

1st this invention is a cooling-medium circulation header (20) provided with the flow path (21, 21a, 21b, 22, 22a, 22b) of a different flow direction inside, Comprising: One flow path (21) is another Than the inner diameter of the one channel (21) passing through the one channel (21) in the intersecting direction at the intersection (26). The above-mentioned problem is solved by the cooling medium circulating header (20) characterized in that the inside of the cylindrical body (25) having a small outer diameter serves as another flow path (22a).
Here, in the present invention and the invention described below, one end of each flow path (21, 21a, 21b, 22, 22a, 22b) in the header (20) is open to the end face of the header (20). Shall. In the present invention and the invention described below, the outer diameter of the cylindrical body (25) and the inner diameter of the other channel (22a) are substantially the same, and the cylindrical body (25) ) It is assumed that it is fitted in the gap without any gap. That is, the cooling medium flowing in the one flow path (21) and the cooling medium flowing in the other flow path (22a) are substantially completely separated by the cylindrical body (25), and both of them intersect with each other. There is no mixing in part (26).

  In the first aspect of the present invention, the cross-sectional area (x + y) of the portion that is narrowed by penetrating the cylindrical body (25) and has the narrowest cross section with the normal direction in the axial direction of the one flow path (21). ) And the area (z) of the circumferential section of the cylindrical body by the plane whose normal direction is the axial direction of the cylindrical body (25) are preferably substantially the same.

  The second aspect of the present invention is an air conditioning panel (15) attached to the panel (15) so that the cooling medium distribution header (20) according to the first aspect of the present invention is accommodated in the panel (15) plane. 15) to solve the above problem.

  According to the first aspect of the present invention, in the form in which the cooling medium flowing in each flow channel can flow without mixing, the other flow channel (21) is formed so as to penetrate the side surface of the one flow channel (21) in one direction. 22a) is formed, each flow path (21, 21a, 21b, 22, 22a, 22b) including these flow paths (21, 22a) can be formed with a larger diameter than before. Become. Therefore, as a result of being able to increase the flow rate per unit time of the cooling medium flowing in the flow path (21, 21a, 21b, 22, 22a, 22b) formed in the header (20) than before, It becomes possible to provide a cooling medium circulating header that can reduce the pressure loss of the cooling medium. Further, according to the first aspect of the present invention, there is no need to three-dimensionally intersect the flow paths formed inside the header (20), and each flow path (21, 21a, 21b, 22, 22a, 22b in the same plane). ) Can be formed. Therefore, the workability of the header (20) can be improved. Therefore, according to 1st this invention, it becomes possible to provide the cooling-heat-medium distribution header (20) which can reduce the pressure loss of a cooling-heat medium and can improve workability.

  In the first aspect of the present invention, the inner diameter cross-sectional area “z” of the cylindrical body (25) disposed at the intersecting portion (26) in the header (20) and the cylindrical body (25) penetrate therethrough. As a result, the cross-sectional area “x + y” of the one channel (21) through which the cooling medium can pass is substantially the same (z). If ≈x + y), it is possible to make the flow rate per unit time of the cooling medium flowing in the one flow path (21) and the cylindrical body (25) substantially the same. That is, since the flow rate of the cooling medium flowing in each flow path (21, 21a, 21b, 22, 22a, 22b) of the header (20) can be made constant, it is supplied to the header (20). It becomes possible to further reduce the pressure loss of the cooling medium.

  According to 2nd this invention, the cooling-heat-medium distribution | circulation header (20) which can reduce the pressure loss of a cooling-heat medium and can improve workability is attached to an air-conditioning panel (15). Therefore, it is possible to provide the air conditioning panel (15) that can improve the air conditioning efficiency and can be easily manufactured.

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

  FIG. 1 is a conceptual diagram showing an air conditioning system provided with an air conditioning panel according to the present invention. In the cooling / heating system shown in the figure, the cooling / heating medium heated or cooled in the cooling / heating medium supply source 11 (for example, a boiler, a refrigerator compressor, etc.) is supplied to the cooling / heating panel 15 via the cooling / heating medium forward pipe 12a and the header. . The cooling / heating panel 15 is arranged so that the cooling medium circulation pipe meanders over the entire surface. The air conditioning panel 15 is disposed, for example, in a room of a house and plays a role of maintaining the room temperature at a predetermined comfortable temperature by exchanging heat between the cooling medium supplied by heating or cooling and the room air. Plays. By circulating in the cooling / heating panel 15, the cooling medium that has been subjected to heat exchange with room air and has been cooled or heated is returned to the header via the downstream side of the cooling medium distribution pipe. Further, it is returned to the cooling medium supply source 11 through the cooling medium return pipe 12b, is heated and cooled, and is again supplied to the circulation.

  Here, the cooling medium supply source 11 may be one that cools and heats the cooling medium. As a heating device, there is usually a gas or a fossil fuel such as kerosene that is used as a heat source (so-called boiler), a heater that converts electromagnetic energy into heat, or a large-scale power generation facility or incineration facility nearby. In some cases, waste heat generated therefrom may be used. As a cooling device, it is usually possible to use a cooler with an electrically driven compressor, but if there is a storage facility for LNG or natural gas in the vicinity, it is also possible to use the cold heat It is.

  In the present invention, the cooling medium forward pipe 12a and the cooling medium return pipe 12b connecting the cooling medium supply source 11 and the header are not particularly limited, and are the same as those used in a normal cooling and heating system. For example, a synthetic resin tube, a metal tube whose inner surface and / or outer surface is coated with a synthetic resin, or the like can be used.

  The portion of the air conditioning panel and the header will be described in detail later. In addition, although this invention is applicable to both air_conditioning | cooling and heating, the following description demonstrates the form which applied this invention to floor heating. Therefore, in the following, the cooling medium supply source 11, the cooling medium return pipe 12a, the cooling medium return pipe 12b, and the cooling / heating panel 15 are appropriately replaced with the heat source unit 11, the heating medium return pipe 12a, the heating medium return pipe 12b, and the heating. This is referred to as panel 15. In particular, the cooling medium distribution header and the cooling / heating panel using the same according to the present invention have a remarkable effect when applied to a floor heating system of a flooring type.

  FIG. 2 is a schematic view showing a cooling medium circulation header for an air conditioning panel according to the first embodiment of the present invention. (A) is a front view (however, the inside is shown through), (B) is a cross-sectional view taken along the line IIB-IIB in (A), and (C) is a cross-sectional view taken along the line IIC-IIC in (A). FIG.

The cooling / heating panel circulating header (hereinafter simply referred to as “header”) 20 shown in the figure is substantially parallel to the left and right side surfaces of the header 20 in the drawing and is formed substantially horizontally and The second main flow path 22, the first sub-flow paths 21 a and 21 b branched substantially at right angles from the main flow path 21 and formed substantially horizontal, and the main flow path 22 branched substantially at right angles and formed substantially horizontal. Second sub-channels 22a and 22b. In the header 20 according to the present embodiment, the main flow path 21 and the second sub flow path 22a intersect each other in plan view (see FIG. 2B), and at the intersection 26, the sub flow path 22a. The inside of the cylindrical body 25 having an outer peripheral surface shape substantially the same as the inner peripheral surface shape of the sub-flow channel 22a that is fitted into the sub-flow channel 22a forms the sub-flow channel 22a. The heat medium and the heat medium in the sub-channel 22a are separated. In the header 20, the inner diameters of the main flow path 21 and the main flow path 22 are substantially the same, and the inner diameters of the sub flow paths 21a, 21b, 22a, and 22b are also substantially the same. Further, in the header 20, the flow paths 21, 22, 21a, 21b, 22a, and 22b are formed in a substantially cylindrical shape.
By configuring the header 20 according to the present embodiment in this way, it is not necessary to three-dimensionally intersect the flow paths formed in the header. Therefore, according to the header 20 according to the present embodiment, since it is possible to form a flow path having a larger diameter than the conventional one in the header, it is a case where foreign matters such as scale are mixed in the header flow path. However, it becomes possible to make the header 20 in which the circulation failure of the heat medium hardly occurs.

Also, as shown in FIG. 2, in the header 20, a connecting pipe joint is connected to the end of each flow path,
A heat medium receiving connection pipe joint 24 that can receive a heat medium from the heat source device 11 via the heat medium forward pipe 12a is provided at the end of the main flow path 21.
At the end of the main flow path 22, a heat medium discharge connecting pipe joint 27 that allows the heat source to be discharged by opening the heat medium return pipe 12 b to the heat source device 11
At the ends of the sub-channels 21a and 21b, there are heat medium distribution forward connection pipe joints 28a and 28b connected to the heat medium distribution forward pipe of the heating panel 15,
Heat medium circulation return connection pipe joints 29a and 29b connected to the heat medium circulation return pipe of the heating panel 15 are connected to the end portions of the sub flow paths 22a and 22b, respectively. In other words, the header 20 supplies a heat medium to the heating panel 15 via two sub-channels 21a and 21b (hereinafter, sometimes referred to as “outward system sub-channel”), and two Since the heat medium supplied from the heating panel is discharged to the heat source unit 11 through the auxiliary flow paths 22a and 22b (hereinafter, sometimes referred to as “return system auxiliary flow path”), the two systems It becomes a form applied to a heating panel provided with the piping for heat medium distribution of. As shown in FIG. 2, the forward sub-channel and the return sub-channel formed in the header 20 according to the present embodiment are arranged in a staggered manner. By arranging the forward system sub-channel and the return system sub-channel in this way, it becomes easy to suppress temperature unevenness in the heating panel surface.

  In the header 20 according to the present embodiment, the inner circumferential surface cross-sectional area “z” (see FIG. 2B) of the cylindrical body 25 and the portion where the space that can flow through the main flow path 21 at the intersection 26 is minimized. The cross-sectional area “x + y” (see FIG. 2C) of the fluid in FIG. With this configuration, the flow rate per unit time of the heat medium supplied in the main flow path 21 and the flow rate per unit time of the heat medium supplied in the sub flow path 22a can be made substantially the same. It becomes possible. Here, as described above, in the header 20 according to the present embodiment, the inner diameter of each main flow path is substantially the same, and the inner diameter of each sub-flow path is also substantially the same. Therefore, with the above configuration, the flow rate per unit time of the heat medium supplied to each flow path formed in the header 20 can be made substantially the same. As a result, the heat medium in the header 20 It is possible to further reduce the pressure loss. As described above, the flow path formed in the header 20 according to the present embodiment has a substantially cylindrical shape, and thus has an outer peripheral surface shape that is substantially the same shape as the inner peripheral surface shape of the sub-flow channel 22a. The outer peripheral surface of the cylindrical body 25 is also substantially circular. That is, since the outer peripheral surface of the cylindrical body 25 has a smooth streamline shape, the heat medium frictional resistance by the cylindrical body 25 is small in the main channel 21. Therefore, it becomes easy to set it as the header 20 which can reduce the pressure loss of a heat medium by setting it as this form.

  In addition, as described above, the main channels 21 and 22 and the sub channels 21a, 21b, 22a, and 22b are formed substantially horizontally, and the main channel 21, the sub channels 21a, 21b, and the main channel 22 are also formed. And the angle | corner which subchannel 22a, 22b makes is a substantially right angle. Therefore, unlike the conventional header, in the header 20 according to the present invention, it is not necessary to carry out oblique hole processing when forming the flow path therein. Therefore, the header 20 according to the present invention can be easily processed, and the flow path length in the header 20 can be shortened by providing a substantially horizontal flow path. That is, according to the header 20, it is possible to reduce the pressure loss of the heat medium by shortening the internal flow path length.

  In addition, in the header 20 concerning this embodiment, if the cylindrical body 25 (subchannel 22a) has penetrated the inside of the main channel 21 in the cross direction, the aspect will not be specifically limited, The main flow path 21 and the cylindrical body 25 (sub-flow path 22a) are arranged so that the axial center of the cylindrical body 25 (sub-flow path 22a) and the axial center of the main flow path 21 exist on substantially the same horizontal plane. It is preferable. With this arrangement, the amount of the heat medium that can flow above the cylindrical body 25 and the amount of the heat medium that can flow below the cylindrical body 25 in the main flow path 21 of the intersection 26 are substantially the same. Therefore, it becomes easier to further reduce the pressure loss of the heat medium in the header 20.

Below, the manufacturing method of the header 20 concerning this embodiment is demonstrated.
When manufacturing the header 20, first, a block material having a predetermined outer diameter (for example, 45 mm × 45 mm × about 12 mm thickness) is prepared, and a machine tool such as an NC machine is used, for example, from the side of the block material. Holes for the main channels 21 and 22 having an inner diameter of about 7 mmφ and holes for the sub-channels 21 a, 21 b, 22 a, and 22 b having an inner diameter of about 5 mmφ are formed. Next, the sub-flow channel 22a and the cylindrical body 25 are provided in accordance with JIS B0401-1 "Dimensional tolerance and fitting method-Part 1: Tolerance, dimensional difference and fitting basis". The cylindrical body 25 processed so as to have a dimensional difference is press-fitted into the secondary flow path 22a, and the heat medium flowing inside the cylindrical body 25 (the secondary flow path 22a) and the main flow path 21 at the intersecting portion 26. The cylindrical body 25 is arranged so that the heat medium flowing through the pipe is almost completely divided by the cylindrical body 25. Thereafter, a connecting pipe joint is attached to the end of each sub-flow path by electric welding or the like, and a detachable connecting pipe joint is attached to the end of each main flow path or a connecting pipe joint is attached by electric welding or the like. Thus, the header 20 can be obtained.

  Next, with reference to FIG. 3, attachment of the cooling medium circulation header 20 for the cooling / heating panel of the present invention to the heating panel 15 will be described. As shown in FIG. 3, the heating panel 15 is partially cut away. It arrange | positions so that the cooling-heat-medium circulation header 20 for an air conditioning panel may enter in the notch part. It arrange | positions so that the surface of the heating panel 15 and the surface of the cooling-heat-medium distribution | circulation header 20 for air-conditioning / heating panels may become a substantially identical surface, and each connection pipe joint 24,27,28a, 28b, 29a and 29b is also the header 20. It is attached from the side in the plane formed by the main body from the side. Therefore, since the heating panel 15 and the cooling medium circulation header 20 for the cooling / heating panel are housed in the same plane, a large-scale construction such as processing the floor surface is not required when laying on the existing floor surface. .

  For the sake of convenience, in the above description, the header 20 in which the two forward sub-channels and the return sub-channel are formed has been described. However, the forward sub-channel and the return system that can be formed in the header according to the present invention. The number of systems of the sub-flow path is not limited to two systems, and can be set to the number of systems according to the number of systems provided in the heating panel to be attached. Here, if the number of forward and return system sub-channels formed in the header increases, the number of sub-channels and the intersections increases accordingly, but the header according to the present invention is processed. Since it is excellent in performance, even a header in which a forward sub-channel and a return sub-channel having more than two systems are formed can be easily manufactured. FIG. 4 schematically shows a front view of the cooling medium circulation header for an air-conditioning panel of the present invention according to the second embodiment as an example of a header in which each of the above-mentioned channels having more than two systems is formed. In the following description of FIG. 4, the aspect of the cylindrical body that is fitted into each of the main flow path and the sub flow path formed in the header and the sub flow path that forms the intersection is the first embodiment. Since these are the same as those described above, a detailed description thereof will be omitted.

  In FIG. 4, the header 30 in which the four forward sub-flow channels and the return sub-flow channel are formed is omitted, and each connection pipe joint connected to the header is omitted, and the header 30 is formed inside the header 30. The flow path is shown through. The header 30 according to the second embodiment includes a first main channel 31 and a second main channel 32, and first sub-channels 31a, 31b, 31c, 31d formed by branching from the main channels. And second sub-channels 32a, 32b, 32c, and 32d. Inside the header 30 having four systems of outgoing sub-channels (31a, 31b, 31c, 31d) and return-system sub-channels (32a, 32b, 32c, 32d), a main channel 31 and a sub-channel 32c are provided. In the first intersection 36a, the main channel 31 and the sub-channel 32a form a second intersection 36b, and the main channel 32 and the sub-channel 31b form a third intersection 36c. And cylindrical body 35a, 35b, 35c is engage | inserted by each subflow path 32c, 32a, 31b which forms these cross | intersection parts 36a, 36b, 36c. By configuring the header 30 in this way, it is possible to obtain the header 30 that can be attached to a heating panel including four systems of heat medium supply / discharge piping.

  In the above description, the connection pipe joint connected to the end of the main flow path and the connection pipe joint connected to the end of the sub flow path are described in the form of a header arranged on substantially the same plane. The header according to the present invention is not limited to such a form. As another form example that the header according to the present invention may be provided, the connecting pipe joint connected to the end of the main flow path and the connecting pipe joint connected to the end of the sub flow path are arranged on different planes. And the like. Such a header is schematically shown in FIG.

  FIG. 5 is a schematic view showing a header of the present invention according to the third embodiment. (A) is a front view (however, the inside is shown through), (B) is a side view (however, the inside is shown through), and (C) is VC- in (A). It is a figure showing VC arrow cross section.

As shown in FIG. 5, the header 50 according to the third embodiment includes a surface on which the coupling pipe joints 54 and 57 connected to the main flow paths 51 and 52 are located, and the sub flow paths 51 a, 51 b, 52 a, and 52 b. The surfaces on which the connecting pipe joints 58a, 58b, 59a, and 59b connected to the side are substantially orthogonal. And the main flow path 51 and the subflow path 52a cross | intersect by planar view in the crossing part 56, The inner peripheral surface of the said subflow path 52a fitted in the subflow path 52a in the said crossing part 56 The inside of the cylindrical body 55 having substantially the same outer peripheral surface shape as the shape forms a sub-flow channel 52a, and the heat transfer medium in the main flow channel 51 and the heat medium in the sub-flow channel 52a are divided by the cylindrical body 55. (See FIG. 5C). In the header 50, the inner diameters of the main flow path 51 and the main flow path 52 are substantially the same, and the inner diameters of the sub flow paths 51a, 51b, 52a, and 52b are also substantially the same. Further, in the header 50, the flow paths 51, 52, 51a, 51b, 52a, and 52b are formed in a substantially cylindrical shape. Further, as shown in FIG. 5B, in the header 50, a part of the holes formed when the main flow path 51 and the main flow path 52 are formed is blocked, and the heat medium efficiently circulates in these main flow paths. The blind plugs 53a, 53b are applied to make it possible.
By configuring the header 50 according to the present embodiment in this way, in addition to the effects obtained by the header 20, for example, a heating medium supplied into a pipe laid in a direction from the lower side to the upper side in the vertical direction Can be provided as a header 50 which can be supplied to piping in a heating panel laid substantially horizontally.

  For convenience, in the above description, a header in which a substantially cylindrical flow path is formed has been described. However, in the present invention, the cross-sectional shape by a plane whose normal direction is the axial direction of the flow path is limited to a substantially circular shape. Instead, other shapes may be used as long as the pressure loss of the cooling medium supplied into the header does not increase or hardly increases, such as an ellipse.

  In the present invention, the diameter of the main flow path and the sub flow path formed inside the header can be appropriately set according to the thickness of the header and the strength required for the header after the flow path formation, for example, The diameter of the flow path in the connecting pipe joint connected to the flow path end formed in the header can be made approximately the same. When the thickness of the header is about 12 mm, a flow path having a diameter of about 3 mm is formed inside the conventional header. However, in the header according to the present invention, a flow path having a diameter of about 10 mm is provided inside the header. Can be formed. As described above, in the header according to the present invention, the amount of the cooling medium flowing through the sub-flow channel (cylindrical body) forming the intersecting portion and the amount of the cooling medium flowing through the main channel forming the intersecting portion are It is preferable that they are substantially the same. Therefore, when the inner diameter of the main channel is R1, the inner diameter R2 of the cylindrical body is preferably about (1 / √2) × R1, for example, and the inner diameter of the sub-channel is a cylinder having such an inner diameter. It is preferable that the inner diameter of the shaped body is press-fit by an interference fit.

  In addition, the thickness of the cylindrical body that is press-fitted into the sub-flow path that forms the intersecting portion is not particularly limited, and the pressure loss of the cooling medium flowing through the inside can be reduced as much as possible. If the thickness of the cooling medium in the sub-channel and the cooling medium in the main channel can be separated, for example, the thickness can be easily processed. On the other hand, the length of the cylindrical body is a length that allows the main flow channel and the sub flow channel to be separated in the above-described mode, and obstructs the flow channel formed in the header (if it is too long, There is a possibility that the sub-flow path may be blocked at the end of the flow path).

  Furthermore, in this invention, the material which comprises the cooling-heat-medium distribution | circulation headers 20 and 30 for an air conditioning panel is not specifically limited. Metals, synthetic resins, ceramics, and the like can be used as long as they have predetermined heat resistance, strength, and temporal durability. Among these, it is preferable to be made of metal from the viewpoint of keeping a high balance between strength and heat durability, and from the viewpoint of workability and corrosion resistance of the main flow path and the sub flow path formed inside, phosphor bronze and the like A copper alloy or the like is more preferable. On the other hand, when the thickness of the heating panel 15 is thin and the thicknesses of the headers 20 and 30 are restricted, it is recommended to use stainless steel such as SUS304 or SUS430 even if the workability is somewhat sacrificed.

  In addition, if the cylindrical body fitted in the sub-flow channel that forms the intersecting portion in the header is made of a material that does not easily transfer charges between the sub-flow channel, the constituent material is particularly It is not limited. In the case where the header provided with the sub channel is made of a copper alloy, it is preferable that the cylindrical body is made of stainless steel or ceramic such as SUS316 or SUS304 that hardly causes charge transfer with the copper alloy. . Among these, from the viewpoint of suppressing corrosion resistance and the above charge transfer, it is more preferable to use ceramic.

Using the header (example) according to the present invention shown in FIG. 2 and the conventional header (comparative example) shown in FIG. 7, the pressure loss of the cooling medium inside the header and the flow rate of the cooling medium supplied to the header I investigated the relationship with. The results of Examples and Comparative Examples are shown in FIG. In FIG. 6, the horizontal axis and the vertical axis represent the flow rate (L / min) of the cooling medium supplied to the header according to the example or the comparative example, and the relative value of the pressure loss. This relative value is obtained when the pressure loss measured when a 2 L / min cooling medium is supplied to the header according to the comparative example is 1 (reference value) and the cooling medium is supplied to the header according to the example and the comparative example. It is calculated by dividing the pressure loss measured in the above by the reference value. In FIG. 6, the solid line represents the result of the example, and the broken line represents the result of the comparative example. In this example and comparative example, water was supplied to the header and the pressure loss of the water was investigated. Further, the diameter of the main flow path formed inside the header according to the embodiment is 7 mm, the diameter of the sub flow path is 5 mm, and the cylindrical body fitted in the sub flow path that forms the intersection in the header. The inner diameter was 4 mm and the outer diameter was 5 mm. On the other hand, the diameter of the flow path formed inside the header according to the comparative example was 3 mm.
FIG. 6 confirms that the header according to the present invention can reduce the pressure loss by about 20% compared to the conventional header. Therefore, in the cooling / heating panel provided with the header, it is possible to improve the supply efficiency of the cooling medium.

  While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not 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 cooling medium distribution header and such a cooling / heating panel using the same are also included in the present invention. It should be understood as encompassed within the technical scope.

It is a conceptual diagram which shows the air conditioning system provided with the panel for air conditioning of this invention. It is the schematic which shows the cooling-medium circulation header for the air-conditioning panel of this invention concerning 1st Embodiment. It is a figure which shows the attachment of the cooling-heat-medium distribution | circulation header to an air conditioning panel. It is the schematic which shows the cooling-medium circulation header for the air-conditioning panel of this invention concerning 2nd Embodiment. It is the schematic which shows the cooling-medium circulation header for the air-conditioning panel of this invention concerning 3rd Embodiment. It is a figure which shows the relationship between a flow volume and a pressure loss. It is the schematic which shows the conventional cooling-heat-medium distribution header for an air conditioning panel.

Explanation of symbols

15 Heating / cooling panel 20 Cooling medium distribution header 21, 22 Main flow path (one flow path)
21a, 21b, 22a, 22b Subchannel (other channels)
25 Cylindrical body 26 Intersection (intersection)

Claims (3)

A cooling medium distribution header having flow paths in different flow directions inside,
One channel intersects with other channels in plan view,
In the crossing portion, the inside of the cylindrical body having an outer diameter smaller than the inner diameter of the one flow path that penetrates the one flow path in the crossing direction is the other flow path. Cooling medium distribution header characterized by A cross-sectional area of a portion that is narrowed by penetrating the cylindrical body and has a narrowest cross section with the axial direction of the one flow path as the normal line, and a surface having the axial direction of the cylindrical body as the normal direction The cooling-medium circulation header according to claim 1, wherein an area of a cross-section of the circumferential surface of the cylindrical body is substantially the same. A cooling / heating panel attached to the panel so that the cooling medium circulation header according to claim 1 or 2 is accommodated in the panel surface.

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