JP6506229B2 - Radiant panel - Google Patents

Description

  The present invention relates to a radiation panel that performs cooling and heating by radiation and a radiation heating and cooling system using the same, and more particularly to a radiation panel that is excellent in condensation suppression and cleaning during cooling and a radiation heating and cooling system using the radiation panel.

  Heating and cooling systems using heat radiation are widely used in various buildings, but because condensation tends to occur on the radiation panel during cooling in summer, this results in the generation of mold and equipment failure, or the reduction of radiation capacity. It was an easy problem.

  As the radiation panel has a larger radiation surface area, the radiation capacity increases because the cooling and heating load per unit area is reduced. In addition, the radiation temperature approaches room temperature, resulting in a mild heating and cooling environment. At the time of cooling, the temperature near the panel is less likely to fall below the dew point, which makes it easier to suppress condensation. A general radiation panel is assembled by brazing using a burner or the like to join parts such as heat transfer tubes in a specialized factory, because it is necessary to ensure the reliability of bonding that can withstand temperature changes and to ensure good thermal conductivity. It is done. Therefore, simply increasing the surface area increases the size of the panel, resulting in a considerable weight. It will be difficult to carry in and install in a building. Or, if it is not made large, the number of panels increases and it can not be installed in the actual space. For this reason, although attempts have been made to secure the surface area by making the radiation surface into a complicated shape having asperities, the cleaning property of the asperities is poor, and dust and dirt are easily accumulated during operation. Furthermore, even if condensation occurs partially, the dust and the like becomes extremely dirty including water, and the cooling efficiency is lowered and mold is easily generated.

  Also, as means for preventing or reducing the occurrence of dew condensation other than increasing the radiation area, for example, one that tries to prevent dew condensation by devising the material configuration and coating of the surface that is particularly difficult when dew condensation occurs (for example, Patent documents 1 to 3) and those which try to prevent condensation by blowing air adjusted through a heat exchanger to the panel surface (for example, see patent documents 4 to 5), etc. There is.

  However, in the former, the efficiency of heating and cooling is significantly reduced on the surface subjected to the countermeasure, and condensation still occurs on the other surfaces not subjected to the countermeasure. Further, in the latter case, the system becomes complicated and the equipment cost and running cost increase, and in practice, it is easy to cause uneven air flow, and it is difficult to uniformly suppress condensation over the entire surface of the radiation panel. Therefore, there is also a proposal to provide a blowout for blowing out conditioned air whose temperature and humidity have been adjusted by penetrating the front and back of the radiation panel (see, for example, Patent Document 6). At the same time, since the blowout port is easily clogged with dust and dirt and it is difficult to clean the blowout port, air flow is partially stopped during system operation, causing problems such as dew condensation and mold generation.

JP 2012-87975 A JP, 2008-209048, A JP 10-8972 A JP, 2013-139949, A JP 2008-14555 A Unexamined-Japanese-Patent No. 2015-105787

  An object of the present invention is to provide a radiation panel which is excellent in the cleanability of the radiation surface, hardly causes performance deterioration due to dirt, and can suppress condensation, and a radiation heating and cooling system using the same. Furthermore, it is an object of the present invention to provide a radiation panel which is easy to be large-sized because it has good portability to the site and ease of installation, and a radiation heating and cooling system using the same.

  The present invention is a radiation panel comprising: a radiation member capable of exchanging heat with the outside by heat radiation; and a heat transfer tube capable of exchanging heat with the radiation member, the heat transfer medium flowing through the inside, the heat transfer tube comprising A long metal extrusion having a plurality of folds substantially parallel to the flow direction of the heat transfer medium on the inner surface, and the radiation member has a smooth curved surface or smooth interface with the external world. A long metal extrusion molded article comprising: a radiation fin which is a flat; and a storage portion which can heat and conduct at least one of the heat transfer tubes in the longitudinal direction and which can be stored. A plurality of unit panels stored in the storage portion of the radiation member, and the heat transfer tubes connected to each other stored in the plurality of unit panels are dry bonding using caulking.

  Here, it is preferable that the heat transferable contact between the heat transfer tube and the storage part is mechanical contact due to gravity or metal elasticity of the radiation member. Moreover, it is preferable that the said metal is aluminum or aluminum alloy. Moreover, it is preferable that the thickness of the thinnest part of the perpendicular | vertical cross section with respect to the elongate direction of the said heat-transfer part is more than the thickness which can endure the pressure of the said crimping. Moreover, it is preferable that the said thickness exceeds 2 mm. Further, it is preferable that the heat transfer tubes are connected to each other via a flow passage pipe having an end portion that can be crimped and connected. Preferably, the heat transfer tube of any of the radiation panels described above is a radiant cooling and heating system in which the heat transfer medium is fluidly connected to a heat source.

  A second aspect of the invention is a method of manufacturing a radiation panel including a radiation member which exchanges heat with the outside by heat radiation, and a heat transfer tube in which a heat transfer medium flows through the inside so that the radiation member can exchange heat with the radiation member. The heat transfer tube is provided with a plurality of fins on the inner surface substantially parallel to the flow direction of the heat transfer medium, and the metal member is extrusion-molded into a long length, and the radiation member has a smooth interface with the outside Metal extrusion molding in the form of a long strip comprising: a radiation fin which is a curved surface or a smooth flat surface; and a storage portion which can thermally transfer at least one of the heat transfer tubes and penetrate through in the longitudinal direction. A radiation panel using a plurality of unit panels in which a heat transfer tube is stored in the storage portion of the radiation member in a penetrating manner and connecting the heat transfer tubes stored in the plurality of unit panels by dry bonding using caulking Manufacturing method.

  The radiation panel of the present invention is easy to manufacture and large in size, and is easy to install in a building because it is easy to carry and handle in the case of large size. Since it is easy to make large, it is easy to reduce the heat load per unit area, and it becomes possible to perform a mild operation in which condensation does not easily occur during operation. The cleanability of the panel surface is good, dust and dirt are less likely to be accumulated, and the occurrence of mold is also greatly suppressed along with the fact that condensation is less likely to occur. In addition, since the whole of the radiation panel is configured only by mechanical contact or dry connection, there is no need for a flame such as a burner for assembling or installing the radiation panel, and the panel can be assembled at the installation site. It is also easy to adjust the length and the like of the heat transfer tube on site. In addition, it is possible to assemble in a short time while securing reliability of joining of heat transfer tubes, and troubles due to medium leakage and the like are less likely to occur during operation. Furthermore, when installing a large radiation panel in a building, the length, installation interval, and number of unit panels of the radiation panel can be designed arbitrarily, and various spaces with different indoor volumes, floor areas, wall areas, and heating and cooling loads. On the other hand, the radiation area can be designed arbitrarily, the degree of freedom of the installation position is also large, and it can be designed appropriately according to the shape and size of the room. The heating and cooling system using this radiation panel is relatively simple in construction and does not require expensive equipment such as heat exchangers, dehumidifiers and external air conditioners, so installation and operation can be performed at low cost. become.

FIG. 1 is a perspective view of an example of a heat transfer tube 10. FIG. 2 is a cross-sectional view of the heat transfer tube 10 taken along line AA ′. FIG. 3 is a perspective view of an example of the radiation member 20. FIG. 4 is a perspective view showing the heat transfer tube 10 stored in the storage portion 21 of the radiation member 20. As shown in FIG. FIG. 5 is a perspective view showing the heat transfer tube 10 housed in a radiation member 30 which is another example of the radiation member. FIG. 6 is a perspective view showing the heat transfer tube 10 housed in a radiation member 40 which is another example of the radiation member. FIG. 7 is a view schematically showing the relationship of the attachment position of each member before the radiation panel is assembled. FIG. 8 is a view schematically showing an example after assembly of the radiation panel.

  The present invention will be specifically described below with reference to the drawings. The radiation panel of the present invention comprises a radiation member capable of exchanging heat with the outside by heat radiation, and a heat transfer tube capable of heat exchange between the radiation member and the heat transfer medium flowing therethrough.

  The outside world refers to the surrounding environment of the radiation panel, and the range covered by heating and cooling by the radiation heating and cooling system. The particularly desirable outside world is the indoor environment of a building. It is because it is suitable for the radiation panel installed in a building. The building may be a detached house, an apartment, an office, a hospital, a hotel, a factory, or the like. In particular, it is desirable that the size of the internal space is limited and it is a building that is difficult for cranes and the like to use, and that a building that requires heating and cooling inside when it is used is desirable. Also, the building may be new or existing. In particular, although it is suitable when installing a radiant heating and cooling system in an existing building later, even in the case of a new building, there is a case where the heating and heating system is installed after a door etc. is attached in the building process. As it is mostly, it is as good as the existing buildings.

  The radiation panel comprises a long heat transfer tube for circulating the heat transfer medium to and from the heat source. The heat transfer tube has a hollow flow passage along which the heat transfer medium can flow inside along the long direction, performs heat exchange with the heat transfer medium, and further the radiation member with which the heat transfer tube is in contact It has the function of heat exchange. That is, the longitudinal direction of the heat transfer tube coincides with the flow direction of the heat transfer medium.

  The heat transfer tube is made of metal having excellent thermal conductivity in order to ensure high heat exchangeability and to withstand the crimping pressure described later. As the metal, a metal having good thermal conductivity, good formability and light weight and low cost as much as possible is preferable, copper, aluminum or aluminum alloy is preferable, and in particular, aluminum or aluminum alloy preferable.

  A plurality of fins are provided on the surface of the hollow flow passage inside the heat transfer tube, along a direction substantially parallel to the flow direction of the heat transfer medium. This is to withstand the crimping pressure while improving the heat exchange efficiency between the heat transfer medium and the heat transfer tube. With the substantially parallel direction, the direction of the mountain of the fold may be provided in parallel with the flow direction, or may be gradually rotated in a spiral like a spiral groove cut inside the barrel. Is also good meaning. The former has an advantage that the heat transfer tube can be easily manufactured and the flow resistance of the heat transfer medium is small, and the latter has an advantage that the heat conduction efficiency is improved since the heat transfer medium is slightly agitated as it flows. Which method to use may be determined as appropriate based on the cost and the required performance.

  With regard to the number of folds, the surface area increases and the heat exchange efficiency improves as the number is larger, but the smaller the number, the easier the preparation and the smaller the flow resistance of the heat transfer medium, and the lower the cost. The number and size of the folds may be appropriately determined in consideration of these, but from the viewpoint of resistance against the caulking pressure described later, for example, in the case of heating and cooling of a typical room such as a house, the folds The number is preferably at least three, and more preferably six or more and ten or less. The same applies to the size (height and thickness) of the folds.

  The arrangement of the folds in the longitudinal direction cross section of the heat transfer tube is preferably arranged so as to be point-symmetrical with respect to the central axis of the heat transfer tube. This arrangement increases the resistance to the crimping pressure, and makes it possible to withstand a temperature change of the heat transfer medium and to obtain a reliable connection with no leak.

  The outer shape of the cross section perpendicular to the longitudinal direction of the heat transfer tube is not particularly limited, but when connecting by caulking, a highly reliable connection that does not cause leakage of the heat transfer medium due to uniform caulking pressure is realized at low cost For this reason, it is desirable that the outer shape is circular. The outer diameter in the case where the outer shape is circular may be appropriately designed from the heat capacity and the pump power necessary for air conditioning and heating, but for example, in the case of air conditioning of a typical room such as a house, it is 15 mm or more and 30 mm or less Is more preferably 20 mm or more and 25 mm or less, and most preferably 21 mm or more and 23 mm or less.

  Similarly, the thickness of the thinnest portion of the heat transfer tube is preferably as thin as possible from the viewpoint of reducing the weight of the entire radiation panel and suppressing the cost, but on the other hand Is preferred. If deformation occurs, the crimping pressure will not be uniform, and the medium will easily leak due to the temperature change of the heat transfer medium. For example, the thickness of the thinnest portion of a heat transfer tube for indoor heating and cooling having a circular cross section and an outer diameter of 21-23 mm is preferably more than 2 mm, more preferably 2.5 mm or more, and further preferably 2.8 mm or more It is preferable to do. The upper limit of the thickness may be appropriately determined from the viewpoint of reducing the weight of the heat transfer tube while securing the flow of the heat transfer medium.

  The heat transfer tube is an extruded product produced by an extrusion method using a mold. The extrusion molding method is a method suitable for producing a long product having various cross-sectional shapes at low cost, and the extrusion molding method is not particularly limited as long as a usual method is used.

  The end of the heat transfer tube may be in the as-cut shape as described in FIG. 1 and does not need to be processed into a special shape for connection with other tubes. Thus, when the radiation panel is installed at the installation site, the length of the heat transfer tube can be easily adjusted according to the variation of various sizes and shapes of the installation site by preparing in advance a heat transfer pipe longer than the designed size. Becomes possible. When the heat transfer tube is cut, it is desirable to insulate the cut surface using an insulating spray or a coating method to prevent corrosion of the heat transfer tube.

  Here, the heat transfer tube will be more specifically described using FIGS. 1 and 2. FIG. 1 is a perspective view showing an example of a heat transfer tube. The heat transfer tube 10 is a long object which is long in the vertical direction toward the drawing, and in order to make it easy to understand in the drawing, the length in the vertical direction is relatively shortened and schematically drawn. Inside the heat transfer tube 10, a heat transfer medium flow passage 11 is provided to penetrate along the longitudinal direction. The AA 'cross section of this heat transfer tube 10 is shown in FIG. In the heat transfer tube 10, eight fins are provided so as to protrude on the inner surface of the flow passage to increase the area of the inner surface. As a result, the heat exchange efficiency per heat transfer pipe unit length between the heat transfer medium and the heat transfer pipe is improved, and it is possible to withstand the caulking pressure.

  The thinnest part thickness in the AA ′ cross section of the heat transfer tube 10 is shown as the thinnest part thickness 13 in the figure. If the thickness is insufficient, the pressure can not be resisted by the caulking pressure and deformation is likely to occur, so that leakage may easily occur and the reliability of the connection may be impaired.

  Next, the radiation panel is provided with a long radiation member in addition to the above-mentioned heat transfer tube, and the radiation member houses a radiation fin which exchanges heat with the outside by heat radiation, and the heat transfer tube in the long direction And a heat-transfer pipe and a storage unit for heat exchange.

  In the radiation fin, a radiation surface which is an interface with the external world is a smooth curved surface or a smooth plane. The term "smooth" as used herein means a smooth flat surface or a curved surface in which there are no fine concave or convex portions, and even if there are fine concave or convex portions, there are no corners or deep concaves that make dust and dirt difficult to catch. Such radiation fins make it difficult for dust and dirt to come in contact with the radiation surface, and have good cleaning performance. By smoothing the radiation surface, the radiation area per unit vertical and horizontal length radiation surface can not be increased. Therefore, although it is necessary to increase the size of the radiation panel to make condensation difficult to occur, condensation does not easily occur. There is also a big merit that becomes difficult to occur.

  The length in the longitudinal direction of the radiation fin may be appropriately determined from the area required for the radiation panel, but, for example, when the radiation panel is installed on the indoor wall surface, the length from the ceiling to the floor surface is the upper limit Therefore, in order to secure the required radiation area, a plurality of radiation members are used in combination. The same applies to installation on ceilings and floors.

  The storage section has a function of storing the heat transfer tube in the long direction, exchanging heat with the heat transfer tube, and further transferring the heat to the radiation fin. As for the storage part, at least one heat transfer tube may be stored in one radiation member, so it is sufficient if there is at least one storage part, but a plurality of storage parts are provided in one radiation member, The heat pipe may be accommodated.

  The length in the longitudinal direction of the storage portion is made shorter than the heat transfer tube to be stored. The length of the storage section in the longitudinal direction is a length such that the heat transfer pipe penetrates the storage section in the longitudinal direction, and the both ends of the heat transfer pipe come out from both ends of the storage section. The below-mentioned crimp connection pipe is connected to the both ends of a heat pipe.

  In order to ensure high heat exchange, the radiating member is made of metal having excellent thermal conductivity. As the metal, a metal having good thermal conductivity, good formability and light weight and low cost as much as possible is preferable, copper, aluminum or aluminum alloy is preferable, and in particular, aluminum or aluminum alloy preferable. The radiation member and the heat transfer tube may be a combination that does not cause a potential difference due to dissimilar metals, and it is desirable that they be composed of the same metal material.

  The radiation member, like the heat transfer tube, is an extrusion-molded product produced by an extrusion molding method using a mold. Thus, the radiation fin and the housing portion are integrally formed. The extrusion molding method may be a conventional method and is not particularly limited.

  Here, an example of the radiation member will be specifically described with reference to FIG. FIG. 3 is a perspective view showing an example of the radiation member. The radiation member 20 is a long object which is long in the vertical direction in the drawing, and in order to make it easy to understand in the drawing, the length in the longitudinal direction is shortened and schematically drawn. The radiation member 20 is composed of four radiation fins 22 and two storage portions 21 and is a deformed tube having a substantially wedge-shaped cross section. The two storage portions 21 face each other to constitute one heat transfer tube storage space. The cross-sectional shape of the radiation member can be variously modified as needed, and other examples will be described with reference to FIGS. 4 and 5 described later.

  Next, the unit panel will be described. The unit panel is configured by inserting and storing at least one heat transfer tube in the longitudinal direction in the storage portion of one radiation member. Storage of the heat transfer tube in the radiation member substantially fixes the heat transfer tube to the storage portion by gravity or mechanical contact by metal elasticity of the radiation member. Here, substantially fixing by mechanical contact means that it is not necessary to use fixing means such as adhesion such as brazing and bolting. For example, when the heat transfer pipe storage space of the storage part is larger than the size of the heat transfer pipe, the heat transfer pipe may be simply inserted into the storage part and left to stand according to gravity. Such a storage type is suitable when the radiation panel constitutes a ceiling or a floor surface, and the installation work of the radiation panel is simplified. When the heat transfer pipe storage space of the storage part is substantially the same as the size of the heat transfer pipe, the heat transfer pipe may be directly pushed into the storage space and fixed by the metal elasticity of the storage part. Even if the heat transfer tube storage space is slightly smaller than the size of the heat transfer tube, the heat transfer tube may be pushed in so as to slightly expand the storage portion, and the heat transfer tube may be fixed also by the metal elasticity of the storage portion. Such a storage type is suitable whether the radiation panel is a ceiling, a floor or a wall, but it is particularly suitable to be used for a wall.

  In any case, the heat conductive connection between the heat transfer tube and the radiation member is extremely simple as compared with the fixed type such as the conventional brazing, and the assembly operation and the installation operation are greatly simplified. In addition, it has been unexpectedly found that the required and sufficient heat conduction occurs between the heat transfer tube and the radiation member in such a manner.

  The size and shape of the unit panel may be appropriately selected in accordance with the ceiling height and width of the space to be installed, the design of the room, and the like.

  An example of such a unit panel will be described with reference to FIGS. FIG. 4 is a perspective view showing the unit panel 1 in which the heat transfer tube 10 is stored in the storage portion 21 of the radiation member 20 of FIG. The heat transfer tube 10 and the radiation member 20 are long members extending in the vertical direction in the drawing, and only the upper end portion of the unit panel 1 is schematically depicted in FIG. The same applies to FIGS. 5 to 6 below. The heat transfer pipe 10 is pushed in and stored in the heat transfer pipe storage space slightly smaller than the heat transfer pipe 10 by being sandwiched between the two storage parts 21, and the unit panel 1 is substantially fixed by the metal elasticity of the radiation member 20 Example. The example of the unit panel shown in FIG. 4 is an example suitable for installing on a ceiling like a ceiling louver, installing on a flat wall, or installing separately from a wall like an object or partition. is there.

  FIG. 5 shows a radiation member 30 having a shape in which four radiation fins 31 having a cross section of 1⁄4 circle are added centering on a cylindrical storage portion 32 so that the cross section becomes a ⊃ × ⊂ shape; FIG. 6 is a perspective view showing an upper end portion of a unit panel 2 formed of a heat transfer tube 10 stored in a portion 32. The unit panel 2 is an example in which the inner diameter of the housing portion 32 is substantially the same as the outer diameter of the heat transfer tube 10, and the heat transfer tube is substantially fixed by the metal elasticity of the radiation member. The unit panel example shown in FIG. 5 is an example suitable for installation on a flat wall surface or installation separately from a wall like an object or partition.

  FIG. 6 is a perspective view showing the upper end portion of the radiation member 40 to which the flat radiation fin 41 and the support leg 43 are added facing each other with the cylindrical storage portion 42 at the center. The unit panel 3 is an example in which the inner diameter of the housing portion 42 is substantially the same as the outer diameter of the heat transfer tube 10, and the heat transfer tube is substantially fixed by the metal elasticity of the radiation member. The radiation member 40 is a form suitable for use in applications that constitute a flat surface such as a ceiling, a floor surface, and a wall surface.

  A plurality of unit panels as illustrated in FIGS. 4 to 6 are combined to constitute a radiation panel. By combining a plurality of unit panels, it is possible to secure the radiation area required for the radiation panel which is less likely to cause condensation. The combination of unit panels may be a combination of unit panels of the same type alone, or may be a combination of unit panels of different types according to the shape and design of the place where the radiation panel is installed. The same applies to the size and arrangement of a plurality of unit panels, and the size can be freely designed according to the situation of the installation place, and the arrangement can be freely designed according to the shape and size of the installation place. At that time, the unit panels may be arranged in parallel or in series. When using a unit panel to form a ceiling surface, a floor surface, or a wall surface, it is preferable to arrange in parallel to form a flat surface.

  In order to complete the radiation panel, both ends of the heat transfer tube which came out from the both ends of each radiation member of a plurality of unit panels arranged in the installation place are connected by flow connection using a dry connection using caulking. It may be connected to each other via a tube. The dry connection using caulking as used herein refers to connection by plastic deformation of a part of a heat transfer pipe or a connection part of a heat transfer pipe to be connected, and, for example, the connection part covers the entire circumference of a pipe end and has an inner diameter Insert the end of the pipe into a metal ring slightly larger than the outer diameter of the pipe, compress the metal ring with a dedicated hydraulic tool and plastically deform the metal ring and crimp it to the pipe surface, or the inner surface of a similarly shaped metal ring The resistance in the insertion direction of the pipe is small, but the resistance in the reverse direction is large (equivalent to the hook in the hook) provided on the entire circumference by caulking pressure generated by pushing the end of the pipe The connection etc. which made the surface of the pipe plastically deformed slightly are raised. The two pipes are mechanically connected, for example, by using a caulking connection pipe or the like described later provided with such metal rings at both ends. Although the former is called a press type and the cost is low, it is necessary to cut the pipe to release the connection once it is connected, while the latter is called a one-touch type, and the pipe is cut by using a dedicated tool It may be possible to release the connection without doing so, and it is easy to repair or change the panel. As an example of the connecting pipe using the former metal ring, trade name Morco Joint (trademark) (manufactured by Bencan Co., Ltd.) is exemplified, and as an example of the connecting pipe using the latter metal ring, trade name EG joint ( Trademark (made by Bencan Co., Ltd.) is mentioned.

  The dry connection of the heat transfer tube eliminates the need for a burner such as a conventional wet connection for the wet connection, and facilitates the assembly work and the tube connection work at the installation site of the radiation panel. Furthermore, among the various types of dry connection, particularly when connecting pipes by caulking, it is not necessary to make the end of the heat transfer pipe a special shape for connection, and it is possible to adjust the length of the heat transfer pipe at the installation site In addition, it has been found that it is possible to resist the swelling / shrinkage due to the temperature change of the heat transfer medium, and to obtain high reliability with less leakage of the medium, while using a relatively low cost and simple connection method. The dry connection by caulking is preferably performed by caulking the whole connection, but caulking is performed for the major part of the majority of the connection portion, and the remaining special shaped end, the end connected to an external heat source, etc. Other dry connections such as screws, flanges, etc. may be used.

  Here, the channel tube has various shapes for changing or branching the direction of the channel, such as a U-shaped tube, an L-shaped tube, a T-shaped tube or a comb-shaped branch tube, and the heat transfer fluid It is a relatively short tube that is flowable and has two or more heat transfer fluid ports. In addition, it is also possible to connect heat-exchanger tubes only by the below-mentioned caulking connection pipe | tube, without using a flow-path pipe | tube for convenience of arrangement | positioning of a unit panel.

  The connection of the pipes by means of caulking is easy to carry out using caulking connection pipes. The caulking connection pipe is, for example, a metal short pipe whose both ends are a female type, and both ends of the female type are metal rings connectable by caulking. It is a metal member of a short pipe which can dry-connect a pipe while securing. Insert the end of the heat transfer pipe into one end of the caulking connection pipe, and then insert the appropriate flow path pipe into the other end through the caulking connection pipe, and perform the caulking process so that the heat transfer medium does not leak Configure the flow path of the medium.

  In the case of using the caulking connection pipe, the whole of the caulking process may be performed at the installation site of the radiation panel, but the flow path pipe and the caulking connection pipe are connected in advance. The caulking connection pipe may be connected. This makes it possible to reduce the load of the crimping process at the installation site while allowing the length adjustment of the heat transfer pipe at the installation site.

  Moreover, it is also possible to perform connection of the pipe using caulking without using the caulking connection pipe. For that purpose, it is sufficient to use a flow path pipe in which an end portion to be connected to the heat transfer pipe is formed in advance in a metal ring which can be crimped and connected. When such a flow path pipe is manufactured at a factory, a metal ring may be provided in advance so as to be a female end which can be connected by caulking to the end. By using such a flow path pipe, although the manufacturing cost of the flow path pipe is increased, the need for caulking and connecting the flow path pipe and the caulking connection pipe is eliminated, and the length of the heat transfer pipe can be adjusted at the installation site However, it is only necessary to connect the heat transfer pipe and the flow path pipe by caulking processing, which has the merit of significantly reducing the load of the radiation panel assembly work at the installation site.

  The heat transfer medium may be configured to flow all of the unit panels in series by using a caulking connection pipe or various flow pipes, so that the heat transfer medium flows in parallel. It may be configured to flow in series, and may be configured to flow partially in parallel and partially in parallel, and may be selected as appropriate.

  The example of the attachment position of the member which comprises a radiation | emission panel is demonstrated using FIG. FIG. 7 is a view schematically showing an example in which four unit panels 3 are arranged in parallel to each other to constitute a radiation panel. The caulking connection pipes 53 are disposed at both ends of the heat transfer pipe 10 coming out of both ends of the radiation member 40. Both ends of the caulking connection pipe 53 are female. Furthermore, on the opposite side of the caulking connection pipe 53, a flow path pipe exemplified by the U-shaped pipe 51 and the L-shaped pipe 52 is disposed. Thus, when the radiation panel is completed, a flow path in which the heat transfer medium flows in series in each unit panel is formed.

  FIG. 8 schematically shows a front view of the radiation panel 1 completed by inserting the members arranged as shown in FIG. 7 into the corresponding portions and performing the crimping process 60 at each connection portion. The unconnected both ends of the L-shaped tube 52 of the radiation panel 1 are connected to the heat source 4 not described to form a circulation flow path of the heat transfer medium.

  The radiation panel can be used as a unit as a wall, ceiling or floor of a building, can be embedded in an existing wall, etc., can be installed in front of a wall, or can be installed in a ceiling It is also possible to use as a louver type radiation panel. The radiation panel can form a radiation cooling and heating system by connecting the unconnected flow path end to a heat source, and the heat transfer medium can circulate and flow inside the heat transfer tube to perform radiation cooling and heating.

  It can be used for radiant heating and cooling within a building.

Claims (7)

A radiation panel comprising: a radiation member capable of exchanging heat with the outside world by heat radiation; and a heat transfer tube capable of heat exchange between the radiation member and the radiation member, the heat transfer medium flowing therethrough.
The heat transfer tube is a long metal extrusion having a plurality of folds substantially parallel to the flow direction of the heat transfer medium on the inner surface thereof,
The radiation member may be a radiation fin having a smooth curved surface or flat surface at the interface with the outside, and a storage portion capable of thermally conducting at least one of the heat transfer tubes and storing the heat transfer tube in the longitudinal direction. A long metal extrusion with
A plurality of unit panels in which the heat transfer tube is stored in the storage portion of the radiation member;
Further, the heat transfer pipe interconnections accommodated in the plurality of unit panels are dry bonding using caulking, and the thickness of the thinnest portion of the vertical cross section with respect to the longitudinal direction of the heat transfer pipe and the folds are the caulking A radiation panel characterized in that it withstands the pressure of   The radiation panel according to claim 1, wherein the heat transferable contact between the heat transfer tube and the housing portion is mechanical contact by gravity or metal elasticity of the radiation member. The radiation panel according to claim 1 or 2, wherein the metal is aluminum or an aluminum alloy.   The radiation panel according to any one of claims 1 to 3, wherein the thickness exceeds 2 mm. The radiation panel according to any one of claims 1 to 4 , wherein the heat transfer tubes are connected to each other via flow channels having caulked ends.   The radiation heat-conditioning system which connected the said heat exchanger tube of the radiation panel in any one of Claims 1-5 to the heat source which the said heat transfer medium can flow. A method of manufacturing a radiation panel, comprising: a radiation member that exchanges heat with the outside world by heat radiation; and a heat transfer tube in which a heat transfer medium flows through the interior to exchange heat with the radiation member,
The heat transfer tube is provided with a plurality of folds substantially parallel to the flow direction of the heat transfer medium on the inner surface, and the metal is extrusion-molded into a long length,
The radiation member may be a radiation fin having a smooth curved surface or flat surface at the interface with the outside, and a storage portion capable of thermally conducting at least one of the heat transfer tubes and storing the heat transfer tube in the longitudinal direction. And metal extrusion to a long, equipped with
Using a plurality of unit panels in which the heat transfer tubes are stored in the storage portion of the radiation member, and connecting the heat transfer tubes stored in the plurality of unit panels by dry bonding using caulking; Furthermore, the thickness of the thinnest portion of the cross section perpendicular to the longitudinal direction of the heat transfer portion and the folds can withstand the pressure of the caulking.

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