Radiation panel

Abstract

To provide a radiation panel capable of preventing dew condensation on a frame material.SOLUTION: A radiation panel 11 for circulating heat medium to the inside to perform cooling or heating, includes a plurality of radiators 20, a pair of header pipes 18, 19 arranged at both ends in the longitudinal direction of the plurality of radiators 20, closing members 30, 31 for closing both ends in the longitudinal direction of the pair of header pipes 18, 19, and a pair of frame materials 13 for supporting areas at both ends in the longitudinal direction of the pair of header pipes 18, 19. Between each of the header pipes 18, 19 and the frame material 13, heat insulation members 32a-32f are arranged each of which has lower heat conductivity than each of the header pipes 18, 19 and the frame material 13.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a radiant panel for heating and cooling an indoor facility. [Background technology]

[0002] In recent years, in light of the importance of temperature control in indoor facilities, including gymnasiums, radiant panels have come into use as heating and cooling devices that do not generate unnecessary drafts, can reduce noise caused by airflow, and can also reduce the emission of greenhouse gases, which are the main cause of global warming.

[0003] Such a radiation panel, as described in Patent Document 1, for example, comprises a pair of left and right vertical frames, a pair of upper and lower header pipes installed between the vertical frames, and a plurality of parallel radiators connected to the header pipes. The longitudinal ends of the header pipes are fixed to the vertical frames in a state where they are closed by blocking members. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-160314 Summary of the Invention [Problem to be solved by the invention]

[0005] When using air conditioning with such a radiant panel, a heat transfer medium flows through the header pipe, cooling the header pipe and the vertical frame connected to it. When condensation forms on the exposed surface of the vertical frame as a result of the cooling, the condensation can leak outside the radiant panel, creating a problem. Therefore, an object of the present disclosure is to provide a radiant panel that is less likely to cause condensation on its frame material. [Means for solving the problem]

[0006] A radiant panel according to one aspect of the present disclosure is a radiant panel that performs cooling or heating by circulating a heat medium inside, and includes a plurality of heat dissipating bodies, a pair of header pipes arranged at both longitudinal ends of the plurality of heat dissipating bodies, a blocking member that blocks both longitudinal ends of the pair of header pipes, and a pair of frame members that support both longitudinal ends of the pair of header pipes, and an insulating member having a lower thermal conductivity than the header pipes and the frame members is arranged between the header pipes and the frame members. [Effects of the Invention]

[0007] According to the present disclosure, since a heat insulating member is disposed between the header pipe and the frame material, heat is less likely to be transferred between the header pipe and the frame material. Therefore, even if the header pipe is cooled during air conditioning, heat is less likely to be lost from the frame material. Therefore, condensation is less likely to occur on the frame material. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing the configuration of a radiant air conditioning device. [Figure 2] FIG. 2 is a cross-sectional view of the radiation panel taken along line AA. [Figure 3] FIG. 1A is a perspective view of the upper blocking member before the heat insulating member is attached, and FIG. 1B is a perspective view of the upper blocking member after the heat insulating member is attached. [Figure 4] FIG. 2A is a perspective view of the upper header pipe before an upper closing member is attached, and FIG. 2B is a perspective view of the upper header pipe after an upper closing member has been attached. [Figure 5] 1A is a perspective view of the upper blocking member before the support member is attached thereto, and FIG. 1B is a perspective view of the upper blocking member after the support member is attached thereto. [Figure 6] This is an enlarged oblique view of the area around the upper blocking member before the vertical frame is attached. [Figure 7] FIG. 2A is a perspective view of the lower blocking member before the heat insulating member is attached, and FIG. 2B is a perspective view of the lower blocking member after the heat insulating member is attached. [Figure 8]FIG. 1A is a perspective view of the lower header pipe before a lower blocking member is attached thereto, and FIG. 1B is a perspective view of the lower header pipe after a lower blocking member has been attached thereto. [Figure 9] 1A is a perspective view of the lower blocking member before the support member is attached thereto, and FIG. 1B is a perspective view of the lower blocking member after the support member is attached thereto. [Figure 10] This is an enlarged oblique view of the area around the lower blocking member before the vertical frame is attached. [Figure 11] 10A and 10B are diagrams for explaining the condensation receiving portion and the drain pan, in which (a) is a view of the lower frame seen from diagonally above, and (b) is a view of the lower frame seen from diagonally below. [Figure 12] FIG. 10 is an enlarged perspective view of a portion near the drain pan before the push rivet is attached. [Figure 13] 10(a) is an AA end view of the radiating panel according to Modification 1, and FIG. 10(b) is an enlarged view of part A. FIG. [Figure 14] FIG. 10 is a view relating to Modification 2, illustrating a mode in which a heat insulating member is attached to an upper blocking member. DETAILED DESCRIPTION OF THE INVENTION

[0009] An embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 2, in the following description, the "front" of the radiant panel 11 refers to the surface that radiates radiant heat. The "rear" refers to the surface opposite to the front. The left-right direction as viewed from the front is referred to as the "left-right direction."

[0010] The radiant air-conditioning device 10 according to this embodiment is a device that performs cooling or heating by circulating a heat medium, and includes a radiant panel 11 and a heat source 50, as shown in FIG.

[0011] The radiant panel 11 is a panel for circulating the heat medium supplied from the heat source 50 inside and radiating cool or warm air. Any number of these radiant panels 11 can be lined up depending on the installation space. For example, multiple radiant panels 11 may be arranged along the wall surface of an indoor facility such as a gymnasium. This radiant panel 11 comprises a rectangular panel frame 12, a plurality of heat sinks 20 arranged within the panel frame 12, an upper header pipe 18 connected to the upper end of the heat sink 20, and a lower header pipe 19 connected to the lower end of the heat sink 20.

[0012] The panel frame 12 is formed by a pair of vertical frames 13 (left and right), an upper frame 14 installed on the upper ends of the vertical frames 13, and a lower frame 15 installed below the vertical frames 13. A back panel 17 having a heat reflector on its surface is attached to the rear of the panel frame 12, as shown in FIG. 2 . A gutter-shaped condensation receiving portion 40 is disposed below the heat sink 20 within the panel frame 12. In this embodiment, the condensation receiving portion 40 is formed on the upper surface of the lower frame 15 (described later). A drain pan 43 (described later) is disposed below the condensation receiving portion 40, and a drain pipe 49 for draining water is connected to the drain pan 43. Reinforcing cross beams 16 are attached to the rear of the panel frame 12.

[0013] The heat sink 20 is a long member for heat exchange using the heat of the heat medium. The heat sink 20 is made of a metal with high thermal conductivity, such as an aluminum alloy. The heat sink 20 has a uniform cross-sectional shape in the longitudinal direction, excluding some notches, and can be formed from an extruded material.

[0014] In this embodiment, 12 rows of heat dissipators 20 are arranged parallel to each other within the panel frame 12. The heat dissipators 20 are arranged so that their longitudinal direction is the up-down direction, and the upper and lower ends of the heat dissipators 20 are fixed to the upper fixing member 25 and the lower fixing member 26. Note that although the present embodiment has been described with the case where 12 rows of heat dissipators 20 are arranged, the number of heat dissipators 20 can be set arbitrarily according to the width dimension of the radiating panel 11. Furthermore, the heat dissipators 20 are not limited to being arranged so that their longitudinal direction is the up-down direction, and they may also be fixed within the panel frame 12 so that their longitudinal direction is horizontal.

[0015] 2, the heat dissipator 20 includes a pipe section 20a for allowing a heat medium to pass therethrough, and multiple heat dissipation fins 20c integral with the pipe section 20a. A heat medium flow passage that penetrates vertically is formed inside the pipe section 20a. The upper end of the pipe section 20a is inserted into the upper header pipe 18 and communicates with the interior of the upper header pipe 18, and the lower end is inserted into the lower header pipe 19 and communicates with the interior of the lower header pipe 19.

[0016] 2, a protective member 21 is attached to the front end of the heat dissipation body 20. The protective member 21 according to this embodiment is formed from an extruded aluminum alloy material. The protective member 21 is an elongated member having approximately the same overall length as the heat dissipation body 20, and is formed with the same cross-sectional shape over the entire length in the longitudinal direction.

[0017] The upper header pipe 18 is a straight pipe for circulating the heat transfer medium, and in this embodiment is formed from an extruded aluminum material. The upper header pipe 18 according to this embodiment has an outer shape formed in a substantially square prism shape. A hole (not shown) is provided on the lower surface of this upper header pipe 18 for inserting the pipe section 20a of the heat dissipation body 20. By inserting the upper ends of the pipe sections 20a of the heat dissipation body 20 into this hole, the upper header pipe 18 is connected across multiple heat dissipation bodies 20.

[0018] The lower header pipe 19 is a straight pipe for circulating the heat transfer medium, and in this embodiment is formed from an extruded aluminum material. The lower header pipe 19 according to this embodiment has an outer shape formed in a rectangular prism. A hole (not shown) is provided on the upper surface of this lower header pipe 19 for inserting the pipe section 20a of the heat dissipation body 20. By inserting the lower end of the pipe section 20a of the heat dissipation body 20 into this hole, the lower header pipe 19 is connected across multiple heat dissipation bodies 20.

[0019] The upper header pipe 18 and the lower header pipe 19 do not necessarily have to be formed from a single pipe. The upper header pipe 18 and the lower header pipe 19 may be formed by combining a plurality of pipes in accordance with the heat transfer medium flow path (in other words, the upper header pipe 18 and the lower header pipe 19 may be divided into a plurality of pipes).

[0020] The upper header pipe 18 described above is fixed to the heat sink 20 by an upper fixing member 25 as shown in FIG. 6. The upper fixing member 25 has a U-shaped groove 25a that opens downward and horizontal portions 25b that protrude horizontally from the front and back sides of the U-shaped groove 25a. The U-shaped groove 25a is formed so that the upper side of the upper header pipe 18 can be inserted into it, and the upper header pipe 18 is attached by pressing it down from above. At this time, the upper end of the heat sink 20 abuts against the lower surface of the horizontal portion 25b. A fastener hole is formed through the upper fixing member 25, and a fastener (e.g., a screw) is inserted from above the hole and screwed into a screw hole in the heat sink 20, thereby fixing the upper fixing member 25 to the upper end of the heat sink 20. Note that both longitudinal ends of the upper fixing member 25 may be fixed to the vertical frame 13 by fasteners such as screws.

[0021] The lower header pipe 19 described above is fixed to the heat sink 20 by a lower fixing member 26 as shown in FIG. 10. Although not specifically shown, the lower fixing member 26 has a cross-sectional shape similar to that of the upper fixing member 25 and includes a U-shaped groove that opens upward and horizontal portions that protrude horizontally from the front and back sides of the U-shaped groove. The U-shaped groove is formed so that the lower side of the lower header pipe 19 can be inserted into it, and the lower fixing member 26 is attached so that it presses down on the lower header pipe 19 from below. At this time, the lower end of the heat sink 20 abuts against the upper surface of the horizontal portion. A fastener hole is formed through the lower fixing member 26, and a fastener (such as a screw) is inserted from below into this hole and screwed into a screw hole in the heat sink 20, thereby fixing the lower fixing member 26 to the lower end of the heat sink 20.

[0022] In addition, both longitudinal ends of the upper header pipe 18 are blocked by upper blocking members 30, thereby sealing the heat transfer medium flowing inside the upper header pipe 18 so that it does not leak out.

[0023] The upper blocking member 30 according to this embodiment is a block-shaped member made of aluminum as shown in Fig. 3. This upper blocking member 30 is formed with a plurality of through holes 30a for attachment to the upper header pipe 18, and a plurality of side holes 30b for attachment of support members 33, which will be described later.

[0024] The through holes 30a are formed to penetrate the upper header pipe 18 in a direction parallel to the longitudinal direction of the upper header pipe 18. As shown in Fig. 4, the upper blocking member 30 is attached to the upper header pipe 18 by threading the blocking screws 35 that penetrate the through holes 30a into the end face of the upper header pipe 18.

[0025] The side holes 30b are formed on both sides of the upper blocking member 30 and extend in a direction perpendicular to the through holes 30a. The side holes 30b are pierced on the opposite sides so that support member fasteners 34, which will be described later, can be inserted therethrough.

[0026] Heat insulating members 32a, 32b, and 32c are attached to the surface of the upper blocking member 30. The heat insulating members 32a, 32b, and 32c are formed of a material with lower thermal conductivity than the upper header pipe 18 and the frame material (vertical frame 13), such as rubber or synthetic resin. The heat insulating members 32a, 32b, and 32c according to this embodiment are in sheet form and are attached to the surface of the upper blocking member 30. In this embodiment, as shown in FIG. 3, three types of heat insulating members 32a, 32b, and 32c are attached to the surface of the upper blocking member 30. Of these, the heat insulating member 32a is attached to the surface facing the end face of the upper header pipe 18. The heat insulating member 32b is attached to the side surface facing the side portion 33a of the support member 33, which will be described later. The heat insulating member 32c is attached in a U-shape from both side surfaces facing the side portions 33a of the support member 33, which will be described later, to the bottom surface facing the bottom portion 33b of the support member 33.

[0027] The heat insulating member 32a is formed to be larger than the inner diameter of the upper header pipe 18 so as to close the end of the upper header pipe 18. The heat insulating member 32a also has holes formed at positions corresponding to the through holes 30a. Therefore, when the upper blocking member 30 and the upper header pipe 18 are fixed together with the blocking screws 35, the blocking screws 35 penetrate the heat insulating member 32a, and the heat insulating member 32a is sandwiched between the upper blocking member 30 and the upper header pipe 18. Providing the heat insulating member 32a prevents direct contact between the upper blocking member 30 and the upper header pipe 18, thereby reducing the thermal conductivity between them. The heat insulating member 32a is made of an elastic material and also functions as a sealing material that closes the upper header pipe 18. Therefore, the heat insulating member 32a simultaneously provides both a heat insulating effect and a sealing effect (a function of preventing the heat medium from leaking from the gap between the upper blocking member 30 and the upper header pipe 18).

[0028] The heat insulating members 32b and 32c are provided to prevent direct contact between the upper closing member 30 and the support member 33 (described later). By disposing the heat insulating members 32b and 32c between the upper closing member 30 and the support member 33, the thermal conductivity between them can be reduced.

[0029] As described above, both longitudinal ends of the lower header pipe 19 are blocked by lower blocking members 31, thereby sealing the heat transfer medium circulating inside the lower header pipe 19 so that it does not leak out.

[0030] The lower blocking member 31 according to this embodiment is a block-shaped member made of aluminum as shown in Fig. 7. This lower blocking member 31 is formed with a plurality of through holes 31a for attachment to the lower header pipe 19, and a plurality of side holes 31b for attachment of support members 33, which will be described later.

[0031] The through holes 31a are formed to penetrate the lower header pipe 19 in parallel with the longitudinal direction thereof. As shown in Fig. 8 , the lower blocking member 31 is attached to the lower header pipe 19 by the blocking screws 35 that penetrate the through holes 31a being screwed into the end face of the lower header pipe 19.

[0032] The side holes 31b are formed on both sides of the lower blocking member 31 and extend in a direction perpendicular to the through-hole 31a. The side holes 31b are penetrated on the opposite side so that a support member fastener 34, which will be described later, can be inserted therethrough.

[0033] Heat insulating members 32d, 32e, and 32f are attached to the surface of the lower blocking member 31. The heat insulating members 32d, 32e, and 32f are formed of a material with lower thermal conductivity than the lower header pipe 19 and the frame material (vertical frame 13), such as rubber or synthetic resin. The heat insulating members 32d, 32e, and 32f according to this embodiment are in sheet form and are attached to the surface of the lower blocking member 31. In this embodiment, as shown in FIG. 7 , three types of heat insulating members 32d, 32e, and 32f are attached to the surface of the lower blocking member 31. Of these, the heat insulating member 32d is attached to the surface facing the end face of the lower header pipe 19. The heat insulating member 32e is attached in a U-shape to both side surfaces facing side portions 33a of a support member 33 (described later) and to the top surface. The heat insulating member 32f is attached in a U-shape from both side surfaces facing side portions 33a of the support member 33 described below to the bottom surface facing the bottom portion 33b of the support member 33.

[0034] The heat insulating member 32d is formed to be larger than the inner diameter of the lower header pipe 19 so as to close the end of the lower header pipe 19. The heat insulating member 32d also has holes formed at positions corresponding to the through holes 31a. Therefore, when the lower blocking member 31 and the lower header pipe 19 are fixed with the blocking screws 35, the blocking screws 35 penetrate the heat insulating member 32d, and the heat insulating member 32d is sandwiched between the lower blocking member 31 and the lower header pipe 19. Providing the heat insulating member 32d prevents direct contact between the lower blocking member 31 and the lower header pipe 19, thereby reducing the thermal conductivity between them. The heat insulating member 32d is made of an elastic material and also functions as a sealing material that closes the lower header pipe 19. Therefore, the heat insulating member 32d simultaneously provides both a heat insulating effect and a sealing effect (a function of preventing the heat medium from leaking from the gap between the lower blocking member 31 and the lower header pipe 19).

[0035] The heat insulating members 32e and 32f are provided to prevent direct contact between the lower blocking member 31 and the support member 33 (described later). By disposing the heat insulating members 32e and 32f between the lower blocking member 31 and the support member 33, the thermal conductivity between them can be reduced.

[0036] Incidentally, the above-mentioned upper header pipe 18 and lower header pipe 19 are supported at both ends by frame members (vertical frames 13), but in this embodiment, the upper header pipe 18 and lower header pipe 19 are not directly joined to the vertical frames 13. In other words, the upper header pipe 18 and lower header pipe 19 are fixed to the pair of vertical frames 13 via support members 33 as shown in Figures 6 and 10.

[0037] As shown in Figures 5 and 9, the support members 33 are attached so as to hold the upper blocking member 30 and the lower blocking member 31. The support members 33 are attached at a total of four locations: both longitudinal ends of the upper header pipe 18 and both longitudinal ends of the lower header pipe 19, but are positioned so as not to directly contact the upper header pipe 18 and the lower header pipe 19. The four support members 33 have the same shape. The support members 33 according to this embodiment are formed from extruded aluminum members.

[0038] The support member 33 has a generally U-shaped cross section and includes a pair of side portions 33a and a bottom portion 33b connecting the lower ends of the pair of side portions 33a. The insides of the pair of side portions 33a and the bottom portion 33b form a U-shaped retaining portion 33c that opens upward. The retaining portion 33c is configured to allow the upper blocking member 30 and the lower blocking member 31 to be inserted from above and retained. With the upper blocking member 30 or the lower blocking member 31 inserted into the retaining portion 33c, the support member 33 is fixed to the upper blocking member 30 or the lower blocking member 31 by attaching a support member fastener 34 (bolt). The support member fastener 34 (bolt) is inserted from one side portion 33a, penetrates a side hole 30b of the upper blocking member 30 or a side hole 31b of the lower blocking member 31, and is attached so that it penetrates to the other side portion 33a. The bolt is then fastened by tightening a nut to the tip. At this time, the above-mentioned sheet-like heat insulating members 32b, 32c, 32e, and 32f are interposed between the support member 33 and the upper blocking member 30 or the lower blocking member 31. Therefore, the support member 33 and the upper blocking member 30 or the lower blocking member 31 are fixed so as not to come into direct contact with each other.

[0039] A plurality of screw holes 33d are formed in this support member 33. In this embodiment, the screw holes 33d are formed in a total of four locations: near the upper ends of both side portions 33a and near the corners where the side portions 33a and the bottom portion 33b meet. These screw holes 33d are for fixing the support member 33 to the vertical frame 13. In other words, the support member 33 can be fixed to the vertical frame 13 by threading fasteners such as screws inserted from the outside of the vertical frame 13 into the screw holes 33d.

[0040] At this time, the support member 33 and the vertical frame 13 are in direct contact and firmly fixed, but the upper blocking member 30 and the lower blocking member 31 do not come into direct contact with the vertical frame 13. That is, the support member 33 fixed to the upper blocking member 30 protrudes laterally (towards the vertical frame 13) beyond the upper blocking member 30, as shown in Figure 6, and this protruding end is fixed to the vertical frame 13. Furthermore, the support member 33 fixed to the lower blocking member 31 protrudes laterally (towards the vertical frame 13) beyond the lower blocking member 31, as shown in Figure 10, and this protruding end is fixed to the vertical frame 13.

[0041] Next, a method for operating the radiant air conditioner 10 will be described. Here, we will explain the case where a liquid whose steady-state temperature is suitable for cooling (for example, 12°C ± 5°C) is used as the heat medium, such as antifreeze, specifically an antifreeze whose main component is ethylene glycol, contains a rust inhibitor, and has a concentration of 23 to 40% diluted with water. It is desirable to use a liquid whose steady-state temperature is suitable for cooling as the heat medium. If such a liquid is used, the heat medium only needs to be heated to the specified temperature during heating, and temperature can be adjusted using the heat exchanger 53 that only heats. However, the heat medium is not limited to such a liquid, and other liquids or gases may also be used.

[0042] The heat source 50 supplies the heat medium to the radiant panel 11. The heat source 50 is connected to a supply pipe 56, and is composed of a liquid supply source 51 and a heat exchanger 53 that heats the heat medium during heating via an on-off valve 52. In addition, a discharge pipe 57 is connected to the primary side of the heat exchanger 53 of the supply pipe 56 to form a circulation path. In this case, a filter 54 and a circulation pump 55 are installed in the discharge pipe 57.

[0043] In the radiant air conditioner 10 configured as described above, during cooling, the heat medium supplied from the liquid supply source 51 of the heat source 50 flows through a predetermined path through the lower header pipe 19, the heat radiator 20 (pipe section 20a), and the upper header pipe 18. The heat medium then flows to the supply piping 56 side by the circulation pump 55 after impurities have been removed by the filter 54, and is circulated and supplied. Note that when the heat medium is circulated and supplied, the heat medium may be replenished from the liquid supply source 51.

[0044] Furthermore, when the radiant panel 11 is used for heating, the heat medium supplied from the liquid supply source 51 is heated to a predetermined temperature (for example, 40°C) by the heat exchanger 53, and the heated heat medium is supplied to the radiant panel 11 in the same manner as described above.

[0045] By operating in this manner, heat is transferred from the pipe section 20a through which the heat medium flows to the heat dissipation fins 20c. By dissipating this heat in the front direction of the radiation panel 11, a cooling or heating effect by radiation can be obtained.

[0046] Incidentally, when the radiant air conditioner 10 is used for cooling, the panels are cooled by the heat medium flowing through the upper header pipe 18, the lower header pipe 19, and the radiator 20, which may cause condensation. Even in this case, in this embodiment, the frame materials (vertical frames 13) are less likely to be cooled because the heat insulating members 32a to 32f are arranged between the upper header pipe 18 and the lower header pipe 19 and the frame materials. This makes it possible to prevent condensation from occurring on the frame materials exposed to the outside.

[0047] Condensation that occurs inside the panel (upper header pipe 18, lower header pipe 19, radiator 20, etc.) can be received by a condensation receiving portion 40 as shown in Fig. 11(a). As shown in Fig. 10, the condensation receiving portion 40 according to this embodiment is formed using the upper surface of the lower frame 15, and is disposed below the lower header pipe 19. Pipe holes 40e are formed through the lower frame 15 to allow supply pipes 56 and discharge pipes 57 to pass therethrough.

[0048] The condensation receiving portion 40 according to this embodiment is a gutter-shaped portion extending horizontally in the left-right direction. It includes a pair of vertical walls 40a extending vertically from the front and rear sides. A groove for receiving water is formed between the pair of vertical walls 40a. The bottom of this groove consists of a front inclined portion 40b on the front side and a rear inclined portion 40c on the rear side. The front inclined portion 40b is slightly inclined so that the rear side is lower. The rear inclined portion 40c is also slightly inclined so that the front side is lower. The intersection of the front inclined portion 40b and the rear inclined portion 40c forms a valley shape with a lower center. A drain hole 40d for draining water is formed through a portion of the bottom of this valley shape. The drain hole 40d is formed as an elongated hole along the valley bottom. The inclination of the condensation receiving portion 40 allows condensation to collect in the center and then drain downward through the drain hole 40d.

[0049] A drain pan 43, as shown in Figure 11(b), is disposed below the drain hole 40d. The drain pan 43 is a tray that collects condensation and is made of synthetic resin in this embodiment. The drain pan 43 has a connection part 43a for connecting a drain pipe 49, and the condensation can be discharged to the outside through the drain pipe 49.

[0050] As shown in Fig. 12, the drain pan 43 is detachably attached to a drain pan support part 41. The drain pan support part 41 is a member fixed to the vertical frame 13 to hold the drain pan 43, and in this embodiment is an aluminum plate. The drain pan support part 41 includes a substantially horizontal bottom surface part 41a, a back surface part 41b that rises substantially vertically from the end of the back surface side of the bottom surface part 41a, a front surface part 41c that rises substantially vertically from the end of the front surface side of the bottom surface part 41a, and a side surface part 41e that faces the inner surface of the vertical frame 13. The drain pan support part 41 is fixed to the vertical frame 13 with fasteners such as screws, using fixing holes 41f formed in the side surface part 41e.

[0051] The drain pan support part 41 has a bottom surface 41a, a back surface 41b, and a front surface 41c that form a generally U-shaped receiving portion that opens upward. The drain pan 43 can be inserted and removed from this receiving portion from the side. The drain pan 43 placed in the receiving portion can be fixed to the drain pan support part 41 with a push rivet 45. That is, a rivet hole 41d is formed in the front surface 41c of the drain pan support part 41, through which the push rivet 45 can pass, and a hole is also formed in the drain pan 43 at a position that overlaps the rivet hole 41d. The drain pan 43 placed on the drain pan support part 41 can be fixed by attaching the push rivet 45 so that it passes through these two holes.

[0052] Because the push rivet 45 is detachable, the drain pan 43 can be removed from the drain pan support portion 41 by removing the push rivet 45. Specifically, the push rivet 45 comprises an expansion portion 46 and a pin 47, with the pin 47 attached so as to penetrate a cylindrical portion 46a of the expansion portion 46. When the pin 47 is pushed in, the cylindrical portion 46a expands and can be engaged with the rivet hole 41d. To remove the push rivet 45, a screwdriver or the like is inserted into the groove 46c formed in the flange portion 46b and the pin 47 is pulled out of the cylindrical portion 46a. This releases the expansion of the cylindrical portion 46a, allowing the push rivet 45 to be removed from the rivet hole 41d.

[0053] Making the drain pan 43 detachable in this way makes it easier to remove water and dirt accumulated in the drain pan 43, thereby improving maintainability. In the above-described embodiment, the drain pan 43 is fixed with the push rivet 45, but this is not limiting and the drain pan 43 may be fixed by other methods. For example, the drain pan 43 may be fixed using other fasteners such as screws, or the drain pan 43 may be fixed by a snap fit or the like without using a fastener.

[0054] As described above, this embodiment includes a plurality of heat dissipators 20, a pair of header pipes (upper header pipe 18 and lower header pipe 19) arranged at both longitudinal ends of the plurality of heat dissipators 20, blocking members (upper blocking member 30 and lower blocking member 31) that block both longitudinal ends of the pair of header pipes, and a pair of frame members (vertical frames 13) that support both longitudinal ends of the pair of header pipes. Between the header pipes and the frame members, heat insulating members 32a-32f, which have a lower thermal conductivity than the header pipes and the frame members, are arranged. With this configuration, because the heat insulating members 32a-32f are arranged between the header pipes and the frame members, heat is less likely to be transferred between the header pipes and the frame members. Therefore, even if the header pipes are cooled during cooling, heat is less likely to be lost from the frame members. Therefore, condensation is less likely to occur on the frame members.

[0055] Also, support members 33 that hold the blocking members are provided, and the header pipes are fixed to a pair of frame members via the support members 33, with heat insulating members 32b, 32c, 32e, and 32f arranged between the support members 33 and the blocking members. With this configuration, there is no need to fix the blocking members (header pipes) directly to the frame members. Furthermore, by using the support members 33, the distance from the heat medium (header pipes) to the frame members can be increased, making it less likely that heat will be transferred.

[0056] It is also possible to fix the closing member (header pipe) directly to the frame material and place a heat insulating member between the closing member and the frame material without using the support member 33. In this case as well, the heat insulating effect can be obtained.

[0057] Furthermore, heat insulating members 32a, 32d are disposed between the header pipe and the blocking member. With this configuration, the heat insulating members 32a, 32d not only prevent heat transfer but also function as sealing materials that block the header pipe.

[0058] Furthermore, by placing a heat insulating member between the blocking member and the frame member, and by placing a heat insulating member between the header pipe and the blocking member, two points in the heat conduction path are insulated. With this configuration, heat is less likely to be transmitted between the header pipe and the frame member than if only one of the two points were insulated.

[0059] Furthermore, the heat insulating members 32a to 32f are attached to the surface of the closing member. With this configuration, when assembling the radiant panel 11, the heat insulating members 32a to 32f can be attached to the closing member in advance, and this closing member can then be attached to the header pipe, which improves workability. If sheets with double-sided adhesive tape attached to one side are used for the heat insulating members 32a to 32f, they can be easily attached to the surface of the closing member.

[0060] The arrangement of the heat insulating member shown in this embodiment is merely an example. The heat insulating member may be arranged at least between the header pipe and the frame material (vertical frame 13) to reduce the thermal conductivity between them. For example, the heat insulating member does not have to be sheet-shaped, but may be block-shaped. Furthermore, the heat insulating member does not have to be attached to the blocking member, but may be sandwiched between members or completely cover the member.

[0061] Furthermore, in this embodiment, an example has been described in which the longitudinal direction of the header pipes is horizontal (an example in which a pair of header pipes is provided, one above the other), but this is not limiting. For example, the longitudinal direction of the header pipes may be vertical (a pair of header pipes may be provided, one on the left and one on the right). In this case, the pair of frame members supporting both longitudinal ends of the pair of header pipes are the upper frame 14 and the lower frame 15, rather than the vertical frame 13. Then, heat insulating members such as those described in this embodiment may be disposed between the header pipes and the upper frame 14 and the lower frame 15.

[0062] (Variation 1) In the above-described embodiment (FIG. 2), protective member 21 having a cross section shaped like a regular circular arc is used, but the shape of protective member 21 may be changed. For example, as shown in FIG. 13, protective member 21 having a cross section shaped like an elliptical arc may be used. An example in which protective member 21 having a cross section shaped like an elliptical arc will be described in detail below. Note that, except for the difference in the cross-sectional shape of protective member 21, this modified example can be similar to the above-described embodiment.

[0063] 13, a cushioning member 22 and a protective member 21 are attached to a protruding portion 20b at the tip of the heat sink 20. The cushioning member 22 and the protective member 21 are elongated members formed to have approximately the same length as the heat sink 20.

[0064] The buffer member 22 is a member that is fitted onto the protruding portion 20b at the tip of the heat dissipator 20 and attached. The buffer member 22 is made of a flexible material, such as EPDM. The material of the buffer member 22 is not limited to EPDM, and other rubbers or synthetic resin materials may also be used. It is desirable to form the buffer member 22 from a material that has a lower thermal conductivity than the heat dissipator 20.

[0065] The buffer member 22 has a substantially Ω-shaped cross section and includes a U-shaped portion 22a attached so as to cover the protruding portion 20b, and a pair of extending portions 22b extending in opposite directions from both ends of the U-shaped portion 22a. A recessed groove into which the protruding portion 20b can be press-fitted is formed inside the U-shaped portion 22a. The buffer member 22 is formed with the same cross-sectional shape over its entire length in the longitudinal direction. The protective member 21 is formed in a generally elliptical cylindrical shape having a hollow portion, and has a fitting portion 21a, a support surface 21b, and a curved surface 21c on its outer circumferential surface.

[0066] The fitting portion 21a is a recessed portion into which the U-shaped portion 22a of the buffer member 22 can be inserted. The fitting portion 21a is formed in a substantially U-shape so as to fit the outer shape of the U-shaped portion 22a.

[0067] The support surfaces 21b are flat surfaces formed on both sides of the fitting portion 21a, and the support surfaces 21b on both sides are formed flush. The support surfaces 21b come into contact with the extension portions 22b of the buffer member 22, thereby preventing the protection member 21 from wobbling.

[0068] The curved surface 21c is a C-shaped surface in a plan view, provided to connect the support surfaces 21b on both sides. This curved surface 21c is an elliptical arc with its major axis in the left-right direction in a plan view. When the protective member 21 is attached to the front of the heat sink 20, this curved surface 21c is exposed to the outside. In other words, when a ball or the like is thrown, it hits this curved surface 21c.

[0069] When the cushioning member 22 and the protective member 21 are attached to the protruding portion 20b of the heat sink 20, as shown in FIG. 13, the U-shaped portion 22a engages with the inside of the fitting portion 21a, and the extending portions 22b function as cushioning materials on both sides of the fitting portion 21a. That is, one surface (facing the front) of the extending portion 22b abuts against the support surface 21b of the protective member 21, and the other surface (facing the rear) abuts against the heat sink fins 20c of the heat sink 20. In this way, the protective member 21 does not come into direct contact with the heat sink 20, preventing damage to the member and allowing the cushioning member 22 to provide a heat insulating effect. Furthermore, because there is no gap (play) between the protective member 21 and the heat sink 20, rattling of the protective member 21 is prevented. In particular, since the extension portion 22b is sandwiched between the heat dissipating fins 20c of the heat dissipating body 20 and the support surface 21b of the protective member 21, the protective member 21 can be stably supported by the surface.

[0070] As described above, the cross section of the protective member 21 according to this modified example is an elliptical arc with the long axis in the left-right direction, and is therefore thinner in the front-to-rear direction than the protective member 21 having a regular circular arc cross section. Therefore, the radiating panel 11 can be formed to be thin.

[0071] (Variation 2) In the above-described embodiment, as shown in Fig. 3, no heat insulating member is disposed on the upper surface of the upper blocking member 30. However, a heat insulating member may be disposed on the upper surface of the upper blocking member 30. For example, as shown in Fig. 14, the heat insulating member 32b may be attached in a U-shape to both side surfaces facing the side portions 33a of the support member 33 and to the upper surface facing the upper fixing member 25. In this way, the heat insulating member 32b is reliably disposed between the upper blocking member 30 and the upper fixing member 25, thereby making it difficult for heat to be transmitted between them.

[0072] According to experiments conducted by the inventors, a certain degree of effect can be obtained even without a heat insulating member between the upper blocking member 30 and the upper fixing member 25. There are several factors that may explain this, as follows.

[0073] (1) Because the heat insulating member 32a is compressed and crushed by bolting to ensure watertightness, part of the crushed heat insulating member 32a protrudes onto the upper surface of the upper blocking member 30. This protruding heat insulating member 32a creates gaps between the upper fixing member 25 and the upper header pipe 18 and upper blocking member 30, making it difficult for heat to be conducted from the upper header pipe 18 and upper blocking member 30 to the upper fixing member 25.

[0074] (2) Since the upper fixing member 25 is connected to the heat dissipation fins 20c, heat conduction occurs between the two. However, since the distance between the pipe portion 20a of the heat dissipation body 20 and the heat dissipation fins 20c is large, the heat conduction is not so great that condensation occurs.

[0075] However, whether or not condensation occurs is affected by the temperature of the heat medium flowing through the radiant panel 11, the outside air temperature, humidity, etc., so the placement of the insulating member should be selected appropriately depending on the usage environment, etc. If a sheet-shaped insulating member is used as in the present disclosure, the installation position and size of the insulating member can be flexibly changed, and therefore the placement of the insulating member can also be easily changed. [Explanation of symbols]

[0076] 10 Radiant air conditioner 11 Radiation Panel 12 Panel frame 13 Vertical frame (frame material) 14 Upper frame 15 Bottom frame 16 Horizontal Bar 17 Back Panel 18 Upper header pipe 19 Lower header pipe 20 Heat sink 20a pipe section 20b Protrusion 20c Heat dissipation fin 21 Protective material 21a Mating part 21b Support surface 21c curved surface 22 Cushioning material 22a U-shaped part 22b Extension 25 Upper fixing material 25a U-shaped groove 25b Horizontal part 26 Lower fixing material 30 Upper closure member 30a through hole 30b Side hole 31 Lower blocking member 31a Through hole 31b Side hole 32a~32f Heat insulating materials 33 Support member 33a Side 33b bottom 33c Holding part 33d Bishole 34 Support member fastener 35 Obturator screw 40 Condensation receiving part 40a Vertical wall section 40b Front slope 40c rear slope 40d drain hole 40e pipe hole 41 Drain pan support 41a Bottom part 41b Back part 41c Front section 41d Rivet hole 41e Side part 41f fixing hole 43 Drain pan 43a Connection 45 Push Rivet 46 Extension 46a Cylinder part 46b Flange part 46c groove 47 pin 49 Drain pipe 50 heat source 51 Fluid supply source 52 On-off valve 53 Heat exchanger 54 filters 55 Circulation Pump 56 Supply piping 57 Discharge piping

Claims

1. A radiant panel that performs cooling or heating by circulating a heat medium inside, A plurality of heat sinks; a pair of header pipes arranged at both ends of the plurality of heat dissipating bodies in the longitudinal direction; a blocking member that blocks both longitudinal ends of the pair of header pipes; a pair of frame members supporting both longitudinal ends of the pair of header pipes; Equipped with a heat insulating member having a lower thermal conductivity than the header pipe and the frame material is disposed between the header pipe and the frame material; Radiant panel.

2. Further provided is a support member for holding the closing member, the header pipe is fixed to the pair of frame members via the support member, The heat insulating member is disposed between the support member and the closing member. The radiant panel of claim 1 .

3. The heat insulating member is disposed between the header pipe and the blocking member. The radiant panel according to claim 1 or 2.

4. The heat insulating member is attached to a surface of the closing member. The radiant panel of claim 1 .

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