Inlet and outlet structure of a flat-plate solar collector

Abstract

This utility model discloses an inlet and outlet structure for a flat-plate solar collector, relating to the technical field of flat-plate solar collectors. The utility model includes a medium inlet and a medium outlet, both of which are tubular structures. Both the medium inlet and outlet are connected to a molding flow channel on the collector plate core. A back plate is provided on the rear side of the collector plate core, and a protective sleeve is provided on the back plate, extending towards the collector plate core. Two molding grooves are provided on the collector plate core, both of which are connected to the molding flow channel. The bottom of the molding grooves is a sloping structure, and the bottoms of the two molding grooves are respectively connected to the medium inlet and the medium outlet. Both the medium inlet and outlet are inclined and located within the protective sleeve. This utility model's inlet and outlet structure facilitates the flat-plate solar collector's horizontal placement, stacking, storage, and transportation.

Description

Technical Field

[0001] This utility model relates to the field of flat-plate solar collector technology, specifically to an inlet and outlet structure for a flat-plate solar collector. Background Technology

[0002] See Figure 1 The flat-plate solar collector includes an aluminum alloy frame 1, a back plate 2, an insulation layer 3, a collector core 4, and a glass cover 5. The glass cover 5 is installed on the front side of the aluminum alloy frame 1, and the back plate 2 is installed on the rear side of the aluminum alloy frame 1. The insulation layer 3 is provided on the side of the back plate 2 facing the glass cover 5, and the collector core 4 is provided on the side of the insulation layer 3 facing the glass cover 5.

[0003] The collector core 4 is welded together from two stainless steel plates with forming channels, which are formed by stamping using a forming die. A medium inlet 6 and a medium outlet 7 are welded to the rear side of the collector core 4. Both the medium inlet 6 and the medium outlet 7 are pipe structures and are connected to the forming channels. Both the medium inlet 6 and the medium outlet 7 extend vertically from the back plate 2. The medium inlet 6 is used to connect to the user's cold water pipe, and the medium outlet 7 is used to connect to the user's hot water pipe.

[0004] The working principle of the flat-plate solar collector is as follows: cold water enters the collector core 4 through the medium inlet 6. After the solar radiation passes through the glass cover plate 5, it is projected onto the collector core 4, absorbed by the collector core 4 and converted into heat energy. Then, the heat is transferred to the cold water in the collector core 4, so that the cold water is heated into hot water. The hot water flows out through the medium outlet 7.

[0005] Because the medium inlet 6 and the medium outlet 7 extend from the back plate 2, both the medium inlet 6 and the medium outlet 7 protrude from the back plate 2, so the flat plate solar collector cannot be laid flat, and therefore multiple flat plate solar collectors cannot be stacked, making storage and transportation inconvenient. Utility Model Content

[0006] To address the aforementioned shortcomings of existing technologies, this invention proposes an inlet and outlet structure for a flat-plate solar collector. This structure facilitates the flat-plate solar collector to be laid flat, making it easy to stack, store, and transport.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An inlet and outlet structure for a flat-plate solar collector includes a medium inlet and a medium outlet, both of which are tube structures. Both the medium inlet and outlet are connected to a molding flow channel on the collector core. A back plate is provided on the rear side of the collector core, and a protective sleeve is provided on the back plate, extending towards the collector core. Two molding grooves are provided on the collector core, both of which are connected to the molding flow channel. The bottom of the molding grooves is a sloping structure, and the bottoms of the two molding grooves are respectively connected to the medium inlet and the medium outlet. Both the medium inlet and the medium outlet are inclined and located within the protective sleeve.

[0008] Furthermore, the protective sleeve is provided in two parts: one protective sleeve contains the medium inlet, and the other protective sleeve contains the medium outlet.

[0009] Furthermore, the protective sleeve includes a cylinder with a folded edge on the outer circumference of one end of the cylinder. The folded edge is connected to the side of the back plate away from the heat collection plate core. The other end of the cylinder has a bottom with a vertical elongated hole. The medium inlet and the medium outlet are both inserted into the vertical elongated hole.

[0010] Furthermore, both the medium inlet and the medium outlet are inclined upwards at the end furthest from the molding groove.

[0011] Furthermore, both the medium inlet and the medium outlet are perpendicular to the bottom of the molding groove.

[0012] Furthermore, both the medium inlet and the medium outlet are provided with external threads at the end away from the molding groove.

[0013] Furthermore, both the medium inlet and the medium outlet are provided with plugs at one end near the molding groove, and the bottom of the molding groove is provided with a socket, and the plugs are inserted into the sockets.

[0014] The beneficial effects of this utility model are: 1. By setting a profiled groove on the core of the collector plate, the bottom of the profiled groove 412 is a sloping structure, which can provide a sloping structure as an installation surface for the medium inlet and medium outlet, so that the medium inlet and medium outlet can be set at an angle, so as to shorten the horizontal length of the medium inlet and medium outlet, so that the medium inlet and medium outlet can be hidden in the protective sleeve, preventing the medium inlet and medium outlet from protruding from the back side of the back plate, so that the flat plate solar collector can be laid flat, and multiple flat plate solar collectors can be stacked for easy storage and transportation.

[0015] 2. The forming groove is easy to process; it can be obtained by stamping with a forming mold.

[0016] 3. The sloping structure at the bottom of the corrugated groove provides mounting surfaces for the media inlet and outlet. Simply place the media inlet and outlet vertically at the bottom of the groove, and they will be inclined, allowing for the use of straight pipes instead of bends. Compared to using bends, using straight pipes makes it easier to weld the straight pipe to the bottom of the groove by wrapping the welding torch around its circumference, thus improving processing convenience.

[0017] 4. Because both the medium inlet and outlet are angled upwards, it is convenient for staff to operate from above the flat-plate solar collector, connecting the user's cold water pipe to the medium inlet and the user's hot water pipe to the medium outlet, which improves installation convenience.

[0018] 5. The vertical elongated hole provides sufficient vertical space for the insertion of the medium inlet and outlet without obstructing their insertion, thus facilitating the assembly of the medium inlet, outlet, and protective sleeve.

[0019] 6. By installing plugs at the medium inlet and medium outlet and inserting holes at the bottom of the profiled groove, the positions of the medium inlet and medium outlet can be located at the bottom of the profiled groove through the plug-in connection of the plugs and inserting holes. This helps to prevent the medium inlet and medium outlet from moving during welding, and improves the installation accuracy of the medium inlet and medium outlet. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the background technology; Figure 2 It is a 3D view of the medium inlet pipe and the medium outlet pipe; Figure 3 It's a 3D protective case Figure 1 ; Figure 4 It's a 3D protective case Figure 2 ; Figure 5 It is a three-dimensional structure consisting of the first stainless steel plate, the medium inlet pipe, and the medium outlet pipe. Figure 1 ; Figure 6 yes Figure 5 A magnified view of a section at point A in the middle; Figure 7 It is a three-dimensional structure consisting of the first stainless steel plate, the medium inlet pipe, and the medium outlet pipe. Figure 2 ; Figure 8 yes Figure 7 A magnified view of a section at point B in the middle; Figure 9 This is a front view of the first stainless steel plate, the medium inlet pipe, and the medium outlet pipe; Figure 10 yes Figure 9 A magnified view of a section at point C; Figure 11 It is a three-dimensional view of the backplate, protective sleeve, first stainless steel plate, medium inlet pipe and medium outlet pipe; Figure 12 yes Figure 11 A magnified view of a section at point D; Figure 13 This is a 3D view of a flat-plate solar collector; Figure 14 yes Figure 13 A magnified view of a section at point E in the middle.

[0021] Explanation of reference numerals in the attached figures: 1-Aluminum alloy frame, 2-Back panel, 3-Insulation layer, 4-Heat collector core, 41-First stainless steel plate, 411-Forming channel, 412-Forming groove, 4121-Insertion hole 5-Glass cover plate, 6-Media inlet, 7-Media outlet, 8-Plug, 9-Protective sleeve, 91-Cylinder, 92-Folded edge, 93-Bottom of cylinder, 931-Vertical elongated hole. Detailed Implementation To better understand this utility model, it will be further described below with reference to the accompanying drawings. It is worth noting that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are used for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Example: An inlet and outlet structure for a flat-plate solar collector, see [link / reference]. Figure 2 It includes a medium inlet 6 and a medium outlet 7, both of which are pipe structures.

[0023] See Figure 2 Both the right end of the medium inlet 6 and the right end of the medium outlet 7 are equipped with plugs 8, which are ring-shaped. The plug 8 at the right end of the medium inlet 6 is an integral part of the medium inlet 6, and the plug 8 at the right end of the medium outlet 7 is an integral part of the medium outlet 7.

[0024] See Figure 2Both the left end of the medium inlet 6 and the left end of the medium outlet 7 are provided with external threads. The external thread at the left end of the medium inlet 6 is used to connect to the cold water pipe at the user end. The cold water pipe is a pipe that transmits cold water. The external thread at the left end of the medium outlet 7 is used to connect to the hot water pipe at the user end. The hot water pipe is a pipe that transmits hot water.

[0025] See Figures 5 to 10 The medium inlet 6 and the medium outlet 7 are both installed on the heat collection plate core.

[0026] The heat collection plate core is welded from two stainless steel plates with stamped flow channels 411. To distinguish them, the two stainless steel plates are referred to as the first stainless steel plate 41 and the second stainless steel plate, respectively. The first stainless steel plate 41 is located on the back side of the second stainless steel plate.

[0027] See Figure 6 and Figure 8 In addition to the forming flow channel 411, the first stainless steel plate 41 also has two forming grooves 412. The forming grooves 412 are grooves formed by stamping using a forming mold, and the bottom of the forming grooves 412 has a sloping structure. Both forming grooves 412 have insertion holes 4121 at their bottoms.

[0028] When assembling the collector plate core, medium inlet 6, and medium outlet 7, firstly, connect the plugs 8 on both the medium inlet 6 and medium outlet 7 to the sockets 4121 to facilitate positioning the medium inlet 6 and medium outlet 7 on the collector plate core; then, weld and fix both the medium inlet 6 and medium outlet 7 to the bottom of the profiled groove 412. (See below for further details.) Figure 10 The medium inlet 6 and the medium outlet 7 are both perpendicular to the bottom of the molding groove 412. The left end of the medium inlet 6 and the left end of the medium outlet 7 are both inclined upwards. The medium inlet 6 and the medium outlet 7 are both connected to the molding flow channel 411 on the heat collection plate core.

[0029] See Figures 11 to 14 A back plate 2 is provided on the rear side of the heat collection plate core, and the back plate 2 is fixedly installed on the rear side of the aluminum alloy frame 1.

[0030] The back panel 2 has two mounting holes, each into which a protective sleeve 9 is inserted. (See also...) Figure 3 and Figure 4 The protective sleeve 9 includes a cylinder 91. The outer circumference of the left end of the cylinder 91 has a folded edge 92, and the right end of the cylinder 91 has a bottom 93. The bottom 93 has a vertical elongated hole 931. The cylinder 91, the folded edge 92, and the bottom 93 are an integral structure. Insert the cylinder 91 of the protective sleeve 9 into the mounting hole of the back plate 2 until the folded edge 92 at the left end of the cylinder 91 abuts against the back plate 2, indicating that the insertion is complete.

[0031] When assembling the protective sleeve 9, the medium inlet 6, and the medium outlet 7, firstly, align the left end of the medium inlet 6 with the vertical elongated hole 931 on the first protective sleeve 9, and align the left end of the medium outlet 7 with the vertical elongated hole 931 on the second protective sleeve 9; then, insert both the medium inlet 6 and the medium outlet 7 into the protective sleeve 9 through the vertical elongated hole 931. During the insertion process, the vertical elongated hole 931 has sufficient vertical space to allow the medium inlet 6 and the medium outlet 7 to be inserted without obstructing their insertion. After insertion, both the medium inlet 6 and the medium outlet 7 are hidden inside the protective sleeve 9.

[0032] As can be seen from the above description, this embodiment has the following advantages: First, in the background technology, the medium inlet 6 and the medium outlet 7 extend from the rear side of the back plate 2, causing the medium inlet 6 and the medium outlet 7 to protrude from the rear side of the back plate 2. This makes it impossible for the existing flat-plate solar collectors to be laid flat, and thus impossible to stack multiple flat-plate solar collectors, making storage and transportation inconvenient.

[0033] In this embodiment, by setting a profiled groove 412 on the core of the collector plate, the bottom of the profiled groove 412 is a sloping structure, which can provide a sloping structure as an installation surface for the medium inlet 6 and the medium outlet 7, so that the medium inlet 6 and the medium outlet 7 can be set at an angle, so as to shorten the horizontal length of the medium inlet 6 and the medium outlet 7, so that the medium inlet 6 and the medium outlet 7 can be hidden inside the protective sleeve 9, preventing the medium inlet 6 and the medium outlet 7 from protruding from the back plate 2, so that the flat plate solar collector can be laid flat, and multiple flat plate solar collectors can be stacked for easy storage and transportation.

[0034] Secondly, the 412 profile groove is easy to process; it can be obtained by stamping with a profile mold.

[0035] Third, the sloping structure at the bottom of the molding groove 412 provides an installation surface for the medium inlet 6 and the medium outlet 7. Simply placing the medium inlet 6 and the medium outlet 7 vertically at the bottom of the molding groove 412 allows them to be in an inclined position, thus enabling the medium inlet 6 and the medium outlet 7 to use straight pipes without the need for bends. Compared to using bends, using straight pipes makes it easier to weld the straight pipe to the bottom of the molding groove 412 by surrounding it with a welding torch, improving processing convenience.

[0036] Fourth, because both the medium inlet 6 and the medium outlet 7 are inclined upwards, it is convenient for staff to operate from above the flat-plate solar collector to connect the user's cold water pipe to the medium inlet 6 and the user's hot water pipe to the medium outlet 7, which improves the ease of installation.

[0037] Fifth, the vertical elongated hole 931 has sufficient vertical space to allow the media inlet 6 and media outlet 7 to be inserted without hindering their insertion, thus facilitating the assembly of the media inlet 6, media outlet 7 and protective sleeve 9.

[0038] Sixth, by setting plugs 8 on the medium inlet 6 and the medium outlet 7, and setting insertion holes 4121 on the bottom of the molding groove 412, the positions of the medium inlet 6 and the medium outlet 7 can be positioned on the bottom of the molding groove 412 through the plug-in cooperation of the plugs 8 and the insertion holes 4121. This helps to prevent the medium inlet 6 and the medium outlet 7 from moving when welding them, and helps to improve the installation accuracy of the medium inlet 6 and the medium outlet 7.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An inlet and outlet structure for a flat-plate solar collector, comprising a medium inlet and a medium outlet, both of which are tubular structures, both connected to a pressed flow channel on a collector core, and a back plate provided on the rear side of the collector core, characterized in that, The back plate is provided with a protective sleeve that extends toward the heat collection plate core. The heat collection plate core is provided with two molding grooves, both of which are connected to the molding flow channel. The bottom of the molding grooves is a sloping structure. The bottom of the two molding grooves is connected to the medium inlet and the medium outlet, respectively. The medium inlet and the medium outlet are both inclined and located inside the protective sleeve.

2. An inlet and outlet structure for a flat plate solar collector according to claim 1, wherein The protective sleeve is provided in two parts: one protective sleeve contains the medium inlet, and the other protective sleeve contains the medium outlet.

3. An inlet and outlet structure for a flat plate solar collector according to claim 2, wherein The protective sleeve includes a cylinder with a folded edge on the outer circumference of one end. The folded edge is connected to the side of the back plate away from the heat collection plate core. The other end of the cylinder has a bottom with a vertical elongated hole. The medium inlet and the medium outlet are both inserted into the vertical elongated hole.

4. An inlet and outlet structure for a flat plate solar collector according to claim 1, wherein Both the medium inlet and the medium outlet are inclined upwards at the end furthest from the molding groove.

5. The inlet and outlet structure of a flat-plate solar collector according to claim 4, characterized in that, Both the medium inlet and the medium outlet are perpendicular to the bottom of the forming groove.

6. The inlet and outlet structure of a flat-plate solar collector according to claim 4, characterized in that, Both the medium inlet and the medium outlet are provided with external threads at the end away from the forming groove.

7. An inlet and outlet structure for a flat plate solar collector according to claim 4, wherein Both the medium inlet and the medium outlet are provided with plugs at one end near the molding groove, and the bottom of the molding groove is provided with a socket, and the plugs are inserted into the sockets.

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