A wing-shaped double-row high-efficiency vacuum tube type solar heat collector

Abstract

The utility model discloses a wing shape double -row high -efficient vacuum tube type solar energy heat collector, including support, glass vacuum solar heat collecting pipe and joint pipe, the middle part fixed mounting of support top end has joint pipe, and the both sides of joint pipe are inserted with one end of a plurality of glass vacuum solar heat collecting pipes, and the inside of joint pipe is equipped with the flow channel subassembly of the through joint pipe setting, and the flow channel subassembly includes stainless steel pipe, heat pipe blind pipe and screw thread interface, the utility model discloses adopting double -row structure design, compared with single -row structure reduced material waste, reduced the floor area, reduced the use of connecting pipeline, reduced the cost. The low problem of heat efficiency caused by the non -angle of gravity heat pipe of traditional double -row structure is solved, and the glass vacuum solar heat collecting pipe is inserted with the joint pipe, compared with the traditional non -pressure type heat collector only relies on the sealing mode of silicon rubber sealing ring, reduces the water leakage risk, and even if a glass vacuum pipe is damaged, also can not lead to the whole system water shortage and can not operate, reduces the maintenance difficulty.

Description

Technical Field

[0001] This utility model relates to the technical field of key components in solar energy, specifically a wing-shaped double-row high-efficiency vacuum tube solar collector. Background Technology

[0002] The existing metal-glass vacuum solar collector with pressurized tubes consists of three parts: a metal gravity heat pipe within the glass vacuum tube, which is divided into an evaporation section and a condensation section. The evaporation section is located within the glass vacuum tube, with aluminum fins between the glass vacuum tube and the gravity heat pipe to conduct the heat absorbed by the vacuum tube. The glass vacuum tube absorbs solar heat, which is then conducted to the evaporation section of the gravity heat pipe via the aluminum fins. The gravity heat pipe is filled with a heat-conducting medium. When a heat source acts on the evaporation section at the bottom of the heat pipe, the internal heat-conducting medium absorbs heat and vaporizes, forming steam. Driven by the pressure difference, the steam flows upward along the central channel of the heat pipe to the condensation section, releasing latent heat and condensing into liquid. The heat-conducting medium then flows naturally back to the evaporation section along the pipe wall under gravity, forming a continuous cycle. The gravity heat pipe needs to be installed at a certain angle to achieve evaporation and condensation (condensation end above, evaporation end below).

[0003] Traditional metal-glass vacuum tube collectors are designed as single-row manifold collectors (see attached instruction manual). Figure 4 The traditional method involves using a water pump, while the double-row method typically employs a non-pressurized vacuum tube collector. The advantage of a double-row non-pressurized header is its low cost, but its disadvantages include reliance on a water pump for operation. The glass vacuum tubes are directly inserted into the flow channel, relying solely on a silicone rubber seal, which makes them prone to leakage over time. If any glass vacuum tube breaks, the entire system will be unable to operate due to water shortage. The vacuum tubes and headers are filled with water, and significant heat dissipation occurs at night after the system stops working. This requires solar radiation the following day to heat the water in the glass vacuum tubes and headers to a certain temperature before providing heat energy, resulting in extremely poor actual thermal efficiency and posing significant challenges to engineering maintenance.

[0004] Due to manufacturing limitations, only metal-glass vacuum tube collectors without angled joints can be produced on the market. Double-row structures, because the gravity heat pipes do not form an angle, have very low thermal efficiency and have never been mass-produced. Single-row structures are the mainstream in the market. Although they can solve the problem of the gravity heat pipes forming an angle, they waste materials, occupy more space, require more connecting pipes, and have higher costs.

[0005] Furthermore, the technology with patent number CN202222621088.1 adds a metal tube to the middle of the non-pressurized glass vacuum tube collector to achieve the pressurized function of the collector through secondary heat exchange. However, it requires an additional liquid replenishment system and suffers from the same problem as the non-pressurized type: if the glass vacuum tube is damaged, secondary heat exchange cannot occur, and the entire series of collectors will malfunction. The vacuum tube and manifold are filled with a medium (water). Due to secondary heat transfer, the system dissipates a significant amount of heat at night after the solar panels stop working. It needs to be heated to a certain temperature the next day before a temperature difference can be formed between the water and the medium (water) in the intermediate metal tube for heat exchange, resulting in extremely poor actual thermal efficiency. Utility Model Content

[0006] The purpose of this invention is to provide a high-efficiency vacuum tube solar collector with an airfoil-shaped double row to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a wing-shaped double-row high-efficiency vacuum tube solar collector, comprising a support, glass vacuum solar collector tubes, and a manifold. The manifold is fixedly installed at the middle of the top of the support. Both sides of the manifold are connected to one end of multiple glass vacuum solar collector tubes. The manifold has a flow channel assembly that runs through it. The flow channel assembly includes a stainless steel tube, a heat pipe blind tube, and a threaded interface. Multiple inclined heat pipe blind tubes are evenly arranged on both sides of the stainless steel tube, and the heat pipe blind tubes form an angle with the stainless steel tube, which facilitates the circulation of the gravity heat pipe. Both ends of the stainless steel tube are provided with threaded interfaces. The glass vacuum solar collector tubes have a gravity heat pipe evaporation end inside. The surface of the gravity heat pipe evaporation end is fixed with aluminum fins. One end of the gravity heat pipe evaporation end has a gravity heat pipe condensation end.

[0008] The system connects to external water supply and heating pipes through inlets and outlets at both ends of a stainless steel pipe. The pressurized medium enters the stainless steel pipe through the inlet, filling it with the pressurized medium. The glass vacuum solar collector tube transfers the heat energy generated by sunlight to the condenser end of the gravity heat pipe through the evaporator end. The condenser end then transfers the heat energy to the blind heat pipe, which in turn transfers it to the pressurized medium, heating it. The heated medium is then discharged through the outlet.

[0009] Preferably, the condensing ends of the gravity heat pipes are respectively arranged corresponding to the multiple blind heat pipes, and the condensing ends of the gravity heat pipes are inserted into the blind heat pipes corresponding to them. Heat exchange is achieved between the condensing ends of the gravity heat pipes and the blind heat pipes, thereby heating the pressurized medium.

[0010] Preferably, a manifold insulation layer is provided between the manifold and the flow channel assembly. The manifold insulation layer can reduce heat loss and improve the thermal efficiency of the collector.

[0011] Preferably, the two ends of the stainless steel pipe are connected in series with the solar collector through threaded interfaces, and the two ends of the stainless steel pipe are respectively provided with inlet and outlet. The threaded connection facilitates installation and disassembly, and the inlet and outlet are used for the inflow and outflow of the medium.

[0012] Preferably, the stainless steel pipe is filled with a working medium, which is a pressure-bearing medium.

[0013] Preferably, the angle of inclination of the heat pipe blind tube to the horizontal line is 4°-45°, and the glass vacuum solar collector tube and the heat pipe blind tube are respectively inclined.

[0014] Preferably, multiple limiting joints are fixed on both sides of the top of the bracket, and the other end of the glass vacuum solar collector tube is inserted into the interior of the multiple limiting joints. The limiting joints play a role in fixing and supporting the glass vacuum solar collector tube, ensuring its installation stability.

[0015] Compared with the prior art, the beneficial effects of this utility model are: This invention employs a double-row structure design, which reduces material waste, floor space, and the use of connecting pipes compared to a single-row structure, thus lowering costs. It solves the problem of low thermal efficiency caused by the lack of angle in traditional double-row structures due to gravity heat pipes. The glass vacuum solar collector tubes and manifolds are connected by a plug-in joint, which reduces the risk of leakage compared to traditional non-pressurized collectors that rely solely on silicone rubber sealing rings. Furthermore, even if one glass vacuum tube breaks, the entire system will not be unable to operate due to water shortage, reducing maintenance difficulty. A manifold insulation layer is provided between the manifold and the flow channel assembly, reducing heat loss after the system stops working. It eliminates the need to wait for the medium to reach a certain temperature before providing heat energy, improving thermal efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a schematic diagram of the existing single-row manifold solar collector of this utility model; Figure 5 This utility model Figure 2 Enlarged view of point A; Figure 6 This is a schematic diagram of the flow channel assembly of this utility model; Figure 7 This is a cross-sectional view of the flow channel assembly of this utility model.

[0017] In the diagram: 1. Support frame; 2. Glass vacuum solar collector tube; 3. Manifold; 4. Limiting joint; 5. Aluminum fins; 6. Insulation layer of manifold; 7. Flow channel assembly; 71. Stainless steel tube; 72. Blind heat pipe; 73. Threaded interface; 8. Condensation end of gravity heat pipe; 9. Evaporation end of gravity heat pipe. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] Please see Figure 1-7 This utility model provides a wing-shaped double-row high-efficiency vacuum tube solar collector, including a support 1, glass vacuum solar collector tubes 2, and a manifold 3. The manifold 3 is fixedly installed at the middle of the top of the support 1. Both sides of the manifold 3 are connected to one end of multiple glass vacuum solar collector tubes 2. The manifold 3 has a flow channel assembly 7 that runs through it. The flow channel assembly 7 includes a stainless steel tube 71, a heat pipe blind tube 72, and a threaded interface 73. Multiple inclined heat pipe blind tubes 72 are evenly arranged on both sides of the stainless steel tube 71, and the heat pipe blind tubes 72 and the stainless steel tube 71 form an angle to facilitate the circulation of the gravity heat pipe. Both ends of the stainless steel tube 71 are provided with threaded interfaces 73. The glass vacuum solar collector tubes 2 have a gravity heat pipe evaporation end 9 inside. The surface of the gravity heat pipe evaporation end 9 is fixed with aluminum fins 5. One end of the gravity heat pipe evaporation end 9 is provided with a gravity heat pipe condensation end 8.

[0020] The gravity heat pipe condenser ends 8 are respectively provided with a plurality of heat pipe blind tubes 72, and the gravity heat pipe condenser ends 8 are inserted into the heat pipe blind tubes 72 corresponding to them.

[0021] Specifically, heat exchange is achieved between the condenser end 8 of the gravity heat pipe and the blind tube 72 of the heat pipe, thereby heating the pressurized medium.

[0022] A manifold insulation layer 6 is provided between the manifold 3 and the flow channel assembly 7.

[0023] Specifically, the manifold insulation layer 6 can reduce heat loss and improve the thermal efficiency of the collector.

[0024] The two ends of the stainless steel pipe 71 are connected in series with the solar collector through the threaded interface 73. They can be combined as needed, either as a single unit or in series-parallel combination. The two ends of the stainless steel pipe 71 are also connected to the circulation pipe through the threaded interface 73, and the two ends of the stainless steel pipe 71 are respectively provided with an inlet and an outlet.

[0025] Specifically, the threaded connection facilitates installation and disassembly, while the inlet and outlet are used for the inflow and outflow of the medium.

[0026] The interior of the stainless steel pipe 71 is filled with a working medium, which is a pressure-bearing medium.

[0027] The angle of inclination of the heat pipe blind tube 72 to the horizontal line is 4°-45°, and the glass vacuum solar collector tube 2 and the heat pipe blind tube 72 are set at corresponding inclinations.

[0028] Multiple limiting connectors 4 are fixed on both sides of the top of the bracket 1, and the other end of the glass vacuum solar collector tube 2 is inserted into the interior of the multiple limiting connectors 4.

[0029] Specifically, the limiting joint 4 serves to fix and support the glass vacuum solar collector tube 2, ensuring the stability of its installation.

[0030] Working principle: During use, the pressurized working medium is introduced into the stainless steel tube 71 through the inlets at both ends. The glass vacuum solar collector tube 2 absorbs sunlight to generate heat energy, which is transferred to the gravity heat pipe evaporator end 9 through the aluminum fins 5. The heat-conducting medium in the gravity heat pipe evaporator end 9 absorbs heat and vaporizes. The vapor flows to the gravity heat pipe condenser end 8 and releases latent heat. The heat-conducting medium flows back under the action of gravity. The gravity heat pipe condenser end 8 transfers heat to the connected heat pipe blind tube 72, which then transfers heat to the medium in the stainless steel tube 71, heating the medium. The heated medium is discharged through the outlet for use. The manifold insulation layer 6 reduces heat loss, and the limiting joint 4 and reinforcing ribs 5 ensure the structural stability of the collector.

[0031] In use, the medium (water) circulates through the manifold 3, absorbing heat and continuously increasing its temperature to meet usage requirements. Depending on water demand, an external hot water storage tank may be connected, supplying water for use once the predetermined temperature is reached. Due to the instability of solar energy, this invention may be equipped with a second energy source (electricity or natural gas) to raise the temperature of the medium (water) in the hot water storage tank to the required level.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wing-shaped double-row high-efficiency vacuum tube solar collector, comprising a support frame (1), glass vacuum solar collector tubes (2), and manifolds (3), characterized in that, A manifold (3) is fixedly installed at the middle of the top of the bracket (1). The manifold (3) is connected to one end of a plurality of glass vacuum solar collector tubes (2) on both sides. The manifold (3) is provided with a flow channel assembly (7) that runs through the manifold (3). The flow channel assembly (7) includes a stainless steel tube (71), a heat pipe blind tube (72) and a threaded interface (73). A plurality of inclined heat pipe blind tubes (72) are evenly provided on both sides of the stainless steel tube (71), and the heat pipe blind tubes (72) and the stainless steel tube (71) form an angle. Both ends of the stainless steel tube (71) are provided with threaded interfaces (73). The glass vacuum solar collector tube (2) is provided with a gravity heat pipe evaporation end (9). The surface of the gravity heat pipe evaporation end (9) is fixed with aluminum fins (5). One end of the gravity heat pipe evaporation end (9) is provided with a gravity heat pipe condensation end (8).

2. The airfoil-shaped double-row high-efficiency vacuum tube solar collector according to claim 1, characterized in that: The gravity heat pipe condenser ends (8) are respectively set with the corresponding heat pipe blind tubes (72), and the gravity heat pipe condenser ends (8) are inserted into the corresponding heat pipe blind tubes (72).

3. The wing-shaped double-row high-efficiency vacuum tube solar collector according to claim 1, characterized in that: A manifold insulation layer (6) is provided between the manifold (3) and the flow channel assembly (7).

4. The airfoil-shaped double-row high-efficiency vacuum tube solar collector according to claim 1, characterized in that: The two ends of the stainless steel pipe (71) are connected in series with the solar collector through threaded interfaces (73), and the two ends of the stainless steel pipe (71) are respectively provided with water inlet and water outlet.

5. The airfoil-shaped double-row high-efficiency vacuum tube solar collector according to claim 1, characterized in that: The stainless steel pipe (71) is filled with a working medium, which is a pressure-bearing medium.

6. The airfoil-shaped double-row high-efficiency vacuum tube solar collector according to claim 1, characterized in that: The angle of inclination of the heat pipe blind tube (72) to the horizontal line is 4°-45°, and the glass vacuum solar collector tube (2) is set at an angle corresponding to the heat pipe blind tube (72).

7. The airfoil-shaped double-row high-efficiency vacuum tube solar collector according to claim 1, characterized in that: Multiple limiting connectors (4) are fixed on both sides of the top of the bracket (1), and the other end of the glass vacuum solar collector tube (2) is inserted into the interior of the multiple limiting connectors (4).

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