An underground heat dissipation system for a combined irrigation system, a construction method and an implementation method

Abstract

The application discloses an underground heat dissipation system of a combined irrigation system, which comprises an underground water pipe buried below a buried lamp position and a heat conduction plate connected with the underground water pipe, and the heat conduction plate is connected with a heat dissipation device of the buried lamp. The application combines garden sprinkling irrigation with the heat dissipation device of the buried lamp, uses night to irrigate the garden, and uses water flow in the underground water pipe during irrigation to conduct away heat of the buried lamp, so that efficient and economical heat dissipation of the buried lamp is realized.

Description

Technical Field

[0001] This invention relates to an underground heat dissipation system for a combined irrigation system, and also to a construction method and implementation method for the aforementioned heat dissipation system. Background Technology

[0002] In-ground lights are landscape lights installed in the ground, containing LED bulbs. In the past, people generally believed that in-ground lights had a waterproof rating of IP64-65. However, in reality, the waterproof requirements for in-ground lights are no less than those for underwater lights. This is because roads are easily flooded, whether by rain or artificial watering, and in-ground lights buried in the ground are easily submerged. The working environment of in-ground lights is actually harsher than that of underwater lights. Due to the waterproof requirements and the need for proper sealing during installation to prevent water immersion, and because they are buried in the ground, the heat dissipation environment for in-ground lights is very poor. The waterproof components of in-ground lights include a die-cast aluminum alloy shell, non-metallic sealant or silicone sealing rings, and an outer layer of concrete. Different materials have different shrinkage rates, and the thermal expansion and contraction caused by high temperatures cause different sealing components to expand and contract differently. After a period of use, this can easily lead to cracks in the sealing surface, causing it to fail and allowing external moisture to penetrate.

[0003] Chinese patent (patent number: CN201911263882.X, publication number: CN110906217B) discloses a high-heat-dissipation LED in-ground light. It achieves efficient heat dissipation by setting coolant inside the in-ground light and driving the coolant circulation through pedestrians stepping on it. This method has two problems. First, there is the problem of how to quickly conduct away the heat of the coolant. The in-ground light is placed underground, and it is difficult to quickly conduct away the heat after the coolant heats up. Second, as pedestrians, they rarely step on the in-ground light intentionally, and the way pedestrians step on it is unreliable. It is impossible to predict when pedestrians will step on it. At the same time, it also complicates the waterproof sealing structure, which is not conducive to the waterproofing of the light fixture. Summary of the Invention

[0004] The purpose of this invention is to provide an underground heat dissipation system for a combined irrigation system for heat dissipation of garden in-ground lights. Further, this invention aims to provide a construction method for the underground heat dissipation system of a combined irrigation system, and an implementation method for the heat dissipation system of garden in-ground lights.

[0005] This invention connects the heat dissipation system of an in-ground light to the underground pipes of a garden sprinkler system, utilizing the underground water flow channels to dissipate the heat from the in-ground light. In areas with abundant greenery, such as gardens, fixed sprinkler systems are typically required, operating for at least 12 hours daily. Other green spaces, such as parks, also require sprinkler systems for several hours daily, with an hourly water output of approximately tens of cubic meters. Furthermore, the pipes in these sprinkler systems are mostly underground, resulting in typically low water temperatures. By combining the heat dissipation system of the in-ground light with the underground sprinkler pipes, efficient and economical heat dissipation can be achieved.

[0006] Therefore, the present invention provides an underground heat dissipation system for a combined irrigation system, comprising an underground water pipe buried below the location of an underground light and a heat-conducting plate connected to the underground water pipe, wherein the heat-conducting plate is connected to the heat dissipation device of the underground light.

[0007] Furthermore, it includes a pre-embedded cylinder for installing in-ground lights, the pre-embedded cylinder being made of a thermally conductive material, the pre-embedded cylinder being connected to the thermally conductive sheet of the in-ground light, and the pre-embedded cylinder being connected to a heat-conducting plate, in such a way that the heat generated by the in-ground light is guided through the pre-embedded cylinder to the heat-conducting plate.

[0008] Furthermore, the outer wall of the inground lamp housing and the inner wall of the pre-embedded cylinder are provided with mutually cooperating heat-conducting sheets, and the heat-conducting sheets are coated with thermally conductive silicone.

[0009] Furthermore, the bottom of the embedded cylinder is fixed to the heat-conducting plate with bolts, and thermally conductive silicone is filled between the bottom of the embedded cylinder and the heat-conducting plate.

[0010] A groove is provided between the outer wall and the inner wall of the pre-embedded cylinder, and a heat-conducting plate is provided in the groove. The groove is connected to the heat-conducting plate through a pipe.

[0011] Furthermore, the heat-conducting plate has a heat-conducting pipe inside, and a joint for connecting the heat-conducting pipe and the pipe is provided on the surface of the heat-conducting plate.

[0012] Furthermore, the upper end of the pre-embedded cylinder is fixed to the cover plate of the in-ground light, a silicone sealing ring is provided between the upper end of the pre-embedded cylinder and the cover plate, the cover plate is provided with a channel that matches the groove, and a filter screen is provided at the upper end of the channel and / or the groove.

[0013] The present invention also includes a construction method for the above-mentioned heat dissipation system, comprising the following steps:

[0014] (1) Lay underground water pipes below the designed in-ground light locations, connect one end of the heat-conducting pipe on the lower layer of the heat-conducting plate to the underground water pipe, and connect the other end to the water pipe of the irrigation nozzle; connect one end of the heat-conducting pipe on the upper layer of the heat-conducting plate to the pipeline, and cover with soil after the connection is completed.

[0015] (2) Install the embedded cylinder, pass the wires and control wires of the buried light through the reserved holes on the bottom of the embedded cylinder, connect the pipe to the bottom of the embedded cylinder, and fix the embedded cylinder in the predetermined position with concrete.

[0016] (3) Install the in-ground light, connect the wires and control wires to the reserved interface of the in-ground light, pour sealant into the bottom of the in-ground cylinder and the reserved hole, apply thermal conductive silicone to the heat-conducting sheet on the inner wall of the in-ground cylinder and the outer wall of the in-ground light housing, insert the heat-conducting sheet of the in-ground light into the heat-conducting sheet on the inner wall of the in-ground cylinder, pour sealant into the reserved groove at the top of the in-ground light cover plate and / or the in-ground cylinder, or place a silicone sealing ring and tighten it with bolts.

[0017] (4) Install the nozzles, including at least the nozzles that are aligned with the grooves for replenishing water into the grooves.

[0018] Furthermore, in step (1) above, the other end of the heat-conducting pipe on the upper layer of the heat-conducting plate is connected to the drainage groove; or the other end of the heat-conducting pipe on the upper layer of the heat-conducting plate is connected to the pipe of the nozzle that replenishes water to the groove, and a micro pump is installed in the pipe to circulate the water in the groove to the nozzle.

[0019] The present invention also includes a method for implementing the above-mentioned heat dissipation system, wherein watering is carried out at night, and the watering nozzles water at a predetermined time, with each watering session lasting a set duration.

[0020] The beneficial effects of this invention are as follows:

[0021] (1) By setting the sprinkler system's sprinkler time to nighttime, and utilizing the flow of water in the water pipe during sprinkler irrigation to conduct away the heat from the heat conduction plate connected to the heat dissipation system of the in-ground lamp, the temperature of the heat conduction plate drops and maintains a temperature difference with the heat conduction sheet of the in-ground lamp. In order to improve the efficiency of heat conduction, the heat conduction plate can be divided into upper and lower double layers, each with a corrugated heat conduction pipe inside, thus conducting heat efficiently. Since the heat generated by the in-ground lamp will not cause a significant increase in the water temperature in the underground water pipe relative to the hourly flow rate of the underground water pipe, and the underground water pipe can be made of metal pipe, the water will exchange heat with the low-temperature soil underground during the forward flow process. Therefore, the use of water in the underground pipe for heat conduction will not affect its use for irrigation.

[0022] (2) Due to antifreeze requirements, the soil cover depth above the underground water pipe is required to be no less than 15cm. In practice, the soil cover thickness above the pipe is usually no less than 30cm. If other factors such as vehicle traffic are considered, the actual burial depth is greater than this, which is significantly different from the depth of the buried light. In a specific embodiment of the present invention, a pre-buried cylinder is set up, and the buried light is installed in the pre-buried cylinder. By sealing the pre-buried cylinder and the buried light together with the waterproof seal of the buried light itself, a double seal is formed to ensure waterproof performance. The pre-buried cylinder has double side walls, and a groove is set between the two side walls. Water is filled into the groove, and the groove is connected to the heat-conducting plate, thereby overcoming the influence of the difference in burial depth. The cooling water of the heat-conducting plate can be discharged into the water storage tank through the drainage ditch. The underground water storage tank can directly irrigate the green area within a certain range. In addition, the cooling water of the heat-conducting plate can also be circulated by a micro pump.

[0023] (3) The working time of the buried light is usually several hours to ten hours, which may differ from the actual irrigation time. In a specific embodiment of the present invention, the irrigation method is set to pulse irrigation, that is, the irrigation is carried out for a certain duration at certain intervals, thereby extending the irrigation time to be comparable to the working time of the buried light. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of Embodiment 1 of the present invention;

[0025] Figure 2 This is a cross-sectional schematic diagram of Embodiment 2 of the present invention;

[0026] Figure 3 This is a top view of the pre-embedded cylinder in Example 2;

[0027] Figure 4 This is a partial cross-sectional view of the in-ground light in Example 2;

[0028] Figure 5 This is a top view of the in-ground light in Example 2;

[0029] Figure 6 This is a schematic diagram of a heat-conducting plate.

[0030] Explanation of reference numerals in the attached drawings: 1. In-ground light; 101. Cover plate; 102. Channel; 103. Reinforcing rib; 2. Embedded cylinder; 3. Underground water pipe; 4. Heat-conducting plate; 401. Heat-conducting pipe; 5. Threaded hole; 6. Heat-conducting sheet; 7. Groove; 8. Pipe; 9. Sealing groove; 10. Filter screen; 11. Reserved hole; 12. Sealant. Detailed Implementation

[0031] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0032] Reference Figure 1 , Figure 2 and Figure 6 As shown, an underground heat dissipation system for a combined irrigation system of the present invention includes an underground water pipe 3 buried below the location of a buried light and a heat-conducting plate 4 connected to the underground water pipe 3. The heat-conducting plate 4 is connected to the heat dissipation device of the buried light 1. In embodiment 1, the planned burial depth of the underground water pipe 3 is relatively shallow to match the burial depth of the buried light 1. (Refer to...) Figure 6 As shown, the heat-conducting plate 4 has a corrugated heat-conducting pipe 401 inside. The upper surface of the heat-conducting plate 4 contacts the bottom surface of the embedded cylinder 2. The bottom surface of the embedded cylinder 2 has wing plates and is fixed to the heat-conducting plate 4 through threaded holes 5 and bolts. The heat-conducting plate 4 and the bottom surface of the embedded cylinder 2 are filled with thermally conductive silicone. The thermally conductive silicone can increase the contact area between the bottom surface of the embedded cylinder 2 and the surface of the heat-conducting plate 4, thereby improving the heat conduction efficiency. (Refer to...) Figure 1 As shown, the inner wall of the embedded cylinder 2 is provided with paired heat-conducting plates 6, and the outer wall of the housing of the in-ground lamp 1 is provided with matching heat-conducting plates 6 for insertion into the middle of the paired heat-conducting plates 6 on the inner wall of the embedded cylinder 2 and for contact. In order to increase the contact area and increase the heat conduction efficiency, the heat-conducting plates 6 are coated with thermally conductive silicone. The rising heat-conducting pipe 401, the embedded cylinder 2 and the heat-conducting plate 4 are made of thermally conductive materials, such as common thermally conductive metals.

[0033] Embodiment 2 of the present invention is basically the same as Embodiment 1, except that in Embodiment 2, a groove 7 is provided on the side wall of the pre-embedded cylinder 2, and the groove 7 is connected to the heat-conducting plate 4 through a pipe 8. The heat-conducting plate 4 is divided into upper and lower layers, each provided with a heat-conducting pipe 401 connected to the pipe 8 and the underground water pipe 3, respectively. The shape of the heat-conducting pipe can be... Figure 6 As shown. In actual engineering, for ease of installation, the heat-conducting plate 4 and the upper and lower layers of heat-conducting pipes 401 are treated as an independent component, with connectors at both ends of the heat-conducting pipes 401. After the heat-conducting plate 4 and pipes 8 are connected and installed, the soil is used for backfilling, followed by the installation of the pre-embedded cylinder 2. Since it is difficult to ensure that the burial depth of the pre-embedded cylinder 2 matches the burial depth of the underground water pipe 3 in actual engineering, in embodiment 2, a plastic flexible hose is used as pipe 8 to connect the heat-conducting plate 4 and the groove 7, using water as the heat-conducting medium for heat exchange within the heat-conducting plate 4. (Refer to...) Figure 3 , Figure 4 and Figure 5As shown, the two side walls of the groove 7 are connected by heat-conducting plates 6. The heat-conducting plates 6 serve to support the groove 7 and increase the contact area with water to quickly conduct the heat generated by the in-ground lamp 1 to the water in the groove 7. The upper end of the pre-embedded cylinder 2 is provided with a threaded hole 5 and a sealing groove 9. The in-ground lamp 1 includes a light-transmitting cover and a cover plate 101. Since the heat dissipation system of the present invention does not need to dissipate heat to the outside through a metal shell, the cover plate 101 can be made of heat-insulating material to prevent the die-cast aluminum shell of the in-ground lamp 1 from heating up rapidly due to exposure to sunlight, which would affect the internal sealing structure. The upper end of the groove 7 is provided with a filter screen 10 to prevent foreign objects from clogging the pipe 8 connecting the heat-conducting plate 4 and the groove 7. The lower part of the cover plate 101 is provided with a sealing groove 9. The sealing groove 9 of the pre-embedded cylinder 2 and the cover plate 101 is filled with sealant or a silicone sealing ring is installed for waterproofing. The cover plate 101 is provided with a threaded hole 5 for fastening to the upper end of the pre-embedded cylinder 2 to prevent water from entering from the joint between the pre-embedded cylinder 2 and the in-ground lamp 1. In this embodiment, the other end of the heat pipe 401 is located in a drainage trough, which is connected to an underground water storage tank. The water in the water storage tank can be used for irrigation. A water inlet is provided in the groove 7. To solve the problem of dust affecting the surface of the in-ground light 1, the cover plate 101 is provided with a channel 102 that mates with the groove 7. The two sides of the channel 102 are connected by reinforcing ribs 103. A filter screen 10 is provided on the channel 102, and the water inlet is a nozzle. The nozzle is located on the ground and washes the surface of the in-ground light 1 periodically or in a controlled manner. The washed water enters the groove 7. In this embodiment, when the road surface is flooded, the groove 7 can also guide the water away to prevent the in-ground light from being submerged in water. Generally, in-ground lights with a waterproof rating of less than IP67 cannot withstand prolonged immersion in water. In some other embodiments, when there is no underground water storage tank, cooling water can be directly introduced into the ground. The amount of cooling water used is small and contains low heat, so it generally will not affect the root system of plants. Of course, another pipe can be used to connect one end of the heat conduction plate 4 to the water inlet or nozzle, and a micro pump can be set up to circulate the water.

[0034] The present invention also provides a construction method for the above-mentioned heat dissipation system, comprising the following steps:

[0035] (1) Lay underground water pipe 3 below the designed underground light location, connect the two ends of the heat conduction pipe of the lower layer of heat conduction plate 4 to the underground water pipe 3, connect one end of the heat conduction pipe of the upper layer of heat conduction plate 4 to the pipe 8, and cover with soil after the connection is completed.

[0036] (2) Install the embedded cylinder 2, pass the wires and control wires of the buried light 1 through the reserved hole 11 on the bottom surface of the embedded cylinder 2, connect the pipe 8 to the bottom of the embedded cylinder 2, and fix the embedded cylinder 2 in the predetermined position with concrete.

[0037] (3) Install the in-ground light 1, connect the wires and control wires to the reserved interface of the in-ground light 1, pour sealant 12 into the bottom of the pre-embedded cylinder 2 and the reserved hole 11 of the pre-embedded cylinder, apply thermal conductive silicone to the heat-conducting sheet 6 on the inner wall of the pre-embedded cylinder 2 and the outer wall of the housing of the in-ground light 1, and then insert the heat-conducting sheet 6 of the in-ground light 1 into the heat-conducting sheet 6 on the inner wall of the pre-embedded cylinder 2. Pour sealant into the reserved groove at the top of the cover plate 101 of the in-ground light 1 and / or place a silicone sealing ring and then tighten it with bolts.

[0038] (4) Install the nozzle, including at least a nozzle aligned with the groove 7 for replenishing water into the groove 7.

[0039] In the above embodiments, in step (1), the other end of the heat-conducting pipe 401 on the upper layer of the heat-conducting plate 4 is connected to the drainage groove; or the other end of the heat-conducting pipe 401 on the upper layer of the heat-conducting plate 4 is connected to the pipe 8 of the nozzle that replenishes water to the groove 7, and the pipe 8 is connected to a micro pump for circulating the water in the groove 7 to the nozzle.

[0040] This invention also discloses an implementation method for the above-mentioned heat dissipation system. The in-ground light 1 and the fixed sprinkler system are simultaneously turned on at night, and the sprinkler heads perform irrigation at predetermined time intervals, each irrigation lasting a set duration. This embodiment can solve the problem when the irrigation duration is shorter than the working time of the in-ground light 1. Furthermore, when the sprinkler system is not working or temporarily not irrigating, the groove 7 in the pre-embedded cylinder 2 communicates with the channel 102, allowing for conventional heat dissipation.

[0041] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An underground heat dissipation system for a combined irrigation system, characterized in that: This includes an underground water pipe buried below the location of the in-ground light and a heat-conducting plate connected to the underground water pipe. The heat-conducting plate is connected to the heat dissipation device of the in-ground light. Includes a pre-embedded cylinder for installing in-ground lights, the pre-embedded cylinder being made of a thermally conductive material, the pre-embedded cylinder being connected to the thermally conductive sheet of the in-ground light, and the pre-embedded cylinder being connected to a thermally conductive plate, in such a way that the heat generated by the in-ground light is guided through the pre-embedded cylinder to the thermally conductive plate; The outer wall of the underground lamp housing and the inner wall of the pre-embedded cylinder are provided with mutually cooperating heat-conducting plates, and the heat-conducting plates are coated with heat-conducting silicone. The bottom of the embedded cylinder is fixed to the heat-conducting plate with bolts, and the space between the bottom of the embedded cylinder and the heat-conducting plate is filled with thermally conductive silicone. A groove is provided between the outer wall and the inner wall of the embedded cylinder, and a heat-conducting plate is provided in the groove. The groove is connected to the heat-conducting plate through a pipe. The heat-conducting plate has a heat-conducting pipe inside, and a joint for connecting the heat-conducting pipe and the pipe is provided on the surface of the heat-conducting plate; The upper end of the pre-embedded cylinder is fixed to the cover plate of the in-ground light. A silicone sealing ring is provided between the upper end of the pre-embedded cylinder and the cover plate. The cover plate is provided with a channel that matches the groove. A filter screen is provided at the upper end of the channel and / or the groove.

2. A construction method for the heat dissipation system according to claim 1, characterized in that: Includes the following steps: (1) Lay underground water pipes below the designed underground light locations, connect one end of the heat-conducting pipe on the lower layer of the heat-conducting plate to the underground water pipe, and connect the other end to the water pipe of the irrigation nozzle; connect one end of the heat-conducting pipe on the upper layer of the heat-conducting plate to the pipeline, and cover with soil after the connection is completed. (2) Install the embedded cylinder, pass the wires and control wires of the buried light through the reserved holes on the bottom of the embedded cylinder, connect the pipe to the bottom of the embedded cylinder, and fix the embedded cylinder in the predetermined position with concrete; (3) Install the in-ground light, connect the wires and control wires to the reserved interface of the in-ground light, pour sealant into the bottom of the in-ground cylinder and the reserved hole, apply thermal conductive silicone to the heat-conducting sheets on the inner wall of the in-ground cylinder and the outer wall of the in-ground light housing, insert the heat-conducting sheets of the in-ground light into the heat-conducting sheets on the inner wall of the in-ground cylinder, pour sealant into the reserved groove at the top of the in-ground light cover plate and / or the in-ground cylinder, or place a silicone sealing ring and tighten it with bolts. (4) Install the nozzles, including at least the nozzles that are aligned with the grooves for replenishing water into the grooves.

3. The construction method of a heat dissipation system according to claim 2, characterized in that: In step (1), the other end of the heat-conducting pipe on the upper layer of the heat-conducting plate is connected to the drainage groove; or The other end of the heat-conducting pipe on the upper layer of the heat-conducting plate is connected to a pipe for replenishing water to the nozzle in the groove. A micro pump is installed in the pipe to circulate the water in the groove to the nozzle.

4. The construction method of a heat dissipation system according to claim 2, characterized in that: Irrigation is carried out at night, with the irrigation nozzles irrigating at predetermined times and for a set duration each time.

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