Spiral flow channel condensation type solar thermal collector

Abstract

The invention relates to the field of solar heat collectors, and discloses a spiral flow channel light-gathering type solar heat collector which particularly comprises a frame and a light-gathering reflecting plate fixedly arranged in the frame, a plurality of spiral pipes are arranged above the light-gathering reflecting plate, and side baffles are fixedly arranged on the top walls, located on the two sides of the light-gathering reflecting plate, of the frame. The heating uniformity of the purified water in the spiral pipe is jointly improved from the two angles of uniform heating of the purified water in the spiral pipe and uniform heating of the outer pipe wall of the spiral pipe, that is, the turbulence intensity in the spiral pipe is enhanced by controlling rotation of the spiral pipe, and the contact frequency of fluid and the pipe wall can be promoted through enhancement of turbulence; a local overheating or supercooling area is reduced, the heat transfer rate is increased, the purified water heating uniformity is further improved, air blowing treatment is carried out on the focus, part of heat at the focus is taken away through air flow blowing, the local temperature is reduced, high-temperature heat at the focus is diffused to other areas of the spiral pipe, and the temperature distribution in the frame is more uniform.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solar energy collectors, more particularly, the present application relates to a spiral flow channel light condensation type solar energy collector. BACKGROUND

[0002] At present, solar energy collectors mainly include vacuum tube type collectors and flat plate collectors. The vacuum tube type collector has high heat absorption efficiency and small heat loss, but it is made of glass and has the safety hazard of being easily broken. The flat plate collector has a copper-aluminum composite material as the heat absorption body, and the whole plate is welded, which needs to use antifreeze and water for secondary heat exchange. Although it is safe, the heat loss is large, and the collector cannot be installed vertically. When installed vertically in summer, the solar altitude angle is large, and the light flux is small.

[0003] The patent document with publication number CN217737565U is a conical spiral tube solar energy collector, which uses a spiral copper pipe as a heat absorption body and a flow channel. It has high safety and high thermal efficiency, and can be installed vertically on an outdoor standing roof. It has a large solar absorption area.

[0004] However, the light condensation reflector installed vertically outdoors in the above-mentioned patent document focuses sunlight on the focal point area of the spiral pipe, causing the temperature in this area to rise significantly, increasing the temperature gradient in the local area of the collector, resulting in uneven heat transfer inside, increased heat loss, and damage to the conical spiral pipe and other components, accelerating material aging. At the same time, there is a phenomenon of uneven heating of clean water in the conical spiral pipe. Therefore, a solution is provided. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a spiral flow channel light condensation type solar energy collector.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solution: a spiral flow channel light condensation type solar energy collector, comprising a frame and a light condensation reflector fixedly arranged inside the frame, a plurality of spiral pipes are arranged above the light condensation reflector, side baffles are fixedly arranged on the top walls on both sides of the light condensation reflector, and the two ends of the spiral pipes extend to the outside of the side baffles.

[0007] One of the side baffles is provided with a rotating assembly that rotates the plurality of spiral pipes, the rotating assembly comprises a drive shaft rotatably arranged above the frame, and a drive gear is fixedly arranged on the outside of the drive shaft.

[0008] The outside of the drive gear is meshingly connected with a driven gear, the driven gear is fixedly connected with the outer wall of the end of the uppermost spiral pipe, the plurality of spiral pipes are drivingly connected through a transmission member, and a heat equalizing assembly is arranged above the light condensation reflector to evenly heat the outside of the spiral pipes.

[0009] Further, two sides of the frame are respectively fixedly provided with an inlet water storage pipe and an outlet water storage pipe, the inlet water storage pipe is connected with the input ends of the plurality of spiral pipes, and the outlet water storage pipe is connected with the output ends of the plurality of spiral pipes.

[0010] Further, the outer side of the frame is provided with the inlet water pipe connected with the inlet water storage pipe and the outlet water pipe connected with the outlet water storage pipe.

[0011] Further, the heat uniform assembly comprises a connecting rod fixedly connected with the driving shaft, the end of the connecting rod is rotationally connected with the side baffle close to the inlet water pipe, two groups of interference boxes are rotationally arranged on the outer side of the connecting rod, and the interference boxes are fixedly connected with the frame.

[0012] Further, the reciprocating screw rod is fixedly sleeved on the outer wall of the interference box, the transmission plate is threadedly connected to the outer wall of the reciprocating screw rod, and the transmission plate is in sliding fit with the inner wall of the interference box.

[0013] Further, the interference box is provided with the air inlet pipe on the top wall, the interference box is connected with the air outlet pipe, the output ends of the two air outlet pipes are commonly connected with the focal point heat pipe, and the output end of the focal point heat pipe is arranged towards the focal point of the light reflection plate.

[0014] Further, the frame is provided with the air outlet on the outer wall corresponding to the focal point heat pipe at the bottom, and the glass cover plate is arranged above the frame.

[0015] The spiral flow channel light-concentrating type solar heat collector heats the clean water in the following steps:

[0016] The water in the spiral pipe is heated uniformly:

[0017] The clean water enters the inlet water storage pipe through the inlet water pipe, and then enters the plurality of spiral pipes, respectively. The heat-absorbing coating on the spiral pipe absorbs sunlight and converts it into heat energy to heat the clean water in the spiral pipe.

[0018] At the same time, the driving shaft drives the driving gear to rotate, the driving gear is engaged with the driven gear, the end of the spiral pipe at the top is rotated, and the plurality of spiral pipes are rotated through the transmission of the plurality of transmission members, so that the fluid in the pipeline is affected by the rotational motion, thereby changing the flow mode of the fluid and increasing the turbulence intensity. The enhancement of the turbulence can promote the contact frequency of the fluid and the pipe wall.

[0019] The outer pipe wall of the spiral pipe is heated uniformly:

[0020] The driving shaft synchronously drives the connecting rod to rotate, two groups of reciprocating lead screws rotate, and drive the transmission plate above to reciprocate in the inside of the interference box, the gas in the interference box is transported into the focal point heat pipe through the exhaust pipe and then blown out, the focal point is blown to the focal point of the light reflecting plate, the airflow blows away part of the heat at the focal point, reduces the local temperature, and the high temperature heat at the focal point is diffused to other areas of the spiral pipe, so that the temperature distribution in the frame is more uniform.

[0021] Technical effects and advantages of the present application:

[0022] 1. The present application is driven by the driving shaft to drive the driving gear to rotate, the driving gear is engaged with the driven gear, the end of the spiral pipe at the top is rotated, a plurality of transmission members are driven to rotate, the fluid in the pipe is affected by the rotational motion, so that the flow pattern of the fluid is changed, the turbulence intensity is increased, the contact frequency of the fluid and the pipe wall is promoted, the local overheating or supercooling area is reduced, the heat transfer rate is improved, and the uniformity of the water heating is improved.

[0023] 2. The present application is driven by the driving shaft to drive the connecting rod to rotate, two groups of reciprocating lead screws rotate, and drive the transmission plate above to reciprocate in the inside of the interference box, the gas in the interference box is transported into the focal point heat pipe through the exhaust pipe and then blown out, the focal point is blown to the focal point of the light reflecting plate, the airflow blows away part of the heat at the focal point, reduces the local temperature, prevents the pipe from being damaged or performance decreased due to overheating, and the high temperature heat at the focal point is diffused to other areas of the spiral pipe through the airflow blowing, reduces the temperature gradient in the axial and circumferential directions, and makes the temperature distribution more uniform, which helps to reduce the thermal stress and prolong the service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the appearance perspective view of the overall structure in the present application.

[0025] Figure 2 It is the appearance perspective view of the heat uniform assembly in the present application.

[0026] Figure 3 It is the internal structure perspective view of the frame in the present application.

[0027] Figure 4 It is the perspective structure schematic view of the driven gear and the driving gear.

[0028] Figure 5 It is the perspective view of the focal point heat pipe and the exhaust pipe in the present application.

[0029] Figure 6 It is the internal structure perspective view of the interference box in the present application.

[0030] Figure 7The process flow chart in the present application.

[0031] Reference signs are:

[0032] 1, frame; 2, glass cover plate; 3, exhaust port; 6, light reflection plate; 7, side baffle;

[0033] 41, spiral pipe; 42, water inlet pipe; 43, water inlet pipe; 44, water outlet pipe; 45, water outlet pipe; 46, transmission member; 47, driven gear; 48, driving gear;

[0034] 5, heat uniform assembly; 51, interference box; 52, connecting rod; 53, air inlet pipe; 54, focal uniform heating pipe; 55, transmission plate; 56, reciprocating screw rod; 57, exhaust pipe. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Embodiment one: please refer to Figures 1-7 As shown in the drawings, in order to solve the problem that the light reflection plate vertically installed outdoors in the prior art focuses sunlight to the focal point area of the pipe, resulting in a significant increase in the temperature of the area, increasing the temperature gradient of the local area of the heat collector, causing uneven internal heat transfer and increasing heat loss, the following solutions can be used to solve the problem.

[0037] A spiral flow channel light reflection type solar heat collector in the embodiment comprises a frame 1 and a light reflection plate 6 fixedly arranged in the frame 1. A plurality of spiral pipes 41 are arranged above the light reflection plate 6. The plurality of spiral pipes 41 are uniformly distributed above the light reflection plate 6. Side baffles 7 are fixedly arranged on the top walls on both sides of the light reflection plate 6. Both ends of the spiral pipes 41 extend to the outside of the side baffles 7. A rotating assembly for jointly rotating the plurality of spiral pipes 41 is arranged on the outside of one of the side baffles 7.

[0038] The clean water enters the water inlet pipe 43 and then enters the plurality of spiral pipes 41 through the water inlet pipe 43. The sunlight is collected by the light reflection plate 6 to heat the clean water in the spiral pipes 41.

[0039] The rotating assembly comprises a driving shaft rotatably arranged above the frame 1, an outer side of the driving shaft is fixedly provided with a driving gear 48, an outer side of the driving gear 48 is meshingly connected with a driven gear 47, the driven gear 47 is fixedly connected with an outer wall of an end portion of the uppermost spiral pipe 41, and a plurality of spiral pipes 41 are drivingly connected through a transmission member 46;

[0040] It needs to be pointed out here that the transmission member 46 is composed of two transmission wheels and a conveying belt, the transmission wheels are fixedly connected with the end portions of the spiral pipes 41, the two transmission wheels are drivingly connected through the conveying belt, the end portion of one spiral pipe 41 is driven to rotate, and the rotation of the spiral pipe 41 is transmitted to the other spiral pipes 41 through the transmission member 46;

[0041] Two sides of the frame 1 are also fixedly provided with an inlet water storage pipe 42 and an outlet water storage pipe 44, the inlet water storage pipe 42 is connected with input ends of the plurality of spiral pipes 41, and the outlet water storage pipe 44 is connected with output ends of the plurality of spiral pipes 41; an outer side of the frame 1 is inserted with an inlet water pipe 43 and connected with the inlet water storage pipe 42, and an outer side of the frame 1 is also inserted with an outlet water pipe 45 and connected with the outlet water storage pipe 44;

[0042] The driving shaft drives the driving gear 48 to rotate, the driving gear 48 is meshed with the driven gear 47, the end portion of the top spiral pipe 41 is rotated, the rotation of the spiral pipe 41 is transmitted to the other spiral pipes 41 through the plurality of transmission members 46, the fluid in the pipe is subjected to the influence of the rotational motion, so that the flow pattern of the fluid is changed, the turbulence intensity is increased, the contact frequency of the fluid and the pipe wall is promoted, the local overheating or supercooling area is reduced, the heat transfer rate is improved, and the heating uniformity is improved;

[0043] An upper side of the light collecting reflection plate 6 is provided with a heat equalizing assembly 5 for equalizing the heat of the outer side of the spiral pipe 41.

[0044] Embodiment two: please refer to Figures 1-7 As shown, there is a difference in the temperature distribution of the cross section and the circumferential direction of the conical tube heat absorption pipe, the temperature of the part close to the light inlet is low due to insufficient light or large heat loss, and the temperature of other areas is high, which causes the problem of uneven heating of the water in the pipe. The following solutions can be used to solve the problem:

[0045] The heat equalizing assembly 5 comprises a connecting rod 52 fixedly connected with the driving shaft, an end portion of the connecting rod 52 is rotatably connected with a side baffle 7 close to the inlet water pipe 43, two groups of interference boxes 51 are rotatably arranged on an outer side of the connecting rod 52, and the interference boxes 51 are fixedly connected with the frame 1, a reciprocating screw rod 56 is fixedly sleeved on an outer wall of the connecting rod 52 in the interference box 51, a transmission plate 55 is threadedly connected with an outer wall of the reciprocating screw rod 56, and the transmission plate 55 is in sliding fit with an inner wall of the interference box 51;

[0046] The driving shaft drives the connecting rod 52 to rotate, the two groups of reciprocating wire rods 56 rotate, and the transmission plates 55 above the reciprocating wire rods 56 reciprocate in the inside of the interference box 51, the gas in the interference box 51 is transported into the focal point heat pipe 54 through the exhaust pipe 57 and then blown out, and the focal point of the light reflection plate 6 is blown and processed;

[0047] The interference box 51 is provided with the air inlet pipe 53 on the top wall, the interference box 51 is connected with the exhaust pipe 57 at the output end, the two exhaust pipes 57 are connected with the focal point heat pipe 54 at the output end, and the output end of the focal point heat pipe 54 is arranged towards the focal point of the light reflection plate 6;

[0048] It should be noted that: the outer walls of the air inlet pipe 53 and the exhaust pipe 57 are provided with one-way valves, that is, the gas enters the interference box 51 through the air inlet pipe 53, is then discharged through the exhaust pipe 57, and a gas conveying cycle is formed;

[0049] The frame 1 is provided with the glass cover plate 2 on the upper side, and the exhaust port 3 is formed in the outer wall of the frame 1 corresponding to the focal point heat pipe 54;

[0050] The gas in the interference box 51 is transported into the focal point heat pipe 54 through the exhaust pipe 57 and then blown out, and the focal point of the light reflection plate 6 is blown and processed, and the blown wind is discharged through the exhaust port 3;

[0051] In the present application, it can be known from the combination of the first embodiment and the second embodiment that:

[0052] The water in the spiral pipe 41 is heated uniformly, and the outer wall of the spiral pipe 41 is heated uniformly, so that the uniformity of the water in the spiral pipe 41 is improved, that is, the rotation of the spiral pipe 41 is controlled, the turbulence intensity in the spiral pipe 41 is enhanced, the contact frequency of the fluid and the pipe wall is promoted, the local overheating or overcooling area is reduced, the heat transfer rate is improved, the uniformity of the water heating is improved, the focal point is blown and processed, the airflow blows away part of the heat of the focal point, the local temperature is reduced, the high-temperature heat of the focal point is diffused to other areas of the spiral pipe 41, and the temperature distribution in the frame is more uniform.

[0053] Working principle:

[0054] The purified water enters the inlet water pipe 43 into the inlet water pipe 42, and then enters the plurality of spiral pipes 41, respectively. The sunlight is collected by the light reflecting plate 6 to heat the purified water in the spiral pipe 41. At the same time, the driving shaft drives the driving gear 48 to rotate, and the driving gear 48 is engaged with the driven gear 47 to rotate the end of the spiral pipe 41 at the top. Through the transmission of the plurality of transmission members 46, the rotation of the plurality of spiral pipes 41 is realized, so that the fluid in the pipeline is affected by the rotational motion, thereby changing the flow pattern of the fluid, increasing the turbulence intensity, and promoting the contact frequency of the fluid and the pipe wall, reducing the local overheating or supercooling area, improving the heat transfer rate, and further improving the uniformity of heating.

[0055] At the same time, the driving shaft drives the connecting rod 52 to rotate, and the two groups of reciprocating lead screws 56 rotate to drive the transmission plate 55 above to reciprocate in the interference box 51, so that the gas in the interference box 51 is transported into the focal point heat pipe 54 through the exhaust pipe 57 and then blown out to blow the focal point of the light reflecting plate 6. The light reflecting plate 6 focuses the sunlight to the focal point area of the spiral pipe 41, resulting in a significant increase in temperature in this area. The airflow blowing can take away part of the heat at the focal point, reducing the local temperature, preventing the pipe material from being damaged or performance decreased due to overheating, and the airflow blowing can spread the high temperature heat at the focal point to other areas of the spiral pipe 41, reducing the axial and circumferential temperature gradient, and making the temperature distribution more uniform, which helps to reduce the thermal stress and prolong the service life of the equipment.

[0056] The preferred embodiments disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the specification. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A spiral flow channel concentrating solar collector, comprising a frame (1) and a concentrating reflector (6) fixedly disposed therein, wherein multiple spiral tubes (41) are disposed above the concentrating reflector (6), and side baffles (7) are fixedly disposed on the top walls of both sides of the frame (1) located on the concentrating reflector (6), and both ends of the spiral tubes (41) extend to the outside of the side baffles (7), characterized in that: One of the side baffles (7) is provided with a rotating assembly for rotating multiple spiral tubes (41) together. The rotating assembly includes a drive shaft that is rotatably disposed above the frame (1). A drive gear (48) is fixedly disposed on the outside of the drive shaft. The drive gear (48) is meshed with a driven gear (47) on its outer side. The driven gear (47) is fixedly connected to the outer wall of the uppermost spiral tube (41). Multiple spiral tubes (41) are connected by transmission components (46). A heat equalization component (5) for equalizing the heat on the outer side of the spiral tube (41) is provided above the light-concentrating reflector (6).

2. The spiral flow channel concentrating solar collector according to claim 1, characterized in that: The frame (1) is also fixedly provided with an inlet water pipe (42) and an outlet water pipe (44) on both sides. The inlet water pipe (42) is connected to the input end of the multiple spiral pipes (41), and the outlet water pipe (44) is connected to the output end of the multiple spiral pipes (41).

3. A spiral flow channel concentrating solar collector according to claim 2, characterized in that: An inlet pipe (43) is inserted into the outside of the frame (1) and is connected to the inlet water storage pipe (42). An outlet pipe (45) is also inserted into the outside of the frame (1) and is connected to the outlet water storage pipe (44).

4. A spiral flow channel concentrating solar collector according to claim 1, characterized in that: The heat equalization assembly (5) includes a connecting rod (52) fixedly connected to the drive shaft. The end of the connecting rod (52) is rotatably connected to a side baffle (7) near the water inlet pipe (43). Two sets of interference boxes (51) are rotatably arranged on the outside of the connecting rod (52), and the interference boxes (51) are fixedly connected to the frame (1).

5. A spiral flow channel concentrating solar collector according to claim 4, characterized in that: The connecting rod (52) is fixedly sleeved on the outer wall inside the interference box (51) with a reciprocating screw (56). The outer wall of the reciprocating screw (56) is threaded with a transmission plate (55), and the transmission plate (55) slides with the inner wall of the interference box (51).

6. A spiral flow channel concentrating solar collector according to claim 5, characterized in that: An air inlet pipe (53) is inserted into the top wall of the interference box (51). An exhaust pipe (57) is connected to the output end of the interference box (51). The output ends of the two exhaust pipes (57) are connected to a focal heat equalization pipe (54). The output end of the focal heat equalization pipe (54) is set towards the focal point of the focusing reflector (6).

7. A spiral flow channel concentrating solar collector according to claim 6, characterized in that: An exhaust vent (3) is provided on the outer wall of the frame (1) corresponding to the focal heat distribution pipe (54); a glass cover plate (2) is installed on the top of the frame (1).

8. A spiral flow channel concentrating solar collector according to any one of claims 1-7, characterized in that: The steps for heating purified water using this spiral flow concentrating solar collector are as follows: Improve the uniformity of water heating inside the spiral tube (41): After the purified water enters the water storage pipe (42) through the water inlet pipe (43), it then enters multiple spiral pipes (41). The heat-absorbing coating on the spiral pipe (41) absorbs sunlight and converts it into heat energy to heat the purified water inside the spiral pipe (41). At the same time, the drive shaft drives the drive gear (48) to rotate, and the drive gear (48) meshes with the driven gear (47) to realize the rotation of the end of the spiral tube (41) at the top. Through the transmission of multiple sets of transmission components (46), multiple spiral tubes (41) rotate, causing the fluid to be affected by the rotational motion in the pipe, thereby changing the flow pattern of the fluid and increasing the intensity of turbulence. The enhancement of turbulence can promote the contact frequency between the fluid and the pipe wall. Improve the uniformity of heating on the outer wall of the spiral tube (41): The drive shaft synchronously drives the connecting rod (52) to rotate, and the two sets of reciprocating screws (56) rotate, driving the transmission plate (55) above it to move back and forth inside the interference box (51). The gas inside the interference box (51) is transported to the focal heat pipe (54) through the exhaust pipe (57) and then blown out, blowing air onto the focal point of the focusing reflector (6). The airflow carries away some of the heat at the focal point, reducing the local temperature. The high temperature heat at the focal point diffuses to other areas of the spiral tube (41), making the temperature distribution inside the frame (1) more uniform.

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