CN220135753U

CN220135753U - Anti-freezing solar flat-plate heat pipe collector

Info

Publication number: CN220135753U
Application number: CN202320969625.3U
Authority: CN
Inventors: 沈延飞; 韩荣涛; 华玉石; 苏万振; 薛浩
Original assignee: DEZHOU JINHENG NEW ENERGY CO LTD
Current assignee: DEZHOU JINHENG NEW ENERGY CO LTD
Priority date: 2023-04-26
Filing date: 2023-04-26
Publication date: 2023-12-05
Anticipated expiration: 2033-04-26

Abstract

The utility model belongs to the technical field of solar flat-plate heat collectors, and particularly relates to an antifreezing solar flat-plate heat pipe heat collector. The heat-insulating glass comprises a frame, a back plate, a glass cover plate, a pressing strip, bottom heat insulation, side heat insulation, a heat absorbing plate, a metal heat pipe, a metal runner and a silica gel air bag pipe. The anti-freezing solar flat-plate heat pipe collector is characterized in that: a closed square shell is formed by a frame, a back plate, a glass cover plate and a pressing strip, and bottom heat preservation and side heat preservation are respectively placed at the bottom and the side. The metal heat pipe is welded on the heat absorbing plate, and the condensing end of the metal heat pipe is inserted into the sleeve of the metal runner. Compared with the traditional flat-plate heat pipe collector, the utility model has the advantage that the metal runner can be used for water. The anti-freezing solvent is filled in the metal heat pipe to serve as a working medium, the silica gel air bag pipe is placed in the metal flow passage, when water in the metal flow passage is frozen when meeting cold, the silica gel air bag pipe contracts, the volume of expansion of the frozen water is absorbed, and the metal flow passage is prevented from being damaged due to the expansion of the frozen water.

Description

Anti-freezing solar flat-plate heat pipe collector

Technical Field

The utility model belongs to the field of solar flat-plate heat collectors, and particularly relates to an antifreezing solar flat-plate heat pipe heat collector.

Background

Solar energy is increasingly being widely used as clean and perpetual energy. The solar water heater can convert solar light energy into heat energy, is environment-friendly and energy-saving, and has become popular. The heat collector of the solar water heater is divided into a vacuum tube heat collector and a flat plate heat collector. The vacuum tube collector has better antifreezing effect because the vacuum layer is arranged between the inner tube and the outer tube of the vacuum tube. However, the vacuum tube is broken, the glass is fragile, and the maintenance cost is high. The flat plate collector has the characteristics of safety, pressure bearing and high heat collecting efficiency, and is more and more popular with users. However, in the northern area, the heat preservation effect of the flat plate collector is poor, so that the flat plate collector cannot be directly washed in order to prevent the flat plate collector from being frozen out, most manufacturers adopt a way of running antifreeze in a runner to solve the problem of freezing prevention of the flat plate collector, and the system is required to perform secondary heat exchange through the heat exchanger, so that the system is complex and the investment cost is high. Limiting the use of flat plate collectors in north.

Disclosure of Invention

The utility model designs an anti-freezing solar flat heat pipe collector for solving the anti-freezing problem of a flat heat collector.

The utility model adopts the technical proposal for solving the technical problems in the prior art that:

an antifreezing solar flat-plate heat pipe collector. Comprises a frame, a back plate, a glass cover plate, a pressing strip, bottom heat preservation, side heat preservation, a heat absorbing plate, a metal heat pipe, a metal runner, a silica gel air bag pipe the heat exchange medium of the metal heat pipe, the evaporating end of the metal heat pipe, the condensing end of the metal heat pipe, the main pipe of the metal flow passage and the sleeve of the metal flow passage. An antifreezing solar flat-plate heat pipe collector is characterized in that: the frame is formed into a square shape by rivets or corner blocks. The backboard is inserted into the groove of the frame and is pressed and fixed. The glass cover plate is placed on the frame and fixed on the frame through the pressing strip. The bottom heat preservation is clung to the backboard. The side heat preservation is arranged at the inner side of the periphery of the frame. The evaporating end of the metal heat pipe is welded on the heat absorbing plate. And filling a small amount of heat exchange working medium of the metal heat pipe into the metal heat pipe, and vacuumizing. The condensing end of the metal heat pipe is inserted into the metal runner sleeve in the metal runner. The silica gel air bag tube is placed in the main metal runner tube in the metal runner. The metal runner, the metal heat pipe and the heat absorbing plate are combined into a whole, and the metal heat pipe is tightly attached to the bottom for heat preservation. The heat absorbing plate adopts a black film or a blue film heat absorbing film layer. The utility model has the advantages and positive effects that: the gravity heat pipe is used as a heat transfer carrier, and the heat absorbing plate absorbs sunlight heat and transfers the heat to the metal heat pipe. The heat exchange working medium of the metal heat pipe in the evaporation end of the metal heat pipe evaporates when encountering heat, reaches the condensation end of the metal heat pipe, and transfers heat to water in the metal flow passage through the metal flow passage sleeve. After the heat exchange working medium of the metal heat pipe is condensed, the heat is returned to the evaporation end of the metal heat pipe to continuously absorb heat, and the heat transfer efficiency is higher. The metal heat pipe is filled with antifreezing solvent as working medium. The metal runner is walked water, places the silica gel gasbag pipe in the metal runner, and when water in the metal runner meets cold icing, the silica gel gasbag pipe contracts, absorbs the volume that expands after the water freezes, prevents to cause the metal runner damage because of the expansion after the water freezes.

Drawings

Fig. 1, 2, 3 and 4 are schematic structural views of the present utility model.

FIG. 1 is a front view;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a front view of the absorber plate of FIG. 1 with the glass cover plate, bead removed;

FIG. 4 is a block diagram of a metal heat pipe;

fig. 1, 2, 3, 4: 1. a back plate; 2. a frame; 3. bottom heat preservation; 4. side heat preservation; 5. pressing strips; 6. a metal runner; 7. a heat absorbing plate; 8. a metal heat pipe; 9. a glass cover plate; 10. a silica gel air bag tube; 11. a metal heat pipe heat exchange working medium; 12. a condensing end of the metal heat pipe; 13. a metal heat pipe evaporation end; 14. a metal runner sleeve; 15. a metal runner main pipe.

Description of the embodiments

For a further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are illustrated in the accompanying drawings in which:

in fig. 1 and 2, the frame 2 is formed into a square shape by rivets or corner blocks. The backboard 1 is inserted into the groove of the frame 2 and is pressed and fixed. The glass cover plate 9 is placed on the frame 2 and is fixed on the frame 2 through the pressing bar 5 to form a square shell.

In fig. 2, the bottom insulation 3 is tightly attached to the back plate 1. The side heat preservation 4 is arranged at the inner side of the periphery of the frame 2. The metal heat pipe evaporation end 13 in the metal heat pipe 8 is closely attached to and welded on the heat absorbing plate 7.

In fig. 2, 3 and 4, the metal heat pipe condensation end 12 of the metal heat pipe 8 is inserted into the metal runner sleeve 14 of the metal runner 6. The silica gel air bag tube 10 is placed inside the metal runner main tube 15 in the metal runner 6. The metal runner 6, the metal heat pipe 8 and the heat absorbing plate 7 are combined into a whole. The metal heat pipe 8 is tightly attached to the bottom heat insulation 3. The heat absorbing plate 7 adopts a black film or a blue film heat absorbing film layer.

In fig. 4, the metal heat pipe 8 is a gravity heat pipe, and is made of copper or aluminum. The diameters of the metal heat pipe evaporation end 13 and the metal heat pipe condensation end 12 are different. A small amount of metal heat pipe heat exchange working medium 11 is filled in the metal heat pipe 8 and vacuumized.

The working principle of the utility model is as follows: referring to fig. 1, 2, 3 and 4, sunlight irradiates the heat absorbing plate 7 through the glass cover plate 9, and the heat absorbing plate 7 absorbs the sunlight heat and transfers the heat to the metal heat pipe 8. The metal heat pipe 8 is a gravity heat pipe, the metal heat pipe heat exchange working medium 11 in the metal heat pipe evaporation end 13, and the metal heat pipe heat exchange working medium 11 is an antifreezing solvent. And the heated gas is evaporated. The gas rises to the condensing end 12 of the metal heat pipe, through the metal runner sleeve 14, transferring heat to the water in the metal runner 6. After the heat exchange working medium 11 of the metal heat pipe is condensed, the condensed heat flows back to the evaporating end 13 of the metal heat pipe to continue absorbing heat. And the heat transfer efficiency is higher by repeating the steps. The water flows in the metal runner 6, the silica gel air bag tube is placed in the metal runner 6, when the water in the metal runner 6 is frozen when meeting cold, the silica gel air bag tube 10 contracts, the volume expanded after the water is frozen is absorbed, and the metal runner 6 is prevented from being damaged due to the expansion after the water is frozen.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the utility model in any way, but any simple modification, equivalent variation and modification of the above embodiments according to the technical principles of the present utility model are within the scope of the technical solutions of the present utility model.

Claims

1. An antifreezing solar flat-plate heat pipe collector comprises a frame (2), a back plate (1), a glass cover plate (9), a pressing strip (5), a bottom heat preservation (3), a side heat preservation (4), a heat absorption plate (7), a metal heat pipe (8), a metal runner (6), a silica gel air bag pipe (10), a metal heat pipe heat exchange working medium (11), a metal heat pipe evaporation end (13), a metal heat pipe condensation end (12), a metal runner main pipe (15) and a metal runner sleeve (14); an antifreezing solar flat-plate heat pipe collector is characterized in that: the frame (2) is formed into a square shape through rivets or corner blocks, the back plate (1) is inserted into a groove of the frame (2) and is fixedly pressed, the glass cover plate (9) is placed on the frame (2) and is fixed on the frame (2) through the pressing strip (5), the bottom heat preservation (3) is tightly attached to the back plate (1), and the side heat preservation (4) is placed on the inner side of the periphery of the frame (2); the metal heat pipe evaporation end (13) in the metal heat pipe (8) is tightly attached to and welded on the heat absorption plate (7), the metal heat pipe heat exchange working medium (11) is filled in the metal heat pipe (8), the metal heat pipe condensation end (12) in the metal heat pipe (8) is inserted into the metal runner sleeve (14) in the metal runner (6), the silica gel air bag pipe (10) is placed into the metal runner main pipe (15) in the metal runner (6), and the metal runner (6) and the metal heat pipe (8) are combined into a whole and are placed on the bottom heat insulation (3).

2. The antifreeze solar flat-panel heat pipe collector of claim 1, wherein: the heat exchange working medium (11) of the metal heat pipe filled in the metal heat pipe (8) is an antifreezing solvent.

3. The antifreeze solar flat-panel heat pipe collector of claim 1, wherein: the silica gel air bag tube (10) is placed in the metal runner main tube (15) in the metal runner (6).

4. The antifreeze solar flat-panel heat pipe collector of claim 1, wherein: the metal heat pipe (8) is a gravity heat pipe, the material is copper or aluminum, and the diameters of the evaporation end (13) and the condensation end (12) of the metal heat pipe are different.