CN211601158U

CN211601158U - Flat-plate solar heat collector

Info

Publication number: CN211601158U
Application number: CN201922130086.0U
Authority: CN
Inventors: 苏士强; 刘淑军; 冯琪; 李晓辰; 张亚丽; 支星星
Original assignee: Shandong Linuo Paradigma Co Ltd
Current assignee: Shandong Linuo Paradigma Co Ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-09-29
Anticipated expiration: 2029-12-03

Abstract

The utility model relates to a solar water heater field, concretely relates to flat-plate solar collector. The utility model aims to solve the problem of providing a flat-plate solar collector, which has high heat absorption efficiency and low manufacturing cost and comprises a collector shell, wherein a glass cover plate is arranged at the upper part of the collector shell, a plurality of metal runner pipes which are distributed side by side are arranged in the collector shell, and the outer wall of each metal runner pipe is coated with a heat absorption coating; and a reflector is arranged below the metal runner pipe.

Description

Flat-plate solar heat collector

Technical Field

The utility model relates to a solar water heater field, concretely relates to flat-plate solar collector.

Background

The conventional solar water heater is distributed in every household in China, the country advocates low-carbon environment-friendly life, a plurality of cities forcibly install the balcony wall-mounted solar water heater, and the heat collection units of the conventional main balcony wall-mounted solar water heater mainly comprise an all-glass vacuum tube type heat collector and a flat plate type solar heat collector, but the all-glass vacuum tube type heat collector has high manufacturing cost, and the vacuum tube is easy to explode, so that great potential safety hazard exists; the flat plate type heat collector is more and more popular in the market due to the lower price and the perfect combination with the building, but the flat plate type heat collector has the problems of lower heat efficiency, severe dependence on electric heating and influence on user experience, so that the market urgently needs a novel flat plate type solar heat collector which has high heat absorption efficiency, lower manufacturing cost and perfect combination with the building.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a flat-plate solar collector, the heat absorption is efficient and the cost is low.

The utility model discloses a realize through following technical scheme:

a flat-plate solar collector comprises a collector shell, wherein a glass cover plate is arranged at the upper part of the collector shell, a plurality of metal runner pipes which are distributed side by side are arranged in the collector shell, and the outer wall of each metal runner pipe is coated with a heat absorption coating; and a reflector is arranged below the metal runner pipe.

Furthermore, the reflector is a reflective aluminum plate, and the upper surface of the reflector is provided with a reflective coating.

Further, the heat collector shell comprises an aluminum profile frame and a galvanized back plate, the galvanized back plate is fixed to the lower portion of the aluminum profile frame, and a heat insulation layer is arranged between the reflecting plate and the galvanized back plate.

Furthermore, an upper collecting pipe and a lower collecting pipe are arranged in the heat collector shell, the side wall of the upper collecting pipe is communicated with the upper ends of all the metal flow passage pipes, and the side wall of the lower collecting pipe is communicated with the lower ends of all the metal flow passage pipes.

Further, the metal runner pipe is an aluminum alloy runner pipe; the glass cover plate is non-coated low-iron ultra-white cloth grain toughened glass.

Compared with the prior art, the utility model the beneficial effect who gains as follows:

1. the heat absorption coating is coated on the outer wall of the metal runner pipe, and the metal runner pipe is used as a heat absorption device and also as a part of a runner, and directly conducts the sunlight absorbed to the medium in the heat absorption metal runner pipe, so that the contact area of the heat absorption coating and the medium of the heat absorption metal runner pipe is increased, secondary heat exchange is omitted, and the heat absorption efficiency is greatly improved;

2. the reflector can enable sunlight to be gathered on the outer surface of the heat-absorbing metal runner pipe, the surface of the reflector is provided with a reflective coating, and the reflector has high reflectance, so that the sunlight can be effectively collected, the heat-absorbing coating on the outer surface of the metal runner pipe can receive illumination without dead angles, and the heat-absorbing efficiency is improved;

3. the utility model abandons the copper pipe flow passage with higher cost and changes the aluminum pipe flow passage with lower cost, thereby avoiding the mutual corrosion risk among different materials, greatly prolonging the service life of the heat collector while reducing the cost and reducing the later maintenance cost;

4. the utility model discloses integrate the high heat absorption efficiency of compact solar water heater and the advantage of balcony wall-hanging flat plate collector and building perfect adaptation, increase user experience, can effectively solve the low problem of current balcony wall-hanging flat plate water heater thermal efficiency, be the poor solution of later stage balcony wall-hanging solar water heater inefficiency, user experience.

Drawings

Fig. 1 is a schematic view of a flat-plate solar collector according to the present invention;

fig. 2 is a schematic plan view of the flat-plate solar collector of the present invention;

FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;

in the figure: 1. the solar heat collector comprises a metal runner pipe, 2, a reflector, 31, an upper collecting pipe, 32, a lower collecting pipe, 4, a galvanized back plate, 5, an aluminum profile frame, 6, a glass cover plate, 7 and a heat insulation layer.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. The described embodiments are only some embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 1, 2 and 3, the flat-plate solar collector comprises a plurality of metal runner pipes 1, a reflective aluminum plate 2, an upper header 31, a lower header 32, a galvanized back plate 4, an aluminum profile frame 5, a glass cover plate 6 and a heat insulation layer 7. The galvanized back plate 4 plays a sealing role, and the bottom of the aluminum profile frame 5 is fixedly installed through the connecting piece to form a heat collector shell. The glass cover plate 6 is non-coated low-iron ultra-white cloth grain toughened, has high transmittance, plays a role in protecting a heat absorption film layer and increasing sunlight transmission, and is fixed on the upper part of the aluminum profile frame 5 by special sealant. The heat collector comprises a heat collector shell, a plurality of metal runner pipes 1, a plurality of heat absorbing plates, a plurality of heat absorbing coatings and a plurality of metal runner pipes 1, wherein the metal runner pipes 1 are arranged in the heat collector shell side by side, each metal runner pipe 1 is an aluminum alloy runner pipe, the aluminum alloy runner pipe is formed by welding aluminum alloy heat absorbing plates in a curling mode, the outer surface of each metal pipe is plated with the heat absorbing coating, and the surface heat absorbing coating has high absorption ratio and low emission ratio and can play a role. The reflecting plate 2 is located on the lower portion of the metal runner pipe 1, four sides of the reflecting plate are fixed on the aluminum profile frame 5, the reflecting plate 2 is a flat plate type or arc-shaped reflecting aluminum plate, the upper surface of the reflecting plate is provided with a reflecting coating, high reflectance is required, sunlight can be effectively collected, the metal runner pipe 1 is free of dead corners to receive illumination, and heat absorption efficiency is improved. The heat preservation layer 7 is arranged between the reflecting plate 2 and the galvanized back plate, and the heat preservation layer 7 plays a role in heat preservation and reduces the heat loss of the flat-plate solar collector.

The side wall of the upper header 31 is communicated with the upper ends of all the metal flow passage tubes 1, the side wall of the lower header 32 is communicated with the lower ends of all the metal flow passage tubes 1, so that a sealed flow passage is formed, the upper header and the lower header are used as medium inlets and outlets, 4 inlets and 2 inlets can be provided, in the embodiment, the lower header is used as a medium inlet, and the upper header is used as a medium outlet.

The specific working process of the invention is as follows:

cold medium enters from a medium inlet of the lower collecting pipe 32 and is heated by the plurality of metal runner pipes 1, hot medium flows out from a medium outlet of the upper collecting pipe 31, the hot medium exchanges heat through the water tank connected with the heat collector to heat water in the water tank, and the cooled medium is reheated by the heat collector, so that a cycle is formed.

In the circulation process, part of sunlight irradiates to the heat absorption coating on the surface of the metal runner pipe 1 through the glass cover plate 6, the other part of sunlight irradiates to the reflector plate 2 to form secondary reflection to irradiate to the heat absorption coating on the surface of the metal runner pipe 1, and the heat absorption coating absorbs heat and then transfers the heat to the medium in the metal runner pipe 1, so that the medium is heated, and the heat absorption efficiency is greatly improved.

The utility model discloses a direct heat transfer has increased the secondary heat absorption process after the reflecting plate reflection, and heat absorption efficiency promotes greatly, and the higher copper runner of conventional expense can be replaced with other cheap metal material, greatly reduced manufacturing cost, can realize the welding of homogeneous metal, reduced dissimilar metal corrosion problem, prolonged heat collector life, can effectively improve user experience.

Claims

1. A flat-plate solar collector comprises a collector shell, wherein a glass cover plate is arranged at the upper part of the collector shell, and a plurality of metal runner pipes which are distributed side by side are arranged in the collector shell; a reflector is arranged below the metal runner pipe; the reflector is a reflective aluminum plate, and the upper surface of the reflector is provided with a reflective coating.

2. The flat-plate solar collector according to claim 1, wherein the collector shell comprises an aluminum profile frame and a galvanized back plate, the galvanized back plate is fixed on the lower portion of the aluminum profile frame, and a heat insulation layer is arranged between the reflector and the galvanized back plate.

3. The flat-plate solar collector according to claim 2, wherein an upper header and a lower header are provided in the collector shell, the side wall of the upper header communicates with the upper ends of all the metal runner tubes, and the side wall of the lower header communicates with the lower ends of all the metal runner tubes.

4. The flat-panel solar collector according to any of claims 1-3, wherein the metal runner tube is an aluminum alloy runner tube; the glass cover plate is non-coated low-iron ultra-white cloth grain toughened glass.