CN211502977U

CN211502977U - Solar heating device

Info

Publication number: CN211502977U
Application number: CN201922127026.3U
Authority: CN
Inventors: 薛会文; 薛会斌
Original assignee: Hebei Vic Ryan Solar Energy Development Co ltd
Current assignee: Hebei Vic Ryan Solar Energy Development Co ltd
Priority date: 2019-12-02
Filing date: 2019-12-02
Publication date: 2020-09-15
Anticipated expiration: 2029-12-02

Abstract

The utility model discloses a solar heating device, which comprises a first air channel and a second air channel which are arranged outdoors, wherein the first air channel and the second air channel are arranged in parallel and are communicated through a plurality of straight-through solar vacuum glass heat pipes which are arranged in parallel at intervals, one end of the first air channel is provided with a cold air inlet, the other end of the first air channel is closed, one end of the second air channel is provided with a hot air outlet, and the other end of the second air channel is closed; and a heat storage pipe is arranged in the straight-through solar vacuum glass heat pipe. The utility model discloses solar heating device flows and flows through its inside air heating by first wind channel through solar energy vacuum glass heat pipe, produces the hot-air, sends the second wind channel in, discharges through hot air outlet and heats indoor, simple structure, and is with low costs, and heat exchange efficiency is high, has important spreading value.

Description

Solar heating device

Technical Field

The utility model relates to a solar heating technical field, concretely relates to solar heating device.

Background

At present, a solar hot air heating system of a heat pipe vacuum heat collecting pipe for assisting heating by solar energy is used for assisting heating in daytime of a heating area, water in a water tank is heated by a heat pipe, the water flows in the heating system, and heat is exchanged with indoor air by a heat exchanger to heat the air, so that the air heating system is used as an air heat collector. However, this method requires a pressurizing pump, a water tank, and a heat exchanger such as a radiator, and is complicated in structure and high in cost, and the use of water as a heat transfer medium also solves the problems of freezing prevention in winter and corrosion of the header by water.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a solar heating device aiming at the technical defect existing in the prior art.

For realizing the utility model discloses a technical scheme that the purpose adopted is:

a solar heating device comprises a first air channel and a second air channel which are arranged outdoors and arranged at intervals up and down, wherein the first air channel and the second air channel are arranged in parallel and are communicated through a plurality of straight-through solar vacuum glass heat pipes which are arranged at intervals in parallel, one end of the first air channel is provided with a cold air inlet, the other end of the first air channel is closed, one end of the second air channel is provided with a hot air outlet, and the other end of the second air channel is closed; a heat storage pipe is arranged in the straight-through solar vacuum glass heat pipe; the straight-through solar vacuum glass heat pipe comprises an outer glass pipe, an inner glass pipe and a selective heat absorption coating coated on the outer surface of the inner glass pipe, a closed vacuum layer is formed between the outer glass pipe and the inner glass pipe, openings at two ends of the inner glass pipe form a straight-through structure, and heat insulation layers are coated outside the first air channel and/or the second air channel.

And the side walls of the first air duct and the second air duct are provided with plug ports which are in plug connection with the straight-through solar vacuum glass heat pipe.

The utility model discloses solar heating device flows and flows through its inside air heating by first wind channel through solar energy vacuum glass heat pipe, produces the hot-air, sends the second wind channel in, discharges through hot air outlet and heats indoor, simple structure, and is with low costs, and heat exchange efficiency is high, has important spreading value.

Drawings

FIG. 1 is a schematic view of a solar heating device;

FIG. 2 is a schematic structural diagram of a straight-through solar vacuum glass heat pipe;

FIG. 3 is a schematic diagram of a phase change heat storage tube.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-3, a solar heating device comprises a first air channel 1 arranged outdoors for receiving cold air from indoors and a second air channel 2 for discharging formed hot air indoors, wherein the first air channel and the second air channel are arranged in parallel, the first air channel and the second air channel are communicated through a plurality of straight-through solar vacuum glass heat pipes 3 arranged in parallel at intervals, one end of the first air channel is provided with a cold air inlet 11, the other end of the first air channel is closed, one end of the second air channel is provided with a hot air outlet 21, and the other end of the second air channel is closed; the straight-through solar vacuum glass heat pipe 3 is internally provided with a phase change heat storage pipe 38 made of a phase change material.

The outer surface of the phase change heat storage tube 38 is in close contact with the inner surface of the straight-through solar vacuum glass heat pipe 3 through uniform heat conducting silica gel to transfer heat.

Specifically, the straight-through solar vacuum glass heat pipe adopts the prior art, such as the technology disclosed in patent CN101256033A, for example, the straight-through solar vacuum glass heat pipe includes a transparent outer glass pipe 33, an inner glass pipe 34, and a selective heat absorption coating 35 (such as widely used sputtered multilayer aluminum-nitrogen/aluminum AL-N/AL) coated on the outer surface of the inner glass pipe, a vacuum layer 36 with two closed ends is formed between the outer glass pipe and the inner glass pipe, the two ends of the inner glass pipe are open to form a straight-through structure, an air channel 37 is formed inside the phase change heat storage pipe 38, cold air in a first air channel flows upwards into a second air channel, and during the flowing process, the cold air is heated by heat absorption of the solar vacuum glass heat pipe, and is sent to the second air channel to form hot air, and is sent to the indoor space to achieve heating. The outer glass tube 33 and the inner glass tube 34 are made of borosilicate glass 3.3.

The phase change heat storage tube 38 may be made of phase change material PCM, for example, the existing phase change material PCM may be loaded into a space between an inner tube and an outer tube of a double-layer glass tube or a metal tube, both ends of the space between the inner tube and the outer tube are sealed, and then loaded into an inner glass tube of a straight-through solar vacuum glass heat tube, as shown in fig. 3, the phase change heat storage tube includes an outer tube 380, an inner tube 382, a certain amount of PCM phase change material is loaded into a space 383 between the inner tube and the outer tube, and then both ends are welded and sealed by a sealing ring or a sealing ring 381, and a wind channel 37 is formed.

In addition, the phase change heat storage pipe 38 made of the phase change material is arranged on the inner layer of the straight-through type solar vacuum glass heat pipe, so that heat absorption in daytime can be realized, heat is stored by the phase change heat storage pipe 38 after heat absorption, the outdoor air temperature is low at night, and the air is heated by phase change heat release of the phase change material of the phase change heat storage pipe 38, so that hot air with corresponding temperature can be provided indoors to a certain extent, which is certainly not higher than daytime.

Wherein the phase change material is an energy storage material; at normal temperature, the phase-change material is in a solid state; in the daytime, when solar energy is used for heating, the phase-change material is heated at the same time, and is changed from a solid state to a liquid state, so that a large amount of heat energy is stored; solar energy can not be utilized at night, the temperature begins to drop, when the temperature drops to a phase change point, the phase change material begins to change phase from a liquid state to a solid state, a large amount of absorbed heat energy is released to exchange heat with air in a pipeline, and continuous heating by utilizing the phase change material is realized.

The phase-change material is inorganic phase-change material, organic phase-change material or phase-change material without combination of inorganic substance and organic substance. For example, inorganic salts, polyols and cross-linked high-density polyethylene, phase-change materials with low temperature and good heat storage performance are mostly adopted in buildings and can be purchased from a plurality of domestic production plants, and the phase-change temperature of the phase-change materials can meet the requirements of the temperature in winter in the north.

It should be noted that the phase change material of the present invention can be a corresponding phase change material available in the prior art, such as paraffin, alcohol, silica gel, molten salt or hydrate of salt. This is a conventionally known technique, and the detailed description thereof is not known, and the loading amount thereof is designed in a specific case.

The first air duct and/or the second air duct can be made of plastic pipes or metal pipes and the like, and the outside of the first air duct and/or the second air duct is coated with an insulating layer so as to ensure the temperature of hot air heating and avoid the influence of external supercooled air heat exchange.

Preferably, the cross section of the first air duct or the second air duct may be rectangular, but may also be cylindrical or have another geometric shape in cross section, and is not limited in particular.

The straight-through solar vacuum glass heat pipe 3 can also be realized by directly adopting a heat pipe vacuum heat collecting pipe sold on the market, the phase change heat storage pipe 38 is arranged in the straight-through solar vacuum glass heat pipe, the outer wall of the phase change heat storage pipe 38 is in contact with the inner wall of the inner glass pipe, the phase change heat storage pipe 38 is sleeved in the straight-through solar vacuum glass heat pipe, and thus air flows through a central through hole of the phase change heat storage pipe 38 to realize heating.

In the concrete realization, hot air outlet level can install on the upper portion of wall to the realization is from indoor upper portion space hot-blast, cold wind entry can install in the lower part of wall to connect the pipeline fan, in order to realize from indoor lower part space, send out indoor cold wind to first wind channel, realize the heat transfer circulation.

During heating, a plurality of through solar vacuum glass heat pipes receive sunlight irradiation, sunlight projects to the outer side of the inner glass pipe, heat energy converted after radiation energy is absorbed by the selective absorption coating is transmitted to the phase change heat storage pipe 38 for energy storage, the heat energy is transmitted to the inside cold flowing air from the first air channel, finally, heat air is formed, and then the heat air is discharged to the indoor for heating through the hot air outlet of the second air channel, so that heating is realized, the cold air at night is in contact with the phase change heat storage pipe 38 for heat exchange, and the cold air flows out after the heat air is formed.

To sum up, the utility model discloses solar heating device flows through-type solar energy vacuum glass heat pipe and flows through its inside air heating by first wind channel, produces the hot-air, sends to the second wind channel in, discharges through hot air outlet and heats indoor, when having realized the heating, simple structure, it is with low costs, heat exchange efficiency is high, has important spreading value.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A solar heating device is characterized by comprising a first air channel and a second air channel which are arranged outdoors and arranged at intervals up and down, wherein the first air channel and the second air channel are arranged in parallel and are communicated through a plurality of straight-through solar vacuum glass heat pipes arranged at intervals in parallel, one end of the first air channel is provided with a cold air inlet, the other end of the first air channel is closed, one end of the second air channel is provided with a hot air outlet, and the other end of the second air channel is closed; the straight-through solar vacuum glass heat pipe is internally provided with a heat storage pipe: the straight-through solar vacuum glass heat pipe comprises an outer glass pipe, an inner glass pipe and a selective heat absorption coating coated on the outer surface of the inner glass pipe, a closed vacuum layer is formed between the outer glass pipe and the inner glass pipe, and openings at two ends of the inner glass pipe form a straight-through structure; and the first air duct and/or the second air duct are/is externally coated with a heat insulation layer.

2. The solar heating device according to claim 1, wherein the side walls of the first air duct and the second air duct are formed with insertion ports for inserting and connecting with the straight-through solar vacuum glass heat pipe.