CN201072242Y - Parallel type aluminum solar thermal collector with fins - Google Patents

Abstract

The utility model relates to a parallel solar collector provided with fins and made of aluminum, which comprises a glass vacuum tube and a metal heat conduction pipe provided with fins. The utility model is characterized in that: the utility model is provided with an integrative pipe for water inlet and water outlet and a cycle water inlet pipe that is connected with one end of the water inlet pipe of the integrative pipe for water inlet and water outlet, and the water inlet for the cycle water inlet pipe is at the same direction with the water outlet of the integrative pipe for water inlet and water outlet and the integrative pipe for water inlet and water outlet is provided with a plurality of branch orifices connected with the metal heat conduction pipe provided with fins; the metal heat conduction pipe provided with fins is made of aluminum and is provided with a water stop sheet; the open end of the metal heat conduction pipe provided with fins is connected with the branch orifices of the integrative pipe for water inlet and water outlet through rubber washers and screw caps, the share wall of the integrative pipe for water inlet and water outlet is corresponding to the water stop sheet in the middle of the metal heat conduction pipe and the integrative pipe for water inlet and water outlet and the cycle water inlet pipe are arranged in a heat preservation cover. The utility model has simple and reasonable structure, easy production, convenient installation and good heat collecting effect.

Description

Aluminum finned parallel solar collector

technical field

The utility model relates to a heat collecting tube for a solar water heater, in particular to the structure of a metal liner type vacuum glass heat collecting tube, which belongs to the technical field of solar water heaters.

Background technique

Solar water heaters have been widely used in the lives of urban and rural people. Solar heat collectors (collector tubes) are important components of solar water heaters. The heat absorption and heat preservation performance of solar heat collectors is directly related to the quality of solar water heaters. The heat collecting tubes of existing solar water heaters mainly contain two categories: one is a direct displacement heat collector, and the other is an indirect displacement heat collector. The direct displacement type collector conducts heat through the outer shell through vacuum isolation, and the inner tank receives heat and directly exchanges energy with the medium, so that the medium can obtain heat energy. For example, the glass vacuum heat collection tube is composed of an inner glass tube with a heat-absorbing coating and a transparent outer glass tube, and there is a vacuum chamber between the inner glass tube and the outer glass tube. Sunlight shines on the inner glass tube through the transparent outer glass tube, and the inner glass tube receives solar heat energy and transfers the received heat energy to the water. Traditional solar water heaters generally use a direct-displacement heat collector. A number of glass vacuum heat collecting tubes are plugged into the lower side of the water storage tank, and the open ends of the vacuum heat collecting tubes are connected to the inner cavity of the water storage tank. The water in the glass vacuum heat collecting tube absorbs heat energy under the irradiation of sunlight, the water temperature rises and forms a convective circulation with the water in the water storage tank, so that the water in the water storage tank is heated up and heated for people to use hot water, which is convenient and convenient. Energy saving. But, because the glass vacuum heat collecting tube is plugged in the lower side of the water storage tank, after the hot water in the water storage tank is used up, there is still a large amount of hot water that cannot be used in the glass vacuum heat collecting tube, which wastes heat. If there is only excess hot water in the glass vacuum heat collecting tube, and when the water temperature is high, adding a large amount of cold water instantly will cause the glass vacuum heat collecting tube to burst due to sudden cooling. Especially in the high temperature season, after people use up the hot water in the water storage tank, they do not replenish the water in time. Water into the water storage tank is more likely to make the glass vacuum heat collector burst. In addition, direct displacement collectors are more suitable for household solar water heaters to provide people's domestic water, but are not very suitable for industrial applications.

The indirect displacement heat collector is made by improving the direct displacement heat collector. It mainly includes glass vacuum tubes and finned metal heat transfer tubes. The finned metal heat transfer tubes are placed in the glass vacuum tubes, with fins The sheet metal heat pipe is connected to the pipeline of the water storage tank, which is generally more suitable for industrial water or unit use. The glass vacuum tube absorbs heat, conducts heat and isolates it through vacuum, so that the finned metal heat conduction tube in the inner tank absorbs heat and exchanges energy with water to make water heat energy. For example, the patent application number is 02269360.2 straight-through-glass metal solar vacuum heat collector tube, 01205592.1 anti-scaling high-efficiency solar glass vacuum heat collector tube composite heat pipe, 01216976.5 straight-through glass-metal solar vacuum heat collector tube, 03231807.3 for solar water heaters The heat collector tube, the new straight-through solar vacuum heat collector tube of 03259192.6, and the double-layer glass vacuum metal tube solar heat collector tube of 200520076208.8. The existing indirect displacement heat collectors have a relatively loose structure and are inconvenient to install and connect. Some heat collectors have finned metal heat pipes made of copper, which has high manufacturing costs and lack of a more reasonable design for the connecting pipes, which affects heat collection. Effect.

Utility model content

The purpose of the utility model is to provide an aluminum parallel finned solar heat collector with a reasonable and compact structure and good heat collection effect.

The purpose of this utility model is achieved in that the aluminum finned parallel solar heat collector comprises a glass vacuum tube and a metal heat pipe with fins placed in the glass vacuum tube, and is characterized in that it is provided with a common wall integrated, The water outlet pipe and the circulating water inlet pipe, the circulating water inlet pipe is connected with one end of the water inlet pipe of the common wall integrated inlet and outlet pipe, the water inlet pipe of the circulating water inlet pipe is in the same direction as the outlet pipe of the common wall integrated inlet and outlet pipe, and the common wall integrated inlet and outlet The water pipe is provided with a number of branch nozzles connected with the metal heat pipe with fins; the metal heat pipe with fins is made of aluminum, and the pipe is provided with a pipe cavity that is divided into a water inlet lumen and an outlet pipe. The water baffle of the cavity; the open end of the metal heat pipe with fins is connected with the branch nozzle of the common wall inlet and outlet pipes through rubber gaskets and nuts, and the common wall of the common wall inlet and outlet pipes is connected with the finned one. The water baffle in the middle of the metal heat pipe corresponds to the heat pipe, and the common-wall integrated water inlet and outlet pipes and the circulating water inlet pipe are arranged in the heat preservation cover.

The opening end of the glass vacuum tube is inserted into the heat preservation cover, and a decorative ring is provided at the contact between the glass vacuum tube and the edge of the heat preservation cover. The thermal insulation cover is composed of a casing and a polyurethane foam material, and the polyurethane foam material is surrounded in the casing.

The utility model has reasonable and scientific structure, easy manufacture, convenient installation, low cost, convenient maintenance and long service life. The integrated water inlet and outlet pipes with common walls and the water baffle plate are arranged in the middle of the metal heat conduction tube cavity with fins, so that the arrangement of the water inlet and outlet pipes is compact. The circulating water inlet pipe is connected to one end of the water inlet pipe of the common-wall integrated inlet and outlet pipe, and the water inlet of the circulating water inlet pipe is in the same direction as the outlet pipe of the common-wall integrated inlet and outlet pipe, so that the water inlet and outlet pipe connected to the common-wall integrated The water in and out of the metal heat pipe with fins is in the same process, achieving the effect of first in, last out, last in first out, ensuring the heat exchange balance of the water in and out of the metal heat pipe with fins, improving heat exchange efficiency and heat collection effect. The open end of the glass vacuum tube is inserted in the heat preservation cover and the common-wall integrated inlet and outlet pipes and circulating water inlet pipes are all arranged in the heat preservation cover to improve the overall heat preservation effect of the heat collector. The open end of the metal heat pipe with fins is connected with the branch nozzle of the water inlet and outlet pipe integrated with the common wall through a rubber gasket and a nut, which is fast and convenient and improves work efficiency.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a schematic sectional view of A-A of Fig. 1;

Fig. 3 is a schematic diagram of the parallel connection principle of the utility model.

In the figure: 1 glass vacuum tube, 2 metal heat pipe with fins, 3 plug, 4 nut, 5 rubber gasket, 6 decorative ring, 7 common wall integrated inlet and outlet pipe, 8 polyurethane foam material, 9 Shell, 10 water inlet pipe, 11 water outlet pipe, 12 circulating water inlet pipe, 13 water inlet lumen, 14 water outlet lumen, 15 water baffle, 16 common wall.

Detailed ways

The metal heat conduction tube 2 with fins is made of aluminum, and a metal water baffle 15 is set in the tube to divide the tube cavity into a water inlet cavity 13 and a water outlet cavity 14. The tail end of the tube is sealed with a plug 3 to prevent water A gap channel is provided between the plate 15 and the plug 3, so that the water inlet lumen 13 and the water outlet lumen 14 communicate. The open end of the finned metal heat pipe 2 is provided with a flange. Water inlet pipe 10 and water outlet pipe 11 are arranged on both sides of the common wall 16 of the common wall integrated inlet and outlet pipe 7, and branch pipes connected with the finned metal heat pipe 2 are arranged at intervals on the common wall integrated inlet and outlet pipes. Mouth, the water inlet pipe 10 of the common-wall integrated inlet and outlet pipe is connected to the circulating water inlet pipe 12 by the U-shaped pipe, and the water inlet of the circulating water inlet pipe 12 is consistent with the water outlet direction of the water outlet pipe 11 of the common-wall integrated inlet and outlet pipe. The metal heat pipe 2 with fins is connected with the branch nozzle on the water inlet and outlet pipe of the common wall, and the branch nozzle is provided with ribs, and the nut 4 passes through the flange edge of the open end of the metal heat pipe 2 with fins and the branch nozzle. The ribs are connected and fixed, and the common wall of the integrated water inlet and outlet pipes of the common wall corresponds to the water barrier in the middle of the heat transfer tube of the metal heat transfer tube with fins, and the rubber gasket 5 is arranged between the flange edge and the branch nozzle. The water inlet and outlet pipes and the circulating water inlet pipe of the common wall are arranged in the heat preservation cover made of the polyurethane foam material 8 and the cover shell 9 . The opening end of the glass vacuum tube 1 is inserted in the heat preservation cover, and the metal heat-conducting tube 2 with fins is placed in the inner cavity of the glass vacuum tube 1, and a decorative ring 6 is arranged at the contact between the glass vacuum tube 1 and the edge mask shell 9 of the heat preservation cover.

Claims (1)

1. An aluminum finned parallel solar heat collector, comprising a glass vacuum tube and a finned metal heat conduction tube placed in the glass vacuum tube, is characterized in that it is provided with a common wall integrated inlet and outlet pipe and a circulating water inlet pipe , the circulating water inlet pipe is connected to one end of the water inlet pipe of the common-wall integrated inlet and outlet pipe, the water inlet of the circulating water inlet pipe is in the same direction as the outlet pipe of the common-wall integrated inlet and outlet pipe, and the common-wall integrated inlet and outlet pipes are equipped with several The branch nozzle connected by the metal heat-conducting tube with fins; the metal heat-conducting tube with fins is made of aluminum, and the tube is provided with a water baffle that divides the lumen into the water inlet lumen and the water outlet lumen; The open end of the metal heat pipe with fins is connected with the branch nozzle of the common wall inlet and outlet pipe through rubber gasket and nut, and the heat pipe of the common wall of the common wall inlet and outlet pipe and the metal heat pipe with fins Corresponding to the water baffle in the middle, the water inlet and outlet pipes integrated with the common wall and the circulating water inlet pipe are arranged in the heat preservation cover.

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