CN201293468Y - Novel solar heat collector plate core - Google Patents

Abstract

The utility model belongs to the field of solar water heaters, in particular to a heat collecting plate core on a solar heat collecting plate used in a plate heat exchanger. A new type of solar heat collector plate core, which is composed of two metal fins pressed together. There is a channel between the above two layers of fins, and the rest of the parts are pressed together. The outside of the fins is plated with absorbing For the coating of light energy, the fin plate is an aluminum plate, and the corrosion-resistant metal branch pipe is arranged in the passage, and the outer wall of the corrosion-resistant metal branch pipe is tightly pressed with the inner wall of the passage on the fin plate. In addition, the utility model also provides a set of special processing methods for the above-mentioned board core. The utility model can provide a novel fin plate composed of corrosion-resistant metal branch pipes and heat collecting plates. The plate core made by the fin plate has the characteristics of high strength, pipeline sealing, good durability and low manufacturing cost.

Description

A New Solar Collector Plate Core

【Technical field】

The utility model belongs to the field of solar water heaters, in particular to a heat collecting plate core on a solar heat collecting plate used in a plate heat exchanger.

【Background technique】

Solar water heaters are energy-saving devices that absorb the sun's radiant heat and heat cold water for people to use in their lives and production. It is the most mature and advanced product in my country's solar thermal utilization. Provide the people with new water heater products that are environmentally friendly, safe, energy-saving and hygienic. Since the solar water heater is exposed outdoors for many years, it puts forward a severe test for the selection of water tanks and brackets. It must be resistant to corrosion, cold and heat, and not easy to rust. Therefore, some of its materials are stainless steel, and some are aluminum alloys. Due to the difference in solar radiation between the south and the north, the design principle is to absorb more sunlight, and the angle between the bracket and the ground is also different. There are three most common types of solar water heaters: sun-dried solar water heaters, flat-plate solar water heaters and vacuum tube solar water heaters. The heat collector and the water tank of the sun-dried solar water heater are integrated into one. The structure is simple and the price is low. However, the insulation is poor, so it cannot be used overnight, let alone in winter. The flat-plate solar water heater is composed of a flat-plate solar collector, a water storage tank, a circulation pipe, and a support. The heat absorber has structural types such as copper-aluminum composite tube-sheet type, all-copper tube-sheet type, and flat box type formed by stainless steel stamping and welding. The solar collector, the key component of which is the core of the solar collector, is now mostly made of copper-aluminum composite plate material. Its structure is a copper-aluminum composite board composed of pressed copper tubes and aluminum plates. The middle part of the copper tube is filled with anti-adhesive agent. The middle part is pressurized and inflated by air to obtain the liquid channel in the middle part. One end of the channel of the plate core is soldered and fixed with a copper tube conversion joint, and the other end of the copper tube conversion joint is welded on the end tube in the heat exchange pipeline. The structure of the copper-aluminum composite plate core made by this method is because the copper tube is uniformly compounded on the aluminum plate, so the amount of copper used is relatively large, resulting in high material cost; This connection method not only wastes labor, but also has poor reliability due to the poor soldering strength; because the current building is integrated with the building in the construction process, the durability of solar energy equipment The requirements are very high, and the strength of the board core made by the above method is difficult to meet the use requirements. The above-mentioned problems have existed in the industry for a long time, and a very effective technical solution has not been obtained so far.

【Content of utility model】

The purpose of this utility model is to provide a new type of fin plate composed of corrosion-resistant metal branch pipes and heat collecting plates. The plate core made of this fin plate has the characteristics of high strength, pipeline sealing, good durability and low production cost.

In order to achieve the above-mentioned technical purpose, the technical solution adopted by the utility model includes the following technical content: a new type of solar collector plate core, which is composed of two metal fin plates pressed together, and the above-mentioned two-layer fin plate There is a channel between them, and the rest of the parts are pressed together. The outer side of the fin plate is coated with light-absorbing paint. The outer wall of the corrosion-resistant metal branch pipe is tightly pressed against the inner wall of the channel on the fin plate.

Both ends of the corrosion-resistant metal branch pipe extend out of the channel of the fin plate.

The corrosion-resistant metal branch pipes are copper pipes, aluminum pipes or stainless steel pipes.

By adopting the above-mentioned technical solution, the utility model has obtained the following technical advantages and effects: the utility model adopts the thin plate made of aluminum plate as the fin plate body of the plate core, and then presses the aluminum tube filled with anti-adhesive agent, and the original Compared with some copper-aluminum composite thin plates, aluminum tubes are used instead of copper tubes to make fin plates, which greatly reduces the cost of production materials; by directly setting metal tubes in the channel in the plate core, especially using copper tubes or aluminum Tube or stainless steel tube, compared with the original fin plate structure, saves the soldering process, and at the same time, the copper tube of the overall structure can greatly enhance the strength of the above-mentioned fin plate, extend the durability, and reduce the failure rate during use; By adopting the process of injecting compressed air into the corrosion-resistant metal branch pipe with the mold, the pressing pressure between the corrosion-resistant metal branch pipe and the inner wall of the channel can be flexibly controlled to effectively prevent the corrosion-resistant metal branch pipe from being crushed. At the same time, the production of this method The cost is very low and the production efficiency is very high. If aluminum tubes are used to replace the above-mentioned copper tubes in the production process, the cost can be further reduced. Even so, its service strength and durability are far higher than the core of the current solder joint structure.

In a word, the utility model adopts the above-mentioned structure and uses a special manufacturing process, so that the panel core of the utility model reduces the cost while greatly improving the strength and durability of the panel core.

【Description of drawings】

Fig. 1 is the front view of plate core in the utility model;

Fig. 2 is the bottom view of the plate core in the utility model;

Fig. 3 is A-A sectional view in the utility model.

【Detailed ways】

Next step the utility model is further described in conjunction with accompanying drawing:

As shown in Figures 1-3, the utility model is aimed at the technical improvement of the plate core used for solar heat collection in the original plate-type solar water heater, especially the technical improvement of the fin plate of the heat exchanger. The conventional production process of the above-mentioned fin plate is composed of two metal sheets 1 that are pressed together. Generally, the above-mentioned metal sheets are made of aluminum alloy sheets, and a copper tube or an aluminum tube is placed between the two above-mentioned aluminum alloy sheets. , The anti-sticking agent is poured into the copper or aluminum tube. This anti-sticking agent generally uses mineral oil. Then the above two layers of aluminum plates and the copper or aluminum tubes in them are pressed together, but under the action of the anti-adhesive mineral oil, although the copper or aluminum tubes are flattened and stretched, they are not pressed and bonded. Connected together, at this time, use the method of externally setting the mold to shape the internal high-pressure air to blow up, so that the copper tube or aluminum tube between the above two layers of thin plates can re-form the channel 2, and the channel 2 is used to flow the heat exchange liquid. To improve the utilization efficiency of solar energy, the outer side of the fin plate 1 is coated with a coating that absorbs light energy. The improvement made by the utility model is mainly to provide a corrosion-resistant metal branch pipe 3 in the above-mentioned channel 2. According to the requirements of use, metal pipes with corrosion resistance, such as copper pipes, aluminum pipes, or stainless steel pipes, can be used respectively, and by pressing, the outer wall of the corrosion-resistant metal branch pipe 3 and the inner wall of the channel 2 formed by the thin plate tightly bound. In addition, in order to facilitate the connection between the plate core of the above-mentioned structure and the circulation pipeline, at least one end of the above-mentioned corrosion-resistant metal branch pipe 3 protrudes outside, and the above-mentioned corrosion-resistant metal branch pipe 3 is directly connected to the end pipe in the pipeline by welding . Compared with the core of the original structure, the board core made by adopting the above structure has obvious advantages. Firstly, the corrosion-resistant metal branch pipe 3 is an integral structure, and the corrosion-resistant metal branch pipe 3 and the fin plate are press-fitted and connected very tightly, which is enough to ensure that it has good thermal conductivity. The fin plate of this overall structure and the plate core formed by the fin plate have much higher service strength and durability than the traditional plate core welded by soldering.

In order to improve production efficiency, reduce production cost and simplify the production process, the plate core of the present invention is produced by the following method. First, a metal tube is placed between two layers of aluminum plates, and an anti-sticking agent is arranged in the metal tube. The metal tube uses a copper tube Or aluminum tube or stainless steel tube. Then adopt the traditional production process to press the two-layer metal sheet (generally adopt aluminum plate) and the metal tube, and then use high-pressure air and an external mold to press it into a fin plate. Under the action of mineral oil, although the metal tube is stretched and flattened, its inner wall is not glued together. At this time, high-pressure air is used to cooperate with the external mold to blow out the channel at the position of the metal tube between the above-mentioned metal sheets. Make fins. Finally, a light-absorbing coating is plated on the surface of the fin to complete the fabrication of the fin. Then put the corrosion-resistant metal branch pipe into the channel of the fin plate formed by the above process. At this time, seal one end of the above-mentioned corrosion-resistant metal branch pipe, and then blow in high-pressure air to increase the internal pressure of the corrosion-resistant metal branch pipe. Pressing, the mold has a groove matching the shape of the outer wall of the corrosion-resistant metal branch pipe, through the pressing cavity formed by the two molds, the metal sheet forming the channel part is tightly pressed on the corrosion-resistant metal branch pipe, Make the above two tightly combined to ensure the efficiency of heat conduction. In addition, it is necessary to ensure that both ends of the corrosion-resistant metal branch pipes extend out of the channel of the fin plate. During the pressurization process, the pressure of the air injected into the corrosion-resistant metal branch pipe of the copper pipe should be increased at the same time, and it is better to make the above two pressures equal or close. This can not only ensure that the side wall of the channel formed by the aluminum plate can be tightly pressed on the corrosion-resistant metal branch pipe, but also ensure the performance of heat exchange, and prevent the deformation of the corrosion-resistant metal branch pipe during the pressing process, which will affect the fluidity of the liquid afterwards. Using this process to manufacture the above-mentioned fin plate can also flexibly adjust the pressure during lamination according to the requirements of use or the thickness of the aluminum plate, so that the aluminum plate can be very tightly combined on the corrosion-resistant metal branch pipe. Finally, according to the needs of use, the two ends of the corrosion-resistant metal branch pipes on the above-mentioned multiple fins are respectively welded to the end pipes in the circulation pipeline to form a solar panel heat exchanger.

The above description of the preferred embodiments enables those skilled in the art to make and use the utility model. Those skilled in the art can implement various modifications to this embodiment according to the general principles given here without any creative effort. Accordingly, the invention is not intended to be limited to the embodiments shown herein, but is to be accorded the broadest protection of the claims appended hereto.

Claims (3)

1, a kind of novel solar collector plate core, constitute by two blocks of metal wing plates that press together, be provided with passage between the above-mentioned two-layer wing plate, all the other position pressings are one, the outside of wing plate is coated with the coating that absorbs luminous energy, it is characterized in that: described wing plate is an aluminium sheet, is provided with corrosion resistant metal arm in the described passage, the outer wall of this corrosion resistant metal arm and the tight pressing of passage madial wall on the wing plate.

2, a kind of novel solar collector plate core according to claim 1 is characterized in that: all stretch out outside the passage of wing plate at described corrosion resistant metal arm two ends.

3, a kind of novel solar collector plate core according to claim 1 is characterized in that: described corrosion resistant metal arm is copper pipe or aluminum pipe or stainless steel tube.

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