CN201672709U - A Serpentine Tube Type Flat Solar Heat Collector - Google Patents

Abstract

The utility model discloses an improved serpentine tube type flat solar heat collector, which belongs to the field of flat solar heat collectors and comprises a transparent cover installed above a heat absorbing plate core, and the heat absorbing plate core includes a serpentine tube type The heat collecting pipe, and the two adjacent copper pipes of the serpentine heat collecting pipe form a trumpet mouth. The utility model has the advantages of simple structure, convenient manufacture of the plate core, low cost, good impact and pressure resistance, no welding of copper pipes, no water leakage, good thermal insulation performance, high heat exchange efficiency and fast heat absorption.

Description

A Serpentine Tube Type Flat Solar Heat Collector

technical field

The utility model discloses an improved serpentine tube type flat solar heat collector, which belongs to the field of flat solar heat collectors.

Background technique

The flat-plate solar collector is mainly composed of heat-absorbing plate core, transparent cover plate, heat insulation layer and shell. At present, flat plate solar collectors are divided into tube plate type, flat box type, tube fin type, heat pipe fin type, serpentine tube type collector and so on according to the structure. Among them, the serpentine tube heat collector, as the name suggests, is because its heat collection pipe is bent into a shape like a coiled snake. The advantages of this serpentine tube heat collector are: simple structure, easy manufacture of plate core, low cost, good impact and compression resistance, no welding of copper tubes, no water leakage, and good heat preservation performance. The disadvantage is that in a low temperature environment, the heat loss through the cover glass is relatively large, and the heat exchange efficiency is not high enough and fast enough, resulting in a decrease in the efficiency of the entire collector. This problem is caused by its own structure.

Utility model content

In order to overcome the above defects, the utility model provides a serpentine tube type flat solar heat collector with high heat exchange efficiency.

In order to achieve the above object, the technical solution adopted in the utility model is:

A serpentine tube type flat solar heat collector, comprising a transparent cover plate installed above the heat absorbing plate core, the heat absorbing plate core includes a serpentine tube type heat collecting pipe, and the serpentine tube type collecting water The two adjacent copper tubes of the tube form a bell mouth.

As a further configuration of the above solution, an aluminum plate is welded to the upper end of the serpentine heat collecting pipe, and the aluminum plate is coated with a heat-absorbing coating. The structural design of the aluminum plate coated with the heat-absorbing coating is the prior art of the flat solar heat collector, so I won't go into details here.

A phenolic foam composite board is installed on the bottom and the periphery of the serpentine heat collecting pipe, and the transparent cover plate is placed on the upper surface of the phenolic foam composite board around the serpentine heat collecting pipe. The arrangement of the phenolic foam composite board makes the heat preservation effect of the utility model better, and further improves the heat exchange efficiency.

A shell is installed on the outer wall of the phenolic foam composite board.

The casing includes an aluminum alloy frame and a glass bead, wherein the glass bead is tightly pressed on the upper end of the transparent cover plate.

The transparent cover plate is high light transmittance tempered glass.

The utility model is a serpentine tube type flat solar heat collector, in which two adjacent copper tubes of the serpentine tube type heat collecting tube are made into the shape of a bell mouth, which is more conducive to the heat transfer medium in the copper tube Flow, reducing fluid resistance can reduce heat loss, thereby improving heat exchange efficiency and heat exchange speed. Specifically, in fluid mechanics, fluid resistance refers to the resistance encountered by a fluid flowing through a conduit. According to the thermodynamic principle of fluid flow in the pipeline, it can be known that the shape of the serpentine elbow made into a bell mouth can reduce the fluid resistance; the Bernoulli equation reveals the energy conservation of the fluid flowing in the gravitational field. According to the Bernoulli equation, In the gravitational field, when other conditions remain unchanged, the smaller the fluid resistance, the smaller the loss of mechanical energy, and the greater the flow velocity of the fluid in the pipeline; therefore, the serpentine elbow is made into the shape of a bell mouth. Aids in heat exchange.

In a word, the utility model has the advantages of simple structure, convenient board core manufacture, low cost, good impact and pressure resistance, no welding of copper pipes, no water leakage, good thermal insulation performance, high heat exchange efficiency and fast heat absorption.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is the structural representation of the preferred embodiment of the utility model;

FIG. 2 is a schematic plan view from the direction A of FIG. 1 .

Detailed ways

As shown in Fig. 1 and Fig. 2, a serpentine tube-type flat solar collector of the present invention includes a transparent cover plate 2 installed above the heat-absorbing plate core, and the heat-absorbing plate core includes a serpentine-shaped tube-type hot water collector The tube 4, and the two adjacent copper tubes 41 of the serpentine heat collecting tube 4 form a bell mouth. An aluminum plate 5 is welded to the upper end of the serpentine heat collecting pipe 4, and the aluminum plate 5 is coated with a heat-absorbing coating. A phenolic foam composite board 3 is installed on the bottom and periphery of the serpentine heat collecting pipe 4, and the transparent cover plate 2 is placed on the upper end surface of the phenolic foam composite board 3 around the serpentine heat collecting pipe 4. The outer wall of the phenolic foam composite board 3 is provided with a shell. The casing includes an aluminum alloy frame 1 and a glass bead 8 , wherein the glass bead 8 is tightly pressed on the upper surface of the transparent cover plate 2 . The transparent cover is made of high-transmittance tempered glass.

The cold medium enters from the water inlet 6, and the hot medium comes out from the water outlet 7.

The above-mentioned embodiments are only used to explain the inventive concept of the present utility model, but not to limit the protection of the utility model rights. Any insubstantial changes made to the utility model by using this concept should fall within the scope of protection of the utility model.

Claims (6)

1. A serpentine tube type flat solar collector, comprising a transparent cover installed on the top of the heat absorbing plate core, characterized in that: the heat absorbing plate core comprises a serpentine tube type heat collecting pipe, and the snake The bell mouth is formed between each adjacent two copper pipes of the shaped tube type heat collecting pipe. 2. A serpentine tube type flat solar collector as claimed in claim 1, characterized in that: an aluminum plate is welded to the upper end of the serpentine tube type heat collecting pipe, and the aluminum plate is coated with a heat absorbing coating. 3. A serpentine tube type flat solar collector as claimed in claim 1 or 2, characterized in that: the bottom and the periphery of the serpentine tube type heat collecting pipe are equipped with phenolic foam composite board, and transparent The cover plate is placed on the upper end surface of the phenolic foam composite board around the serpentine heat collecting pipe. 4. A serpentine tube type flat solar heat collector as claimed in claim 3, characterized in that: the outer wall of the phenolic foam composite board is installed with a shell. 5. A serpentine tube type flat solar heat collector as claimed in claim 4, characterized in that: the housing comprises an aluminum alloy frame and a glass bead, wherein the glass bead is tightly pressed on the upper surface of the transparent cover plate. 6. A serpentine tube type flat solar heat collector as claimed in claim 1 or 5, characterized in that: the transparent cover is made of high light transmittance tempered glass.

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