CN2687582Y

CN2687582Y - Metal-glass heat tube type solar heat collector

Info

Publication number: CN2687582Y
Application number: CNU2004200256289U
Authority: CN
Inventors: 蒋乐书
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-03-17
Filing date: 2004-03-17
Publication date: 2005-03-23
Anticipated expiration: 2014-03-17

Abstract

The metal-glass heat tube type solar heat collector comprises an existing full-glass plated film vacuum heat collecting tube which is additionally provided with a metal copper material end and filled with a phase change working substance. The end is a concentric tubular structure with three segments with different diameters, with an opening at the lower part and the diameter is matched with the inside diameter of the glass tube; a proper glue is used to seal the lower segment and the inside wall of the glass tube. The external diameter of the middle segment is the same with the external diameter of the glass tube while the upper segment with small diameter is a pipe for evacuating, charging and radiating, with radiating fins welded on (two forms can be used, see figure 1 and figure 2). The exposed part of the external surface of the metal end is coated with a layer of non-polar heat resistant carbon-hydrogen resin material (teflon) to effectively prevent scale deposit from aggregating. The utility model can effectively enhance the thermal property of the solar energy water heater and solves technical matters of utilizing heat tube type solar energy.

Description

The metal-glass hot pipe type solar heat collector

Technical field

The utility model relates to a kind of heat collecting element of solar water heater, belongs to technical field of solar water heaters.

Background technology

The heat collecting element of solar water heater use at present is mainly full coating film on glass vacuum heat collection pipe.This thermal-collecting tube finds that in application the defective of the following aspects is arranged at least:

1. inside pipe wall fouling heat exchange mode serious and free convection all makes its heat conduction efficiency be difficult to improve.

2. in using as empty solarization, severe cold take place, add situation such as cold water suddenly and all cause glass tube " thermal explosion " easily, " cold quick-fried " fracture phenomena also causes systemic breakdown, so poor stability.

3. the pressure-bearing property of all-glass vacuum tube is poor, brings the limitation in the use.

4. what require for fear of above-mentioned situation is operational loaded down with trivial details.

Each producer begins to turn to the research and development and the production of heat pipe type heat collector in this case, but because of having high input, and cost is high and be difficult to penetration and promotion.Technical limitation and immaturely also make quality and life-span be difficult to guarantee.

Summary of the invention

The objective of the invention is to propose a kind of novel heat pipe type solar heat collection pipe, to overcome the defective of present all-glass vacuum thermal-collecting tube, and solved that heat pipe is used for solar energy and the high investment that exists, expensive, and the stress that brings of the hot pressing of glass and metal envelope is concentrated and gas leakage problem and heat exchanger are concentrated the incrustation scale problem.

The technical scheme that the utility model adopted is: install a red copper metal termination additional at existing all-glass vacuum thermal-collecting tube opening part, fill with phase-change working substance in glass tube and the annular seal space that the metal end capitiform becomes, promptly constituting with the glass tube is the thermal-arrest section, and red copper metal termination is " the metal-glass hot pipe type solar heat collector " of heat exchanging segment.Therefore the liquid refrigerant of condensation can save capillary device by gravity reflux.

This termination is the concentric tubular structure of three sections different-diameters, the hypomere opening, and diameter cooperates with the glass tube internal diameter, and with suitable adhesive sealing.Stage casing external diameter and glass tube external diameter are same, and epimere is small-bore long tube, can be as exhaust, fluid injection, heat exchanger tube.Welding fin (can be done two kinds of forms, see Fig. 1, Fig. 2) on it.Metal termination outer surface expose portion is coated with the nonpolarity heat-resisting hydrocarbon resin material of skim (teflon), concentrates in order to effectively to prevent incrustation scale.

The utility model has following advantage:

1. hot property is better, the reasons are as follows:

No incrustation scale in the glass-vacuum tube; The phase-change working substance thermal capacitance is little, and startability is good: heat exchange area is big; Select suitable working medium can make heat pipe play " thermal switch " effect, avoided the high temperature reflux of water heater under no thermic load situation.

2. it is good to use with security:

Because anhydrous in the glass tube, avoided all-glass vacuum tube in problems such as the glass tube that freeze severe winter and cold and hot sudden change causes burst; Even a glass tube cracking can not cause the situation of total system paralysis yet; Can adopt the pressure-bearing mode to send, supply water, use safer, more convenient.

3. P/C is than high, invests for a short time, and cost is low, is easy to penetration and promotion.

The utility model only needs foolproof termination of technology of adjunction on original plated film glass tube with vacuum basis, adopts simple adhesive technology between termination and the glass tube.Therefore former vacuum tube factory and water heater factory can be under original working conditions, just can realize upgrading to original product with few input.

Description of drawings

Fig. 1 is a metal-glass hot pipe type solar heat collector structural representation.It is by plated film glass tube with vacuum (1), termination (2), fin (3), blast pipe formations such as (5).The plated film glass tube with vacuum adopts the regular solar thermal-collecting tube that uses at present.The termination is the concentric tubular structure of three sections different-diameters, in the hypomere opening, diameter and glass tube through cooperating, and with suitable adhesive sealing.Stage casing external diameter and glass tube external diameter are same, and epimere is small-bore long tube, can be as exhaust, fluid injection, heat exchanger tube.Welding fin (can be made two kinds of forms, see Fig. 1, Fig. 2) on it.Metal termination outer surface expose portion is coated with the nonpolarity heat-resisting hydrocarbon resin material of skim (teflon).

Fig. 2 is another form of fin.

Fig. 3 is a scheme of installation, (4), be the water tank overflow mouth, (6) are inner water tank, (7) are sealing ring.

Claims

1. metal-glass hot pipe type solar heat collector, it is characterized in that: the metal termination (2) with some fin patches in the mouth of pipe of existing coated glass vacuum tube (1), and with fluid sealant and inside pipe wall cementation.Annotate with suitable working medium in the annular seal space that forms between glass tube and the termination.

2. according to the described metal-glass hot pipe type solar heat collector of claim (1), it is characterized in that: termination (2) are the concentric tubular structure of three sections different-diameters, the hypomere opening, its external diameter cooperates with the glass tube internal diameter, stage casing external diameter and glass tube external diameter are together, epimere is small-bore exhaust, fluid injection, radiating tube, the some fin of welding on it.Fin has the structure of two kinds of forms, and is as Fig. 1, shown in Figure 2.

3. according to the described metal-glass hot pipe type solar heat collector of claim (1), it is characterized in that: the outer surface expose portion of termination (2) is coated with the nonpolarity heat-resisting hydrocarbon resin of skim (teflon), concentrates in order to prevent incrustation scale.