Internal reflective vacuum heat collector, forming device and close-packed heat collector

A vacuum heat collecting tube and forming device technology, which is applied in heating devices, solar thermal devices, forming tools, etc., can solve the problems of large heat capacity, light leakage, and water storage in heat collecting tubes, and achieve the effect of small heat capacity

CN103375934BInactive Publication Date: 2015-11-04李春信
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-11-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an internal reflective evacuated collector tube, a forming device and a close-packed collector. An internal tube and an external tube of the internal reflective evacuated collector tube are sleeved, the top ends of the internal tube and the external tube are hermetically welded, the diameter of the front section of the external tube is smaller than that of the rear section of the external tube to form a reducing section, the internal tube below the reducing section of the external tube is a flat-plate tube, a reflecting plate is arranged between the internal tube and the external tube, a heat insulating cover of the forming device is arranged on a base, an upper forming mould and a lower forming mould are arranged in the heat insulating cover, an upper driving mechanism and a lower driving mechanism drive the upper forming mould and the lower forming mould to move, the end faces of the upper forming mould and the lower forming mould are provided with a circular tube section forming mould orifice and a flat-plate tube section forming mould orifice, and a flexible plastic crimping end is arranged on the flat-plate tube section forming mould orifice. A plurality of internal reflective evacuated collector tubes of the close-packed collector are connected with one side or two sides of a water storage tank, and the water storage tank and the internal reflective evacuated collector tubes are arranged on a support. The heat capacity of the internal reflective evacuated collector tube is low, the internal reflective evacuated collector tubes of the close-packed collector can be connected with the water storage tank in a close-packed manner, the forming device can be used for conveniently manufacturing the internal reflective evacuated collector tube, light leaking clearances are effectively reduced by the close-packed collector, and overall heat efficiency is improved.
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Description

technical field

[0001] The invention relates to a device in the field of solar photothermal technology, in particular to an internal reflective vacuum heat collecting tube for a solar water heater, a molding device and a densely packed heat collector. Background technique

[0002] Solar water heaters convert sunlight energy into thermal energy and heat water from low temperature to high temperature to meet the hot water needs in people's lives. Solar water heaters are divided into vacuum tube solar water heaters and flat plate solar water heaters according to their structure. The vacuum tube solar water heater is composed of vacuum heat collecting tubes, water storage tanks and brackets and other related components. The conversion of solar energy into heat mainly depends on the heat collecting tubes. hot water. Such as figure 1 As shown, the general glass heat collecting tube is composed of an equal-diameter glass inner tube 2 and an equal-diameter glass outer tube 1. A v...

Examples

Embodiment Construction

[0042] Such as figure 2 , image 3 with Figure 4 As shown, an internally reflective vacuum heat collecting tube of the present invention includes an outer tube 1, an inner tube 2 and a retaining spring 3, the inner tube 2 fits inside the outer tube 1, and the outer surface of the inner tube is coated with non- White selective light-to-heat conversion coating, the circlip 3 is arranged between the outer tube 1 and the inner tube 2 and is located at the tail end of the inner tube 2, the top ends of the outer tube 1 and the inner tube 2 are welded and sealed, and the outer The interlayer between the tube 1 and the inner tube 2 is a vacuum, and also includes a reflector 29. The diameter of the front section of the outer tube 1 is smaller than the diameter of the rear section to form a reduced diameter section 11, and the inner tube 2 is in the corresponding reduced diameter section of the outer tube 1. Below 11 is a flat tube 21, the reflector 29 is arranged in the interlayer ...