CN201488361U

CN201488361U - Vacuum thermal collecting pipe with inner pipe externally coated with metal pipe

Info

Publication number: CN201488361U
Application number: CN2009201928197U
Authority: CN
Inventors: 董子良
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-29
Filing date: 2009-08-29
Publication date: 2010-05-26
Anticipated expiration: 2019-08-29

Abstract

The utility model discloses a vacuum thermal collecting pipe with an inner pipe externally coated with a metal pipe, which comprises a glass outer pipe, a glass inner pipe, supporting legs and getter. A layer of metal pipe is coated on the surface of the glass inner pipe, and two vanes are formed by radially extending the metal pipe from the inside of the glass outer pipe. The vacuum thermal collecting pipe not only is fine in thermal collecting effect, but also is simple in production technique, low in production cost and high in yield.

Description

The vacuum heat collection pipe of interior pipe outer wrapping metal tube

Technical field

The utility model relates to a kind of vacuum heat collection pipe, particularly a kind of vacuum heat collection pipe of interior pipe outer wrapping metal tube.

Background technology

At present, shortage along with non-renewable energy resources, more and more obtain people's attention such as this regenerative resource of solar energy, therefore solar water heater has obtained using widely and popularizing, and the vacuum heat collection pipe that is applied to solar water heater also improves constantly along with the raising of consumer demand, yet existing vacuum heat collection pipe Heat-collecting effect preferably, and often heat insulation effect is relatively poor; And Heat-collecting effect and heat insulation effect are all preferably, and cost is too high again, are not easy to promote.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of vacuum heat collection pipe of interior pipe outer wrapping metal tube, and not only Heat-collecting effect is good, and production technology is simple, and production cost is low, the yield rate height.

The utility model technical scheme that adopts of dealing with problems is: the vacuum heat collection pipe of pipe outer wrapping metal tube in a kind of, comprise glass outer tube, glass inner tube, feet, getter, at described glass inner tube surface parcel layer of metal pipe, described metal tube radially extends two fins at the glass outer tube with interior.

As further improvement, described two fins are on the straight line.

As further improvement, described metal tube and flap surface are provided with the coating that light is had high-absorbable.

The diameter of glass outer tube can be between 58mm～120mm in the utility model, the diameter of glass inner tube can be between 10mm～50mm, thickness is between 1.5mm～5mm, the diameter of the molten envelope of glass outer tube and glass inner tube place's reducing can be between 30mm～100mm, and length is between 50mm～120mm.What the material of metal tube and fin can be for aluminium, stainless steel, copper, titaniums etc. in the utility model is wherein a kind of.

The beneficial effects of the utility model are: coat the layer of metal pipe on glass inner tube surface, and metal tube radially extends two fins at the glass outer tube with interior, promptly increased effective daylighting area, Heat-collecting effect is good; And, promptly having reduced interior pipe water capacity because the diameter of design glass inner tube is less, the rising of water temperature has been quickened in the accelerating medium circulation; And because glass outer tube and glass inner tube are commaterial, promptly the coefficient of expansion is identical when molten envelope, and production technology is simple, and production cost is low, the yield rate height.

Description of drawings

Fig. 1 is the profile of the utility model embodiment.

Fig. 2 is that A among Fig. 1 is to cutaway view.

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

The specific embodiment

As shown in Figure 1 and Figure 2, embodiment comprises that diameter is the glass outer tube 1 of 58mm, the glass inner tube 2 that diameter is 29.5mm, the thickness of glass outer tube 1 is 1.8mm, the thickness of glass inner tube 2 is 2.5mm, at glass inner tube 2 surface parcel one deck aluminum pipes 3, this aluminum pipe 3 is formed by two semicircle pressings, and this aluminum pipe 3 also radially extends two aluminum fins 4 at glass outer tube 1 with interior, two aluminum fins 4 are on the same straight line, also are coated with aluminium nitride coating at aluminum pipe 3 and aluminum fin 4 surfaces.Upper and lower between bottom, glass outer tube 1 and the aluminum pipe 3 of glass inner tube 2 is respectively equipped with feet 5, and feet 5 is used for fixing inner and outer pipes, is provided with getter on the lower support pin 5 between glass outer tube 1 and the aluminum pipe 3.Glass outer tube 1 and glass inner tube 2 are 47mm at the diameter of molten envelope place's reducing, and length is 100mm.

Claims

1. vacuum heat collection pipe, comprise glass outer tube (1), glass inner tube (2), feet (5), getter, it is characterized in that: at described glass inner tube (2) surface parcel layer of metal pipe (3), described metal tube (3) at glass outer tube (1) with interior two fins (4) that radially extend.

2. a kind of vacuum heat collection pipe as claimed in claim 1 is characterized in that: described two fins (4) are on the straight line.

3. a kind of vacuum heat collection pipe as claimed in claim 1 is characterized in that: described metal tube (3) and fin (4) surface are provided with the coating that light is had high-absorbable.

4. a kind of vacuum heat collection pipe as claimed in claim 1 is characterized in that: the diameter of described glass inner tube (2) is between 10mm～50mm, and thickness is between 1.5mm～5mm.