CN2366786Y

CN2366786Y - Metallic-glass vacuum heat collector tube

Info

Publication number: CN2366786Y
Application number: CN99209137U
Authority: CN
Inventors: 郭宗俊
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-20
Filing date: 1999-04-20
Publication date: 2000-03-01
Anticipated expiration: 2009-04-20

Abstract

The utility model relates to an element which is suitable for a solar energy water heater. The element is a metal-glass vacuum heat collecting pipe which is characterized in that a metal pipe is inserted into the existing full-glass vacuum heat collecting pipe. One end of the metal pipe is welded and sealed. The other end of the metal pipe is a horn mouth which is sealed in a glue bonding mode with an opening of the vacuum pipe. A heat transfer fluid is added between a glass pipe and the metal pipe. When the metal-glass vacuum heat collecting pipe is used, water directly enters the metal pipe and is not contacted with the glass pipe. Thereby, the problems of poor pressure resistance, poor coldness and heat prevention and poor shock ability of the full-glass vacuum heat collecting pipe can be solved. The metal-glass vacuum heat collecting pipe has the advantages of dimple manufacture and low cost and has no change of any size. The metal-glass vacuum heat collecting pipe can be completely matched with a hot water tank of the existing glass vacuum heat collecting pipe.

Description

Metal---glass heat-collecting vacuum tube

The utility model relates to a kind of solar water heater element metal---glass heat-collecting vacuum tube that is applicable to

Common solar water heater is to adopt the element of all-glass vacuum thermal-collecting tube to make, its principle is made up of outer glass pipe and inner glass tube, vacuumize in the middle of the layer glass pipe, prevent that heat from loosing outward, and on the outer wall of inner glass tube, scribble sunlight is had the high coating of absorptivity.When sunlight sees through glass outer, shine on the inner glass tube, the coating on inner glass tube surface is converted into heat energy with luminous energy, and the heating of the water in will managing.But this all-glass vacuum thermal-collecting tube cold-and-heat resistent impact, pressure-bearing property relatively poor, add its glass tube of cold water suddenly and burst easily as the empty back of shining, the too high glass tube that also takes place easily of hydraulic pressure breaks.For improving the all-glass vacuum thermal-collecting tube deficiency, the someone has taked one to be to insert heat pipe in all-glass vacuum thermal-collecting tube, again heat pipe condenser section is inserted water tank, the thermal-collecting tube that adopts this method to make, the cost height, the thermal efficiency is low, can't with the supporting use of the boiler of all-glass vacuum thermal-collecting tube.The 2nd, in all-glass vacuum thermal-collecting tube, insert U type metal tube, the inner surface that will abut against glass tube with the metallic plate that U type metal tube fuses obtains heat, and its efficient is low, and hot sun is bigger, and because U type bore is thinner, incrustation scale takes place easily stop up.

The utility model is the problem that exists at the glass heat-collecting vacuum tube on the existing solar water heater, and has designed a kind of metal---glass heat-collecting vacuum tube on the basis of all-glass vacuum thermal-collecting tube.

The purpose of this utility model is, on the basis of existing all-glass vacuum thermal-collecting tube, designed a kind of metal---glass heat-collecting vacuum tube, this thermal-collecting tube is to insert metal tube in existing all-glass vacuum thermal-collecting tube, this metal tube one end welded seal, the other end is that horn mouth and vacuum tube opening part adopt the glue bond sealing, and adds heat-transfer working medium (as water) between glass tube and metal tube.All-glass vacuum thermal-collecting tube is withstand voltage, the problem of cold-and-heat resistent impact capacity difference thereby solved, this thermal-collecting tube is made simply simultaneously, and cost is low, the heat transfer efficiency height, can supportingly use fully with the heat storage water tank of existing all-glass vacuum thermal-collecting tube, need not change the virtually any size of water tank.

The metal that the utility model is designed---glass heat-collecting vacuum tube, be in existing all-glass vacuum thermal-collecting tube, to insert metal tube (3), one port welded closure of the metal tube (3) in inserting glass tube (2), its other end is that the opening part of horn mouth and vacuum tube (2) adopts glue bond (5) sealing, simultaneously add heat-transfer working medium (4) between glass tube (2) and metal tube (3), this metal tube (3) can adopt copper, aluminium or stainless steel material to make.

Referring to accompanying drawing

Fig. 1 is the utility model structural representation

Further describe and provide embodiment below in conjunction with accompanying drawing

Metal---the glass heat-collecting vacuum tube of the utility model design, be in existing full glass heat collection tube, directly to insert metal tube, insert the metal tube one port welded closure in the glass tube, its other end is that the opening part of horn mouth and vacuum tube adopts the glue bond sealing, between glass tube and metal tube, add heat-transfer working medium (as water), in use, water directly enters in the metal tube and does not contact with glass inner tube, thereby solved the withstand voltage of all-glass vacuum thermal-collecting tube, the problem of cold-and-heat resistent impact capacity difference, when seeing through glass outer, sunlight shines on the inner glass tube, the coating on inner glass tube surface is converted into heat energy with luminous energy, make heat-transfer working medium (as water) between glass tube and the metal tube when being heated, make that the water heating gets final product in the metal tube.If in the season of cold, for preventing the metal tube bursting by freezing, can change the shape of metal tube, utilize the metal tube principle different, to prevent the metal tube bursting by freezing with the volume differences of water, ice.

Claims

1, a kind of solar water heater element metal---glass heat-collecting vacuum tube, it is characterized in that, in existing all-glass vacuum thermal-collecting tube, insert metal tube (3), one port welded closure of the metal tube (3) in inserting glass tube (2), its other end is that the opening part of horn mouth and vacuum tube (2) adopts glue bond (5) sealing, adds heat-transfer working medium (4) simultaneously between glass tube (2) and metal tube (3).

2, metal according to claim 1---glass heat-collecting vacuum tube is characterized in that, this metal tube (3) can adopt copper, aluminium or stainless steel material to make.