CN101324375A

CN101324375A - Vacuum thermal insulation solar water heater

Info

Publication number: CN101324375A
Application number: CNA2007101116768A
Authority: CN
Inventors: 陈立骏
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-08
Filing date: 2007-06-08
Publication date: 2008-12-17

Abstract

A novel solar water heater with a glass heat collection vacuum tube includes a thermal-insulation water tank made of a novel vacuum thermal-insulation material with the best thermal insulation effect instead of the conventional polyurethane foaming material. Accordingly, the solar water heater can protect environment, save energy and insulate heat.

Description

Vacuum thermal insulation solar water heater

Affiliated technical field the present invention relates to a kind of solar water heater, a kind of solar water heater that reaches water tank heat preserving with the vacuum insulation new material.

Background technology

Solar water heater divides heat absorption and is incubated two big key components.The maximum of the present usefulness of heat absorbing part are glass heat-collecting vacuum tubes, and inside has black material to absorb solar heat, and the good results are evident, shines upon time half a day, can be one case water heating.For over ten years, the insider payes attention to the research to heat absorption always, and ignores the attention to insulation.

Insulating sections is meant the storage tank that adds heat-insulation layer.For a long time, heat-insulation layer all adopts a large amount of pores of polyurethane material foaming generation to reach the insulation purpose, and attemperater plays a part very important in solar water heater.Vacuum heat collection pipe is often having the heat absorption on daytime of the sun, often use at night with hot water (as having a bath), also may be put into and use second day morning, the very water tank of insulation will be arranged, do not absorb heat evening for a long time, also need hot water and preserve, the advantage of Here it is solar water heater-energy-conservation, safety, insulation.The polyurethane heat-insulation water tank the more than ten years do not change, in order to reach better heat insulation effect, only on thickness, think hard, from beginning 3 centimeters increase to 4.5 centimeters, are increased to 6 centimeters again, 10 centimeters even.Cost is more and more higher, and volume is increasing, but thermal conductivity factor is still constant all the time, if select the little new material of thermal conductivity factor, reach high insulating effect, do not increase material cost again, how to be applied on the solar water heater, the research topic of this respect is to press for very much.

Summary of the invention

Heat distribute three kinds of forms: the conduction of medium, convection current and radiation.Closed pore is arranged in the polyurethane foam material, is reasonable insulation material at present.But these three kinds of forms all possess, and just distribute slower.Be known as best heat preserving method with the vacuum mode insulation quilt.Typical example is a thermos bottle, in the double container air is taken out, and forms vacuum, and it is the most weak that conduction, convection current and radiation are all reduced to, thus can be incubated more lasting.Present vacuum has two kinds of forms: container is a hard material, as thermos bottle, glass heat-collecting vacuum tube, vacuum cup etc.Because hard material has certain intensity, the centre vacuumizes and can also keep certain space just can reach the insulation purpose.Another kind is a soft material, extensively uses abroad now, domestic just the startup stage.Former being applied in space flight and the military affairs, development and application now is to civilian, as refrigerator, medical incubator, frozen products insulated container etc.Be called for short the VIP material, just vacuum insulation sheet material.Concrete structure is that outer bread soft effectively insulating composite sealing bag, and inside has insulation material to make core (as polyurethane foam material, polyphenyl foamed material, glass mat, rock wool blanket etc.) to add getter, vacuumize sealing, reach the insulation purpose.Industrialization all be sheet material, the very little 5-8mw/mk of thermal conductivity factor has only 1/2.5 of polyurethane foam material.

As long as vacuum just can prevent conduction, convection current and radiation, just can be incubated.What hard material leaned on is that certain rigidity and intensity are arranged, and the space that can also keep certain when vacuumizing into negative pressure is incubated.The polyurethane foam material of soft VIP material the inside lining insulation is made core, and outer bread the effectively insulating composite, and sealed after being vacuumized is incubated.Core is arranged,, be unlikely to inhale flat though soft material in outsourcing.Though VIP material high insulating effect has many fatal shortcomings, a lot of insulation materials contain gas with pore and are incubated, but all are that obturator-type is difficult to vacuumize.After vacuumizing, very hard, except that doing sheet material, be difficult to into other shapes, cost price is very high again, during as usefulness polyurethane material foaming, can produce a large amount of freon, influences environmental protection.The invention provides a kind of new material, make the core of liner with non-insulation honeycomb paper, the composite of outsourcing nano-thermal-insulating seals sealing after vacuumizing.Honeycomb paper is the material that the packing factory is used as antivibration mat, and certain elasticity and intensity are arranged before the moulding, can curve different shape, as circular arc or drum shape, very big space is arranged after the moulding, can take out by very fast air the space, forms vacuum, reaches the insulation purpose.

The technical scheme that technical solution problem of the present invention is adopted the most universal solar water heater at present is the solar water heater of glass heat-collecting vacuum tube, structure is that vacuum heat collection pipe is fixed on the support for 45 °, the support top is the attemperater that the polyurethane foam material is done, sealing ring with holes has been located for 45 ° in the water tank below, it is water-tight again to allow vacuum tube closely insert, and shines upon vacuum tube and by heat radiation water tank water is heated.Because the polyurethane foam material is good insulation material, so can make long a period of time of water good heat insulation.

The invention provides a kind of vacuum heat insulation materials that is core with non-insulation honeycomb paper, the nano composite material of outsourcing effectively insulating is done packaging bag, add getter again and sop up surplus water steam, hydrogen, oxygen, carbon dioxide and nitrogen, the vacuum-pumping and sealing sealing reaches the heat-insulation and heat-preservation purpose.Honeycomb paper is produced by specialized factory, is to brush bar glue (glue of 1 centimeter brush, at interval 3 centimeters brush coatings again) at interval with thicker brown paper to be glued together from level to level, every layer of mutual dislocation brush coating, after glue is done, draw back the back and form the hexagon honeycomb, be cut into billot with plate shearing machine as required and launch again.What we adopted is 4 centimeters billots, draw back the back as the two sides all with glue bond on the paper, be exactly antivibration mat, being placed on can damping in the air conditioner packing case.The one side that we adopt is bonding with paper, and another side is empty, and is so just flexible, flexible one-tenth drum shape, the outside is surrounded by the packaging bag that nano composite material is done, in add getter, stay an air entry, vacuumize with vavuum pump, seal sealing, the vacuum height, heat insulation effect is all right.Honeycomb paper was both flexible, certain intensity is arranged again, when vacuumizing, can make sack keep certain space, be easy to the gas in space, the inside is drained only, reach vacuum heat-preserving, make the packaging bag of vacuum drum shape, wrap on the solar energy inner water tank, two is lived with vacuum disc pack pkt. flap again, outermost encases with outer water tank and present warming solar energy water tank indifference.

The vacuum thermal insulation solar water heater heat insulation effect that beneficial effect is made according to the present invention is clearly.Make heat-insulation layer and do core with 4 centimeters honeycomb paper with 6 centimeters polyurethane foam material and vacuumize the heat-insulation layer done relatively, heat insulation effect is nothing like vacuum heat-insulating layer.The temperature test of lowering the temperature every night, if the polyurethane heat-insulation water tank falls 10 ℃, the vacuum heat-preserving water tank then falls 6-7 ℃.Thickness is also thin than it.Help the application in northern market, and cost is low, environmental protection is good, good energy-conserving effect, the high-temperature resistant result of paper is better than polyurethane simultaneously, is certain to welcome revolution of solar water heater industry.

Description of drawings

The invention will be further described below in conjunction with accompanying drawing and example.

Fig. 1, Fig. 2, Fig. 3 are arranged in the accompanying drawing.Fig. 1 is that the present invention cuts front view open, and the expansion shape of Fig. 2 honeycomb paper, Fig. 3 are that honeycomb paper is curled into circle and puts the composite packaging bag shape into.Among Fig. 1: 1, outer water tank.2, inner water tank.3, composite packaging bag.4, honeycomb paper.5, getter.

The specific embodiment

Nano composite material size is in accordance with regulations cut out, three banding mouths are carried out composite packaging bag (3), honeycomb paper (4) and getter (5) are put in the packaging bag (3), seal another side, stay a bleeding point, before not bleeding, put in the outer water tank (1) and inner water tank (2) space of having good positioning, be evacuated with vavuum pump, seal sealing, use and do the vacuum disc pack with quadrat method and be placed on two ends, seal the i.e. success of end cap.

Claims

1, the solar water heater of usually home-use glass heat-collecting vacuum tube, the inside heat-insulation layer is a kind of solar water heater of making attemperater of vacuum heat insulation materials, it is characterized in that doing packaging bag with the nano composite material of effectively insulating, liner core and getter, the vacuum-pumping and sealing sealing, make the insulation material of solar water heater, reach the heat-insulation and heat-preservation purpose.

2, vacuum thermal insulation solar water heater according to claim 1 is characterized in that insulation material is a core with non-insulation honeycomb paper, and the nano composite material of outsourcing effectively insulating is done packaging bag, in add getter, the attemperater of vacuum-pumping and sealing sealing.