CN201569189U

CN201569189U - Inward heat-delivery interface vacuum circulating heat-collecting element

Info

Publication number: CN201569189U
Application number: CN2009202122258U
Authority: CN
Inventors: 施国梁
Original assignee: 邱丽琴
Priority date: 2009-11-11
Filing date: 2009-11-11
Publication date: 2010-09-01
Anticipated expiration: 2019-11-11

Abstract

An inward heat-delivery interface vacuum circulating heat-collecting element is composed of an absorbing body arranged in a vacuum heat insulation layer, and a natural circulating flow passage comprising an uplink pipe, a downlink pipe and a heat delivery end. The inward heat-delivery interface vacuum circulating heat-collecting element is characterized in that the uplink pipe of the natural circulating flow passage is connected with a low heat resistance of the absorbing body arranged in the vacuum heat insulation layer or is integrally manufactured with the absorbing body, and contains an inward heat delivery interface. The inward heat-delivery interface vacuum circulating heat-collecting element has the beneficial effects that as for occasions that the element can be obliquely and vertically arranged, circulating heat delivery does not need to equip power, and has rapid starting, antifreezing and no pipe cracking, the heat still can be collected when single pipe is damaged, solar heat collecting devices with water quality according to sanitation standards, much heat collection, and excellent heat insulation performance can be manufactured, the heat exchange interfaces can be freely designed, are not sensitive to vacuum degree, and can stably work in the range of 20 to 500 DEG C semi-permanently, low carbon steel and aluminum can be used to replace corner, and the heat collecting element with overheat protection can be used to prevent open solarizing accidents. Two embodiments are given through combining with the attached drawings.

Description

Indent heat release interface vacuum cycle heat collecting element

Technical field

The utility model relates to indent heat release interface vacuum cycle heat collecting element.

Background technology

Vacuum intubate solar water heater can provide the domestic hot-water in the winter time, but thermal-collecting tube internal memory hydro-thermal is heavy big, hot less, frost resistance is poor, can bombing, the single tube breakage can metal run out, the water-quality deterioration bacterium exceeds standard.Adopt the heat collector tube element can make anhydrous water heater in the pipe, but copper---hydro-thermal pipe cost height, the tangible performance degradation phenomenon of also existence freezing, that have easily.

Summary of the invention

The purpose of this utility model is that indent heat release interface vacuum cycle heat collecting element will be provided.

The technical scheme in the invention for solving the technical problem: with the absorber that places in the vacuum heat-insulating layer, a Natural Circulation runner that constitutes by ascending tube, down pipe and release end of heat, and the vacuum cycle heat collecting element with indent heat release interface is formed at the heat release interface of an indent.The inner can of Natural Circulation runner but be not full of liquid heating agent, the ascending tube of the Natural Circulation runner absorber low thermal resistance interior with placing vacuum heat-insulating layer be connected or with the absorber integral production.Here, release end of heat is relative circulatory flow; The heat release interface is relative heat collecting element, and both are meant same object sometimes.

The beneficial effects of the utility model comprise: for the occasion of tiltable or positioned vertical, circulation conduct heat need not to be equipped with power, starts fast, freeze proof, pipe explosion, single tube damages still can thermal-arrest, can make water quality meet sanitary standard, hot many, solar collector that heat-insulating property is excellent; But heat exchange interface designs freedom, can prevent empty solarization accident to the insensitive semipermanent steady operation of vacuum at the heat collecting element of 20～500 ℃ of scopes, available mild steel and aluminium substitution copper, overtemperature protection.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is an embedded indent heat release interface vacuum cycle heat collecting element configuration diagram.

Fig. 2 is an overtemperature protection indent cover glass tube heat release interface vacuum cycle heat collecting element configuration diagram.

1. ascending tubes among the figure; 2. down pipe; 3. release end of heat; 4. inner glass tube; 5. thermofin; 6. vacuum heat-insulating layer; 7. absorber; 8. cover glass tube; 9. concave section; 10. free end pawl; 11. heating power element.

The specific embodiment

Among Fig. 1, release end of heat 3 with ascending tube 1, down pipe 2 and indent constitutes a Natural Circulation runner, the ascending tube 1 of Natural Circulation runner embed all-glass vacuum thermal-collecting tube and and the inner glass tube 4 of thermal-collecting tube between adopt thermofin 5 to conduct heat, form an embedded indent heat release interface vacuum cycle heat collecting element.

Fig. 1 embodiment embedded vacuum cycle set thermal element is done the inclination installation that release end of heat 3 height are put in the sun, and the heating agent liquid level shown in the oblique dotted line is the level of state.Sunlight sees through cover glass tube and be converted to heat energy on the absorbing film of thermal-collecting tube inner glass tube 4, heat energy is passed to the heating agent in the ascending tube 1 by inner glass tube 4 and thermofin 5 and is made the heating agent expanded by heating by ascending tube 1 come-up, tubulose release end of heat 3 places at the Natural Circulation runner, heating agent is emitted the heat energy temperature and is reduced entering down pipe 2, sinks to enter ascending tube 1 behind the end once more and be heated and float.So along the circulation thermal-arrest that goes round and begins again of approach shown in the band arrow curve.

Answer degasification before the Natural Circulation runner can heating agent, can finishes and should seal.The design of Natural Circulation runner and the selection of heating agent and can amount thereof should satisfy: the 1) foundation of Natural Circulation; 2) the heating agent stable performance be not easy thermal decomposition, saturated vapor force down, not with Natural Circulation runner generation chemical reaction; 3) possessing the heating agent expansion space in the Natural Circulation runner solidifies heating agent or empty relevant parts is not produced adverse effect when shining volumetric expansion; 4) the release end of heat operating mode is good.

For reducing the hot short circuit between ascending tube 1 and the down pipe 2, embedded vacuum cycle set thermal element can also adopt the down pipe that has heat insulation layer.

Among Fig. 2; constitute a Natural Circulation runner with ascending tube 1, down pipe 2 and coil heat exchanger release end of heat 3; the ascending tube 1 of Natural Circulation runner and absorber 7 integral productions that place in the vacuum heat-insulating layer 6; the bimetal leaf heating power element 11 that is connected, has free end pawl 10 with down pipe 2 low thermal resistances is set in vacuum heat-insulating layer 6, forms an overtemperature protection indent cover glass tube heat release interface vacuum cycle heat collecting element.Coil heat exchanger release end of heat 3 cooperates to conduct heat with cover glass tube 8 concave sections 9 and is connected, and is lined with an elasticity heat transfer piece between coil heat exchanger release end of heat 3 and the cover glass tube concave section 11 and conducts heat to improve.Coil heat exchanger release end of heat 3 is by elasticity heat transfer piece and 11 heat releases of cover glass tube concave section.

Under the normal working temperature, coil heat exchanger release end of heat 3 is by elasticity heat transfer piece and cover glass tube 8 concave sections, 9 heat releases.The free end pawl 10 of bimetal leaf heating power element 11 does not contact with cover glass tube 8.

When the empty solarization of heat collecting element internal temperature is too high; the free end pawl 10 of bimetal leaf heating power element 11 is heated to turn up and contacts with cover glass tube 8 to position shown in the dotted line; partial heat energy is dispersed into environment by these free end pawls 10 and cover glass tube 8, makes the temperature of heat collecting element reduce the realization overtemperature protection.Overtemperature protection can automatically terminate later.

Heating power element 11 also can be connected with absorber 7 low thermal resistances; Also can adopt memorial alloy to make the heating power element.

Can omit by the cover glass tube heat release and can cut down seal connector, good airproof performance, corrosion-resistant.

Vacuum heat-insulation between the ascending tube 1 of Fig. 2 embodiment and the down pipe 2, very favourable to the circulation thermal-arrest.

The coil heat exchanger release end of heat 3 that cooperates with cover glass tube concave section 9 among Fig. 2 embodiment can also adopt other forms, for example the jacketed type exchanger release end of heat that cooperates with cover glass tube concave section 9 arranged concentric.

Inner surface coats infrared reflective material in the non-light area of cover glass tube, can effectively reduce the radiation heat loss of heat collecting element.

Claims

1. indent heat release interface vacuum cycle heat collecting element, form with placing absorber and a Natural Circulation runner that constitutes by ascending tube, down pipe and release end of heat in the vacuum heat-insulating layer, the inner can of Natural Circulation runner but be not full of liquid heating agent, the ascending tube that it is characterized in that the Natural Circulation runner be connected with absorber low thermal resistance in placing vacuum heat-insulating layer or with the absorber integral production, and contain the heat release interface of indent.

2. heat collecting element according to claim 1 is characterized in that containing thermofin between the inner glass tube of the ascending tube of Natural Circulation runner and all-glass vacuum thermal-collecting tube.

3. heat collecting element according to claim 1, it is characterized in that the Natural Circulation runner contains a coil pipe or a jacketed type exchanger release end of heat that cooperates heat transfer to be connected with the cover glass tube concave section, contains an elasticity heat transfer piece between coil pipe or jacketed type exchanger release end of heat and the cover glass tube concave section.

4. heat collecting element according to claim 1 is characterized in that vacuum heat-insulating layer contains the bimetal leaf heating power element that is connected, has the free end pawl with absorber or down pipe low thermal resistance.

5. heat collecting element according to claim 1 is characterized in that the non-light area of cover glass tube inner surface is coated with to be shaped on infrared reflective material.