CN2744997Y - Double vacuum total glass heat pipe solar water heater - Google Patents

Abstract

The utility model discloses double vacuum total glass heat pipe solar water heater, comprising a heat collection connecting box (3) and a plurality of vacuum pipes (4). One end of the heat collection connecting box (3) is provided with a cold water opening, and the other end is provided with a hot water opening. The internal and external glass pipes (42, 41) are all the total sealed vacuum pipes; the interior of the internal glass pipe (42) is provided with heat conducting medium (44), and one end of the internal glass pipe (42) is extended out of the external glass pipe (41) and extended into the heat collection connecting box (3). Because of the utility model having large heat exchanging area, high heat efficiency, and fast water heat exchanging speed between the double vacuum total glass heat pipe solar water heater and the heat collection connecting box (3), the explosion phenomenon in the vacuum pipes (4) can be avoided effectively; simultaneously the scale deposit accumulated in the internal glass pipe (42) is reduced.

Description

Two vacuum all-glass heat pipe solar water heaters

Technical field:

The utility model relates to a kind of solar water heater, particularly a kind of pair of vacuum all-glass heat pipe solar water heater.

Background technology:

The present ordinary vacuum tube solar water heater that uses, comprise thermal-arrest header and some vacuum tubes, its vacuum tube divides inside and outside two glass tubes, two glass tube intermediate courses are vacuum heat-insulating layer, inner glass tube one end is an openend, this end puts in the water of thermal-arrest header, be full of water in the inner glass tube, water in pipe and the pipe in passing to behind the heat of outer glass pipe collection solar energy, water temperature raises and rises in the thermal-arrest header by hot water buoyancy in the pipe, carry out heat exchange with the cold water in the thermal-arrest header, thereby reach purpose water heating in the thermal-arrest header.This water heater is the low-temperature water heating device, and temperature is up to about 80 ℃, and this kind water heater is owing to the water in the vacuum tube deposits in forever in pipe, can not be utilized effectively, the buoyancy of hot water and the water in the thermal-arrest header carry out heat exchange in the tube simultaneously, and programming rate is slow, and the thermal efficiency is lower; This water heater very easily at the inner tubal wall scaling, reduces the thermal efficiency when water temperature is higher, thus with after a period of time, need to pull down the cleaning incrustation scale by root, cumbersome; In addition, when common water heater is shone at sky, advance cold water suddenly or rainy glass tube bursts easily, temperature is crossed low glass tube and is also burst easily; Moreover one of ordinary vacuum tube bursts or damages, and just can cause whole collecting system to metal run out, and does not retube immediately, and system just quits work.

The utility model content:

The purpose of this utility model is to provide a kind of thermal efficiency height, less scaling and be difficult for two vacuum all-glass heat pipe solar water heaters of bursting again.

The technical solution of the utility model is: this solar water heater, comprise thermal-arrest header and some vacuum tubes, thermal-arrest header one end is established cold water outlet, the other end is established the hot water mouth, inside and outside two glass tubes of this vacuum tube are the Totally enclosed vacuum pipe, be provided with heat-conducting medium in the inner glass tube, inner glass tube one end stretches out outer glass pipe, and this external part is positioned at the thermal-arrest header.

As a kind of improvement project of the present utility model be: the cold water outlet of described thermal-arrest header is connected with inlet channel, this inlet channel is provided with electromagnetic valve I, hot water mouth's one end of thermal-arrest header is provided with temperature sensor, this hot water mouth links to each other with boiled water tank by pipeline, and described temperature sensor all links to each other with controller with electromagnetic valve I.

As another improvement project of the utility model be: be provided with electric heating device and temperature, level sensor in the described boiled water tank, this heater element and temperature, level sensor all link to each other with described controller, described boiled water tank also is connected with inlet channel, is provided with check valve and electromagnetic valve II on this inlet channel.

The utility model solar water heater, the vacuum tube of this water heater adopts totally-enclosed inside and outside two-layer vacuum chamber, outer vacuum chamber is a thermal insulation layer, place heat-conducting medium in the internal layer vacuum chamber, when solar radiation, when being warming up to 30 ℃ of left and right sides in the interior tube chamber rapidly, the interior heat-conducting medium of its pipe promptly becomes gaseous expansion by liquid state and is full of inner chamber, carry out heat exchange by interior pipe contact in the insertion thermal-arrest header and the water in the thermal-arrest header, it is bigger interiorly to manage the contact heat exchange area, water temperature can raise rapidly in the thermal-arrest header, and the thermal efficiency will improve 20-35%; The utility model carries out heat exchange because heat exchange area is big rapidly with water in the thermal-arrest header, can effectively avoid vacuum tube to burst phenomenon, simultaneously, because heat exchange is fast, has also significantly reduced interior duct ligation dirt; Moreover the utility model adopts totally-enclosed inside and outside two-layer vacuum chamber, because outer vacuum tube is connected for sealing with thermal-arrest header coupling part, under external force, damage if any indivedual vacuum tubes, the thermal-arrest header can not metalled run out, and does not therefore influence whole water-heater system work.The utility model water heater thermal efficiency height, water temperature can reach 90 ℃.Also be provided with boiled water tank, electromagnetic valve I, temperature sensor and controller in this water-heater system, when water temperature rises to 90 ℃ in the thermal-arrest header, temperature sensor promptly sends command signal to controller, controller just makes electromagnetic valve I open, the boiling water that the running water of water inlet pipe just promotes in the thermal-arrest header injects in the boiled water tank, and when the water temperature in the thermal-arrest header dropped to 88 ℃, electromagnetic valve I was closed automatically, come and go successively, running water progressively is heated into boiling water.Also be provided with electric heating device and temperature in the utility model system, level sensor, check valve and electromagnetic valve II, work as rainy weather, when sunlight is inadequate, used as the boiling water in the boiled water tank and to be lower than when setting lowest water level, temperature, level sensor just sends water level signal to controller, controller just makes the electromagnetic valve II switch opens, just directly replenish water level by water inlet pipe, reach when setting lowest water level, electromagnetic valve II is closed automatically, simultaneously, when the water temperature in the boiled water tank was lower than 90 ℃ of design temperatures, sensor just started electric heating device by controller, beginning electricity consumption heat temperature raising, when temperature reached 90 ℃, electrical heating quit work automatically.By above control system, as long as sunny, just can utilize solar energy to reach design and produce minable water yield throughout the year, when sunlight was not enough, electrical heating replenished automatically, makes and remains enough constant temperature boiling water in the boiled water tank.The utility model can guarantee that user's all-weather uses, and running all realizes automation, does not need the personal management, and easy to use, reliable, energy-conserving and environment-protective have the excellent popularization prospect.

Description of drawings:

Fig. 1 is the two vacuum all-glass heat pipe solar water heater structure schematic diagrames of the utility model.

Fig. 2 is the phantom of vacuum tube shown in Figure 1.

The specific embodiment:

As shown in Figure 1 and Figure 2, the two vacuum all-glass heat pipe solar water heaters of the utility model, comprise thermal-arrest header 3 and some vacuum tubes 4, some vacuum tubes 4 link to each other with thermal-arrest header 3 respectively simultaneously, vacuum tube 4 is totally-enclosed inside and outside two-layer vacuum tube 42,41, between this inside and outside two-layer vacuum tube 42,41 is vacuum layer 43, be provided with heat-conducting medium 44 in the inner glass tube 42, interior vacuum tube 42 sleeves are in outer vacuum tube 41, one end stretches out outer vacuum tube 41, this external part inserts in the thermal-arrest header 3, and outer vacuum tube 41 and thermal-arrest header 3 are for being tightly connected; Thermal-arrest header 3 is common water storage tank, promptly divide shell 31 and inner bag 32, be provided with heat-insulation layer 33 between shell 31 and the inner bag 32, thermal-arrest header 3 one ends are established cold water outlet, the other end is established the hot water mouth, the cold water outlet of thermal-arrest header 3 is connected with inlet channel 1, and the hot water mouth of thermal-arrest header 3 connects watering equipment, for drinking etc.The utility model is provided with electromagnetic valve I 2 on the inlet channel 1 of thermal-arrest header 3, hot water mouth's one end at thermal-arrest header 3 is provided with temperature sensor 51, temperature sensor 51 is the common temperature sensor 51 that can set the transmission signal according to temperature, 3 hot water mouths also are connected with boiled water tank 7 by pipeline at the thermal-arrest header, boiled water tank 7 is for having the water storage tank of heat-insulation layer, temperature sensor 51 all links to each other with controller 6 with electromagnetic valve I 2, this controller 6 is common acceptable signal and the controller 6 that can transmit signal again, as when water temperature rises to 90 ℃ in the thermal-arrest header 3, temperature sensor 51 promptly sends command signal to controller 6, controller 6 just makes electromagnetic valve I 2 open, the boiling water that the running water of water inlet pipe 1 just promotes in the thermal-arrest header 3 injects in the boiled water tank 7, when the water temperature in the thermal-arrest header 3 dropped to 88 ℃, electromagnetic valve I 2 was closed automatically.The utility model is provided with the auxilliary heater 8 of electricity and temperature, level sensor 52 in boiled water tank 7, equally, this temperature, level sensor 52 also are common temperature, the level sensor 52 that can transmit signal according to temperature and water level settings, auxilliary heater 8 of electricity and temperature, level sensor 52 all link to each other with controller 6, boiled water tank 7 also links to each other with water inlet pipe, also is provided with check valve 9 and electromagnetic valve II 10 on this connecting pipe.

Claims (3)

1, a kind of pair of vacuum all-glass heat pipe solar water heater, comprise thermal-arrest header and some vacuum tubes, thermal-arrest header one end is established cold water outlet, the other end is established the hot water mouth, it is characterized in that: inside and outside two glass tubes (42,41) of described vacuum tube (4) are the Totally enclosed vacuum pipe, be provided with heat-conducting medium (44) in the inner glass tube (42), inner glass tube (42) one ends stretch out outer glass pipe (41), and this external part is positioned at thermal-arrest header (3).

2, according to claim 1 pair of vacuum all-glass heat pipe solar water heater, it is characterized in that: the cold water outlet of described thermal-arrest header (3) is connected with inlet channel (1), this inlet channel (1) is provided with electromagnetic valve I (2), hot water mouth's one end of thermal-arrest header (3) is provided with temperature sensor (51), this hot water mouth links to each other with boiled water tank (7) by pipeline, and described temperature sensor (51) all links to each other with controller (6) with electromagnetic valve I (2).

3, according to claim 1 and 2 pair of vacuum all-glass heat pipe solar water heater, it is characterized in that: be provided with electric heating device (8) and temperature, level sensor (52) in the described boiled water tank (7), this heater (8) and temperature, level sensor (52) all link to each other with described controller (6), described boiled water tank (7) also is connected with water inlet pipe, is provided with check valve (9) and electromagnetic valve II (10) on water inlet pipe.