CN2473550Y

CN2473550Y - Solar water heater

Info

Publication number: CN2473550Y
Application number: CN01221851U
Authority: CN
Inventors: 王宏志; 王润强; 高荣宁; 高亚玲; 刘亚琼
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-04-27
Filing date: 2001-04-27
Publication date: 2002-01-23
Anticipated expiration: 2011-04-27

Abstract

A solar water heater comprises a press-resistance and seal water tank, a plurality of hot-pipe type vacuum tubes which are linked with the water tank and has function of heat exchange, a potable water pipe and a sewer pipe which are separately connected to the water tank, an electrothermal antifreezing sleeve which is sleeved on the potable water pipe and can automatically control the temperature in winter and a control valve which is provided under the antifreezing sleeve and is linked between the potable water pipe and the sewer pipe and can control water recycling. The utility model has the advantages of high outfall pressure without the effect of the installation height and automatic watering, being not easy to scale, high heating efficiency, long service life, being material-saving and space-saving because of large utilization ratio of the water tank and meanwhile being not polluted by the environment.

Description

Solar water heater

The utility model relates to the Application of Solar Energy field, particularly a kind of civilian solar water heater.

Now commercially available domestic solar water heater is pressure-bearing not, open (its water tank communicates with atmosphere) drowning formula solar water heater, the top of water tank is provided with the overflow steam vent that communicates with atmosphere, the bottom of water tank is provided with water inlet and the shared adapter of delivery port, the lower end of taking over links with upper hose and outlet pipe respectively by water supply valve and outlet valve, other has a control valve that is used for adjusting coolant-temperature gage, is connected between upper hose and the outlet pipe.Its vacuum tube (multitube) that is used for thermal-arrest of this solar water heater is inclined in the water tank downside side by side.The lower end closed of vacuum tube, its upper end directly O-ring seal by can not pressure-bearing put within the water tank, and the water that is heated in the vacuum tube directly carries out heat exchange with the interior water of water tank.

The defective of this water heater is:

1) it is to rely on height of water principle hot-water supply, when floor is low, and water outlet hydraulic pressure deficiency, in general EXIT POINT must be higher than 3 meters, just suitable the use.

2) its overflow, steam vent communicate with ambient atmosphere, the microorganism in the surrounding air, and pollutant is easy to enter in its water tank and pollutes, and heat loss is also bigger simultaneously, thereby makes the collecting efficiency step-down.

3) its upper and lower water---be the shared pipeline of hot water or cold water, often freeze and can't use winter because of pipeline at north cold area.

4) water in its vacuum tube is participated in cold and hot exchange directly and is higher than inwall and bottom fouling thereof at vacuum tube, thereby causes the thermal efficiency to descend, even can not use, so the life-span is short.

5) owing to must overflow, steam vent be set at water tank upper, the space in the water tank is water storage fully, thereby the space availability ratio of water tank is low, volume is big, manufacturing cost is high.

6) this solar water heater in use needs by feed-tank moisturizing manually, and high-order difficult grasp of water level was both inconvenient, also water wasting.Though can solve this problem by the method that in water tank, installs water level detecting and controlling additional, its poor reliability, must be when dispatching from the factory disposable being encapsulated in the water tank, in case break down, not only will open the outer heat-insulation layer of water tank, also will open water tank and keep in repair, its trouble degree is apparent.

The purpose of this utility model is to overcome above-mentioned defective, provide a kind of and be not subjected to the influence of solar water heater setting height(from bottom) and discharge pressure is big, antifreeze, but automatic water supplement, can not be subjected to environmental pollution, the collecting efficiency height, the life-span is long, can make full use of the water tank space and volume is little and the novel solar water heater that saves material.

The technical solution of the utility model is such:

A kind of solar water heater, comprise water tank, the water inlet pipe that links with it, outlet pipe, several that link with water tank are used for the vacuum tube of thermal-arrest, but water tank is the totally enclosed casing of a kind of pressure-bearing, described water inlet pipe and outlet pipe link with water tank alone, and the outlet of water inlet pipe is positioned at the below of water tank, the import of outlet pipe is positioned at the top of water tank: described vacuum tube is a kind of heat pipe type vacuum pipe, its body is the vacuum coated glass pipe, the lower end closed of body, the upper end of body is connected with the condensation end of conductive force together, but this end supporting roll sealed attachment is in water tank.

On the surface of described condensation end, be provided with the antiscale layer.

Also have one with described water tank split can be temperature automatically controlled the electric heating antifreezing set, it is socketed on the upper hose that links with described water inlet pipe; Be positioned under the antifreezing set, between the downcomer that upper hose reaches and described outlet pipe links, also be connected with one and can control the control valve that water circulates.

In described water tank, also be provided with the electric calorifie installation that when solar energy is not enough, is used for assisting heating.The utility model is a kind of solar water heater of airtight, pressure-bearing work, and its advantage is: 1) institute's heat supply water pressure foot; 2) can not be subjected to the pollution of surrounding environment bacterium; 3) can rely on the pressure of running water to realize automatic water supplement, overcome manual moisturizing inconvenience, water level is wayward, the shortcoming of maintenance difficult; 4) owing to adopted heat pipe type vacuum pipe (existing product), water in itself and the water tank is to carry out heat exchange by the condensation end that is sealed in the water tank, water in the water tank thereby can be at the vacuum in-tube fouling, on condensation end, also be provided with the antiscale layer in addition, further prevented incrustation scale formation thereon, stablize so the utility model thermal efficiency is high, the life-span prolongs.Can control the control valve that water circulates owing between upper and lower water pipe, be provided with one, when it is opened and upper and lower water lines when closing, the part pipeline of water tank and upper and lower water just can form a closed circuit, the electric heating antifreezing set with temperature automatically controlled effect that (upper hose) is set on this loop can be at ice up in winter and water heater time spent not, automatically pipeline is carried out low-temperature heat, thereby can in pipeline, form the temperature difference that is enough to make the water in it to circulate, thereby can prevent that pipeline from freezing.In addition, increase the measure of electric calorifie installation in water tank, in the time of can guaranteeing that cold and solar energy is not enough in the sky, the utility model still can reliablely and stablely provide hot water.

Be described further below in conjunction with accompanying drawing 1-2 and embodiment.

Fig. 1 is a structural representation of the present utility model (being installed in roof);

Fig. 2 is the cutaway view (heat pipe type vacuum pipe only is shown) of the water tank of the utility model.

Among Fig. 1, solar water heater described in the utility model comprises a horizontal totally enclosed cylindrical water tank 1 on support 7, the bottom of water tank 1 is connected with several heat pipe type vacuum pipes 4 that are used for absorbing solar heat side by side, its upper end has a condensation end 6 that the heat of being gathered in it can be carried out heat exchange, and condensation end 6 is actually a kind of full copper ratio-frequency welding solar heat pipe; Condensation end 6 is with water tank 1 pressure-bearing, be sealed within the water tank 1 firmly, and the solar heat that vacuum tube can be collected is delivered in the water in the water tank 1 thus, realizes utilizing the purpose of solar energy heating.In order to prevent on condensation end 6, to produce incrustation scale as far as possible, also scribble antiscale layer 8 thereon; The lower end of vacuum tube 4 is blind logical.

Heat pipe type vacuum pipe 4 can have a plurality of according to the capacity difference, its side by side, tilting being fixed on the support 7, be covered with the reflecting layer 14 of optically focused, reflex below it.

This water inlet tube of water heater 2 and outlet pipe 3 branch separately are arranged.The delivery port 21 of water inlet pipe 2 communicates with the bottom of water tank 1; 31 upper ends with water tank 1 of the import of outlet pipe 3 communicate.Cold water is entered by the bottom of water tank 1, and hot water is then ejected under the effect of last water hydraulic pressure by the top of water tank 1 and for using.

In order to guarantee the cold district in winter, do not use the solar water heater time spent, unlikely the freezing to death of upper and lower water pipe that it connected, also be provided with one with the anti-cold cover 9 of electric heating of water tank 1 split.Anti-cold cover 9 is (also can be socketed on the downcomer 11) that are socketed on the upper hose 10, is connected with a water circulation control valve 12 between upper hose 10 reaches.It is small and exquisite and cost is low that anti-cold cover can be done, and the heating element heater in it can be heating wire, ribbon heater or other heatings, also has on the anti-cold cover 9 to be used for the electric control element of thermometric, temperature control.

Waterproof jacket 9 only is used in cold area that need be antifreeze in winter, need close water circulation control valve 12 when using water heater, and at this moment upper and lower water pipe 10,11 and water tank 1 do not constitute the loop, and make solar water heater be in normal operating condition.When solar water heater usefulness finishes, for preventing that upper and lower water pipe 10,11 from freezing, control valve 12 should be opened, and make upper and lower water pipe 10,11 and water tank 1 constitute a closed-loop path, this moment antifreezing set 9 just can be carried out low-temperature heat on a section of upper hose 10 (or downcomer 11), because the temperature of this section is higher than the temperature of closed pipeline other parts, thereby the formation temperature difference, under the effect of this temperature difference, the water in the loop is slowly circulation voluntarily just, thereby can prevent that pipeline from freezing to death.

Because of the not enough use that influences solar water heater of overcast and rainy illumination, the auxiliary electric heater unit 13 that is made of electrothermal tube is housed also in water tank 1 for fear of cold district.

Claims

1. solar water heater, the water inlet pipe (2) that comprise water tank (1), links with it, outlet pipe (3), link with water tank (1) several be used for the vacuum tube (4) of thermal-arrest, it is characterized in that described water tank (1) but be the totally enclosed casing of a kind of pressure-bearing, described water inlet pipe (2) and outlet pipe (3) link with water tank (1) alone, and the outlet (21) of water inlet pipe (2) is positioned at the below of water tank (1), and the import (31) of outlet pipe (3) is positioned at the top of water tank (1); Described vacuum tube (4) is a kind of heat pipe type vacuum pipe, its body (5) is the vacuum coated glass pipe, the lower end closed of body (5), the upper end of body (5) are connected with the condensation end of conductive force (6) together, this end pressure-bearing, are connected in the water tank (1) liquid sealing.

2. solar water heater as claimed in claim 1 is characterized in that being provided with antiscale layer (8) on the surface of described condensation end (6).

3. solar water heater as claimed in claim 1 or 2, it is characterized in that also having one with described water tank (1) split can be temperature automatically controlled electric heating antifreezing set (9), it is socketed on the upper hose (10) that links with described water inlet pipe (2); Be positioned under the antifreezing set (9), between the downcomer (11) that upper hose (10) reaches and described outlet pipe (3) links, also be connected with one and can control the control valve (12) that water circulates.

4. according to claim 1 or 2 described solar water heaters, it is characterized in that in described water tank (1), also being provided with the electric calorifie installation (13) that when solar energy is not enough, is used for assisting heating.