Flat medium circulation solar water heater
Technical field
The utility model belongs to flat solar water heater's technical field.
Background technology
In the prior art, solar water heater is made up of heat collector and attemperater, heat collector is installed on the support, be connected with tube connector between heat collector and the water tank, upper header and lower collector pipe are installed in the shell of heat collector, the thermal-arrest fin is installed between the upper and lower collector, the attemperater bottom is equipped with water inlet pipe, top is equipped with outlet pipe, tank top is equipped with exhaust outlet, and the bottom is equipped with sewage draining exit, and the water tank side is reserved with the electrically heated rod installing port, the upper header of heat collector directly inserts the upper end of attemperater, and the lower collector pipe of heat collector inserts the attemperater lower end; Water heater is when work, and the water that is subjected to the solar radiation heating circulates between heat collector and water tank, and the coolant-temperature gage in heat collector and the water tank is raise.Hot water mainly accumulates in the water tank, and being emitted by the outlet pipe of water tank upper provides use, and after hot water was emitted, cold water flowed into the water yield in the subsidiary water tank by the water inlet pipe of water tank bottom.
Though this solar water heater thermal efficiency is higher; but because water heater is fixedly mounted on outdoor; in the winter of cold; be subjected to the influence of outdoor cryogenic conditions; the heat collector of solar water heater and water tank the phenomenon that water freezes occurs through regular meeting; volumetric expansion when water freezes, easy heat collector and water tank spalling with water heater.Therefore, this solar water heater in use needs frequent maintenance.
Because constantly to high level development, high building resident family is more for modern house, the roof area is limited, and building water supply pressure reduction is bigger, and the past is installed in the mode of house roof, the requirement of incompatible high-rise house environment for use with solar water heater.For adapting to the requirement of this development of the situation, when high building designs, people begin the solar water heater design and installation on the side wall of high building house, this new mounting means, though solved solar water heater is installed in the technical problem that the high-rise building roof exists, in the solar water heater use, in case the endure cold problem of spalling of heat collector and water tank occurs, the maintenance personal will arrive building side maintenance solar energy, and its difficulty is bigger.Therefore, solar water heater is installed in the high-rise building side, require solar water heater that frost resistance is preferably arranged, can under non-maintaining situation, use for a long time.Existing flat solar water heater's anti-freezing property is relatively poor, the requirement of incompatibility high building house development.
The utility model content
In prior art, bursting by freezing appears in flat solar water heater's heat collector and water tank in the winter time easily, the problem of incompatibility high building housing environment instructions for use, and the utility model provides a kind of flat medium circulation solar water heater.This water heater technical scheme is as follows:
Flat medium circulation solar water heater, form by heat collector and attemperater two parts, upper header and lower collector pipe are installed in the shell of heat collector, on, the thermal-arrest fin is installed between the lower collector pipe, attemperater top is equipped with water inlet pipe, the bottom is equipped with outlet pipe, tank top is equipped with exhaust outlet, the bottom is equipped with sewage draining exit, the water tank side is equipped with electrically heated rod, and heat-exchange tube is installed in attemperater, and the feed tube of heat-exchange tube is connected with the upper header of heat collector, the drain pipe of heat-exchange tube is connected with the lower collector pipe of heat collector, on the drain pipe of heat-exchange tube forced circulation pump is installed.
The utility model is when work, the collector of heat collector and heat-exchange tube form an independently circulation line, wherein can inject freeze proof heat exchange medium, medium circulates in the independent loops pipeline of heat collector and heat-exchange tube under the promotion of forced circulation pump.When thermal medium flows to heat collector, heated by solar radiation, the MEDIA FLOW after the heating is passed to water in the water tank with heat when the heat-exchange tube of water tank, and thermal medium flows to heat collector again and is heated once more afterwards, so just finishes a working cycles.Through after the working cycles repeatedly, the water in the water tank constantly absorbs heat from thermal medium, is heated to form hot water.
Adopt technique scheme,, avoid heat collector to be installed in the problem of the outdoor spalling of enduring cold owing in the collector of heat collector, adopt freeze proof heat exchange medium; Owing to adopt forced circulation pump to promote medium circulation, thereby the infield of water-heater water tank can arrange arbitrarily, water tank can be arranged in indoor, the problem of having avoided the water tank water to freeze.After adopting the technical program, solved the problem that water freezes in water-heater water tank and the heat collector, the maintenance rate of water heater is reduced greatly, water heater just can adapt to high-rise building user's needs like this.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
The specific embodiment
Embodiment: as shown in Figure 1, flat medium circulation solar water heater, form by heat collector 1 and attemperater 6 two parts, upper header 2 and lower collector pipe 14 are installed in the shell of heat collector 1, on, thermal-arrest fin 3 is installed between the lower collector pipe, water inlet pipe 11 and outlet pipe 5 are installed on the attemperater 6, attemperater 6 tops are equipped with exhaust outlet 7, the bottom is equipped with sewage draining exit 10, attemperater 6 sides are equipped with electrically heated rod 8, and heat-exchange tube 9 is installed in attemperater 6, and the feed tube 4 of heat-exchange tube 9 is connected with the upper header 2 of heat collector, the drain pipe 13 of heat-exchange tube is connected with the lower collector pipe 14 of heat collector, and forced circulation pump 12 is installed on drain pipe 13.