CN201449071U - Water tank of solar water heater - Google Patents

Abstract

The utility model relates to a water tank of a solar water heater, which is an improvement to the existing water tank of the solar water heater. The utility model is characterized in that an exhaust pipe is bended into the same shape as the periphery of the cross section of the water tank, the exhaust pipe is buried in a thermal insulating layer outside the inner liner of the water tank, the upper end of the exhaust pipe is inserted into the top layer of the water tank, and the lower end of the exhaust pipe stretches out of the thermal insulating layer and is communicated with the atmosphere. The utility model has the advantages that the water tank integrates the advantages of upward exhaust and downward exhaust and overcomes the defects of the two, the structure is novel, the heat dissipating performance of the exhaust structure is good, the manufacturing technology is simple and the production cost is reduced.

Description

Solar water heater water tank

Technical field

Utility model is about the improvement to solar water heater water tank, relates in particular to the improvement of water-heater water tank blast pipe.

Background technology

Solar water heater water tank is solar water heater water-storage and insulation core, for realizing that closed tank discharges water smoothly and go up water that a kind of easy mode is that water tank is provided with the blast pipe that is communicated with ambient atmosphere.Prior art blast pipe basic structure form has two kinds, a kind of is direct short blast pipe 1 (Fig. 1) inside and outside attemperater top is provided with a joining water box, this structure blast pipe, because gas exhaust piping is extremely short, directly communicate inside and outside the water tank 2, be unfavorable for water tank heat preserving, for example during the water tank malleation in the water tank heat very easily discharge from short blast pipe, very easily the external world is introduced water tank with respect to the water tank Cryogenic air again during the water tank negative pressure, during internal and external pressure balance, short blast pipe conducts heat also can loses heat, and these all can reduce temperature in the water tank, are unfavorable for water tank heat preserving.Another kind constitutes exhaust (Fig. 2) down for blast pipe 4 is radially passed by water tank, though blast pipe length is strengthened, above-mentioned deficiency makes moderate progress, but water tank adopts stainless steel inner container 2 usually, and blast pipe is because of passing water box, usually also adopt for example stainless steel tube of metal tube, the metal exhaust tube thermal conductivity is strong, pass the water tank hot water layer, can scatter and disappear because of the heat conduction causes heat, secondly, metal exhaust tube and stainless steel water tank inner bag need be by the welding antiseeps, not only increased the welding job amount, and weld gets rusty easily for a long time, causes seepage.Therefore still having is worth improved place.

The utility model content

The utility model purpose is to overcome the deficiency of above-mentioned prior art, and a kind of workload of neither increase making is provided, and is difficult for causing the solar water heater water tank that dispels the heat again.

The utility model purpose realizes, the main improvement is that straight-through blast pipe is curved and water tank cross section periphery similar shape, be embedded in the outer heat-insulation layer of inner water tank, both reached lengthening blast pipe length, directly do not pass the water tank water layer again, need not weld, can adopt the big nonmetal tubing of thermal resistance, plastic tube for example, thus reach the advantage of two kinds of blast pipe modes of collection prior art, overcome their shortcomings separately, realized the utility model purpose.Specifically, the utility model solar water heater water tank, comprise inner water tank and heat-insulation layer, and the inside and outside blast pipe of joining water box, it is characterized in that blast pipe curves and water tank cross section periphery similar shape, be embedded in the outer heat-insulation layer of inner water tank, the water tank top layer is inserted in the upper end, and the lower end is stretched out heat-insulation layer and communicated with atmosphere.

The said blast pipe of utility model curves and water tank cross section periphery similar shape, just general shape is identical, and be not necessarily accurately identical, its main purpose is the blast pipe that both extended, reduce internal-external heat exchange, simultaneously blast pipe is passed from the water tank inner aqueous layer, but around the tank outer wall setting, and manage and be located in the water tank heat-insulation layers, also can avoid adopting metal tube to cause the heat conduction.Curve and water tank cross section periphery similar shape, its length is not particularly limited, and for example can be around the water tank girth more than 1/4, so that enough length to be arranged, avoid causing heat loss by blast pipe, a kind of comparatively being suitably surrounded the water tank half cycle, certainly the suitably not special influence of lengthening or shortening.The same prior art in water tank cross section mostly adopts circular water tank, but the technical staff should be understood that, also be fine if water tank is the polygon of non-circle, be actual less employing.

The utility model solar water heater water tank, with respect to prior art, owing to make joining water box top and extraneous blast pipe into water tank cross section periphery similar shape bend pipe structure, long bend pipe blast pipe, the existing blast pipe of going up is made simple advantage, do not pass through water tank, do not need and tank weld, can adopt the big plastic tube of thermal resistance, following exhaust pipe range structure is arranged again, water tank top layer hot-air is difficult for the direct advantage that communicates with atmosphere, and blast pipe does not contact with water tank hot water, can heat conduction and heat radiation yet, thus leaking of water tank heat effectively reduced, overcome the deficiencies in the prior art, and keeping both advantages. non-welding blast pipe can adopt plastic tube, big thermal resistance has further reduced the heat transfer loss. for example when the water tank internal pressure greater than outside during air pressure, gas has reduced the direct convection losses of heat in the water tank by crooked long pipeline (50cm or more than) in the water tank; Outside equaling, the water tank internal pressure during air pressure, is in keeping warm mode in the case; When the water tank internal pressure less than outside during air pressure, the outer gas of water tank filters by the pipeline thermal of long blast pipe, heat loss is less equally. blast pipe pours into the water tank top layer, does not pass through inner water tank, need not weld, and manufacture craft is simple, can also reduce production costs.

Optimize specific embodiment below in conjunction with one; utility model is further understood in exemplary illustration and help; but the embodiment detail only is for utility model is described; do not represent utility model design whole technical schemes down; therefore should not be construed as the total technical scheme of utility model is limited; some are In the view of the technical staff; the unsubstantiality that does not depart from the utility model design increases and/or change; for example change or replace, all truely use novel protected scope so that technical characterictic with same or similar technique effect is simple.

Description of drawings

Fig. 1 is an exhaust solar water heater water tank structural representation on the prior art.

Fig. 2 is an exhaust solar water heater water tank structural representation under the prior art.

Fig. 3 is a utility model exhaust structure solar water heater water tank structural representation.

The specific embodiment

Embodiment: referring to Fig. 3, the utility model solar water heater water tank, stainless steel circular inner bladder water tank 2 is arranged, form with heat-insulation layer 3, one ABS pipe 5 bends to the semicircular arc with stainless steel inner container periphery similar shape, be embedded in the outer heat-insulation layer 3 of inner water tank, upper end bending 5.1 pours into tank top, and lower end bending 5.2 passes from water tank heat-insulation layers with atmosphere and communicates.

To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; the for example change of water tank cross sectional shape; the change of blast pipe length; or the like unsubstantiality change, can be employed equally, can both realize and basic identical function of the foregoing description and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection domain.

Claims (3)

1. solar water heater water tank comprises inner water tank and heat-insulation layer, and the inside and outside blast pipe of joining water box, it is characterized in that blast pipe curves and water tank cross section periphery similar shape, be embedded in the outer heat-insulation layer of inner water tank, the water tank top layer is inserted in the upper end, and the lower end is stretched out heat-insulation layer and communicated with atmosphere.

2. according to the described solar water heater water tank of claim 1, it is characterized in that blast pipe surrounds the water tank half cycle.

3. according to claim 1 or 2 described solar water heater water tanks, it is characterized in that blast pipe is a plastic tube.

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