CN2470761Y - Water-tank of solar water-heater - Google Patents

Abstract

The utility model relates to a solar water heater water tank, in particular to a connection structure between the water tank and a vacuum tube in the solar water heater, comprising a water tank body, the water tank body is provided with a water inlet and outlet, and a heat conduction sleeve protruding into the water tank. The body of the water tank is provided with at least one opening through which the heat-conducting sleeve is inserted into the water tank, and the connection end of the heat-conducting sleeve is separated from the wall of the water tank by an insulating layer to form an insulating and sealed connection structure. The utility model can effectively avoid galvanic corrosion in the water tank on the basis of ensuring firm and convenient connection between the water tank and the heat pipe, thereby prolonging the service life of the water tank.

Description

solar water heater tank

The utility model relates to the utilization of solar energy, in particular to a heat pipe type solar water heater water tank, in particular to the connection structure between the water tank and the vacuum tube in the solar water heater.

In the existing heat pipe type vacuum solar water heater, the water tank is an indispensable facility, and the condensation end of the heat pipe is arranged in the water tank, and performs heat exchange with the water in the water tank. In order to connect the heat pipe with the water tank, at least one opening is arranged on the water tank, and after the condensation end of the heat pipe is inserted through the opening, the joint is sealed. Because the temperature of the condensation end of the heat pipe is extremely high, the commonly used rubber sealing ring is very easy to age, and thus the problem of water leakage occurs. In addition, when the condensing end squeezes into the sealing ring for installation or replacement, it is very inconvenient to insert and remove.

In order to solve the above problems, the utility model patent of Beijing Sunda Solar Energy Technology Co., Ltd. named "water heater water tank" in China: (the patent No. is 99201063.2) proposes an improved scheme. The solution is to set a heat conducting sleeve on the body of the water heater tank, which protrudes into the water tank. On the other hand, a relatively firm rigid sealing connection is formed with the wall of the water tank body, and this structure effectively solves the defects of conventional rubber seals. However, it has been proved by practice that this connection structure brings new technical defects.

At present, the anti-corrosion technology of civil enamel water tanks using magnesium anodes is widely used. Moreover, detecting the consumption of the magnesium anode in the water tank or its consumption speed can accurately detect the life of the water tank, which has also become a very convenient detection method for the enamel quality of the enamel water tank.

As we all know, impure water must be mixed with some impurities, which can form an electrochemical corrosion effect on the water storage container. In order to prevent this electrochemical corrosion, water heater tanks are usually made of corrosion-resistant materials, such as enamel tanks. The enamel water tank is hung with an enamel layer on the inner wall of the water tank. However, this kind of enamel water tank is first hung with enamelling on the inner wall of the water tank, and then there are water inlets and outlets at some places connected with external parts, and welded at one open end. Upper end cap. The enamel layer will be damaged at these water inlets and outlets, as well as the welding connection with the end cap, and the damaged part of this enamel layer is very easy to be corroded, and the service life of the water tank is greatly shortened.

At present, the most effective solution is to add a magnesium anode inside the water tank. The magnesium anode is made of a magnesium alloy whose potential is much lower than that of iron or copper. When a metal with a lower potential and a metal with a higher potential contact each other in the same conductive solution, a battery will be formed, which will accelerate the corrosion of the metal with a lower potential. During this corrosion process, the metal with a lower potential will also flow to a higher potential. A protective layer is formed on the surface of the metal with high potential, which greatly delays the corrosion rate of the metal with high potential. Just using this principle, after adding a magnesium anode in the enamel water tank, since the potential of the metal magnesium is much lower than that of the metal iron, when the two are immersed in water at the same time, the metal magnesium will form an anode to accelerate its corrosion. In addition, it will form a protective layer on the exposed iron surface to delay its corrosion rate, thereby prolonging the service life of the water tank.

In the above-mentioned prior art, the heat conducting sleeve is usually made of copper material with better thermal conductivity, so when it is fixedly connected with the inner wall of the box, an electric current is formed between the heat conducting sleeve and the inner wall of the box. The flow of electrons in the electrical circuit increases the corrosion current. This kind of galvanic corrosion greatly accelerates the consumption rate of the magnesium anode in the enamel water tank. After the magnesium anode is consumed, the iron surface at the leaking enamel on the inner wall of the water tank will form a battery with the copper casing, and the potential is low. Because the iron surface of the copper becomes an anode, the corrosion is accelerated until the iron surface is completely corroded, causing the water tank liner to perforate and leak, thus greatly reducing the service life of the enamel water tank. According to the current testing methods for civil enamel water tanks, it is difficult for enamel water tanks of this structure to pass the testing standards.

The purpose of this utility model is to provide a solar water heater water tank, which can effectively avoid galvanic corrosion in the water tank on the basis of ensuring a firm and convenient connection between the water tank and the heat pipe, thereby prolonging the service life of the water tank.

The purpose of this utility model is achieved as follows: a solar water heater water tank includes a water tank body, the water tank body is provided with a water inlet and outlet, and a heat conducting sleeve protruding into the water tank, it is characterized in that the water tank body There is an opening through which the heat conducting sleeve is inserted into the water tank, and the connection end of the heat conducting sleeve is separated from the wall of the water tank by an insulating layer to form an insulating and sealed connection structure.

The connection end of the heat conduction sleeve can be provided with a stopper and an external thread, the connection end and the inner wall of the water tank are separated by an insulating layer, and the locking nut is locked from the outside of the water tank to the external thread of the connection end of the heat conduction sleeve to form a Insulated sealed connection. The stopper is ring-shaped and clamped on the inner wall of the water tank. The insulating sealing layer may be formed by a U-shaped sealing ring.

The outer wall of the opening of the water tank may be provided with a fixing ring, the fixing ring is provided with an internal thread, the connection end of the heat conducting sleeve is clamped on the outer wall of the water tank, and the locking nut and the described The fixing ring is locked, and the heat conducting sleeve, the locking nut and the wall of the water tank are separated by an insulating layer to form an insulating and sealed connection. The fixing ring can be welded on the outer wall of the water tank. Insulation and sealing layers can be combined. The connection end of the heat conduction sleeve can be an annular stopper, and the ring stopper can be formed by flanging the heat conduction sleeve. The center of the locking nut is slightly larger than the inner diameter of the thermal sleeve.

The effect of the utility model is remarkable. It is well known that an effective method to avoid galvanic corrosion is to avoid interconnection between different metals. In the present utility model, the heat-conducting sleeve and the water tank wall body are insulated and sealed, which avoids the fixed connection between the copper heat-conducting sleeve and the water tank, so that no electrical circuit will be formed between the copper heat-conducting sleeve and the water tank. It effectively avoids the consumption of magnesium anode by the copper thermal sleeve, thus greatly prolonging the service life of the water tank. In addition, in the utility model. There is no direct connection structure between the heat conducting sleeve and the water tank, so only one through hole is required on the water tank, which simplifies the processing of the water tank. Moreover, in the utility model, only the locking nut locks the heat conducting sleeve and the insulating layer on the wall of the water tank, and the structure is simple. When the sealing structure needs to be replaced, just loosen the locking nut, and the replacement operation is convenient and quick. .

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment 1;

Fig. 2 is a schematic structural diagram of Embodiment 2 of the utility model.

The utility model is described in detail below in conjunction with embodiment and accompanying drawing as follows:

Example 1

As shown in Figure 1, the utility model includes a water tank body 1 and an enamel layer 4 located on the inner wall of the water tank body 1 and an insulating layer 6 coated on the outside of the water tank body 1. The water tank body 1 is provided with a water inlet and outlet, and The heat conduction sleeve 2 protruding into the water tank body 1, the water tank body 1 is provided with an opening 11, the heat conduction sleeve 2 is inserted into the water tank body 1 through the opening 11, and the connection end 21 of the heat conduction sleeve 2 is connected to the water tank wall The space between them is separated by insulating layer 3 to form an insulating and sealed connection structure.

In this embodiment, the connection end 21 of the heat conduction sleeve 2 can be provided with a stopper 211 and an external thread 212, the connection end 21 is separated from the inner wall of the water tank by the insulating layer 3, and the locking nut 5 is connected from the outside of the water tank body 1. It is locked with the external thread 211 of the connecting end 21 of the heat conducting sleeve 2 to form an insulating and sealed connection. The insulation and sealing connection between the heat conduction sleeve 2 and the water tank wall body 1 avoids the fixed connection between the copper heat conduction sleeve 2 and the water tank body 1, so that no electric current is formed between the copper heat conduction sleeve 2 and the water tank body 1. circuit, effectively avoiding the consumption of the magnesium anode by the copper thermal sleeve 2, thus greatly prolonging the service life of the water tank.

As shown in FIG. 1 , the connection end 21 of the heat conducting sleeve 2 can be provided with a stopper 211 in the shape of a ring, which is clamped on the enamel layer 4 of the water tank. The insulating layer 3 can be formed by a U-shaped sealing ring. In this embodiment, when installing the water heater, it is enough to insert the heat pipe condensation end 71 of the vacuum heat collecting tube 7 of the water heater into the heat conducting sleeve 2, and the operation is simple and easy. The heat absorbed by the vacuum heat collecting tube 7 can be introduced into the water heater tank by the heat pipe condensing end 71 through the heat conducting sleeve 2 to heat the water in the water heater.

In this embodiment, since the heat-conducting sleeve 2 and the water tank body 1 are insulated and sealed through the insulating layer 3, there is no direct connection structure, so only one through hole 11 is required on the water tank, which simplifies the processing technology of the water tank . Moreover, as shown in Figure 1, in this embodiment, only the lock nut 5 is used to lock the heat conducting sleeve 2 and the insulating layer 3 on the wall of the water tank, the structure is simple, and when the sealing structure needs to be replaced, just release the lock Tighten the nut 5, the operation of replacement can be carried out conveniently and quickly.

Example 2

As shown in Figure 2, the utility model includes a water tank body 1 and an enamel layer 4 located on the inner wall of the water tank body 1 and an insulating layer 6 coated on the outside of the water tank body 1. The water tank body 1 is provided with a water inlet and outlet, and The heat conduction sleeve 2 protruding into the water tank body 1, the water tank body 1 is provided with an opening 11, the heat conduction sleeve 2 is inserted into the water tank body 1 through the opening 11, and the connection end 21 of the heat conduction sleeve 2 is connected to the water tank wall The space between them is separated by insulating layer 3 to form an insulating and sealed connection structure. The connecting end 21 of the heat conducting sleeve 2 can be an annular stopper, and the annular stopper can be formed by flanging the heat conducting sleeve 2 .

In this embodiment, the outer wall of the opening 11 of the water tank body 1 can be welded with a fixing ring 8, the fixing ring 8 is provided with an internal thread 81, and the connection end 21 of the heat conducting sleeve 2 is clamped between the water tank body 1 and the heat conducting sleeve. The insulating layer 3 between the tubes 2 is locked with the fixed ring 8 through the locking nut 5, and the insulating layer 3 is separated between the heat conducting sleeve 2, the locking nut 5 and the water tank body 1 to form an insulating and sealed connection. . The insulation and sealing connection between the heat conduction sleeve 2 and the water tank wall body 1 avoids the fixed connection between the copper heat conduction sleeve 2 and the water tank body 1, so that no electric current is formed between the copper heat conduction sleeve 2 and the water tank body 1. circuit, effectively avoiding the consumption of the magnesium anode by the copper thermal sleeve 2, thereby effectively prolonging the service life of the water tank.

As shown in FIG. 2 , the insulating layer 3 is generally composed of an insulating layer 31 and an insulating layer 32 for the convenience of processing and installation. The central aperture of the locking nut 5 is slightly larger than the inner diameter of the heat conducting sleeve 2 .

In this embodiment, when installing the water heater, it is enough to insert the heat pipe condensation end 71 of the vacuum heat collecting tube 7 of the water heater into the heat conducting sleeve 2, and the operation is simple and easy. The heat absorbed by the vacuum heat collecting tube 7 can be introduced into the water heater water tank by the heat pipe condensation end 71 through the heat conduction sleeve 2, and the water in the water heater water tank is heated.

In this embodiment, since the heat-conducting sleeve 2 and the water tank body 1 are insulated and sealed through the insulating layer 3, there is no direct connection structure, so only one through hole 11 is required on the water tank, which simplifies the processing technology of the water tank . Moreover, as shown in Figure 2, in this embodiment, only the lock nut 5 locks the heat conducting sleeve 2 and the insulating layer 3 on the wall of the water tank, and the structure is simple. When the sealing structure needs to be replaced, just loosen the lock Tighten the nut 5, the operation of replacement can be carried out conveniently and quickly.

Since the connection end of the heat conduction sleeve 2 of this embodiment is completely arranged outside the water tank body 1, during implementation, after the water tank body 1 has hung the enamel layer 4, the insulating layer 3 and the heat conduction sleeve can be installed directly from the outside of the water tank body 1. Tube 2 and its connection end 21 and other components, and then lock the heat-conducting sleeve 2 and the insulating layer 3 on the water tank with the lock nut 5, and the operation is simple and convenient. And the fixing ring 8 is also welded on the outer wall of the water tank body 1, and the welding process is relatively simple.

The above descriptions are preferred embodiments of the present utility model, and are only used to illustrate the present utility model, rather than to limit the present utility model.

Claims (9)

1, a kind of solar water heater water tank, include a tank body, tank body is provided with intake-outlet, and the thermal conducting sleeve that in water tank, protrudes into, it is characterized in that being provided with at least on the described tank body opening, thermal conducting sleeve is inserted in water tank by this opening part, between the link of described thermal conducting sleeve and the water tank wall by insulating barrier at interval, to constitute the insulated enclosure syndeton.

2, a kind of solar water heater water tank according to claim 1, the link that it is characterized in that described thermal conducting sleeve can be provided with backstop and external screw thread, between this link and tank inner wall by insulating barrier at interval, and the locking of the external screw thread of the link of and thermal conducting sleeve outside from water tank by lock nut, constitute insulated enclosure and connect.

3, a kind of solar water heater water tank according to claim 2 is characterized in that described backstop in the form of a ring, and is arranged in the tank inner wall face.

4, a kind of solar water heater water tank according to claim 2 is characterized in that described insulated enclosure layer can be made of the U RunddichtringO.

5, a kind of solar water heater water tank according to claim 1, the outside wall surface that it is characterized in that described water tank opening part can be provided with retainer ring, this retainer ring is provided with internal thread, the link of described thermal conducting sleeve is arranged on the outside wall surface of water tank, and in locking nut and the locking of described retainer ring, between thermal conducting sleeve, locking nut and water tank wall, by insulating barrier at interval, constitute insulated enclosure and connect.

6, a kind of solar water heater water tank according to claim 5 is characterized in that described retainer ring can be welded on the tank outer wall.

7, a kind of solar water heater water tank according to claim 5 is characterized in that capable of being combined the forming of described insulated enclosure layer.

8, a kind of solar water heater water tank according to claim 5 is characterized in that the link of described thermal conducting sleeve can be the backstop of a ring-type, and this ring-type backstop can be formed by the thermal conducting sleeve flange.

9, a kind of solar water heater water tank according to claim 5 is characterized in that the center bore of described locking nut is slightly larger than the internal diameter of thermal conducting sleeve.

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