CN100398937C - Non-contact solar heat collector - Google Patents

Abstract

In order to improve the stability and the durability of a solar water heater system and achieve the perfect combination with a building, the invention can provide the solar heat collector which can meet the requirement. The non-contact solar heat collector comprises an outer barrel (2), a heat insulation layer (3), an inner container (4), a plurality of vacuum tubes (8) and a fixing frame (14) for supporting the vacuum tubes (8), wherein the inner container (4) is arranged in the outer barrel (2), the heat insulation layer (3) is clamped between the inner container (4) and the outer barrel (2), the inner container (4) is provided with a water inlet and a water outlet, the non-contact solar heat collector is characterized in that aluminum wings (9) and a metal tube (10) are arranged in the vacuum tubes (8), the metal tube (10) is connected with the inner container (4), the connection part is sealed by a pressure-bearing steel double-clamping sleeve joint (7), one end of the metal tube (10) is sealed, the other end of the metal tube is directly communicated with the inner container (4) and is inserted into the middle of the inner container (4) to facilitate the full thermal circulation of media in the inner container (4), and the.

Description

Non-contact solar collector

technical field

The invention relates to a solar heat collector with a built-in heat-conducting metal tube in an all-glass vacuum heat collection tube, which is suitable for a solar water heating system with high requirements for stability performance and high requirements for building combination.

Background technique

There are also some split pressurized solar collectors on the market now, which are mainly divided into two types: 1. U-shaped tube collectors; 2. Heat pipe collectors. The former U-shaped tube heat collector is also a medium in the metal tube through forced circulation heat exchange, the amount of copper tube is more, the welding requirements are higher, and the cost is higher. The latter type of heat pipe collector uses a vacuumized copper tube, which contains a heat transfer medium that vaporizes at high temperature and condenses at low temperature. Due to the short life of the heat pipe, the life of the whole machine is also reduced, and the production cost is high and the price is high. .

Contents of the invention

In order to improve the stability and durability of the solar water heater system and achieve a perfect combination with the building, the utility model can provide a solar collector that can meet this requirement.

The technical scheme adopted in the present invention is:

The non-contact solar heat collector of the present invention comprises an outer barrel, an insulation layer, an inner tank, a plurality of vacuum tubes and a fixing frame for supporting the vacuum tubes, the inner tank is placed in the outer barrel, and a thermal insulation layer is installed between the inner tank and the outer barrel. The inner tank is provided with water inlet and outlet. It is characterized in that the vacuum tube is equipped with aluminum wings and metal tubes. The metal tube is connected with the inner tank. , the other end is directly connected to the inner tank and inserted into the middle of the inner tank to facilitate sufficient heat circulation with the medium in the inner tank, and the vacuum tube is inserted into the insulation layer through the outer barrel.

The aluminum wing adopts a multi-piece arc-shaped sheet structure, and is closely attached to the inner wall of the vacuum tube and the outer wall of the metal tube to fully transfer the heat from the inner wall of the vacuum tube to the metal tube.

The outer connection of the connection faucet at the connection between the metal pipe and the inner tank is sealed with a pressure-bearing steel double-barrel joint, which is convenient and quick to install.

The connection between the vacuum tube and the outer barrel is sealed with a silicone ring.

There is an adjustable tube support at the bottom of each vacuum tube.

Compared with the prior art, the present invention has the following advantages:

The non-contact solar heat collector of the present invention has good stability, can be perfectly combined with the building, and can operate under pressure. It is a metal tube solar heat collector without medium in the vacuum tube. The metal tube is directly connected with the inner tank. The medium gradually heats up through natural circulation in the metal tube, and then circulates the hot water in the inner tank back to the water storage tank through forced circulation. There is no medium in the vacuum tube, which can prevent the vacuum tube from blowing up. Even if multiple vacuum tubes are damaged, it will not affect the operation of the entire system.

The non-contact solar heat collector of the invention can overcome the disadvantages of the existing models, and has reasonable price and long service life. It can be directly connected to the building body through the fixing frame, the fixing is firm, and the overall structure is perfectly combined with the building.

Description of drawings

Figure 1 is a side sectional view of the collector.

Figure 2 is a front view of the collector.

Figure 3 is a schematic diagram of the internal structure of the vacuum tube.

Detailed ways

Below in conjunction with accompanying drawing, the present invention will be further described:

In the picture: 1-Bucket support 2-Outer barrel 3-Insulation layer 4-Inner liner 5-Connecting spout 6-Silicone ring 7-Pressure steel double-barrel joint 8-Vacuum tube 9-Aluminum wing 10-Metal tube 11-horizontal frame 12-adjustable tube holder 13-shield 14-fixed frame 15-outer glass tube 16-inner glass tube

As shown in Fig. 1 and Fig. 2, the non-contact solar heat collector of the present invention comprises a bucket holder 1, an outer bucket 2, an insulating layer 3, an inner tank 4 of an inlet and an outlet, a fixed frame 14, multiple A vacuum tube 8, a metal tube 10, an aluminum wing 9, and an inner tank 4 are placed in the outer barrel 2, and an insulating layer 3 is sandwiched between the two, and a barrel holder 1 is provided under the outer barrel 2. The vacuum tube 8 is composed of an outer glass tube 15 and an inner glass tube 16. As shown in FIG. 3 , the metal tube 10 is sheathed in the vacuum tube 8 and fits therein. One end of the metal tube 10 is sealed, and the other end is directly connected with the inner container 4. The space between the metal tube 10 and the inner container 4 is a heating medium, generally water can be used. The connection part is sealed with the connection water nozzle 5, and the outside of the connection water nozzle 5 is provided with a pressure-bearing steel double ferrule joint 7 and a metal pipe 10 for sealing. The metal tube 10 is inserted into the middle of the inner tank 4, which is conducive to sufficient heat exchange with the medium in the inner tank 4. The aluminum wing 9 adopts two arc-shaped aluminum pieces that fit up and down, that is, the upper piece of the aluminum wing as shown in Figure 3, The lower piece of the aluminum wing is fixed on the metal pipe 10. In this way, the solar energy absorbed by the vacuum tube 8 is transmitted to the metal tube 10 through the aluminum wing 9, and the metal tube 10 transmits the energy to the medium, and the medium heats up through natural circulation in the metal tube 10.

The vacuum tube 8 is inserted into the insulation layer 3 through the outer barrel 2, and the joint between the vacuum tube 8 and the outer barrel 2 is sealed with a silicone ring 6. The bottom of each vacuum tube 8 is provided with an adjustable tube support 12, so as to adjust the position of the vacuum tube 8 during installation. The lower part of the vacuum tube 8 is provided with a shield 13 , a horizontal frame 11 and a fixing frame 14 for protecting and supporting the vacuum tube 8 .

Because the present invention adopts the metal tube 10 to directly communicate with the inner tank 4, the medium heats up through natural circulation in the metal tube 10, and then returns to the inner tank 4 through forced circulation, and the medium does not go in the vacuum tube 8. It can prevent tube explosion, and the damage of single or multiple tubes will not affect the operation of the entire system. The solar heat collector is directly connected with the building body through the fixing frame 14, and is firmly fixed, and the overall structure is perfectly combined with the building.

Claims (3)

1. A non-contact solar heat collector, which comprises an outer barrel (2), an insulation layer (3), an inner tank (4), a plurality of vacuum tubes (8) and a fixing frame (14) for supporting the vacuum tubes (8) , the inner tank (4) is placed in the outer barrel (2), and an insulation layer (3) is sandwiched between the inner tank (4) and the outer barrel (2), and the inner tank (4) is provided with a water inlet and outlet, It is characterized in that the vacuum tube (8) is equipped with an aluminum wing (9) and a metal tube (10), and the metal tube (10) is connected with the inner tank (4), and the joint adopts a pressure-bearing steel double ferrule joint (7 ) is sealed, one end of the metal tube (10) is sealed, and the other end is directly connected to the inner tank (4), and inserted into the middle of the inner tank (4) to facilitate sufficient heat exchange with the medium in the inner tank (4), the vacuum tube (8 ) through the outer barrel (2) and inserted into the insulation layer (3), the aluminum wing (9) adopts a multi-piece arc-shaped sheet structure, and is closely attached to the inner wall of the vacuum tube (8) and the metal tube (10) The outer wall is to fully conduct the heat of the inner wall of the vacuum tube (8) to the metal tube (10). 2. The solar heat collector according to claim 1, characterized in that the connection between the vacuum tube (8) and the outer tub (2) is sealed with a silicone ring (6). 3. The solar heat collector according to claim 1, characterized in that each vacuum tube bottom is provided with an adjustable tube holder (12).

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