CN208253977U - vacuum tube pressure-bearing type solar water heater - Google Patents

Abstract

The utility model discloses vacuum tube pressure-bearing type solar water heaters, including sealing type cistern, vacuum tube, bracket, watering pipeline and drainage pipeline, the jack with vacuum tube coaxial line is provided in liner lower part, diversion pipe is equipped between vacuum tube and liner, diversion pipe is made of inserting section and fixed section, the inserting section is inserted into the jack of liner, the inner wall or outer wall fixing seal of the fixed section and vacuum tube nozzle, the internal diameter of the inserting section is 8~40 ㎜, it is sealed between inserting section and the jack of liner using sealing ring, the connection structure for preventing diversion pipe from deviating from from the jack of liner is additionally provided on the diversion pipe and liner, this vacuum tube pressure-bearing type solar water heater structure is simple, the thermal efficiency is high, bath comfort, it is at low cost, with good popularization and application foreground.

Description

Vacuum Tube Pressurized Solar Water Heater

technical field

The utility model relates to the field of solar heat utilization, in particular to a closed solar water heater.

Background technique

Closed solar water heaters are also called pressurized solar water heaters. They have the advantages of unlimited installation positions and high water outlet pressure. Generally, they are always connected to tap water sources. When the hot water outlet is closed, the entire system is under great pressure. The pressurized solar water heaters currently on the market generally have an indirect heat exchange structure, and heat exchange components are generally arranged inside the water tank, such as heat exchange jackets, coils or copper heat pipes. The jacket type or coil type water tank is generally connected to the heat collector, and its vacuum tube does not directly flow water, but is equipped with a metal flow pipe inside with a heat exchange medium; the copper heat pipe type may not be equipped with a heat collector, and the copper heat pipe evaporation section Inserted into the vacuum tube, the condensing section is installed in the inner tank of the water tank, with a compact structure. There is no water in the vacuum tubes of the above three pressure-bearing solar water heaters. The heat absorbed by the metal runner tubes or copper heat pipes comes from the heat absorbed by the aluminum fins arranged in the vacuum tubes. The problem of low thermal efficiency and large heat loss at the nozzle of the vacuum tube, the energy efficiency of the whole system is low, and the manufacturing process is complicated and the cost is high. Therefore, be badly in need of designing a kind of compact structure, high thermal efficiency, the pressurized solar water heater with low manufacturing cost.

Contents of the invention

The technical problem to be solved by the utility model is to provide a vacuum tube pressure-bearing solar water heater with compact structure, high thermal efficiency, low manufacturing cost and easy to use in view of the shortcomings of the above-mentioned prior art.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a vacuum tube pressure-bearing solar water heater, including a closed water tank, a vacuum tube, a bracket, a water supply pipeline and a sewage pipeline, and a coaxial line with the vacuum tube is opened at the bottom of the inner tank. The jack is provided with a guide tube between the vacuum tube and the inner tank. The guide tube is composed of a plug-in section and a fixed section. The plug-in section is inserted into the jack of the inner tank. The fixed section and the vacuum tube The inner wall or outer wall of the mouth is fixed and sealed, and the diversion tube and the vacuum tube are connected as a whole. The inner diameter of the insertion section is 8-40mm, and the sealing ring is used to seal the insertion section and the socket of the liner. A connecting structure is also provided on the flow tube and the inner tank to prevent the diversion tube from detaching from the socket of the inner tank, and the connecting structure is a rigid connection.

Preferably, two symmetrical baffles are arranged below the jack of the inner tank, and the baffles are welded and fixed to the outer wall of the inner tank, and two stoppers are arranged on the fixed section, and the stoppers are arranged symmetrically along the diameter direction , the distance between the outermost edge of the stopper is greater than the distance between the two baffles, and after the guide tube is inserted into the jack of the inner tank and rotated at a certain angle, the stopper of the fixed section enters the gap between the baffle plate and the inner tank. After the water tank is filled with water, the vacuum tube is under pressure, and the block of the diversion tube is in contact with the baffle plate, offsetting the axial force that the vacuum tube is extruded by the water pressure, and the vacuum tube tailstock is no longer subjected to axial force.

Preferably, a nut coaxial with the jack is provided under the jack of the inner tank, a threaded joint matching the nut is provided on the fixed section of the guide tube, and the guide tube is inserted into the jack of the inner tank And after rotating a certain angle, the threaded joint is screwed into the nut. After the water tank is filled with water, the vacuum tube is under pressure, and the connection between the threaded joint and the nut coaxial with the inner liner hole fixes the diversion tube on the water tank, offsetting the axial force of the vacuum tube being squeezed out by the water pressure, and the tail seat of the vacuum tube does not Then bear the axial force.

Preferably, the fixed section of the guide tube is a cover with a central hole, the plug-in section of the guide tube is inserted into the hole of the cover and welded and sealed, and the cover is fixed and sealed with the outer wall of the nozzle of the vacuum tube .

Preferably, the nozzle of the vacuum tube is provided with a threaded connection section, the cover is provided with a matching connection thread, and the end surface of the cover in contact with the top of the threaded connection section is provided with a gasket.

Preferably, the fixing method of the cover and the nozzle of the vacuum tube is resin glue bonding. The resin glue is coated in the gap between the cover and the vacuum tube, and after curing, the guide tube and the vacuum tube are connected as a whole.

The beneficial effects of the utility model are:

1. The pressure of the inner tank of the water tank is transmitted to the inner cavity of the vacuum tube through the diversion tube, and the vacuum tube is designed to withstand pressure up to 0.6MPa, which fully meets the pressure requirements. The above-mentioned diversion tube and the inner tank are also provided with a connection structure to prevent the diversion tube from coming out of the socket of the inner tank. The diversion tube and the inner tank are rigidly connected, and the tail seat of the vacuum tube is basically unstressed, which reduces the load of the bracket. Improve the security and stability of the system and save costs;

2. After the solar radiation absorbed by the inner tube of the vacuum tube is converted into heat energy, it is directly transferred to the water in the inner tube. According to the principle of natural circulation, the water molecules with higher temperature enter the inner tank through the diversion tube, and the temperature in the inner tank is relatively high. The low water molecules flow into the diversion tube, the hot water goes up, and the cold water sinks to form a convective heat transfer effect, coupled with the heat conduction effect of the heat transfer tube, the water in the inner tank is continuously heated, and the heat transfer is efficient and the temperature rises quickly;

3. The nozzle of the vacuum tube is provided with a cover with openings, and the cover and the outer wall of the vacuum tube nozzle are fixed and sealed by resin glue, which is convenient for glue application. Take the vacuum tube with an outer diameter of 58 mm that is widely used in the market as an example. The test proves that when the glue thickness is 0.1-0.5mm and the bonding area is ^20cm2 , the bonding strength of the bonding surface has exceeded the tensile strength of the vacuum tube glass, fully meeting the pressure bearing requirements;

4. When installing the vacuum tube, insert the diversion tube into the socket of the inner tank and rotate it at a certain angle, the stopper of the fixed section enters the gap between the baffle plate and the inner tank or the threaded joint is screwed into the nut to complete the installation, which is convenient and quick , easy to repair and replace.

Description of drawings

Fig. 1 is a schematic structural view of a vacuum tube pressure-bearing solar water heater of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of a vacuum tube pressure-bearing solar water heater provided by an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of a vacuum tube pressurized solar water heater provided by another embodiment of the present utility model.

In the figure, 1: water tank; 2: bracket; 3: vacuum tube; 3-1: threaded connection section; 4: liner; 5: diversion tube; 5-1: fixed section; 5-2: plug-in section; 6 : sealing ring; 7: baffle; 8: block; 9: gasket; 10: nut; 11: threaded joint.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Example 1:

As shown in Figures 1 and 2, the vacuum tube pressurized solar water heater includes a closed water tank 1, a vacuum tube 3, a bracket 2, an upper water pipeline and a lower water pipeline. The jack is provided with a guide tube 5 between the vacuum tube 3 and the inner tank 4. The guide tube 5 is composed of a plug-in section 5-2 and a fixed section 5-1, and the plug-in section 5-2 is inserted into the inner tank. 4, the fixed section 5-1 is fixed and sealed with the inner or outer wall of the nozzle of the vacuum tube 3, and the guide tube 5 and the vacuum tube 3 are connected as a whole, and the inner diameter of the plug-in section 5-2 is 8～ 40㎜, the sealing ring 6 is used to seal between the plug-in section 5-2 and the jack of the inner tank 4, and the guide tube 5 and the inner tank 4 are also provided to prevent the diversion tube 5 from the jack of the inner tank 4 The connection structure that comes out of the middle, the connection structure is a rigid connection. Two symmetrical baffles 7 are arranged below the jack of the inner container 4, and the baffles 7 are welded and fixed to the outer wall of the inner container 4, and the fixed section 5-1 is provided with two stoppers 8, the stoppers 8 is arranged symmetrically along the diameter direction, the distance between the outermost edge of the stopper 8 is greater than the distance between the two baffles 7, and after the guide tube 5 is inserted into the jack of the inner tank 4 and rotated at a certain angle, the stopper of the fixed section 5-1 8 enters in the gap between baffle plate 7 and liner 4. After the water tank 1 is filled with water, the vacuum tube 3 is under pressure, and the block 8 of the draft tube 5 is in contact with the baffle plate 7, offsetting the axial force that the vacuum tube 3 is extruded by the water pressure, and the tailstock of the vacuum tube 3 is no longer subject to the axial force.

Further, the fixed section 5-1 of the guide tube 5 is a cover with a central opening, and the insertion section 5-2 of the guide tube 5 is inserted into the hole of the cover and welded and sealed. It is fixed and sealed with the outer wall of the nozzle of the vacuum tube 3 .

Further, the nozzle of the vacuum tube 3 is provided with a threaded connection section 3-1, and the cover is provided with a matching connecting thread, and the end surface of the cover in contact with the top of the threaded connection section 3-1 A gasket 9 is provided.

Further, the fixing method between the cover and the nozzle of the vacuum tube 3 is resin glue bonding. The resin glue is coated in the gap between the cover and the vacuum tube 3, and after curing, the guide tube 5 and the vacuum tube 3 are connected as a whole.

Example 2:

As shown in Figures 1 and 3, the vacuum tube pressurized solar water heater includes a closed water tank 1, a vacuum tube 3, a bracket 2, an upper water pipeline and a lower water pipeline. The jack is provided with a guide tube 5 between the vacuum tube 3 and the inner tank 4. The guide tube 5 is composed of a plug-in section 5-2 and a fixed section 5-1, and the plug-in section 5-2 is inserted into the inner tank. 4, the fixed section 5-1 is fixed and sealed with the inner or outer wall of the nozzle of the vacuum tube 3, and the guide tube 5 and the vacuum tube 3 are connected as a whole, and the inner diameter of the plug-in section 5-2 is 8～ 40㎜, the sealing ring 6 is used to seal between the plug-in section 5-2 and the jack of the inner tank 4, and the guide tube 5 and the inner tank 4 are also provided to prevent the diversion tube 5 from the jack of the inner tank 4 The connection structure that comes out of the middle, the connection structure is a rigid connection. A nut 10 coaxial with the jack is provided below the jack of the liner 4, and a threaded joint 11 cooperating with the nut 10 is provided on the fixed section 5-1 of the guide tube 5, and the guide tube 5 After being inserted into the socket of the liner and rotated at a certain angle, the threaded joint 11 is screwed into the nut 10 . After the water tank 1 is filled with water, the vacuum tube 3 is under pressure, and the connection between the threaded joint 11 and the nut 10 coaxial with the jack of the liner 4 fixes the diversion tube 5 on the water tank 1, offsetting the extrusion of the vacuum tube 3 by the water pressure. Axial force, the tailstock of vacuum tube 3 is no longer subjected to axial force.

Further, the fixed section 5-1 of the guide tube 5 is a cover with a central opening, and the insertion section 5-2 of the guide tube 5 is inserted into the hole of the cover and welded and sealed. It is fixed and sealed with the outer wall of the nozzle of the vacuum tube 3 .

Further, the nozzle of the vacuum tube 3 is provided with a threaded connection section 3-1, and the cover is provided with a matching connecting thread, and the end surface of the cover in contact with the top of the threaded connection section 3-1 A gasket 9 is provided.

Further, the fixing method between the cover and the nozzle of the vacuum tube 3 is resin glue bonding. The resin glue is coated in the gap between the cover and the vacuum tube 3, and after curing, the guide tube 5 and the vacuum tube 3 are connected as a whole.

Claims (6)

1. Vacuum tube pressurized solar water heater, including closed water tank, vacuum tube, bracket, water supply pipeline and sewer pipeline. There is a guide tube between them, and the guide tube is composed of a plug-in section and a fixed section. The inner diameter of the plug-in section is 8-40 mm, and the sealing ring is used to seal between the plug-in section and the jack of the inner tank. out of the connection structure. 2. The vacuum tube pressurized solar water heater according to claim 1, characterized in that: two symmetrical baffles are arranged below the jack of the inner tank, and the baffles are welded and fixed to the outer wall of the inner tank, and the There are two stoppers on the fixed section, and the stoppers are arranged symmetrically along the diameter direction. The distance between the outermost edges of the stoppers is greater than the distance between the two baffles. The block of the section enters the gap between the baffle plate and the inner tank. 3. The vacuum tube pressurized solar water heater according to claim 1, characterized in that: a nut coaxial with the jack is arranged under the jack of the inner tank, and a nut coaxial with the jack is arranged on the fixed section of the guide tube. The threaded joint matched with the nut, after the guide tube is inserted into the socket of the inner tank and rotated at a certain angle, the threaded joint is screwed into the nut. 4. The vacuum tube pressurized solar water heater according to claim 1, characterized in that: the fixed section of the guide tube is a cover with a central hole, and the plug-in section of the guide tube is inserted into the hole of the cover The cover is fixed and sealed with the outer wall of the nozzle of the vacuum tube. 5. The vacuum tube pressurized solar water heater according to claim 4, characterized in that: the nozzle of the vacuum tube is provided with a threaded connection section, and the cover is provided with a matching connecting thread, the seal The end surface of the cover in contact with the top of the threaded connection section is provided with a sealing gasket. 6. The vacuum tube pressurized solar water heater according to claim 4, characterized in that: the fixing method of the cover and the nozzle of the vacuum tube is bonding with resin glue.