CN203203269U - Non-water-tank-bearing heat-accumulating type vacuum solar water heater - Google Patents

Abstract

The utility model discloses a pressure heat storage type vacuum solar water heater without a water tank, which comprises a plurality of pressure heat storage type glass-metal pressure-sealed vacuum solar heat collection tubes arranged in parallel, as well as a header box, a protective bracket and a tail seat. The head end of the pressure heat storage glass-metal pressure-sealed vacuum solar collector tube is fixedly connected with the header box, and the tail end is fixedly connected with the tailstock; The contact part of the tailstock; the header box is filled with insulation materials; among several pressure-bearing heat storage glass-metal pressure-sealed vacuum solar collector tubes arranged in parallel, the water inlet at the bottom is connected to the water inlet pipe, which is located at the top The water outlet at the end is connected with a water outlet pipe, and a diversion pipe is arranged between the upper and lower sides. The utility model can not only absorb solar radiation energy, but also store hot water without requiring a hot water storage tank, which can effectively save indoor space; the pressure bearing energy is far greater than that of ordinary all-glass vacuum heat collecting tubes, and the tubes are not easy to explode.

Description

A tankless pressure heat storage vacuum solar water heater

technical field

The utility model relates to a pressure heat storage vacuum solar water heater without a water tank, which belongs to the field of solar energy utilization. the

Background technique

At present, there are two kinds of all-glass vacuum solar collector tube water heaters widely used: split type and integrated type. , connected and fixed by brackets. The all-glass vacuum heat collector tube is like an elongated thermos bottle, consisting of two concentric glass tubes, the inner and outer tubes are evacuated, and the solar selective absorption surface (coating, film system) is deposited on the outer surface of the inner tube. The surface constitutes a heat absorber, which converts sunlight energy into heat energy, and heats the heat transfer fluid in the inner glass tube. The all-glass vacuum heat collecting tube adopts the design of single-end opening, which is sealed by ring-shaped inner and outer tubes at one end. The round head is supported on the round head of the cover glass tube to form a free end of thermal expansion, which can buffer the thermal stress at the opening end of the vacuum heat collecting tube during work. The structure of this vacuum heat collection tube minimizes the heat loss caused by gas convection and conduction, so it has the advantages of high heat collection efficiency, good heat preservation, and continuous operation throughout the year. But the water heater that adopts the all-glass vacuum solar collector tube also has some defects in application, wherein the most important defect has four: one, the vacuum collector tube only plays the role of absorbing solar radiation, and a hot water storage tank must be brought all the time. Store hot water. However, there is too much water in the tube, which causes the temperature of the water in the tube to rise slowly, which in turn affects the circulation of the entire system to slow down. Since the hot water in the tube cannot be completely taken out, it cannot be taken out when the tube diameter is thicker and the tube length is longer, resulting in a system failure. The heat collection efficiency is reduced. Second, the all-glass vacuum heat collecting tube has limited pressure bearing capacity. Third, the inner and outer tubes of the glass tube are all glass tubes, which are easy to explode. Its four, the silica gel ring of sealing nozzle is easy to age, easily produces water leakage phenomenon, and is unfavorable for heat preservation. the

Contents of the invention

Aiming at the above-mentioned prior art, the utility model provides a tankless pressure heat storage vacuum solar water heater, which can store hot water while absorbing heat. Pressure heat storage glass-metal pressure-sealed vacuum solar heat collector tubes are directly made into solar water heaters without the need for a heat storage tank. the

The utility model is achieved through the following technical solutions:

A tankless pressurized heat storage vacuum solar water heater, comprising several parallel pressured heat storage glass-metal pressure-sealed vacuum solar collector tubes, headers, guards and tailstocks, wherein the pressurized heat storage The head end of the glass-metal pressure-sealed vacuum solar collector tube is fixedly connected to the header box, and the tail end is fixedly connected to the tailstock; The contact part; the header box is filled with thermal insulation material; among several pressure heat storage type glass-metal pressure-sealed vacuum solar heat collectors arranged in parallel, the pressure heat storage type glass-metal pressure-sealed vacuum solar heat collector located at the bottom The water inlet is connected to the water inlet pipe, and the water outlet of the pressure-bearing heat storage glass-metal pressure-sealed vacuum solar collector tube at the uppermost end is connected to the water outlet pipe, and the pressure-bearing heat-storage glass-metal pressure seal adjacent to the upper and lower A diversion pipe is provided between the vacuum solar heat collecting tubes, which is used to connect the water inlet and outlet integrated systems of each solar heat collecting tubes, and connect each solar heat collecting tubes in series. the

The water inlet pipe is provided with a water inlet valve; the water outlet pipe is provided with a water outlet valve. the

The structure of the pressure-bearing heat storage type glass-metal fusion-sealed vacuum solar collector tube is: including an outer glass tube, a coated stainless steel inner tube, a top cover water inlet and outlet assembly, a glass flange, a pressure sealing flange, a top cover and a support The card, wherein, the outer glass tube and the coated stainless steel inner tube are both open-ended at one end, the coated stainless steel inner tube is nested in the outer glass tube, the coated stainless steel inner tube is connected to the water inlet and outlet assembly of the top cover, and passes through the glass flange in turn , The pressure-sealed flange and the top cover are connected to the nozzle of the outer glass tube, and the round head of the coated stainless steel inner tube is supported and fixed in the outer glass tube by a support card; the evaporable getter and non-evaporable getter are placed on the support card ; Vacuum is drawn between the coated stainless steel inner tube and the outer glass tube to form a vacuum interlayer; the water inlet and outlet assembly of the top cover is provided with a water inlet and a water outlet, and the water inlet is connected to the bottom of the coated stainless steel inner tube inlet pipe. the

The water inlet and outlet assembly of the top cover is a hemispherical cover made of stainless steel, and the water inlet and the water outlet are all threaded so as to connect the water inlet pipe and the water outlet pipe. the

The water inlet pipe is a stainless steel pipe. the

The outer wall of the coated stainless steel inner tube is coated with a solar selective absorption coating. the

The outer glass tube is a glass tube made of high borosilicate glass. the

The water tank pressure heat storage vacuum solar water heater of the utility model has the following beneficial effects: The water tank pressure heat storage vacuum solar water heater of the utility model can not only absorb solar radiation energy, but also store hot water without needing to store hot water The tank can effectively save indoor space; through the water inlet system with a long water inlet pipe, the water is directly fed to the bottom of the inner pipe, and the hot water is pushed out by the pressure of the water, and the water in the pipe can be completely taken out, which has higher heat collection efficiency; The pressure heat storage type glass-metal fusion sealed vacuum solar collector tube uses stainless steel as the inner tube, and the pressure bearing energy is much greater than that of ordinary all-glass vacuum collector tubes, and it is not easy to explode the tube; both the water inlet system and the water outlet system are connected by threads. The connection is convenient and tight, and there is no problem that the silicone ring is easy to age. the

Description of drawings

Figure 1: Schematic diagram of the structure of the tankless pressure heat storage vacuum solar water heater of the present invention;

Figure 2: Schematic diagram of the structure of the pressurized heat storage glass-metal fused-sealed vacuum solar collector tube;

Figure 3: An enlarged schematic diagram of the glass flange, pressure sealing flange, and top cover connection at A in Figure 2. the

Among them, 1. Evaporative getter; 2. Non-evaporable getter; 3. Support card; 4. Vacuum interlayer; 5. Coated stainless steel inner tube; 6. Outer glass tube; 7. Glass flange; 8. Compression Sealing flange; 9. Top cover; 10. Top cover water inlet and outlet assembly; 11. Water inlet; 12. Water outlet; 13. Tailstock; 14. Protector; 15. Pressure heat storage vacuum solar collector tube; 16. Header; 17. Water outlet valve; 18. Water inlet valve; 19. Diversion pipe. the

Detailed ways

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

A tankless pressurized heat storage vacuum solar water heater, comprising several parallel pressure heat storage glass-metal pressure-sealed vacuum solar collector tubes 15, a header 16, a support 14 and a tailstock 13, as shown in the figure 1, wherein, the head end of the pressure heat storage type glass-metal pressure-sealed vacuum solar heat collection tube 15 is fixedly connected with the header box 16, and the tail end is fixedly connected with the tailstock 13; Type glass-metal pressure-sealed vacuum solar collector tube 15 and the contact part of the tailstock 13; the header box 16 is filled with heat-insulating material; a number of pressure heat storage type glass-metal sealed vacuum solar collector tubes 15 arranged in parallel, The water inlet of the pressure-bearing heat storage type glass-metal pressure-sealed vacuum solar heat collector tube 15 at the bottom is connected with a water inlet pipe, and the water outlet of the pressure-bearing heat storage type glass-metal pressure-sealed vacuum solar heat collector tube 15 at the uppermost end is connected. There is a water outlet pipe connected at the upper and lower adjacent pressure-bearing thermal storage type glass-metal pressure-sealed vacuum solar collector tubes 15. There is a diversion tube 19 for connecting the inlet and outlet water integration systems of each solar collector tube. The collector tubes are connected in series. the

The water inlet pipe is provided with a water inlet valve 18; the water outlet pipe is provided with a water outlet valve 17. the

The structure of the pressure-bearing thermal storage type glass-metal fusion-sealed vacuum solar collector tube is as follows: an outer glass tube 6, a coated stainless steel inner tube 5, a top cover water inlet and outlet assembly 10, a glass flange 7, and a pressure sealing flange 8 , top cover 9 and supporting card 3, as shown in Figure 2, wherein, outer glass tube 6, coated stainless steel inner tube 5 are one-end open structure, coated stainless steel inner tube 5 is nested in the outer glass tube 6, coated stainless steel inner The nozzle of the tube 5 is connected with the water inlet and outlet assembly 10 of the top cover, and connected with the nozzle of the outer glass tube 6 through the glass flange 7, the pressure sealing flange 8 and the top cover 9 in turn, as shown in Figure 3, the coated stainless steel inner tube 5. The round head is supported and fixed in the outer glass tube 6 by the support card 3; the evaporable getter 1 and the non-evaporable getter 2 are placed on the support card 3; the coated stainless steel inner tube 5 and the outer glass tube 6 Vacuum is drawn between to form a vacuum interlayer 4; the top cover water inlet and outlet assembly 10 is provided with a water inlet 11 and a water outlet 12, and the water inlet 11 is connected with a water inlet pipe leading to the bottom of the coated stainless steel inner tube 5. the

The water inlet and outlet assembly 10 of the top cover is a hemispherical cover made of stainless steel, and the water inlet 11 and the water outlet 12 are all threaded so as to connect the water inlet pipe and the water outlet pipe. the

The water inlet pipe is a stainless steel pipe. the

The outer wall of the coated stainless steel inner tube 5 is coated with a solar selective absorbing coating. the

The outer glass tube is a glass tube made of high borosilicate glass. the

The implementation process of the pressure heat storage type glass-metal fusion sealing vacuum solar heat collecting tube is: fusing and sealing the cleaned glass flange 7 and the outer glass tube 6 . Put the round end of the outer glass tube 6 into the support card 3, on which the evaporable getter 1 and the non-evaporable getter 2 are installed. Put the coated stainless steel inner tube 5 into the outer glass tube 6, and support and position it through the support card 3. Connect the cleaned sealing flange 8 and the top cover 9 with the nozzle of the outer glass tube 6, and connect the sealing flange 8 and the glass flange 7 by means of hot pressing to complete the coating stainless steel inner tube 5 and the outer tube. The mouth of the glass tube 6 is tightly connected. The outer glass tube head is left with a tail pipe with a hole for vacuuming, and then sealed off. the

The water tank pressure heat storage vacuum solar water heater of the utility model can not only absorb solar radiation energy, but also store hot water without requiring a hot water storage tank, which can effectively save indoor space; directly through the water inlet system with long water inlet pipes The water enters the bottom of the inner tube, and the hot water is pushed out by the pressure of the water. The water in the tube can be completely taken out, which has higher heat collection efficiency; the pressure heat storage type glass-metal fusion-sealed vacuum solar heat collection tube is made of stainless steel. The pressure energy of the tube is much greater than that of ordinary all-glass vacuum heat collecting tubes, and it is not easy to explode the tubes; the water inlet system and the water outlet system are connected by threads, which are convenient and tight, and there is no problem that the silicone ring is easy to age. the

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model. the

Claims (6)

1. A tankless pressurized thermal storage vacuum solar water heater, characterized in that: it comprises several parallel-arranged pressurized thermal storage type glass-metal pressure-sealed vacuum solar collector tubes, as well as headers, guards and tailstocks, Among them, the head end of the pressure heat storage type glass-metal pressure-sealed vacuum solar collector tube is fixedly connected to the header box, and the tail end is fixedly connected to the tailstock; The contact part between the heat collecting tube and the tailstock; the header box is filled with thermal insulation material; among several pressure heat storage glass-metal pressure-sealed vacuum solar heat collector tubes arranged in parallel, the pressure heat storage glass-metal at the bottom is The water inlet of the pressure-sealed vacuum solar heat collector tube is connected with a water inlet pipe, and the water outlet of the pressure-bearing heat storage type glass-metal pressure-sealed vacuum solar heat collector tube at the uppermost end is connected with a water outlet pipe, and the upper and lower adjacent pressure heat storage There is a guide tube between the glass-metal pressure-sealed vacuum solar collector tubes. 2. A tankless pressure heat storage vacuum solar water heater according to claim 1, characterized in that: said water inlet pipe is provided with a water inlet valve; said water outlet pipe is provided with a water outlet valve. 3. A tankless pressure heat storage vacuum solar water heater according to claim 1, characterized in that: the structure of the pressure heat storage type glass-metal fusion sealed vacuum solar heat collection tube is: comprising an outer glass tube , coated stainless steel inner tube, water inlet and outlet assembly of the top cover, glass flange, pressure sealing flange, top cover and support card, among which, the outer glass tube and the coated stainless steel inner tube are all open-end structures, and the coated stainless steel inner tube is embedded Set in the outer glass tube, the nozzle of the coated stainless steel inner tube is connected with the water inlet and outlet assembly of the top cover, and connected with the nozzle of the outer glass tube through the glass flange, the pressure sealing flange and the top cover in turn, and the round head of the coated stainless steel inner tube passes through the support The card is supported and fixed in the outer glass tube; an evaporable getter and a non-evaporable getter are placed on the support card; a vacuum is drawn between the coated stainless steel inner tube and the outer glass tube to form a vacuum interlayer; the top cover The water inlet and outlet assembly is provided with a water inlet and a water outlet, and the water inlet is connected with a water inlet pipe leading to the bottom of the coated stainless steel inner pipe. 4. A tankless pressure heat storage vacuum solar water heater according to claim 1, characterized in that: the water inlet and outlet assembly of the top cover is a hemispherical cover made of stainless steel, and the water inlet and outlet are equipped with thread. 5. A tankless pressure heat storage vacuum solar water heater according to claim 1, characterized in that: the water inlet pipe is a stainless steel pipe. 6. A tankless pressure heat storage vacuum solar water heater according to claim 1, characterized in that: the outer wall of the coated stainless steel inner tube is coated with a solar selective absorbing coating.

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