CN212320104U

CN212320104U - Indirect solar water heating system

Info

Publication number: CN212320104U
Application number: CN202022385814.5U
Authority: CN
Inventors: 王凯
Original assignee: Nanjing Lishui Zhenyu Electrical Appliance Co Ltd
Current assignee: Nanjing Lishui Zhenyu Electrical Appliance Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-01-08
Anticipated expiration: 2030-10-23

Abstract

The utility model discloses an indirect solar water heating system, which comprises a water tank, a support, a flat-plate solar heat collector fixed on the support, a water inlet pipeline, a water outlet pipeline and a copper heat pipe, wherein a closed inner container is arranged in a water tank shell, a row of upper jacks are arranged on the upper part of the inner container, a row of lower jacks which are coaxial with the upper jacks are arranged on the lower part of the inner container, the flat-plate solar heat collector comprises a shell, a glass cover plate, a heat absorbing body and a heat insulating body arranged between the heat absorbing body and the shell, the heat absorbing body comprises an upper collecting pipe, a lower collecting pipe, a pipe bank and a heat absorbing plate, a plurality of sleeves which vertically penetrate through the upper collecting pipe and correspond to the lower jacks are arranged on the upper collecting pipe, an evaporation section of the copper heat pipe is inserted into the sleeves, and a condensation section of the copper heat pipe, freezing resistance, impact resistance, comfortable bath and good application prospect.

Description

Indirect solar water heating system

Technical Field

The utility model relates to a solar energy utilization field, especially a closed solar water heater.

Background

Most of the existing residential buildings are vacuum tube type direct solar water heaters, which have the characteristics of no indoor space occupation and excellent thermal performance, but the water outlet pressure depends on the drop of floors, and in the opposite two floors, a booster pump needs to be arranged to prevent the water outlet pressure from being too low, so that when a vacuum tube is accidentally damaged, the water heater cannot be used, and the valves of a water feeding pipeline and a water discharging pipeline need to be closed for maintenance. The flat plate solar heat collector is more and more applied to a balcony split type solar water heating system of a high-rise building, and has the characteristics of impact resistance, attractive appearance and easiness in building integration. The balcony split type solar water heating system has the characteristics of large water outlet pressure and frost resistance, but the system is of a split type structure, the water tank occupies an indoor space, a pipeline for connecting the water tank with the heat collector is long, a balcony wall body needs to be embedded with a steel sleeve, the installation inclination angle of the heat collector is limited, the heat gain of the system is low, and the thermal performance is poor.

In conclusion, how to integrate the advantages of the vacuum tube type direct solar water heater and the flat-plate type solar heat collector and design an indirect solar water heating system which has a compact structure, good system thermal performance and large water outlet pressure and is resistant to freezing becomes a problem to be solved urgently in the industry.

Disclosure of Invention

The utility model aims to solve the technical problem that to the not enough of above-mentioned prior art, provide an indirect solar water heating system of compact structure, shock-resistant, freeze proof, system thermal property well and play water pressure-bearing.

In order to solve the technical problem, the utility model discloses the technical scheme who takes does: the flat-plate solar collector comprises a water tank, a support, a flat-plate solar collector fixed on the support, a water inlet pipeline, a water outlet pipeline and a copper heat pipe, wherein a closed inner container is arranged in a shell of the water tank, a row of upper jacks are arranged at the upper part of the inner container, a row of lower jacks which are coaxial with the upper jacks are arranged at the lower part of the inner container, the flat-plate solar collector comprises a shell, a glass cover plate, a heat absorbing body and a heat insulating body arranged between the heat absorbing body and the shell, the heat absorbing body comprises an upper collecting pipe, a lower collecting pipe, a pipe array and a heat absorbing plate, the upper collecting pipe and the lower collecting pipe are arranged in parallel, the pipe array is vertically welded and communicated with the upper collecting pipe and the lower collecting pipe, the heat absorbing plate is welded on the pipe array, one end of the upper collecting pipe is provided with a liquid inlet, a plurality of, the upper end opening faces the lower insertion hole, the shell is provided with insertion holes corresponding to the sleeve, the evaporation section of the copper heat pipe is inserted into the sleeve, the condensation section of the copper heat pipe penetrates through the lower insertion hole and the upper insertion hole and extends out of the inner container, and the copper heat pipe, the upper insertion hole and the lower insertion hole are sealed through sealing rings. The medium is injected into the heat absorber, and the heat absorbed by the heat absorbing plate is transferred to the calandria and then to the sleeve, and the heat is transferred to the condensation section through the action of the copper heat pipe, so that the water in the inner container is heated.

Preferably, the other end of the upper header is provided with an exhaust port, and the liquid inlet is connected with an expansion tank. The exhaust port is used for exhausting in the medium injection process, and the expansion tank is used for absorbing the expansion of the medium and preventing the pressure from being too high.

Preferably, the heat absorption body further comprises a return pipe, the return pipe is arranged on one side or two sides of the heat absorption body, and the return pipe is communicated with the upper collecting pipe and the lower collecting pipe in a welding mode. The reflux pipe is not provided with a heat absorbing plate or a selective absorbing coating.

The utility model has the advantages that:

1. the inner container is closed, the water outlet pressure is close to the water supply pressure of tap water, the bathing is comfortable, the water loop and the heat loop are separated, and the water quality is clean;

2. the sleeve is used for heat exchange between the heat absorbing body and the water tank, the condensation section of the copper heat pipe is directly contacted with water, the heat resistance is small, the temperature rise is fast, two heat transfer modes of convection and conduction are provided, the heat exchange is efficient, the copper heat pipe directly transfers the heat absorbed by the flat-plate solar collector into the water tank, a connecting pipeline is omitted, the structure is compact, and the cost is saved;

3. the back flow sets up in one side or both sides of the heat-absorbing body, and the calandria temperature is higher for the absorbed heat transfer of absorber plate, and the part that the back flow corresponds does not have the absorber plate, and the temperature is lower, has increaseed the effect of thermosyphon, has promoted the natural circulation's of the internal medium of heat-absorbing body efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the indirect solar water heating system of the present invention.

Fig. 2 is a schematic structural view of the flat plate type solar heat collector of the indirect solar water heating system of the present invention.

In the figure, 1: a water tank; 2: a support; 3: a flat plate type solar heat collector; 4: a copper heat pipe; 5: an expansion tank; 101: an inner container; 102: a lower jack; 103: an upper jack; 301: a housing; 302: a glass cover plate; 303: a liquid inlet; 304: an upper header; 305: arranging pipes; 306: a return pipe; 307: a lower header; 308: a heat absorbing plate; 309: a sleeve; 310: and (7) an exhaust port.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the indirect solar water heating system comprises a water tank 1, a support 2, a flat plate type solar heat collector 3 fixed on the support 2, a water inlet pipeline and a water outlet pipeline, and further comprises a copper heat pipe 4, wherein a row of upper jacks 103 is arranged at the upper part of the inner container 101, a row of lower jacks 102 coaxial with the upper jacks 103 are arranged at the lower part of the inner container 101, the flat plate type solar heat collector 3 comprises a shell 301, a glass cover plate 303, a heat absorber and a heat insulator arranged between the heat absorber and the shell 301, the heat absorber comprises an upper header 304, a lower header 307, a drain pipe 305 and a heat absorbing plate 308, the upper header 304 and the lower header 307 are arranged in parallel, the drain pipe 305 is vertically welded and communicated with the upper header 304 and the lower header 307, the heat absorbing plate 308 is welded on the drain pipe 305, one end of the upper header 304 is provided with a liquid inlet 303, a plurality of sleeves 309 vertically penetrating through the upper header, the sleeve 309 is not communicated with the upper header 304, the lower end of the sleeve 309 is reduced, the upper end of the sleeve 309 faces the lower jack 103, the shell 301 is provided with jacks corresponding to the sleeve 309, the evaporation section of the copper heat pipe 4 is inserted into the sleeve 309, the condensation section of the copper heat pipe 4 penetrates through the lower jack 102 and the upper jack 103 and extends out of the liner 101, and the space between the copper heat pipe 4 and the upper jack 103 and the lower jack 102 is sealed through a sealing ring. The medium is injected into the heat absorber, and the heat absorbed by the heat absorbing plate 308 is transferred to the calandria 305 and further to the sleeve 309, and the heat is transferred to the condensation section through the action of the copper heat pipe 4, so as to heat the water in the inner container 101.

Further, the other end of the upper header 304 is provided with an exhaust port 310, and the inlet port 303 is connected with an expansion tank 5. The vent 310 is used for venting during medium injection and the expansion tank 5 is used to absorb expansion of the medium and prevent over-pressurization.

Further, the heat absorption body further comprises a return pipe 306, the return pipe 306 is arranged on one side or two sides of the heat absorption body, and the return pipe 306 is in welding communication with the upper collecting pipe 304 and the lower collecting pipe 307. The return tube 306 is not provided with a heat sink 308 or a selective absorption coating. When the heat collecting operation is performed, after the medium of the discharge pipe 305 absorbs heat, the temperature rises, the medium enters the upper collecting pipe 304, sinks after heat exchange in the upper collecting pipe 304, flows back to the lower collecting pipe 307 through the return pipe 306, and the circulation is repeated.

Claims

1. Indirect solar water heating system, including water tank, support, be fixed in flat plate type solar collector, water intake pipe and the outlet conduit on the support, characterized by: the flat-plate solar collector comprises a shell, a glass cover plate, a heat absorber and a heat insulator, wherein the heat absorber is arranged between the heat absorber and the shell, the heat absorber comprises an upper collecting pipe, a lower collecting pipe, a calandria and a heat absorbing plate, the upper collecting pipe and the lower collecting pipe are arranged in parallel, the calandria is vertically welded and communicated with the upper collecting pipe and the lower collecting pipe, the heat absorbing plate is welded on the calandria, one end of the upper collecting pipe is provided with a liquid inlet, a plurality of sleeves vertically penetrating the upper collecting pipe and corresponding to the lower jacks are arranged on a pipe section of the upper collecting pipe, the sleeves are not communicated with the upper collecting pipe, the lower end of each sleeve is contracted, the upper end of each sleeve faces the lower jack, the shell is provided with jacks corresponding to the sleeves, and an evaporation section of the copper heat pipe is inserted into the sleeves, the condensation section of the copper heat pipe penetrates through the lower jack and the upper jack and extends out of the inner container, and the copper heat pipe, the upper jack and the lower jack are sealed through sealing rings.

2. An indirect solar water heating system as claimed in claim 1, wherein: the other end of the upper collecting pipe is provided with an air outlet, and the liquid inlet is connected with an expansion tank.

3. An indirect solar water heating system as claimed in claim 1, wherein: the heat absorption body further comprises a return pipe, the return pipe is arranged on one side or two sides of the heat absorption body, and the return pipe is communicated with the upper collecting pipe and the lower collecting pipe in a welding mode.