CN108895677A - Phase-change heat collection and energy storage integrated solar water heater - Google Patents

Abstract

The present invention relates to a solar water heater, in particular to a phase-change heat collection and energy storage integrated solar water heater. An inner shell is provided with an inner tank coaxially arranged therewith, a heat exchange coil is provided in the inner tank, and a phase-change material storage part is also provided in the inner tank. A cavity is formed between the outer shell and the inner tank, a part of the cavity is filled with a thermal insulation layer, and the other part of the cavity is a greenhouse; a window is provided on one side of the outer shell, a light-transmitting cover is installed on the window, and the light-transmitting cover and the greenhouse are located on the same side; a hot water outlet pipe is installed on the upper part of one side of the outer shell, and a cold water inlet pipe is installed on the lower part of the same side, one end of the heat exchange coil is connected to the hot water outlet pipe, and the other end of the heat exchange coil is connected to the cold water inlet pipe. The present invention has a simple and compact structure, combines solar energy with phase change materials, and uses phase change materials to store heat collected by solar energy. It is small and exquisite, and has good promotion value.

Description

A phase-change solar water heater integrating heat collection and energy storage

technical field

The invention relates to a solar water heater, in particular to a phase change solar water heater integrating heat collection and energy storage.

Background technique

Solar energy is an inexhaustible and inexhaustible renewable clean energy. At present, solar energy has been used in electricity, heating, etc. The use of solar energy can save a lot of fossil energy and reduce environmental pollution caused by energy use. . The technology of using solar energy to obtain medium and high temperature hot water required for life and heating has matured, but solar energy has a fatal weakness in life and heating utilization, that is, it is an intermittent energy source, and solar radiation is affected by day and night, seasons and The influence of rain and snow weather factors is manifested as discontinuity and instability.

In addition, traditional solar water heaters include heat collectors, water storage tanks and various components to form a complete hot water system, and the system is relatively complicated. The heat collector is a device that absorbs solar radiation energy and transfers heat to the working medium. At present, the heat collector used for heating water generally uses the water storage tank to be connected with the medium circulation pipe on the heat collector to make the collector The heater heats the medium in the medium circulation pipe, and then drains the heated medium to the medium layer in the water storage tank, so that the heat medium heats the water in the water storage tank. This heating method must use a water storage tank and a medium circulation pipe, and for users who use this type of water heater, the installation of the water storage tank will occupy a certain amount of indoor space; in addition, the heat collector is installed outdoors through a fixed bracket, and the water storage tank Installed indoors, the two are connected through circulation pipes, which is easy to cause heat loss and low thermal efficiency.

Contents of the invention

The object of the present invention is to provide a phase-change integrated solar water heater with heat collection and energy storage, which has a simple and compact structure, combines solar energy with phase-change materials, uses phase-change materials to store the heat collected by solar energy, and ensures Hot water can be used when there is enough water, and the heat storage capacity of the same volume is more than three times that of traditional water tanks. It is small in size and high in energy, and hot water can be used immediately; Components such as heaters are small and exquisite, and have good promotion value.

In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:

A solar water heater integrated with phase change heat collection and energy storage includes an insulation layer, a hot water outlet pipe, a casing, a light-transmitting cover plate, a phase change material storage part, a heat exchange coil, an inner tank, a cold water inlet pipe, and a greenhouse. There is an inner tank coaxially arranged inside the inner tank, and a heat exchange coil is arranged in the inner tank, wherein the heat exchange coil can be a copper tube. There is also a phase change material storage part in the inner tank, and the phase change material storage part is provided with a phase change material. At present, the phase change material is generally divided into organic, inorganic and mixed types, and there are no detailed restrictions. The specific selection can be Economical comparison and selection based on market prices. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil to heat the water. The heat exchange coil transfers the heat in the phase change material to the water. Cold water enters and hot water exits. The hot water can be used immediately, and the water is comfortable under pressure. A cavity is formed between the outer shell and the inner tank, and a part of the cavity is filled with an insulating layer, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is a greenhouse, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. A window is opened on one side of the casing, and a light-transmitting cover is installed on the window, and the light-transmitting cover is located on the same side as the greenhouse; the light-transmitting cover is located on the sunny side to receive sunlight. A hot water outlet pipe is installed on the upper part of one side of the housing, and a cold water inlet pipe is installed on the lower part of the same side. One end of the heat exchange coil is connected to the hot water outlet pipe, and the other end of the heat exchange coil is connected to the cold water outlet pipe. The water inlet pipe is connected. The cold water inlet pipe is connected to the cold water end, and the hot water outlet pipe is connected to the user's hot water pipe network.

In the aforementioned phase-change integrated solar water heater with heat collection and energy storage, a heat absorbing layer is provided at the contact between the inner tank and the greenhouse.

In the aforementioned phase-change integrated solar water heater with heat collection and energy storage, the surface of the liner is deposited by physical vapor phase, and the specific process can be magnetron sputtering coated with a heat-absorbing layer, and the heat-absorbing layer is a solar selective absorption coating. Floor. The phase change material is stored inside the liner, and the heat absorbing layer on its outer surface absorbs solar energy and exchanges heat with the phase change material, so that the phase change material can store energy in real time.

The aforesaid integrated solar water heater with phase change heat collection and energy storage also includes a casing head and a phase change material injection port, the two ends of the casing are sealed with casing heads, and the top side of the casing is provided with a phase change material injection port, The phase change material injection port communicates with the phase change material storage part.

The aforesaid integrated solar water heater with phase-change heat collection and energy storage also includes fixing screws and cover bead. The fixing screws are used for fixing and connecting the shell, the light-transmitting cover plate and the cover plate pressing strip.

The aforesaid phase-change integrated solar water heater with heat collection and energy storage also includes a fixing belt and a hanger. The ends of the fixing belts are all fixedly connected with the hangers. The fixing belt can be a narrow steel belt, which surrounds the inner tank and is fixed together with the hanger, so as to play a good load-bearing role. The invention can be placed vertically on the sunny side of the building, or can be fixed on the balcony railing or the outer wall at a certain angle through the hanger, without the need for additional components such as water storage tanks and traditional heat collectors, and is small and exquisite.

The aforesaid integrated solar water heater with phase-change heat collection and energy storage also includes a greenhouse seal, and a greenhouse seal is provided between the thermal insulation layer and the greenhouse.

In the aforementioned phase-change integrated solar water heater with heat collection and energy storage, an exhaust port is also provided on the top side of the casing, and the exhaust port is also connected to the storage part of the phase-change material. When the phase change material is injected into the phase change material storage part, the gas is exhausted through the exhaust port to ensure that the pressure in the inner tank is stable, and it is sealed after the material injection is completed.

In the aforementioned phase-change integrated solar water heater with heat collection and energy storage, a pressure relief valve is also installed on the exhaust port. Real-time pressure relief to ensure system stability.

In the aforementioned phase-change integrated solar water heater with heat collection and energy storage, the lateral section of the housing is elliptical, and the light-transmitting cover plate is a plastic solar panel or a toughened glass plate. The irradiation angle of sunlight changes throughout the day, and the structural arrangement of the lateral section of the shell can better absorb sunlight from multiple angles and maximize heat absorption efficiency.

Compared with the prior art, the benefits of the present invention are:

1. The present invention fills the inner tank with phase change material, embeds the heat exchange coil in the phase change material, and utilizes the advantages of high heat enthalpy and high energy storage density of the phase change material to store heat energy in the phase change material Among them, when the user is not in use, there is no water flow inside the invention, and the solar radiation energy is converted into heat energy and stored in the phase change material; when the user is in use, the cold water exchanges heat with the phase change material through the heat exchange coil to replace the The heat stored in the phase change material, using the phase change latent heat of the phase change material to realize energy storage and utilization;

2. The structure of the present invention is simple and compact. It combines solar energy with phase change materials, and uses phase change materials to store the heat collected by solar energy, which ensures that hot water can be used when solar energy is insufficient, and solves the problem of existing simple solar heating. Lead to the problem of low heat storage performance;

3. Compared with traditional solar water heaters, the heat storage capacity of the same volume is more than three times that of traditional water tanks. It is small in size, high in energy storage density, high in energy, and hot water can be used immediately;

4. It also provides a good solution for the integration of solar water heaters and buildings. The water heater can not only be perfectly combined with the balcony railings, but also can be placed on the roof or hung on the wall arbitrarily, without additional water storage tanks and Traditional heat collectors and other components are small and exquisite, and have good promotion value.

Description of drawings

Fig. 1 is a schematic diagram of the external structure of the present invention;

Fig. 2 is a transverse sectional view of the present invention;

Fig. 3 is a longitudinal sectional view of the present invention.

Meanings of reference signs: 1-shell head, 2-fixing screw, 3-phase change material injection port, 4-exhaust port, 5-insulation layer, 6-hot water outlet pipe, 7-shell, 8-greenhouse Seal, 9-translucent cover plate, 10-phase change material storage part, 11-heat exchange coil, 12-inner liner, 13-fixing belt, 14-cover bead, 15-cold water inlet pipe, 16-hanger , 17 - Greenhouse.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Detailed ways

Embodiment 1 of the present invention: as shown in Figures 1-3, a phase-change integrated solar water heater for heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase-change material Storage part 10, heat exchange coil 11, liner 12, cold water inlet pipe 15 and greenhouse 17, inner liner 12 arranged coaxially with it is provided inside the shell 7, and heat exchange unit 12 is arranged inside the liner 12 The coiled tube 11, wherein the heat exchange coiled tube 11 may be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. A heat absorbing layer 18 is provided at the contact between the liner 12 and the greenhouse 17 . The surface of the liner 12 is coated with a heat absorbing layer 18 by physical vapor deposition, and the specific process may be magnetron sputtering, and the heat absorbing layer 18 is a solar selective absorbing coating. The inner tank 12 stores phase-change materials, and the heat-absorbing layer 18 on its outer surface absorbs solar energy and transfers heat to the phase-change materials, so that the phase-change materials can store energy in real time.

The integrated solar water heater also includes a casing head 1 and a phase-change material injection port 3, the two ends of the casing 7 are sealed with a casing head 1, and the top side of the casing 7 is provided with a phase-change material injection port 3. The phase change material injection port 3 communicates with the phase change material storage part 10 . The integrated solar water heater also includes a fixing screw 2 and a cover bead 14 , the surrounding of the transparent cover 9 is fixed with the shell 7 via the cover bead 14 , and the cover bead 14 is also provided with a fixing screw 2 . The fixing screws are used for fixing and connecting the housing 7 , the light-transmitting cover 9 and the cover bead 14 . The integrated solar water heater also includes a fixing belt 13 and a hanger 16. The outer shell 7 is fixed with a hanger 16 on the side away from the light-transmitting cover plate 9, and the outer circumference of the inner tank 12 is also provided with a fixing belt 13. The ends of the belt 13 are all fixedly connected with the hanger 16 . The fixing belt 13 wherein can be a narrow strip steel belt, surrounds the liner 13 and is fixed together with the hanger 16 to play a good load-bearing role. The present invention can be placed vertically on the sunny side of the building, and can also be fixed on the balcony railing or the outer wall at a certain angle through the hanger 16. It does not require additional components such as water storage tanks and traditional heat collectors, and is small and exquisite. The integrated solar water heater also includes a greenhouse seal 8, and a greenhouse seal 8 is arranged between the heat insulation layer 5 and the greenhouse 17. The top side of the housing 7 is also provided with an exhaust port 4 , and the exhaust port 4 is also communicated with the phase change material storage part 10 . When the phase change material is injected into the phase change material storage part 10, the gas is exhausted through the exhaust port 4 to ensure that the pressure in the inner tank 12 is stable, and it is sealed after the injection is completed. A pressure relief valve is also installed on the exhaust port 4 . Real-time pressure relief to ensure system stability.

Specifically, the lateral section of the housing 7 is elliptical, and the light-transmitting cover 9 is a plastic solar panel or a tempered glass panel. The irradiation angle of sunlight changes all the time throughout the day, and the structural arrangement of the lateral section of the housing 7 can better absorb sunlight from multiple angles and maximize heat absorption efficiency.

Embodiment 2: As shown in Figures 1-3, a phase-change integrated solar water heater with heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase-change material storage part 10 , a heat exchange coil 11, an inner tank 12, a cold water inlet pipe 15 and a greenhouse 17, the inside of the outer shell 7 is provided with an inner tank 12 arranged coaxially therewith, and the inner tank 12 is provided with a heat exchange coil 11 , wherein the heat exchange coil 11 can be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. A heat absorbing layer 18 is provided at the contact between the liner 12 and the greenhouse 17 . The surface of the liner 12 is deposited by physical vapor deposition, and the specific process can be magnetron sputtering. Coated with a heat absorbing layer 18 which is a solar selective absorbing coating. The inner tank 12 stores phase-change materials, and the heat-absorbing layer 18 on its outer surface absorbs solar energy and transfers heat to the phase-change materials, so that the phase-change materials can store energy in real time.

Embodiment 3: As shown in Figures 1-3, a phase-change solar water heater with heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase-change material storage part 10 , a heat exchange coil 11, an inner tank 12, a cold water inlet pipe 15 and a greenhouse 17, the inside of the outer shell 7 is provided with an inner tank 12 arranged coaxially therewith, and the inner tank 12 is provided with a heat exchange coil 11 , wherein the heat exchange coil 11 can be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. The integrated solar water heater also includes a casing head 1 and a phase-change material injection port 3, the two ends of the casing 7 are sealed with a casing head 1, and the top side of the casing 7 is provided with a phase-change material injection port 3. The phase change material injection port 3 communicates with the phase change material storage part 10 .

Embodiment 4: As shown in Figures 1-3, a phase change solar water heater with heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase change material storage part 10 , a heat exchange coil 11, an inner tank 12, a cold water inlet pipe 15 and a greenhouse 17, the inside of the outer shell 7 is provided with an inner tank 12 arranged coaxially therewith, and the inner tank 12 is provided with a heat exchange coil 11 , wherein the heat exchange coil 11 can be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when using water, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. The integrated solar water heater also includes a fixing screw 2 and a cover bead 14 , the surrounding of the transparent cover 9 is fixed with the shell 7 via the cover bead 14 , and the cover bead 14 is also provided with a fixing screw 2 . The fixing screws are used for fixedly connecting the housing 7 , the light-transmitting cover 9 and the cover bead 14 .

Embodiment 5: As shown in Figures 1-3, a phase-change solar water heater with integrated heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase-change material storage part 10 , a heat exchange coil 11, an inner tank 12, a cold water inlet pipe 15 and a greenhouse 17, the inside of the outer shell 7 is provided with an inner tank 12 arranged coaxially therewith, and the inner tank 12 is provided with a heat exchange coil 11 , wherein the heat exchange coil 11 can be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. The integrated solar water heater also includes a fixing belt 13 and a hanger 16. The outer shell 7 is fixed with a hanger 16 on the side away from the light-transmitting cover plate 9, and the outer circumference of the inner tank 12 is also provided with a fixing belt 13. The ends of the belt 13 are all fixedly connected with the hanger 16 . The fixing belt 13 wherein can be a narrow strip steel belt, surrounds the liner 13 and is fixed together with the hanger 16 to play a good load-bearing role. The present invention can be placed vertically on the sunny side of the building, and can also be fixed on the balcony railing or the outer wall at a certain angle through the hanger 16. It does not require additional components such as water storage tanks and traditional heat collectors, and is small and exquisite.

Embodiment 6: As shown in Figures 1-3, a phase-change solar water heater with heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase-change material storage part 10 , a heat exchange coil 11, an inner tank 12, a cold water inlet pipe 15 and a greenhouse 17, the inside of the outer shell 7 is provided with an inner tank 12 arranged coaxially therewith, and the inner tank 12 is provided with a heat exchange coil 11 , wherein the heat exchange coil 11 can be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. The solar water heater integrated with phase change heat collection and energy storage also includes a greenhouse seal 8 , and a greenhouse seal 8 is provided between the thermal insulation layer 5 and the greenhouse 17 .

Embodiment 7: As shown in Figures 1-3, a phase-change solar water heater with heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase-change material storage part 10 , a heat exchange coil 11, an inner tank 12, a cold water inlet pipe 15 and a greenhouse 17, the inside of the outer shell 7 is provided with an inner tank 12 arranged coaxially therewith, and the inner tank 12 is provided with a heat exchange coil 11 , wherein the heat exchange coil 11 can be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. The top side of the housing 7 is also provided with an exhaust port 4 , and the exhaust port 4 is also communicated with the phase change material storage part 10 . When the phase change material is injected into the phase change material storage part 10, the gas is exhausted through the exhaust port 4 to ensure that the pressure in the inner tank 12 is stable, and it is sealed after the injection is completed. A pressure relief valve is also installed on the exhaust port 4 . Real-time pressure relief to ensure system stability.

Embodiment 8: As shown in Figures 1-3, a phase-change solar water heater with heat collection and energy storage includes an insulation layer 5, a hot water outlet pipe 6, a casing 7, a light-transmitting cover plate 9, and a phase-change material storage part 10 , a heat exchange coil 11, an inner tank 12, a cold water inlet pipe 15 and a greenhouse 17, the inside of the outer shell 7 is provided with an inner tank 12 arranged coaxially therewith, and the inner tank 12 is provided with a heat exchange coil 11 , wherein the heat exchange coil 11 can be a copper tube. The inner tank 12 is also provided with a phase-change material storage part 10, and the phase-change material storage part 10 is provided with a phase-change material. At present, the phase-change materials are generally divided into organic, inorganic and mixed types, and no detailed restrictions are made. The specific selection can be made according to the market price for economical comparison. The phase change material absorbs the heat of solar energy to store heat and energy, and when water is used, the phase change latent heat exchanges heat with the water in the heat exchange coil 11 to heat the water. The heat exchange coil 11 exchanges the heat in the phase change material into water, cold water enters and hot water exits, the hot water can be used immediately, and the water is comfortable for pressure operation. A cavity is formed between the outer shell 7 and the inner tank 12, and a part of the cavity is filled with the insulation layer 5, which has a good thermal insulation effect and prevents heat loss. The other part of the cavity is the greenhouse 17, which forms a relatively sealed greenhouse for heat preservation, and forms a greenhouse effect to better prevent heat loss. One side of the housing 7 is provided with a window, and a light-transmitting cover plate 9 is installed on the window, and the light-transmitting cover plate 9 and the greenhouse 17 are located on the same side; the light-transmitting cover plate 9 is located on the sunny side and receives sunlight. . A hot water outlet pipe 6 is installed on the upper part of one side of the housing 7, and a cold water inlet pipe 15 is installed on the lower part of the same side, and one end of the heat exchange coil 11 communicates with the hot water outlet pipe 6, and the heat exchange coil The other end of 11 communicates with cold water inlet pipe 15. Wherein the cold water inlet pipe 15 is connected to the cold water end, and the hot water outlet pipe 6 is connected to the user's hot water pipe network. The transverse section of the housing 7 is elliptical, and the light-transmitting cover 9 is a plastic solar panel or a tempered glass panel. The irradiation angle of sunlight changes all the time throughout the day, and the structural arrangement of the lateral section of the housing 7 can better absorb sunlight from multiple angles and maximize heat absorption efficiency.

The working principle of the present invention: the phase change material has the ability to change its physical state within a certain temperature range: taking the solid-liquid phase change as an example, when heated to the melting temperature, it will produce a phase change from solid to liquid, and the melted During the process, the phase change material absorbs and stores a large amount of latent heat; when the phase change material cools down, the stored heat will be dissipated to the environment within a certain temperature range, and a reverse phase change from liquid to solid is carried out: in the two During the phase change process, the energy stored or released is called the latent heat of phase change; when the physical state changes, the temperature of the material itself remains almost unchanged before the phase change is completed, forming a wide temperature platform. When working, during the daytime, solar energy shines on the heat absorbing layer 18 through the light-transmitting cover plate 9, and the heat absorbing layer 18 receives the light, and the solar energy is transmitted to the phase change material in the phase change material storage part 10, and passes through the inner tank 12. Fill the phase change material, and bury the heat exchange coil 11 in the phase change material, take advantage of the advantages of high enthalpy value and high energy storage density of the phase change material, store heat energy in the phase change material, when the user does not use it, There is no water flow inside the present invention, and the solar radiation energy is converted into thermal energy and stored in the phase change material; when the user uses it, the cold water passes through the heat exchange coil 11 to exchange heat with the phase change material to replace the heat stored in the phase change material , using the phase change latent heat of phase change materials to realize energy storage and utilization.

Claims (10)

1. A phase-change integrated solar water heater for heat collection and energy storage, characterized in that it includes an insulation layer (5), a hot water outlet pipe (6), a casing (7), a light-transmitting cover plate (9), and a phase-change material storage part (10), heat exchange coil (11), liner (12), cold water inlet pipe (15) and greenhouse (17), the inside of the shell (7) is provided with a liner ( 12), the inner tank (12) is provided with a heat exchange coil (11), and the inner tank (12) is also provided with a phase change material storage part (10), and the outer shell (7) and the inner tank A cavity is formed between (12), a part of the cavity is filled with an insulating layer (5), and the other part of the cavity is a greenhouse (17); one side of the shell (7) is provided with a window, so A light-transmitting cover plate (9) is installed on the window, and the light-transmitting cover plate (9) and the greenhouse (17) are located on the same side; a hot water outlet pipe (6) is installed on the upper part of one side of the shell (7) , the lower part of the same side is equipped with a cold water inlet pipe (15), one end of the heat exchange coil (11) communicates with the hot water outlet pipe (6), and the other end of the heat exchange coil (11) communicates with the cold water inlet Water pipe (15) is connected. 2. The solar water heater integrated with phase change heat collection and energy storage according to claim 1, characterized in that a heat absorbing layer (18) is provided at the contact between the inner tank (12) and the greenhouse (17). 3. The solar water heater integrated with phase-change heat collection and energy storage according to claim 2, characterized in that, the surface of the inner tank (12) is coated with a heat-absorbing layer (18) by physical vapor deposition, and the heat-absorbing layer (18) Layer (18) is a solar selective absorbing coating. 4. The integrated solar water heater with phase-change heat collection and energy storage according to claim 1, characterized in that, it also includes a casing head (1) and a phase-change material injection port (3), and the two ends of the casing (7) The shell head (1) is sealed, and the top side of the shell (7) is provided with a phase change material injection port (3), and the phase change material injection port (3) communicates with the phase change material storage part (10) . 5. The solar water heater integrated with phase change heat collection and energy storage according to claim 1, characterized in that it also includes fixing screws (2) and cover plate bead (14), and the surrounding of the transparent cover plate (9) is The cover bead (14) is fixed with the shell (7), and the cover bead (14) is also provided with fixing screws (2). 6. The integrated solar water heater with phase change heat collection and energy storage according to claim 1, characterized in that it also includes a fixing belt (13) and a hanger (16), and the outer shell (7) is far away from the transparent cover plate (9 ) is fixed with a hanger (16), the outer circumference of the inner container (12) is also wound with a fixing belt (13), and the ends of the fixing belt (13) are fixedly connected with the hanger (16) . 7. The integrated solar water heater with phase-change heat collection and energy storage according to claim 1, characterized in that, it also includes a greenhouse seal (8), and a greenhouse seal (8) is provided between the thermal insulation layer (5) and the greenhouse (17). 8). 8. The solar water heater integrated with phase-change heat collection and energy storage according to claim 1, characterized in that, the top side of the casing (7) is also provided with an exhaust port (4), and the exhaust port (4 ) is also in communication with the phase change material storage part (10). 9. The solar water heater integrated with phase change heat collection and energy storage according to claim 8, characterized in that a pressure relief valve is also installed on the exhaust port (4). 10. The solar water heater integrated with phase-change heat collection and energy storage according to claim 1, characterized in that, the lateral section of the housing (7) is elliptical, and the transparent cover (9) is a plastic solar panel or Tempered glass panel.