Energy-saving and environment-friendly solar heat storage and supply device

Abstract

The application discloses an energy-saving and environment-friendly solar heat storage and supply device which can effectively improve heat storage capacity and solar energy utilization effect, and can effectively suppress the imbalance of solar heat production through the energy storage of a heat storage water tank. Meanwhile, the heat storage water tank comprises a water tank body in a cylindrical structure and a vacuum heat preservation cylinder, so that the heat preservation effect of the heat storage water tank can be effectively improved. When solar energy is slightly insufficient, the inner storage cavity stores hot water with a higher temperature, and the outer storage cavity stores hot water with a slightly lower temperature, so that the amount of heat dissipation of the outer storage cavity to the outside can be reduced. Meanwhile, the water in the outer storage cavity can be returned to solar energy for utilization when solar energy is seriously insufficient, so that the heat of output hot water is effectively ensured, heat storage effect and suppression capacity are improved, the control of the application is simple, energy loss can be effectively saved, and heat utilization effect and capacity are ensured.

Description

Technical Field

[0001] Specifically, this invention relates to an energy-saving and environmentally friendly solar thermal storage and heating device, and pertains to the field of solar thermal storage equipment. Background Technology

[0002] Currently, with the continuous development and utilization of clean energy, solar energy is being used more and more. The current application of solar energy generally involves solar panels and water heaters. Water heaters are one of the most widely used methods due to their ease of installation, low cost, and the ability for each user to install and manage them individually. However, current solar water heaters generally supply hot water to users through solar energy storage. In areas with poor sunlight, the impact on the water heater is significant, and there is a large difference between daytime and nighttime temperatures. Furthermore, water heaters struggle to effectively store heat, making it difficult to suppress this uneven heat distribution. In other words, the energy storage problem of water heaters seriously affects their performance. Ordinary energy storage methods, such as simple phase change thermal storage, suffer from significant heat loss due to poor heat dissipation or insulation of the storage device, affecting efficiency and failing to effectively mitigate the uneven distribution of solar water heating. Summary of the Invention

[0003] Therefore, in order to overcome the above-mentioned shortcomings, the present invention provides an energy-saving and environmentally friendly solar thermal storage and heating device.

[0004] This invention is implemented by constructing an energy-saving and environmentally friendly solar thermal storage and heating device, which includes a solar water heater, solar panels, a cold water inlet pipe, a hot water outlet pipe, a hot water storage tank, a hot water supply pipe, a cold water filling pipe, a tee, a warm water outlet pipe, an internal hot water storage pipe, an external hot water storage pipe, and an electric heating component. The solar panels are installed on one or both sides of the solar water heater. The output end of the solar panels is connected to a battery, and the battery is connected to the electric heating component. The electric heating component is installed at one end of the hot water storage tank. The output end of the insulated water tank is connected to the hot water outlet pipe, and the input end of the insulated water tank of the solar water heater is connected to the cold water inlet pipe; the hot water storage tank is supported and installed by a support frame, characterized in that the hot water storage tank includes a cylindrical tank body and a vacuum insulation cylinder, and the annular vacuum insulation cylinder is coaxially arranged inside the hot water storage tank. The vacuum insulation cylinder divides the tank body into an inner storage cavity and an outer storage cavity. The inner storage cavity is the inner cavity of the vacuum insulation cylinder, and the outer storage cavity is the cavity between the outer wall of the vacuum insulation cylinder and the inner wall of the tank body.

[0005] The lower part of the inner storage cavity is connected to a hot water output connector pipe, which is arranged vertically downwards, and the output end of the hot water output connector pipe is connected to the hot water supply pipe, which is connected to the user side.

[0006] The upper part of the inner storage cavity is connected to a hot water pipe for memory, and the hot water pipe for memory is arranged vertically upwards;

[0007] The upper part of the external storage cavity is also connected to a warm water outlet pipe and an external hot water storage pipe arranged in parallel, and both the warm water outlet pipe and the external hot water storage pipe are arranged vertically upwards.

[0008] The internal hot water pipe and the external hot water pipe are connected to the hot water outlet pipe via the tee.

[0009] The warm water outlet pipe and the cold water filling pipe are connected to the cold water inlet pipe via the tee; the cold water filling pipe is connected to an external water filling device.

[0010] Furthermore, as a preferred embodiment, a first control valve is provided on the internal hot water pipe, a second control valve is provided on the external hot water pipe, a third control valve is provided on the warm water outlet pipe, and a fourth control valve is provided on the cold water supply pipe. The electric heating component, the first control valve, the second control valve, the third control valve, and the fourth control valve are all controlled by a controller.

[0011] Furthermore, as a preferred embodiment, a miniature water pump is installed on both the cold water inlet pipe and the hot water outlet pipe, and a temperature sensor and a liquid level sensor are installed in both the inner storage cavity, the outer storage cavity, and the insulated water tank of the solar water heater.

[0012] Furthermore, as a preferred embodiment, the controller is configured to at least satisfy the following conditions: when the temperature and liquid level in the insulated water tank are both greater than their set values, and the liquid level in the inner storage cavity has not reached its set value, the controller controls the first control valve to open and the second control valve to close, so that the hot water in the insulated water tank flows to the inner storage cavity first.

[0013] When the temperature and liquid level in the insulated water tank are both greater than their set values, and when the liquid level in the inner storage cavity reaches its set value, the first control valve closes and the second control valve opens, so that the hot water in the insulated water tank flows to the outer storage cavity after the liquid level in the inner storage cavity reaches its set value.

[0014] Furthermore, preferably, the controller is configured to at least satisfy the following conditions: when the liquid level in the insulated water tank is lower than its set value, and both the temperature and liquid level in the external storage cavity are higher than the set values, the controller controls the third control valve to open and the fourth control valve to close, so that the warm water in the external storage cavity flows into the insulated water tank; when the liquid level in the insulated water tank is lower than its set value, and either the temperature or the liquid level in the external storage cavity is lower than its respective set value, the controller controls the third control valve to close and the fourth control valve to open, so that the cold water from the external water supply device flows into the insulated water tank.

[0015] Furthermore, as a preferred embodiment, the hot water storage tank is equipped with a display for showing the temperature and liquid level in the inner and outer storage chambers.

[0016] Furthermore, as a preferred embodiment, the hot water storage tank includes a cylinder, a first end cap, and a second end cap that are fixedly connected together. The first end cap and the second end cap are respectively sealed and fastened to the axial ends of the cylinder, and the electric heating assembly is arranged on the first end cap and / or the second end cap.

[0017] Furthermore, preferably, the cable of the electric heating assembly passes through the center of the first end cap and / or the second end cap and is then connected to the battery.

[0018] Furthermore, as a preferred embodiment, both the first end cap and the second end cap include an integrally formed outer cover body, an inner cover body, and an outer insulation layer. The outer cover body and the inner cover body are integrally formed with a gap between them. The gap between the outer cover body and the inner cover body constitutes a phase change heat storage cavity, which is filled with a phase change material. The outer edge of the inner cover body is provided with a locking groove that engages and seals with the end of the cylinder. The outer wall of the inner cover body is provided with the outer insulation layer. One end of the inner cover body facing the cylinder is provided with a cylindrical heat-conducting column that extends into the phase change material. Both ends of the heat-conducting column penetrate the inner cover body and extend into the cylinder body.

[0019] Furthermore, as a preferred embodiment, the inner cover body comprises two layers of metal annular disks, with a spacer cavity provided between the two layers of metal annular disks, and a dense array of multiple heat-conducting columns arranged through the metal annular disks. The electric heating assembly includes a heating rod, which is fixedly installed on the metal annular disks facing the cylinder body and extends into the cylinder body.

[0020] The present invention has the following advantages: Compared with similar equipment, the energy-saving and environmentally friendly solar thermal storage and heating device provided by the present invention has the following advantages:

[0021] This invention discloses an energy-saving and environmentally friendly solar thermal storage and heating device, which can effectively improve thermal storage capacity and solar energy utilization. Through the energy storage of the hot water tank, it can effectively mitigate the unevenness of solar heat generation. Simultaneously, the hot water tank includes a cylindrical tank body and a vacuum insulation cylinder, which effectively improves the insulation effect of the hot water tank. When solar energy is slightly insufficient, the inner storage chamber stores hot water at a higher temperature, while the outer storage chamber stores hot water at a slightly lower temperature, reducing the amount of heat dissipated from the outer storage chamber to the outside. Furthermore, the water in the outer storage chamber can be returned to the solar energy source for reuse when solar energy is severely insufficient, effectively ensuring the heat output of the hot water and improving thermal storage and mitigation capabilities. This invention is simple to control, effectively saves energy loss, and ensures the utilization effect and capacity of heat. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the hot water storage tank of the present invention;

[0024] Figure 3 This is the invention Figure 1 An enlarged structural diagram at point A in the diagram;

[0025] Figure 4 This is a schematic diagram of the structure of the first end cap or the second end cap of the present invention after the electric heating component is installed;

[0026] Figure 5 This is a schematic diagram of the structure of the first or second end cap of the present invention when the electric heating component is not installed. Detailed Implementation

[0027] The following will be combined with the appendix Figure 1-5 This invention will be described in detail, and the technical solutions in the embodiments of this invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0028] This invention provides an energy-saving and environmentally friendly solar thermal storage and heating device, comprising a solar water heater 1, a solar panel 2, a cold water inlet pipe 5, a hot water outlet pipe 4, a hot water storage tank 13, a hot water supply pipe 11, a cold water filling pipe 7, a tee 9, a warm water outlet pipe 28, an internal hot water pipe 26, an external hot water storage pipe 27, and an electric heating component. The solar panel is mounted on one or both sides of the solar water heater 1, and the output end of the solar panel is connected to a battery. The battery is connected to the electric heating component. The electric heating component is located at one end of the hot water storage tank. The solar water heater 1 is insulated. The output end of the water tank 3 is connected to the hot water outlet pipe 4, and the input end of the insulated water tank 3 of the solar water heater 1 is connected to the cold water inlet pipe 5; the hot water storage tank 13 is supported and installed by a support frame 10. The hot water storage tank 13 includes a cylindrical water tank body 24 and a vacuum insulation cylinder 22. The vacuum insulation cylinder 22 is coaxially arranged inside the hot water storage tank. The vacuum insulation cylinder 22 divides the water tank body into an inner storage cavity 25 and an outer storage cavity 21. The inner storage cavity is the inner cavity of the vacuum insulation cylinder, and the outer storage cavity is the cavity between the outer wall of the vacuum insulation cylinder and the inner wall of the water tank body.

[0029] The lower part of the inner storage cavity 25 is connected to a hot water output connector pipe 23. The hot water output connector pipe 23 is arranged vertically downwards, and the output end of the hot water output connector pipe 23 is connected to the hot water supply pipe 11, which is connected to the user side.

[0030] The upper part of the inner storage cavity 25 is connected to a memory hot water pipe 26, which is arranged vertically upwards.

[0031] The upper part of the external storage cavity is also connected to a warm water outlet pipe 28 and an external hot water storage pipe 27 arranged in parallel, and both the warm water outlet pipe 28 and the external hot water storage pipe 27 are arranged vertically upwards.

[0032] The internal hot water pipe 26 and the external hot water pipe 27 are connected to the hot water outlet pipe 4 via the tee 9;

[0033] The warm water outlet pipe 28 and the cold water supply pipe 7 are connected to the cold water inlet pipe 5 via the tee; the cold water supply pipe 7 is connected to an external water supply device, which is a tap water pipe and a water pump and other components.

[0034] In this embodiment, a first control valve 6 is provided on the internal hot water pipe 26, a second control valve 17 is provided on the external hot water pipe 27, a third control valve 18 is provided on the warm water outlet pipe 28, and a fourth control valve 19 is provided on the cold water supply pipe 7. The electric heating component, the first control valve, the second control valve, the third control valve, and the fourth control valve are all controlled by a controller.

[0035] In a preferred embodiment, for ease of control, a miniature water pump 16 is installed on both the cold water inlet pipe 5 and the hot water outlet pipe 4, and a temperature sensor and a liquid level sensor are installed in both the inner storage cavity 25, the outer storage cavity 21, and the insulated water tank 3 of the solar water heater 1.

[0036] As a preferred and more basic control method, the controller of the present invention is configured to at least satisfy the following conditions: when the temperature and liquid level in the insulated water tank 3 are both greater than their set values, and the liquid level in the inner storage cavity 25 has not reached its set value, the controller controls the first control valve 6 to open and the second control valve 17 to close, so that the hot water in the insulated water tank flows to the inner storage cavity 25 first.

[0037] When the temperature and liquid level in the insulated water tank 3 are both greater than their set values, and when the liquid level in the inner storage cavity 25 reaches its set value, the first control valve 6 closes and the second control valve 17 opens, so that the hot water in the insulated water tank flows to the outer storage cavity 21 after the liquid level in the inner storage cavity 25 reaches its set value.

[0038] As a further preferred control method, the controller is configured to at least satisfy the following conditions: when the liquid level in the insulated water tank 3 is lower than its set value, and both the temperature and liquid level in the external storage chamber 21 are higher than the set values, the controller controls the third control valve 18 to open and the fourth control valve 19 to close, so that the warm water in the external storage chamber 21 flows into the insulated water tank 3; when the liquid level in the insulated water tank 3 is lower than its set value, and either the temperature or the liquid level in the external storage chamber 21 is lower than its respective set value, the controller controls the third control valve 18 to close and the fourth control valve 19 to open, so that the cold water from the external water supply device flows into the insulated water tank 3.

[0039] Of course, to improve efficiency, other control methods can be set up based on actual needs.

[0040] In this invention, for ease of display, the hot water storage tank 13 is provided with a display 12 for displaying the temperature and liquid level in the inner storage chamber 25 and the outer storage chamber 21.

[0041] The hot water storage tank 13 includes a cylindrical body, a first end cover 8, and a second end cover 14 that are fixedly connected together. The first end cover and the second end cover are respectively sealed and fastened to the two axial ends of the cylindrical body, and the electric heating component is arranged on the first end cover and / or the second end cover.

[0042] The cable of the electric heating component passes through the center of the first end cap and / or the second end cap and is connected to the battery.

[0043] Furthermore, both the first end cap and the second end cap include an integrally formed outer cover body 33, an inner cover body 31, and an outer insulation layer 29. The outer cover body and the inner cover body are integrally formed with a gap between them. The gap between the outer cover body and the inner cover body constitutes a phase change heat storage cavity, which is filled with a phase change material. The outer edge of the inner cover body is provided with a locking groove 35 that engages and seals with the end of the cylinder. The outer wall of the inner cover body 31 is provided with the outer insulation layer. One end of the inner cover body facing the cylinder is provided with a cylindrical heat-conducting column 30 that extends into the phase change material. Both ends of the heat-conducting column penetrate the inner cover body and extend into the cylinder.

[0044] The inner cover is composed of two metal annular disks 32, with a spacer cavity between the two metal annular disks. A plurality of heat-conducting columns 30 are densely arranged through the metal annular disks 32. The electric heating assembly includes a heating rod, which is fixedly installed on the metal annular disks 32 facing the cylinder and extends into the cylinder.

[0045] This invention can effectively improve heat storage capacity and enhance the utilization of solar energy. Through the energy storage of the hot water tank, it can effectively mitigate the unevenness of solar heat generation. Simultaneously, the hot water tank includes a cylindrical tank body and a vacuum insulation cylinder, which effectively improves the heat preservation effect. When solar energy is slightly insufficient, the inner storage chamber stores hot water at a higher temperature, while the outer storage chamber stores hot water at a slightly lower temperature, reducing the amount of heat dissipated from the outer storage chamber to the outside. Furthermore, the water in the outer storage chamber can be returned to the solar system for reuse when solar energy is severely insufficient, effectively ensuring the heat output of the hot water and improving the heat storage effect and mitigation capability. This invention is simple to control, effectively saves energy loss, and ensures the utilization effect and capacity of heat.

[0046] The above description shows and illustrates the basic principles, main features, and advantages of the present invention. Standard parts used in the present invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0047] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy-saving and environmentally friendly solar thermal storage and heating device, comprising a solar water heater (1), a solar panel (2), a cold water inlet pipe (5), a hot water outlet pipe (4), a hot water storage tank (13), a hot water supply pipe (11), a cold water filling pipe (7), a tee (9), a warm water outlet pipe (28), an internal hot water pipe (26), an external hot water storage pipe (27), and an electric heating component, wherein, The solar water heater (1) is provided with solar panels on one or both sides, the output end of the solar panels is connected to a storage battery, the storage battery is connected to the electric heating component, the electric heating component is provided at one end of the hot water storage tank, the output end of the insulated water tank (3) of the solar water heater (1) is connected to the hot water outlet pipe (4), and the input end of the insulated water tank (3) of the solar water heater (1) is connected to the cold water inlet pipe (5); the hot water storage tank (13) is supported and installed by a support frame (10), characterized in that the hot water storage tank (13) includes a cylindrical tank body (24) and a vacuum insulation cylinder (22), the vacuum insulation cylinder (22) is coaxially arranged in the hot water storage tank, the vacuum insulation cylinder (22) divides the tank body into an inner storage cavity (25) and an outer storage cavity (21), the inner storage cavity is the inner cavity of the vacuum insulation cylinder, and the outer storage cavity is the cavity between the outer wall of the vacuum insulation cylinder and the inner wall of the tank body; The lower part of the inner storage cavity (25) is connected to a hot water output connector pipe (23), which is arranged vertically downwards. The output end of the hot water output connector pipe (23) is connected to the hot water supply pipe (11), which is connected to the user side. The upper part of the inner storage cavity (25) is connected to a hot water pipe (26), which is arranged vertically upwards; The upper part of the external storage cavity is also connected to a warm water outlet pipe (28) and an external hot water pipe (27) arranged in parallel, and both the warm water outlet pipe (28) and the external hot water pipe (27) are arranged vertically upwards. The internal hot water pipe (26) and the external hot water pipe (27) are connected to the hot water outlet pipe (4) through the tee (9); The warm water outlet pipe (28) and the cold water supply pipe (7) are connected to the cold water inlet pipe (5) via the tee; the cold water supply pipe (7) is connected to an external water supply device; The internal hot water pipe (26) is provided with a first control valve (6), the external hot water pipe (27) is provided with a second control valve (17), the warm water outlet pipe (28) is provided with a third control valve (18), and the cold water supply pipe (7) is provided with a fourth control valve (19). The electric heating component, the first control valve, the second control valve, the third control valve and the fourth control valve are all controlled by the controller. The controller is configured to satisfy at least the following conditions: when the temperature and liquid level in the insulated water tank (3) are both greater than their set values, and the liquid level in the inner storage cavity (25) has not reached its set value, the controller controls the first control valve (6) to open and the second control valve (17) to close, so that the hot water in the insulated water tank flows to the inner storage cavity (25) first. When the temperature and liquid level in the insulated water tank (3) are both greater than their set values, and when the liquid level in the inner storage cavity (25) reaches its set value, the first control valve (6) closes and the second control valve (17) opens, so that the hot water in the insulated water tank flows to the outer storage cavity (21) after the liquid level in the inner storage cavity (25) reaches its set value.

2. The energy-saving and environmentally friendly solar thermal storage and heating device according to claim 1, characterized in that: A miniature water pump (16) is installed on the cold water inlet pipe (5) and the hot water outlet pipe (4). Temperature sensors and liquid level sensors are installed in the inner storage chamber (25), the outer storage chamber (21), and the insulated water tank (3) of the solar water heater (1).

3. The energy-saving and environmentally friendly solar thermal storage and heating device according to claim 1, characterized in that: The controller is configured to at least satisfy the following conditions: when the liquid level in the insulated water tank (3) is less than its set value, and the temperature and liquid level in the external storage chamber (21) are both greater than the set value, the controller controls the third control valve (18) to open and the fourth control valve (19) to close, so that the warm water in the external storage chamber (21) flows into the insulated water tank (3); when the liquid level in the insulated water tank (3) is less than its set value, and one of the temperature or liquid level in the external storage chamber (21) is less than its respective set value, the controller controls the third control valve (18) to close and the fourth control valve (19) to open, so that the cold water from the external water supply device flows into the insulated water tank (3).

4. The energy-saving and environmentally friendly solar thermal storage and heating device according to claim 1, characterized in that: The hot water storage tank (13) is equipped with a display (12) for displaying the temperature and liquid level in the inner storage chamber (25) and the outer storage chamber (21).

5. The energy-saving and environmentally friendly solar thermal storage and heating device according to claim 1, characterized in that: The hot water storage tank (13) includes a cylinder, a first end cap (8), and a second end cap (14) that are fixedly connected together. The first end cap and the second end cap are respectively sealed and fastened to the two ends of the cylinder. The electric heating assembly is arranged on the first end cap and / or the second end cap.

6. The energy-saving and environmentally friendly solar thermal storage and heating device according to claim 5, characterized in that: The cable of the electric heating component passes through the center of the first end cap and / or the second end cap and is connected to the battery.

7. The energy-saving and environmentally friendly solar thermal storage and heating device according to claim 6, characterized in that: The first end cap and the second end cap each include an integrally formed outer cover body (33), an inner cover body (31), and an outer insulation layer (29). The outer cover body and the inner cover body are integrally formed with a gap between them. The gap cavity between the outer cover body and the inner cover body constitutes a phase change heat storage cavity, which is filled with phase change material. The outer edge of the inner cover body is provided with a locking groove (35) that is locked and sealed to the end of the cylinder. The outer wall of the inner cover body (31) is provided with the outer insulation layer. The end of the inner cover body facing the cylinder is provided with a cylindrical heat-conducting column (30) that extends into the phase change material. The two ends of the heat-conducting column penetrate the inner cover body and extend into the cylinder.

8. The energy-saving and environmentally friendly solar thermal storage and heating device according to claim 7, characterized in that: The inner cover is composed of two metal annular disks (32), with a spacer cavity between the two metal annular disks. A plurality of heat-conducting columns (30) are densely arranged through the metal annular disks (32). The electric heating assembly includes a heating rod, which is fixedly installed on the metal annular disks (32) facing the cylinder and extends into the cylinder.

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