Pressure-bearing cascade hot water solar system

Abstract

The utility model relates to the technical field of heat supply and water supply systems, in particular to a pressure-bearing cascade hot water solar system, which comprises a plurality of enamel water tanks connected in series and used for heat preservation, only one electric heating system is arranged to supply heat to other enamel water tanks connected in series, electric heaters are prevented from being mounted on all the water tanks, and cost is saved. The controller receives the temperature data of the water body in the enamel inner container, analyzes the temperature data and feeds back a signal, the immersion type heating pipe is controlled to be started and stopped, and the temperature of the hot water of a user is automatically controlled. The water temperature is automatically controlled, and the water use experience of the terminal is good. The enamel inner container is matched with the heat collector, solar energy is utilized to the maximum extent, the solar energy can be fully utilized on sunny days, an electric heating system does not need to be started under the condition that the use temperature is reached, electric energy is saved, and low carbon and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heating water supply systems, in particular to a pressurized cascaded hot water solar system. Background Art

[0002] In the existing heating system, the hot water for users is not considered, but users solve the hot water problem through various water heaters. In the case of centralized heating, especially in solar centralized heating, in the non-heating season, the solar energy equipment is idle, and solar energy cannot be utilized 24 hours a day throughout the year. The equipment is in a stopped state, and measures need to be taken to avoid overheating of the system. The utilization rate of centralized heating, especially solar centralized heating, is low, and the heating function is single. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a pressurized cascaded hot water solar system which combines multiple-module solar enamel water tanks with collectors, has a small size, is easy to carry, only needs one heater for heating and series energy storage, aiming at the deficiencies of the prior art.

[0004] The technical problem to be solved by the utility model is realized through the following technical solutions. A pressurized cascaded hot water solar system includes a plurality of serially arranged solar pressurized modules. Each solar pressurized module includes an enamel water tank, and a collector is installed on the enamel water tank. Two adjacent enamel water tanks are connected through an intermediate connector. The intermediate connector includes a liquid outlet joint and a liquid inlet joint which are connected. The liquid outlet joint is arranged at the liquid outlet end of the previous enamel water tank, and the liquid inlet joint is arranged at the liquid inlet end of the adjacent subsequent enamel water tank. One end of the liquid outlet joint extending into the enamel water tank is connected with a downward-bending pipe with an opening downward, and one end of the liquid inlet joint extending into the enamel water tank is connected with an upward-bending pipe with an opening upward. The liquid outlet joint and the liquid inlet joint are both hermetically connected to the enamel water tank. A high-power electric heating system is arranged in the first enamel water tank along the water inlet direction. The system is insulated through multiple serially connected enamel water tanks, and only one electric heating system is set to supply heat to other serially connected enamel water tanks, avoiding the installation of electric heaters on all water tanks, saving costs, and enabling pressurized hot water use even on rainy days.

[0005] As a further scheme of the utility model, the collector includes a group of a plurality of glass vacuum heat pipes arranged in parallel. The glass vacuum heat pipes are inclined, the heat release end at the top of the glass vacuum heat pipe extends into the enamel water tank, and a heat conduction medium is arranged in the glass vacuum heat pipe. Through the continuous transformation of the state of the heat conduction medium in the glass vacuum heat pipe, the heat is transferred to the water body in the enamel water tank.

[0006] As a further solution of the present utility model, the enamel water tank comprises a water tank outer shell and an enamel inner tank. A group of several vacuum tube holes are formed in the enamel inner tank, and the vacuum tube holes are in one-to-one correspondence with the glass vacuum heat pipes. Thermal conductive silicone grease is coated at the sealing surface between the vacuum tube holes and the glass vacuum heat pipes. The inner extension length of the heat release end of the glass vacuum heat pipe is greater than the radius of the enamel water tank. Thermal conductive silicone grease is coated at the sealing surface between the vacuum tube holes and the glass vacuum heat pipes to strictly seal the sealing surface and prevent leakage.

[0007] As a further solution of the present utility model, the glass vacuum heat pipes of the collector are grouped in sets of 10 or 15. Ten or fifteen glass vacuum heat pipes are grouped together. Each module can be carried to the roof separately. The carrying weight is light, the carrying is convenient, and the assembly efficiency is high.

[0008] As a further solution of the present utility model, the electric heating system comprises an immersion heating pipe extending into the enamel inner tank, a temperature controller and a temperature sensor arranged on the enamel inner tank. The immersion heating pipe is connected to an external power supply through a wire, and the immersion heating pipe, the temperature controller and the temperature sensor are all connected to a controller through communication lines. The immersion heating pipe directly heats the water body in the enamel inner tank, with high thermal energy utilization rate, low thermal energy loss, fast water temperature rise speed, cost saving, and enabling the use of pressurized hot water even on rainy days.

[0009] As a further solution of the present utility model, an intermediate fixing member is provided between two adjacent collectors. The intermediate fixing member comprises a strip-shaped structural member. The width of the structural member matches the installation gap formed between the two collectors. Fixing grooves are provided on both sides of the structural member along the length direction, and the openings of the fixing grooves face downward. Support frames parallel to the glass vacuum heat pipes are provided on both sides of the collector. The support frame comprises an inclined strut. The fixing groove and the inclined strut are identical in shape and size. The two fixing grooves are respectively clamped on the two adjacent inclined struts. A foldable plate that can be telescopically extended horizontally is provided between the two fixing grooves. The foldable plate is tightened or unfolded according to the different distances between the two support frames to adapt to the matching of installation gaps of different sizes, facilitating installation and disassembly.

[0010] As a further solution of the present utility model, the outer wall of the intermediate connecting member is wrapped with a heat insulation layer, and the outer wall of the heat insulation layer is flush with the outer wall of the enamel water tank. The heat insulation layer provides heat insulation to a certain extent and prevents the intermediate connecting member from dissipating heat outward.

[0011] The beneficial effects of the present utility model are:

[0012] A pressure-bearing cascaded hot water solar energy system provided by the utility model includes that the system is formed by connecting multiple enamel water tanks in series and is thermally insulated. Only one electric heating system is provided to supply heat to other enamel water tanks connected in series, avoiding the installation of electric heaters on all water tanks, saving costs, and enabling the use of pressurized hot water even on rainy days. The controller receives the temperature data of the water body in the enamel inner tank, analyzes it and then feeds back a signal to control the start and stop of the immersion heating pipe, automatically controlling the water temperature of the user's hot water. The automatic control of the water temperature provides a good terminal water use experience. The enamel inner tank cooperates with the collector to make the most of solar energy. On sunny days, when the solar energy can be fully utilized to reach the use temperature, the electric heating system does not need to be turned on, saving electric energy and being low-carbon and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the utility model Figure 1 ;

[0014] Figure 2 is a schematic structural diagram of the utility model Figure 2 ;

[0015] Figure 3 is a schematic structural diagram of a single solar energy pressure-bearing module of the utility model;

[0016] Figure 4 is a schematic structural diagram of the assembly of the enamel inner tank and the glass vacuum heat pipe of the utility model;

[0017] Figure 5 is a detailed drawing of the intermediate fixing part of the utility model.

[0018] Wherein: 1 - support frame, 2 - collector, 201 - glass vacuum heat pipe, 3 - immersion heating pipe, 301 - thermostat, 302 - temperature sensor, 4 - enamel water tank, 401 - water tank shell, 402 - enamel inner tank, 5 - intermediate connecting piece, 501 - downward bent pipe, 502 - liquid outlet joint, 503 - liquid inlet joint, 504 - upward bent pipe, 6 - thermal insulation layer, 7 - intermediate fixing part, 701 - fixing groove, 702 - folding plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the purpose, technical solutions and advantages of the utility model clearer, the following further details the utility model through embodiments and in conjunction with the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model.

[0020] The serial numbers assigned to components in this article itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. And the "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0022] Embodiment 1

[0023] As Figures 1 to 4 shown, a pressure-bearing cascaded hot water solar energy system includes a plurality of serially arranged solar energy pressure-bearing modules. Each solar energy pressure-bearing module includes an enamel water tank 4. The enamel water tank includes a water tank outer shell 401 and an enamel inner tank 402. A collector 2 is installed on the enamel water tank. The collector includes a group of a plurality of glass vacuum heat pipes 201 arranged in parallel with each other. A group of a plurality of vacuum tube holes are formed on the enamel inner tank. The vacuum tube holes correspond to the glass vacuum heat pipes one by one. A heat-conducting silicone grease is coated at the sealing surface between the vacuum tube holes and the glass vacuum heat pipes. The inner extension length of the heat release end of the glass vacuum heat pipe is greater than the radius of the enamel water tank. The glass vacuum heat pipes of the collector are grouped in sets of 10. When a greater heat collection requirement is needed, sets of 15 are used to form a solar energy pressure-bearing module, providing more sufficient hot water.

[0024] The glass vacuum heat pipes are inclined. The heat release end at the top of the glass vacuum heat pipe extends into the enamel water tank. A heat-conducting medium is provided in the glass vacuum heat pipe. The heat-conducting medium is a low-boiling-point solution. The heat-conducting medium absorbs heat and vaporizes and rises to the top, releases heat and liquefies after heat exchange, and flows down along the inclined glass vacuum heat pipe, repeating this process.

[0025] Two adjacent enamel water tanks are connected through an intermediate connecting member 5, and the outer wall of the intermediate connecting member 5 is wrapped with a heat insulation layer 6, and the outer wall of the heat insulation layer is flush with the outer wall of the enamel water tank.

[0026] The intermediate connecting member 5 includes a liquid outlet joint 502 and a liquid inlet joint 503 that are connected and communicate with each other. The liquid outlet joint is arranged at the liquid outlet end of the previous enamel water tank, and the liquid inlet joint is arranged at the liquid inlet end of the adjacent subsequent enamel water tank. One end of the liquid outlet joint extending into the enamel water tank is connected with a downward-bending pipe 501 with an opening downward, and one end of the liquid inlet joint extending into the enamel water tank is connected with an upward-bending pipe 504 with an opening upward. Both the liquid outlet joint and the liquid inlet joint are hermetically connected to the enamel water tank. After the water body is heated, under the action of pressure, the water body is transported from the downward-bending pipe of the first enamel water tank through the liquid outlet joint to the liquid inlet joint, and enters the adjacent next enamel water tank 4 along the downward-bending pipe, and flows in sequence to fill the entire series of multiple enamel water tanks.

[0027] A high-power electric heating system is provided in the first enamel water tank along the water inlet direction. The electric heating system includes an immersion heating pipe 3 extending into the enamel inner tank, a temperature controller 301 and a temperature sensor 302 arranged on the enamel inner tank. The immersion heating pipe is connected to an external power supply through a wire. The immersion heating pipe is powered by the external power supply to heat the water body in the enamel water tank. During the process of the water body heating up, the temperature controller and the temperature sensor will retrieve the water temperature in real time. Both the temperature controller and the temperature sensor are connected to the controller through communication lines. The temperature controller and the temperature sensor transmit the temperature to the controller, and the controller controls the heating time and heating frequency of the immersion heating pipe to control the temperature of the water body in the enamel water tank at a constant temperature.

[0028] Embodiment 2

[0029] An intermediate fixing member 7 is provided between two adjacent collectors. The intermediate fixing member includes a strip-shaped structural member. The width of the structural member matches the installation gap formed between the two collectors. Fixing grooves 701 are provided on both sides of the structural member along the length direction. The fixing grooves are arranged with openings downward. Support frames 1 parallel to the glass vacuum heat pipes are provided on both sides of the collector. The support frames include inclined struts. The fixing grooves are identical in shape and size to the inclined struts. The two fixing grooves are respectively stuck on the two adjacent inclined struts. A foldable plate 702 that can be horizontally telescoped is provided between the two fixing grooves. The foldable plate is compressed or extended according to the actual installation gap. The intermediate fixing member can fix two adjacent collectors, can play a decorative role, and can also be efficiently disassembled and assembled.

[0030] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope described in this specification.

[0031] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A pressurized cascade hot water solar system, characterized in that: The invention comprises a plurality of solar pressure-bearing modules arranged in series, each solar pressure-bearing module comprises an enameled water tank (4), a heat collector (2) is mounted on the enameled water tank, two adjacent enameled water tanks are connected via an intermediate connecting piece (5), the intermediate connecting piece comprises a liquid outlet joint (502) and a liquid inlet joint (503) which are connected to each other, the liquid outlet joint being arranged at the liquid outlet end of the preceding enameled water tank, the liquid inlet joint being arranged at the liquid inlet end of the adjacent subsequent enameled water tank, one end of the liquid outlet joint extending into the enameled water tank being connected to a lower curved pipe (501) with an opening facing downward, and one end of the liquid inlet joint extending into the enameled water tank being connected to an upper curved pipe (504) with an opening facing upward, the liquid outlet joint and the liquid inlet joint are both sealed and connected to the enameled water tank, and a high-power electric heating system is arranged in the first enameled water tank along the water inlet direction.

2. The pressurized cascade hot water solar energy system according to claim 1, characterized in that: The heat collector (2) comprises a group of a plurality of glass vacuum heat pipes (201) arranged in parallel with each other. The glass vacuum heat pipes are arranged at an angle. The heat release ends at the tops of the glass vacuum heat pipes extend into the enamel water tank. A heat conducting medium is provided in the glass vacuum heat pipes.

3. The pressurized cascade hot water solar energy system according to claim 2, characterized in that: The enameled water tank (4) comprises a water tank shell (401) and an enameled inner tank (402). A group of vacuum tube holes are provided on the enameled inner tank. The vacuum tube holes correspond to the glass vacuum heat pipes one by one. Thermal conductive silicone grease is coated on the sealing surface between the vacuum tube holes and the glass vacuum heat pipes (201). The inner extension length of the heat release end of the glass vacuum heat pipe is greater than the radius of the enameled water tank.

4. The pressurized cascade hot water solar energy system according to claim 2, characterized in that: The glass vacuum heat pipes (201) of the heat collector (2) are grouped into 10 or 15 pieces.

5. The pressurized cascade hot water solar energy system according to claim 1, characterized in that: The electric heating system comprises an immersion heating tube (3) extending into an enamel inner tank, and a temperature controller (301) and a temperature sensor (302) arranged on the enamel inner tank; the immersion heating tube is connected to an external power source via a wire, and the immersion heating tube, the temperature controller and the temperature sensor are all connected to a controller via a communication line.

6. The pressurized cascade hot water solar energy system according to claim 3, characterized in that: An intermediate fixing member (7) is provided between two adjacent collectors, the intermediate fixing member comprising an elongated structural member, the width of the structural member being matched with the installation gap formed between the two collectors, fixing grooves (701) being provided on both sides of the structural member along the length direction, the openings of the fixing grooves being arranged downward, support frames (1) being arranged parallel to the glass vacuum heat pipes being provided on both sides of the collectors, the support frames comprising inclined support rods, the fixing grooves being matched in shape and size with the inclined support rods, the two fixing grooves being respectively clamped on two adjacent inclined support rods, and a folding plate (702) being laterally retractable being provided between the two fixing grooves.

7. The pressurized cascade hot water solar energy system according to claim 1, characterized in that: The outer wall of the intermediate connecting piece (5) is wrapped with a thermal insulation layer (6), and the outer wall of the thermal insulation layer is arranged flush with the outer wall of the enamel water tank.

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