CN117553436A - Solar water heater - Google Patents

Abstract

The invention relates to the technical field of solar water heaters, in particular to a solar water heater. The device comprises a heat exchange water tank, a coiled pipe arranged in the heat exchange water tank, a water storage tank and a hot water pipe coiled at the outer wall of the water storage tank; a water cavity for storing water is formed in the water storage tank, and a circulating heat exchange pipeline for circulating water at the water cavity is formed among the inner cavity of the coiled pipe, the inner cavity of the hot water pipe, the inner cavity of the circulating pipe and the water cavity. When the water heater is used, after the water in the coiled pipe is heated, the hot water pipe flows into the top of the coiled pipe, the heat of the hot water is used for heating the outer wall of the water storage tank through the spirally wound hot water pipe, and the water temperature in the water storage tank can be improved after a long time.

Description

solar water heaters

Technical field

The present invention relates to the technical field of solar water heaters, and in particular to a solar water heater.

Background technique

Solar water heaters are devices that use sunlight to heat water. Currently, the mainstream vacuum tube household solar water heaters are mainly composed of heat collecting tubes, hot water exchange tanks, heat exchange tube systems, water storage tanks and brackets. Among them, the hot water exchange tank is filled with a heat exchange medium such as water. The heat collecting tube uses solar energy to heat the heat exchange medium. The heat exchange medium heats the water in the water storage tank through the heat exchange tube system. The water in the water storage tank can be As domestic hot water.

The existing heat exchange tube system usually has two serpentine tubes respectively located in the hot water exchange tank and the water storage tank. The two serpentine tubes constitute an independent internal circulation heat exchange system; this heat exchange method It is difficult to achieve balanced heating of the water in the water storage tank, that is, the closer the water storage tank is to the corresponding serpentine tube, the higher the water temperature will be.

Contents of the invention

The present invention provides a solar water heater, which can overcome some or some defects of the existing technology.

In order to achieve the above objects, the present invention adopts the following technical solutions:

The solar water heater includes a hot water exchange tank, a serpentine tube located in the hot water exchange tank, a water storage tank, and a hot water pipe coiled around the outer wall of the water storage tank; a water chamber for storing water is formed in the water storage tank, and the serpentine The inner cavity of the pipe, the inner cavity of the hot water pipe, the inner cavity of the circulation pipe and the water chamber jointly form a circulation heat exchange pipeline for supplying the water body in the water chamber to circulate.

Preferably, an insulating box is provided outside the water storage tank. An exhaust heat recovery pipe is provided between the hot water exchange tank and the water storage tank. The exhaust heat recovery pipe is provided with an anti-overheating component that controls cooling.

Preferably, the anti-overheating component includes a housing, a mounting barrel is provided at the bottom of the housing, a fastening ring is sleeved on the mounting barrel, the fastening ring is threadedly installed at the bottom of the housing, a pressure switch is provided inside the mounting barrel, and the mounting barrel is connected to the housing. There is a sealing ring between the bodies.

Preferably, the housing is provided with an air inlet channel and an air outlet channel. One end of the air outlet channel is provided with a channel, a snap ring is fixedly connected to the bottom of the channel, and a sealing assembly for opening and closing the pressure switch is slidably installed inside the channel.

Preferably, the sealing assembly includes a sealing plug, a spring is sleeved on the sealing plug, a rotating rod for adjusting the elastic strength of the spring is threaded on the top of the sealing plug, and a rotating handle is fixedly connected to the top of the rotating rod.

Preferably, the top of the sealing plug is provided with a sump and a sealing trough, the sump is used to collect residual condensed water, a sealing ring is provided inside the sealing groove, and the snap ring is snapped inside the sealing groove.

Preferably, a first tee joint is provided between the circulation pipe and the serpentine pipe, a cold water inlet pipe is fixedly connected to the remaining connection end of the first tee joint, and a water replenishing pipe is provided between the cold water inlet pipe and the circulation pipe. The water supply component is used to transport cold water to the hot water exchange tank for cooling.

Preferably, a plurality of fixing brackets for fixing hot water pipes are provided on the outer wall of the water storage tank. The inlet end of the hot water pipe is wound upward from the bottom of the water storage tank. The water storage tank is provided with a hot water outlet pipe.

Preferably, the water replenishing assembly includes a second tee joint and a third tee joint. The second tee joint and the third tee joint are respectively provided on the cold water inlet pipe and the circulation pipe. The second tee joint and the third tee joint are respectively arranged on the cold water inlet pipe and the circulation pipe. A fourth tee joint is connected between the tee joints, and a water inlet pipe is fixedly connected to the top of the fourth tee joint. The top of the water inlet pipe is connected to one side of the hot water exchange tank, and a water replenishing pump is provided on the water inlet pipe.

Preferably, solenoid valves are provided between the fourth three-way joint and the second three-way joint, the fourth three-way joint and the third three-way joint, and the first three-way joint and the second three-way joint.

The invention has the following beneficial effects:

When the invention is in use, when the water inside the serpentine tube is heated, it flows into the hot water pipe through the top of the serpentine tube, and the heat of the hot water is heated by the spirally wound hot water pipe to the outer wall of the water storage tank. After a long time, the water can be Increase the water temperature inside the water storage tank. Due to the setting of the insulating box, especially in winter, the heat loss of hot water exchanging heat inside the hot water pipe can be reduced. Through the setting of the hot water pipe, the water temperature inside the water storage tank can be increased. Moreover, the water temperature is more balanced and insulated than traditional ones, which can also improve the utilization rate of hot water;

In addition, through the settings of the anti-overheating component and the water replenishing component, when the vacuum heat collecting tube absorbs heat and causes the water temperature inside the hot water exchange tank to overheat, the pressure switch opens to control the work of the water replenishing pump, and the cold water inside the cold water inlet pipe or the water inside the water storage tank is It is pumped to the inside of the hot water exchange tank for cooling, which effectively reduces the temperature of the hot water exchange tank and prevents safety accidents caused by excessive temperature in the hot water exchange tank. The use of mechanical structures instead of electronic devices is more stable and accurate.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the solar water heater proposed by the present invention;

Figure 2 is a schematic cross-sectional structural diagram of the hot water exchange tank of the solar water heater proposed by the present invention;

Figure 3 is a schematic cross-sectional structural diagram of the heat exchange component of the solar water heater proposed by the present invention;

Figure 4 is a schematic structural diagram of the connection layout of the heat exchange component, cold water inlet pipe, serpentine tube and water replenishing component of the solar water heater proposed by the present invention;

Figure 5 is a schematic diagram of the overall structure of the overheating prevention component of the solar water heater proposed by the present invention;

Figure 6 is a schematic diagram of the overall explosion structure of the overheating prevention component of the solar water heater proposed by the present invention;

Figure 7 is a schematic cross-sectional structural diagram of the overall overheating prevention component of the solar water heater proposed by the present invention;

Figure 8 is a schematic cross-sectional structural diagram of the sealing assembly of the solar water heater proposed by the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments.

Example 1

Please refer to Figure 1-3. The solar water heater includes a hot water exchange tank 100, a serpentine tube 220 located in the hot water exchange tank 100, a water storage tank 202, and a hot water pipe 203 coiled around the outer wall of the water storage tank 202; water storage A water chamber for water storage is formed in the box 202. The inner chamber of the serpentine tube 220, the inner chamber of the hot water pipe 203, the inner chamber of the circulation pipe 212 and the water chamber jointly form a water supply chamber for circulating water. Thermal pipeline, in which the inlet and outlet pipes of the serpentine pipe 220 are in the same direction, and the outlet pipe is located above the inlet pipe. One end of the water storage tank 202 is connected with a hot water outlet pipe 205, and the hot water outlet pipe 205 is located at On the top of one end of the water storage tank 202, the shower water end is connected to the hot water outlet pipe 205, and a plurality of fixing brackets 204 for fixing the hot water pipes 203 are provided on the outer wall of the water storage tank 202;

An exhaust heat recovery pipe 230 is provided between the hot water exchange tank 100 and the water storage tank 202, and an overheating prevention component 240 for controlling cooling is provided on the exhaust heat recovery pipe 230;

When the present invention is in use, the heat transfer medium inside the vacuum heat collecting tube is heated and vaporized by absorbing heat through the vacuum heat collecting tube, carrying the heat and rising to the top condensation end. The steam exchanges heat with the water inside the water exchange tank 100 at the condensation end, and then condenses after releasing the heat. into a liquid, and flows back to the bottom heating end, and the cycle is repeated continuously. When the temperature of the water inside the hot water exchange tank 100 increases, it exchanges heat with the serpentine tube 220, and the cold water inside the water storage tank 202 re-enters the serpentine through the circulation tube 212. Circular heat exchange is performed inside the pipe 220. After the water inside the serpentine pipe 220 is heated, it flows into the hot water pipe 203 through the top of the serpentine pipe 220. The heat of the hot water is transferred to the outer wall of the water storage tank 202 through the spirally wound hot water pipe 203. Heating can increase the water temperature inside the water storage tank 202 after a long period of time. Due to the setting of the insulating box 201, especially in winter, the heat loss of hot water exchanging heat inside the hot water pipe 203 can be reduced. Through the setting of the hot water pipe 203 , which can not only increase the water temperature inside the water storage tank 202, and the water temperature is more balanced and insulated than the traditional one, but also improve the utilization rate of hot water.

Example 2

Please refer to Figure 4-8. The differences based on Embodiment 1 are:

The anti-overheating component 240 includes a shell 241. The shell 241 is provided with an air inlet channel 2411 and an air outlet channel 2412. The air inlet channel 2411 is provided with a connecting air channel at one end close to the air outlet channel 2412. The air outlet channel 2412 is provided with a channel 2413 at one end. The channel 2413 A snap ring 2414 is fixedly connected to the bottom, and a sealing assembly 244 for opening and closing the pressure switch 247 is slidably installed inside the channel 2413. The sealing assembly 244 includes a sealing plug 2441. The top of the sealing plug 2441 is provided with a water collection tank 2442 and a sealing groove 2443. The water collection tank 2442 It is used to collect residual condensed water. A sealing ring is provided inside the sealing groove 2443. The snap ring 2414 is clamped inside the sealing groove 2443. A spring 2444 is connected to the sealing plug 2441. The top thread of the sealing plug 2441 is provided with an adjustment spring 2444. The rotating rod 245 has elastic strength, and a rotating handle 246 is fixedly connected to the top of the rotating rod 245. When in use, the user turns the rotating handle 246 to drive the rotating rod 245 to rotate to adjust the height of the sealing plug 2441, thereby adjusting the elastic force of the spring 2444. In summer, In winter, the elastic force of the spring 2444 is reduced to facilitate water vapor to enter the pressure relief and sealing plug 2441. Press the pressure switch 247. In winter, the elastic force of the spring 2444 is increased, thereby increasing the air pressure inside the hot water exchange tank 100 and facilitating the internal pressure of the hot water exchange tank 100. When the temperature rises, a mounting barrel 242 is provided at the bottom of the housing 241. A fastening ring 243 is connected to the mounting barrel 242. The fastening ring 243 is threadedly installed at the bottom of the housing 241. A pressure switch 247 is provided inside the mounting barrel 242. The pressure switch 247 is used for To control the opening and closing of the water replenishing pump and the solenoid valve, a sealing ring is provided between the installation barrel 242 and the housing 241;

The water replenishing assembly 250 includes a second tee joint 251 and a third tee joint 252. The second tee joint 251 and the third tee joint 252 are respectively provided on the cold water inlet pipe 210 and the circulation pipe 212. The circulation pipe 212 is provided with Circulation pump, a water replenishing pump is provided on the water inlet pipe 254, a fourth three-way joint 253 is connected between the second three-way joint 251 and the third three-way joint 252, and a water inlet pipe 254 is fixedly connected to the top of the fourth three-way joint 253. , solenoid valves are provided between the fourth three-way joint 253 and the second three-way joint 251, the fourth three-way joint 253 and the third three-way joint 252, and the first three-way joint 211 and the second three-way joint 251, Among them, the fourth three-way joint 253 and the second three-way joint 251, the fourth three-way joint 253 and the third three-way joint 252, and the first three-way joint 211 and the second three-way joint 251 are at the internal temperature of the hot water exchange tank 100. Normally, it is in a closed state, and the top of the water inlet pipe 254 is connected to the side of the hot water exchange tank 100;

When the vacuum heat collector tube absorbs heat and causes the water temperature inside the hot water exchange tank 100 to overheat, the water inside the hot water exchange tank 100 evaporates and vaporizes and enters the inside of the anti-overheating component 240 through the exhaust heat recovery pipe 230 and enters the connecting channel through the air inlet channel 2411. The water inside the hot water exchange tank 100 evaporates and vaporizes to generate high pressure, and the water vapor pushes the sealing plug 2441 to move downward. At this time, the spring 2444 is stretched, and the snap ring 2414 is separated from the inside of the sealing groove 2443, so that the air inlet channel 2411, the connecting channel and the channel 2413 and The air outlet channel 2412 is connected, the sealing plug 2441 moves down and presses the pressure switch 247 to open, and at the same time, the solenoid valve between the fourth tee joint 253 and the third tee joint 252 and the first tee joint 211 and the second tee joint 251 Close, the solenoid valve between the fourth three-way joint 253 and the second three-way joint 251 is opened. At this time, the pressure switch 247 is turned on to control the water replenishing pump to pump the cold water inside the cold water inlet pipe 210 to the inside of the hot water exchange tank 100 for cooling. , and in this cycle, the water vapor entering the air outlet channel 2412 flows back to the water storage tank 202 through the exhaust heat recovery pipe 230. When the internal temperature of the hot water exchange tank 100 drops, the internal air pressure of the hot water exchange tank 100 decreases. At this time, the spring 2444 retracts to pull up the sealing plug 2441, and the sealing plug 2441 breaks away from pressing the pressure switch 247, causing the water replenishing pump and the solenoid valve between the fourth tee joint 253 and the second tee joint 251 to close, and the snap ring 2414 is re-locked. Connected inside the sealing groove 2443 to complete the sealing;

When the pressure switch 247 is in continuous operation for a long time, the pressure switch 247 controls the solenoid valve between the fourth three-way joint 253 and the third three-way joint 252 to open, and the fourth three-way joint 253 and the second three-way joint 251 open. The solenoid valve in the middle is closed, and the water inside the water storage tank 202 is pumped to the inside of the hot water exchange tank 100 for cooling, which effectively reduces the temperature of the hot water exchange tank 100 and prevents safety accidents caused by excessive temperature in the hot water exchange tank 100. Through the overheating prevention component 240 The setting eliminates the need to install a temperature sensor or water level sensor inside the hot water exchange tank 100 or the water storage tank 202, which reduces the use of electronic devices and improves the accuracy of the overheating prevention mechanism;

Through the setting of the water collecting tank 2442, part of the condensed water remaining inside the exhaust heat recovery pipe 230 and the air inlet channel 2411 can be collected. It can be cleaned by disassembling the installation barrel 242 and the sealing assembly 244, or it can be left alone, which is also convenient. Replace the internal sealing ring. When the condensate water level inside the overheating prevention component 240 is higher than the bottom of the connection channel, the water inside the hot water exchange tank 100 will evaporate and vaporize to generate high pressure next time, and the condensate water inside the overheating prevention component 240 can be discharged. It does not affect the operation of the anti-overheating component 240, and the discharged condensed water is sent to the inside of the water storage tank 202 through the exhaust heat recovery pipe 230, thereby improving the utilization rate of water.

The above are only preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above-mentioned embodiments. All technical solutions that fall under the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and modifications may be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of this template.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience. By describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, and be constructed and operated in a specific orientation, and therefore, is not to be construed as a limitation of the present invention. In addition, the terms "first" and "second" are for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, features defined by “first” and “second” may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more.

In the description of the present invention, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.

An embodiment of the present invention has been described in detail above, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the implementation scope of the present invention. All equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of the patent of the present invention.

Claims (10)

1. Solar water heater, characterized in that it includes a hot water exchange tank (100), a serpentine tube (220) located in the hot water exchange tank (100), a water storage tank (202), and a water storage tank (202) coiled around the outer wall of the water storage tank (202). The hot water pipe (203) at And the water chambers jointly form a circulation heat exchange pipeline for the water body in the water chamber to circulate. 2. The solar water heater according to claim 1, characterized in that: an insulating box (201) is provided outside the water storage tank (202), and an exhaust gas is provided between the hot water exchange tank (100) and the water storage tank (202). The heat recovery pipe (230) is provided with an anti-overheating component (240) for controlling cooling on the exhaust heat recovery pipe (230). 3. The solar water heater according to claim 2, characterized in that: the overheating prevention component (240) includes a housing (241), a mounting barrel (242) is provided at the bottom of the housing (241), and the mounting barrel (242) is covered with a sleeve. A fastening ring (243) is connected, and the fastening ring (243) is threadedly installed at the bottom of the housing (241). A pressure switch (247) is provided inside the installation barrel (242). The installation barrel (242) and the housing (241) There is a sealing ring between them. 4. The solar water heater according to claim 3, characterized in that: an air inlet channel (2411) and an air outlet channel (2412) are provided inside the housing (241), and a channel (2413) is provided at one end of the air outlet channel (2412). A snap ring (2414) is fixedly connected to the bottom of the channel (2413), and a sealing component (244) for opening and closing the pressure switch (247) is slidably installed inside the channel (2413). 5. The solar water heater according to claim 4, characterized in that: the sealing assembly (244) includes a sealing plug (2441), a spring (2444) is sleeved on the sealing plug (2441), and the top of the sealing plug (2441) is threaded. There is a rotating rod (245) for adjusting the elastic strength of the spring (2444), and a rotating handle (246) is fixedly connected to the top of the rotating rod (245). 6. The solar water heater according to claim 5, characterized in that: a water collecting tank (2442) and a sealing tank (2443) are provided on the top of the sealing plug (2441), and the water collecting tank (2442) is used to collect residual condensed water and seal A sealing ring is provided inside the groove (2443), and the snap ring (2414) is clamped inside the sealing groove (2443). 7. The solar water heater according to claim 1, characterized in that: a first three-way joint (211) is provided at the circulation pipe (212) and the serpentine pipe (220), and the first three-way joint (211) A cold water inlet pipe (210) is fixedly connected to the remaining connection end of The hot water tank (100) performs cooling. 8. The solar water heater according to claim 1, characterized in that: a plurality of fixing brackets (204) for fixing the hot water pipes (203) are provided on the outer wall of the water storage tank (202). The hot water pipes (203) The water inlet end is wound upward from the bottom of the water storage tank (202), and a hot water outlet pipe (205) is connected to the water storage tank (202). 9. The solar water heater according to claim 1, characterized in that: the water replenishing assembly (250) includes a second tee joint (251) and a third tee joint (252), and the second tee joint (251) and the third tee joint (252). Three tee joints (252) are respectively provided on the cold water inlet pipe (210) and the circulation pipe (212). A fourth tee joint (252) is connected between the second tee joint (251) and the third tee joint (252). The tee joint (253), the top of the fourth tee joint (253) is fixedly connected with a water inlet pipe (254), the top of the water inlet pipe (254) is connected to the side of the hot water exchange tank (100), and the water inlet pipe (254) is provided with There is a water replenishing pump. 10. The solar water heater according to claim 9, characterized in that: the fourth three-way joint (253) and the second three-way joint (251), the fourth three-way joint (253) and the third three-way joint (252) ) and a solenoid valve is provided between the first three-way joint (211) and the second three-way joint (251).