Double-container water tank heat exchange structure and production process

Abstract

The invention provides a double-container water tank heat exchange structure and a production process. The double-container water tank heat exchange structure comprises an outer container, an inner container is arranged in the outer container, a heat conduction oil conveying assembly is connected to the outer container, a fixing pipe penetrating through the inner container and a second fixing ring is rotationally connected to the outer container, and a heat insulation disc is fixedly connected to the fixing pipe. Through cooperative action of core components such as the fixing pipe, the heat insulation disc and the air bag ring, heat insulation subareas are constructed or removed in the space of the single container according to needs, so that the single container can be intelligently and seamlessly switched between two modes of high-efficiency quick-heating small water amount and uniform heating large capacity; the most fatal problems that when only a small amount of water in the upper container is heated, a large amount of cold water in the lower container rapidly absorbs heat of the upper container through a middle partition plate, so that the instant heating function is similarly virtualized, the water outlet temperature is sharply reduced within several seconds, the user experience is extremely poor, and the energy utilization rate is low are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water heaters, in particular to a double-tank water tank heat exchange structure and production process. BACKGROUND

[0002] In the technical field of water heaters, in order to balance the rapid preparation of a small amount of hot water and meet the demand for a large amount of hot water, a double-tank water tank structure emerges as the times require; However, the existing double-tank water tank generally adopts a design scheme of physically separating and statically connecting the upper tank and the lower tank, which has exposed a fundamental technical defect in actual use: when the user opens the rapid heating mode and only needs a small amount of hot water, the system only heats the water in the upper tank, but due to the metal partition plate or connecting pipe between the upper tank and the lower tank forming an efficient heat conduction path, the heat of the upper tank is quickly absorbed by the large amount of cold water in the lower tank, resulting in a serious "cold-hot short circuit" effect, which causes the water temperature to drop sharply in a very short time, the rapid heating function is useless, and the user experience is poor. At the same time, due to the fixed volume of the upper tank and the lower tank, when a small amount of hot water is needed, the water in the entire tank needs to be heated, which takes a long time and also wastes energy. When the user needs a large amount of hot water and switches to the whole-tank mode, the heating efficiency of the entire water tank is equivalent to that of the traditional single-tank, and the double-tank structure does not bring corresponding performance advantages in space and cost, but increases the flow resistance, heat loss and potential failure points due to the complex partition plate, valve and pipeline inside. In addition, when the inner tank of the existing double-tank structure leaks, the leaked water will accumulate in the interlayer and cannot be discharged, which will corrode the outer tank and the insulation layer in the long run, and the fault is hidden and difficult to detect. SUMMARY

[0003] In order to solve the problems existing in the prior art, the present application aims to provide a double-tank water tank heat exchange structure and production process.

[0004] The double-tank water tank heat exchange structure provided by the present application comprises an outer tank, an inner tank is arranged in the outer tank, a water outlet pipe penetrating the outer tank is fixed at the top of the inner tank, and a water inlet pipe and a sewage pipe penetrating the outer tank are sequentially fixed at the bottom of the inner tank; The inner tank is sequentially fixed with a first fixing ring, a second fixing ring and a third fixing ring from top to bottom, a first spiral flow guide plate fixed with the outer tank and the inner tank is arranged between the first fixing ring and the second fixing ring, a second spiral flow guide plate fixed with the outer tank and the inner tank is arranged between the second fixing ring and the third fixing ring, and a heat-conducting oil conveying assembly is connected to the outer tank; The second fixed ring is provided with a through hole, the outer barrel is rotatably connected with a fixed tube penetrating the inner barrel and the second fixed ring, the fixed tube on the left side is provided with a plurality of through grooves, the fixed tube on the right side is connected with a heat conducting oil conveying assembly, the fixed tube is fixedly connected with a heat insulation disc, the heat insulation disc is fixedly connected with a heat transfer sheet, the fixed tube is fixedly connected with a first plugging ring acting on the through hole, the outer barrel is fixedly connected with a DD motor, and the rotating part of the DD motor is fixedly connected with the fixed tube.

[0005] As a further improvement of the present application, the inner barrel is provided with a heat insulation ring.

[0006] As a further improvement of the present application, the fixed tube on the left side is fixedly connected with a T-shaped tube, and the heat insulation disc is fixedly connected with an air bag ring in communication with the T-shaped tube.

[0007] As a further improvement of the present application, the air bag ring is made of rubber or polymer material with high strength, high elasticity and good heat insulation performance, so as to ensure wear resistance, pressure resistance and heat resistance.

[0008] As a further improvement of the present application, the surface of the second fixed ring is configured as a water collecting structure with the area where the through hole is located as the lowest point, so that liquid can be collected from other areas of the second fixed ring to the through hole and discharged better.

[0009] As a further improvement of the present application, the heat conducting oil conveying assembly comprises a pump machine fixedly connected with the outer barrel, and a liquid inlet pipe in communication with the liquid inlet pipe opening of the pump machine, one end of the liquid inlet pipe is connected with the third fixed ring, the outer barrel is fixedly connected with a heat conducting oil heating box, the liquid outlet opening of the pump machine is fixedly connected with an L-shaped pipe connected with the heat conducting oil heating box, the fixed tube on the right side is in communication with the liquid inlet pipe opening of the pump machine, and the heat conducting oil heating box is fixedly connected with a liquid outlet pipe connected with the first fixed ring.

[0010] As a further improvement of the present application, a plurality of spiral parts are fixedly connected in the water inlet pipe.

[0011] As a further improvement of the present application, a plurality of storage plates are inlaid on the inner barrel, and the storage plates are provided with high latent heat phase change materials.

[0012] As a further improvement of the present application, a humidity sensor and a connecting pipe are sequentially fixedly connected at the bottom of the outer barrel, the connecting pipe is provided with a bolt, and the bolt is fixedly connected with a second plugging ring.

[0013] As a further improvement of the present application, a double-barrel water tank production process comprises the following specific steps: Firstly, the metal plate is cut, rolled and welded to prepare the barrel and head blanks of the outer and inner barrels, the inner barrel is surface treated, and a heat insulation ring is welded to the specified position of the outer wall of the inner barrel, then a plurality of storage plates with internal pre-set cavities are processed by stamping or casting process, high latent heat phase change material is poured into the cavities and sealed, then the storage plates are fixed on the outer wall of the inner barrel by a special inlay process (such as brazing or gluing), meanwhile, the first, second and third fixed rings are processed and welded to the outer wall of the inner barrel in sequence; S2: Then, the pre-formed metal strip is wound into the first and second spiral flow guide plates, the first spiral flow guide plate is welded and installed in the annular space between the first and second fixed rings, the second spiral flow guide plate is welded and installed in the annular space between the second and third fixed rings, the construction of the inner spiral flow channel skeleton is completed, then the first sealing ring is pre-placed on the through hole of the second fixed ring which has been processed with a water collecting structure surface, it is explained that the heads of the outer and inner barrels are not welded at this time, the heat insulation disc, heat transfer sheet, T-shaped tube and air bag ring are put into the inner barrel cavity as a functional component through the upper opening, for easy insertion, the T-shaped tube can be temporarily contracted; S3: Then, the inner barrel and the outer barrel are coaxially positioned and assembled, and the annular interlayer space is formed between them. In this process, the outer edges of the first and second spiral flow guide plates are fixed with the inner wall of the outer barrel, thereby forming a complete continuous spiral descending flow channel in the interlayer. Then, the T-shaped tube pre-installed in the inner barrel is stretched back to its original position, so that it passes through the heat insulation ring, the second fixed ring, the first sealing ring and the corresponding holes pre-formed on the outer barrel in sequence.

[0014] S4: Then, the fixed tube assembly is installed through the corresponding holes of the outer barrel, the heat insulation ring, the second fixed ring, the first sealing ring and the heat insulation disc, and is fixed with the heat insulation disc to ensure smooth rotation. The DD motor is installed on the outer wall of the outer barrel, and the rotating part is connected with the fixed tube. Then the pump is fixed on the outer barrel, and the inlet pipe, L-shaped pipe and outlet pipe are connected, and the right fixed tube is connected with the inlet of the pump to form a complete heat conducting oil closed loop circulation circuit. At the same time, a humidity sensor and a connecting pipe with a bolt and a second sealing ring are installed at the bottom of the outer barrel.

[0015] S5: Finally, the heads of the inner and outer barrels are welded and sealed. After the main body is sealed, the water outlet pipe, the water inlet pipe with a plurality of spiral parts and the sewage pipe are respectively welded and connected with the top and bottom of the inner barrel, and are ensured to penetrate the outer barrel, thereby completing the assembly and production of the whole double-barrel heat exchanger structure.

[0016] Compared with the prior art, the present application has the following advantages: A. The present application greatly prolongs the flow path and heat exchange time of the heat conducting oil by the design of the first spiral guide plate and the second spiral guide plate, forces the high-temperature oil to flow slowly and uniformly along the spiral track through the entire outer wall of the inner container, thereby realizing the full-surface and high-uniformity heat transfer to the inner container, ensuring that the heat in the heat conducting oil is fully released, which fundamentally solves the inherent defects of local overheating, uneven heat transfer and easy scaling of the existing technology, and at the same time, physically isolates the heating system from the water storage system, improving safety and reliability.

[0017] B. The present application also forces the air to rapidly expand the air bag ring, so that its outer surface closely fits the entire circumferential gap between the heat insulation disc edge and the inner wall of the inner container, thereby avoiding the situation that if there is a gap between the heat insulation disc edge and the inner wall of the inner container when heating the water above the heat insulation disc, the water above and below the heat insulation disc will not be separated, so that the heat of the water above the heat insulation disc will be transferred to the water below, thereby causing the water above to heat slowly.

[0018] C. The present application also completely isolates the cold water at the lower part from the dynamic barrier formed by the heat insulation disc and the air bag ring, so that the cold energy cannot be transmitted upward, fundamentally eliminating the cold-heat short circuit, ensuring the purity and stability of the temperature of the hot water above, and realizing true rapid heating.

[0019] D. The present application also realizes the construction or removal of heat insulation partitions in the single-container space as needed through the coordinated action of the above-mentioned core components such as the fixed tube, DD motor, heat insulation disc and air bag ring, enabling the single-container to seamlessly switch between the "high-efficiency rapid heating small water volume" and "uniform heating large capacity" modes, solving the most fatal problem of the existing upper and lower double-container water tank: when only heating a small amount of water in the upper container, the large amount of cold water in the lower container will quickly absorb the heat from the upper container through the intermediate partition, causing the so-called rapid heating function to be virtually useless, and the water temperature will drop sharply within a few seconds, resulting in a poor user experience. At the same time, due to the fixed volume of the upper and lower containers, when a small amount of hot water is needed, the entire water in the container needs to be heated, which takes a long time and also causes waste of energy.

[0020] E. The present application also controls the DD motor to drive the fixed tube to rotate slowly and reciprocally at a small amplitude intermittently during the whole-container heating process, so as to make the heat insulation disc rotate slowly and disturb the water in the inner container gently, so as to further promote temperature balance and improve overall energy efficiency.

[0021] F. The application also absorbs and stores (melts) the excess heat by high latent heat phase change materials during the heating stage, so that when a large amount of water is used, the inner tank water temperature drops, the high latent heat phase change material quickly solidifies, releases the stored latent heat, quickly replenishes the inner tank, when the heating or water use is stopped, the high latent heat phase change material solidifies and releases heat, continuously and slowly replenishes heat to the water body, significantly prolongs the heat preservation time, realizes the purpose of energy saving and constant temperature, and solves the user's pain points of long waiting time for heating and fast water temperature drop when not in use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the double-tank water tank heat exchange structure described in the application; Figure 2 is a first partial cross-sectional view of the double-tank water tank heat exchange structure described in the application; Figure 3 is a schematic diagram of the heat conducting oil delivery assembly structure of the double-tank water tank heat exchange structure described in the application; Figure 4 is a partial cross-sectional view of the 2-inner tank and 11-heat insulation ring of the double-tank water tank heat exchange structure described in the application; Figure 5 is a second partial cross-sectional view of the double-tank water tank heat exchange structure described in the application; Figure 6 is an enlarged view of A of the double-tank water tank heat exchange structure described in the application; Figure 7 is a third partial cross-sectional view of the double-tank water tank heat exchange structure described in the application; Figure 8 is a fourth partial cross-sectional view of the double-tank water tank heat exchange structure described in the application; Figure 9 is an enlarged view of B of the double-tank water tank heat exchange structure described in the application.

[0023] Explanation of reference signs: 1-outer tank, 2-inner tank, 3-outlet pipe, 4-inlet pipe, 5-drain pipe, 6-first fixed ring, 7-second fixed ring, 71-through hole, 8-third fixed ring, 9-first spiral flow guide plate, 10-second spiral flow guide plate, 11-heat insulation ring, 12-fixed pipe, 12a-through slot, 13-heat insulation disc, 14-heat transfer sheet, 15-first plugging ring, 16-DD motor, 17-T-shaped pipe, 18-air bag ring, 21-pump, 22-liquid inlet pipe, 23-L-shaped pipe, 24-heat conducting oil heating tank, 25-liquid outlet pipe, 31-storage plate, 32-high latent heat phase change material, 41-humidity sensor, 42-connection pipe, 43-bolt, 44-second plugging ring, 51-spiral part. DETAILED DESCRIPTION

[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0025] Embodiment 1 A double-tank water tank heat exchange structure, as shown in Figures 1-7 , Figure 9 , comprises an outer tank 1, an inner tank 2 is arranged in the outer tank 1, a water outlet pipe 3 penetrating the outer tank 1 is fixed at the top of the inner tank 2, and a water inlet pipe 4 and a sewage pipe 5 penetrating the outer tank 1 are sequentially fixed at the bottom of the inner tank 2; The inner tank 2 is sequentially fixed with a first fixing ring 6, a second fixing ring 7 and a third fixing ring 8 from top to bottom, a first spiral guide plate 9 fixed with the outer tank 1 and the inner tank 2 is arranged between the first fixing ring 6 and the second fixing ring 7, a second spiral guide plate 10 fixed with the outer tank 1 and the inner tank 2 is arranged between the second fixing ring 7 and the third fixing ring 8, and a heat-conducting oil conveying assembly is connected to the outer tank 1; A through hole 71 is formed in the second fixing ring 7, a fixed pipe 12 penetrating the inner tank 2 and the second fixing ring 7 is rotatably connected to the outer tank 1, a plurality of through slots 12a are formed in the fixed pipe 12 on the left, the fixed pipe 12 on the right is connected to the heat-conducting oil conveying assembly, a heat insulation disc 13 is fixed to the fixed pipe 12, a heat transfer fin 14 is fixed to the heat insulation disc 13, a first plugging ring 5 acting on the through hole 71 is fixed to the fixed pipe 12, a DD motor 16 is fixed to the outer tank 1, and a rotating part of the DD motor 16 is fixed to the fixed pipe 12.

[0026] A heat insulation ring 11 is arranged on the inner tank 2.

[0027] A T-shaped pipe 17 is fixed in the fixed pipe 12 on the left, and an air bag ring 18 in communication with the T-shaped pipe 17 is fixed to the heat insulation disc 13.

[0028] The air bag ring 18 is made of rubber or polymer material with high strength, high elasticity and good heat insulation performance, so as to ensure wear resistance, pressure resistance and heat resistance.

[0029] The surface structure of the second fixing ring 7 is a water collecting structure with the area where the through hole 71 is located as the lowest point, so that the liquid can be collected from other areas of the second fixing ring 7 to the through hole 71 and discharged better.

[0030] The heat conducting oil conveying assembly comprises a pump 21 fixedly connected with the outer container 1, and a liquid inlet pipe 22 connected with the liquid inlet pipe opening of the pump 21, one end of the liquid inlet pipe 22 being connected with the third fixed ring 8, the outer container 1 being fixedly connected with a heat conducting oil heating tank 24, the liquid outlet opening of the pump 21 being fixedly connected with an L-shaped pipe 23 connected with the heat conducting oil heating tank 24, the right fixed pipe 12 being connected with the liquid inlet pipe opening of the pump 21, and the heat conducting oil heating tank 24 being fixedly connected with a liquid outlet pipe 25 connected with the first fixed ring 6.

[0031] A plurality of spiral members 51 are fixedly connected in the water inlet pipe 4.

[0032] In use, first, an electromagnetic valve is arranged in each of the right fixed pipe 12 and the liquid inlet pipe 22, the heat insulation disc 13 is initially in a vertical state (parallel to the inner wall of the inner container 2), as shown in Figure 5 The T-shaped pipe 17 is connected with the micro pump; Then, when a user needs a large amount of hot water (whole container mode), the system enters an initial or heating mode, the electromagnetic valve in the right fixed pipe 12 is closed, and the electromagnetic valve in the liquid inlet pipe 22 is opened, and then the pump 21 starts to work, and the heat conducting oil which has completed heat exchange and has a low temperature is pumped out from the liquid inlet pipe 22 at the third fixed ring 8 located at the lower part of the inner container 2, and then the low temperature heat conducting oil is pumped into the heat conducting oil heating tank 24 by the pump 21 through the L-shaped pipe 23 for centralized and efficient heating, and the high temperature heat conducting oil at the set temperature is then conveyed to the first fixed ring 6 located at the top end of the inner container 2 through the liquid outlet pipe 25, and at the same time, the high temperature heat conducting oil enters the annular space between the outer container 1 and the inner container 2 from the first fixed ring 6, in the process, since the annular space is divided into continuous, top-down spiral downward flow channels by the first spiral flow guide plate 9 and the second spiral flow guide plate 10, the heat conducting oil will first contact the first spiral flow guide plate 9 and flow downward along the first spiral flow guide plate 9 to the surface of the second fixed ring 7, and then the heat conducting oil will flow to the second spiral flow guide plate 10 through the through holes 71 on the second fixed ring 7 and continue to flow downward along the second spiral flow guide plate 10 to the surface of the third fixed ring 8, and in the process of the flow of the heat conducting oil, the flow path and heat exchange time of the heat conducting oil are greatly prolonged by the design of the first spiral flow guide plate 9 and the second spiral flow guide plate 10, and the high temperature oil body is forced to flow slowly and uniformly along the spiral track through the entire outer wall surface of the inner container 2, thereby realizing the full surface and high uniformity heat transfer of the heat to the inner container 2, and ensuring that the heat in the heat conducting oil is fully released, which fundamentally solves the inherent defects of the existing technology, such as local overheating, uneven heat transfer and easy scaling of the built-in coil, and at the same time, the heating system and the water storage system are physically isolated, and the safety and reliability are improved; Then, the heat transfer oil that has completed heat exchange and temperature reduction will be pumped away again by pump 21 through inlet pipe 22, forming a closed loop of "heating box → spiral jacket → heating box", thereby continuously providing heat source for inner tank 2. When a user needs to quickly obtain a small amount of hot water (i.e., quick-heating mode), the solenoid valve in the right-side fixed pipe 12 will open, while the solenoid valve in the inlet pipe 22 will close. Using a left-to-right viewing angle as a reference, the DD motor 16 simultaneously controls the fixed pipe 12 to rotate 90 degrees counterclockwise. The heat insulation plate 13, heat transfer plate 14, first sealing ring 15, T-tube 17, and airbag ring 18 rotate synchronously with the fixed pipe 12, thus changing the heat insulation plate 13 from a vertical to a horizontal position. Figure 7 As shown, the through hole 71 will also be blocked by the sealing ring 15. Then, the micro pump is controlled to deliver air to the airbag ring 18 through the T-shaped tube 17. The air will then force the airbag ring 18 to expand rapidly, so that its outer surface is tightly attached to the entire circumferential gap between the edge of the heat insulation plate 13 and the inner wall of the inner liner 2. This avoids the situation where, when heating the water above the heat insulation plate 13, if there is a gap between the edge of the heat insulation plate 13 and the inner wall of the inner liner 2, the water above and below the heat insulation plate 13 will not be separated. This would cause the heat of the water above the heat insulation plate 13 to be transferred to the water below, resulting in slow heating of the water above. At the same time, a complete dynamic heat insulation barrier composed of the rigid heat insulation plate 13 and the flexible airbag ring 18 is instantly formed in the inner liner 2, which intelligently divides the inner liner 2 into two completely independent chambers in the vertical direction. Next, when the high-temperature heat transfer oil heats the water above the barrier, the flow path of the heat transfer oil is as follows: the heat transfer oil first flows downward along the first spiral guide plate 9 to the surface of the second fixed ring 7, then enters the sealing ring 15, and then enters the left fixed pipe 12 through the through groove 12a, and flows into the cavity of the heat insulation plate 13, so that the cavity of the heat insulation plate 13 is filled with heat transfer oil. During this process, the heat in the heat transfer oil will be transferred to the water above the barrier through the heat transfer plate 14, thereby further heating the water. Then the heat transfer oil will be pumped back to the heat transfer oil heating box 24 by the pump 21 through the right fixed pipe 12, thus forming a cycle. This allows for concentrated heating of a small amount of water above the barrier. During the heating process, due to the setting of the heat insulation ring 11, when the high-temperature heat-conducting oil transfers heat to the outer wall of the inner tank 2 in the area between the first fixed ring 6 and the second fixed ring 7, the heat absorbed by the oil will not be transferred to the inner tank 2 in the area between the second fixed ring 7 and the third fixed ring 8. This allows the heat to be more concentrated in heating the water above the barrier. At the same time, since the lower cold water is completely isolated by the dynamic barrier formed by the heat insulation plate 13 and the airbag ring 18, its coldness cannot be conducted upwards, fundamentally eliminating the short circuit between hot and cold, ensuring the purity and stability of the hot water temperature above, and achieving true rapid heating. Thus, through the coordinated action of the core components such as the fixed pipe 12, DD motor 16, heat insulation plate 13, and airbag ring 18, the heat insulation partition can be built or removed as needed within the single tank space. This allows the single tank to intelligently and seamlessly switch between two modes: "high-efficiency rapid heating of small water volume" and "uniform heating of large capacity". This solves the most fatal problem of existing upper and lower dual-tank water tanks: when only a small amount of water in the upper tank is heated, the huge amount of cold water in the lower tank will quickly absorb the heat from the upper tank through the middle partition, rendering the so-called rapid heating function useless. The water temperature drops sharply within a few seconds, resulting in a very poor user experience. At the same time, since the upper and lower tanks have fixed volumes, when a small amount of hot water is needed, the water in the entire tank needs to be heated, which takes a long time and also wastes energy. Then, when the rapid heating water is finished, or when it is necessary to switch back to the whole tank mode, the airbag ring 18 first deflates and contracts, detaching from the contact with the tank wall. Then, the DD motor 16 drives the fixed tube 12 to rotate clockwise to reset. During this process, the fixed tube 12 will drive the heat insulation plate 13 and the parts connected to it to reset. The dynamic barrier completely disappears, and the inner tank 2 returns to a complete large-capacity single tank. The system can then seamlessly switch back to the aforementioned "whole tank heating mode" to meet the user's demand for large amounts of water. Meanwhile, during the whole-tank heating process, in order to optimize the temperature uniformity inside the inner tank 2, the DD motor 16 can be controlled to intermittently drive the fixed tube 12 to rotate back and forth at a small amplitude, so that the heat insulation plate 13 rotates slowly, gently disturbing the water in the inner tank 2, so as to further promote temperature balance and improve overall energy efficiency. At the same time, when water is delivered to the inner tank 2 through the water inlet pipe 4, the spiral part 51 allows the water to enter the inner tank 2 more diffusely, thereby further producing a gentle disturbance effect on the heated water in the inner tank 2. It should be noted that when it is necessary to clean and drain the inner liner 2, the sewage in the inner liner 2 can be discharged through the drain pipe 5.

[0033] Example 2 Based on Example 1, such as Figures 8-9 As shown, the inner liner 2 is inlaid with multiple storage plates 31, and the storage plates 31 are provided with high latent heat phase change material 32.

[0034] A humidity sensor 41 and a connecting pipe 42 are sequentially fixed to the bottom of the outer liner 1. A bolt 43 is installed inside the connecting pipe 42, and a second sealing ring 44 is fixed to the bolt 43.

[0035] It should be noted that in the above heating stage, the excess heat is absorbed and stored (melting) by the high latent heat phase change material 32, so that when a large amount of water is used, the water temperature in the inner container 2 drops, the high latent heat phase change material 32 solidifies rapidly, releases the stored latent heat, and quickly replenishes the inner container 2. When heating or using water is stopped, the high latent heat phase change material 32 releases heat when it solidifies, continuously and slowly replenishing heat to the water body, significantly prolonging the heat preservation time, achieving the purpose of energy saving and constant temperature, and solving the user's pain points of long waiting time for heating and fast water temperature drop when not in use. At the same time, the humidity in the interlayer space can be monitored in real time by the humidity sensor 41. Once water enters the bottom of the interlayer due to leakage of the inner container 2, the humidity sensor 41 will immediately alarm, so that the user can find the problem in the first time, avoid the user using the leaking inner container 2 for a long time, and cause continuous waste of energy and potential structural damage. When it is necessary to drain the water at the bottom of the outer container 1, the user only needs to unscrew the bolt 43 and the second sealing ring 44 from the connecting pipe 42, so that the water can be discharged through the connecting pipe 42 in time, thereby avoiding the problem of long-term soaking of the outer container 1 and the insulation layer, resulting in internal corrosion of the outer container 1 and failure of the insulation material.

[0036] A double-tank water tank production process, the specific steps are as follows: First, the metal plate is cut, rolled and welded to prepare the cylinder and head blanks of the outer container 1 and the inner container 2. The inner container 2 cylinder is surface treated, and the heat insulation ring 11 is welded and fixed at the specified position on the outer wall. Then, a plurality of storage plates 31 with internal pre-cavity are processed by stamping or casting process, high latent heat phase change material 32 is poured into the cavity and sealed, and then the storage plates 31 are fixed on the outer wall of the inner container 2 by special inlay process (such as brazing or gluing). At the same time, the first fixed ring 6, the second fixed ring 7 and the third fixed ring 8 are processed respectively, and they are welded and fixed on the outer wall of the inner container 2 in turn; S2: Then, the pre-formed metal strip is wound into the first spiral flow guide plate 9 and the second spiral flow guide plate 10. The first spiral flow guide plate 9 is welded and installed in the annular space between the first fixed ring 6 and the second fixed ring 7, and the second spiral flow guide plate 10 is welded and installed in the annular space between the second fixed ring 7 and the third fixed ring 8, to complete the construction of the interlayer spiral flow channel skeleton. Subsequently, the first sealing ring 15 is pre-placed on the through hole 71 of the second fixed ring 7 which has been processed with a water collecting structure surface. It is explained here that at this time, the heads of the outer container 1 and the inner container 2 are not welded. The heat insulation disc 13, the heat transfer sheet 14, the T-shaped tube 17 and the air bag ring 18 are assembled as a functional component, and then put into the specified position in the cavity of the inner container 2 through the upper opening. In order to facilitate the placement, the T-shaped tube 17 can be temporarily shrunk. S3: Then, the completed pre-loaded inner tank 2 and the outer tank 1 are coaxially positioned and assembled, so as to form an annular interlayer space therebetween. In this process, the outer edges of the first spiral guide plate 9 and the second spiral guide plate 10 are fixed to the inner wall of the outer tank 1 at the same time, so as to form a complete continuous spiral downward flow channel in the interlayer. Then, the T-shaped pipe 17 pre-positioned in the inner tank 2 is stretched and reset, so as to sequentially pass through the heat insulation ring 11, the second fixed ring 7, the first blocking ring 15, and the corresponding holes pre-formed on the outer tank 1. S4: Subsequently, the fixed pipe 12 assembly is installed through the corresponding holes of the outer tank 1, the heat insulation ring 11, the second fixed ring 7, the first blocking ring 15, and the heat insulation disc 13, and is fixed to the heat insulation disc 13 to ensure smooth rotation. The DD motor 16 is installed on the outer wall of the outer tank 1, and the rotating part thereof is drivingly connected with the fixed pipe 12. Then, the pump 21 is fixed to the outer tank 1, and the inlet pipe 22, the L-shaped pipe 23, and the outlet pipe 25 are connected. The fixed pipe 12 on the right side is communicated with the inlet of the pump 21 to form a complete heat conducting oil closed loop circulation circuit. At the same time, the humidity sensor 41 and the connecting pipe 42 with the bolt 43 and the second blocking ring 44 are installed at the bottom of the outer tank 1. S5: Finally, the heads of the inner tank 2 and the outer tank 1 are welded and sealed. After the main body is packaged, the water outlet pipe 3, the water inlet pipe 4 with a plurality of spiral members 51 fixed inside, and the sewage pipe 5 are welded and connected to the top and bottom of the inner tank 2 respectively, and are ensured to pass through the outer tank 1 to be led out, so as to complete the assembly and production of the entire double-tank water tank heat exchange structure.

[0037] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, horizontal", and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without being contrary, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0038] For those skilled in the art, various corresponding changes and modifications can be made to the above-described technical solutions and concepts, and all these changes and modifications should belong to the protection scope of the claims of the present application.

Claims

1. A dual-tank heat exchange structure, comprising an outer tank (1), characterized in that, The outer liner (1) is provided with an inner liner (2). The top of the inner liner (2) is fixedly connected to a water outlet pipe (3) that penetrates the outer liner (1). The bottom of the inner liner (2) is sequentially fixedly connected to a water inlet pipe (4) that penetrates the outer liner (1) and a sewage pipe (5). The inner liner (2) is fixedly connected to a first fixing ring (6), a second fixing ring (7) and a third fixing ring (8) from top to bottom. A first spiral guide plate (9) is provided between the first fixing ring (6) and the second fixing ring (7) and is fixedly connected to the outer liner (1) and the inner liner (2). A second spiral guide plate (10) is provided between the second fixing ring (7) and the third fixing ring (8) and is fixedly connected to the outer liner (1) and the inner liner (2). A heat transfer oil conveying assembly is connected to the outer liner (1). The second fixing ring (7) has a through hole (71). The outer liner (1) is rotatably connected to a fixing pipe (12) that passes through the inner liner (2) and the second fixing ring (7). The left fixing pipe (12) has multiple through slots (12a). The right fixing pipe (12) is connected to the heat transfer oil conveying assembly. The fixing pipe (12) is fixed with a heat insulation plate (13). The heat insulation plate (13) is fixed with a heat transfer plate (14). The fixing pipe (12) is fixed with a first sealing ring (15) that acts on the through hole (71). The outer liner (1) is fixed with a DD motor (16). The rotating part of the DD motor (16) is fixed with the fixing pipe (12).

2. The dual-tank heat exchange structure according to claim 1, characterized in that, The inner liner (2) is provided with a heat insulation ring (11).

3. The dual-tank heat exchange structure according to claim 1, characterized in that, A T-shaped tube (17) is fixedly connected inside the fixed tube (12) on the left, and an airbag ring (18) connected to the T-shaped tube (17) is fixedly connected to the heat insulation plate (13).

4. The dual-tank heat exchange structure according to claim 3, characterized in that, The airbag ring (18) is made of high-strength, high-elasticity and heat-insulating rubber or polymer material to ensure wear resistance, pressure resistance and heat resistance.

5. The dual-tank heat exchange structure according to claim 1, characterized in that, The surface structure of the second fixing ring (7) is a water collection structure with the area where the through hole (71) is located as the lowest point, so that liquid can be collected from other areas of the second fixing ring (7) to the through hole (71) and discharged better.

6. The dual-tank heat exchange structure according to claim 1, characterized in that, The heat transfer oil delivery assembly includes a pump (21) fixedly connected to the outer liner (1) and an inlet pipe (22) connected to the inlet port of the pump (21). One end of the inlet pipe (22) is connected to the third fixing ring (8). A heat transfer oil heating box (24) is fixedly connected to the outer liner (1). An L-shaped pipe (23) connected to the heat transfer oil heating box (24) is fixedly connected to the outlet of the pump (21). The right-side fixing pipe (12) is connected to the inlet port of the pump (21). An outlet pipe (25) connected to the first fixing ring (6) is fixedly connected to the heat transfer oil heating box (24).

7. The dual-tank heat exchange structure according to claim 1, characterized in that, Multiple spiral components (51) are fixed inside the water inlet pipe (4).

8. The dual-tank heat exchange structure according to claim 1, characterized in that, The inner liner (2) is inlaid with multiple storage plates (31), and the storage plates (31) are provided with high latent heat phase change material (32).

9. A dual-tank heat exchange structure according to claim 1, characterized in that, A humidity sensor (41) and a connecting pipe (42) are sequentially fixed to the bottom of the outer shell (1). A bolt (43) is provided inside the connecting pipe (42), and a second sealing ring (44) is fixed to the bolt (43).

10. A manufacturing process for a dual-tank water tank, using the dual-tank water tank heat exchange structure described in claim 9, characterized in that... The specific steps are as follows: S1: First, the metal sheet is cut, rolled and welded to prepare the outer liner (1) and inner liner (2) cylinder and head blank respectively. The inner liner (2) cylinder is surface treated and the heat insulation ring (11) is welded and fixed at the designated position on its outer wall. Then, multiple storage plates (31) with internal pre-set cavities are processed by stamping or casting process. High latent heat phase change material (32) is poured into the cavity and sealed. Then, these storage plates (31) are fixed on the outer wall of the inner liner (2) by special inlay process (such as brazing or gluing). At the same time, the first fixing ring (6), the second fixing ring (7) and the third fixing ring (8) are processed respectively and welded and fixed on the outer wall of the inner liner (2) in sequence. S2: Next, the pre-formed metal strip is wound into a first spiral guide plate (9) and a second spiral guide plate (10). The first spiral guide plate (9) is welded and installed in the annular space between the first fixed ring (6) and the second fixed ring (7). The second spiral guide plate (10) is welded and installed in the annular space between the second fixed ring (7) and the third fixed ring (8). The construction of the spiral flow channel skeleton in the interlayer is completed. Then, the first sealing ring (15) is placed in advance on the through hole (71) of the second fixed ring (7) which has been processed with a water collection structure surface. Here it is noted that at this time, the end caps of the outer liner (1) and the inner liner (2) are not welded. The assembled heat insulation plate (13), heat transfer plate (14), T-tube (17) and airbag ring (18) are placed as a functional component into the designated position in the cavity of the inner liner (2) through the upper opening. To facilitate placement, the T-tube (17) can be temporarily contracted. S3: Then, the pre-installed inner liner (2) and outer liner (1) are coaxially positioned and assembled to form an annular interlayer space between them. During this process, the outer edges of the first spiral guide plate (9) and the second spiral guide plate (10) are simultaneously fixed to the inner wall of the outer liner (1), thereby forming a complete continuous spiral downward flow channel in the interlayer. Then, one end of the T-shaped tube (17) pre-placed in the inner liner (2) is stretched and reset so that it passes through the heat insulation ring (11), the second fixing ring (7), the first sealing ring (15) and the corresponding holes pre-opened on the outer liner (1) in sequence. S4: Subsequently, the fixed pipe (12) assembly is installed through the corresponding holes of the outer liner (1), the heat insulation ring (11), the second fixed ring (7), the first sealing ring (15), and the heat insulation plate (13), and is fixedly connected to the heat insulation plate (13) to ensure smooth rotation. The DD motor (16) is installed on the outer wall of the outer liner (1), and its rotating part is connected to the fixed pipe (12) for drive. Then, the pump (21) is fixed on the outer liner (1), and the inlet pipe (22), the L-shaped pipe (23), and the outlet pipe (25) are connected. The fixed pipe (12) on the right is connected to the inlet of the pump (21) to form a complete closed-loop circulation circuit for heat transfer oil. At the same time, a humidity sensor (41) and a connecting pipe (42) with bolts (43) and a second sealing ring (44) are installed at the bottom of the outer liner (1). S5: Finally, the inner tank (2) and outer tank (1) are welded and sealed in sequence. After the main body is encapsulated, the water outlet pipe (3), the water inlet pipe (4) with multiple spiral parts (51) fixed inside, and the sewage pipe (5) are welded and connected to the top and bottom of the inner tank (2) respectively, and ensured that they pass through the outer tank (1) and are led out, thus completing the assembly and production of the entire double tank heat exchange structure.

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