A dual heat source water supply device for a house car
By introducing a dual heat source system and transmission mechanism into the RV's domestic water supply device, flexible adjustment of the water storage space and selective heating are achieved, solving the energy waste problem caused by a single heat source and improving the energy efficiency and convenience of RV domestic water supply.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJI RV (JIANGSU) CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-09
Smart Images

Figure CN224340339U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of RV water supply technology, specifically to an RV dual-heat-source domestic water supply device. Background Technology
[0002] With the improvement of people's living standards and the diversification of travel methods, RV travel is becoming increasingly popular. In RV living, the supply of drinking water is a crucial aspect, and the supply of hot water is key to improving the quality of RV life.
[0003] Currently, existing RV water supply systems are typically equipped with a single heating source, making it difficult to guarantee a continuous supply of hot water in situations with unstable energy supply or under specific conditions. Furthermore, the water tanks in existing RVs have a fixed storage capacity, requiring the entire tank to be heated regardless of actual water demand. This consumes a significant amount of energy, resulting in serious energy waste and contradicting the energy-saving principles of RV travel. Utility Model Content
[0004] In view of the problems existing in the above-mentioned dual-heat-source domestic water supply devices for RVs, this utility model is proposed.
[0005] Therefore, the purpose of this utility model is to provide a dual-heat-source domestic water supply device for RVs, which solves the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A dual-heat-source domestic water supply device for RVs includes a water tank and an adjusting plate. The adjusting plate is slidably disposed inside one side of the water tank. A water outlet pipe is provided on one side of the lower end of the water tank, and a water inlet pipe is provided on the upper end of the other side of the water tank. A heat exchanger is provided on the front side of the water tank. An electric heating rod is provided inside the water tank and on the side near the water outlet pipe. A through hole is opened on the side wall of the adjusting plate at a position corresponding to the water inlet pipe. A corrugated pipe is fixedly connected between the through hole and the water inlet pipe. A transmission mechanism for moving the adjusting plate is provided in the middle of the water tank.
[0008] Preferably, the transmission mechanism includes a turntable and a movable frame. A rotating rod is rotatably mounted in the middle of the water tank. The turntable is fixedly sleeved on the front end of the rotating rod. A round pin is eccentrically mounted on the front side of the turntable. A fixing rod is fixedly mounted on the side of the adjusting plate near the turntable. The movable frame is fixedly mounted on the end of the fixing rod near the turntable. The front end of the round pin passes through the movable frame. The rear end of the rotating rod extends to the outside of the water tank. A limiting mechanism for restricting the rotation of the rotating rod is provided on the rear outer wall of the water tank.
[0009] Preferably, the limiting mechanism includes a limiting ring and a locking block. The limiting ring is fixedly sleeved on one outer end of the rotating rod. A horizontal plate is fixedly installed on the rear outer wall of the water tank above the limiting ring. A threaded rod is threadedly sleeved in the middle of the horizontal plate. A movable block is rotatably connected to the lower end of the threaded rod. The locking block is fixedly installed on the lower side of the movable block. Multiple locking slots are arranged in a circular array around the center of the limiting ring. The locking block engages with the corresponding locking slot.
[0010] Preferably, both ends of the horizontal plate are movably fitted with limit rods, and the lower end of the limit rods is fixedly connected to the movable block.
[0011] Preferably, the outer wall of the adjusting plate is provided with a sealing gasket.
[0012] Preferably, both the inlet pipe and the outlet pipe are equipped with valves.
[0013] The technical effects and advantages provided by this utility model in the above technical solution are as follows:
[0014] 1. This utility model uses a dual heat source of heat exchanger and electric heating rod to heat the water in the water tank in a more energy-efficient way.
[0015] 2. In this utility model, by rotating the turntable, the round pin slides within the movable frame. During this process, the round pin pushes the movable frame to move, thereby moving the adjustment plate and adjusting the water storage space in the water tank, which can reduce the energy required to heat the water.
[0016] 3. In this utility model, by rotating the threaded rod, the locking block is engaged in the slot on the side wall of the limiting ring, which can limit the rotation rod and thus maintain the stability of the position of the adjusting plate. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0018] Figure 1 This is a schematic diagram of the structure of a dual-heat-source domestic water supply device for RVs proposed in this utility model;
[0019] Figure 2 for Figure 1 Internal structure diagram;
[0020] Figure 3 for Figure 1 A schematic diagram of the rear view structure.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1. Water tank; 2. Heat exchanger; 3. Inlet pipe; 4. Outlet pipe; 5. Electric heating rod; 6. Adjusting plate; 7. Corrugated pipe; 8. Rotating rod; 9. Turntable; 10. Fixing rod; 11. Round pin; 12. Movable frame; 13. Limiting ring; 14. Horizontal plate; 15. Limiting rod; 16. Movable block; 17. Locking block; 18. Threaded rod. Detailed Implementation
[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0024] This utility model discloses a dual-heat-source domestic water supply device for RVs.
[0025] Example 1
[0026] Reference Figures 1-3 A dual-heat-source domestic water supply device for RVs includes a water tank 1 and an adjusting plate 6. The adjusting plate 6 is slidably disposed inside one side of the water tank 1. A sealing gasket is provided on the outer wall of the adjusting plate 6 to improve the sealing effect between the adjusting plate 6 and the inner wall of the water tank 1. A water outlet pipe 4 is provided on one side of the lower end of the water tank 1, and a water inlet pipe 3 is provided on the upper end of the other side of the water tank 1. Valves are provided inside both the water inlet pipe 3 and the water outlet pipe 4 to facilitate the control of water inlet and outlet. A heat exchanger 2 is provided on the front side of the water tank 1. An electric heating rod 5 is provided inside the water tank 1 and on the side near the water outlet pipe 4. A through hole is opened on the side wall of the adjusting plate 6 at the position corresponding to the water inlet pipe 3. A corrugated pipe 7 is fixedly connected between the through hole and the water inlet pipe 3. A transmission mechanism for moving the adjusting plate 6 is provided in the middle of the water tank 1.
[0027] Example 2
[0028] Reference Figures 1-3 The transmission mechanism includes a turntable 9 and a movable frame 12. A rotating rod 8 is rotatably mounted in the middle of the water tank 1. The turntable 9 is fixedly sleeved on the front end of the rotating rod 8. A round pin 11 is eccentrically mounted on the front side of the turntable 9. A fixing rod 10 is fixedly mounted on the side of the adjusting plate 6 near the turntable 9. The movable frame 12 is fixedly mounted on the end of the fixing rod 10 near the turntable 9. The front end of the round pin 11 passes through the movable frame 12. The rear end of the rotating rod 8 extends to the outside of the water tank 1. A limiting mechanism for restricting the rotation of the rotating rod 8 is provided on the rear outer wall of the water tank 1.
[0029] Example 3
[0030] Reference Figures 1-3The limiting mechanism includes a limiting ring 13 and a locking block 17. The limiting ring 13 is fixedly sleeved on one end of the outer side of the rotating rod 8. A horizontal plate 14 is fixedly installed on the rear outer wall of the water tank 1 and above the limiting ring 13. A threaded rod 18 is threadedly sleeved in the middle of the horizontal plate 14. A movable block 16 is rotatably connected to the lower end of the threaded rod 18. The locking block 17 is fixedly installed on the lower side of the movable block 16. Multiple slots are arranged in a ring array around the center of the limiting ring 13 on the side wall. The locking block 17 engages with the corresponding slot. Limiting rods 15 are movably sleeved inside both ends of the horizontal plate 14. The lower end of the limiting rod 15 is fixedly connected to the movable block 16, so that the movable block 16 cannot rotate, that is, it can slide stably.
[0031] In this utility model, when adjusting the water storage space of the water tank 1 according to the actual domestic water demand, first rotate the threaded rod 18. The threaded rod 18 drives the movable block 16 to move upward along the limiting rod 15, and the locking block 17 disengages from the locking groove of the limiting ring 13, thereby releasing the rotation restriction on the rotating rod 8.
[0032] Rotating the rear end of the rotating rod 8 causes the front turntable 9 to rotate synchronously. The round pin 11 on the turntable 9 slides within the movable frame 12 and pushes the movable frame 12 to move. The movable frame 12 drives the adjusting plate 6 to slide along the inner wall of the water tank 1 via the fixed rod 10. During the movement of the adjusting plate 6, the corrugated pipe 7 extends and retracts with the movement of the adjusting plate 6 to ensure the connectivity between the water inlet pipe 3 and the through hole of the adjusting plate 6. The sealing gasket on the outer wall of the adjusting plate 6 ensures its sealing with the inner wall of the water tank 1 to prevent the water from mixing on both sides.
[0033] When the adjusting plate 6 moves to the desired position (i.e., the water storage space is the right size), the threaded rod 18 is rotated in the opposite direction, and the movable block 16 moves down, causing the locking block 17 to re-engage into the corresponding slot of the limiting ring 13, thus fixing the position of the rotating rod 8 and the adjusting plate 6.
[0034] Water is injected into the water tank 1 through the inlet pipe 3. The water enters the area between the regulating plate 6 and the outlet pipe 4 through the through holes of the corrugated pipe 7 and the regulating plate 6. When heating, the heat exchanger 2 (such as using the waste heat of the RV engine) or the electric heating rod 5 can be selected to heat the water in this area according to the energy situation. Since the water storage space can be adjusted as needed, unnecessary heating is reduced and energy consumption is reduced.
[0035] When using hot water, open the valve of the outlet pipe 4, and hot water will flow out from the outlet pipe 4. The valves of the inlet pipe 3 and the outlet pipe 4 can control the water inlet and outlet respectively, ensuring the controllability of the water use process. The entire device realizes the combination of flexible adjustment of water storage space and dual heat source heating, which significantly improves the energy saving and convenience of RV water use.
[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A dual-heat-source domestic water supply device for RVs, comprising a water tank (1) and a regulating plate (6), characterized in that, The adjusting plate (6) is slidably disposed on one side of the inside of the water tank (1). A water outlet pipe (4) is provided on one side of the lower end of the water tank (1). A water inlet pipe (3) is provided on the upper end of the other side of the water tank (1). A heat exchanger (2) is provided on the front side of the water tank (1). An electric heating rod (5) is provided inside the water tank (1) and on the side near the water outlet pipe (4). A through hole is provided on the side wall of the adjusting plate (6) at a position corresponding to the water inlet pipe (3). A corrugated pipe (7) is fixedly connected between the through hole and the water inlet pipe (3). A transmission mechanism for moving the adjusting plate (6) is provided in the middle of the water tank (1).
2. The RV dual-heat-source domestic water supply device according to claim 1, characterized in that, The transmission mechanism includes a turntable (9) and a movable frame (12). A rotating rod (8) is rotatably arranged in the middle of the water tank (1). The turntable (9) is fixedly sleeved on the front end of the rotating rod (8). A round pin (11) is eccentrically arranged on the front side of the turntable (9). A fixing rod (10) is fixedly arranged on the side of the adjusting plate (6) near the turntable (9). The movable frame (12) is fixedly arranged at the end of the fixing rod (10) near the turntable (9). The front end of the round pin (11) passes through the movable frame (12). The rear end of the rotating rod (8) extends to the outside of the water tank (1). A limiting mechanism for restricting the rotation of the rotating rod (8) is provided on the rear outer wall of the water tank (1).
3. The RV dual-heat-source domestic water supply device according to claim 2, characterized in that, The limiting mechanism includes a limiting ring (13) and a locking block (17). The limiting ring (13) is fixedly sleeved on the outer end of the rotating rod (8). A horizontal plate (14) is fixedly installed on the rear outer wall of the water tank (1) and above the limiting ring (13). A threaded rod (18) is threadedly sleeved in the middle of the horizontal plate (14). A movable block (16) is rotatably connected to the lower end of the threaded rod (18). The locking block (17) is fixedly installed on the lower side of the movable block (16). Multiple locking slots are distributed in a ring array around the center of the limiting ring (13). The locking block (17) engages with the corresponding locking slot.
4. The RV dual-heat-source domestic water supply device according to claim 3, characterized in that, Both ends of the horizontal plate (14) are movably fitted with limit rods (15), and the lower end of the limit rods (15) is fixedly connected to the movable block (16).
5. The RV dual-heat-source domestic water supply device according to claim 1, characterized in that, The outer wall of the adjusting plate (6) is provided with a sealing gasket.
6. The RV dual-heat-source domestic water supply device according to claim 1, characterized in that, Both the inlet pipe (3) and the outlet pipe (4) are equipped with valves.