A multi-functional fresh water tank device for RVs

Abstract

A multi-functional fresh water tank device for RVs includes a fresh water tank, an expansion tank, and a heat exchanger. The fresh water tank is connected to a water circuit mounting bracket, on which a filter, water pump, pressure tank, two-way solenoid valve, and thermostatic valve are mounted. The fresh water tank is connected to the filter, water pump, and pressure tank sequentially via water pipes. The fresh water tank is connected to the expansion tank, which in turn is connected to the heat exchanger. This device integrates the water pump, filter, pressure tank, two-way solenoid valve, and thermostatic valve onto the water circuit mounting bracket, connecting the fresh water tank, expansion tank, and heat exchanger together. It features high integration, simple installation, and low maintenance difficulty. It achieves the function of heating the water inside the fresh water tank and preventing freezing. In winter, when the temperature is below zero, the drain valve can be opened in advance to empty the water tank, cold water pipes, and hot water pipes, achieving drainage and antifreeze functions.

Description

Technical Field

[0001] This utility model relates to the field of RV technology, and in particular to a multi-functional fresh water tank device for RVs. Background Technology

[0002] As RVs become increasingly popular, more and more users are demanding more water for their interiors. Currently, the fresh water tanks in RVs on the market have limited functionality, especially in winter when temperatures are low, resulting in either no hot water or short-lived hot water supply, leading to a poor winter RV experience for users. Furthermore, the installation of water-related equipment in RVs is often scattered and complex, increasing the risk of leaks.

[0003] Therefore, there is a need to propose a multi-functional fresh water tank device for RVs, with an integrated design that meets the functions of heat preservation, heating, temperature control and drainage of fresh water tanks in RVs. Summary of the Invention

[0004] The purpose of this utility model is to provide a multi-functional fresh water tank device for RVs, including a fresh water tank, an expansion tank, and a heat exchanger. The fresh water tank is connected to a water circuit mounting bracket, on which a filter, a water pump, a pressure tank, a two-way solenoid valve, and a thermostatic valve are installed. The fresh water tank is connected to the filter, the water pump, and the pressure tank in sequence through water pipes. The fresh water tank is connected to the expansion tank, and the expansion tank is connected to the heat exchanger.

[0005] Preferably, the pressure tank is connected to a first three-way valve, which is connected to a second three-way valve and a third three-way valve respectively. The third three-way valve is connected to a heat exchanger and a thermostatic valve respectively. The heat exchanger is connected to a fourth three-way valve, which is connected to a drain valve and a two-way solenoid valve respectively. The two-way solenoid valve is connected to a clean water tank.

[0006] Preferably, the expansion tank is connected to the heater via an antifreeze pipe, the heater is connected to the heat exchanger via an antifreeze pipe, and the heat exchanger is connected to the expansion tank via an antifreeze pipe.

[0007] Preferably, the second three-way valve is connected to the drain valve and the cold water pipe respectively, and the thermostatic valve is connected to the hot water pipe; the cold water pipe and the hot water pipe are connected to the water-using equipment in the RV.

[0008] Preferably, the clean water tank is connected to a drain valve, and the clean water tank is connected to a water inlet and an air outlet.

[0009] Preferably, the heat exchanger uses a heat exchanger mounting bracket and is fixedly connected to the expansion tank by bolts.

[0010] Preferably, the expansion tank is fixedly connected to the clean water tank using an expansion tank mounting bracket via bolts.

[0011] Preferably, the water circuit mounting bracket is fixedly connected to the clean water tank by bolts.

[0012] The beneficial effects of this utility model are as follows: (1) This device integrates water pump, filter, pressure tank, two-way solenoid valve and thermostatic valve on water circuit mounting bracket. The clean water tank, expansion tank and heat exchanger are connected and integrated together through the bracket. The overall integration is high, the installation is simple and the maintenance is easy.

[0013] (2) The cold water inside the clean water tank is pumped out to the heat exchanger by the water pump, and after exchanging heat with the high temperature antifreeze, hot water flows out; then, by opening the two-way solenoid valve, the hot water flows back into the clean water tank, thereby realizing the function of heating the water temperature inside the clean water tank and preventing freezing.

[0014] (3) When the temperature is below zero in winter, the drain valve can be opened in advance to drain the water tank, cold water pipe and hot water pipe to achieve the function of drainage and antifreeze. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below: Figure 1 This is a schematic diagram of the overall structure of the multifunctional clean water tank device of this utility model.

[0016] Figure 2 This is a schematic diagram of the waterway installation bracket of this utility model.

[0017] Figure 3 This is a schematic diagram of the clean water tank of this utility model.

[0018] Figure 4 This is a schematic diagram of the mounting bracket fixing of the heat exchanger of this utility model.

[0019] Figure 5 This is a schematic diagram of the connection of this utility model.

[0020] Explanation of reference numerals in the attached diagram: Filter 1, Water pump 2, Pressure tank 3, Water circuit mounting bracket 4, Thermostatic valve 5, Water inlet 6, Overflow port 7, Water inlet 8, Expansion tank 9, Heat exchanger 10, Heat exchanger mounting bracket 11, Expansion tank mounting bracket 12, Antifreeze pipe 13, Drain valve 14, Hot water pipe 15, Cold water pipe 16, Two-way solenoid valve 17, Clean water tank 18, Heater 19, First tee 21, Second tee 22, Third tee 23, Fourth tee 24. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of the present utility model; however, the present utility model may also be implemented in other ways different from those described herein, and therefore, the present utility model is not limited to the specific embodiments disclosed below.

[0022] like Figure 1-5 As shown, a multi-functional fresh water tank device for RVs includes a fresh water tank 18, an expansion tank 9, and a heat exchanger 10. The fresh water tank 18 is connected to a water circuit mounting bracket 4. A filter 1, a water pump 2, a pressure tank 3, a two-way solenoid valve 17, and a thermostatic valve 5 are installed on the water circuit mounting bracket 4. The fresh water tank 18 is connected to the filter 1, the water pump 2, and the pressure tank 3 in sequence through water pipes. The fresh water tank 18 is connected to the expansion tank 9, and the expansion tank 9 is connected to the heat exchanger 10.

[0023] Pressure tank 3 is connected to first tee 21, first tee 21 is connected to second tee 22 and third tee 23 respectively, third tee 23 is connected to heat exchanger 10 and thermostatic valve 5 respectively, heat exchanger is connected to fourth tee 24, fourth tee 24 is connected to drain valve 14 and two-way solenoid valve 17 respectively, two-way solenoid valve 17 is connected to clean water tank 18; the above connections are made through water pipes. The expansion tank 9 is connected to the heater 19 via the antifreeze pipe 13. The heater 19 is connected to the heat exchanger 10 via the antifreeze pipe 13. The heat exchanger 10 is connected to the expansion tank 9 via the antifreeze pipe 13. The expansion tank 9 is filled with high-temperature antifreeze. The heat from the expansion tank 9 is radiated to the clean water tank 18, which has an insulation function.

[0024] The second three-way valve 22 connects to the drain valve 14 and the cold water pipe 16 respectively, and the thermostatic valve 5 connects to the hot water pipe 15; the cold water pipe 16 and the hot water pipe 15 connect to the water-using equipment in the RV, such as the sink, shower, external water supply, toilet, etc.

[0025] The clean water tank 18 is connected to the drain valve 14. In winter when the temperature is below zero, the drain valve 14 can be opened in advance to drain the clean water tank 18, cold water pipe 16 and hot water pipe 15, thus achieving the function of draining and preventing freezing.

[0026] The clean water tank 18 is connected to the water inlet 8 and the vent 7. Clean water is added to the clean water tank 18 through the water inlet 8. When there is water in the clean water tank 18, water can be drawn from the outside through the water outlet 6. The vent 7 is used to vent the air in the water tank when adding water.

[0027] The heat exchanger 10 is fixedly connected to the expansion tank 9 by bolts using a heat exchanger mounting bracket 11.

[0028] The expansion tank 9 is fixedly connected to the clean water tank 18 by bolts using the expansion tank mounting bracket 12.

[0029] The water pipe mounting bracket 4 is fixedly connected to the clean water tank 18 by bolts.

[0030] Cold water inside the clean water tank 18 is pumped out to the heat exchanger 10 by the water pump 2, where it exchanges heat with the high-temperature antifreeze, and then hot water flows out. The hot water then flows back into the clean water tank 18 by opening the two-way solenoid valve 17. This achieves the function of heating the water temperature inside the clean water tank 18.

[0031] After the hot and cold water pass through thermostatic valve 5, the outlet water temperature of thermostatic valve 5 is kept constant at 40~65 degrees Celsius, achieving the constant temperature function. After the temperature is constant, the water in the clean water tank is warmer than the normal water temperature. This shortens the heating time when using hot water at a higher temperature compared to heating water from cold water. At the same time, in winter, because the water in the tank has a certain temperature, it is less likely to freeze.

[0032] This utility model embodiment has a high degree of overall integration, and is not only quick and easy to install; it realizes the functions of heat preservation, heating, constant temperature and drainage of the clean water tank; in addition, when the temperature is below zero in winter, the drain valve 14 can be opened in advance to drain the clean water tank 18, cold water pipe 16 and hot water pipe 15, realizing the function of draining and preventing freezing of the clean water tank 18, thus having broad application prospects.

[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-functional fresh water tank device for RVs, characterized in that, It includes a clean water tank, an expansion tank, and a heat exchanger. The clean water tank is connected to a water circuit mounting bracket, on which a filter, a water pump, a pressure tank, a two-way solenoid valve, and a thermostatic valve are installed. The clean water tank is connected to the filter, the water pump, and the pressure tank in sequence through water pipes. The clean water tank is connected to the expansion tank, and the expansion tank is connected to the heat exchanger.

2. The multi-functional fresh water tank device for RVs according to claim 1, characterized in that, The pressure tank is connected to a first three-way valve, which is connected to a second three-way valve and a third three-way valve. The third three-way valve is connected to a heat exchanger and a thermostatic valve. The heat exchanger is connected to a fourth three-way valve, which is connected to a drain valve and a two-way solenoid valve. The two-way solenoid valve is connected to a clean water tank.

3. The RV multi-functional fresh water tank device according to claim 2, characterized in that, The expansion tank is connected to the heater via an antifreeze pipe, the heater is connected to the heat exchanger via an antifreeze pipe, and the heat exchanger is connected to the expansion tank via an antifreeze pipe.

4. The RV multi-functional fresh water tank device according to claim 2, characterized in that, The second three-way valve is connected to the drain valve and the cold water pipe respectively, and the thermostatic valve is connected to the hot water pipe; the cold water pipe and the hot water pipe are connected to the water-using equipment in the RV.

5. The multi-functional fresh water tank device for RVs according to claim 1, characterized in that, The clean water tank is connected to a drain valve, and the clean water tank is connected to a water inlet and an vent.

6. The multi-functional fresh water tank device for RVs according to claim 1, characterized in that, The heat exchanger is fixedly connected to the expansion tank using a heat exchanger mounting bracket and bolts.

7. The multi-functional fresh water tank device for RVs according to claim 1, characterized in that, The expansion tank is fixedly connected to the clean water tank by bolts using an expansion tank mounting bracket.

8. A multi-functional fresh water tank device for RVs according to claim 1, characterized in that, The water circuit mounting bracket is fixedly connected to the clean water tank by bolts.

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