A hot water circulation system for a recreational vehicle

Abstract

The utility model discloses a house car hot water circulation system, including the fan heater, the parking heater, the anti -icing liquid water tank, the plate heat exchanger, the hot water tank, the anti -icing liquid water tank, the plate heat exchanger, the hot water tank are integrated into three in one water tank, and the outside of three in one water tank is wrapped with the insulating layer, and the import end of plate heat exchanger is connected cold water source, and from the export end of plate heat exchanger, the fan heater, the parking heater, the anti -icing liquid water tank are connected in proper order and form the heat cycle loop, this system is integrated to the anti -icing liquid water tank, the hot water tank and plate heat exchanger, and the integration degree is high, and the system pipeline length is shortened, the outside of three in one water tank is wrapped with the insulating layer, reduces the heat loss of anti -icing liquid water tank, stores the heat in the hot water tank, effectively reduces the volume of anti -icing liquid water tank, reduces the anti -icing liquid dosage, improves the energy efficiency of circulation system, the anti -icing liquid water tank adopts the split type design with hot water tank, and shares wall surface, keeps independent pressure -bearing capacity, improves hot water efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of RV technology, and relates to RV water system, specifically to an RV hot water circulation system. Background Technology

[0002] Currently, hot water in domestic RVs is mainly generated through plate heat exchangers. A parking heater heats the antifreeze, and then the heat is transferred to the domestic water via the plate heat exchanger. However, the mainstream 5kW fuel-fired heaters in RVs have relatively low power and limited output, which cannot meet the demand for prolonged hot water supply (it takes ≥30 minutes to heat 40L of water to 45℃). Therefore, a larger antifreeze tank, such as 20-30L, is required, with the parking heater storing heat in the antifreeze beforehand. This method increases the system size and results in poor transient response, with water temperature fluctuating significantly when the tap is turned on or off. Furthermore, plate heat exchangers have poor insulation and are prone to freezing damage in winter.

[0003] In view of the aforementioned problems with RV heating systems, existing technologies have been improved, resulting in an integrated plate heat exchanger and hot water tank solution. The hot water tank is also wrapped with an insulation layer, solving the problems of fluctuating hot water temperatures and the susceptibility of the plate heat exchanger to freezing. However, the antifreeze tank still suffers from heat loss, and the system requires a relatively large number of independently arranged pipes. Therefore, to meet the hot water needs of RVs, a RV hot water circulation system is proposed. Utility Model Content

[0004] To address the aforementioned problems, the main objective of this utility model is to design a hot water circulation system for RVs that integrates an antifreeze tank, a plate heat exchanger, and a hot water tank, and wraps them with an insulation layer. This solves the problems of fluctuating hot water temperatures in RVs, easy freezing damage, heat loss from the antifreeze tank, and excessive piping.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A hot water circulation system for RVs, comprising a heater, a parking heater, an antifreeze tank, a plate heat exchanger, and a hot water tank;

[0007] The antifreeze tank, plate heat exchanger, and hot water tank are integrated to form a three-in-one water tank, which is wrapped with an insulation layer.

[0008] The inlet end of the plate heat exchanger is connected to a cold water source, and the outlet end of the plate heat exchanger is connected in sequence to a heater, a parking heater, and an antifreeze tank to form a heat circulation loop. The hot water tank is equipped with a first hot water outlet and a drain outlet connected to the water terminal.

[0009] As a further description of this utility model, the insulation layer of the three-in-one water tank contains an antifreeze tank, a hot water tank, and a plate heat exchanger arranged in a wrapped manner.

[0010] As a further description of this utility model, at least one insulation layer is provided, which wraps around the outside of the integrated antifreeze tank, hot water tank, and plate heat exchanger.

[0011] As a further description of this utility model, the plate heat exchanger includes at least two inlets and two outlets, namely a cold water inlet, a second hot water outlet, a first antifreeze inlet, and an antifreeze outlet; wherein, the cold water inlet is connected to a cold water source, the second hot water outlet is connected to a hot water tank, the first antifreeze inlet is connected to an antifreeze tank, and the antifreeze outlet is connected to a heater in the heat circulation loop.

[0012] As a further description of this utility model, the antifreeze tank is provided with a second antifreeze inlet, which is connected to the parking heater of the thermal circulation circuit.

[0013] As a further description of this utility model, the hot water tank is made of stainless steel.

[0014] A motorhome equipped with the aforementioned motorhome hot water circulation system.

[0015] Compared with the prior art, the technical effects of this utility model are as follows:

[0016] This utility model provides a hot water circulation system for RVs, including a heater, a parking heater, an antifreeze tank, a plate heat exchanger, and a hot water tank. The antifreeze tank, plate heat exchanger, and hot water tank are integrated into a single unit. The three-in-one tank is externally wrapped with an insulation layer. The inlet of the plate heat exchanger is connected to a cold water source, and the heater, parking heater, and antifreeze tank are sequentially connected from the outlet of the plate heat exchanger to form a heat circulation loop. The hot water tank is equipped with a first hot water outlet and a drain outlet connected to the water-using terminal. This system achieves high integration by combining the antifreeze tank, hot water tank, and plate heat exchanger, shortening the system piping length. The external insulation layer of the three-in-one tank reduces heat loss from the antifreeze tank, storing heat in the hot water tank, effectively reducing the volume of the antifreeze tank, reducing antifreeze consumption, and improving the energy efficiency of the circulation system. The antifreeze tank and hot water tank are designed separately but share a wall, maintaining independent pressure resistance and improving hot water efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the circulation system connection of this utility model;

[0018] Figure 2 This is a schematic diagram of the inlet and outlet of the three-in-one water tank of this utility model;

[0019] Figure 3 This is a cross-sectional view of the three-in-one water tank structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the three-in-one water tank of this utility model.

[0021] In the diagram, 1. Heater, 2. Parking heater, 3. Antifreeze tank, 31. Second antifreeze inlet, 4. Plate heat exchanger, 41. Cold water inlet, 42. Second hot water outlet, 43. First antifreeze inlet, 44. Antifreeze outlet, 5. Hot water tank, 51. First hot water outlet, 52. Drain, 6. Insulation layer. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings:

[0023] In one embodiment of this utility model, a hot water circulation system for RVs is disclosed, such as... Figure 1-4 As shown, the system includes a heater 1, a parking heater 2, an antifreeze tank 3, a plate heat exchanger 4, and a hot water tank 5. The antifreeze tank 3, the plate heat exchanger 4, and the hot water tank 5 are integrated to form a three-in-one tank, which is covered with an insulation layer 6. The inlet end of the plate heat exchanger 4 is connected to a cold water source, and the heater 1, the parking heater 2, and the antifreeze tank 3 are sequentially connected from the outlet end of the plate heat exchanger 4 to form a heat circulation loop. The hot water tank 5 is provided with a first hot water outlet 51 connected to the water terminal and a drain outlet 52.

[0024] Specifically, in this embodiment, the insulation layer of the three-in-one water tank sequentially encloses the antifreeze tank 3, the hot water tank 5, and the plate heat exchanger 4. The antifreeze tank 3, enclosing the hot water tank 5, heats the domestic water. The plate heat exchanger 4, immersed within the hot water tank 5, heats the water both internally and externally. This achieves triple heating of the water, resulting in high thermal efficiency. Simultaneously, the insulation layer 6 is an EPP foam layer, and at least one layer is provided, wrapping around the integrated antifreeze tank 3, hot water tank 5, and plate heat exchanger 4. The specific number of layers can be adjusted according to actual needs, and can also be extended to all external leaking pipes to reduce heat loss from the water tank.

[0025] In this embodiment, the plate heat exchanger 4 includes at least two inlets and two outlets, namely a cold water inlet 41, a second hot water outlet 42, a first antifreeze inlet 43, and an antifreeze outlet 44. The cold water inlet 41 is connected to a cold water source, the second hot water outlet 42 is connected to a hot water tank 5, the first antifreeze inlet 43 is connected to an antifreeze tank 3, and the antifreeze outlet 44 is connected to a heater 1 in the heat circulation loop to generate warm air. The antifreeze tank 3 is equipped with a second antifreeze inlet 31, which is connected to a parking heater 2 in the heat circulation loop to ensure the thermal efficiency and stable operation of the system.

[0026] In the embodiments of this utility model, the materials used to manufacture the hot water tank 5 include, but are not limited to, stainless steel or other corrosion-resistant materials.

[0027] Based on the above, the hot water circulation system of this utility model is disclosed. Compared with the prior art, this utility model has the following advantages:

[0028] 1. This utility model integrates the antifreeze tank, hot water tank and plate heat exchanger, which has a high degree of integration and shortens the system pipeline length;

[0029] 2. This utility model wraps the integrated three-in-one water tank with an external heat insulation layer, reducing heat loss from the antifreeze tank and storing heat in the hot water tank, effectively reducing the volume of the antifreeze tank, reducing the amount of antifreeze used, and improving the energy efficiency of the circulation system.

[0030] 3. The antifreeze tank and hot water tank of this utility model adopt a separate design, but share a common wall surface, maintain independent pressure bearing capacity, and improve hot water efficiency.

[0031] In another embodiment of this utility model, a motorhome is also included, which is equipped with the above-mentioned motorhome hot water circulation system, and the use of heating and hot water in the motorhome is realized based on the system.

[0032] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A hot water circulation system for RVs, characterized in that: The system includes a heater, a parking heater, an antifreeze tank, a plate heat exchanger, and a hot water tank; The antifreeze tank, plate heat exchanger, and hot water tank are integrated to form a three-in-one water tank, which is wrapped with an insulation layer. The inlet end of the plate heat exchanger is connected to a cold water source, and the outlet end of the plate heat exchanger is connected in sequence to a heater, a parking heater, and an antifreeze tank to form a heat circulation loop. The hot water tank is equipped with a first hot water outlet and a drain outlet connected to the water terminal.

2. The RV hot water circulation system according to claim 1, characterized in that: The three-in-one water tank has an antifreeze tank, a hot water tank, and a plate heat exchanger arranged sequentially inside the insulation layer.

3. A RV hot water circulation system according to claim 1 or 2, characterized in that: At least one insulation layer should be installed to wrap around the outside of the integrated antifreeze tank, hot water tank, and plate heat exchanger.

4. The RV hot water circulation system according to claim 1, characterized in that: The plate heat exchanger includes at least two inlets and two outlets, namely a cold water inlet, a second hot water outlet, a first antifreeze inlet, and an antifreeze outlet; wherein, the cold water inlet is connected to a cold water source, the second hot water outlet is connected to a hot water tank, the first antifreeze inlet is connected to an antifreeze tank, and the antifreeze outlet is connected to a heater in the heat circulation loop.

5. A RV hot water circulation system according to claim 4, characterized in that: The antifreeze tank is equipped with a second antifreeze inlet, which is connected to the parking heater in the thermal circulation circuit.

6. A RV hot water circulation system according to claim 1, characterized in that: The hot water tank is made of stainless steel.

7. A motorhome, characterized in that, The RV is equipped with the RV hot water circulation system according to any one of claims 1-6.

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