A water supply device for a motorhome

Abstract

The present invention belongs to the technical field of RVs, and discloses a RV water supply device, including an engine coolant circulation device, a hot water tank connected to the engine coolant circulation device, a cold water tank connected to the hot water tank through a pipe and a valve, a hot water pipe connected to the hot water tank through a hot water pump, and a cold water pipe connected to the cold water tank through a cold water pump, wherein the cold water pipe is connected to the hot water pipe through a pipe and a valve. The RV water supply device adopting the above structural design can continuously circulate heat exchange between the hot water in the hot water tank and the cold water in the cold water tank through the connection of the hot water tank and the cold water tank, and then more heat released by the engine coolant circulation device during driving is recycled and reused, thereby effectively meeting the RV hot water supply demand, and at the same time can also achieve better environmental protection and energy saving purposes.

Description

Technical Field

[0001] The present invention relates to the technical field of recreational vehicles, and in particular to a water supply device for recreational vehicles. Background Art

[0002] RVs are a type of fashionable vehicle introduced from abroad. People use RVs to travel or live in, and can stop at beaches, lake shores, meadows, hillsides, and forests far away from cities. At the same time, they can enjoy the lifestyle of an city: cook their own delicious meals, take a hot bath, sleep on a soft and comfortable bed, watch TV, and listen to music.

[0003] Under the existing technology, most of the water supply devices installed on RVs have relatively simple functions. They generally provide hot water for travel by recovering heat energy from engine coolant or heating hot water tanks with fuel or electric water heaters. However, hot water tanks often have a low capacity. When a large amount of hot water and heat is needed in winter, more heat energy during driving cannot be recovered, and the heat energy cannot be used to heat the interior space of the RV after parking. Summary of the invention

[0004] The purpose of the present invention is to provide a motorhome water supply device, which can more efficiently recycle and reuse the heat released by the engine coolant circulation device through the arrangement of a hot water tank and a cold water tank, thereby achieving better energy saving and environmental protection.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A water supply device for a motorhome comprises an engine coolant circulation device, a hot water tank connected to the engine coolant circulation device, a cold water tank connected to the hot water tank via a pipeline and a valve, a hot water pipe connected to the hot water tank via a hot water pump, and a cold water pipe connected to the cold water tank via a cold water pump, wherein the cold water pipe is connected to the hot water pipe via a pipeline and a valve.

[0007] The hot water tank comprises a first tank body for storing normal temperature water, and a second tank body arranged at the bottom of the first tank body for exchanging heat for the normal temperature water in the first tank body.

[0008] Among them, the first box body is provided with a water inlet and a water outlet, the second box body is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are connected to the engine coolant circulation device, and the second box body is provided with a guide structure for uniform distribution of the engine coolant.

[0009] There are multiple cold water tanks, and the multiple cold water tanks are connected in series or in parallel to the first tank body of the hot water tank.

[0010] The outer surface of the hot water tank is covered with a heat insulation layer, and the hot water tank is isolated from the floor of the RV by the heat insulation layer.

[0011] Among them, the outer surface of the cold water tank except the top surface is covered with a heat insulation layer, and the top surface of the cold water tank exchanges heat with the indoor air of the RV through the floor.

[0012] Among them, it also includes a fuel water heater and / or an electric water heater arranged in the RV, and the fuel water heater and / or the electric water heater are connected to the hot water tank after being connected in series or in parallel with the engine coolant circulation device.

[0013] Among them, the guide structure includes a first guide plate, a second guide plate, a third guide plate and a fourth guide plate arranged in parallel and spaced apart, and the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are respectively provided with guide holes for evenly distributing the engine coolant in the second box cavity.

[0014] Among them, the total port area of ​​the guide holes of the first guide plate is greater than the total port area of ​​the guide holes of the second guide plate; the total port area of ​​the guide holes of the third guide plate is greater than the total port area of ​​the guide holes of the fourth guide plate.

[0015] Wherein, the first guide plate and the second guide plate are disposed at one end of the second box body where the liquid inlet is disposed; and the third guide plate and the fourth guide plate are disposed at one end of the second box body where the liquid outlet is disposed.

[0016] Beneficial effects of the present invention: The present invention provides a water supply device for a motorhome, including an engine coolant circulation device, a hot water tank connected to the engine coolant circulation device, a cold water tank connected to the hot water tank through a pipe and a valve, a hot water pipe connected to the hot water tank through a hot water pump, and a cold water pipe connected to the cold water tank through a cold water pump, wherein the cold water pipe is connected to the hot water pipe through a pipe and a valve. The motorhome water supply device adopting the above structural design can continuously circulate heat exchange between the hot water in the hot water tank and the cold water in the cold water tank through the connection between the hot water tank and the cold water tank, and then more heat released by the engine coolant circulation device during driving can be recycled and reused, thereby effectively meeting the hot water supply demand of the motorhome, and at the same time, it can also achieve better environmental protection and energy saving purposes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural connection schematic diagram of a water supply device for a recreational vehicle of the present invention.

[0018] Figure 2 yes Figure 1 Exploded view of the hot water tank.

[0019] Figure 3 yes Figure 2 Axonometric drawing of the second box body after the bottom plate is separated from the first box body.

[0020] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle.

[0021] Figure 5 yes Figure 2 Rear axonometric view after assembly. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0023] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; 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 the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0025] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0026] Combination Figures 1 to 5As shown, this embodiment provides a RV water supply device, which connects the cold water tank and the hot water tank through pipes and valves, and then converts the heat released by the engine coolant circulation device through the hot water tank, and then continuously exchanges heat with the cold water in the cold water tank, and then more efficiently recycles and reuses the heat released by the engine coolant circulation device, effectively meeting the RV's winter hot water demand. This arrangement is not only simple in structure, but also environmentally friendly and efficient.

[0027] Specifically, the RV water supply device in this embodiment includes an engine coolant circulation device 1, a hot water tank 2 connected to the engine coolant circulation device 1, a cold water tank 5 connected to the hot water tank 2 through a pipe and a valve, a hot water pipe 91 connected to the hot water tank 2 through a hot water pump 7, and a cold water pipe 92 connected to the cold water tank 5 through a cold water pump. The cold water pipe 92 is connected to the hot water pipe 91 through a pipe 93 and a valve 94.

[0028] Preferably, the normal temperature water stored in the hot water tank 2 in this embodiment is heat exchanged with the coolant in the engine coolant circulation device 1, and then the normal temperature water in the hot water tank 2 is heated, and then transported to the RV through the hot water pump 7 and the hot water pipe 91, so as to meet the hot water usage needs of the RV.

[0029] Furthermore, in order to prevent heat loss from the hot water tank 2 and improve its thermal insulation performance, as a preferred embodiment, the outer surface of the hot water tank 2 is also coated with a thermal insulation layer 3, and the hot water tank 2 is isolated from the floor 4 of the RV by the thermal insulation layer 3. Preferably, the thermal insulation layer 3 can be set as a rubber-plastic insulation layer with a tin foil covered on the outer surface.

[0030] Furthermore, in this embodiment, in order to facilitate the connection between the hot water tank 2 and the engine coolant circulation device 1 and effectively improve the heat conversion efficiency of the hot water tank 2, preferably, the hot water tank 2 in this embodiment includes a first box body 21 for storing normal temperature water, and a second box body 22 disposed at the bottom of the first box body 21 for exchanging heat with the normal temperature water in the first box body 21. Preferably, the second box body 22 in this embodiment is a cavity between the bottom plate 221 and the first box body 21, that is, the bottom plate 221 is sealed and fastened to the bottom surface of the first box body 21 to form the above-mentioned second box body 22.

[0031] Furthermore, the first box body 21 is provided with a water inlet 211 and a water outlet 212 , and the second box body 22 is provided with a liquid inlet 222 and a liquid outlet 223 , and the liquid inlet 222 and the liquid outlet 223 are connected to the engine coolant circulation device 1 .

[0032] The water inlet 211 and the water outlet 212 in the first box 21 with the above-mentioned structural design are mainly used for the supply of normal temperature water and the discharge of heated hot water; the arrangement of the liquid inlet 222 and the liquid outlet 223 in the second box 22, after being connected to the engine coolant circulation device 1, can make the coolant in the engine coolant circulation device 1 flow in and out through the liquid inlet 222 and the liquid outlet 223, and then exchange heat with the normal temperature water in the first box 21 during the circulation of the coolant. That is, the heat energy carried by the coolant in the engine coolant circulation device 1 is transferred to the first box 21 above the second box 22 through the heat exchange effect of the second box 22, and then the normal temperature water in the first box 21 is heated.

[0033] Furthermore, in this embodiment, in order to improve the heat conversion efficiency of the second box 22, a guide structure for uniform distribution of the engine coolant is provided in the second box 22. Preferably, the guide structure includes a first guide plate 224, a second guide plate 225, a third guide plate and a fourth guide plate arranged in parallel and spaced apart, and the first guide plate 224, the second guide plate 225, the third guide plate and the fourth guide plate are respectively uniformly provided with guide holes for uniform distribution of the engine coolant in the chamber of the second box 22.

[0034] Further preferably, the first guide plate 224 and the second guide plate 225 are provided at one end of the second box body 22 provided with the liquid inlet 222; the third guide plate and the fourth guide plate are provided at one end of the second box body 22 provided with the liquid outlet 223. That is, the first guide plate 224 is adjacent to the liquid inlet 222, the third guide plate is adjacent to the liquid outlet 223, and a buffer cavity for the coolant is formed between the second guide plate 225 and the fourth guide plate.

[0035] More specifically, in order to improve the uniformity of the coolant flowing into the second box 22 and improve the heat exchange efficiency, it is preferred that the total port area of ​​the guide holes of the first guide plate 224 is greater than the total port area of ​​the guide holes of the second guide plate 225; the total port area of ​​the guide holes of the third guide plate is greater than the total port area of ​​the guide holes of the fourth guide plate. That is, after the coolant flows slowly and evenly into the second box 22 through the liquid inlet 222, it flows back into the engine coolant circulation device 1 evenly and slowly from the liquid outlet 223, and then flows back from the liquid inlet 222 with heat, so as to heat the normal temperature water in the first box 21 in a reciprocating cycle. In this way, the heat released by the engine coolant circulation device 1 can be recycled and reused to the maximum extent, thereby achieving a better environmental protection and energy saving effect.

[0036] Further preferably, in order to recover more heat released from the engine coolant circulation device in this embodiment, the hot water tank 2 is also connected to a plurality of cold water tanks 5 through a pipe 93 and a valve 94. Preferably, the plurality of cold water tanks 5 are connected in series or in parallel to the first box body 21 of the hot water tank 2. The plurality of cold water tanks 5 connected in this way can be connected by the normal temperature water stored in the cold water tank 5. Since the plurality of cold water tanks 5 are connected to the hot water tank 2, the heat released by the engine coolant circulation device is first converted by the hot water tank 2, and then the hot water in the hot water tank 2 flows into the cold water tank 5, and the cold water in the cold water tank 5 flows into the hot water tank 2, so that the heat exchange is carried out in a cycle, and then the heat released by the engine coolant circulation device during driving can be recovered and reused, so that more hot water can be provided for the RV in winter. In this embodiment, the specific connection structure between the plurality of cold water tanks 5 and between the plurality of cold water tanks 5 and the hot water tank 2 is commonly used in the relevant technology, and will not be described in detail here.

[0037] More preferably, in the present embodiment, multiple cold water tanks 5 can also be used as cache tanks for the hot water tank 2, that is, the hot water heated in the hot water tank 2 is injected into the multiple cold water tanks 5 for cache. When it is needed, the hot water in the cold water tank 5 is pumped out for standby use through the action of the cold water pump 6 connected to the end cold water tank 5.

[0038] In addition, as a further preference, the hot water obtained by heat exchange in the cold water tank 5 in this embodiment can also provide effective protection for the heating of the RV. Specifically, as a preference, the outer surface of the cold water tank 5 except the top surface is coated with a heat insulation layer 3 in this embodiment, and the top surface of the cold water tank 5 exchanges heat with the indoor air of the RV through the floor 4. In this way, the heat emitted from the cold water tank 5 can be radiated into the compartment of the RV through the floor 4, so as to heat the RV; of course, the floor heating method can also be adopted, and the water pipe that is connected with the hot water tank 2 or the cold water tank 5 can be laid under the floor 4 of the RV to heat the RV. The specific structural design of the floor heating method is commonly used in the relevant technology and will not be described in detail here.

[0039] Furthermore, the RV water supply device adopting the above structural design is used as an effective supplement to the heat energy of the hot water tank 2. Preferably, in this embodiment, a fuel water heater 8 is also installed on the RV, and the fuel water heater 8 is connected to the hot water tank 2 after being connected in parallel with the engine coolant circulation device 1. In this way, when the engine coolant circulation device 1 stops working, such as during parking, the hot water tank 2 is continuously exchanged with the fuel water heater 8.

[0040] In this embodiment, the specific structural design and connection of the fuel water heater 8 and the engine coolant circulation device 1 are commonly used in the relevant technology and will not be described in detail here.

[0041] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the scope of protection of the present invention.

Claims

1. A water supply device for a motorhome, characterized in that: The invention comprises an engine coolant circulation device, a hot water tank connected to the engine coolant circulation device, a cold water tank connected to the hot water tank through a pipe and a valve, a hot water pipe connected to the hot water tank through a hot water pump, and a cold water pipe connected to the cold water tank through a cold water pump, wherein the cold water pipe is connected to the hot water pipe through a pipe and a valve; the hot water tank comprises a first box body for storing normal temperature water, and a second box body arranged at the bottom of the first box body for exchanging heat with the normal temperature water in the first box body; the first box body is provided with a water inlet and a water outlet, the second box body is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are connected to the The second box body is connected to an engine coolant circulation device, and a guide structure for uniform distribution of the engine coolant is arranged in the second box body; the guide structure includes a first guide plate, a second guide plate, a third guide plate and a fourth guide plate arranged in parallel and spaced apart, and the first guide plate, the second guide plate, the third guide plate and the fourth guide plate are respectively uniformly provided with guide holes for uniform distribution of the engine coolant in the second box body chamber; the total port area of ​​the guide holes of the first guide plate is greater than the total port area of ​​the guide holes of the second guide plate; the total port area of ​​the guide holes of the third guide plate is greater than the total port area of ​​the guide holes of the fourth guide plate.

2. The RV water supply device according to claim 1, characterized in that: The cold water tanks are provided in plurality, and the plurality of cold water tanks are connected in series or in parallel to the first tank body of the hot water tank.

3. The RV water supply device according to claim 1, characterized in that: The outer surface of the hot water tank is covered with a heat insulation layer, and the hot water tank is isolated from the floor of the RV by the heat insulation layer.

4. The RV water supply device according to claim 1, characterized in that: The outer surface of the cold water tank, except the top surface, is covered with a heat insulation layer, and the top surface of the cold water tank exchanges heat with the indoor air of the RV through the floor.

5. The RV water supply device according to claim 1, characterized in that: It also includes a fuel water heater and / or an electric water heater arranged in the RV, and the fuel water heater and / or the electric water heater are connected to the engine coolant circulation device in series or in parallel and then connected to the hot water tank.

6. The RV water supply device according to claim 1, characterized in that: The first guide plate and the second guide plate are disposed at one end of the second box body where the liquid inlet is disposed; the third guide plate and the fourth guide plate are disposed at one end of the second box body where the liquid outlet is disposed.

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