Heat preservation and anti-freezing system for water tank of motor home

Abstract

The utility model discloses a limo water tank heat preservation and anti-freezing system which comprises an anti-freezing solution water tank storing anti-freezing solution, a water heating heater, a first heating pipeline used for conducting heating and heat preservation on a clear water tank, a second heating pipeline used for conducting heating and heat preservation on an ash water tank and a heat preservation control system. Wherein the water heating heater is connected with the anti-freezing solution water tank through a first connecting pipeline, and a water pump is arranged on the first connecting pipeline; the first heating pipeline and the second heating pipeline are both connected with a second connecting pipeline, the second connecting pipeline is connected with a water heating heater, and a first electromagnetic valve and a second electromagnetic valve are arranged at the water inlet end of the first heating pipeline and the water inlet end of the second heating pipeline respectively; the water outlet end of the second connecting pipeline is further connected with a third connecting pipeline communicated with the anti-freezing solution water tank, and a third electromagnetic valve is arranged on the third connecting pipeline. The first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are in electric signal connection with the heat preservation control system.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a water tank heat preservation and antifreeze system for a recreational vehicle. Background Art

[0002] RVs, also known as motorhomes, can be parked on beaches, lakeshores, grasslands, hillsides, and forests far away from the city, while enjoying the lifestyle of the city. RVs are like smaller versions of houses, and can be roughly divided into two types: self-propelled and trailer-type. Self-propelled RVs can be divided into self-propelled A-type, B-type, and C-type, and trailer-type RVs can be divided into trailer-type A-type, B-type, C-type, D-type, and mobile villas. RVs generally have bedrooms, bathrooms with toilets, washstands, and bathtubs, living rooms, and open kitchens.

[0003] At present, the traditional insulation measure for RV water tanks is to wrap insulation cotton on the outside of the water tank for passive insulation. However, this insulation method cannot cope with cold environments, and ice is easily formed inside the water tank, causing the water tank to swell and crack. Utility Model Content

[0004] In view of the defects in the prior art, the utility model provides a RV water tank insulation and antifreeze system to solve the technical problems raised in the background technology.

[0005] A motorhome water tank insulation and antifreeze system comprises an antifreeze liquid water tank storing antifreeze liquid, a water heater, a first heating pipeline for heating and insulating a clean water tank, a second heating pipeline for heating and insulating a gray water tank, and an insulation control system; wherein:

[0006] The water heater is connected to the antifreeze liquid tank via a first connecting pipe, and a water pump is provided on the first connecting pipe;

[0007] The first heating pipeline and the second heating pipeline are both connected to the second connecting pipeline, the second connecting pipeline is connected to the water heater, a first solenoid valve and a second solenoid valve are respectively provided on the water inlet end of the first heating pipeline and the water inlet end of the second heating pipeline; the water outlet end of the first heating pipeline and the water outlet end of the second heating pipeline are both connected to the antifreeze liquid water tank;

[0008] A third connecting pipe is also connected to the water outlet end of the second connecting pipe, the third connecting pipe is in communication with the antifreeze liquid tank, and a third solenoid valve is provided on the third connecting pipe;

[0009] The first solenoid valve, the second solenoid valve and the third solenoid valve are all connected to the temperature insulation control system by electrical signals.

[0010] Further, the first heating pipeline includes a first heating coil, and the first heating coil is arranged in the clean water tank;

[0011] The second heating circuit includes a second heating coil, and the second heating coil is disposed in the gray water tank.

[0012] Furthermore, the first solenoid valve and the second solenoid valve are both normally closed solenoid valves, and the third solenoid valve is a normally open solenoid valve.

[0013] Furthermore, a heat exchanger is connected in series to the first connecting pipe.

[0014] Furthermore, the insulation control system includes a controller, a clean water tank water temperature sensor and a gray water tank water temperature sensor, the clean water tank water temperature sensor and the gray water tank water temperature sensor are both connected to the controller, and the first solenoid valve, the second solenoid valve and the third solenoid valve are all connected to the controller.

[0015] Furthermore, the controller controls the first solenoid valve, the second solenoid valve and the third solenoid valve through corresponding relays.

[0016] Furthermore, the thermal insulation control system further comprises a clean water tank water level sensor and a grey water tank water level sensor, and the clean water tank water level sensor and the grey water tank water level sensor are both connected to the controller.

[0017] Furthermore, the controller is a single chip microcomputer.

[0018] The beneficial effects of the utility model are embodied in:

[0019] The RV water tank insulation and antifreeze system provided by the utility model heats the antifreeze liquid through a water heating heater, and the heated antifreeze liquid flows into the clean water tank and the gray water tank respectively through corresponding heating pipelines, thereby heating the water in the clean water tank and the gray water tank to prevent the water in the water tank from freezing in a low temperature environment, and the sewage in the gray water tank can be discharged at any time.

[0020] In addition, by collecting water temperature data through the clean water tank water temperature sensor and the gray water tank water temperature sensor, the controller can set different control temperature ranges, starting heating when the temperature is lower than the set temperature, and stopping heating when the temperature is higher than the set temperature.

[0021] Finally, by controlling the switch states of the first solenoid valve, the second solenoid valve and the third solenoid valve through the controller, the flow direction of the antifreeze liquid can be changed, thereby heating each water tank differently. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0023] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification are used to explain the principles of the present application. For ordinary technicians in this field, other accompanying drawings can also be obtained based on these accompanying drawings without paying creative labor.

[0024] Figure 1 A schematic diagram of the structure of a water tank insulation and antifreeze system for a motorhome provided by an embodiment of the utility model;

[0025] Figure 2 A schematic structural diagram of a thermal insulation control system provided in an embodiment of the utility model.

[0026] The realization of the purpose, functional features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. The above-mentioned drawings have shown clear embodiments of this application, which will be described in more detail later. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0027] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0028] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0030] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] like Figure 1 As shown, the utility model provides a motorhome water tank insulation and antifreeze system, including an antifreeze liquid tank 1 storing antifreeze liquid, a water heater 2, a first heating pipeline 4 for heating and insulating a fresh water tank 3, a second heating pipeline 6 for heating and insulating a gray water tank 5, and an insulation control system.

[0034] Specifically, the water heater 2 is connected to the antifreeze tank 1 through a first connecting pipe 7, and a water pump 8 is provided on the first connecting pipe 7. The water pump 8 pumps the antifreeze in the antifreeze tank 1 into the water heater 2 through the first connecting pipe 7 to heat the antifreeze, and makes the antifreeze circulate in the entire circulation pipeline.

[0035] The first heating pipeline 4 and the second heating pipeline 6 are both connected to the second connecting pipeline 9, and the second connecting pipeline 9 is connected to the water heater 2. The first solenoid valve 10 and the second solenoid valve 11 are respectively arranged on the water inlet end of the first heating pipeline 4 and the water inlet end of the second heating pipeline 6; the water outlet end of the first heating pipeline 4 and the water outlet end of the second heating pipeline 6 are both connected to the antifreeze tank 1. The third connecting pipeline 12 is also connected to the water outlet end of the second connecting pipeline 9, and the third connecting pipeline 12 is connected to the antifreeze tank 1. The third solenoid valve 13 is arranged on the third connecting pipeline 12. The first solenoid valve 10, the second solenoid valve 11 and the third solenoid valve 13 are all connected to the insulation control system with electrical signals.

[0036] Specifically, the first heating pipeline 4 includes a first heating coil, which is arranged in the clean water tank 3. The second heating pipeline 6 includes a second heating coil, which is arranged in the gray water tank 5. After the antifreeze liquid heated by the water heater 2 flows through the second connecting pipe 9, it can flow into the first heating coil of the first heating pipeline 4 and the second heating coil of the second heating pipeline 6, respectively, so as to heat and keep the clean water in the clean water tank 3 and the sewage in the gray water tank 5 warm.

[0037] In actual use, the user can control the first solenoid valve 10 and the second solenoid valve 11 to be in an open state and the third solenoid valve 13 to be in a closed state through the heat preservation control system. At this time, the clean water in the clean water tank 3 and the sewage in the gray water tank 5 can be heated and insulated at the same time;

[0038] Alternatively, the first solenoid valve 10 is controlled to be in an open state, and the second solenoid valve 11 and the third solenoid valve 13 are controlled to be in a closed state. At this time, only the clean water in the clean water tank 3 can be heated and kept warm;

[0039] Alternatively, the first solenoid valve 10 and the third solenoid valve 13 are controlled to be in a closed state, and the second solenoid valve 11 is in an open state. At this time, only the sewage in the gray water tank 5 can be heated and kept warm, and the water temperature in the gray water tank is maintained at 2°C-5°C to prevent the gray water tank 5 from freezing and cracking, and the gray water can be discharged in time;

[0040] Alternatively, the first solenoid valve 10 and the second solenoid valve 11 are controlled to be in a closed state, and the third solenoid valve 13 is controlled to be in an open state. At this time, neither the clean water tank 3 nor the gray water tank 5 is insulated.

[0041] In this embodiment, the first solenoid valve 10 and the second solenoid valve 11 are both normally closed solenoid valves, and the third solenoid valve 13 is a normally open solenoid valve.

[0042] In this embodiment, a heat exchanger 14 is also connected in series to the first connecting pipe 7, and the clean water flowing out of the clean water tank 3 is heated by the heat exchanger 14 so that the user can obtain domestic hot water. When the outdoor ambient temperature is low, if the user wants to use hot water, the heat exchange efficiency of the heat exchanger 14 is low without insulation in the clean water tank 3, and the outlet water temperature and hot water volume cannot meet expectations, or are hot and cold; after the insulation of the clean water tank 3 is turned on, the clean water in the clean water tank 3 is preheated to the rated temperature in advance through the first heating pipeline 4, for example, preheated to 10℃-15℃. When the user wants to use domestic hot water, the preheated clean water is heated again by the heat exchanger 14, which can ensure the stability of the outlet water temperature and water volume.

[0043] Specifically, Figure 2As shown, the heat preservation control system includes a controller 15, a clean water tank water temperature sensor 16 and a gray water tank water temperature sensor 17, the clean water tank water temperature sensor 16 and the gray water tank water temperature sensor 17 are connected to the controller 15, and the first solenoid valve 10, the second solenoid valve 11 and the third solenoid valve 13 are connected to the controller 15. The controller 15 can be a single chip microcomputer. The clean water tank water temperature sensor 16 is arranged in the clean water tank 3, and is used to collect the water temperature in the clean water tank 3. The gray water tank water temperature sensor 17 is arranged in the gray water tank 5, and is used to collect the water temperature in the gray water tank 5. The controller 15 controls the on-off state of the first solenoid valve 10, the second solenoid valve 11 and the third solenoid valve 13 through the corresponding relay 18.

[0044] Furthermore, the thermal insulation control system further includes a clean water tank water level sensor and a gray water tank water level sensor, both of which are connected to the controller 15. The clean water tank water level sensor is used to collect water level data in the clean water tank 3, and the gray water tank water level sensor is used to collect water level data in the gray water tank 5.

[0045] Specifically, when the clean water tank water temperature sensor 16 detects that the water temperature in the clean water tank 3 is lower than 10°C, the controller 15 automatically turns on the clean water tank insulation. At this time, the controller 15 first controls the first solenoid valve 10 to be in an open state, and then controls the third solenoid valve 13 to be in a closed state after a delay of 10 seconds to prevent the antifreeze pipeline from rupturing due to excessive pressure in the pipeline. At this time, the clean water in the clean water tank 3 is heated and kept warm.

[0046] When the clean water tank temperature sensor 16 detects that the water temperature in the clean water tank 3 is higher than 15°, the controller 15 automatically turns off the clean water tank insulation. At this time, the controller 15 first controls the third solenoid valve 13 to be in an open state, and then controls the first solenoid valve 10 to be in a closed state after a delay of 10 seconds to prevent the antifreeze pipeline from rupturing due to excessive pressure in the pipeline.

[0047] When the gray water tank water temperature sensor 17 detects that the water temperature in the gray water tank 5 is lower than 2°C, the controller 15 automatically turns on the gray water tank insulation. At this time, the controller 15 first controls the second solenoid valve 11 to be in an open state, and then controls the third solenoid valve 13 to be in a closed state after a delay of 10 seconds to prevent the antifreeze pipeline from being ruptured due to excessive pressure in the pipeline. At this time, the clean water in the gray water tank 5 is heated and kept warm.

[0048] When the gray water tank temperature sensor 17 detects that the water temperature in the gray water tank 5 is higher than 5°C, the controller 15 automatically turns off the gray water tank insulation. At this time, the controller 15 first controls the third solenoid valve 13 to be in an open state, and then controls the second solenoid valve 11 to be in a closed state after a delay of 10 seconds to prevent the antifreeze pipeline from rupturing due to excessive pressure in the pipeline.

[0049] In summary, the RV water tank insulation and antifreeze system provided by the utility model heats the antifreeze liquid through a water heater, and the heated antifreeze liquid flows into the clean water tank and the gray water tank respectively through the corresponding heating pipes, thereby heating the water in the clean water tank and the gray water tank to prevent the water in the water tank from freezing in a low temperature environment, and the sewage in the gray water tank can be discharged at any time.

[0050] In addition, by collecting water temperature data through the clean water tank water temperature sensor and the gray water tank water temperature sensor, the controller can set different control temperature ranges, starting heating when the temperature is lower than the set temperature, and stopping heating when the temperature is higher than the set temperature.

[0051] Finally, by controlling the switch states of the first solenoid valve, the second solenoid valve and the third solenoid valve through the controller, the flow direction of the antifreeze liquid can be changed, thereby heating each water tank differently.

[0052] Finally, it should be noted that the various technical features of the technical solution of the present application can be combined arbitrarily. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of the claims and specification of the present invention.

Claims

1. A RV water tank insulation and antifreeze system, characterized in that: The invention comprises an antifreeze liquid water tank (1) storing antifreeze liquid, a water heater (2), a first heating pipeline (4) for heating and keeping warm a clean water tank (3), a second heating pipeline (6) for heating and keeping warm a grey water tank (5), and a heat preservation control system; wherein: The water heater (2) is connected to the antifreeze liquid tank (1) via a first connecting pipe (7), and a water pump (8) is provided on the first connecting pipe (7); The first heating pipeline (4) and the second heating pipeline (6) are both connected to the second connecting pipeline (9), the second connecting pipeline (9) is connected to the water heater (2), a first solenoid valve (10) and a second solenoid valve (11) are respectively provided on the water inlet end of the first heating pipeline (4) and the water inlet end of the second heating pipeline (6); the water outlet end of the first heating pipeline (4) and the water outlet end of the second heating pipeline (6) are both in communication with the antifreeze liquid tank (1); A third connecting pipe (12) is also connected to the water outlet end of the second connecting pipe (9), the third connecting pipe (12) is in communication with the antifreeze liquid tank (1), and a third solenoid valve (13) is provided on the third connecting pipe (12); The first solenoid valve (10), the second solenoid valve (11) and the third solenoid valve (13) are all connected to the thermal insulation control system via electrical signals.

2. The RV water tank insulation and antifreeze system according to claim 1, characterized in that: The first heating pipeline (4) comprises a first heating coil, and the first heating coil is arranged in the clean water tank (3); The second heating pipeline (6) comprises a second heating coil, and the second heating coil is arranged in the gray water tank (5).

3. The RV water tank insulation and antifreeze system according to claim 1, characterized in that: The first solenoid valve (10) and the second solenoid valve (11) are both normally closed solenoid valves, and the third solenoid valve (13) is a normally open solenoid valve.

4. The RV water tank insulation and antifreeze system according to claim 1, characterized in that: A heat exchanger (14) is also connected in series to the first connecting pipe (7).

5. The RV water tank insulation and antifreeze system according to claim 1, characterized in that: The heat preservation control system comprises a controller (15), a clean water tank water temperature sensor (16) and a grey water tank water temperature sensor (17); the clean water tank water temperature sensor (16) and the grey water tank water temperature sensor (17) are both connected to the controller (15); and the first solenoid valve (10), the second solenoid valve (11) and the third solenoid valve (13) are all connected to the controller (15).

6. The RV water tank insulation and antifreeze system according to claim 5, characterized in that: The controller (15) controls the first solenoid valve (10), the second solenoid valve (11) and the third solenoid valve (13) through corresponding relays (18).

7. The RV water tank insulation and antifreeze system according to claim 5, characterized in that: The thermal insulation control system further comprises a clean water tank water level sensor and a grey water tank water level sensor, and both the clean water tank water level sensor and the grey water tank water level sensor are connected to the controller (15).

8. The RV water tank insulation and antifreeze system according to claim 5, characterized in that: The controller (15) is a single chip microcomputer.

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