Solar water heater structure for vehicle

Abstract

The application discloses a kind of solar water heater structures for vehicle, including water heater tank, the tank is equipped with inlet and outlet water mechanism and pressure regulating mechanism, the tank is sealed barrel structure and is arranged, the inlet and outlet water mechanism includes shower faucet interface and one-way water inlet valve, the pressure regulating mechanism includes one-way air valve and pressure relief valve;The water heater structure of the application is simple in structure, based on solar energy irradiation on PVC material, heat absorption is carried out to heat the internal sealed cavity, the function of water heater is realized, further set up pressure regulating structure, can ensure water pressure, improve water experience, and further set up heat preservation mechanism, meet the water temperature guarantee demand.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-mounted solar water heaters, in particular to a vehicle-mounted solar water heater structure. BACKGROUND

[0002] Currently, off-road vehicles and recreational vehicle tourism are very popular among many users who love tourism, and because they have to live on the recreational vehicle for a long time, the energy-saving design requirement of the recreational vehicle is very important. At present, the hot water supply mode of the recreational vehicle (such as Chinese patent: CN201820678072.5, an intelligent water heater for a recreational vehicle and an intelligent water heater system for a recreational vehicle), most of which use gasoline power generation, and then use electric energy to supply electric heating pipes, thereby heating water. Energy is inevitably consumed greatly through multiple conversions, and energy waste is more serious if hot water is produced in this way, resulting in a very large energy consumption of the recreational vehicle. Therefore, people need a recreational vehicle hot water supply system with small energy consumption and using solar energy.

[0003] At present, the most representative non-electric heating vehicle-mounted water heater includes engine heat exchange (CN202121357125.1, a vehicle-mounted water heater system based on automobile heat cycle) and solar water heater (CN201921315046.7, a roof-mounted solar water heater), and the vehicle-mounted water heater with relatively more energy-saving characteristics and relatively simple structure is also the most widely used, i.e. solar water heater. The solar water heater is a kind of device that directly absorbs and converts solar heat energy to heat water. The common solar water heater is divided into vacuum tube type solar water heater and flat plate type solar water heater. The vacuum tube type solar water heater is composed of a heat collecting tube, a water storage tank and a support and other related accessories. It mainly relies on the vacuum heat collecting tube to convert solar energy into heat energy. It uses the principle that hot water floats and cold water sinks to make water circulate and obtain the required hot water.

[0004] However, the solar water heaters currently used in the market are generally fixed and installed for household use, and there are some defects in their application on vehicles, including the defects of the existing equipment, such as large structure, unsafe operation, etc. In particular, the solar heat absorption and irradiation surface of the water heater is relatively easy to damage, resulting in a relatively low service life. In addition, the water tank of the vehicle-mounted water heater of the prior art is generally drained by water pump or water weight (the water tank is arranged at a high position), which often leads to poor water pressure and poor bathing experience. The above-mentioned problems of the prior art, such as complex structure, large space occupation, low service life, unstable water pressure and poor experience, restrict the promotion and application of vehicle-mounted water heaters by manufacturers. Therefore, a vehicle-mounted water heater structure with simple structure, reasonable design and long service life is very valuable and necessary. SUMMARY

[0005] In view of the prior art, the purpose of the present application is to provide a simple structure of solar water heater design, which has the characteristics of scientific structure, durability, low cost and convenient production, etc. The water heater of the present application can heat the internal hot water through sunlight absorption, and can form high-pressure water flow based on air pressure regulation, thereby solving the problems of insufficient water supply pressure and poor bathing experience of the existing vehicle-mounted water supply.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a vehicle-mounted solar water heater structure, comprising a water heater tank, a water inlet and outlet mechanism and a pressure regulating mechanism are arranged on the tank, the tank is arranged in a sealed barrel-shaped structure, the water inlet and outlet mechanism comprises a shower faucet interface and a one-way water inlet valve, and the pressure regulating mechanism comprises a one-way air valve and a pressure relief valve.

[0007] As a further arrangement of the above scheme, the tank is made of PVC material, and the tank is colored with black pigment by PVC material.

[0008] As a further arrangement of the above scheme, the one-way air valve is used to control the one-way air intake of the tank, and the pressure relief valve is used to automatically release pressure when the pressure of the tank reaches a threshold value.

[0009] As a further arrangement of the above scheme, the pressure relief valve is further provided with a pull ring, which is used for manual pressure relief.

[0010] As a further arrangement of the above scheme, the one-way air valve is connected with an external air compression device, which is used to compress air towards the tank to enhance the pressure in the tank.

[0011] As a further arrangement of the above scheme, a water heater control center is further included, a pressure detection device, a water level detector and a temperature detector are further arranged on the tank and electrically connected with the control center, a photosensitive sensor is arranged on the outside of the tank, the control center is connected with the external air compression device and is used to control the start or stop of the external air compression device based on the pressure value signal fed back by the pressure detection device, the water level detector and the temperature detector are used to detect the water level and water temperature in the tank, and the detection values are fed back to the control center, and an electromagnetic valve is further arranged on the pipeline on one side of the one-way water inlet valve and connected with the control center.

[0012] As a further arrangement of the above scheme, the tank wall comprises an inner layer and an outer layer, a sealed cavity is arranged between the inner layer and the outer layer, the cavity is connected with the external air compression device, and the external air compression device is used to extract the medium in the cavity to form a vacuum.

[0013] As a further arrangement of the above-mentioned scheme, a hot water circulating pump is arranged between the cavity and the inner layer cavity, and is used for circulating between the cavity and the water in the inner layer.

[0014] With the above-mentioned technology, the water heater of the present application has at least the following effects relative to the prior art:

[0015] 1. The water in the water heater is heated by direct sunlight, which fully utilizes the energy-saving feature. In addition, relative to the existing solar water heater, the black water storage tank body is used as a heat absorbing and heat exchanging pipe in the present application, which not only saves space and structure, but also has a longer service life relative to the heat collecting pipe of the prior art water heater, as the PVC material used in the water storage tank is corrosion-resistant, aging-resistant, and strong against external force impact and collision.

[0016] 2. The pressure structure of the present application includes a pressure relief valve and a one-way air inlet valve. The one-way air inlet valve can meet and ensure the water pressure in the water tank, ensure that the water supply is jetted out, and improve the bathing experience. The pressure relief valve can prevent overcharging and damage to the tank body. It can also prevent excessive internal pressure from causing water inflow difficulties. In addition, under the irradiation of external sunlight, the internal water and air are heated, expand and contract, and the pressure relief valve can also prevent the expansion from affecting the tank body.

[0017] 3. Another embodiment of the present application also has a heat preservation structure, which includes a double-layer structure. When heat preservation is needed, the cavity is evacuated to form a vacuum layer, reducing the outflow of internal heat. In the heating state, the internal water enters the cavity through water circulation, and the heat absorbing and heating water is constantly circulated, ensuring that the water in the water heater is preserved at a temperature that meets the use requirements as much as possible. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic diagram of an embodiment of the present application.

[0019] Figure 2 FIG. 2 is a schematic diagram of the internal structure of the embodiment of the present application.

[0020] Figure 3 FIG. 3 is a structural schematic diagram of another embodiment of the present application.

[0021] FIG. 4 is a structural schematic diagram of another embodiment of the present application. DETAILED DESCRIPTION

[0022] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0023] Example 1:

[0024] like Figures 1-2 The diagram shows a vehicle-mounted solar water heater structure, including a water heater tank 1. The tank 1 is provided with a water inlet / outlet mechanism 2 and a pressure regulating mechanism 3. The tank 1 is arranged in a sealed barrel shape. The water inlet / outlet mechanism 2 includes a shower faucet interface 21 and a one-way water inlet valve 22. The pressure regulating mechanism 3 includes a one-way air valve 31 and a pressure relief valve 32.

[0025] As a further provision of the above scheme, the tank body 1 is made of PVC material, and the PVC material of the tank body 1 is colored with black pigment.

[0026] As a further feature of the above scheme, the one-way air valve 31 is used to control the one-way air intake of the tank 1, and the pressure relief valve 32 is used to automatically release pressure after the pressure of the tank 1 reaches a threshold.

[0027] As a further feature of the above solution, the pressure relief valve 32 is also equipped with an active pull ring 33, which is used for manual pressure relief.

[0028] In Embodiment 1 of this invention, the black PVC tank 1 has an exterior design that allows sunlight to irradiate the surface of the tank 1. The PVC absorbs heat from the sunlight, thus heating the internal medium. Due to the limitations of PVC material, testing shows that the theoretical temperature rise is 60°C, but in practice, it can be maintained at 45°C, meeting and suitable for the user's daily needs. Therefore, based on this temperature, the device of this invention does not require a mixing mechanism; the heated water can be directly drawn out using a shower head for direct use. Furthermore, based on the one-way air valve 32 design of this invention, the user can use existing air pumping technology. The cylinder, vehicle-mounted air compressor, and automatic inflation mechanism can all pressurize the tank 1 to ensure the water pressure at the outlet, maintain water flow, and improve the user experience. In addition, the present invention also includes a pressure relief valve 32, which is an automatic pressure valve (similar to the principle of a pressure cooker). The purpose of this design is threefold: first, to prevent the user from inflating the tank too high, which could lead to excessive power consumption from the external inflation device; second, to prevent excessive internal temperature rise and expansion caused by sunlight exposure during use (as in a pressure cooker); and third, to prevent water from entering the tank due to the water pressure being lower than the internal pressure.

[0029] With the above-described structural design, the vehicle-mounted solar water heater of the present invention has a simple structure and a scientific design. Compared with existing water heaters, it is made entirely of black PVC material, making it structurally resistant to damage and less prone to problems. It has a long service life, and the tank 1 has a simple structure that is easy to install and disassemble. It is suitable for use in RVs and off-road vehicles after they arrive at their destination or park at any location. If there is no water pipe or the water pipe is not long enough, the tank 1 can be directly disassembled and taken to a water source for filling, which is very convenient. In addition, it is small in size and can carry more on the vehicle. Its structural design allows it to be placed on the roof or side wall of the vehicle as long as it can be fixed. The water can also be used for other purposes, making it highly capable of carrying water resources.

[0030] Example 2:

[0031] As a further setting of the above scheme, such as Figure 3 As shown in Embodiment 2, an external air compressor is connected to the one-way air valve 31. This external air compressor is used to compress air into the tank 1 to increase the pressure inside the tank 1. It also includes a water heater control center. The tank 1 is equipped with a pressure detection device, a water level detector, and a temperature detector, all electrically connected to the control center. A photosensitive sensor is installed on the outside of the tank 1. The control center is connected to the external air compressor and is used to control the external air compressor to start or stop operating based on the pressure signal fed back by the pressure detection device. The water level detector and temperature detector are used to monitor the pressure inside the tank 1. The water level and temperature inside the tank are detected, and the detected values ​​are fed back to the control center. The control center is also connected to a solenoid valve located on a pipe on one side of the one-way inlet valve 22. The tank body 1 wall includes an inner layer 11 and an outer layer 12. A sealed cavity 13 is provided between the inner layer 11 and the outer layer 12. The cavity 13 is connected to an external air compressor. The external air compressor is used to extract the medium in the cavity 13 to form a vacuum. A hot water circulation pump 14 is connected between the cavity 13 and the inner cavity of the inner layer 11. The hot water circulation pump 14 is used to circulate the water in the cavity 13 and the inner layer 11.

[0032] It is worth noting that the hot water circulation pump 14 is fixedly installed on the tank 1 or externally connected. Its main purpose is to thoroughly circulate the water inside and outside the tank 1, ensuring that cold water enters the cavity 13 as much as possible. Through continuous circulation, it ensures that the water in the inner layer 11 and the cavity 13 maintains a consistent temperature. Based on the premise of not losing the above-mentioned functional effect, the structure can be adjusted to adapt to the product. For example, the inlet and outlet of the hot water circulation pump 14 can be set at both ends of the inner layer 1 and the cavity 13 respectively. When working, the hot water circulation pump 14 draws water from one end of the inner layer 11 and fills in hot water from the other side. This ensures that cold water is drawn out as much as possible to be heated in the cavity 13. In addition, the material of the inner layer 11 in Embodiment 2 can be set with insulation material according to the insulation requirements. In conjunction with the vacuum layer, a better insulation effect can be achieved.

[0033] This embodiment is an improvement on the basis of embodiment 1, the main feature is that the above scheme is lack of insulation, resulting in the area where the temperature difference between day and night is too large, the water temperature in the tank 1 is reduced too fast, so as to cause the problem of poor use experience, and further design;

[0034] The working principle of this embodiment 2 is:

[0035] S: the control center obtains the light intensity signal of the outside world based on the photosensitive sensor, and obtains the water signal in the tank 1 through the water level and water temperature detector. The control center can be designed with PLC, and various parameter thresholds are preset in advance. Through signal acquisition by the sensor, various functions are triggered to realize the switching of various working states. It is worth noting that the following states are not in conflict, and convenience for use is the priority, that is, the priority includes S3>S1>S2;

[0036] S1 heating state: based on the numerical information obtained by S, when the water temperature is lower than the set threshold and the light intensity meets the heating demand, the control center controls the hot water circulating pump 14 to draw the water in the inner layer 11 into the cavity 13, which not only removes the vacuum insulation state formed in the cavity 13 in the insulation state, but also continuously circulates the water between the cavity 13 and the inner layer 11, so as to uniformly heat the water in the tank 1;

[0037] S2 insulation state: based on the process of S1 heating state, when the water temperature detector detects that the water temperature reaches the set threshold (the temperature reaches the set value and does not need to be heated) or there is no temperature difference change in a certain period of time (the external environment cannot provide heating effect), the control center controls the hot water circulating pump 14 to draw the water in the cavity 13 unidirectionally. At this time, the external air compression equipment sends air to ensure that the heated water enters the inner layer 11 as much as possible. After the water in the cavity 13 is drawn out, the hot water circulating pump 14 is closed, so that the cavity 13 and the inner layer 11 are air-tightly isolated. The control center drives the external air compression equipment to work to draw out the air in the cavity 13, so that the cavity 13 forms a vacuum insulation layer again and enters the insulation state;

[0038] It is worth noting that when the internal water temperature decreases to a certain extent (room temperature), whether the insulation is removed or not, the heat absorption and heating will be carried out, and the insulation state will be removed. The design has little significance, but it facilitates the start of S1 heating state;

[0039] S3 use state: the control center obtains the pressure in the inner layer 11 based on the pressure detection device. The control center adjusts the pressure in the inner layer 11 by inflating during the use of water, so as to ensure the stability of water pressure.

[0040] In use, the central mechanism of the present application controls the water temperature based on the feedback data from the water temperature detector, and adjusts the water temperature in the tank 1 through the one-way water inlet valve and the hot water circulating pump 14. When in use, the inner layer 11 space may be completely occupied by water, and cold water cannot enter. Therefore, the cavity 13 can be opened, and the hot water circulating pump 14 can form a water flow to achieve water temperature adjustment, or a cold and hot water mixing valve can be provided at the water outlet to achieve the water temperature adjustment effect.

[0041] In addition, the inner layer 11 of the present application is made of common heat preservation and insulation materials, the outer layer 12 is made of PVC material, and heat absorbing materials can be added and the outer surface or PVC material can be treated by blackening the color to improve the heat absorbing capacity.

[0042] As a further setting of the above-mentioned scheme, the present application can also refer to the prior art, and an electric heating mechanism is arranged in the cavity 13 to ensure that the water can be warmed in an environment with insufficient light to ensure use.

[0043] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. A structure for a vehicle-mounted solar water heater, characterized in that: The utility model provides a kind of water heater, including water heater tank (1), the tank (1) is provided with inlet and outlet water mechanism (2) and pressure regulating mechanism (3), the tank (1) is arranged in sealed barrel structure, the inlet and outlet water mechanism (2) includes shower faucet interface (21) and one-way water inlet valve (22), the pressure regulating mechanism (3) includes one-way air valve (31) and pressure relief valve (32);Still including water heater control hub, the tank (1) is also provided with pressure detection device, water level detector and temperature detector electrically connected with control hub arrangement, the outside of the tank (1) is provided with photosensitive sensor, the control hub is connected with external air compression equipment, and it is used for controlling external air compression equipment to start or stop work based on the pressure value signal feedback of pressure detection device, the water level detector, temperature detector are used to detect the water level, water temperature in the tank (1), and detection value is fed back to control hub, the control hub is also connected with electromagnetic valve on one-way water inlet valve (22) side pipeline;The tank (1) wall includes inner layer (11) and outer layer (12), the sealed cavity (13) is arranged between the inner layer (11) and the outer layer (12), the cavity (13) is connected with external air compression equipment, and the external air compression equipment is used to extract medium in the cavity (13) to form vacuum insulation layer, reduce the outflow of internal heat and keep warm;Hot water circulating pump (14) is connected between the cavity (13) and the inner cavity of the inner layer (11), and the hot water circulating pump (14) is used to circulate between the cavity (13) and the water in the inner layer (11), the hot water in the cavity (13) is circulated to the inner cavity of the inner layer (11) by hot and cold water circulation to the inner cavity of the inner layer (11) and the water in the cavity (13) after being heated by solar radiation, after external sunlight cannot continue to heat the cavity (13), the cavity (13) is emptied to form vacuum insulation layer.

2. The solar water heater structure for vehicle according to claim 1, characterized in that: The tank (1) is made of PVC material, and the tank (1) is adjusted by black pigment with PVC material.

3. The solar water heater structure for vehicle according to claim 1, characterized in that: The one-way air valve (31) is used for controlling one-way air intake of the tank (1), and the pressure relief valve (32) is used for automatic pressure relief when the pressure of the tank (1) reaches a threshold value.

4. The solar water heater structure for vehicle according to claim 1 or 3, characterized in that: The pressure relief valve (32) is also provided with a pull ring (33), and the pull ring (33) is used for manual pressure relief.

5. The solar water heater structure for vehicle use according to claim 1 or 3, characterized by: The one-way air valve (31) is connected with external air compression equipment, and the external air compression equipment is used for compressing air towards the tank (1) to enhance the pressure in the tank (1).

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