A low voltage driven truck water heater
Patent Information
- Application Number
- CN202522179520.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-15
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-10-15
AI Technical Summary
现有的热水器存在以下问题：热水器的体积较大，货车内可以安放的空间小，不适用于车载安装，工作过程中需要的电压大，不适配车载电瓶，需要另外准备合适的供电装置，十分麻烦，为此，我们提出一种低压驱动的货车热水器
[0011]与现有技术相比，本实用新型的有益效果是：本低压驱动的货车热水器，具有以下好处：
Smart Images
Figure CN224707043U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water heater technology, specifically a low-pressure driven truck water heater. Background Technology
[0002] Truck transportation (especially long-haul logistics) is characterized by long operating hours, limited space, and distance from fixed living facilities. The traditional method of relying on service areas and restaurants along the way to obtain hot water is inconvenient. In order to meet the basic living water needs of drivers, improve vehicle comfort, and reduce dependence on external facilities, water heaters are usually installed on trucks. In existing water heaters, cold water enters the sealed inner tank through the inlet pipe. After the user sets the target temperature, the electric heating element generates heat due to the Joule effect and directly transfers it to the cold water in the inner tank. After heating is completed, the insulation layer outside the inner tank reduces heat loss and maintains the water temperature. When the user turns on the hot water tap, cold water continuously enters the inner tank from the inlet pipe, and hot water flows out from the outlet pipe. Existing water heaters have the following problems: they are large in size, have limited space to be installed in trucks, are not suitable for vehicle installation, require high voltage during operation, are not compatible with vehicle batteries, and require a separate suitable power supply device, which is very troublesome. Therefore, we propose a low-voltage driven truck water heater. Utility Model Content
[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a low-pressure driven truck water heater that is small in size and suitable for vehicle installation. It can maintain the internal water temperature at the set temperature, is low-pressure driven and can be adapted to the vehicle battery, and can display the internal temperature on the controller's display screen at any time. The driver can obtain hot water at the appropriate temperature according to his needs, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a low-pressure driven truck water heater, comprising a shell, with support rings on both the left and right sides of the inner wall of the shell, and an inner tank between the two support rings. An inspection port is provided on the right side of the shell, and an end cap is fitted onto the outside of the inspection port. A controller is located on the lower right side of the end cap. A fixing seat is provided on the right side of the outer surface of the inner tank, and mounting holes are provided on both the upper and lower sides of the right side of the fixing seat. A 24-volt heating element and a temperature detector are respectively installed inside the upper and lower mounting holes. The heating end of the 24-volt heating element extends into the interior of the inner tank, and the sensing end of the temperature detector passes through the wall of the inner tank and is inserted into the interior of the inner tank. It is small in size and suitable for vehicle installation, can maintain the internal water temperature at a set temperature, can be driven by low pressure to be compatible with vehicle batteries, and can display the internal temperature on the controller's display screen at any time, allowing the driver to obtain hot water at a suitable temperature as needed.
[0005] Furthermore, the input terminal of the controller is electrically connected to an external power source, the input terminal of the 24-volt heating element is electrically connected to the output terminal of the controller, and the output terminal of the temperature detector is electrically connected to the input terminal of the controller, which facilitates the normal operation of the control equipment.
[0006] Furthermore, the lower outer surface of the inner liner is provided with evenly distributed through holes. From left to right, the three through holes are sequentially connected to a drain pipe, a hot water drain pipe, and a cold water inlet pipe, which facilitates the connection between the inner liner and the outside world.
[0007] Furthermore, the lower ends of the sewage pipe, hot water drain pipe, and cold water inlet pipe are all connected in series with solenoid valves. The outlet of the solenoid valve on the hot water drain pipe is provided with a delivery pipe. The input end of the solenoid valve is electrically connected to the output end of the controller, which facilitates the control of the entry of cold water and the discharge of hot water.
[0008] Furthermore, a cavity is formed between the outer shell and the inner liner, and the cavity is filled with a layer of insulating cotton to reduce heat loss.
[0009] Furthermore, mounting brackets are fixedly connected to the left and right sides of the rear side of the outer surface of the housing, and threaded positioning holes are provided on the upper and lower sides of the front side of the mounting brackets to facilitate the installation of the equipment in a suitable position.
[0010] Furthermore, the left side of the end cap is provided with a circular protrusion, the outer surface of the circular protrusion is provided with an external thread, the inner wall of the inspection port is provided with an internal thread, and the external thread and the internal thread are threadedly connected to each other, which facilitates the installation of the end cap.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This low-pressure driven truck water heater has the following advantages: The outer shell is 70cm-80cm in length and 38cm-45cm in diameter, making it small enough for vehicle installation. The temperature sensor monitors the water temperature inside the tank in real time and can maintain the internal water temperature at the set temperature. It uses a 24V heating element for heating, which can be driven by low voltage and is compatible with vehicle batteries. The internal temperature can be displayed on the controller's screen at any time, allowing the driver to obtain hot water at the appropriate temperature as needed. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of point A of this utility model.
[0013] In the diagram: 1 Outer shell, 2 Support ring, 3 Inner liner, 4 End cap, 5 Controller, 6 24V heating element, 7 Temperature detector, 8 Drain pipe, 9 Hot water drain pipe, 10 Cold water inlet pipe, 11 Solenoid valve, 12 Delivery pipe, 13 Insulation layer, 14 Mounting bracket, 15 Threaded positioning hole, 16 Circular protrusion, 17 External thread, 18 Internal thread. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] Please see Figure 1-3This embodiment provides a technical solution: a low-pressure driven truck water heater, including a shell 1 (the shell 1 is a cylindrical shape with rounded protrusions on both sides, with a length of 70cm-80cm and a diameter of 38cm-45cm, small in size, suitable for vehicle installation), with support rings 2 on both sides of the inner wall of the shell 1, and an inner tank 3 between the two support rings 2. The material of the inner tank 3 can be selected according to actual needs, and the optional materials include, but are not limited to, stainless steel inner tank and enamel inner tank. An inspection port is opened on the right side of the shell 1, and an end cover 4 is installed on the outside of the inspection port. A controller 5 is located on the lower right side of the end cover 4 (the controller 5 is a controller with a display screen, which can be an STC89C52, and the driver can...). The internal water temperature can be displayed on the screen. A mounting base is located on the right side of the outer surface of the inner tank 3. Mounting holes are located on both the upper and lower sides of the right side of the mounting base. A 24V heating element 6 and a temperature sensor 7 are respectively installed inside the upper and lower mounting holes. The heating end of the 24V heating element 6 extends into the interior of the inner tank 3, and the sensing end of the temperature sensor 7 penetrates the wall of the inner tank 3 and is inserted into its interior. (The temperature sensor 7 can be an NTC thermistor sensor. The resistance value of an NTC thermistor decreases exponentially with increasing temperature. The temperature is measured by the change in resistance value, and the measured temperature data is transmitted to the controller 5 and displayed on the controller 5's screen.) The input terminal of the controller 5 is electrically connected to an external power source, and the input terminal of the 24V heating element 6 is electrically connected to an external power source. The output of the controller 5 is connected to the output of the temperature detector 7, which is electrically connected to the input of the controller 5. The lower outer surface of the inner liner 3 has evenly distributed through holes. From left to right, three through holes are sequentially connected to a drain pipe 8, a hot water drain pipe 9, and a cold water inlet pipe 10. A solenoid valve 11 is connected in series at the lower ends of each of the three through holes. A delivery pipe 12 is located at the outlet of the solenoid valve 11 on the hot water drain pipe 9. The input of the solenoid valve 11 is electrically connected to the output of the controller 5. A cavity is formed between the outer shell 1 and the inner liner 3, and the cavity is filled with an insulation layer 13 (the insulation layer 13 can be made of glass wool). The left and right sides of the rear outer surface of the outer shell 1 are fixedly connected to mounting... The mounting bracket 14 has threaded positioning holes 15 on both the upper and lower sides of its front side. The left side of the end cover 4 has a circular protrusion 16 with external threads 17 on its outer surface and internal threads 18 on the inner wall of the inspection port. The external threads 17 and internal threads 18 are threaded together. The driver places the outer casing 1 in a suitable position using the mounting bracket 14, and uses bolts to pass through the threaded positioning holes 15 to fix the mounting bracket 14 and the outer casing together in a suitable position on the truck. Then, the outlet of the delivery pipe 12 is connected to a faucet, and the solenoid valve 11 on the cold water inlet pipe 10 is connected to the water supply pipe. Finally, the vehicle battery is connected to the positive and negative terminals of the 24V power supply on the control circuit inside the water heater to power the water heater. During operation...The driver first sets the desired hot water temperature via the display screen on controller 5. When the temperature sensor 7 detects that the water temperature inside the inner tank 3 is lower than the set temperature, the 24-volt heating element 6 (a resistance heating element) is activated by controller 5. After being powered on, the 24-volt heating element 6 generates heat due to the Joule effect, which is transferred to the cold water in the inner tank 3 to heat it. When the temperature sensor 7 detects that the water temperature inside the inner tank 3 has reached the set temperature, the 24-volt heating element 6 stops working. The presence of the insulation layer 13 reduces heat loss and maintains the water temperature. The driver can then turn on the hot water when needed. The faucet switch and the solenoid valves 11 on the hot water drain pipe 9 and the cold water inlet pipe 10 allow cold water to continuously enter the inner tank 3 through the water supply pipe and the cold water inlet pipe 10. Hot water flows out from the hot water drain pipe 9 and the delivery pipe 12. Waste inside the inner tank 3 can be discharged to the outside of the outer shell 1 through the drain pipe 8. For maintenance, rotate the end cap 4 to release the threaded connection between the external thread 17 and the internal thread 18, then remove the end cap for maintenance. After maintenance, rotate the end cap 4 in the opposite direction to reinstall it at the maintenance port of the outer shell 1. The support ring 2 maintains the inner tank 3 in a suitable position within the outer shell 1.
[0016] The working principle of the low-pressure driven truck water heater provided by this utility model is as follows: The driver places the outer casing 1 in a suitable position using the mounting bracket 14, and uses bolts to pass through the threaded positioning holes 15 to fix the mounting bracket 14 together with the outer casing in a suitable position on the truck. Then, the water outlet of the delivery pipe 12 is connected to the faucet, and the solenoid valve 11 on the cold water inlet pipe 10 is connected to the water supply pipe. After that, the vehicle battery is connected to the positive and negative terminals of the 24V power supply on the control circuit inside the water heater to supply power to the water heater. When working, the driver first sets the desired hot water temperature through the display screen on the controller 5. When the temperature detector 7 detects that the water temperature in the inner tank 3 is lower than the set temperature, the 24V heating element 6 (a resistance heating element) is activated by the controller 5. After being energized, the 24V heating element 6 generates heat due to the Joule effect and transfers it to the inner tank. The cold water in tank 3 is heated. When the temperature sensor 7 detects that the water temperature in the inner tank 3 has reached the set temperature, the 24V heating element 6 stops working. Due to the presence of the insulation cotton layer 13, heat loss is reduced and the water temperature is maintained. When the driver needs hot water, he / she turns on the faucet and the solenoid valve 11 on the hot water drain pipe 9 and the cold water inlet pipe 10. Cold water continuously enters the inner tank 3 through the water supply pipe and the cold water inlet pipe 10. Hot water flows out from the hot water drain pipe 9 and the delivery pipe 12. Dirt in the inner tank 3 can be discharged to the outside of the outer shell 1 through the drain pipe 8. When maintenance is required, turn the end cover 4 to release the thread engagement between the external thread 17 and the internal thread 18. Then the end cover can be removed for maintenance. After maintenance, turn the end cover 4 in the opposite direction and reinstall the end cover at the maintenance port of the outer shell 1. Due to the presence of the support ring 2, the inner tank 3 is maintained in a suitable position inside the outer shell 1.
[0017] It is worth noting that the controller 5 disclosed in the above embodiments can be an STC89C52, the temperature detector 7 can be an NTC temperature sensor, and the controller 5 controls the operation of the 24V heating tube 6, the temperature detector 7 and the solenoid valve 11 using methods commonly used in the prior art.
[0018] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A low-pressure driven truck water heater, characterized in that: The outer shell (1) is provided with support rings (2) on both the left and right sides of the inner wall of the outer shell (1). An inner liner (3) is provided between the two support rings (2). An inspection port is provided on the right side of the outer shell (1). An end cap (4) is installed on the outside of the inspection port. A controller (5) is provided on the lower side of the right side of the end cap (4). A fixing seat is provided on the right side of the outer surface of the inner liner (3). Mounting holes are provided on both the upper and lower sides of the right side of the fixing seat. A 24-volt heating tube (6) and a temperature detector (7) are respectively installed inside the upper and lower mounting holes. The heating end of the 24-volt heating tube (6) is inserted into the interior of the inner liner (3). The detection end of the temperature detector (7) is inserted into the interior of the inner liner (3) through the wall of the inner liner (3).
2. The low-pressure driven truck water heater according to claim 1, characterized in that: The input terminal of the controller (5) is electrically connected to an external power source, the input terminal of the 24-volt heating tube (6) is electrically connected to the output terminal of the controller (5), and the output terminal of the temperature detector (7) is electrically connected to the input terminal of the controller (5).
3. The low-pressure driven truck water heater according to claim 1, characterized in that: The inner liner (3) has evenly distributed through holes on the lower side of its outer surface. From left to right, the three through holes are connected in sequence to a drain pipe (8), a hot water drain pipe (9), and a cold water inlet pipe (10).
4. A low-pressure driven truck water heater according to claim 3, characterized in that: The lower ends of the sewage pipe (8), hot water drain pipe (9) and cold water inlet pipe (10) are all connected in series with solenoid valves (11). The outlet of the solenoid valve (11) on the hot water drain pipe (9) is provided with a conveying pipe (12). The input end of the solenoid valve (11) is electrically connected to the output end of the controller (5).
5. A low-pressure driven truck water heater according to claim 1, characterized in that: A cavity is formed between the outer shell (1) and the inner liner (3), and the cavity is filled with a thermal insulation layer (13).
6. A low-pressure driven truck water heater according to claim 1, characterized in that: Mounting brackets (14) are fixedly connected to the left and right sides of the rear side of the outer surface of the outer shell (1), and threaded positioning holes (15) are opened on the upper and lower sides of the front side of the mounting brackets (14).
7. A low-pressure driven truck water heater according to claim 1, characterized in that: The left side of the end cap (4) is provided with a circular protrusion (16), the outer surface of the circular protrusion (16) is provided with an external thread (17), the inner wall of the inspection port is provided with an internal thread (18), and the external thread (17) and the internal thread (18) are threaded together.