Vehicle-mounted electric heater and mounting mechanism thereof

Abstract

The utility model discloses a vehicle-mounted electric heater and an installation mechanism thereof, the vehicle-mounted electric heater comprises a PVC housing and a heating inner container, the heating inner container is coaxially distributed on the inner side of the PVC housing, an annular cavity is arranged between the PVC housing and the heating inner container, a thermal insulation layer is filled in the annular cavity, an electric heater is installed on the end portion of the inner side of the heating inner container, and the electric heater is installed on the inner side of the heating inner container. The water heater is used for heating water in the inner container. According to the utility model, by opening the end part of the PVC shell and regularly opening the sealing disc and disconnecting the circuit wiring end of the electric heater and the pipeline structures on the two sides of the pipeline connector in a power-off state, the heating liner can be conveniently detached and maintained, scale attached to the inner wall of the heating liner and the outer wall of the electric heater can be scraped and cleaned, and the heating efficiency is ensured; the vehicle-mounted electric heater can be reset after being cleaned, the heat preservation layer is replaced, the heat preservation effect of the heater is guaranteed, and the working efficiency of the vehicle-mounted electric heater after being used for a long time is improved.

Description

Technical Field

[0001] This utility model relates to the field of water heaters, and in particular to vehicle-mounted electric heaters and their installation mechanisms. Background Technology

[0002] Truck drivers often find themselves unable to take hot showers while transporting goods because they cannot leave their trucks for extended periods. To improve driver comfort, vehicle-mounted heaters have emerged in the prior art. For example, Chinese Patent Application No. 201521002304.8 discloses a vehicle-mounted water heater comprising an insulated inner tank, a heating mechanism, and a submersible pump. The insulated inner tank is connected to the vehicle; the heating mechanism is mounted on the inner tank; the submersible pump is connected to the inlet of the inner tank, and an outlet is located on the side wall of the inner tank. When the water level inside the inner tank is low, the submersible pump can be activated to inject water into the inner tank through the inlet; the heater heats the water inside the inner tank, while the inner tank also provides insulation. This design ensures that drivers can always take hot showers during their journeys, making their travels more comfortable.

[0003] However, the vehicle-mounted water heaters provided by the above solutions are inconvenient to install and maintain. After long-term use, scale will accumulate on the inner wall of the insulation tank and the outer wall of the heater, affecting heating efficiency and easily causing blockages in the pipes. Hygiene will also be affected. If not maintained in time, the product's lifespan will be shortened. In addition, the cost of modifying the vehicle body for this solution is high, making it difficult to promote and use.

[0004] Therefore, it is necessary to invent and develop vehicle-mounted electric heaters and their installation mechanisms to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to address the shortcomings of the prior art by providing a vehicle-mounted electric heater and its installation mechanism, which facilitates the installation, disassembly, cleaning and maintenance of the vehicle-mounted electric heater, ensures heating efficiency, improves the hygiene of the water body, and extends the service life of the vehicle-mounted electric heater. After cleaning, the device is reset and the insulation layer is replaced to ensure the heat preservation effect of the heater and improve its working efficiency after long-term use.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A vehicle-mounted electric heater includes a PVC outer shell and a heating inner tank. The heating inner tank is coaxially distributed inside the PVC outer shell, and an annular cavity is provided between the PVC outer shell and the heating inner tank. The annular cavity is filled with a heat insulation layer. An electric heater is installed at the inner end of the heating inner tank for heating the water inside the heating inner tank.

[0008] One end of the PVC shell is sealed and fixed to the chassis shell, and the other end is detachably installed with a cover plate. A buffer is provided inside the PVC shell, and the buffer is located between the end of the heating inner liner and the chassis shell. Multiple sets of positioning blocks are fixedly connected to the outer side of the end of the heating inner liner. The number of positioning blocks in each set is set to two, and a positioning slot is formed between the two positioning blocks. A positioning plate corresponding to the positioning slot is fixedly connected to one side of the chassis shell.

[0009] A water inlet pipe is installed through the bottom of the heating inner tank, and a water outlet pipe is installed through the top of the heating inner tank. The water outlet pipe is designed as an arc-shaped section that fits against the outer wall of the heating inner tank. Both the water inlet pipe and the water outlet pipe are equipped with pipe connectors at their bottom ends, and both the water inlet pipe and the water outlet pipe are connected to guide water pipes through the pipe connectors. The two guide water pipes are respectively connected to a first water pump and a second water pump, and the first water pump and the second water pump are respectively corresponding to the water inlet pipe and the water outlet pipe.

[0010] Preferably, the bottom of the PVC shell has two through holes, each corresponding to a water guide pipe. The inlet and outlet pipes are made of rigid material, while the water guide pipes are made of flexible material.

[0011] Preferably, the inner end of the PVC shell is provided with an internal thread, and a threaded ring is fixedly connected to one side of the cover plate, and the threaded ring is threadedly connected to the PVC shell.

[0012] Preferably, one end of the heating inner liner is open, and a sealing disc is fastened to the open end of the heating inner liner by bolts. Sealing gaskets are provided between the sealing disc and the end of the heating inner liner, as well as between the cover plate and the PVC outer shell.

[0013] Preferably, the heating inner tank is equipped with a temperature sensor and a water level sensor, which are used to sense the temperature and water level information of the water inside the heating inner tank, respectively. A microcontroller is provided at the connection end of the temperature sensor and the water level sensor. The input and output ends of the microcontroller are electrically connected to an A / D converter and a D / A converter, respectively. Both the temperature sensor and the water level sensor are electrically connected to the A / D converter. The connection end of the microcontroller is electrically connected to a display. The electric heater, the first water pump and the second water pump are both electrically connected to the D / A converter.

[0014] Preferably, the control circuit of the electric heater is equipped with a temperature controller electrically connected to the microcontroller for setting the heating temperature of the water by the electric heater. The chassis has an installation cavity inside, and the temperature controller and the microcontroller are arranged in the installation cavity. The display is embedded in the chassis.

[0015] Preferably, a remote control module is also installed inside the chassis, and the remote control module is electrically connected to the microcontroller for remote collaboration between the microcontroller and the vehicle system.

[0016] Preferably, the insulation layer is made of foam or sponge, and the cushioning element is made of spring or rubber pad.

[0017] The mounting mechanism for the vehicle-mounted electric heater includes a mounting base and an annular sleeve. The mounting base is detachably mounted to the vehicle body by bolts. The annular sleeve is slidably fitted onto the outside of the PVC shell. The outer side of the annular sleeve has a slot, and a tightening strap is embedded in the slot. The two ends of the tightening strap are respectively fixed to the two ends of the mounting base by bolts. The lower surface of the mounting base has a groove that matches the annular sleeve and the PVC shell.

[0018] Preferably, the number of the combined seat and the annular sleeve are corresponding, and at least two sets are set. Each set has two combined seats and two annular sleeves, and they are symmetrically distributed about the central axis of the PVC shell. The two ends of the combined seat are respectively provided with a first bidirectional lead screw and a second bidirectional lead screw, and multiple sets of combined seats are symmetrically distributed on the first bidirectional lead screw and the second bidirectional lead screw.

[0019] This utility model has the following beneficial effects:

[0020] 1. By opening the end of the PVC shell, and in the power-off state, periodically open the sealing plate to disconnect the circuit terminals of the electric heater and the pipe structure on both sides of the pipe connector. This facilitates the removal and maintenance of the heating inner tank. Scrape and clean the scale adhering to the inner wall of the heating inner tank and the outer wall of the electric heater to ensure heating efficiency, improve the hygiene of the water, and extend the service life of the vehicle-mounted electric heater. After cleaning, reset the device and replace the insulation layer to ensure the heat preservation effect of the heater and improve its working efficiency after long-term use.

[0021] 2. Prefabricated components are produced according to planned dimensions and then assembled into a vehicle-mounted electric heater. Two annular sleeves are fitted onto the outside of the PVC shell of the vehicle-mounted electric heater. The first and second bidirectional lead screws and the assembly seat are combined, and a tightening strap is installed on the corresponding assembly seat and the annular sleeves to fix the assembly. When the vehicle-mounted electric heater is installed on the vehicle body, holes are drilled at the installation location on the vehicle body. The first and second bidirectional lead screws are rotated in opposite directions simultaneously to allow the assembly seats on both sides to move synchronously relative to each other, so that the mounting holes of the assembly seats are aligned with the drilling positions. Then, bolts are used to install it. The modification cost to the vehicle body is low and it is easy to promote and use. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of the vehicle-mounted electric heater and its mounting mechanism provided by this utility model;

[0023] Figure 2 A perspective view of the main structure of the vehicle-mounted electric heater and its mounting mechanism provided for this utility model;

[0024] Figure 3 This utility model Figure 2 A three-dimensional cross-sectional view of the structure shown.

[0025] Figure 4 This utility model Figure 2 First-view exploded view of the structure shown;

[0026] Figure 5 This utility model Figure 2 A second-view exploded view of the structure shown.

[0027] Figure 6 This utility model Figure 2 Exploded view of the structure shown in the third perspective;

[0028] Figure 7 The control flowchart of the vehicle-mounted electric heater system provided by this utility model.

[0029] Among them are:

[0030] PVC outer shell - 1; Heating inner liner - 2; Insulation layer - 3; Electric heater - 4; Chassis shell - 5; Cover plate - 6; Buffer - 7; Positioning block - 8; Positioning clamp plate - 9; Inlet pipe - 10; Outlet pipe - 11; Pipe connector - 12; Guide pipe - 13; First water pump - 14; Second water pump - 15; Through hole - 16; Sealing plate - 17; Temperature sensor - 18; Water level sensor - 19; Microcontroller - 20; Display - 21; Thermostat - 22; Remote control module - 23; Combination base - 24; Ring-shaped clamp - 25; Fastening strap - 26; First bidirectional lead screw - 27; Second bidirectional lead screw - 28. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific preferred embodiments.

[0032] In the description of this utility model, it should be understood that the terms "left side," "right side," "upper part," "lower part," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. "First," "second," etc., do not indicate the importance of the components, and therefore should not be construed as a limitation of this utility model. The specific dimensions used in this embodiment are only for illustrating the technical solution and do not limit the protection scope of this utility model.

[0033] like Figure 1-7As shown, the vehicle-mounted electric heater includes a PVC outer shell 1 and a heating inner tank 2. The heating inner tank 2 is coaxially distributed inside the PVC outer shell 1, and an annular cavity is provided between the PVC outer shell 1 and the heating inner tank 2. The annular cavity is filled with a heat insulation layer 3. An electric heater 4 is installed at the inner end of the heating inner tank 2 for heating the water inside the heating inner tank 2.

[0034] One end of the PVC outer shell 1 is sealed and fixed with the chassis shell 5, and the other end is detachably installed with a cover plate 6. The PVC outer shell 1 is provided with a buffer 7, and the buffer 7 is located between the end of the heating inner liner 2 and the chassis shell 5. Multiple sets of positioning blocks 8 are fixedly connected to the outer side of the end of the heating inner liner 2. The number of positioning blocks 8 in each set is set to two, and a positioning slot is formed between the two positioning blocks 8. A positioning plate 9 corresponding to the positioning slot is fixedly connected to one side of the chassis shell 5.

[0035] A water inlet pipe 10 is installed through the bottom of the heating inner tank 2, and a water outlet pipe 11 is installed through the top of the heating inner tank 2. The water outlet pipe 11 is designed as an arc-shaped section that fits the outer wall of the heating inner tank 2. Both the water inlet pipe 10 and the water outlet pipe 11 are equipped with pipe connectors 12 at their bottom ends, and both the water inlet pipe 10 and the water outlet pipe 11 are connected to guide water pipes 13 through the pipe connectors 12. The two guide water pipes 13 are respectively connected to a first water pump 14 and a second water pump 15, and the first water pump 14 and the second water pump 15 correspond to the water inlet pipe 10 and the water outlet pipe 11, respectively.

[0036] Furthermore, in the above technical solution, the bottom of the PVC shell 1 is provided with two through holes 16, which correspond to two water guide pipes 13 respectively. The water inlet pipe 10 and the water outlet pipe 11 are both made of rigid pipes, while the water guide pipes 13 are made of flexible pipes, which facilitates the assembly and installation of the device.

[0037] Furthermore, in the above technical solution, the inner end of the PVC shell 1 is provided with an internal thread, and a threaded ring is fixedly connected to one side of the cover plate 6. The threaded ring is threadedly connected to the PVC shell 1, which facilitates the assembly and installation of the PVC shell 1. Moreover, the above assembly method is only a preferred embodiment given by this utility model. The assembly and connection of this structure can also be achieved by using glue sealing.

[0038] Furthermore, in the above technical solution, one end of the heating inner liner 2 is set as an opening, and a sealing disc 17 is fastened to the opening end of the heating inner liner 2 by bolts. Sealing gaskets are provided between the sealing disc 17 and the end of the heating inner liner 2, and between the cover plate 6 and the PVC outer shell 1. The sealing gaskets are made of rubber material to ensure the airtightness of the heating inner liner 2.

[0039] Furthermore, in the above technical solution, a temperature sensor 18 and a water level sensor 19 are provided inside the heating inner tank 2, which are used to sense the temperature information and water level information of the water inside the heating inner tank 2, respectively. A microcontroller 20 is provided at the connection end of the temperature sensor 18 and the water level sensor 19. The input end and the output end of the microcontroller 20 are electrically connected to an A / D converter and a D / A converter, respectively. The temperature sensor 18 and the water level sensor 19 are both electrically connected to the A / D converter. The connection end of the microcontroller 20 is electrically connected to a display 21. The electric heater 4, the first water pump 14 and the second water pump 15 are all electrically connected to the D / A converter.

[0040] Temperature sensor 18 and water level sensor 19 sense the temperature and water level of the water inside the heating tank 2 and display them in real time on display 21. The heating tank 2 is filled with water, and then the water is heated to the set temperature by electric heater 4. The heated water is then discharged into the hot water storage tank. The hot water storage tank is then filled with water and heated continuously. The driver can then open the water valve to use hot water, which is available instantly. In this embodiment, 24V DC power is used, which significantly improves safety.

[0041] Furthermore, in the above technical solution, the control circuit of the electric heater 4 is equipped with a temperature controller 22 electrically connected to the microcontroller 20, which is used to set the heating temperature of the water by the electric heater 4. The chassis 5 is provided with an installation cavity, and the temperature controller 22 and the microcontroller 20 are arranged in the installation cavity. The display 21 is embedded in the chassis 5.

[0042] The required water temperature is set by the thermostat 22, and the electric heater 4 is controlled by the microcontroller 20. The trigger conditions for the operation of the electric heater 4 are set, namely the upper and lower limits of the water temperature, and it works in conjunction with the temperature sensor 18.

[0043] Furthermore, in the above technical solution, a remote control module 23 is also installed inside the chassis 5. The remote control module 23 is electrically connected to the microcontroller 20 and is used for remote collaboration between the microcontroller 20 and the vehicle system. A mobile phone control version can also be used. The remote control module 23 adopts a wireless remote control module, which uses existing technology and will not be described in detail here.

[0044] Furthermore, in the above technical solution, the insulation layer 3 is made of foam or sponge, and the buffer 7 is made of spring or rubber pad. In this embodiment, the insulation layer 3 is a sponge sleeve, and the buffer 7 is a spring.

[0045] The mounting mechanism for the vehicle-mounted electric heater includes a mounting base 24 and an annular sleeve 25. The mounting base 24 is detachably mounted to the vehicle body via bolts. The annular sleeve 25 is slidably fitted onto the outside of the PVC shell 1. A slot is provided on the outer side of the annular sleeve 25, and a tension strap 26 is embedded in the slot. The two ends of the tension strap 26 are respectively fixed to the two ends of the mounting base 24 by bolts. The lower surface of the mounting base 24 has a groove that matches the annular sleeve 25 and the PVC shell 1. The inner wall of the groove fits against the outer wall of the PVC shell 1, thereby improving the stability of the electric heater 4 during installation. In addition, the lower surface of the mounting base 24 also has a groove that matches the annular sleeve 25, thereby preventing the mounting base 24 and the annular sleeve 25 from slipping sideways. After the electric heater 4 is installed, the overall structure will not shake, thus ensuring the safety of the device and extending its service life.

[0046] Furthermore, in the above technical solution, the number of combination seats 24 and annular sleeves 25 corresponds, and at least two sets are set. The number of combination seats 24 and annular sleeves 25 in each set is set to two, and they are symmetrically distributed about the central axis of the PVC shell 1. The two ends of the combination seats 24 are respectively provided with a first bidirectional lead screw 27 and a second bidirectional lead screw 28, and multiple sets of combination seats 24 are symmetrically distributed on the first bidirectional lead screw 27 and the second bidirectional lead screw 28. The threads of the first bidirectional lead screw 27 and the second bidirectional lead screw 28 are opposite. When the first bidirectional lead screw 27 and the second bidirectional lead screw 28 are rotated synchronously in opposite directions, the combination seats 24 on both sides can move synchronously relative to each other, so as to accurately locate the installation position of the combination seats 24, which is convenient for installation and can be applied to various vehicle models with low modification costs.

[0047] Working principle:

[0048] Prefabricated components are produced according to planned dimensions and then assembled into a vehicle-mounted electric heater. Two annular sleeves 25 are fitted onto the outside of the PVC shell 1 of the vehicle-mounted electric heater. The first bidirectional lead screw 27, the second bidirectional lead screw 28, and the assembly seat 24 are combined, and the tightening straps 26 are installed on the assembly seat 24 and the annular sleeves 25 to fix them together. When the vehicle-mounted electric heater is installed on the vehicle body, holes are drilled at the installation location on the vehicle body, and the first bidirectional lead screw 27 and the second bidirectional lead screw 28 are rotated in opposite directions at the same time so that the assembly seats 24 on both sides can move synchronously relative to each other. This allows the mounting holes of the assembly seats 24 to be aligned with the drilling positions, and then bolts are used to install it.

[0049] When maintenance is required, rotate the cover plate 6 to open the end of the PVC shell 1, making it easy to replace the insulation layer 3 and improve the heat preservation effect of the heater. In the power-off state, periodically open the sealing plate 17 to disconnect the circuit terminals of the electric heater 4 and the pipe structure on both sides of the pipe connector 12, making it easy to disassemble the heating inner tank 2 and maintain it. Scrape and clean the scale attached to the inner wall of the heating inner tank 2 and the outer wall of the electric heater 4 to ensure heating efficiency, improve the hygiene of the water, and extend the service life of the vehicle electric heater.

[0050] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A vehicle-mounted electric heater, comprising a PVC outer shell (1) and a heating inner liner (2), wherein the heating inner liner (2) is coaxially distributed inside the PVC outer shell (1), and an annular cavity is provided between the PVC outer shell (1) and the heating inner liner (2), characterized in that: The annular cavity is filled with a heat insulation layer (3), and an electric heater (4) is installed at the inner end of the heating inner tank (2) for heating the water inside the heating inner tank (2). One end of the PVC shell (1) is sealed and fixed to the chassis shell (5), and the other end is detachably installed with a cover plate (6). The PVC shell (1) is provided with a buffer (7), and the buffer (7) is located between the end of the heating inner liner (2) and the chassis shell (5). Multiple sets of positioning blocks (8) are fixedly connected to the outer side of the end of the heating inner liner (2). The number of each set of positioning blocks (8) is set to two, and a positioning slot is formed between the two positioning blocks (8). A positioning plate (9) corresponding to the positioning slot is fixedly connected to one side of the chassis shell (5). The heating inner liner (2) is provided with a water inlet pipe (10) through the bottom and a water outlet pipe (11) through the top. The water outlet pipe (11) is set as an arc-shaped section that fits the outer wall of the heating inner liner (2). The bottom ends of the water inlet pipe (10) and the water outlet pipe (11) are both equipped with pipe connectors (12). The bottom ends of the water inlet pipe (10) and the water outlet pipe (11) are connected to guide water pipes (13) through the pipe connectors (12). The two guide water pipes (13) are respectively connected to a first water pump (14) and a second water pump (15). The first water pump (14) and the second water pump (15) correspond to the water inlet pipe (10) and the water outlet pipe (11) respectively.

2. The vehicle-mounted electric heater according to claim 1, characterized in that: The bottom of the PVC shell (1) has two through holes (16) that correspond to two water guide pipes (13) respectively. The water inlet pipe (10) and the water outlet pipe (11) are both made of rigid pipes, while the water guide pipe (13) is made of flexible pipe.

3. The vehicle-mounted electric heater according to claim 1, characterized in that: The inner end of the PVC shell (1) is provided with an internal thread, and a threaded ring is fixedly connected to one side of the cover plate (6), and the threaded ring is threadedly connected to the PVC shell (1).

4. The vehicle-mounted electric heater according to claim 3, characterized in that: One end of the heating inner liner (2) is set to be open, and a sealing plate (17) is fastened to the open end of the heating inner liner (2) by bolts. Sealing gaskets are provided between the sealing plate (17) and the end of the heating inner liner (2) and between the cover plate (6) and the PVC shell (1).

5. The vehicle-mounted electric heater according to claim 1, characterized in that: The heating inner tank (2) is equipped with a temperature sensor (18) and a water level sensor (19) to sense the temperature and water level information of the water inside the heating inner tank (2), respectively. The connection terminals of the temperature sensor (18) and the water level sensor (19) are equipped with a microcontroller (20). The input and output terminals of the microcontroller (20) are electrically connected to an A / D converter and a D / A converter, respectively. The temperature sensor (18) and the water level sensor (19) are both electrically connected to the A / D converter. The connection terminal of the microcontroller (20) is electrically connected to a display (21). The electric heater (4), the first water pump (14) and the second water pump (15) are all electrically connected to the D / A converter.

6. The vehicle-mounted electric heater according to claim 5, characterized in that: The electric heater (4) is equipped with a temperature controller (22) electrically connected to the microcontroller (20) on its control circuit. The temperature controller (22) is used to set the heating temperature of the electric heater (4) on the water. The chassis (5) has an installation cavity inside, and the temperature controller (22) and the microcontroller (20) are arranged in the installation cavity. The display (21) is embedded in the chassis (5).

7. The vehicle-mounted electric heater according to claim 6, characterized in that: The chassis (5) is also equipped with a remote control module (23), which is electrically connected to the microcontroller (20) for remote collaboration between the microcontroller (20) and the vehicle system.

8. The vehicle-mounted electric heater according to claim 1, characterized in that: The insulation layer (3) is made of foam or sponge, and the buffer (7) is made of spring or rubber pad.

9. The mounting mechanism for the vehicle-mounted electric heater as described in any one of claims 1-8, characterized in that: It includes a combination seat (24) and an annular sleeve (25), wherein the combination seat (24) is detachably installed to the vehicle body by bolts, and the annular sleeve (25) is slidably sleeved on the outside of the PVC shell (1). The outer side of the annular sleeve (25) is provided with a slot, and a tightening band (26) is embedded in the slot. The two ends of the tightening band (26) are respectively fixed to the two ends of the combination seat (24) by bolts. The lower surface of the combination seat (24) is provided with a groove that matches the annular sleeve (25) and the PVC shell (1).

10. The mounting mechanism for the vehicle-mounted electric heater according to claim 9, characterized in that: The number of the combination seat (24) and the annular sleeve (25) are corresponding and at least two sets are set. The number of combination seats (24) and annular sleeves (25) in each set is set to two and they are symmetrically distributed about the central axis of the PVC shell (1). The two ends of the combination seat (24) are respectively provided with a first bidirectional screw (27) and a second bidirectional screw (28), and multiple sets of combination seats (24) are symmetrically distributed on the first bidirectional screw (27) and the second bidirectional screw (28).

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