Water tank device of vehicle-mounted water heater

Abstract

The utility model discloses a water tank device of a vehicle-mounted water heater, which comprises a barrel-shaped main body, a front end cover and a rear end cover are respectively arranged at two ends of the barrel-shaped main body, and a water storage chamber is arranged in the barrel-shaped main body; the water inlet pipe and the water outlet pipe are arranged on the rear end cover and are communicated with the water storage chamber; the conductive end of the electric heating element is arranged on the outer surface of the front end cover, and the heating end of the electric heating element extends into the water storage chamber; and the combustion pipeline is located in the water storage cavity, the input pipe end and the output pipe end of the combustion pipeline are both arranged on the front end cover, and the input pipe end is connected with a gas combustion assembly. According to the water tank device of the structure, the combustion pipeline and the electric heating element are arranged in the barrel-shaped body so that the functions of gas heating and electric heating can be integrated, and the input pipe end and the output pipe end of the combustion pipeline and the conductive end of the electric heating element are all arranged on the outer surface of the front end cover so that a user can conveniently maintain or replace the water tank device; the water inlet pipe and the water outlet pipe are arranged on the rear end cover so as to be conveniently connected into a vehicle-mounted water supply system, and user operation is prevented from being affected by disordered layout.

Description

Technical Field

[0001] The utility model relates to a water tank device of a vehicle-mounted water heater. Background Art

[0002] Water heaters are a common device for vehicle-mounted equipment. General vehicle-mounted water heaters can only achieve one of the heating modes: electric heating or gas heating. In camping and vehicle-mounted use, gas and electricity are in short supply. Water heaters with a single heating mode cannot flexibly meet the use needs. In addition, due to the limited installation space provided for vehicle-mounted use, it is impossible to accommodate two water heaters at the same time. In addition, the layout of the water pipes, gas modules, electric heating modules and electrical components on the water tank of ordinary water heaters is relatively chaotic, which is not conducive to repair and maintenance. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a water tank device for a vehicle-mounted water heater, which integrates the functions of gas heating and electric heating in a very compact structural layout and is easy to install and maintain.

[0004] According to an embodiment of the utility model, a water tank device of a vehicle-mounted water heater comprises: a cylindrical main body, a front end cover and a rear end cover are respectively provided at both ends of the cylindrical main body, and a water storage chamber is provided inside the cylindrical main body; a water inlet pipe and a water outlet pipe, both of which are provided at the rear end cover and are connected to the water storage chamber, and the water inlet pipe and the water outlet pipe are used to respectively connect to the vehicle-mounted water supply system; an electric heating element, the conductive end of the electric heating element is provided on the outer surface of the front end cover, and the heating end of the electric heating element is extended into the water storage chamber; a combustion pipe, the combustion pipe is located inside the water storage chamber, the input pipe end and the output pipe end of the combustion pipe are both provided on the front end cover, and the input pipe end of the combustion pipe is connected to a gas combustion component.

[0005] The water tank device of the vehicle-mounted water heater according to the embodiment of the utility model has at least the following beneficial effects:

[0006] The water tank device of the vehicle-mounted water heater of the above structure utilizes a cylindrical main body with a built-in combustion pipe and an electric heating element to integrate the functions of gas heating and electric heating. The input pipe end and the output pipe end of the combustion pipe, as well as the conductive end of the electric heating element are all arranged on the outer surface of the front cover for the convenience of user maintenance or replacement. The water inlet pipe and the water outlet pipe are arranged on the rear end cover for easy connection to the vehicle-mounted water supply system, avoiding a cluttered layout that affects user operation.

[0007] In some embodiments of the present invention, the cylindrical body and the water storage chamber are both cylindrical, the combustion pipe is a first U-shaped tube, the first U-shaped tube is extended along the length direction of the cylindrical body, the width of the first U-shaped tube is slightly smaller than the inner diameter of the water storage chamber, and the symmetry center line of the first U-shaped tube is located on the axis of the cylindrical body.

[0008] In some embodiments of the present invention, the two end openings of the first U-shaped tube are respectively penetrated through the front end cover to form the input tube end and the output tube end, the output tube end is located above the input tube end, and the first U-shaped tube is inclined relative to the vertical direction.

[0009] In some embodiments of the present invention, a magnesium rod inserted into the water storage chamber is detachably mounted on the lower end of the front end cover.

[0010] In some embodiments of the utility model, a first mounting pipe opening connected to the water storage chamber is opened at the lower end of the front end cover, a first threaded pipe sleeve is fixedly provided on the inner peripheral wall of the first mounting pipe opening, one end of the magnesium rod is provided with a threaded column portion connected to the first threaded pipe sleeve, and the other end of the magnesium rod is extended in a direction parallel to the cylindrical body and is arranged above the lower end of the water storage chamber.

[0011] In some embodiments of the utility model, the upper portion of the front end cover is further provided with a pressure relief valve connected to the water storage chamber and a drainage pipe connected to the pressure relief valve.

[0012] In some embodiments of the utility model, the electric heating element includes a U-shaped heating tube and a mounting head fixed on both ends of the U-shaped heating tube, the two ends of the U-shaped heating tube are respectively connected to power terminals protruding from the mounting head, the front end cover is provided with a second mounting pipe opening connected to the water storage chamber, the inner peripheral wall of the second mounting pipe opening is fixed with a second threaded pipe sleeve, and the mounting head is detachably threadedly connected to the second threaded pipe sleeve.

[0013] In some embodiments of the utility model, the cylindrical body or the front end cover is provided with a first thermostat and a second thermostat, the first thermostat is electrically connected to the electric heating element, the gas combustion assembly includes a burner, an igniter and a mixed gas supply pipe arranged at the input pipe end of the combustion pipeline, and the mixed gas supply pipe is connected to a solenoid valve electrically connected to the second thermostat.

[0014] In some embodiments of the utility model, a mounting area for positioning and mounting the first thermostat and the second thermostat is provided in the middle of the outer surface of the front end cover, and the input pipe end, the conductive end of the electric heating element and the output pipe end are arranged around the mounting area.

[0015] In some embodiments of the utility model, the wall panels of the front end cover and the rear end cover are both arched in the direction away from the water storage chamber, and a plurality of installation openings connected to the water storage chamber are provided on the wall panels of the front end cover and the rear end cover, and the front end cover or the rear end cover is provided with a circle of annular flange protruding in the direction away from the water storage chamber on the outer peripheral edge of the installation opening.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a water tank device of a vehicle-mounted water heater of the utility model;

[0019] Figure 2 for Figure 1 A structural schematic diagram of another perspective of the embodiment;

[0020] Figure 3 for Figure 1 A schematic cross-sectional view of an embodiment.

[0021] Reference numerals:

[0022] Cylindrical body 100; front end cover 200; first threaded sleeve 220; second threaded sleeve 240; installation area 250; rear end cover 300; water inlet pipe 310; water outlet pipe 320; electric heating element 400; U-shaped heating pipe 410; installation head 420; combustion pipe 500; magnesium rod 600; threaded column 610; pressure relief valve 710; drainage pipe 720; first thermostat 810; second thermostat 820; annular flange 900. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", etc., are 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 device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] See also Figures 1 to 3 The utility model discloses a water tank device of a vehicle-mounted water heater, comprising: a cylindrical body 100, wherein the two ends of the cylindrical body 100 are respectively provided with a front cover 200 and a rear cover 300, wherein a water storage chamber 110 is provided inside the cylindrical body 100; a water inlet pipe 310 and a water outlet pipe 320, both of which are provided at the rear cover 300 and communicated with the water storage chamber 110, wherein the water inlet pipe 310 and the water outlet pipe 320 are used to be respectively connected to a vehicle-mounted water supply system; an electric heating element 400, wherein the conductive end of the electric heating element 400 is provided at the outer surface of the front cover 200, and the heating end of the electric heating element 400 is extended into the water storage chamber 110; and a combustion pipe 500, wherein the combustion pipe 500 is located inside the water storage chamber 110, wherein the input pipe end and the output pipe end of the combustion pipe 500 are both provided at the front cover 200, and the input pipe end of the combustion pipe 500 is connected with a gas combustion assembly.

[0028] The water tank device of the vehicle water heater of the above structure utilizes the cylindrical body 100 to have a built-in combustion pipe 500 and an electric heating element 400 to integrate the functions of gas heating and electric heating. The input pipe end and the output pipe end of the combustion pipe 500, as well as the conductive end of the electric heating element 400 are all arranged on the outer surface of the front cover 200 for the convenience of user maintenance or replacement. The water inlet pipe 310 and the water outlet pipe 320 are arranged on the rear cover 300 for the convenience of access to the vehicle-mounted water supply system to avoid a messy layout that affects user operation. Generally speaking, the outer surface of the RV is concavely provided with an installation channel for installing the cylindrical body 100, the water supply system is arranged on the inner side of the compartment of the RV, and a door panel that can open or close the installation channel is arranged on the outer side of the RV. The user can open the door panel to maintain or replace the parts of the front cover 200.

[0029] See also Figure 1 and Figure 3 In some embodiments of the utility model, the cylindrical body 100 and the water storage chamber 110 are both cylindrical, and the combustion pipe 500 is a first U-shaped pipe, which is extended along the length direction of the cylindrical body 100, the width of the first U-shaped pipe is slightly smaller than the inner diameter of the water storage chamber 110, and the symmetry center line of the first U-shaped pipe is located on the axis of the cylindrical body 100. The first U-shaped pipe is formed into a U shape by bending a circular straight pipe, the overall length of the first U-shaped pipe is close to the length of the water storage chamber 110, the width of the first U-shaped pipe is slightly smaller than the inner diameter of the water storage chamber 110, and the symmetry center line of the first U-shaped pipe is located on the axis of the cylindrical body 100, which ensures that there is sufficient surface area for heat exchange between the combustion pipe 500 and the water in the water storage chamber 110, and ensures that the first U-shaped pipe will not directly contact the inner peripheral wall of the water storage chamber 110 and cause dry burning.

[0030] See also Figure 1 and Figure 3 In some embodiments of the utility model, the two end openings of the first U-shaped tube are respectively penetrated through the front end cover 200 to form the input tube end and the output tube end, the output tube end is located above the input tube end, and the first U-shaped tube is tilted relative to the vertical direction. It should be noted that in order to limit the excessive expansion of the water tank device, under normal circumstances, a certain space is reserved in the water storage chamber 110. If the first U-shaped tube is arranged in the vertical direction, that is, the output tube end is close to the upper end of the inner wall of the water storage chamber 110, the output tube end at least partially extends above the water surface and causes heat loss. Therefore, the first U-shaped tube arranged in the above position can make full use of the heat of the flue gas from the combustion of gas.

[0031] See also Figure 1 and Figure 3In some embodiments of the present invention, a magnesium rod 600 inserted into the water storage chamber 110 is detachably mounted at the lower end of the front cover 200. The magnesium rod 600 releases magnesium ions, which slows down the formation of water alkali and scale in the water storage chamber 110, effectively preventing a large amount of scale from attaching to the inner wall of the water storage chamber 110 to corrode the cylindrical body 100, and also preventing scale from attaching to the combustion pipe 500 and the electric heating element 400 to reduce the heat exchange efficiency. Since the magnesium rod 600 has a certain service life, the detachable replacement ensures that the water tank device can permanently slow down the formation of water alkali and scale.

[0032] In some embodiments of the utility model, the lower end of the front end cover 200 is provided with a first installation nozzle connected to the water storage chamber 110, the inner peripheral wall of the first installation nozzle is fixed with a first threaded sleeve 220, one end of the magnesium rod 600 is provided with a threaded column 610 connected to the first threaded sleeve 220, and the other end of the magnesium rod 600 is extended and arranged above the lower end of the water storage chamber 110 in a direction parallel to the cylindrical body 100. The disassembly and installation of the magnesium rod 600 are very convenient through the cooperation of the first threaded sleeve 220 and the threaded column 610, and the magnesium rod 600 is extended and arranged above the lower end of the water storage chamber 110 in a direction parallel to the cylindrical body 100, which can increase the contact area between the magnesium rod 600 and the water. Moreover, when the magnesium rod 600 is removed, the water in the water storage chamber 110 can be directly discharged from the first installation nozzle, so as to facilitate the discharge of sediment.

[0033] See also Figure 1 and Figure 3 In some embodiments of the utility model, in order to prevent the cylindrical body 100 from expanding and exploding due to excessive water pressure or excessive gas pressure, the upper part of the front end cover 200 is also provided with a pressure relief valve 710 connected to the water storage chamber 110 and a drainage pipe 720 connected to the pressure relief valve 710. When the pressure in the cylindrical body 100 is higher than a preset value, the pressure relief valve 710 opens to discharge the fluid from the drainage pipe 720.

[0034] See also Figure 1 and Figure 3In some embodiments of the utility model, the electric heating element 400 includes a U-shaped heating tube 410 and mounting heads 420 fixed on both ends of the U-shaped heating tube 410, and both ends of the U-shaped heating tube 410 are respectively connected with power terminals 421 protruding from the mounting heads 420, and the front end cover 200 is provided with a second mounting pipe opening connected to the water storage chamber 110, and the inner peripheral wall of the second mounting pipe opening is fixed with a second threaded sleeve 240, and the mounting head 420 is detachably threadedly connected to the second threaded sleeve 240. The user can remove the mounting head 420 on the U-shaped heating tube 410 from the front end cover 200 by screwing, which is convenient for assembly and replacement.

[0035] See also Figure 1 In some embodiments of the utility model, the cylindrical body 100 or the front end cover 200 is provided with a first thermostat 810 and a second thermostat 820, the first thermostat 810 is electrically connected to the electric heating element 400, the gas combustion assembly includes a burner, an igniter and a mixed gas supply pipe provided at the input pipe end of the combustion pipeline 500, and the mixed gas supply pipe is connected to a solenoid valve electrically connected to the second thermostat 820. It should be noted that the gas and oxygen are discharged from the mixed gas supply pipe to the burner in the form of a mixed gas, the mixed gas is ignited by the igniter, and the generated smoke passes through the interior of the combustion pipeline 500 and is discharged from the output pipe end. When the first thermostat 810 detects that the water temperature is higher than the preset maximum value, the first thermostat 810 controls the electric heating element 400 to cut off the power, and when the water temperature is lower than the preset minimum value, the electric heating element 400 is powered on again; when the second thermostat 820 detects that the water temperature is higher than the preset maximum value, the second thermostat 820 controls the solenoid valve to close, and when the water temperature is lower than the preset minimum value, the solenoid valve is controlled to open.

[0036] See also Figure 1 In some embodiments of the utility model, the middle of the outer surface of the front cover 200 is provided with an installation area 250 for positioning and installing the first thermostat 810 and the second thermostat 820, and the input pipe end, the conductive end of the electric heating element 400 and the output pipe end are arranged around the installation area 250. It should be noted that, since the first thermostat 810 and the second thermostat 820 are located in the middle of the outer surface of the front cover 200, when no water is injected into the cylindrical body 100 but the electric heating element 400 and the gas combustion assembly are accidentally turned on, the first thermostat 810 or the second thermostat 820 can be quickly heated to disconnect the power supply or the gas supply.

[0037] See also Figure 1 and Figure 2In some embodiments of the utility model, the wall panels of the front cover 200 and the rear cover 300 are both arched in the direction away from the water storage chamber 110, and the wall panels of the front cover 200 and the rear cover 300 are both provided with a plurality of installation openings connected to the water storage chamber 110, and the front cover 200 or the rear cover 300 is provided with a circle of annular flanges 900 protruding in the direction away from the water storage chamber 110 at the outer peripheral edge of the installation opening. The wall panels of the front cover 200 and the rear cover 300 arch outward, which is beneficial to increase the volume of the water tank device, and is also beneficial to enhance the structural strength of the front cover 200 and the rear cover 300. The provision of the annular flange 900 is also beneficial to enhance the structural strength of the front cover 200 and the rear cover 300, and improve the pressure-proof explosion-proof capability. Among them, the above-mentioned first installation pipe opening and the second installation pipe opening both belong to the above-mentioned installation opening.

[0038] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the 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 this specification.

[0039] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A water tank device for a vehicle-mounted water heater, characterized in that: include: A cylindrical body (100), wherein a front end cover (200) and a rear end cover (300) are respectively provided at two ends of the cylindrical body (100), and a water storage chamber (110) is provided inside the cylindrical body (100); A water inlet pipe (310) and a water outlet pipe (320) are both arranged on the rear end cover (300) and are connected to the water storage chamber (110); the water inlet pipe (310) and the water outlet pipe (320) are used to be connected to a vehicle-mounted water supply system respectively; An electric heating element (400), wherein the conductive end of the electric heating element (400) is arranged on the outer surface of the front end cover (200), and the heating end of the electric heating element (400) is extended into the water storage chamber (110); A combustion pipe (500), the combustion pipe (500) is located inside the water storage chamber (110), the input pipe end and the output pipe end of the combustion pipe (500) are both arranged on the front end cover (200), and the input pipe end of the combustion pipe (500) is connected to a gas combustion component.

2. The water tank device of a vehicle-mounted water heater according to claim 1, characterized in that: The cylindrical body (100) and the water storage chamber (110) are both cylindrical, and the combustion pipe (500) is a first U-shaped tube, which is extended along the length direction of the cylindrical body (100), the width of the first U-shaped tube is slightly smaller than the inner diameter of the water storage chamber (110), and the symmetry center line of the first U-shaped tube is located on the axis of the cylindrical body (100).

3. The water tank device of a vehicle-mounted water heater according to claim 2, characterized in that: The two end openings of the first U-shaped tube are respectively arranged through the front end cover (200) to form the input tube end and the output tube end. The output tube end is located above the input tube end. The first U-shaped tube is arranged obliquely relative to the vertical direction.

4. The water tank device of a vehicle-mounted water heater according to claim 3, characterized in that: A magnesium rod (600) inserted into the water storage chamber (110) is detachably mounted on the lower end of the front end cover (200).

5. The water tank device of the vehicle-mounted water heater according to claim 4, characterized in that: The lower end of the front end cover (200) is provided with a first installation pipe opening connected to the water storage chamber (110), and the inner peripheral wall of the first installation pipe opening is fixedly provided with a first threaded pipe sleeve (220), one end of the magnesium rod (600) is provided with a threaded column portion (610) connected to the first threaded pipe sleeve (220), and the other end of the magnesium rod (600) is extended in a direction parallel to the cylindrical body (100) and is arranged above the lower end of the water storage chamber (110).

6. The water tank device of a vehicle-mounted water heater according to claim 1, characterized in that: The upper portion of the front end cover (200) is also provided with a pressure relief valve (710) connected to the water storage chamber (110) and a drainage pipe (720) connected to the pressure relief valve (710).

7. The water tank device of a vehicle-mounted water heater according to claim 1, characterized in that: The electric heating element (400) comprises a U-shaped heating tube (410) and mounting heads (420) fixedly mounted on both ends of the U-shaped heating tube (410); both ends of the U-shaped heating tube (410) are respectively connected to power terminals (421) protruding from the mounting heads (420); the front end cover (200) is provided with a second mounting pipe opening connected to the water storage chamber (110); a second threaded pipe sleeve (240) is fixedly mounted on the inner peripheral wall of the second mounting pipe opening; and the mounting head (420) is detachably threadedly connected to the second threaded pipe sleeve (240).

8. The water tank device of a vehicle-mounted water heater according to claim 1, characterized in that: The cylindrical body (100) or the front end cover (200) is provided with a first thermostat (810) and a second thermostat (820), wherein the first thermostat (810) is electrically connected to the electric heating element (400), and the gas combustion assembly comprises a burner, an igniter and a mixed gas supply pipe arranged at the input pipe end of the combustion pipeline (500), and the mixed gas supply pipe is connected to a solenoid valve electrically connected to the second thermostat (820).

9. The water tank device of a vehicle-mounted water heater according to claim 8, characterized in that: A mounting area (250) for positioning and mounting the first thermostat (810) and the second thermostat (820) is provided in the middle of the outer surface of the front end cover (200), and the input pipe end, the conductive end of the electric heating element (400) and the output pipe end are arranged around the mounting area (250).

10. The water tank device of a vehicle-mounted water heater according to claim 1, characterized in that: The wall panels of the front end cover (200) and the rear end cover (300) are both arched in a direction away from the water storage chamber (110), and a plurality of installation openings in communication with the water storage chamber (110) are provided on the wall panels of the front end cover (200) and the rear end cover (300), and the front end cover (200) or the rear end cover (300) is provided with a circle of annular flanges (900) protruding in a direction away from the water storage chamber (110) at the outer peripheral edge of the installation opening.

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