Outdoor vehicle-mounted gas water heater

Abstract

The utility model relates to an outdoor vehicle-mounted gas water heater which comprises a main body, a gas nozzle is arranged in the main body, an ignition structure is arranged on the outer side of the gas nozzle, a combustion chamber is arranged at the end of the main body and located on the outer side of an igniter, a cold and hot water exchanger is arranged on the outer side of the main body, and a heating pipeline is arranged on the cold and hot water exchanger. The two ends of the heating pipeline are connected with the cold water inlet pipe and the hot water outlet pipe respectively, after ignition, fuel sprayed out of the fuel gas nozzle burns to form flame sprayed to the cold and hot water exchanger, and therefore the purpose of rapidly heating cold water is achieved, at the moment, the cold water is directly heated to form hot water and flows out, and it can be guaranteed that the water outlet flow is large; the water heater is simple in overall structure and can be directly fixed outside the vehicle, so that the space in the vehicle is saved, the whole water heater does not need to be disassembled and assembled in the using process, the water heater can be directly used after being connected with a corresponding pipeline, and then a user can use the water heater conveniently.

Description

Technical Field

[0001] This utility model relates to the field of water heaters, and in particular to an outdoor vehicle-mounted gas water heater. Background Technology

[0002] With the rise of outdoor living, more and more people enjoy weekends or long-distance road trips. As people's living standards improve, they have higher and higher requirements for outdoor bathing. Traditional outdoor gas water heaters are too large, have too small a flow rate, cannot be fixed in place, need to be placed in parking spaces, occupy valuable car interior space, require frequent moving, and are very troublesome to install every time they are used, thus creating safety hazards. Utility Model Content

[0003] Therefore, it is necessary to provide an outdoor vehicle-mounted gas water heater to address the problems in the existing technology.

[0004] An outdoor vehicle-mounted gas water heater is characterized by comprising a main body, a gas nozzle inside the main body, an ignition structure outside the gas nozzle, a combustion chamber at the end of the main body located outside the igniter, a hot and cold water exchanger outside the main body, and a heating pipe in the hot and cold water exchanger, with a cold water inlet pipe and a hot water outlet pipe respectively connected to the two ends of the heating pipe.

[0005] In one embodiment, the hot and cold water exchanger has a cylindrical structure, and / or the hot and cold water exchanger and the main body are integrally cylindrical.

[0006] In one embodiment, a power source is provided on the outside of the main body. The power source is fixedly connected to the main body via a buckle, or is detachably connected or separately connected. The power source is electrically connected to the circuit board inside the main body via a wire.

[0007] In one embodiment, a fixed base is provided on the outer side of the main body, and the fixed base is provided with a first contact terminal. The first contact terminal is electrically connected to the circuit board inside the main body through a wire. The bottom of the power supply is provided with a second contact terminal. The bottom of the power supply is inserted into the fixed base and fixedly connected to the fixed base. The first contact terminal and the second contact terminal abut against each other for electrically connecting the power supply to the circuit board.

[0008] In one embodiment, the power supply is cylindrical in shape, and a light source is provided at one end of the power supply, which is electrically connected to the power supply.

[0009] In one embodiment, the main body is further provided with a protruding first housing on the other side corresponding to the power source. A gas solenoid valve is provided inside the first housing. The gas solenoid valve is connected to a gas nozzle through a pipe and is connected to a gas source.

[0010] Or the main body is provided with a protruding second housing on the other side corresponding to the power supply, and the pulse igniter main body is provided in the second housing. The ignition structure is an ignition needle connected to the pulse igniter main body.

[0011] In one embodiment, the hot and cold water exchanger includes an annular body, one end of which is fixed to the end of the main body, and a sealing cap is fixed to the other end of the annular body. The inner wall of the annular body is provided with a plurality of axially distributed connecting holes, and the two ends of the connecting holes are connected by U-shaped connectors. The connecting holes and the U-shaped connectors form a heating pipe.

[0012] In one embodiment, an air inlet connecting pipe is provided between the annular body and the main body. The air inlet connecting pipe has an air inlet. An air inlet sleeve is provided on the outside of the air inlet connecting pipe. The air inlet sleeve includes a fixing part fixed to the annular body or the outside of the main body. The end of the fixing part is also provided with an annular part spaced apart from the air inlet connecting pipe. The outer end of the annular part has an opening communicating with the outside. The opening at the outer end of the annular part faces one side of the main body. The outside of the air inlet connecting pipe is also provided with a protruding limiting part. The limiting part abuts against or is spaced apart from the inner side of the annular part.

[0013] In one embodiment, the gas chamber is generally annular, and a fixing groove is provided on the outside of the gas chamber. The end of the main body away from the hot and cold water exchanger is provided with a water inlet and a water outlet. The water inlet and the water outlet are respectively connected to the two ends of the heating pipe through the cold water inlet pipe and the hot water outlet pipe. The cold water inlet pipe and the hot water outlet pipe are respectively clamped in the fixing groove.

[0014] In one embodiment, the main body and / or hot / cold water exchanger is provided with a fixing buckle on the outside, which is fixed to the outside of the vehicle by fasteners.

[0015] The aforementioned outdoor vehicle-mounted gas water heater, after ignition, burns the fuel sprayed from the gas nozzle, forming a flame that is directed towards the hot and cold water exchanger, thereby achieving the purpose of rapidly heating cold water. At this time, the cold water is directly heated to form hot water and flows out, ensuring a large water flow rate. The overall structure of the water heater is simple and can be directly fixed to the outside of the vehicle, thus saving interior space. During use, there is no need to disassemble and install the entire unit; it can be used directly after connecting the corresponding pipes, making it convenient for users. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a utility model outdoor vehicle-mounted gas water heater;

[0017] Figure 2 A schematic diagram of the water flow direction for a utility model outdoor vehicle-mounted gas water heater;

[0018] Figure 3This is a structural schematic diagram showing a partial sectional view of the main body of a utility model outdoor vehicle-mounted gas water heater.

[0019] Figure 4 An exploded view of the structure of the gas nozzle portion of an outdoor vehicle-mounted gas water heater, a utility model.

[0020] Figure 5 Exploded view and structural schematic diagram of a portion of the structure of a utility model outdoor vehicle-mounted gas water heater;

[0021] Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle;

[0022] The components are: 1. Main body; 2. Gas nozzle; 3. Ignition structure; 31. Pulse igniter main body; 32. Ignition needle; 33. Second housing;

[0023] 4. Combustion chamber; 41. Fixing groove;

[0024] 5. Hot and cold water exchanger; 51. Heating pipe; 52. Cold water inlet pipe; 53. Hot water outlet pipe; 55. Annular body; 56. Sealing cover; 57. Connecting hole; 58. U-shaped connector;

[0025] 6. Power supply; 61. Mounting base;

[0026] 7. First housing; 71. Gas solenoid valve;

[0027] 8. Fixing buckle;

[0028] 9. Air inlet connecting pipe; 91. Air inlet; 92. Air inlet sleeve; 921. Fixing part; 922. Annular part; 93. Limiting part. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0030] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] like Figures 1 to 6 As shown, an outdoor vehicle-mounted gas water heater is characterized by comprising a main body 1, a gas nozzle 2 inside the main body 1, an ignition structure 3 outside the gas nozzle 2, a combustion chamber 4 at the end of the main body 1 located outside the igniter, a hot and cold water exchanger 5 outside the main body 1, and a heating pipe 51 at the two ends of the heating pipe 51, which is connected to a cold water inlet pipe 52 and a hot water outlet pipe 53 respectively.

[0033] After ignition, the fuel sprayed from the gas nozzle 2 burns, forming a flame that is sprayed toward the hot and cold water exchanger 5, thereby achieving the purpose of rapidly heating the cold water. At this time, the cold water is directly heated to form hot water and flows out, which can ensure a large water flow. The overall structure of the water heater is simple and can be directly fixed outside the vehicle, thereby saving interior space. During use, there is no need to disassemble and install the whole unit. After connecting the corresponding pipes, it can be used directly, which is convenient for users.

[0034] In order to better fix the water heater outside the vehicle, in this embodiment, the hot and cold water exchanger 5 is cylindrical, and / or the hot and cold water exchanger 5 and the main body 1 are cylindrical. In order to improve heating efficiency, the length of the hot and cold water exchanger 5 is set to be relatively long. Therefore, in this embodiment, the hot and cold water exchanger 5 and the main body 1 are both set as cylindrical structures. In this way, the entire main body 1 of the water heater is a long cylindrical structure. This way, when fixed outside the vehicle, the whole structure can be better fixed. Moreover, when fixed outside the vehicle, it can be suspended and fixed on the left and right sides, top, or rear of the vehicle. This reduces wind resistance during vehicle operation, thus not affecting vehicle driving safety. At the same time, fixing the water heater outside the vehicle also has a certain decorative effect.

[0035] At this point, a power supply 6 is also required to ensure the normal operation of all components. In this embodiment, a power supply 6 is provided on the outside of the main body 1. The power supply 6 is fixedly connected to the main body 1 via a snap fastener, or is detachably connected or separately connected. The power supply 6 is electrically connected to the circuit board inside the main body 1 via a wire. The power supply 6 can be located inside or outside the main body 1. When located inside or outside the main body 1, it can be directly fixed or connected via a detachable structure. For example, a slot can be provided on the main body 1 to directly fix the battery in the slot, or it can be detachably fixed in the slot via a snap fastener. Alternatively, a corresponding fixing structure can be provided on the outside of the main body 1 to fix or detachably connect the battery to the fixing structure position. Of course, in this case, the power supply 6 needs to be electrically connected to the circuit board inside the main body 1 via a wire to ensure the normal operation of all components.

[0036] Of course, the power supply 6 can also be set to be connected separately from the main body 1. That is, the power supply 6 connection terminal is set on the outside of the main body 1 and connected to the circuit board. The external power supply 6 is connected to the power supply 6 connection terminal through wires to realize the power supply of the external power supply 6.

[0037] In order for the power supply 6 to have multiple different functions, in this embodiment, a fixed base 61 is provided on the outside of the main body 1. The fixed base 61 is provided with a first contact terminal. The first contact terminal is electrically connected to the circuit board inside the main body 1 through a wire. The bottom of the power supply 6 is provided with a second contact terminal. The bottom of the power supply 6 is inserted into the fixed base 61 and fixedly connected to the fixed base 61. The first contact terminal and the second contact terminal abut against each other to electrically connect the power supply 6 to the circuit board. At this time, a fixed base 61 is set on the outside of the main body 1. The fixed base 61 is a recessed design, that is, a recessed part is provided on the side of the fixed base 61, which corresponds to the bottom of the power supply 6. A first contact terminal is provided at the bottom of the recessed part. When the bottom of the power supply 6 is snapped into the recessed part, the second contact terminal at the bottom of the power supply 6 contacts the first contact terminal, thereby connecting the power supply 6 with the circuit board inside the main body 1, so as to realize the power supply of the circuit board. At this time, in order to ensure the firmness of the power supply 6 and the fixed base 61 after fixation, a slot is provided at the recessed position of the fixed base 61, and a corresponding snap-fit ​​protrusion is provided at the bottom of the power supply 6. When the power supply 6 is inserted into the recessed position, the power supply 6 and the fixed base 61 are fixed together by snapping the snap-fit ​​protrusion with the slot.

[0038] Meanwhile, in order to fix the power supply 6 more stably, a fixing ring is also provided on the side of the fixing base 61. The fixing ring and the fixing base 61 are spaced apart. In this way, the fixing ring can fix the front end of the power supply 6. Thus, the bottom and front end of the power supply 6 are both fixed, which can better fix the power supply 6 to the outside of the main body 1. After fixing, the power supply 6 is more secure to the main body 1. In this way, the power supply 6 is not easy to fall off during use, thereby ensuring the normal use and safety of the power supply 6.

[0039] Of course, since the fixed base 61 has a recessed part, after the power supply 6 is removed, a corresponding sealing plug can be set to prevent water from entering the recessed part. The sealing ring is similar to the sealing sleeve of a telescope lens. It is suspended on the outside of the fixed base 61 by a rope. When the power supply 6 is fixed, it can be fitted onto the head of the power supply 6. After the power supply 6 is removed, it can be fitted onto the outside of the fixed base 61 to prevent water from entering, thereby improving the overall convenience of using the water heater.

[0040] At this time, when the power supply 6 is fixed to the outside of the main body 1 and is detachably connected, in order to improve the usage scenarios of the power supply 6, in this embodiment, the power supply 6 is cylindrical in shape, and a light source is provided at the end of the power supply 6, which is electrically connected to the power supply 6. In this way, after the battery is removed, it can be used as a flashlight, which can be used directly outdoors or in other environments, thus making it convenient for users. At the same time, since the power supply 6 is fixed to the outside of the main body 1 and the power supply 6 is cylindrical in shape, when the power supply 6 is placed together with the main body 1 and the hot and cold water exchanger 5, the power supply 6 can form a shape similar to a telescope, thus giving the overall visual characteristics a certain characteristic and achieving a certain decorative effect.

[0041] Water heaters require gas during use, so in this embodiment, a corresponding gas connection structure is also provided. Specifically, the other side of the main body 1 corresponding to the power supply 6 is provided with a protruding first housing 7. The first housing 7 is provided with a gas solenoid valve 71. The gas solenoid valve 71 is connected to the gas nozzle 2 through a pipe and is connected to the gas source.

[0042] Or the other side of the main body 1 corresponding to the power supply 6 is also provided with a protruding second housing 33, the second housing 33 is provided with a pulse igniter main body 131, and the ignition structure 3 is an ignition needle 32 connected to the pulse igniter main body 131.

[0043] At this time, a first shell 7 and a second shell 33 are set on the lower side of the main body 1, and corresponding structures are placed there respectively. In order for the first shell 7 and the second shell 33 to protrude from the main body 1, and to be set on the upper and lower sides of the main body 1 respectively with the power supply 6, the overall shape has a certain aesthetic appeal. At the same time, it is separated from the combustion chamber 4, which ensures a certain level of safety during use.

[0044] To improve the heating efficiency during gas combustion, in this embodiment, the hot and cold water exchanger 5 includes an annular body 55. One end of the annular body 55 is fixed to the end of the main body 1, and the other end of the annular body 55 is fixed with a sealing cap 56. The inner wall of the annular body 55 has several axially distributed connecting holes 57. The two ends of the connecting holes 57 are connected by U-shaped connectors 58, forming a heating pipe 51. Since the gas is in a "flame-spraying" state during combustion, the flame has a certain length. To improve the heating efficiency of the flame, the hot and cold water exchanger 5 is configured as an annular structure, i.e., an annular body 55. The gas nozzle 2 and the axis of the annular body 55 are aligned. Thus, when the gas ejected from the combustion nozzle is burned, the flame is entirely within the annular body 55, thereby improving heating efficiency.

[0045] At this time, in order to improve the heating efficiency, the annular body 55 is provided with several axially distributed connecting holes 57. The connecting holes 57 are connected at the end of the annular body 55 through U-shaped pipes, so that all the connecting holes 57 are heating pipes 51 with two connection ports. At this time, since the flame is located in the middle of the annular body 55, a central pipe is also provided in the middle of the annular body 55. The central pipe is connected to the heating pipe 51, thus forming a complete heating pipe 51.

[0046] At this point, the connecting hole 57 and the annular body 55 are integrally formed using an extrusion process. The U-shaped pipe is welded to the connecting hole 57, ensuring a good overall sealing effect for the heating pipe 51. This prevents breakage during heating, extending its service life. Additionally, multiple protruding heating fins are provided on the outer side of the connecting hole 57 to increase heating efficiency. Several grooves, either linear or circular, are provided on the outer side of the annular body 55, increasing the contact area between the annular body 55 and the outside environment. This improves heat dissipation, allowing for rapid heat dissipation after the water heater has finished using it.

[0047] During the combustion of gas, a certain amount of oxygen is required. To facilitate use in different environments, the combustion chamber 4 needs to be connected to the outside to allow outside air to enter. In this embodiment, an air inlet connecting pipe 9 is provided between the annular body 55 and the body 1. The air inlet connecting pipe 9 has an air inlet 91. An air inlet sleeve 92 is provided on the outside of the air inlet connecting pipe 9. The air inlet sleeve 92 includes a fixing part 921 fixed to the outside of the annular body 55 or the body 1. The end of the fixing part 921 is also provided with an annular part 922 spaced apart from the air inlet connecting pipe 9. The outer end of the annular part 922 has an opening that connects to the outside. The opening of the outer end of the annular part 922 faces the body 1. A protruding limiting part 93 is also provided on the outside of the air inlet connecting pipe 9. The limiting part 93 abuts against or is spaced apart from the inner side of the annular part 922. Combustion chamber 4 is connected to the outside at the air inlet connection pipe 9, allowing outside air to enter combustion chamber 4. This ensures normal combustion of gas during use. At the same time, to prevent the air inlet 91 from being directly exposed, an air inlet sleeve 92 is provided on the outside of the air inlet 91. At this time, the air inlet sleeve 92 is fixed to the outside of the annular body 55 or the main body 1 by the fixing part 921. Annular parts 922 with a certain spacing are provided on the outside of the air inlet 91. One end of the annular part 922 is designed to be open, so that outside air can enter the interior of the main body 1 through the opening of the annular part 922 and the air inlet 91, thereby ensuring normal combustion of gas during the combustion process.

[0048] Meanwhile, the annular portion 922 is located outside the air inlet 91, which can prevent the air inlet 91 from being directly exposed. During the combustion of gas, it will not directly contact the interior of the main body 1 through the air inlet 91, thus providing a certain degree of safety. At the same time, since the annular portion 922 is fixed to the outside of the air inlet 91 by the fixing portion 921, the air inlet 91 is blocked when viewed from the direction of the hot and cold water exchanger 5. Thus, when fixing the water heater outside the vehicle, it is only necessary to place the water heater slightly tilted so that one side of the hot and cold water exchanger 5 is higher than the side of the main body 1. At this time, the opening of the annular portion 922 faces downward, which can prevent rainwater from the outside environment from entering through the air inlet 91.

[0049] Furthermore, to prevent the annular portion 922 from easily deforming during use, several protruding limiting portions 93 are provided on the inner side of the annular portion 922. The limiting portions 93 abut against or are spaced at a certain distance from the inner side of the annular portion 922. This way, even if the annular portion 922 is subjected to external force, it is not easy to completely deform, thereby ensuring that the side opening of the annular portion 922 is always connected to the outside. At the same time, the limiting portions 93 can also form a blocking effect on the air inlet 91, preventing external objects from entering the air inlet 91.

[0050] In order to avoid affecting the main body 1 during the combustion of gas, in this embodiment, the gas chamber is ring-shaped, and a fixing groove 41 is provided on the outside of the gas chamber. The end of the main body 1 away from the hot and cold water exchanger 5 is provided with a water inlet and a water outlet. The water inlet and the water outlet are respectively connected to the two ends of the heating pipe 51 through the cold water inlet pipe 52 and the hot water outlet pipe 53. The cold water inlet pipe 52 and the hot water outlet pipe 53 are respectively clamped in the fixing groove 41. At this time, the combustion chamber 4 is ring-shaped and fitted around the outside of the ignition needle 32, thus preventing the ignition needle 32 and the flame from directly contacting the inner wall of the main body 1 during combustion. There is a certain gap between the outside of the combustion chamber 4 and the inner wall of the main body 1, which can form effective heat dissipation. At the same time, the outside of the combustion chamber 4 is connected to the cold water inlet pipe 52 and the hot water outlet pipe 53 through the fixing groove 41. One end of the cold water inlet pipe 52 and the hot water outlet pipe 53 are connected to the two ends of the heated fruit, and the other end is connected to the water inlet and water outlet of the end of the main body 1, respectively, thus forming a complete water flow channel. At this time, the combustion chamber 4 is suspended and fixed inside the main body 1 through the cold water inlet pipe 52 and the hot water outlet pipe 53, so it will not directly contact the main body 1. In this way, during the combustion process, the heat transferred from the combustion chamber 4 to the main body 1 can be further reduced.

[0051] Finally, in order to better secure the water heater to the outside of the car, in this embodiment, the main body 1 and / or the hot and cold water exchanger 5 are provided with a fixing buckle 8, which is fixed to the outside of the car by fasteners.

[0052] For water heaters, this also includes a water-electric sensing valve located at the water outlet and a flameout-proof thermocouple at the gas nozzle 2.

[0053] Specifically, cold water flows through the inlet port to the cold water inlet pipe 52 of the combustion chamber 4, then to the heating pipe 51 of the hot and cold water exchanger 5, and finally out through the outlet pipe 53. When the cold water flowing out of the hot water outlet pipe 53 passes through the water-electric sensing valve, it sends a signal to the control circuit board to start the pulse igniter. At the same time, the gas solenoid valve 71 is opened to release gas, which is sprayed out through the gas nozzle. At this time, the ignition needle 32 ignites the sprayed gas, heating the water in the heating pipe 51. After ignition, the power supply 6 of the pulse igniter is cut off. Because the anti-flameout gas shut-off thermocouple is heated, it sends a signal to the circuit board. At this time, the gas solenoid valve 71 continues to open and combustion continues. In case of accidental flameout, the anti-flameout gas shut-off thermocouple cools down and sends a signal to the circuit board to cut off the gas, preventing gas leakage caused by accidental flameout. When the power supply 6 is turned off, because the water-electric sensing valve stops flowing, the circuit board closes the gas solenoid valve 71 to cut off the gas and stop combustion.

[0054] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0055] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An outdoor vehicle-mounted gas water heater, characterized in that, The device includes a main body, a gas nozzle inside the main body, an ignition structure outside the gas nozzle, a combustion chamber at the end of the main body located outside the igniter, a hot and cold water exchanger outside the main body, a heating pipe in the hot and cold water exchanger, and a cold water inlet pipe and a hot water outlet pipe at both ends of the heating pipe, respectively.

2. The outdoor vehicle-mounted gas water heater according to claim 1, characterized in that, The hot and cold water exchanger has a cylindrical structure, and / or the hot and cold water exchanger and the main body have an integral cylindrical structure.

3. The outdoor vehicle-mounted gas water heater according to claim 1 or 2, characterized in that, A power source is provided on the outside of the main body. The power source is fixedly connected to the main body via a buckle, or is detachably connected or separately connected. The power source is electrically connected to the circuit board inside the main body via a wire.

4. The outdoor vehicle-mounted gas water heater according to claim 3, characterized in that, The main body is provided with a fixed base on its outer side. The fixed base is provided with a first contact terminal. The first contact terminal is electrically connected to the circuit board inside the main body through a wire. The bottom of the power supply is provided with a second contact terminal. The bottom of the power supply is inserted into the fixed base and fixedly connected to the fixed base. The first contact terminal and the second contact terminal abut against each other to electrically connect the power supply to the circuit board.

5. The outdoor vehicle-mounted gas water heater according to claim 4, characterized in that, The power supply is cylindrical in shape, and a light source is provided at one end of the power supply. The light source is electrically connected to the power supply.

6. The outdoor vehicle-mounted gas water heater according to claim 3, characterized in that, On the other side of the main body corresponding to the power source, there is also a protruding first housing. A gas solenoid valve is provided inside the first housing. The gas solenoid valve is connected to a gas nozzle through a pipe and is connected to a gas source. Or the main body is provided with a protruding second housing on the other side corresponding to the power supply, and the pulse igniter main body is provided in the second housing. The ignition structure is an ignition needle connected to the pulse igniter main body.

7. The outdoor vehicle-mounted gas water heater according to claim 3, characterized in that, The hot and cold water exchanger includes an annular body, one end of which is fixed to the end of the main body, and the other end of which is fixed with a sealing cap. The inner wall of the annular body is provided with a plurality of axially distributed connecting holes, and the two ends of the connecting holes are connected by U-shaped connectors. The connecting holes and the U-shaped connectors form a heating pipe.

8. The outdoor vehicle-mounted gas water heater according to claim 7, characterized in that, An air inlet connecting pipe is provided between the annular body and the main body. The air inlet connecting pipe has an air inlet. An air inlet sleeve is provided on the outside of the air inlet connecting pipe. The air inlet sleeve includes a fixing part fixed to the annular body or the outside of the main body. The end of the fixing part is also provided with an annular part spaced apart from the air inlet connecting pipe. The outer end of the annular part has an opening that communicates with the outside. The opening at the outer end of the annular part faces one side of the main body. The outside of the air inlet connecting pipe is also provided with a protruding limiting part. The limiting part abuts against or is spaced apart from the inner side of the annular part.

9. The outdoor vehicle-mounted gas water heater according to claim 3, characterized in that, The gas chamber is generally ring-shaped, and a fixing groove is provided on the outside of the gas chamber. The end of the main body away from the hot and cold water exchanger is provided with a water inlet and a water outlet. The water inlet and the water outlet are respectively connected to the two ends of the heating pipe through the cold water inlet pipe and the hot water outlet pipe. The cold water inlet pipe and the hot water outlet pipe are respectively clamped in the fixing groove.

10. The outdoor vehicle-mounted gas water heater according to claim 3, characterized in that, The main body and / or hot and cold water exchanger are provided with a fixing buckle on the outside, which is fixed to the outside of the vehicle by fasteners.

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