Outdoor portable water heater

Abstract

Disclosed in the present utility model is an outdoor portable water heater, comprising an inner bracket, wherein a combustor and a heat exchanger are mounted in the inner bracket, a smoke collecting cover is mounted at an upper end of the heat exchanger, the combustor comprises a plurality of firebars arranged side by side, the firebars are in communication with each other by means of gas distribution rods on sides, segmented self-suction valves are mounted on the gas distribution rods, a gas control valve is mounted on a gas inlet pipeline of the water heater, and a water inlet end of a heat exchange pipeline inside the heat exchanger is in communication with a cold water inlet pipe; a constant-temperature compartment is further mounted in the water heater and has a water inlet connected to a hot water pipe and a water outlet connected to a hot water outlet pipe; and a communicating pipe is provided between the cold water inlet pipe and the hot water pipe. The present utility model can solve the problems in the prior art of the inability to maintain an automatic constant temperature, the instability of the water temperature, fluctuations in the water temperature caused by changes in a water flow, the instability of the water temperature caused by the generation of partially boiled water during each switch-on and switch-off during use, and the risk of scalding caused by increases in the water temperature during water outages.

Description

An outdoor portable water heater Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to an outdoor portable water heater. Background Art

[0002] Water heaters are common appliances in daily life. With the increasing number of people engaging in outdoor activities, portable outdoor water heaters have emerged. Existing portable water heaters are mostly gas-fired, equipped with internal burners that typically have multiple flames. These flames can only be turned on or off simultaneously, with no staged control. This inability to perform staged combustion results in a high minimum load, which prevents the heater from producing appropriately warm water during high summer inlet water temperatures. Furthermore, unstable gas inlet pressure can easily cause the water output from the water heater to fluctuate between hot and cold. Furthermore, existing portable water heaters lack automatic temperature control due to valve limitations, requiring manual adjustment of the water flow and power level. When a typical outdoor water heater is turned off and then on again during a shower, the hot water is too hot to use, followed by a cold water cycle that is also too cold to use. This water is wasted. Conserving water resources is particularly important when camping outdoors. Furthermore, the high-temperature hot water cycle poses a risk of burns, necessitating improvements to portable outdoor water heaters.

[0003] Utility Model Content

[0004] The utility model provides an outdoor portable water heater, which can solve the problems in the prior art of not being able to automatically maintain a constant temperature, fluctuating temperatures, excessively high water temperature in summer, water temperature fluctuations caused by fluctuations in inlet water temperature or changes in water flow, fluctuating temperatures caused by semi-cooked water generated each time the water heater is turned on and off during use, and the risk of scalding due to increased water temperature when the water is not in use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an outdoor portable water heater, comprising an inner bracket, a burner and a heat exchanger are installed inside the inner bracket, a smoke collecting hood is installed on the upper end of the heat exchanger, the burner comprises a plurality of fire bars arranged side by side, the fire bars are connected by gas distribution rods on the sides, a segmented self-priming valve is installed on the gas distribution rod, an air intake joint connected to the air intake pipe is provided on the gas distribution rod, a gas regulating valve is installed on the air intake pipe of the water heater, and the air intake pipe is provided with a gas regulating valve. The end of the water heater is connected to a portable gas cylinder. A controller is also installed in the water heater. The controller is electrically connected to at least the segmented self-priming valve and the gas regulating valve. The water inlet end of the internal heat exchange pipeline of the heat exchanger is connected to the cold water inlet pipe. A hot water pipe connected to the water outlet end of the internal heat exchange pipeline is provided on the outside of the heat exchanger. A constant temperature warehouse is also installed inside the water heater. The constant temperature warehouse has a water inlet connected to the hot water pipe and a water outlet connected to the hot water outlet pipe. A connecting pipe is provided between the cold water inlet pipe and the hot water pipe.

[0006] Preferably, the segmented self-priming valve is a pulse self-priming valve.

[0007] Preferably, a water flow sensor is installed on the water inlet pipe of the water heater, and the water flow sensor is electrically connected to the controller.

[0008] Preferably, the interior of the water heater is also equipped with an anti-dump switch electrically connected to the controller, and also includes a thermostat, an inlet water temperature probe and an outlet water temperature probe respectively installed on the water inlet pipe and the water outlet pipe, and the thermostat, inlet water temperature probe and outlet water temperature probe are all electrically connected to the controller.

[0009] Preferably, side panels are installed on both sides of the inner bracket by hidden screws, a front panel and an air intake rear cover are installed on the front and rear sides of the inner bracket respectively, an upper cover is installed on the top of the inner bracket, and the lower ends of the upper cover are connected to the upper air intake grille by hidden screws, a base is provided on the lower side of the inner bracket, and the upper ends of the base are connected to the lower air intake grille by hidden screws, a number of buckle slots are provided on the side panels, and buckle plates that are inserted into the corresponding buckle slots for buckle connection are arranged on the sides of the front panel, air intake rear cover, upper air intake grille and lower air intake grille facing the inner bracket.

[0010] Preferably, horizontally extending bracket plates are installed on both sides of the smoke collecting hood, and the lower end of the upper cover is connected to the bracket plates by screws.

[0011] Preferably, one end of the connecting pipe is connected to one end of the cold water inlet pipe close to the heat exchanger, a cold water outlet pipe is arranged side by side on one side of the hot water outlet pipe, the cold water outlet pipe is connected to the cold water inlet pipe, and the constant temperature chamber is installed on one side of the heat exchanger and located on the upper side of the hot water outlet pipe.

[0012] Preferably, the smoke hood includes a smoke hood body, which includes a top plate and side plates located on both sides of the top plate. A rotatable smoke hood air guide plate is laterally arranged inside the smoke hood body, and rotating ears are arranged at both ends of the smoke hood air guide plate. A rotating shaft seat is installed on the side plates on both sides of the smoke hood body, and a rotating shaft connected to the rotating ears is arranged on the rotating shaft seat.

[0013] Preferably, an upper baffle connected to the top plate is provided on the upper middle side of the smoke hood air guide plate, and a folded edge portion extending inward is provided at the lower end of the side plate. Front and rear support plates are connected front to back between the folded edges on both sides, and extension portions are provided at both ends of the front and rear support plates and are mounted on the upper side of the folded edge portion.

[0014] Preferably, a downwardly extending limiting plate is provided in the middle of the folding portion, and the front and rear support plates lean against the limiting plate to form a rectangular mounting structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By adding a segmented self-priming valve to the gas distribution rod, all or part of the fire row in the burner can be switched on and off, which can achieve a lower load. At the same time, by installing a gas regulating valve, the inlet pressure can fluctuate within a certain range without affecting the valve back pressure, making the combustion stable and not causing the water temperature to fluctuate. At the same time, the valve back pressure of the valve body can be adjusted lower and the segmented self-priming valve controls the opening of part of the fire row. The combination of the two can make the output power of the whole machine lower than that of ordinary water heaters, completely solving the problem that the commonly used water-gas linkage valve solution cannot be turned down under small loads and the water outlet temperature is high in summer. At the same time, the pulse self-priming valve adopts pulse control valve body switch, does not need to maintain voltage, and is energy-saving and environmentally friendly.

[0017] 2. The purpose of adding a constant temperature chamber is to use the water in the tank to mix the new high-temperature hot water and the raw water that has not been heated to the set temperature during the start-up of the water heater, so as to minimize the fluctuation of the outlet temperature and solve the problem of hot and cold water temperature when the gas water heater stops and starts.

[0018] 3. The smoke hood uses a connection structure of rotating ear and rotating shaft seat to install the smoke hood air guide plate. This makes the smoke hood air guide plate not only simple to install, but also has relatively small resistance when rotating, which can meet the blowing standard test and has high stability. In addition, the combination structure of front and rear support plates and limit plates can form a rectangular installation structure.

[0019] 4. An internal bracket is set inside to protect the core components. The external shell adopts a snap-on structure to assemble and bear the force on the internal bracket. The installation and disassembly are relatively simple, screw connections are rarely used, and the appearance is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional exploded structural diagram of the present invention;

[0021] Figure 2 is a partially exploded structural diagram of the present invention;

[0022] FIG3 is an enlarged structural diagram of point A in FIG1 ;

[0023] FIG4 is an enlarged structural diagram of point B in FIG1 ;

[0024] Figure 5 is a three-dimensional diagram of the internal structure of the present invention;

[0025] Figure 6 is a three-dimensional diagram of the internal structure of the present invention;

[0026] FIG7 is a schematic diagram of a three-dimensional exploded state of the smoke collecting hood of the present invention;

[0027] FIG8 is a three-dimensional structural diagram of the smoke collecting hood of the present invention;

[0028] Figure 9 is a schematic diagram of the electrical connection of the present invention;

[0029] FIG10 is a three-dimensional structural diagram of the burner of the present invention. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] As shown in Figures 1-10, the utility model provides an outdoor portable water heater, including an inner bracket 17, a burner 4 and a heat exchanger 3 are installed inside the inner bracket 17, a smoke hood 2 is installed on the upper end of the heat exchanger 3, the burner 4 includes a plurality of fire bars 47 arranged side by side, the fire bars 47 are connected through the side gas distribution rods 46, a segmented self-priming valve 43 is installed on the gas distribution rod 46, an air intake connector 48 connected to the air intake pipe is provided on the gas distribution rod 46, a gas regulating valve 44 is installed on the air intake pipe of the water heater, and the end of the air intake pipe is connected to the utility model. The portable gas cylinder 6 is connected, and the water heater is also equipped with a controller 41, which is electrically connected to at least the segmented self-priming valve 43 and the gas regulating valve 44. The water inlet end of the internal heat exchange pipeline of the heat exchanger 3 is connected to the cold water inlet pipe 36, and the outside of the heat exchanger 3 is provided with a hot water pipe 32 connected to the water outlet end of the internal heat exchange pipeline. A constant temperature warehouse 33 is also installed inside the water heater, and the constant temperature warehouse 33 has a water inlet connected to the hot water pipe 32 and a water outlet connected to the hot water outlet pipe 34. A connecting pipe 38 is provided between the cold water inlet pipe 36 and the hot water pipe 32.

[0032] Specifically, the segmented self-priming valve 43 is a pulse self-priming valve, and the gas regulating valve can make the intake air pressure more stable, so that the combustion is stable and the water temperature will not fluctuate. At the same time, the valve back pressure of the valve body can be adjusted to be lower, which solves the problem that the commonly used water-gas linkage valve solution cannot be lowered under small loads and the outlet water temperature is high in summer. At the same time, a water flow sensor 42 is installed on the water inlet pipe of the water heater. The water flow sensor 42 is electrically connected to the controller 41, which can make the starting flow lower and adapt to a wider range of water pressures.

[0033] In addition, the interior of the water heater is also equipped with an anti-dump switch 45 electrically connected to the controller 41, which has an anti-dump protection function. It also includes a thermostat 49, an inlet water temperature probe 410 and an outlet water temperature probe 411 installed on the water inlet pipe and the water outlet pipe respectively. The thermostat 49, the inlet water temperature probe 410 and the outlet water temperature probe 411 are all electrically connected to the controller 41. The inlet water temperature probe 410 and the outlet water temperature probe 411 can monitor the inlet and outlet water temperatures, and the thermostat 49 can protect the water channel. When the water flow is small and the water temperature is too high, the heat exchanger can be prevented from drying out.

[0034] In this embodiment, as shown in Figures 1-4, side panels 11 are installed on both sides of the inner bracket 17 by hidden screws, and a front panel 14 and an air intake rear cover 12 are installed on the front and rear sides of the inner bracket 17 respectively. An upper cover 18 is installed on the top of the inner bracket 7, and the lower ends of the upper cover 18 are connected to the upper air intake grille 13 by hidden screws. A base 15 is provided on the lower side of the inner bracket 17, and the upper ends of the base 15 are connected to the lower air intake grille 16 by hidden screws. The side panels 11 are provided with a plurality of buckle grooves 112, and the sides of the front panel 14, the air intake rear cover 12, the upper air intake grille 13 and the lower air intake grille 16 facing the inner bracket 17 are arranged with buckle plates 121 that are inserted into the corresponding buckle grooves 112 for buckle connection. Specifically, the outer shell of the water heater is composed of the side panels 11, the upper cover 18, the front panel 14, the air intake rear cover 12, the upper air intake grille 13 and the lower air intake grille 16. The upper cover 18, the front panel 14, the air intake rear cover 12, the upper air intake grille 13 and the lower air intake grille 16 are all connected to the side panels 11 by snapping the buckle plates 121 with the buckle slots 112. Therefore, during assembly, the side panels 11 are first fixed to the inner brackets 17 with screws connected from the inside, and the screws are not visible from the outside. After the side panels 1 are installed, the upper air intake grille 13 is fixed to the upper cover 18, and the lower air intake grille 16 is fixed to the base 15 in the same connection method. Then all the components are assembled and connected to the side panels 11 through the buckle plates 121. The same method is used for disassembly, which is very simple.

[0035] In order to improve the pressure resistance of the upper cover 18, horizontally extending bracket plates 19 are installed on both sides of the smoke hood 2. The lower end of the upper cover 18 is connected to the bracket plate 19 by screws. The bracket plate 19 can provide auxiliary support for the upper cover 18 to improve the overall strength of the water heater.

[0036] In order to improve the strength of the side panel 11, the edges of the side panel 11 are provided with folded edges, and the buckle slots 112 are provided on the folded edges. Multiple screw holes can be provided on the folded edges, and the side panel 11 can be fixedly connected to the inner bracket 17 by screws passing through the screw holes.

[0037] In this embodiment, one end of the connecting pipe 38 is connected to the end of the cold water inlet pipe 36 close to the heat exchanger 3, and a cold water outlet pipe 35 is arranged side by side on one side of the hot water outlet pipe 34. The cold water outlet pipe 35 is connected to the cold water inlet pipe 36. The constant temperature chamber 33 is installed on one side of the heat exchanger 3 and is located on the upper side of the hot water outlet pipe 34. When the water heater is used in the middle of being shut down and used again, the cold water in the cold water inlet pipe 36 that has not undergone heat exchange is introduced into the hot water pipe 32 through the connecting pipe 38 and is connected to the high temperature chamber 33 that absorbs a large amount of heat in the water pipe after being shut down. The warm water is mixed and then enters the constant temperature chamber 33, where it mixes with the water already in the constant temperature chamber 33 before being discharged. A portion of raw water that has not been heated to the operating temperature during startup also enters the constant temperature chamber 33, where it mixes with the water already in the constant temperature chamber 33 to reduce the temperature difference before being discharged. Therefore, the device can control the outlet water temperature difference between starting and stopping the machine to a very small range, so the problem of very hot or very cold water will not occur, thereby avoiding the risk of high temperature burns. One end of the connecting pipe 38 is connected to the end of the cold water inlet pipe 36 near the heat exchanger 3, and the length of the connecting pipe 38 does not need to be very long. A cold water outlet pipe 35 is provided side by side with the hot water outlet pipe 34, and the cold water outlet pipe 35 is connected to the cold water inlet pipe 36. The constant temperature chamber 33 is installed on one side of the heat exchanger 37 and is located above the hot water outlet pipe 34, so that the warm water in the constant temperature chamber 33 can be discharged from the hot water outlet pipe 34 immediately.

[0038] In this embodiment, the smoke hood 2 includes a smoke hood body 21, which includes a top plate 211 and side plates 212 located on both sides of the top plate 211. A rotatable smoke hood air guide plate 24 is horizontally arranged inside the smoke hood body 21. Rotating ears 241 are arranged at both ends of the smoke hood air guide plate 24. A rotating shaft seat 22 is installed on the side plates 212 on both sides of the smoke hood body 21. A rotating shaft 221 is extended inwardly and connected to the rotating ear 241 on the rotating shaft seat 22. Specifically, the smoke hood air guide plate 2 The hood air guide plate 24 is directly connected to the rotating shaft 221 by rotating the lug 241, so the installation of the hood air guide plate 24 is very convenient. There is no blocking structure on the surface of the hood air guide plate 24, which will not affect the rotation of the hood air guide plate 24. The hood air guide plate 24 can rotate up and down around the rotating shaft 221. The normal state is the open state, that is, the smoke exhaust state, and the hood air guide plate 24 rotates upward. When there is wind from outside that blows towards the hood, the windward side of the hood air guide plate 24 is closed and the other side is open, thereby preventing wind from entering the hood.

[0039] Among them, an upper baffle 23 connected to the top plate 211 is provided on the upper middle side of the smoke hood air guide plate 24, and a folded edge portion 213 extending inward is provided at the lower end of the side plate 212. Front and rear support plates 25 are connected front and back between the folded edges 213 on both sides, and both ends of the front and rear support plates 25 are provided with extension portions 251 mounted on the upper side of the folded edge portion 213. The lower end of the smoke hood body 21 can be strengthened and fixed through the front and rear support plates 25, which is convenient for installation and fixation with the heat exchanger.

[0040] A downwardly extending stop plate 214 is provided in the middle of the folded edge portion 213. The front and rear support plates 25 and the stop plate 214 abut against each other to form a rectangular mounting structure. This rectangular mounting structure is strong and can meet installation requirements. The shaft seat 22 is mounted on the outside of the side plate 212, and its shaft 221 passes through the side plate 212 and is connected to the rotating lug 241.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0042] In addition, the terms "first," "second," and so on, used in this utility model are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0043] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0044] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

Claims

1. An outdoor portable water heater, characterized in that: The water heater comprises an inner bracket (17), wherein a burner (4) and a heat exchanger (3) are installed inside the inner bracket (17), a smoke collecting hood (2) is installed on the upper end of the heat exchanger (3), the burner (4) comprises a plurality of fire bars (47) arranged side by side, the fire bars (47) are connected to each other through a gas distribution rod (46) on the side, a segmented self-priming valve (43) is installed on the gas distribution rod (46), an air intake joint (48) connected to an air intake pipeline is provided on the gas distribution rod (46), a gas regulating valve (44) is installed on the air intake pipeline of the water heater, the end of the air intake pipeline is connected to a portable gas cylinder (6), and the water heater A controller (41) is also installed in the water heater, and the controller (41) is electrically connected to at least a segmented self-priming valve (43) and a gas regulating valve (44). The water inlet end of the internal heat exchange pipeline of the heat exchanger (3) is connected to the cold water inlet pipe (36). A hot water pipe (32) connected to the water outlet end of the internal heat exchange pipeline is arranged on the outside of the heat exchanger (3). A constant temperature chamber (33) is also installed inside the water heater, and the constant temperature chamber (33) has a water inlet connected to the hot water pipe (32) and a water outlet connected to the hot water outlet pipe (34). A connecting pipe (38) is arranged between the cold water inlet pipe (36) and the hot water pipe (32).

2. The outdoor portable water heater according to claim 1, characterized in that: The segmented self-priming valve (43) is a pulse self-priming valve.

3. The outdoor portable water heater according to claim 1, characterized in that: A water flow sensor (42) is installed on the water inlet pipe of the water heater, and the water flow sensor (42) is electrically connected to the controller (41).

4. The outdoor portable water heater according to claim 1, characterized in that: The water heater is also provided with an anti-dumping switch (45) electrically connected to the controller (41), and further comprises a thermostat (49), an inlet water temperature probe (410) and an outlet water temperature probe (411) respectively installed on the inlet pipe and the outlet pipe, wherein the thermostat (49), the inlet water temperature probe (410) and the outlet water temperature probe (411) are all electrically connected to the controller (41).

5. The outdoor portable water heater according to claim 1, characterized in that: Side panels (11) are installed on both sides of the inner bracket (17) by hidden screws, and a front panel (14) and an air intake rear cover (12) are installed on the front and rear sides of the inner bracket (17) respectively. An upper cover (18) is installed on the top of the inner bracket (7), and the lower ends of the upper cover (18) are connected to the upper air intake grille (13) by hidden screws. A base (15) is arranged on the lower side of the inner bracket (17), and the upper ends of the base (15) are connected to the lower air intake grille (16) by hidden screws. The side panels (11) are provided with a plurality of buckle grooves (112), and buckle plates (121) are arranged on the sides of the front panel (14), the air intake rear cover (12), the upper air intake grille (13) and the lower air intake grille (16) facing the inner bracket (17). The buckle plates (121) are inserted into the corresponding buckle grooves (112) for buckle connection.

6. The outdoor portable water heater according to claim 5, characterized in that: Horizontally extending support plates (19) are installed on both sides of the smoke collecting hood (2), and the lower end of the upper cover (18) is connected to the support plates (19) by screws.

7. The outdoor portable water heater according to claim 1, characterized in that: One end of the connecting pipe (38) is connected to one end of the cold water inlet pipe (36) close to the heat exchanger (3), a cold water outlet pipe (35) is arranged side by side on one side of the hot water outlet pipe (34), and the cold water outlet pipe (35) is connected to the cold water inlet pipe (36). The constant temperature chamber (33) is installed on one side of the heat exchanger (3) and is located on the upper side of the hot water outlet pipe (34).

8. The outdoor portable water heater according to claim 1, characterized in that: The smoke collecting hood (2) comprises a smoke collecting hood body (21), which comprises a top plate (211) and side plates (212) located on both sides of the top plate (211); a rotatable smoke collecting hood air guide plate (24) is transversely arranged inside the smoke collecting hood body (21); rotating ears (241) are arranged at both ends of the smoke collecting hood air guide plate (24); a rotating shaft seat (22) is installed on the side plates (212) on both sides of the smoke collecting hood body (21); a rotating shaft (221) is arranged on the rotating shaft seat (22) and extends transversely inwardly and is connected to the rotating ears (241).

9. The outdoor portable water heater according to claim 8, characterized in that: An upper baffle (23) connected to the top plate (211) is arranged on the upper middle side of the smoke hood air guide plate (24), a folded edge portion (213) extending inward is arranged at the lower end of the side plate (212), front and rear support plates (25) are connected front and back between the folded edges (213) on both sides, and extension portions (251) mounted on the upper side of the folded edges (213) are arranged at both ends of the front and rear support plates (25).

10. The outdoor portable water heater according to claim 9, characterized in that: A downwardly extending limiting plate (214) is provided in the middle of the folded edge portion (213), and the front and rear supporting plates (25) are abutted against the limiting plate (214) to form a rectangular installation structure.

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