Outdoor gas-electricity dual-purpose water heater

Abstract

The utility model discloses an outdoor gas-electricity dual-purpose water heater which comprises an installation shell, and a cold water inlet and a hot water outlet are formed in the installation shell. The electric water heating assembly is installed in the installation shell and comprises an electric heating piece and a first water pipe, the first water pipe is provided with a first connector and a second connector, and the electric heating piece is used for heating water in the first water pipe; the first interface is communicated with the cold water inlet; the gas water heating assembly is mounted in the mounting shell; comprising a burner and a second water pipe, the second water pipe is provided with a third connector and a fourth connector, the third connector is communicated with the second connector, the fourth connector is communicated with the hot water outlet, and the burner is used for leading in gas to heat water in the second water pipe. The electric water heating assembly and the fuel gas water heating assembly are arranged in the mounting shell, water can be heated through fuel gas and can also be electrically heated, dual purposes are achieved, meanwhile, the water can be preheated through electric heating when the water is heated through the fuel gas, and the water heating efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to an outdoor gas-electric dual-purpose water heater. Background Art

[0002] At present, outdoor water heaters are generally used in scenes such as RVs or outdoor camping sites. Since it is inconvenient to use electricity, gas water heaters or storage electric water heaters are usually used for outdoor water heaters.

[0003] The disadvantage of gas water heaters is that they rely entirely on gas as an energy source. If there is a problem with the gas supply, such as the gas tank is exhausted, the gas pipeline is blocked, or the gas cannot be supplied normally in extreme environments (such as high altitude areas, where gas combustion efficiency is reduced), the water heater will not work, which will cause great inconvenience to users.

[0004] Storage-type electric water heaters require that all the water in the tank be heated to the set temperature before use. This can be a long wait for urgent hot water needs. Larger tanks can take longer to heat, making them less efficient in energy-constrained RV environments. The capacity of the tank determines the amount of hot water supplied; once the hot water in the tank is used up, it needs to be reheated to be hot again. This can lead to insufficient hot water supply for multiple people using hot water continuously. Furthermore, a larger water tank is required to store hot water, which, in a space-constrained RV environment, takes up valuable interior space and impacts the overall layout and practicality of the RV. Utility Model Content

[0005] In order to overcome at least one of the defects described in the above-mentioned prior art, the utility model provides an outdoor gas-electric dual-purpose water heater, which is equipped with an electric water heating component and a gas water heating component in the installation shell. It can use gas to heat water and electricity to heat water, achieving dual use. At the same time, the gas-heated water can also be preheated by electric heating to improve the hot water efficiency.

[0006] The technical solution adopted by the present invention to solve the problem is:

[0007] An outdoor gas-electric dual-purpose water heater, comprising:

[0008] An installation shell is provided with a cold water inlet and a hot water outlet;

[0009] an electric water heater assembly, installed in the installation housing, comprising an electric heater and a first water pipe, the first water pipe being provided with a first interface and a second interface, the electric heater being used to heat water in the first water pipe; the first interface being in communication with the cold water inlet;

[0010] A gas hot water component is installed in the installation shell; it includes a burner and a second water pipe, the second water pipe is provided with a third interface and a fourth interface, the third interface is connected to the second interface, and the fourth interface is connected to the hot water outlet, and the burner is used to introduce gas to heat the water in the second water pipe.

[0011] Furthermore, the first water pipe is arranged around the outer circumference of the electric heating element.

[0012] Furthermore, the second water pipe is arranged around the outer circumference of the burner.

[0013] Furthermore, the second interface is provided with a first connector, the third interface is provided with a second connector, and the first connector is threadedly connected to the second connector and sealed.

[0014] Furthermore, a first thread segment is provided on the inner circumference of the first connector, and a second thread segment is provided on the outer wall of the second connector. The second thread segment is connected to the first thread segment and threadedly engaged with the first thread segment to connect the second connector to the first connector.

[0015] Furthermore, a first abutting step is convexly provided on the outer periphery of the first connecting head, a second abutting step is convexly provided on the outer rear of the second connecting head, and a sealing member is clamped between the second abutting step and the first abutting step.

[0016] Furthermore, the installation shell is provided with a panel and an installation cavity, and the electric water heater component and the gas water heater component are both installed in the installation cavity; the electric water heater component and the gas water heater component are spaced apart in sequence from one end close to the panel to the end away from the panel; the cold water inlet and the hot water outlet are both arranged on the panel.

[0017] Furthermore, it also includes a hot water outlet pipe, which is staggered between the electric water heater component and the gas water heater component and is located on the side of the electric water heater component and the gas water heater component; one end of the hot water outlet pipe is connected to the hot water outlet, and the other end of the hot water outlet pipe is arranged at the one end and connected to the fourth interface.

[0018] Furthermore, the electric water heater component further includes a first temperature detector, and the gas water heater component further includes a second temperature detector. The first temperature detector is used to detect the heating temperature of the first water pipe, and the second temperature detector is used to detect the heating temperature of the second water pipe.

[0019] Furthermore, it also includes a smoke exhaust component installed in the installation shell, and the smoke exhaust component includes a fan, a first smoke hood and a second smoke hood; the first smoke hood is provided with a first air outlet and a second air outlet, the first air outlet is connected to the smoke outlet of the burner, and the second air outlet is connected to the air inlet of the fan; the second smoke hood is provided with a third air outlet and a fourth air outlet, the third air outlet is connected to the air outlet of the fan, and the fourth air outlet is connected to the outside of the installation shell.

[0020] In summary, the present invention has the following technical effects:

[0021] 1. Hot water, after being assisted by electric heating, can then enter a second water pipe for secondary heating with a burner. This method produces hot water faster and at a more stable temperature than directly heating cold water with a burner. Furthermore, even if unstable gas pressure leads to unstable combustion temperature, since the water in the second water pipe is preheated by electric heating, fluctuations in combustion temperature will not significantly affect the water temperature in the second water pipe, thus maintaining a stable hot water temperature. Compared to simple gas water heaters, this gas-electric dual-use water heater is less affected by fluctuations in ambient temperature and gas pressure.

[0022] 2. You can also switch to a single gas heating component or electric heating component for heating according to actual usage. As long as there is sufficient gas or electricity supply, hot water can be continuously supplied, and the usage scenario is more flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of the utility model;

[0024] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0026] Among them, the meanings of the figure marks are as follows: 10, installation shell; 11, cold water inlet; 12, hot water outlet; 13, panel; 14, installation cavity; 21, electric heating element; 22, first water pipe; 221, first interface; 222, second interface; 31, burner; 32, second water pipe; 321, third interface; 41, fan; 42, first smoke hood; 42, second smoke hood; 50, hot water outlet pipe. DETAILED DESCRIPTION

[0027] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0030] See Figure 1 、 Figure 2 as well as Figure 3 The utility model discloses an outdoor gas-electric dual-purpose water heater, which includes a mounting shell 10, an electric water heater component and a gas water heater component. A cold water inlet 11 and a hot water outlet 12 are provided on the mounting shell 10, and the electric water heater component and the gas water heater component are both mounted on the mounting shell 10.

[0031] The electric hot water assembly includes an electric heater 21 and a first water pipe 22. The first water pipe 22 is provided with a first interface 221 and a second interface 222. The electric heater 21 can heat the water in the first water pipe 22. The first interface 221 is connected to the cold water inlet 11. In addition, the gas hot water assembly includes a burner 31 and a second water pipe 32. The second water pipe 32 is provided with a third interface 321 and a fourth interface. The third interface 321 is connected to the second interface 222, and the fourth interface is connected to the hot water outlet 12. The burner 31 is used to introduce gas to heat the water in the second water pipe 32.

[0032] Based on the above structure, when using the outdoor gas-electric dual-purpose water heater of the present invention, taking the installation of the outdoor gas-electric dual-purpose water heater in an RV as an example, the electric heating element 21 can be electrically connected to the power supply equipment in the RV, so that the electric heating element 21 heats the water in the first water pipe 22. The burner 31 can be connected to the gas equipment via a gas pipe, and gas can be introduced into the burner 31 through the gas pipe for combustion. The combustion of the burner 31 can heat the water in the second water pipe 32. In this way, the outdoor gas-electric dual-purpose water heater has the following usage states:

[0033] In the first usage state, cold water can be introduced into the first water pipe 22 through the cold water inlet 11 on the installation shell 10, and the water in the first water pipe 22 is heated by the electric heating element 21. In this way, the hot water heated by the electric heating element 21 can be introduced into the third interface 321 of the second water pipe 32 through the second interface 222, that is, the water flow introduced into the second water pipe 32 can be the hot water heated by the electric heating element 21, and then the burner 31 is used to burn and generate heat, and the hot water in the second water pipe 32 that has been electrically heated is heated again. In this way, the burner 31 only needs a short period of combustion and heating to quickly extract hot water, thereby improving the efficiency of hot water production.

[0034] Especially when the outdoor temperature is low, the hot water, after being assisted by electric heating, enters the second water pipe 32 for secondary heating by the burner 31. Compared with directly heating cold water with the burner 31, the hot water is extracted faster and the water temperature is more stable. In addition, even if the gas pressure is unstable, resulting in unstable combustion temperature, since the water in the second water pipe 32 is preheated water after electric heating, the fluctuation of the combustion temperature will not have a significant impact on the water temperature of the second water pipe 32, thereby maintaining the hot water temperature. Compared with a simple gas water heater, the gas-electric dual-purpose water heater is less affected by fluctuations in the external ambient temperature and gas pressure.

[0035] In the second usage state, when the power supply is insufficient, the electric heating element 21 can be turned off. In this way, after the cold water is introduced into the first water pipe 22 through the first interface 221, the cold water is directly introduced into the second water pipe 32 through the second interface 222, and the burner 31 is started to directly heat the water in the second water pipe 32. The hot water can be discharged through the fourth interface of the second water pipe 32, that is, a single gas heating method can be used.

[0036] In the third usage state, when the gas supply is insufficient, the burner 31 can be turned off. In this way, after the cold water is introduced into the first water pipe 22 through the first interface 221, the water in the first water pipe 22 is heated by the electric heating element 21. In this way, the hot water heated by the electric heating element 21 can be introduced into the third interface 321 of the second water pipe 32 through the second interface 222, that is, the water flow introduced into the second water pipe 32 can be the hot water heated by the electric heating element 21, and the hot water can be directly discharged to the hot water outlet 12 through the fourth interface of the second water pipe 32.

[0037] It should be noted that the electric heating element 21 in this embodiment adopts the instant heating element in the prior art, such as a metal heating tube, in which the heating wire is arranged inside the heating tube, and the outside of the tube is in contact with water to transfer heat; or it is a thick film heating element, which arranges the heating material on an insulating material such as a ceramic matrix to form a heating circuit. When current passes through, the heating material generates heat, and the heat is transferred to the surface in contact with the water to quickly heat the water. The use of an instant heating element can quickly heat the water flow in the first water pipe 22 without the need to set up a water storage tank separately. That is, when hot water is extracted, the instant heating element can quickly heat the water in the first water pipe 22 without waiting for the water in the water tank to be fully heated. Hot water can be obtained in a short time by turning on the faucet, meeting the user's immediate need for hot water, such as quick hand washing, dishwashing or showering.

[0038] Furthermore, the first water pipe 22 is disposed around the outer periphery of the electric heating element 21. The water flow in the first water pipe 22 can surround the outside of the electric heating element 21, forming a surrounding heat exchange surface with the electric heating element 21. This allows for rapid heat exchange with the hot water in the first water pipe 22, achieving rapid heating. Similarly, the second water pipe 32 is disposed around the outer periphery of the burner 31. The water flow in the second water pipe 32 can surround the outside of the burner 31, forming a surrounding heat exchange surface with the burner 31. This allows for rapid heat exchange with the hot water in the second water pipe 32, achieving rapid heating. This results in faster hot water production and higher hot water usage efficiency.

[0039] Furthermore, a first connector can be provided at the second interface 222, and a second connector can be provided at the third interface 321. Since the first water pipe 22 and the second water pipe 32 belong to the electric water heater assembly and the gas water heater assembly, respectively, during assembly, the electric water heater assembly and the gas water heater assembly are assembled separately first, and then the first water pipe 22 and the second water pipe 32 are connected. Therefore, the connection between the first water pipe 22 and the second water pipe 32 needs to maintain ease of installation and tightness. Therefore, in this embodiment, the first connector at the second interface 222 and the second connector at the third interface 321 are threadedly connected to achieve quick assembly and disassembly, and the first connector and the second connector are sealed after connection to improve tightness.

[0040] Specifically, a first thread segment can be provided on the inner circumference of the first connector, and a second thread segment can be provided on the outer wall of the second connector. When the first connector and the second connector are assembled, the second thread segment is connected to the first thread segment and threadedly engaged to connect the second connector to the first connector, and disassembly and assembly can be achieved by threaded connection, which is convenient for assembly and disassembly.

[0041] Furthermore, a first abutment step is provided on the outer periphery of the first connector, and a second abutment step is provided on the outer rear protrusion of the second connector. A sealing member is clamped between the second abutment step and the first abutment step. The sealing member can be a sealing gasket or a sealing rubber ring. In this way, after the first connector and the second connector are threaded together, the sealing member is pressed by the first abutment step and the second abutment step to form a seal, so that the sealing surface formed is larger and the sealing effect is better.

[0042] Of course, the first connector and the second connector can also be connected in the plug-in manner or flange manner in the prior art, and can be sealed with a sealing rubber sleeve or a sealing rubber ring after connection.

[0043] Furthermore, the installation shell 10 is provided with a panel 13 and an installation cavity 14, and the electric water heater component and the gas water heater component are both installed in the installation cavity 14, and the electric water heater component and the gas water heater component are spaced apart in sequence from one end close to the panel 13 to the end away from the panel 13, and the cold water inlet 11 and the hot water outlet 12 are both set on the panel 13.

[0044] Because the electric water heater assembly is positioned near the panel 13, the first port 221 on the first water pipe 22 can be connected to the cold water inlet 11 on the panel 13 via a relatively short pipe, enabling rapid cold water introduction. The gas water heater assembly is spaced apart from the end plate of the electric water heater assembly facing away from the panel 13, so the second port 222 of the first water pipe 22 and the third port 321 of the second water pipe 32 can also be connected via a relatively short pipe. This reduces the length of the pipe connection, and even if a set of heating components is added, the installation space inside the housing 10 will not be excessively increased, thereby simplifying the volume of the housing 10.

[0045] More specifically, a hot water outlet pipe 50 is further provided in the above-mentioned installation shell 10. The hot water outlet pipe 50 is staggered between the electric water heating component and the gas water heating component and is arranged on the side of the electric water heating component and the gas water heating component. One end of the hot water outlet pipe 50 is connected to the hot water outlet 12, and the other end of the hot water outlet pipe 50 is arranged to be connected to the fourth interface. That is, the hot water outlet pipe 50 is used to guide the hot water of the second water pipe 32 of the gas heating component located away from the panel 13 from the side to the hot water outlet 12 of the panel 13, and the overall length of the installation shell 10 will not be lengthened due to the additional hot water outlet pipe 50.

[0046] Furthermore, the electric water heater component further includes a first temperature detector, and the gas water heater component further includes a second temperature detector. The first temperature detector is used to detect the heating temperature of the first water pipe 22 , and the second temperature detector is used to detect the heating temperature of the second water pipe 32 .

[0047] Furthermore, the outdoor gas-electric dual-purpose water heater in this embodiment also includes a smoke exhaust assembly, which is disposed within the mounting housing 10. Specifically, the smoke exhaust assembly includes a fan 41, a first smoke hood 42, and a second smoke hood 43. The first smoke hood 42 is provided with a first air vent and a second air vent, which connect the first air vent to the smoke outlet of the burner 31, and the second air vent is connected to the air inlet of the fan 41. In addition, the second smoke hood 42 is provided with a third air vent and a fourth air vent, the third air vent is connected to the air outlet of the fan 41, and the fourth air vent is connected to the outside of the mounting housing 10. That is, the fan 41 is disposed between the first smoke hood 42 and the second smoke hood 43.

[0048] This smoke exhaust assembly is used to exhaust smoke from the burner 31 of the gas water heater assembly. During smoke exhaust, the first air outlet of the first smoke hood 42 is connected to the smoke outlet of the burner 31, the second air outlet of the first smoke hood 42 is connected to the air inlet of the fan 41, the air outlet of the fan 41 is connected to the third air outlet of the second smoke hood 42, and the fourth air outlet of the second smoke hood 42 can be connected to the outside. When the fan 41 is started, the air generated by the fan 41 flows from the first air outlet to the second air outlet, then is guided by the fan 41 to the third air outlet, and then discharged through the fourth air outlet. Due to the discharge of smoke, the presence of the second smoke hood 42 guides the smoke flow, forming a relatively stable air flow field inside the smoke hood. When rainwater attempts to enter, the air flow field can play a certain blocking and dispersing role, further reducing the chance of rainwater entering the air inlet and flowing toward the fan 41 motor, and also reducing wind noise.

[0049] Furthermore, if rainwater flows back into the second smoke hood 42 through the fourth air outlet under the action of wind, the rainwater will also be deposited in the second smoke hood 42 and will not enter the fan 41, thereby significantly reducing the risk of damage to the fan 41 motor due to water ingress.

[0050] The technical means disclosed in the present invention are not limited to those disclosed in the above-mentioned embodiments, but also include technical solutions composed of any combination of the above-mentioned technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. An outdoor gas-electric dual-purpose water heater, characterized in that: include, An installation shell is provided with a cold water inlet and a hot water outlet; an electric water heater assembly, installed in the installation housing, comprising an electric heater and a first water pipe, the first water pipe being provided with a first interface and a second interface, the electric heater being used to heat water in the first water pipe; the first interface being in communication with the cold water inlet; A gas hot water component is installed in the installation shell; it includes a burner and a second water pipe, the second water pipe is provided with a third interface and a fourth interface, the third interface is connected to the second interface, and the fourth interface is connected to the hot water outlet, and the burner is used to introduce gas to heat the water in the second water pipe.

2. The outdoor gas-electric dual-purpose water heater according to claim 1, characterized in that: The electric heating element is an instant heating element.

3. The outdoor gas-electric dual-purpose water heater according to claim 1, characterized in that: The first water pipe is arranged around the outer periphery of the electric heating element; the second water pipe is arranged around the outer periphery of the burner.

4. The outdoor gas-electric dual-purpose water heater according to claim 1, characterized in that: The second interface is provided with a first connector, and the third interface is provided with a second connector. The first connector is threadedly connected to the second connector and is sealed.

5. The outdoor gas-electric dual-purpose water heater according to claim 4, characterized in that: The inner circumference of the first connector is provided with a first thread segment, the outer wall of the second connector is provided with a second thread segment, and the second thread segment is connected to the first thread segment and threadedly engaged with the first thread segment to connect the second connector to the first connector.

6. The outdoor gas-electric dual-purpose water heater according to claim 5, characterized in that: A first abutting step is convexly provided on the outer periphery of the first connecting head, a second abutting step is convexly provided on the outer rear of the second connecting head, and a sealing member is clamped between the second abutting step and the first abutting step.

7. The outdoor gas-electric dual-purpose water heater according to any one of claims 1 to 6, characterized in that: The installation shell is provided with a panel and an installation cavity, and the electric water heater component and the gas water heater component are both installed in the installation cavity; the electric water heater component and the gas water heater component are spaced apart in sequence from one end close to the panel to the end far from the panel; the cold water inlet and the hot water outlet are both arranged on the panel.

8. The outdoor gas-electric dual-purpose water heater according to claim 7, characterized in that: It also includes a hot water outlet pipe, which is staggered between the electric water heater component and the gas water heater component and is located on the side of the electric water heater component and the gas water heater component; one end of the hot water outlet pipe is connected to the hot water outlet, and the other end of the hot water outlet pipe is arranged at the one end and connected to the fourth interface.

9. The outdoor gas-electric dual-purpose water heater according to any one of claims 1 to 6, characterized in that: The electric water heater component further includes a first temperature detector, and the gas water heater component further includes a second temperature detector. The first temperature detector is used to detect the heating temperature of the first water pipe, and the second temperature detector is used to detect the heating temperature of the second water pipe.

10. The outdoor gas-electric dual-purpose water heater according to any one of claims 1 to 6, characterized in that: It also includes a smoke exhaust component installed in the installation shell, and the smoke exhaust component includes a fan, a first smoke hood and a second smoke hood; the first smoke hood is provided with a first air outlet and a second air outlet, the first air outlet is connected to the smoke outlet of the burner, and the second air outlet is connected to the air inlet of the fan; the second smoke hood is provided with a third air outlet and a fourth air outlet, the third air outlet is connected to the air outlet of the fan, and the fourth air outlet is connected to the outside of the installation shell.

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