Gas water heater for motor home

Abstract

The utility model discloses a gas water heater for a motor home, which comprises a shell and a burner assembly arranged in the shell, and the burner assembly comprises a gas inlet pipe, a gas proportional valve connected with the gas inlet pipe, a gas distribution rod assembly connected with the gas proportional valve and a burner connected with the gas distribution rod assembly. Wherein the gas distribution rod assembly comprises a gas distribution rod and a gas distribution valve, a gas main path and a plurality of gas branch paths communicated with the gas main path are formed in the gas distribution rod, and a plurality of gas outlet holes are formed in the gas branch paths; the gas dividing valve is arranged on the gas branch and used for opening or closing the gas branch. Therefore, by arranging the gas dividing rod assembly, opening and closing of the gas dividing valve can be dynamically adjusted according to the water temperature requirement, when the gas dividing valve is closed, a gas branch can be closed, the gas output amount is reduced, then the minimum temperature rise of the water heater is effectively reduced, the energy efficiency and the user experience are improved, and remarkable market competitiveness is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted gas water heaters, in particular to a gas water heater for a recreational vehicle. Background Art

[0002] This section only provides background information related to the present application to help those skilled in the art understand the present application more thoroughly and accurately, and it is not necessarily prior art.

[0003] At present, RVs have gradually become a means of travel for people's daily travel. During the driving process, the driving time can reach seven or eight hours or even more than ten hours. If passengers can have hot water to wash during the long ride, it can greatly reduce passengers' fatigue.

[0004] Therefore, some car water heaters used in RVs have appeared on the market, but the car water heaters on the market generally have the problem of high minimum temperature rise, and the temperature control is not smart enough and the energy efficiency is low, resulting in poor user experience. Therefore, there is a need to further improve the current car water heaters. Utility Model Content

[0005] In order to overcome the defects of the above-mentioned prior art, the utility model provides a gas water heater for RVs. By adding a gas distribution rod assembly in the burner, the minimum temperature rise of the gas water heater can be reduced, the energy efficiency can be improved, and the user experience can be enhanced.

[0006] The technical solution adopted by the utility model to solve the problem is:

[0007] A gas water heater for a recreational vehicle, comprising:

[0008] case;

[0009] A burner assembly is arranged in the shell; the burner assembly comprises a gas inlet pipe, a gas proportional valve connected to the gas inlet pipe, a gas distribution rod assembly connected to the gas proportional valve, and a burner connected to the gas distribution rod assembly;

[0010] The gas distribution rod assembly includes a gas distribution rod and a gas distribution valve. A main gas circuit and a plurality of gas branches connected to the main gas circuit are formed in the gas distribution rod. A plurality of gas outlet holes are provided on the gas branches. The gas distribution valve is arranged on the gas branches and is used to open or close the gas branches.

[0011] The main gas path is connected to the gas proportional valve, and the gas outlet is connected to the burner.

[0012] Furthermore, a main gas circuit and a first gas branch circuit and a second gas branch circuit connected to the main gas circuit are formed in the gas distribution rod, and a gas distribution valve is arranged on the second gas branch circuit and is used to open or close the second gas branch circuit.

[0013] Furthermore, the first gas branch line is provided with three gas outlet holes arranged side by side and at intervals, and the second gas branch line is provided with two gas outlet holes arranged side by side and at intervals.

[0014] Furthermore, the gas separation valve includes a valve body, a valve stem connected to a driving end of the valve body, and a sealing component arranged at an end of the valve stem, wherein the sealing component is used to open or close the second gas branch.

[0015] Furthermore, it also includes a water outlet pipe arranged in the shell, one end of the water outlet pipe is connected to the hot water outlet on the shell, and the water outlet pipe is provided with a safety pressure relief valve and a drainage pipe connected to the safety pressure relief valve.

[0016] Furthermore, it also includes a water tank housing, a water inlet pipe and a heat exchanger arranged in the housing and above the burner, wherein:

[0017] The heat exchanger is arranged in the water tank housing;

[0018] One end of the water inlet pipe is connected to the cold water inlet on the shell, and the other end of the water inlet pipe is wound around the water tank shell and connected to the water inlet end of the heat exchanger;

[0019] The other end of the water outlet pipe is communicated with the water outlet end of the heat exchanger.

[0020] Furthermore, the water inlet pipe is provided with a water inlet temperature probe and a water flow sensor for detecting the water flow rate, the water outlet pipe is provided with a water outlet temperature probe, a main control board is installed in the shell, and the water flow sensor, the water inlet temperature probe, the water outlet temperature probe and the gas proportional valve are all electrically connected to the main control board.

[0021] Furthermore, it also includes a constant temperature water tank arranged in the shell, the water inlet end of the constant temperature water tank is provided with a three-way valve, one end of the three-way valve is connected to the other end of the water outlet pipe, the other end of the three-way valve is connected to the safety pressure relief valve, and the water outlet end of the constant temperature water tank is connected to the hot water outlet on the shell through a water pipe.

[0022] Furthermore, it also includes a smoke exhaust component arranged in the shell, and the smoke exhaust component includes a smoke exhaust hood arranged above the heat exchanger, a smoke exhaust pipe connected to the smoke exhaust port on the shell, and a fan respectively connected to the smoke exhaust hood and the smoke exhaust pipe.

[0023] Furthermore, the shell includes an outer shell and a front panel detachably connected to the front end of the outer shell. A bracket close to the front panel is also provided in the shell, an electric control box is installed on the bracket, and the main control board is arranged in the electric control box.

[0024] In summary, the utility model provides a gas water heater for RV, which has the following beneficial effects:

[0025] (1) By setting up a gas distribution rod assembly, a gas distribution valve is provided inside the gas distribution rod, so that the opening and closing of the gas distribution valve can be dynamically adjusted according to the water temperature demand. When the gas distribution valve is closed, a gas branch can be closed, thereby reducing the gas output, thereby effectively reducing the minimum temperature rise of the water heater, improving energy efficiency and user experience, and having significant market competitiveness.

[0026] (2) By setting up a gas proportional valve, a water inlet temperature probe, a water outlet temperature probe and a water flow sensor, the main control board intelligently adjusts the gas supply of the gas proportional valve through the received water flow signal and water temperature signal, thereby realizing the automatic constant temperature function and ensuring that users have a stable and comfortable hot water experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the gas water heater for RVs of the utility model;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective;

[0029] Figure 3 This is a schematic diagram of the internal structure of the gas water heater for RVs of the utility model;

[0030] Figure 4 for Figure 3 A schematic diagram of the structure from another perspective;

[0031] Figure 5 This is a schematic diagram of the structure of the burner assembly in the gas water heater for RVs of the utility model;

[0032] Figure 6 It is an exploded schematic diagram of the burner assembly of the utility model;

[0033] Figure 7 It is a cross-sectional schematic diagram of the gas distribution rod assembly of the utility model;

[0034] Figure 8 It is a cross-sectional schematic diagram of the gas distribution rod of the utility model.

[0035] The meanings of the reference numerals are as follows:

[0036] 1. Shell; 101. Outer shell; 1011. Cold water inlet; 1012. Hot water outlet; 1013. Gas inlet; 102. Front panel; 1021. Smoke outlet; 2. Burner assembly; 201. Gas inlet pipe; 202. Gas proportional valve; 203. Gas distributor rod; 2031. Gas main line; 2032. First gas branch; 2033. Second gas branch; 2034. Gas outlet; 204. Gas distributor valve; 2041. Valve body; 2042, valve stem; 2043, sealing component; 205, burner; 3, water outlet pipe; 301, water outlet temperature sensor; 4, constant temperature water tank; 5, three-way valve; 6, safety pressure relief valve; 7, drainage pipe; 8, water pipe; 9, smoke exhaust assembly; 901, smoke exhaust hood; 902, smoke exhaust pipe; 903, fan; 10, water tank shell; 11, water inlet pipe; 1101, water inlet temperature sensor; 12, water flow sensor; 13, bracket; 14, electric control box. DETAILED DESCRIPTION

[0037] 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.

[0038] 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" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the modules or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled 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.

[0040] See also Figure 1-8 The utility model provides a gas water heater for a motorhome, comprising a shell 1 and a burner assembly 2 arranged in the shell 1, the burner assembly 2 comprising a gas inlet pipe 201, a gas proportional valve 202 connected to the gas inlet pipe 201, a gas distribution rod assembly connected to the gas proportional valve 202, and a burner 205 connected to the gas distribution rod assembly.

[0041] Specifically, the gas distribution rod assembly includes a gas distribution rod 203 and a gas distribution valve 204. A main gas path 2031 and multiple gas branches connected to the main gas path 2031 are formed in the gas distribution rod 203. The gas branches are provided with multiple gas outlet holes 2034. The gas distribution valve 204 is arranged on the gas branch and is used to open or close the gas branch. One end of the gas inlet pipe 201 is connected to the gas inlet port 1013 on the shell 1, and the other end of the gas inlet pipe 201 is connected to the gas proportional valve 202. The gas proportional valve 202 is connected to the main gas path 2031, and the gas outlet hole 2034 is connected to the burner 205.

[0042] In this embodiment, a main gas circuit 2031 and a first gas branch circuit 2032 and a second gas branch circuit 2033 connected to the main gas circuit 2031 are formed in the gas distribution rod 203. The gas distribution valve 204 is arranged on the second gas branch circuit 2033 and is used to open or close the second gas branch circuit 2033. The gas distribution valve is a normally open gas distribution valve. The first gas branch circuit 2032 is provided with three gas outlet holes 2034 arranged side by side and at intervals, and the second gas branch circuit 2033 is provided with two gas outlet holes 2034 arranged side by side and at intervals.

[0043] Therefore, the gas water heater of the utility model is provided with a gas distribution rod assembly, and a gas distribution valve 204 is provided in the gas distribution rod 203, so that the opening and closing of the gas distribution valve 204 can be dynamically adjusted according to the water temperature demand. When the gas distribution valve 204 is opened, the first gas branch 2032 and the second gas branch 2033 are both opened, and the five gas outlets 2034 all discharge gas, and the corresponding five fire bars in the burner 205 are burned; when the gas distribution valve 204 is closed, the second gas branch 2033 can be closed, thereby reducing the gas discharge to three gas outlets 2034, and the corresponding three fire bars in the burner 205 are burned. Therefore, when the gas distribution valve 204 is closed, the minimum temperature rise of the water heater can be effectively reduced, the energy efficiency and user experience are improved, and it has significant market competitiveness.

[0044] Therefore, by setting up the gas distribution rod assembly, the minimum temperature rise can be effectively reduced, energy efficiency can be improved, energy waste can be reduced, and users can be guaranteed to have a stable and comfortable hot water experience.

[0045] For further information, see Figure 7The gas distribution valve 204 includes a valve body 2041, a valve stem 2042 connected to the driving end of the valve body 2041, and a sealing member 2043 arranged at the end of the valve stem 2042. Preferably, the valve body 2041 is a solenoid valve, the valve stem 2042 is a driving rod on the solenoid valve, and the sealing member 2043 is a sealing sleeve sleeved on the driving rod. Thus, the solenoid valve can drive the driving rod to move telescopically, and then drive the sealing sleeve to move to block or open the connecting port in the second gas branch 2033, thereby realizing opening or closing the second gas branch 2033.

[0046] See also Figure 3-4 The gas water heater also includes a water tank shell 10, a water inlet pipe 11, a water outlet pipe 3 and a heat exchanger (not shown in the figure) which is arranged in the shell 1 and above the burner. The heat exchanger is arranged in the water tank shell 10; one end of the water inlet pipe 11 is connected to the cold water inlet 1011 on the shell 1, and the other end of the water inlet pipe 11 is wound around the water tank shell 10 and connected to the water inlet end of the heat exchanger; one end of the water outlet pipe 3 is connected to the hot water outlet 1012 on the shell 1, and the other end of the water outlet pipe 3 is connected to the water outlet end of the heat exchanger.

[0047] Therefore, when the burner assembly 2 is started, cold water enters the heat exchanger through the water inlet pipe 11, and after heat exchange, becomes hot water and is discharged through the water outlet pipe 3 for use by users.

[0048] The outlet pipe 3 is provided with a safety relief valve 6 and a drainage pipe 7 connected to the safety relief valve 6. When the water inlet pressure is too high (greater than 100PSI), the safety relief valve 6 opens to discharge the excess internal pressure, thereby avoiding the occurrence of pipe burst accidents caused by excessive pressure in the pipeline. In addition, the safety relief valve 6 is also provided with a handle, and the user can also manually turn the handle to achieve active pressure relief, so as to be used for daily cleaning or antifreeze drainage, and the waste water can be discharged through the drainage pipe 7.

[0049] Furthermore, the water inlet pipe 11 is provided with a water inlet temperature probe 1101 and a water flow sensor 12 for detecting the water flow rate, the water outlet pipe 3 is provided with a water outlet temperature probe 301, and a main control board (not shown in the figure) is installed in the shell 1, and the water flow sensor 12, the water inlet temperature probe 1101, the water outlet temperature probe 301 and the gas proportional valve 202 are all electrically connected to the main control board.

[0050] Therefore, by setting the gas proportional valve 202, the water inlet temperature probe 1101, the water outlet temperature probe 301 and the water flow sensor 12, the main control board intelligently adjusts the gas supply of the gas proportional valve 202 through the received water flow signal and water temperature signal, thereby realizing the automatic constant temperature function and ensuring that users have a stable and comfortable hot water experience.

[0051] See also Figure 4The gas water heater also includes a constant temperature water tank 4 arranged in the shell 1, and a three-way valve 5 is provided at the water inlet end of the constant temperature water tank 4. One end of the three-way valve 5 is connected to the other end of the water outlet pipe 3, and the other end of the three-way valve 5 is connected to the safety pressure relief valve 6. The water outlet end of the constant temperature water tank 4 is connected to the hot water outlet 1012 on the shell 1 through a water pipe 8.

[0052] Therefore, by providing the constant temperature water tank 4, the temperature of the water outlet from the gas water heater can be made more stable, thus avoiding a significant drop in the water outlet temperature when starting to use.

[0053] Furthermore, it also includes a smoke exhaust assembly 9 disposed in the housing 1, and the smoke exhaust assembly 9 includes a smoke exhaust hood 901 disposed above the heat exchanger, a smoke exhaust pipe 902 connected to the smoke exhaust port 1021 on the housing 1, and a fan 903 respectively connected to the smoke exhaust hood 901 and the smoke exhaust pipe 902. Therefore, under the action of the fan 903, the exhaust smoke can be quickly drawn away and discharged through the smoke exhaust pipe 902.

[0054] See also Figure 1 and Figure 3 The shell 1 includes a shell 101 and a front panel 102 detachably connected to the front end of the shell 101. The shell 1 is also provided with a bracket 13 arranged close to the front panel 102. An electric control box 14 is installed on the bracket 13. The main control board is arranged in the electric control box 14.

[0055] Preferably, the safety pressure relief valve 6 and components for daily maintenance are arranged in the housing 101 and close to the front panel 102, so that it is convenient for the user to remove the front panel 102 for maintenance.

[0056] In summary, the utility model provides a gas water heater for RV, which has the following beneficial effects:

[0057] (i) By setting up a gas distribution rod assembly, a gas distribution valve 204 is provided in the gas distribution rod 203, so that the opening and closing of the gas distribution valve 204 can be dynamically adjusted according to the water temperature demand. When the gas distribution valve 204 is closed, a gas branch can be closed, thereby reducing the gas output, thereby effectively reducing the minimum temperature rise of the water heater, improving energy efficiency and user experience, and having significant market competitiveness.

[0058] (ii) By setting up the gas proportional valve 202, the water inlet temperature sensor 1101, the water outlet temperature sensor 301 and the water flow sensor 12, the main control board intelligently adjusts the gas supply of the gas proportional valve 202 by receiving the water flow signal and the water temperature signal, thereby realizing the automatic constant temperature function and ensuring that users have a stable and comfortable hot water experience.

[0059] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0060] It should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the modules or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] In addition, in the description of the present utility model, "multiple" and "several" mean two or more than two, unless otherwise clearly and specifically defined.

[0062] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A gas water heater for a motorhome, characterized in that: include: case; A burner assembly is arranged in the shell; the burner assembly comprises a gas inlet pipe, a gas proportional valve connected to the gas inlet pipe, a gas distribution rod assembly connected to the gas proportional valve, and a burner connected to the gas distribution rod assembly; The gas distribution rod assembly includes a gas distribution rod and a gas distribution valve. A main gas circuit and a plurality of gas branches connected to the main gas circuit are formed in the gas distribution rod. A plurality of gas outlet holes are provided on the gas branches. The gas distribution valve is arranged on the gas branches and is used to open or close the gas branches. The main gas path is connected to the gas proportional valve, and the gas outlet is connected to the burner.

2. The gas water heater for RV according to claim 1, characterized in that: A main gas circuit and a first gas branch circuit and a second gas branch circuit connected to the main gas circuit are formed in the gas distribution rod. A gas distribution valve is arranged on the second gas branch circuit and is used to open or close the second gas branch circuit.

3. The gas water heater for RV according to claim 2, characterized in that: The first gas branch line is provided with three gas outlet holes which are arranged side by side and at intervals, and the second gas branch line is provided with two gas outlet holes which are arranged side by side and at intervals.

4. The gas water heater for RV according to claim 2 or 3, characterized in that: The gas separation valve comprises a valve body, a valve stem connected to a driving end of the valve body, and a sealing component arranged at an end of the valve stem, wherein the sealing component is used to open or close the second gas branch.

5. The gas water heater for RV according to claim 1, characterized in that: It also includes a water outlet pipe arranged in the shell, one end of the water outlet pipe is connected to the hot water outlet on the shell, and the water outlet pipe is provided with a safety pressure relief valve and a drainage pipe connected to the safety pressure relief valve.

6. The gas water heater for RV according to claim 5, characterized in that: It also includes a water tank housing, a water inlet pipe and a heat exchanger arranged in the housing and above the burner, wherein: The heat exchanger is arranged in the water tank housing; One end of the water inlet pipe is connected to the cold water inlet on the shell, and the other end of the water inlet pipe is wound around the water tank shell and connected to the water inlet end of the heat exchanger; The other end of the water outlet pipe is communicated with the water outlet end of the heat exchanger.

7. The gas water heater for RV according to claim 6, characterized in that: The water inlet pipe is provided with a water inlet temperature sensing probe and a water flow sensor for detecting the water flow rate, the water outlet pipe is provided with a water outlet temperature sensing probe, a main control board is installed in the shell, and the water flow sensor, the water inlet temperature sensing probe, the water outlet temperature sensing probe and the gas proportional valve are all electrically connected to the main control board.

8. The gas water heater for RV according to claim 5, characterized in that: It also includes a constant temperature water tank arranged in the shell, a three-way valve is provided at the water inlet end of the constant temperature water tank, one end of the three-way valve is connected to the other end of the water outlet pipe, the other end of the three-way valve is connected to the safety pressure relief valve, and the water outlet end of the constant temperature water tank is connected to the hot water outlet on the shell through a water pipe.

9. The gas water heater for RV according to claim 6, characterized in that: It also includes a smoke exhaust component arranged in the shell, and the smoke exhaust component includes a smoke exhaust hood arranged above the heat exchanger, a smoke exhaust pipe connected to the smoke exhaust port on the shell, and a fan respectively connected to the smoke exhaust hood and the smoke exhaust pipe.

10. The gas water heater for RV according to claim 7, characterized in that: The shell comprises an outer shell and a front panel detachably connected to the front end of the outer shell. A bracket close to the front panel is also provided in the shell. An electric control box is installed on the bracket. The main control board is arranged in the electric control box.

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