A fuel-fired water heater

Abstract

The utility model discloses a fuel oil water heater belongs to water heater technical field, through the first retraction pipe and the second retraction pipe of the spiral pipe structure in the exhaust pipe, has prolonged the flow path of exhaust hot gas, has increased the heat exchange time with the heat conduction medium in the pipe, and the heat recovery in waste gas provides the scene such as hot water and meal heat preservation like family dining, small-scale catering service, both energy saving and environmental protection and have promoted user experience, improve the overall practicality of device, and the overall energy consumption. The fuel oil water heater includes hot water cylinder body, and the heating cavity is seted up in hot water cylinder body inside, and the fuel oil heater is installed to hot water cylinder body near bottom department, and the oil inlet pipe is installed to the oil inlet end of fuel oil heater, and the gas outlet cylinder is seted up at hot water cylinder body top department, and the exhaust pipe of auxiliary exhaust is installed on the gas outlet cylinder, and the recovery device of auxiliary heat recovery is installed in the exhaust pipe, and the duct is installed at hot water cylinder body top department, and the duct bottom stretches into the heating cavity of hot water cylinder body.

Description

Technical Field

[0001] This utility model belongs to the field of water heater technology, specifically relating to a fuel-fired water heater. Background Technology

[0002] An oil-fired water heater is a hot water supply device that uses diesel or kerosene as fuel. It mainly consists of a burner, heat exchanger, water tank, and control system. Its working principle is that the burner atomizes the fuel oil and ignites it; the heat generated is transferred to the water flowing through the pipes via the heat exchanger, thus heating the cold water. These water heaters are usually equipped with automatic ignition devices and temperature control systems, allowing for adjustment of the outlet water temperature as needed. Because they use liquid fuel, oil-fired water heaters are particularly suitable for areas without natural gas supply. They are often used in kitchens.

[0003] Existing oil-fired water heaters typically only provide hot water, and the high-temperature exhaust gases generated during operation are directly released into the environment, resulting in significant energy waste. These devices suffer from the following design problems: First, the waste heat from the exhaust gases is not effectively recovered and utilized, leading to low overall energy efficiency, which contradicts the trend of energy conservation and environmental protection. Second, if users need to keep food warm, they must install dedicated insulation equipment, increasing costs and space requirements while reducing ease of use. Therefore, an oil-fired water heater is needed to help solve this problem. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a fuel-fired water heater. This fuel-fired water heater uses a first and second recovery pipe with a spiral tubular structure inside the exhaust pipe to extend the flow path of the exhaust hot gas, increase the heat exchange time with the heat-conducting medium inside the pipe, and recover the heat from the exhaust gas to provide hot water and keep food warm in scenarios such as family meals and small catering services. This is both energy-saving and environmentally friendly, improves the user experience, enhances the overall practicality of the device, and reduces overall energy consumption.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a fuel-fired water heater, which includes a hot water tank body, a heating chamber inside the hot water tank body, a fuel-fired heater installed near the bottom of the hot water tank body, an oil inlet pipe installed at the oil inlet end of the fuel-fired heater, and an air outlet provided at the top of the hot water tank body.

[0008] An auxiliary exhaust pipe is installed on the exhaust cylinder, and an auxiliary heat recovery device is installed inside the exhaust pipe. A conduit is installed at the top of the hot water cylinder body, and the bottom of the conduit extends into the heating chamber of the hot water cylinder body.

[0009] Furthermore, the recycling device includes a first recycling tube and a second recycling tube, the first recycling tube and the second recycling tube having a spiral tube structure, both ends of the first recycling tube being equipped with connecting tubes, and both ends of the second recycling tube being equipped with conductive tubes, one end of the conductive tube being fixed to one side of the connecting tube.

[0010] Furthermore, the connecting pipe extends out of the exhaust pipe, and the outer side of the first retraction pipe is welded and fixed to the inner edge of the exhaust pipe by a support rod.

[0011] Furthermore, the first and second recovery tubes are provided with a through cavity, and a diverter block is protruding from the through cavity. The diverter block has a prismatic block structure.

[0012] Furthermore, a plurality of flow dividers are provided, and the plurality of flow dividers are staggered inside the conduction cavity.

[0013] Furthermore, an observation tube is installed on the side of the hot water cylinder body, with both ends of the observation tube extending into the heating chamber, and the observation tube is transparent and tubular.

[0014] Furthermore, the bottom of the hot water cylinder body is provided with protruding blocks, and four protruding blocks are symmetrically arranged. Anti-slip pads are embedded at the bottom of the protruding blocks.

[0015] Furthermore, an installation plate is fitted and fixed to the outer edge of the conduit, and the installation plate is fixed to the top of the hot water cylinder body by bolts.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model, through the setting of a recovery device, which has a first and second recovery pipe with a spiral tubular structure inside the exhaust pipe, extends the flow path of the exhaust hot gas, increases the heat exchange time with the heat-conducting medium inside the pipe, and recovers the heat in the exhaust gas to provide hot water and food warming scenarios such as family meals and small catering services. It is both energy-saving and environmentally friendly, improves the user experience, enhances the overall practicality of the device, and reduces overall energy consumption.

[0019] This invention uses a series of staggered protruding blocks, combined with staggered internal prismatic protruding blocks, to create turbulent flow in the fluid, thereby enhancing heat transfer efficiency and effectively recovering waste heat from exhaust gas. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a longitudinal sectional view of the exhaust pipe of this utility model;

[0023] Figure 3 This is a longitudinal sectional view of the first retraction tube of this utility model;

[0024] Figure 4 This utility model Figure 1 A magnified structural diagram of point A in the middle.

[0025] The labels in the attached diagram are as follows: 1. Hot water tank body; 2. Fuel heater; 3. Oil inlet pipe; 4. Observation pipe; 5. Guide pipe; 51. Mounting plate; 6. Gas outlet pipe; 7. Exhaust pipe; 8. Connecting pipe; 9. First return pipe; 10. Second return pipe; 11. Conductor pipe; 12. Diverter block; 13. Protruding block. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This specific embodiment is a fuel-fired water heater, such as... Figure 1-4 As shown, the fuel-fired water heater includes a hot water tank body 1, with a heating chamber inside the hot water tank body 1. A fuel heater 2 is installed near the bottom of the hot water tank body 1, and an oil inlet pipe 3 is installed at the oil inlet end of the fuel heater 2. A conduit 5 is installed at the top of the hot water tank body 1, with the bottom of the conduit 5 extending into the heating chamber of the hot water tank body 1. An installation plate 51 is fitted and fixed to the outer edge of the conduit 5, and the installation plate 51 is fixed to the top of the hot water tank body 1 by bolts. An observation tube 4 is installed on the side of the hot water tank body 1, with both ends of the observation tube 4 extending into the heating chamber. The observation tube 4 is a transparent tube.

[0028] The transparent observation tube 4 extends into the heating chamber at both ends, allowing for a direct display of water level changes. This helps users replenish water or adjust the operating status in a timely manner, effectively preventing the risk of dry burning due to low water level or overflow problems caused by high water level.

[0029] The hot water cylinder body 1 is provided with an air outlet 6 at the top. An auxiliary exhaust pipe 7 is installed on the air outlet 6. An auxiliary heat recovery device is installed inside the exhaust pipe 7. The recovery device includes a first recovery pipe 9 and a second recovery pipe 10. The first recovery pipe 9 and the second recovery pipe 10 are spiral tubes. Both ends of the first recovery pipe 9 are connected to a connecting pipe 8. Both ends of the second recovery pipe 10 are connected to a guide pipe 11. One end of the guide pipe 11 is fixed to one side of the connecting pipe 8. The connecting pipe 8 extends out of the exhaust pipe 7. The outer side of the first recovery pipe 9 is fixed to the inner edge of the exhaust pipe 7 by welding with a support rod.

[0030] By setting up a recovery device, the recovery device extends the flow path of the exhaust hot gas through the first recovery pipe 9 and the second recovery pipe 10, which have a spiral tubular structure inside the exhaust pipe 7. This increases the heat exchange time with the heat-conducting medium inside the pipe and recovers the heat from the exhaust gas to provide hot water and food warming in scenarios such as family meals and small catering services. This is both energy-saving and environmentally friendly, improves the user experience, enhances the overall practicality of the device, and reduces overall energy consumption.

[0031] The first retraction tube 9 and the second retraction tube 10 have a through cavity inside, and a protruding block 13 is provided in the through cavity. The protruding block 13 has a prismatic block structure, and there are several protruding blocks 13. The several protruding blocks 13 are arranged alternately inside the through cavity.

[0032] By using a number of staggered protrusions 13, combined with internally staggered prismatic protrusions 13, the fluid is made to form turbulence, which enhances the heat transfer efficiency and thus effectively recovers the waste heat in the exhaust.

[0033] Working principle:

[0034] The fuel heater 2 introduces fuel through the fuel inlet pipe 3 and ignites it. The heat generated heats the water in the heating chamber of the hot water tank body 1. The hot air generated during the heating process enters the exhaust pipe 7 through the exhaust pipe 6.

[0035] The heat recovery device inside the exhaust pipe 7 extends the hot gas flow path and increases the heat exchange time through the spiral tubular structure of the first recovery pipe 9 and the second recovery pipe 10. During the flow, the hot gas contacts the spiral pipe wall and transfers heat to the heat transfer medium such as heat transfer oil or circulating water flowing inside the pipe. In the conductive cavity inside the first recovery pipe 9 and the second recovery pipe 10, the staggered diamond-shaped diverting blocks 12 make the fluid form turbulence, further enhancing the heat transfer efficiency. The connecting pipe 8 and the conductive pipe 11 connect the two spiral pipes in series to form a continuous heat recovery channel.

[0036] The heat-conducting medium that absorbs heat is discharged from the outlet of the recovery device through the connecting pipe 8 and flows into the independently set heating pipe (not shown). The heating pipe surrounds or is embedded in the outside of the insulated container used to hold food, and provides auxiliary heat preservation for the food in the container through heat conduction. The conduit 5 is only used to replenish cold water into the heating chamber and discharge hot water. Its bottom extends into the heating chamber, and its top is fixed to the top of the hot water cylinder body 1 by the mounting plate 51. It is independent of the heat-conducting medium circulation path of the recovery device.

[0037] The observation tube 4 displays the water level in the heating chamber through a transparent tube, helping users monitor the water volume; the protruding block 13 at the bottom of the hot water tank body 1 works with the anti-slip pad to ensure the stability of the equipment.

[0038] All technical features in this embodiment can be freely combined according to actual needs.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fuel-fired water heater, comprising a hot water tank body (1), characterized in that, The hot water tank body (1) has a heating chamber inside. A fuel heater (2) is installed near the bottom of the hot water tank body (1). An oil inlet pipe (3) is installed at the oil inlet end of the fuel heater (2). An air outlet pipe (6) is provided at the top of the hot water tank body (1). An auxiliary exhaust pipe (7) is installed on the exhaust cylinder (6), and an auxiliary heat recovery device is installed inside the exhaust pipe (7). A conduit (5) is installed at the top of the hot water cylinder body (1), and the bottom of the conduit (5) extends into the heating chamber of the hot water cylinder body (1).

2. The oil-fired water heater according to claim 1, characterized in that, The recycling device includes a first recycling pipe (9) and a second recycling pipe (10). The first recycling pipe (9) and the second recycling pipe (10) are spiral tubes. Both ends of the first recycling pipe (9) are equipped with connecting pipes (8), and both ends of the second recycling pipe (10) are equipped with conductive pipes (11). One end of the conductive pipe (11) is fixed on one side of the connecting pipe (8).

3. A fuel-fired water heater according to claim 2, characterized in that, The connecting pipe (8) extends out of the exhaust pipe (7), and the outer side of the first retraction pipe (9) is welded and fixed to the inner edge of the exhaust pipe (7) by a support rod.

4. A fuel-fired water heater according to claim 3, characterized in that, The first recovery tube (9) and the second recovery tube (10) have a through cavity inside, and a diverter block (12) is protruding inside the through cavity. The diverter block (12) has a prismatic block structure.

5. A fuel-fired water heater according to claim 4, characterized in that, The flow divider (12) is provided in a plurality of manners, and the plurality of flow dividers (12) are arranged alternately inside the conduction cavity.

6. A fuel-fired water heater according to claim 1, characterized in that, An observation tube (4) is installed on the side of the hot water cylinder body (1). Both ends of the observation tube (4) extend into the heating chamber. The observation tube (4) is a transparent tube.

7. A fuel-fired water heater according to claim 1, characterized in that, The bottom of the hot water cylinder body (1) is provided with a protruding block (13), and four protruding blocks (13) are symmetrically arranged. An anti-slip pad is embedded at the bottom of the protruding block (13).

8. A fuel-fired water heater according to claim 1, characterized in that, An installation plate (51) is fitted and fixed at the outer edge of the conduit (5), and the installation plate (51) is fixed at the top of the hot water cylinder body (1) by bolts.

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