Water heater without coil pipe

Abstract

The utility model discloses a water heater without a coil pipe, which is characterized by comprising a water heater main body, a direct current fan, a water tank without a coil pipe, a combustion chamber, a combustor assembly, a gas proportional valve and a water valve, and the direct current fan, the water tank without the coil pipe, the combustion chamber, the combustor assembly, the gas proportional valve and the water valve are arranged in the water heater main body. The direct-current fan is arranged above the water tank without the coil pipe and the combustion chamber and adopts an up-pumping negative pressure structure, the gas proportional valve is assembled and connected with the combustor, and the water valve is arranged at the input end of the water tank without the coil pipe; the combustion chamber comprises a combustion chamber front cover assembly, a combustion chamber left cover assembly, a combustion chamber right cover assembly, a combustion chamber bottom plate and a combustion chamber rear cover assembly which are combined and installed into a whole, and the combustor assembly is arranged in the combustion chamber. The combustion chamber is good in stability, the surface temperature of the combustion chamber is reduced, the efficiency of the whole machine is further improved, high-power operation is guaranteed, and meanwhile high safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, and more specifically to a coil-free water heater. Background Art

[0002] At present, there are many coilless water heaters on the market, most of which adopt a double-layer combustion chamber cavity, and the temperature of the combustion chamber wall is high, which affects the heat exchange efficiency; the existing coilless gas water heaters are mostly blast structures with fans under the main structure, the fans are set at the bottom of the combustion chamber, and the heat exchangers are set at the upper part of the combustion chamber, and their manufacturing process and cost are relatively high. In this structure, the main body above the fan is evenly positively pressurized, and there is a possibility of smoke leakage in the case of poor sealing. The main structure needs to be sealed. In order to prevent smoke leakage, the machining accuracy of parts is required to be high. Although there are also some top-drawn coilless water heaters, their process cost is relatively simple, but they still have insufficient heat exchange efficiency, too high combustion chamber surface temperature, and cannot achieve greater load and higher power. At present, as the cost of raw materials is getting more and more expensive, the manufacturing cost of water tanks is getting higher and higher, especially for high-power gas water heaters, and there is a lack of high-cost-effective and high-power water heaters on the market. For example, the Chinese patent authorization announcement number is CN217383309U, which discloses a coilless complete zero-cold-water gas instantaneous water heater, which specifically relates to a gas instantaneous water heater with a coilless heat exchanger, an insulated combustion chamber, a constant temperature chamber, a water pump, a fan, a proportional valve, a check valve, and a main control component; the coilless heat exchanger is arranged at the top of the combustion chamber; the constant temperature chamber is arranged at the water outlet of the coilless heat exchanger, and the bottom of the constant temperature chamber is provided with a water outlet joint; the fan is arranged at the top of the coilless heat exchanger; the water pump is arranged at the water inlet end of the coilless heat exchanger, and is connected to the water inlet joint through a conversion pipe, and the water inlet pipe is connected to the coilless heat exchanger. This patent structure solves the problem of coil corrosion caused by water quality and structural problems in the existing coil heat exchanger through the combination of the coilless heat exchanger and the insulated combustion chamber. However, the disadvantages are that the structure is complex, the cost is high, and there are great risks in the efficiency, flue gas and service life of the whole machine. Therefore, it is necessary to further improve the existing technology. Summary of the invention

[0003] The purpose of the utility model is to solve the deficiencies of the prior art and to provide a coilless water heater which is stable and reliable, easy to disassemble and maintain, and has low overall cost, improves overall efficiency, ensures high-power operation and has high safety and reliability.

[0004] The utility model adopts the following technical solutions to achieve the above-mentioned purpose: a coilless water heater, characterized in that it includes a water heater body, a DC fan, a coilless water tank, a combustion chamber, a burner assembly, a gas proportional valve, and a water valve. The DC fan, the coilless water tank, the combustion chamber, the burner assembly, the gas proportional valve, and the water valve are arranged in the water heater body, the DC fan is arranged above the coilless water tank and the combustion chamber, and an upper suction negative pressure structure is adopted. The gas proportional valve is connected to the burner assembly, and the water valve is arranged at the input end of the coilless water tank; the combustion chamber includes a combustion chamber front cover assembly, a combustion chamber left cover assembly, a combustion chamber right cover assembly, a combustion chamber bottom plate, and a combustion chamber rear cover assembly that are assembled and installed as one, and the burner assembly is arranged in the combustion chamber.

[0005] As a further illustration of the above solution, the DC fan is provided with a smoke collecting hood, and the smoke collecting hood is connected to a smoke exhaust duct to discharge the smoke outside the water heater.

[0006] Furthermore, the smoke hood is fixed on the top of the combustion chamber, the smoke hood is trumpet-shaped as a whole, the DC fan is located at the narrow end of the smoke hood, and the smoke exhaust duct is arranged on the outside of the DC fan.

[0007] Furthermore, the combustion chamber front cover assembly includes a combustion chamber front cover plate and a front insulation plate; the combustion chamber left cover assembly includes a combustion chamber left cover plate and a left insulation plate; the combustion chamber right cover assembly includes a combustion chamber right cover plate and a right insulation plate; the combustion chamber rear cover assembly includes a combustion chamber rear cover plate and a rear insulation plate, and an insulation layer is arranged at the bottom of the combustion chamber.

[0008] Furthermore, the burner assembly adopts a V-shaped fire bar burner with 12-15 fire bars.

[0009] Furthermore, the water heater body is provided with a main controller, and the main controller is connected to control the gas proportional valve and the water valve.

[0010] Furthermore, the coilless water tank includes a left baffle, a right baffle, a heat exchange tube and a plurality of heat exchange fins. The heat exchange tube is bent, extended and fixed between the left baffle and the right baffle, and the plurality of fins are sleeved outside the heat exchange tube.

[0011] The beneficial effects that can be achieved by the utility model using the above technical solution are:

[0012] The utility model adopts a water heater structure composed of a main water heater body, a DC fan, a coil-free water tank, a combustion chamber, a burner assembly, a gas proportional valve, and a water valve. It adopts a European-style wall-mounted boiler disassembly and assembly structure, with a power of up to 60kW, a simple structure, easy disassembly and assembly, and low overall machine cost. The new upper-drawn main body structure it adopts not only reduces the surface temperature of the combustion chamber, but also further improves the efficiency of the overall machine, ensuring high-power operation while having high safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the exploded structure of the utility model.

[0015] Figure 3 Schematic diagram of the burner assembly structure.

[0016] Figure 4 This is a schematic diagram of the structure of a water tank without coils.

[0017] Explanation of the accompanying drawings: 1. water heater body 2. DC fan 2-1. smoke hood 2-2. smoke exhaust duct 3. coilless water tank 3-1. left baffle 3-2. right baffle 3-3. heat exchange tube 3-4. heat exchange fin 4. combustion chamber 4-1. combustion chamber front cover assembly 4-11. combustion chamber front cover plate 4-12. front insulation plate 4-2. combustion chamber left cover assembly 4-21. combustion chamber left cover plate 4-22. left insulation plate 4-3. combustion chamber right cover assembly 4-31. combustion chamber right cover plate 4-32. right insulation plate 4-4. combustion chamber bottom plate 4-5. combustion chamber rear cover assembly 4-51. combustion chamber rear cover plate 4-52. rear insulation plate 5. burner assembly 6. gas proportional valve 7. water valve 8. square pipe assembly 9. main controller. DETAILED DESCRIPTION

[0018] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating 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, and cannot be understood as limiting the specific protection scope of the present invention.

[0019] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, "at least" means one or more, unless otherwise clearly and specifically defined.

[0020] In the present invention, unless otherwise specified and limited, the terms "assembly", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can also be a mechanical connection; it can be directly connected, or it can be connected through an intermediate medium, or the two elements can be internally connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the utility model, unless otherwise specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "below" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the height of the second feature. A first feature being "above", "below" and "below" a second feature includes that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than the second feature.

[0022] The following is a further description of the specific implementation of the utility model in conjunction with the drawings of the specification, so that the technical solution and its beneficial effects of the utility model are clearer and more explicit. The following description of the embodiments with reference to the drawings is exemplary and intended to explain the utility model, and cannot be understood as limiting the utility model.

[0023] like Figure 1-Figure 4 As shown, the utility model is a coilless water heater, comprising a water heater body 1, a DC fan 2, a coilless water tank 3, a combustion chamber 4, a burner assembly 5, a gas proportional valve 6, a water valve 7, and a square tube assembly 8. The DC fan 2, the coilless water tank 3, the combustion chamber 4, the burner assembly 5, the gas proportional valve 6, the water valve 7, and the square tube assembly 8 are arranged in the water heater body 1, the DC fan 2 is arranged above the coilless water tank 3 and the combustion chamber 4, and an upward suction negative pressure structure is adopted. The gas proportional valve 6 is connected to the burner assembly 5, and the water valve 7 is arranged at the input end of the coilless water tank 3; the combustion chamber 4 comprises a combustion chamber front cover assembly 4-1, a combustion chamber left cover assembly 4-2, a combustion chamber right cover assembly 4-3, a combustion chamber bottom plate 4-4 and a combustion chamber rear cover assembly 4-5 which are assembled and installed as one, and the burner assembly 5 is arranged in the combustion chamber 4. The DC fan 2 is provided with a smoke hood 2-1, and the smoke hood 2-1 is connected to a smoke exhaust pipe 2-2 to exhaust smoke outside the water heater. The smoke hood 2-1 is fixed on the top of the combustion chamber 4, and the smoke hood is trumpet-shaped as a whole. The DC fan 2 is located at the narrow end of the smoke hood 2-1, and the smoke exhaust pipe is arranged outside the DC fan. The water heater body is provided with a main controller 9, and the main controller 9 is connected to control the gas proportional valve and the water valve.

[0024] The DC fan 2, combustion chamber 4, burner assembly 5, and square tube assembly 8 are the same as the existing European wall-mounted boiler structures and can be directly used. The coilless water tank 3 includes a left baffle 3-1, a right baffle 3-2, a heat exchange tube 3-3, and a plurality of heat exchange fins 3-4. The heat exchange tube 3-3 is bent and extended and fixed between the left baffle 3-1 and the right baffle 3-2. The plurality of sleeves are arranged outside the heat exchange tube 3-3. The heat is exchanged with the heat exchange fins 3-4 through the heat exchange tube 3-3, and the heat exchange efficiency is high. The gas proportional valve 6, the main controller 9, and the water valve 7 are the same as the existing water heaters and have high versatility. The burner assembly can be configured with different numbers of fire rows according to different loads, such as 12 fire rows can achieve 48kW, and 15 fire rows can achieve 60kW power hot water output. The technical solution only needs to update the number of fire rows to realize the development of products with different liters. The development has a high universality rate, low development cost, high cost performance of the whole machine, and stable performance.

[0025] The combustion chamber front cover assembly 4-1 includes a combustion chamber front cover plate 4-11 and a front insulation plate 4-12; the combustion chamber left cover assembly 4-2 includes a combustion chamber left cover plate 4-21 and a left insulation plate 4-22; the combustion chamber right cover assembly 4-3 includes a combustion chamber right cover plate 4-31 and a right insulation plate 4-32; the combustion chamber rear cover assembly 4-5 includes a combustion chamber rear cover plate 4-51 and a rear insulation plate 4-52, and the combustion chamber bottom plate is provided with a heat insulation layer. The insulation plate is an aluminum silicate fiberboard, and the combustion chamber right cover plate, the combustion chamber left cover plate, and the combustion chamber rear cover plate are all provided with a heat insulation layer.

[0026] Compared with the prior art, the utility model can be seen from the above structure that the fan, water tank, burner, etc. are easy to disassemble and assemble, which is extremely convenient for both production and assembly and after-sales maintenance, further reducing the production and manufacturing and after-sales maintenance costs. The DC fan is an upward suction negative pressure combustion system. Compared with the strong drum positive pressure combustion system, it has the advantages of stable combustion and non-resonance, and its manufacturing cost is low. The reliability and durability of the whole machine can even reach the level of a wall-mounted boiler. The coil-free water heater of this technical solution has a reasonable internal structure layout, which can realize a high-load and large liter product layout of 24 to 30L, and fully utilize the functions of each part. Its structure is highly universal, the manufacturing cost is low, and the whole machine has a high cost performance.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A coilless water heater, characterized in that: It includes a water heater body, a DC fan, a coil-free water tank, a combustion chamber, a burner assembly, a gas proportional valve, and a water valve. The DC fan, coil-free water tank, combustion chamber, burner assembly, gas proportional valve, and water valve are arranged in the water heater body, the DC fan is arranged above the coil-free water tank and the combustion chamber, and an upward suction negative pressure structure is adopted. The gas proportional valve is connected to the burner assembly, and the water valve is arranged at the input end of the coil-free water tank; the combustion chamber includes a combustion chamber front cover assembly, a combustion chamber left cover assembly, a combustion chamber right cover assembly, a combustion chamber bottom plate, and a combustion chamber rear cover assembly which are assembled and installed as one, and the burner assembly is arranged in the combustion chamber.

2. A coilless water heater according to claim 1, characterized in that: The DC fan is provided with a smoke collecting hood, and the smoke collecting hood is connected to a smoke exhaust pipe to exhaust the smoke outside the water heater.

3. A coilless water heater according to claim 2, characterized in that: The smoke collecting hood is fixed on the top of the combustion chamber, and the smoke collecting hood is trumpet-shaped as a whole. The DC fan is located at the narrow end of the smoke collecting hood, and the smoke exhaust duct is arranged on the outside of the DC fan.

4. The coilless water heater according to claim 1, characterized in that: The combustion chamber front cover assembly includes a combustion chamber front cover plate and a front insulation plate; the combustion chamber left cover assembly includes a combustion chamber left cover plate and a left insulation plate; the combustion chamber right cover assembly includes a combustion chamber right cover plate and a right insulation plate; the combustion chamber rear cover assembly includes a combustion chamber rear cover plate and a rear insulation plate, and an insulation layer is arranged at the bottom of the combustion chamber.

5. The coilless water heater according to claim 1, characterized in that: The burner assembly adopts a V-shaped fire row burner with 12-15 fire rows.

6. The coilless water heater according to claim 1, characterized in that: The water heater body is provided with a main controller, which is connected to control the gas proportional valve and the water valve.

7. The coilless water heater according to claim 1, characterized in that: The coil-free water tank comprises a left baffle, a right baffle, a heat exchange tube and a plurality of heat exchange fins. The heat exchange tube is bent, extended and fixed between the left baffle and the right baffle, and the plurality of fins are sleeved outside the heat exchange tube.

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