Heat exchange assembly of gas water heater

Abstract

The utility model provides a heat exchange assembly of a gas water heater, and particularly relates to the technical field of gas water heaters. The heat exchange assembly comprises a heat exchanger, a combustor, a water inlet pipe and a water outlet pipe. The heat exchanger comprises a hollow quadrangular frustum pyramid shell with a downward opening. The combustor is arranged in the cavity of the heat exchanger shell; heat exchange fins are arranged on the top of the shell, and heat exchange pipes are arranged in the heat exchange fins in a penetrating mode. A preheating pipe is wound on the surface of the shell, one end of the preheating pipe is connected with a water inlet pipe, the other end of the preheating pipe is connected with one end of a heat exchange pipe, and the other end of the heat exchange pipe is connected with a water outlet pipe. Compared with a traditional heat exchange assembly, the heat exchanger adopts a hollow quadrangular frustum pyramid structure and is combined with a trapezoidal combustor structure matched with the hollow quadrangular frustum pyramid structure in shape, so that the flame generation area is increased, and the problems that a traditional fire grate is high in density, a large amount of nitric oxide and dust are generated due to overhigh local temperature during combustion, the combustor is easy to block, and the combustion efficiency is low are solved. And the heat exchange efficiency is further influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas water heaters, in particular to a heat exchange component of a gas water heater. Background Art

[0002] Gas water heaters, also known as gas water heaters, are gas appliances that use gas as fuel and transfer heat to cold water flowing through a heat exchange device through combustion and heating to achieve the purpose of preparing hot water. With the improvement of living standards, people's demand for gas water heaters and their requirements for user experience are gradually increasing.

[0003] The burner of the existing gas water heater includes a main burner shell and a fire grate arranged in the burner shell, and the fire grate burns the gas to form a flame. However, due to the compact structure of the traditional burner, the density of the burner fire grate in the same plane is relatively large, and the local temperature is too high during combustion, which will produce a large amount of nitrogen oxides. Nitrogen oxides and dust are easy to clog the burner, thereby affecting the effect of heat exchange. Utility Model Content

[0004] In order to overcome the above-mentioned deficiencies of the prior art, solve the problem that the traditional burner structure is relatively compact, the density of the burner fire row in the same plane is relatively large, and the local temperature is too high during combustion to produce a large amount of nitrogen oxides, and the nitrogen oxides and dust are easy to block the burner, thereby affecting the heat exchange effect. The utility model provides a heat exchange component for a gas water heater, and the specific technical solution is as follows:

[0005] A heat exchange component of a gas water heater comprises a heat exchanger, a burner, a water inlet pipe and a water outlet pipe, wherein the heat exchanger comprises a hollow quadrangular pyramid shell with an opening facing downward; the burner is arranged in the cavity of the heat exchanger shell; heat exchange fins are arranged on the top of the shell, and heat exchange tubes are passed through the heat exchange fins; a preheating tube is coiled on the surface of the shell, one end of the preheating tube is connected to the water inlet pipe, and the other end is connected to one end of the heat exchange tube, and the other end of the heat exchange tube is connected to the water outlet pipe.

[0006] Preferably, the burner comprises a plurality of fire bar assemblies arranged at intervals; a mounting plate is provided at the bottom of each of the fire bar assemblies; and the fire bar assemblies are connected via the mounting plates.

[0007] Preferably, the fire bar assembly is in a trapezoidal structure, and both side edges and the top edge of the fire bar assembly are provided with fire hole areas.

[0008] Preferably, two groups of centrally symmetrical gas injection cavities are provided on the bottom side of the fire bar assembly.

[0009] Also preferably, the cavity openings of the gas injection cavities are arranged relative to each other.

[0010] Also preferably, the shape of the burner is adapted to the shape of the inner cavity of the housing.

[0011] Further preferably, the water outlet pipe is provided with a temperature control component.

[0012] Still further preferably, the housing is made of stainless steel.

[0013] More preferably, the preheating tube and the heat exchange tube are both made of metallic copper material.

[0014] The beneficial effects of the utility model are:

[0015] Compared with existing heat exchange components, the heat exchanger of the utility model adopts a hollow quadrangular pyramid structure, combined with a trapezoidal burner structure that matches its shape, and the fire hole areas on both sides of the burner are inclinedly distributed, reducing the lateral distance of traditional fire grates; moreover, the burner penetrates deep into the heat exchanger, and the side fire grates are close to the inner surface of the heat exchanger, which increases the flame generation area while solving the problem that the traditional fire grates have a high density and the local temperature is too high during combustion, which will produce a large amount of nitrogen oxides and dust, easily clogging the burner and thus affecting the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting the specification of this application are used to provide further understanding of this application and do not constitute improper limitations on this application.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the heat exchanger part in the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the fire grate assembly in the burner of the utility model;

[0021] In the figure, 1-heat exchanger; 11-housing; 12-heat exchange fins; 13-water inlet pipe; 14-preheating pipe; 15-heat exchange pipe; 16-water outlet pipe; 2-burner; 21-mounting plate; 22-fire grate assembly; 221-fire hole area; 23-gas injection cavity. DETAILED DESCRIPTION

[0022] The specific implementation of a heat exchange component of a gas water heater provided by the utility model is further described in conjunction with the drawings and embodiments.

[0023] like Figure 1-3As shown, a heat exchange component of a gas water heater includes a heat exchanger 1, a burner 2, a water inlet pipe 13 and a water outlet pipe 16. The heat exchanger 1 includes a hollow quadrangular pyramid shell 11 with an opening facing downward; the burner 2 is arranged in the cavity of the shell 11 of the heat exchanger 1.

[0024] Preferably, a heat exchange fin 12 is provided on the top of the shell 11 of the heat exchanger 1, and a heat exchange tube 15 is inserted into the heat exchange fin 12; a preheating tube 14 is coiled on the surface of the shell 11; wherein one end of the preheating tube 14 is connected to the water inlet pipe 13, and the other end is connected to one end of the heat exchange tube 15, and the other end of the heat exchange tube 15 is connected to the water outlet pipe 16. Cold water enters the heat exchanger through the water inlet pipe 13, passes through the preheating tube 14 and the heat exchange tube 15 in the heat exchange fin 12 in sequence, and is finally discharged from the water outlet pipe 16 in the form of hot water, thereby achieving the purpose of heat exchange.

[0025] like Figure 4 As shown, the burner 2 includes a plurality of fire bar assemblies 22 arranged at intervals; a mounting plate 21 is provided at the bottom of each fire bar assembly 22; and the plurality of fire bar assemblies 22 are connected by the mounting plate 21.

[0026] Preferably, the fire bar assembly 22 is a trapezoidal structure, and both side edges and the top edge of the fire bar assembly 22 are provided with fire hole areas 221; the bottom edge of the fire bar assembly 22 is provided with two groups of centrally symmetrical gas injection cavities 23, and the cavity openings of the gas injection cavities 23 are relatively arranged.

[0027] It is worth noting that the inclined design of the fire hole area 221 on both sides of the burner 2 in the utility model can reduce the problem of high lateral density of traditional fire grates, excessive local temperature during combustion, which will produce a large amount of nitrogen oxides and dust and easily clog the burner.

[0028] In addition, the shape of the burner 2 is adapted to the inner shape of the shell 11 of the heat exchanger 1, and at the same time, the side fire hole area 221 of the burner 2 is separated from the inner surface of the shell 11 of the heat exchanger 1 by a distance, which can effectively avoid local overheating and achieve better heat exchange effect.

[0029] Further preferably, a temperature control component is provided on the water outlet pipe 16 to achieve precise temperature control and enhance user experience.

[0030] More preferably, the shell 11 is made of stainless steel; the preheating tube 14 and the heat exchange tube 15 are both made of copper metal with good thermal conductivity.

[0031] Compared with existing heat exchange components, the heat exchanger of the utility model adopts a hollow quadrangular pyramid structure, combined with a trapezoidal burner structure that matches its shape, and the fire hole areas on both sides of the burner are inclinedly distributed, which effectively increases the number of fire holes and distributes them in multiple directions, better meeting the heat exchange effect; and the burner goes deep into the heat exchanger, and the side fire hole areas are close to the inner surface of the heat exchanger, which increases the flame generation area while solving the problem that due to the high density of traditional fire rows, the local temperature is too high during combustion, which will produce a large amount of nitrogen oxides and dust, easily clogging the burner, and thus affecting the heat exchange efficiency.

[0032] In the present utility model, the directions or positional relationships indicated by terms such as "upper", "lower", "bottom", "top", etc. are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or components of the present utility model. They do not specifically refer to the parts or components of the present utility model and cannot be understood as limitations on the present utility model. Terms such as "connected" and "connected" should be understood in a broad sense, indicating that they can be fixedly connected, integrally connected, or detachably connected; they can be directly connected or indirectly connected through an intermediate medium. For relevant scientific research or technical personnel in this field, the specific meanings of the above terms in the present utility model can be determined according to specific circumstances, and they cannot be understood as limitations on the present utility model.

[0033] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the protection scope of the present invention.

Claims

1. A heat exchange component of a gas water heater, comprising a heat exchanger, a burner, a water inlet pipe and a water outlet pipe, characterized in that: The heat exchanger comprises a hollow quadrangular pyramid shell with an opening facing downward; the burner is arranged in the cavity of the heat exchanger shell; heat exchange fins are arranged on the top of the shell, and heat exchange tubes are passed through the heat exchange fins; a preheating tube is coiled on the surface of the shell, one end of the preheating tube is connected to the water inlet pipe, and the other end is connected to one end of the heat exchange tube, and the other end of the heat exchange tube is connected to the water outlet pipe.

2. The heat exchange assembly of the gas water heater according to claim 1, characterized in that: The burner comprises a plurality of fire bar assemblies arranged at intervals; a mounting plate is arranged at the bottom of each of the fire bar assemblies; and the fire bar assemblies are connected by the mounting plates.

3. The heat exchange assembly of the gas water heater according to claim 2, characterized in that: The fire bar assembly is in a trapezoidal structure, and both side edges and the top edge of the fire bar assembly are provided with fire hole areas.

4. The heat exchange assembly of the gas water heater according to claim 3, characterized in that: The bottom side of the fire bar assembly is provided with two groups of centrally symmetrical gas injection cavities.

5. The heat exchange assembly of the gas water heater according to claim 4, characterized in that: The cavity openings of the gas injection cavity are arranged opposite to each other.

6. The heat exchange assembly of the gas water heater according to claim 2, characterized in that: The shape of the burner is adapted to the shape of the inner cavity of the shell.

7. The heat exchange assembly of the gas water heater according to claim 1, characterized in that: The water outlet pipe is provided with a temperature control component.

8. The heat exchange assembly of the gas water heater according to claim 1, characterized in that: The shell is made of stainless steel.

9. The heat exchange assembly of the gas water heater according to claim 1, characterized in that: The preheating tube and the heat exchange tube are both made of metal copper material.

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