Gas water heater with novel structure

Abstract

The utility model relates to the technical field of gas water heaters, in particular to a gas water heater with a novel structure, which comprises a shell, a combustion chamber is arranged in the shell, a heat exchanger is arranged above the combustion chamber, a water inlet pipe is communicated with a water inlet end of the heat exchanger, and a water outlet pipe is communicated with a water outlet end of the heat exchanger. A water inlet connector and a water outlet connector are arranged on the lower portion of the shell, the end, away from the heat exchanger, of the water inlet pipe extends downwards and is communicated with the water inlet connector, the end, away from the heat exchanger, of the water outlet pipe extends downwards and is communicated with the water outlet connector, and gaps are reserved between the water inlet pipe and the outer wall of the combustion chamber and between the water outlet pipe and the outer wall of the combustion chamber. According to the utility model, the problem that corrosion perforation is easy to occur near a welding spot between the coil pipe of the heat exchanger and the combustion chamber can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas water heater technical field, concretely relates to a new structure's gas water heater. BACKGROUND

[0002] The gas fast water heater provides the hot water needed for our life quickly, and has become the indispensable kitchen life electric appliance of modern family. At present, most of the gas water heaters on the market adopt the oxygen-free copper heat exchanger with welded coil pipe, but the heat exchanger with welded coil pipe is easy to cause condensed water to enter the inside of the machine through the coil pipe welding point, corrode the parts, and cause the risk of water leakage.

[0003] The lower part of the coil pipe oxygen-free copper heat exchanger is the combustion chamber, the coil pipe is surrounded outside the combustion chamber, the coil pipe is fixed with the combustion chamber through the welding process, and the welding position of the coil pipe and the combustion chamber is more prone to condensed water accumulation. The accumulation of condensed water will cause the welding point to be gradually corroded during use, and even cause water leakage. On the other hand, the combustion chamber is also made of oxygen-free copper. During the working process of the water heater, a certain amount of condensed water will be generated, which will adhere to the inner wall of the combustion chamber, causing corrosion. Long-term accumulation may cause the copper wall of the combustion chamber to be corroded and even cause the flame to overflow, causing the risk of fire, and also causing the combustion condition of the gas water heater to deteriorate. In fact, according to the corrosion phenomenon of most heat exchangers fed back by the market at present, the main corrosion parts are mostly near the coil pipe and the lower part of the heat exchanger.

[0004] In addition, the combustion chamber itself is made of oxygen-free copper, and the body temperature of the combustion chamber is relatively high during work, which can shorten the service life of the combustion chamber itself and other parts inside the gas water heater. INVENTION CONTENTS

[0005] The utility model aims at providing a new structure's gas water heater, which aims at improving the problem that the welding point between the coil pipe and the combustion chamber of the gas water heater in the prior art is prone to corrosion and perforation.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A new structure's gas water heater, comprising a shell, a combustion chamber is arranged inside the shell, a heat exchanger is arranged above the combustion chamber, a water inlet pipe is communicated with the water inlet end of the heat exchanger, and a water outlet pipe is communicated with the water outlet end of the heat exchanger, a water inlet joint and a water outlet joint are arranged at the lower part of the shell, the water inlet pipe extends downward at the end away from the heat exchanger and is communicated with the water inlet joint, the water outlet pipe extends downward at the end away from the heat exchanger and is communicated with the water outlet joint, and the water inlet pipe and the water outlet pipe are both spaced apart from the outer wall of the combustion chamber.

[0008] Further, the combustion chamber adopts stainless steel material.

[0009] Further, the combustion chamber adopts aluminized plate material.

[0010] Further, the combustion chamber is provided with an exhaust fan at the open end, the exhaust fan is located above the heat exchanger, the air inlet of the exhaust fan is connected with the upper end of the combustion chamber, and the air outlet extends to the upper of the shell, each side wall of the combustion chamber is internally provided with a cavity, the outer side wall of each cavity is provided with an air inlet, and the inner side wall is provided with an air outlet.

[0011] Further, the combustion chamber is provided with an exhaust fan at the open end, the exhaust fan is located above the heat exchanger, the air inlet of the exhaust fan is connected with the upper end of the combustion chamber, and the air outlet extends to the upper of the shell, each side wall of the combustion chamber is internally provided with a cavity, the outer side wall of each cavity is provided with an air inlet, and the inner side wall is provided with an air outlet.

[0012] Further, the combustion chamber is provided with an exhaust fan at the open end, the exhaust fan is located above the heat exchanger, the air inlet of the exhaust fan is connected with the upper end of the combustion chamber, and the air outlet extends to the upper of the shell, each side wall of the combustion chamber is internally provided with a cavity, the outer side wall of each cavity is provided with an air inlet, and the inner side wall is provided with an air outlet.

[0013] Compared with the prior art, the beneficial effects of the present application are:

[0014] In the present application, the water inlet pipe and the water outlet pipe of the heat exchanger are not in the conventional coil structure, and the water inlet pipe and the water outlet pipe are directly connected with the corresponding connector, thereby reducing the welding points between the water inlet pipe and the water outlet pipe and the combustion chamber, reducing the problem of corrosion and perforation caused by the accumulation of condensed water near the welding points, and prolonging the effective service life of the gas water heater and reducing the failure rate. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application, in the drawings:

[0016] Figure 1 is a partial structure diagram of the present application;

[0017] Figure 2 is an explosion diagram of the combustion chamber of the present application;

[0018] Figure 3 is a sectional view of the combustion chamber of the present application from one perspective;

[0019] Figure 4Another perspective view of the combustion chamber of the utility model.

[0020] Markings in the drawings and corresponding component names:

[0021] 1, shell; 2, combustion chamber; 3, heat exchanger; 4, water inlet pipe; 5, water outlet pipe; 6, water inlet joint; 7, water outlet joint; 8, exhaust fan; 9, air inlet; 10, air outlet; 11, water flow sensor; 12, main controller; 13, single-layer cavity; 14, first cavity; 15, second cavity; 16, communication hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] A new structure of gas water heater, refer to Figure 1 , including shell 1, shell 1 inside is provided with combustion chamber 2, combustion chamber 2 top is provided with heat exchanger 3, the water inlet end of heat exchanger 3 is provided with water inlet pipe 4, the water outlet end is provided with water outlet pipe 5, shell 1 lower part is provided with water inlet joint 6 and water outlet joint 7, water inlet pipe 4 is extended downward and is communicated with water inlet joint 6 away from heat exchanger 3 one end, water outlet pipe 5 is extended downward and is communicated with water outlet joint 7 away from heat exchanger 3 one end, and water inlet pipe 4 and water outlet pipe 5 are spaced apart from the outer wall of combustion chamber 2.

[0025] In the scheme, the water inlet pipe 4 and the water outlet pipe 5 of the heat exchanger 3 are not in the conventional coil structure, and the water inlet pipe 4 and the water outlet pipe 5 are directly connected to the corresponding joints, reducing the welding points between the water inlet pipe 4 and the water outlet pipe 5 and the combustion chamber 2, reducing the problem of corrosion and perforation near the welding points due to the accumulation of condensed water, which is conducive to prolonging the effective service life of the gas water heater and reducing its failure rate.

[0026] Embodiment 2

[0027] Based on embodiment 1, in the embodiment, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4The exhaust fan 8 is arranged at the upper opening end of the combustion chamber 2, is located above the heat exchanger 3, and has an air inlet that is in butt joint with the upper end of the combustion chamber 2 and an air outlet that extends above the shell 1. Each side wall of the combustion chamber 2 is internally provided with a cavity, and each cavity has an air inlet 9 formed in the outer side wall and an air outlet 10 formed in the inner side wall.

[0028] In the present scheme, the water inlet joint 6 is provided with a water flow sensor 11, and the shell 1 is further provided with a main controller 12. The water flow sensor 11 and the exhaust fan 8 are electrically connected to the main controller 12. When the user opens the hot water faucet, cold water flows into the water inlet joint 6 and passes through the water flow sensor 11. When the flow reaches the starting flow, the main controller 12 supplies power to the exhaust fan 8, and the exhaust fan 8 rotates to clean the front side and provide oxygen required for combustion in the combustion chamber 2. After receiving the normal rotation signal of the exhaust fan 8, the main controller 12 provides high-voltage electricity to the ignition device to discharge, and simultaneously opens the gas proportional valve to supply gas. The gas is ignited by the electric spark and burns. The high-temperature flue gas after combustion heats the cold water through the heat exchanger 3. Hot water flows out of the water outlet pipe 5 and the water outlet joint 7. The waste flue gas after combustion is discharged to the outside of the shell 1 through the air outlet of the exhaust fan 8.

[0029] When the exhaust fan 8 is started, the air in the combustion chamber 2 is extracted, so that a negative pressure is formed in the combustion chamber 2. The cold air outside the combustion chamber 2 enters the corresponding cavity through the air inlet 9 of each cavity. The cold air can take away the heat of the inner side wall of the combustion chamber 2 when flowing in the cavity, so as to reduce the temperature of the side wall of the combustion chamber 2 and prolong the service life of the combustion chamber 2 and other surrounding parts. The cold air enters the combustion chamber 2 through the air outlet 10 of the cavity to provide oxygen required for combustion of the burner.

[0030] Further, the combustion chamber 2 is made of stainless steel or aluminum-plated plate material, which has better corrosion resistance than copper material, can prolong the service life of the combustion chamber 2, and has more advantages in cost.

[0031] Embodiment 3

[0032] In the present embodiment, the above-mentioned Figure 1 , Figure 2 , Figure 3 and Figure 4The two side walls with smaller area of the combustion chamber 2 are internally provided with single-layer cavities 13, the middle part of the outer side wall of the single-layer cavity 13 is provided with a plurality of air inlets 9, and the upper part and the lower part of the inner side wall are both provided with a plurality of air outlets 10. The two side walls with larger area of the combustion chamber 2 are internally provided with a first cavity 14 and a second cavity 15, the first cavity 14 is located on the side of the second cavity 15 away from the inside of the combustion chamber 2, the upper part and the lower part of the outer side wall of the first cavity 14 are both provided with a plurality of air inlets 9, the middle part of the inner side wall of the first cavity 14 is provided with a plurality of communication holes 16, the first cavity 14 is communicated with the second cavity 15 through the plurality of communication holes 16, and the upper part and the lower part of the inner side wall of the second cavity 15 are both provided with a plurality of air outlets 10.

[0033] In the scheme, the temperature of the side wall with larger area of the combustion chamber 2 is higher, so that the number of the air inlets 9 provided on the side wall with larger area of the combustion chamber 2 is more, so as to provide more cold air for the inside of the corresponding side wall of the combustion chamber 2, and facilitate to ensure the cooling effect of the combustion chamber 2.

[0034] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features. Any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A novel gas water heater, comprising a housing (1), wherein a combustion chamber (2) is disposed inside the housing (1), a heat exchanger (3) is disposed above the combustion chamber (2), an inlet pipe (4) is connected to the inlet end of the heat exchanger (3), and an outlet pipe (5) is connected to the outlet end of the heat exchanger (3), and an inlet connector (6) and an outlet connector (7) are disposed at the lower part of the housing (1), characterized in that: The end of the water inlet pipe (4) away from the heat exchanger (3) extends downward and is connected to the water inlet connector (6). The end of the water outlet pipe (5) away from the heat exchanger (3) extends downward and is connected to the water outlet connector (7). Both the water inlet pipe (4) and the water outlet pipe (5) have a gap between them and the outer wall of the combustion chamber (2). An exhaust fan (8) is provided at the upper opening of the combustion chamber (2). The exhaust fan (8) is located above the heat exchanger (3). The air inlet of the exhaust fan (8) is connected to the upper end of the combustion chamber (2), and the air outlet extends to the upper part of the shell (1). Each side wall of the combustion chamber (2) is provided with a cavity. Each cavity has an air inlet (9) on its outer side wall and an air outlet (10) on its inner side wall.

2. The gas water heater with a novel structure according to claim 1, characterized in that: The combustion chamber (2) is made of stainless steel.

3. A gas water heater with a novel structure according to claim 1, characterized in that: The combustion chamber (2) is made of aluminum-plated plate.

4. A gas water heater with a novel structure according to claim 1, characterized in that: The combustion chamber (2) has two smaller side walls with a single-layer cavity (13) inside. Multiple air inlets (9) are provided in the middle of the outer side wall of the single-layer cavity (13), and multiple air outlets (10) are provided in the upper and lower parts of the inner side wall.

5. A gas water heater with a novel structure according to claim 4, characterized in that: The combustion chamber (2) has a first cavity (14) and a second cavity (15) inside the two larger side walls. The first cavity (14) is located on the side of the second cavity (15) away from the interior of the combustion chamber (2). The upper and lower parts of the outer side wall of the first cavity (14) are provided with multiple air inlets (9). The middle part of the inner side wall of the first cavity (14) is provided with multiple connecting holes (16). The first cavity (14) is connected to the second cavity (15) through the multiple connecting holes (16). The upper and lower parts of the inner side wall of the second cavity (15) are provided with multiple air outlets (10).

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