Full-premixing gas water heater

Abstract

The utility model discloses a full premixing gas water heater, including premixing fan, combustion chamber, exhaust pipe and recovery pipe, the air outlet end of premixing fan is communicated with the one end of combustion chamber, the other end of combustion chamber is communicated with the one end of exhaust pipe, the other end of exhaust pipe is communicated with the one end of recovery pipe, the other end of recovery pipe is communicated with the combustion chamber, and the other end of recovery pipe is communicated with the combustion chamber. And the other end of the recovery pipe is communicated with the air inlet end of the premixing fan. Due to the fact that the recycling pipe is arranged, the smoke exhaust pipe is communicated with the recycling pipe to recycle residual smoke to the premixing draught fan, then the residual smoke is burnt again, the recycled smoke can preheat fuel gas, the burning efficiency is improved, the energy-saving effect is achieved, part of incompletely-burnt products can be reused for burning, and the ultra-low emission effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas water heater technical field, especially a full premix gas water heater. BACKGROUND

[0002] The gas water heater device includes a fan, a heat exchanger, a burner and a condenser, and the flue gas generated by combustion is generally directly discharged to the outside after passing through the condenser, since the flue gas contains a large amount of pollutants and heat, direct discharge is not energy-saving and not environmentally friendly. The prior art generally recovers the flue gas by setting a secondary condensing structure, but the utilization rate is not high, and a lot of heat and pollutants are still discharged to the outside, and the secondary condenser occupies a large space. SUMMARY

[0003] The utility model discloses a full premix gas water heater which at least solves one of the technical problems in the prior art.

[0004] The full premix gas water heater according to the utility model embodiment comprises a premix fan, a combustion chamber, an exhaust pipe and a recovery pipe, the air outlet end of the premix fan is communicated with one end of the combustion chamber, the other end of the combustion chamber is communicated with one end of the exhaust pipe, the other end of the exhaust pipe is communicated with one end of the recovery pipe, the other end of the recovery pipe is communicated with the air inlet end of the premix fan, and at least one smoke outlet hole communicated with the outside is arranged on the exhaust pipe.

[0005] According to some embodiments of the utility model, the combustion chamber further comprises a burner and a heat exchanger, the burner is located between the premix fan and the heat exchanger.

[0006] Alternatively, the heat exchanger is located between the premix fan and the burner.

[0007] According to some embodiments of the utility model, the burner is located on the left side / right side of the combustion chamber, and correspondingly, the heat exchanger is located on the right side / left side of the combustion chamber.

[0008] According to some embodiments of the utility model, the burner is located on the upper part / lower part of the combustion chamber, and correspondingly, the heat exchanger is located on the upper part / lower part of the combustion chamber.

[0009] According to some embodiments of the utility model, the combustion chamber further comprises a condenser, the condenser is located between the exhaust pipe and the combustion chamber, and the condenser is communicated with the combustion chamber and the exhaust pipe respectively.

[0010] According to some embodiments of the utility model, a wind deflector is arranged between the premix fan and the combustion chamber.

[0011] The full-premix gas water heater has at least the following beneficial effects: the recovery pipe is arranged, the exhaust pipe is communicated with the recovery pipe to recycle the residual flue gas to the premix blower, and then the flue gas is combusted again, the recycled flue gas can preheat the gas to improve the combustion efficiency, has the effect of energy saving, and the products of incomplete combustion can be combusted again, and the effect of ultra-low emission is achieved.

[0012] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description. BRIEF DESCRIPTION OF DRAWINGS

[0013] The specific embodiments of the present application will be further described in combination with the drawings;

[0014] Figure 1 is a structure diagram of a full-premix gas water heater of a side type;

[0015] Figure 2 is a structure diagram of a full-premix gas water heater of an upside-down type;

[0016] Figure 3 is a three-dimensional structure diagram of a full-premix gas water heater. DETAILED DESCRIPTION

[0017] The specific embodiments of the present application will be further described in combination with the drawings;

[0018] In the description of the present application, it should be understood that, in relation to the position description, for example, the position or location relationship indicated by the upper, lower, front, rear, left, right and the like is based on the position or location relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application.

[0019] In the description of the present application, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than and the like are not included in the number, above, below and the like are included in the number. If it is described that the first, the second is only used for distinguishing the technical features for the purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0020] Reference Figures 1 to 3 This utility model discloses a fully premixed gas water heater, comprising: a premixing fan 10, a combustion chamber 20, a flue pipe 30, and a recovery pipe 40. The air outlet of the premixing fan 10 is connected to one end of the combustion chamber 20, the other end of the combustion chamber 20 is connected to one end of the flue pipe 30, the other end of the flue pipe 30 is connected to one end of the recovery pipe 40, and the other end of the recovery pipe 40 is connected to the air inlet of the premixing fan 10. The flue pipe 30 is provided with at least one smoke outlet 31 communicating with the outside. Because of the recovery pipe 40, the other end of the flue pipe 30 is connected to the recovery pipe 40 to recover residual flue gas back to the premixing fan 10, which then re-enters combustion. The recovered flue gas not only preheats the gas to improve combustion efficiency and saves energy, but also reuses some of the incomplete combustion products, resulting in ultra-low emissions. The recovered combustion flue gas is discharged to the outside through the smoke outlet 31.

[0021] In some embodiments, the side of the exhaust pipe 30 is provided with an opening to communicate with the recovery pipe 40, and the port of the exhaust pipe 30 is a smoke outlet 31.

[0022] Preferably, in some embodiments, the exhaust pipe 30 is provided with a plurality of smoke outlet holes 31. The plurality of smoke outlet holes 31 surround the exhaust pipe 30, which does not affect the exhaust of smoke to the outside, while the flow path of the smoke mainly flows directly into the recovery pipe 40 along the shape of the exhaust pipe 30, resulting in high recovery efficiency.

[0023] In some embodiments, a condenser 50 is also included. The condenser 50 is located between the flue pipe 30 and the combustion chamber 20, and the condenser 50 is connected to both the combustion chamber 20 and the flue pipe 30. The condenser 50 is used for the initial utilization of flue gas. Combined with the subsequent recovery pipe 40, the flue gas can be reused, which is more environmentally friendly and energy-saving.

[0024] Furthermore, a guide shroud 11 is provided between the premixed blower 10 and the combustion chamber 20 to improve the combustion effect.

[0025] Furthermore, it also includes a burner 21 and a heat exchanger 22 disposed in the combustion chamber 20, in some embodiments, such as Figure 1 and Figure 2 As shown, the burner 21 is located between the premixing fan 10 and the heat exchanger 22. In some embodiments, the heat exchanger 22 is located between the premixing fan 10 and the burner 21. Both methods can achieve combustion and heat exchange functions.

[0026] like Figure 1 As shown, in some embodiments, the burner 21 is located on one side of the combustion chamber 20 (e.g., the left or right side), and correspondingly, the heat exchanger 22 is located on the other side of the combustion chamber 20 opposite to the burner 21 (e.g., the right or left side), thereby realizing a side-mounted gas heating method to meet customer needs.

[0027] As Figure 2 shown, in some embodiments, the burner 21 is located at the upper part of the combustion chamber 20, and the heat exchanger 22 is located at the lower part of the combustion chamber 20, so as to realize the inverted gas heating mode. Alternatively, the burner 21 is located at the lower part of the combustion chamber 20, and the heat exchanger 22 is located at the upper part of the combustion chamber 20, which is a more common gas heating mode. Various modes can be used to meet the needs of different customers.

[0028] Those skilled in the art can easily understand that the above preferred modes can be freely combined and superimposed without conflict.

[0029] The above is only the preferred embodiment of the present application, and does not limit the patent range of the present application. Any equivalent structural transformation, direct or indirect application in other related technical fields made under the utility model concept of the present application and the contents of the present application specification and drawings are included in the patent protection range of the present application.

Claims

1. A fully premix gas water heater characterized in that, It comprises: A premixing fan (10), a combustion chamber (20), a flue (30) and a recovery pipe (40), the air outlet end of the premixing fan (10) is communicated with one end of the combustion chamber (20), the other end of the combustion chamber (20) is communicated with one end of the flue (30), the other end of the flue (30) is communicated with one end of the recovery pipe (40), the other end of the recovery pipe (40) is communicated with the air inlet end of the premixing fan (10), and at least one smoke outlet hole of the flue (30) is communicated with the outside.

2. The fully-premixed gas water heater of claim 1, wherein: It also comprises a burner (21) and a heat exchanger (22) arranged in the combustion chamber (20), the burner (21) is located between the premixing fan (10) and the heat exchanger (22). Or, the heat exchanger (22) is located between the premixing fan (10) and the burner (21).

3. The fully-premixed gas water heater according to claim 2, wherein: The burner (21) is located on the left side / right side of the combustion chamber (20), and correspondingly, the heat exchanger (22) is located on the right side / left side of the combustion chamber (20).

4. The fully-premixed gas water heater according to claim 2, wherein: The burner (21) is located on the upper part / lower part of the combustion chamber (20), and correspondingly, the heat exchanger (22) is located on the upper part / lower part of the combustion chamber (20).

5. The fully-premixed gas water heater according to claim 1, wherein: It also comprises a condenser (50), the condenser (50) is located between the flue (30) and the combustion chamber (20), and the condenser (50) is communicated with the combustion chamber (20) and the flue (30) respectively.

6. The fully-premixed gas water heater according to claim 1, wherein: The air guide cover (11) is arranged between the premixing fan (10) and the combustion chamber (20).

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