Energy-saving and environment-friendly full-premixing fuel gas heating device

Abstract

The invention discloses an energy-saving and environment-friendly full-premixing fuel gas heating device which comprises a premixing fan, a combustion chamber, a smoke exhaust pipe and a recycling pipe, the air outlet end of the premixing fan communicates with one end of the combustion chamber, the other end of the combustion chamber communicates with one end of the smoke exhaust pipe, and the recycling pipe communicates with the other end of the smoke exhaust pipe. The other end of the smoke exhaust pipe comprises a first smoke outlet and a second smoke outlet, the first smoke outlet is communicated with the outside, the second smoke outlet is communicated with one end of the recycling pipe, and the other end of the recycling pipe is communicated with the air inlet end of the premixing fan. Due to the fact that the recovery pipe is arranged, the smoke exhaust pipe is provided with the two smoke outlets (the first smoke outlet and the second smoke outlet), the first smoke outlet is used for exhausting part of smoke to the outside, the second smoke outlet is communicated with the recovery pipe so that the remaining smoke can be recovered to the premixing draught fan and then enters the premixing draught fan again for combustion, the recovered smoke can preheat fuel gas, the combustion efficiency is improved, and the combustion efficiency is improved. And in addition, part of incompletely-combusted products can be reused for combustion, and the ultra-low emission effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of gas water heaters, in particular to an energy-saving and environment-friendly full-premixed gas heating device. Background Art

[0002] The gas water heater includes a fan, a heat exchanger, a burner and a condenser. The flue gas generated by the combustion is generally discharged directly to the outside after passing through the condenser. Since the flue gas contains a large amount of pollutants and heat, direct discharge is neither energy-saving nor environmentally friendly. The existing technology generally reuses the flue gas by setting a secondary condensation 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 of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide an energy-saving and environmentally friendly full premixed gas heating device.

[0004] According to an embodiment of the present invention, the energy-saving and environmentally friendly fully premixed gas heating device includes: a premixing fan, a combustion chamber, a smoke exhaust pipe and a recovery pipe, the air outlet end of the premixing fan is connected to one end of the combustion chamber, the other end of the combustion chamber is connected to one end of the smoke exhaust pipe, the other end of the smoke exhaust pipe includes a first smoke outlet and a second smoke outlet, the first smoke outlet is connected to the outside, the second smoke outlet is connected to one end of the recovery pipe, and the other end of the recovery pipe is connected to the air inlet end of the premixing fan.

[0005] According to some embodiments of the present invention, the first smoke outlet is located at the end of the smoke exhaust pipe, and the second smoke outlet is located at the side of the smoke exhaust pipe.

[0006] According to some embodiments of the present invention, it further comprises a burner and a heat exchanger disposed in the combustion chamber, wherein the burner is located between the premixing fan and the heat exchanger;

[0007] Alternatively, the heat exchanger is located between the premixing fan and the burner.

[0008] According to some embodiments of the present invention, 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.

[0009] According to some embodiments of the present invention, the burner is located at the upper part / lower part of the combustion chamber, and correspondingly, the heat exchanger is located at the upper part / lower part of the combustion chamber.

[0010] According to some embodiments of the present invention, a condenser is further included. The condenser is located between the smoke exhaust pipe and the combustion chamber, and the condenser is communicated with the combustion chamber and the smoke exhaust pipe respectively.

[0011] According to some embodiments of the present invention, an air guide hood is provided between the premixing fan and the combustion chamber.

[0012] The energy-saving and environmentally friendly full premixed gas heating device according to the embodiment of the present invention has at least the following beneficial effects: since a recovery pipe is provided, and the smoke exhaust pipe is provided with two smoke outlets (a first smoke outlet and a second smoke outlet), wherein the first smoke outlet is used to discharge part of the smoke to the outside, and the second smoke outlet is connected to the recovery pipe to recover the remaining smoke to the premixed fan, and then enter the combustion again, the recovered smoke can not only preheat the gas to improve the combustion efficiency and play a role in energy saving, but also can reuse some of the incomplete combustion products for combustion, and has the effect of ultra-low emission. Compared with the secondary condenser, it not only saves volume, but also has better energy-saving and environmental protection effects.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings;

[0015] Figure 1 It is a structural diagram of a side-mounted fully premixed gas heating device;

[0016] Figure 2 It is a structural diagram of an inverted fully premixed gas heating device;

[0017] Figure 3 It is a three-dimensional structural diagram of a fully premixed gas heating device. DETAILED DESCRIPTION

[0018] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, 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 order of the indicated technical features.

[0021] Reference Figures 1 to 3 The present invention provides an energy-saving and environmentally friendly full premixed gas heating device, comprising: a premixing fan 10, a combustion chamber 20, a smoke exhaust pipe 30 and a recovery pipe 40, the air outlet end 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 smoke exhaust pipe 30, the other end of the smoke exhaust pipe 30 includes a first smoke outlet 31 and a second smoke outlet 32, the first smoke outlet 31 is connected to the outside, the second smoke outlet 32 ​​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 end of the premixing fan 10. Since a recovery pipe 40 is provided, and the smoke exhaust pipe 30 is provided with two smoke outlets (a first smoke outlet 31 and a second smoke outlet 32), wherein the first smoke outlet 31 is used to discharge part of the smoke to the outside, and the second smoke outlet 32 ​​is connected to the recovery pipe 40 to recover the remaining smoke to the premixing fan 10, and then enter the combustion again, the recovered smoke can not only preheat the fuel gas to improve the combustion efficiency and play a role in energy saving, but also can reuse part of the incomplete combustion products for combustion, and has the effect of ultra-low emissions.

[0022] Preferably, the first smoke outlet 31 is located at the end of the smoke exhaust pipe 30, and the second smoke outlet 32 ​​is located at the side of the smoke exhaust pipe 30, so as to discharge the fully utilized smoke to the outside. In some embodiments, a condenser 50 is further included, and the condenser 50 is located between the smoke exhaust pipe 30 and the combustion chamber 20, and the condenser 50 is connected to the combustion chamber 20 and the smoke exhaust pipe 30 respectively. The condenser 50 is used for the initial utilization of the smoke, and combined with the subsequent recovery pipe 40, the secondary utilization of the smoke can be achieved, which is more environmentally friendly and energy-saving.

[0023] Furthermore, an air guide hood 11 is provided between the premixing fan 10 and the combustion chamber 20 to improve the combustion effect.

[0024] 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.

[0025] like Figure 1As shown, in some embodiments, the burner 21 is located on one side of the combustion chamber 20 (such as the left or right side), and correspondingly, the heat exchanger 22 is located on the other side of the combustion chamber 20 to be opposite to the burner 21 (such as the right or left side), thereby realizing a side-mounted gas heating method to meet customer needs.

[0026] like Figure 2 As 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 an inverted gas heating method. 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 method. Various methods are used to meet the needs of different customers.

[0027] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0028] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An energy-saving and environmentally friendly fully premixed gas heating device, characterized in that: include: A premixing fan (10), a combustion chamber (20), a smoke exhaust pipe (30) and a recovery pipe (40), wherein the air outlet end 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 smoke exhaust pipe (30), the other end of the smoke exhaust pipe (30) comprises a first smoke outlet (31) and a second smoke outlet (32), the first smoke outlet (31) is connected to the outside, the second smoke outlet (32) 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 end of the premixing fan (10).

2. The energy-saving and environmentally friendly full premixed gas heating device according to claim 1 is characterized in that: The first smoke outlet (31) is located at the end of the smoke exhaust pipe (30), and the second smoke outlet (32) is located at the side of the smoke exhaust pipe (30).

3. The energy-saving and environmentally friendly full premixed gas heating device according to claim 1 is characterized in that: It also includes a burner (21) and a heat exchanger (22) arranged in the combustion chamber (20), wherein the burner (21) is located between the premixing fan (10) and the heat exchanger (22); Alternatively, the heat exchanger (22) is located between the premixing fan (10) and the burner (21).

4. The energy-saving and environmentally friendly full premixed gas heating device according to claim 3 is characterized in that: 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).

5. The energy-saving and environmentally friendly full premixed gas heating device according to claim 3 is characterized in that: The burner (21) is located at the upper part / lower part of the combustion chamber (20), and correspondingly, the heat exchanger (22) is located at the upper part / lower part of the combustion chamber (20).

6. The energy-saving and environmentally friendly full premixed gas heating device according to claim 1 is characterized in that: It also includes a condenser (50), which is located between the smoke exhaust pipe (30) and the combustion chamber (20), and the condenser (50) is communicated with the combustion chamber (20) and the smoke exhaust pipe (30) respectively.

7. The energy-saving and environmentally friendly full premixed gas heating device according to claim 1 is characterized in that: An air guide cover (11) is provided between the premixing fan (10) and the combustion chamber (20).

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