CN219328066U

CN219328066U - Gas steam generator

Info

Publication number: CN219328066U
Application number: CN202320557002.5U
Authority: CN
Inventors: 宋焕臣; 彭润顷
Original assignee: Qingdao Hongze Qingshan Energy Saving Technology Co ltd
Current assignee: Qingdao Hongze Qingshan Energy Saving Technology Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-07-11
Anticipated expiration: 2033-03-21

Abstract

The utility model relates to a gas steam generator, which comprises a shell, wherein a heat exchange cavity and a combustion chamber are arranged in the shell, a steam outlet is arranged at the upper end of the shell, a heat exchange air flow channel and a heat exchange water flow channel are arranged in the heat exchange cavity, the steam outlet is communicated with the heat exchange water flow channel, a base is arranged below the shell, a smoke exhaust pipe is arranged on one side of the base, a condenser is arranged in the base, the condenser is provided with a condensation air flow channel and a condensate water flow channel, a water inlet of the condensate water flow channel is connected with a water source, a water outlet of the condensate water flow channel is communicated with an inlet of the heat exchange water flow channel in the heat exchange cavity, an outlet at the bottom of the heat exchange air flow channel is communicated with an inlet of the condensation air flow channel, and an outlet of the condensation air flow channel is communicated with the smoke exhaust pipe. The utility model uses the low-temperature water to exchange heat with the medium-temperature flue gas after heat exchange in the heat exchange cavity in the condenser for secondary heat exchange, and recycles the heat of the medium-temperature flue gas, thereby further improving the heat recycling efficiency of the flue gas and further reducing the temperature of the discharged flue gas.

Description

Gas steam generator

Technical Field

The utility model belongs to the technical field of heating equipment, and particularly relates to a gas steam generator.

Background

The gas steam generator is a mechanical device for heating water into hot water or steam by utilizing heat energy generated by gas combustion, and mainly comprises a vertical type device and a horizontal type device. In the prior art, the steam generator mainly comprises a heat exchanger, a burner, a fan, a smoke exhaust pipe and other parts, water and high-temperature smoke generated by combustion are subjected to heat exchange in the heat exchanger, steam is generated after the water is heated and is exhausted from a steam outlet, and the high-temperature smoke is exhausted from the smoke exhaust pipe after being cooled. However, the conventional steam generator generally has the problems of low heat conversion efficiency, slow temperature rise, incapability of ensuring complete vaporization of water before being discharged from a steam outlet, and the like, so that energy is wasted, and the production cost is increased.

In order to solve the above problems, in the chinese patent No. 202221323556.0, there is provided a gas steam generator, which comprises a housing, a heat exchange cavity and a combustion chamber are provided in the housing, a burner assembly is installed at the top end of the combustion chamber, a water inlet and a steam outlet are provided at the lower end of the housing, the water inlet and the steam outlet are communicated with the heat exchange cavity, a heat exchange tube group is installed in the heat exchange cavity, the heat exchange tube group is composed of one or more fin heat exchange tubes, the fin heat exchange tubes are communicated with the combustion chamber, a spoiler is installed in the fin heat exchange tubes, a base is provided below the housing, a condensate separation cavity is formed in the base, and the other end of the fin heat exchange tubes is communicated with the condensate separation cavity. The high-temperature flue gas generated after combustion of the burner enters the fin heat exchange tube at the bottom of the combustion chamber and flows downwards along the fin heat exchange tube, low-temperature water enters the heat exchange cavity from the water inlet at the bottom and flows upwards along the heat exchange cavity under the action of water pressure, water is gradually heated and evaporated in the upward flowing process, meanwhile, the cooled flue gas flows into the condensed water separation cavity at the bottom, the low-temperature flue gas after heat exchange is discharged from the smoke exhaust pipe, condensed water in the flue gas after heat exchange is discharged from the water outlet on the base, and the high-temperature steam after heat exchange is discharged from the steam outlet at the top.

The heat exchange flow of water and high-temperature flue gas is greatly increased, so that heat exchange between the water and the high-temperature flue gas is more sufficient, and the heat exchange efficiency is greatly improved. However, after the high-temperature flue gas exchanges heat with water and enters the condensed water separation cavity in the base, the flue gas after heat exchange is directly discharged from the smoke discharge pipe at one side, and experiments prove that the temperature of the flue gas discharged at the moment is about 70-80 ℃, the heat of the flue gas in the part is directly discharged, the problem of heat waste exists, and the heat radiation is also caused to the outdoor environment in the discharging process.

Disclosure of Invention

The utility model mainly solves the technical problem of providing the gas steam generator which can further improve the heat recovery efficiency of flue gas and reduce the temperature of discharged flue gas.

In order to solve the technical problems, the utility model adopts the basic conception of the technical scheme that:

the utility model provides a gas steam generator, includes the casing have heat exchange chamber and combustion chamber in the casing upper end is provided with the steam outlet the heat exchange intracavity has heat exchange air current way and heat exchange water current way, steam outlet and heat exchange water current way intercommunication the base is installed to the below of casing the pipe of discharging fume is installed to one side of base install the condenser in the base, the condenser has condensation air current way and comdenstion water runner, the water inlet and the water source of comdenstion water runner are connected, the delivery port of comdenstion water runner with the heat exchange water current way entry intercommunication in the heat exchange chamber, the export of heat exchange air current way bottom in the heat exchange chamber with the entry intercommunication of condensation air current way, the export and the exhaust fume pipe intercommunication of condensation air current way.

Further, the condenser adopts a finned tube type condenser and consists of a plurality of U-shaped tubes and a plurality of fins sleeved outside the U-shaped tubes, wherein the U-shaped tubes are connected in series to form a condensate flow channel, and gaps among the fins form a condensate flow channel.

Further, the condenser is provided with a group of water inlets and water outlets, the U-shaped pipes are divided into a plurality of groups connected in parallel, the plurality of U-shaped pipes in each group are connected in series, and the plurality of groups of parallel U-shaped pipes are respectively integrated at an inlet end and an outlet end and then are connected with the water inlets and the water outlets;

or, the condenser is provided with a plurality of groups of water inlets and water outlets, the U-shaped pipes are divided into a plurality of groups of parallel connection, the plurality of U-shaped pipes in each group are connected in series, and two ends of each group of U-shaped pipes are respectively connected with one group of water inlets and one group of water outlets.

Further, surrounding plates for surrounding the condenser are arranged around the condenser, the surrounding plates are fixed on the inner wall of the base, and the top parts of the surrounding plates are closely attached to the top cover of the base.

Further, a cavity is formed between the bottom of the condenser and the bottom wall of the base, the outlet end of the condensation air flow channel is communicated with the cavity, and the cavity is communicated with the smoke exhaust pipe.

Further, a shell water inlet is formed in the lower end of the shell, and a water outlet of the condenser is connected with the shell water inlet at the lower end of the shell through a water pipe.

Further, the water pipe penetrates through the shell of the base and then is connected with the water inlet of the shell.

Further, the water inlet of the condenser is arranged at the bottom of the condenser, the water outlet of the condenser is arranged at the top of the condenser, water in the condensed water flow channel flows from bottom to top, and flue gas in the condensed gas flow channel flows from top to bottom.

Further, a plurality of rows of heat exchange pipes are arranged in the heat exchange cavity, the heat exchange pipes form a heat exchange air flow channel, a space outside the heat exchange pipes forms a heat exchange water flow channel, and the bottom outlet of the heat exchange pipes is communicated with the condensation air flow channel.

Further, the base comprises detachable fixed connection's box and top cap, the bottom of casing and exhaust pipe are all installed on the top cap.

In summary, according to the gas steam generator provided by the utility model, the condenser is installed in the base below the heat exchange cavity, so that low-temperature water of a water source passes through the condenser and then enters the heat exchange cavity above to exchange heat with high-temperature flue gas generated by combustion of the burner, the low-temperature water is utilized to exchange heat with medium-temperature flue gas after heat exchange in the heat exchange cavity for the second time in the condenser, and the heat of the medium-temperature flue gas discharged by the heat exchange cavity is recycled, so that the heat recovery efficiency of the flue gas can be further improved, the heat waste is reduced, the temperature of discharged flue gas can be further reduced, the final discharged flue gas temperature can be reduced to 50-55 ℃, and the heat radiation influence of the flue gas on the outdoor environment in the discharging process is reduced.

The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

In the drawings:

FIG. 1 is a schematic view of a gas steam generator according to the present utility model;

fig. 2 is a sectional view of the structure of the gas steam generator of the present utility model.

In the figure: the heat exchange type boiler comprises a shell 1, a heat exchange cavity 2, a combustion chamber 3, a combustor 4, a steam outlet 5, a heat exchange pipe 6, a shell water inlet 7, a base 8, a top cover 81, a box 82, a smoke exhaust pipe 9, a condenser 10, a U-shaped pipe 101, fins 102, a water inlet 11, a water outlet 12, a water pipe 13, a coaming 14, a cavity 15, an annular steam cavity 16, a first partition 17, a second partition 18, a spoiler 19 and a explosion venting pipe 20.

It should be noted that the drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 and 2, the present utility model provides a gas steam generator, comprising a housing 1, a heat exchange cavity 2 and a combustion chamber 3 in the housing 1, wherein the combustion chamber 3 is arranged above the heat exchange cavity 2, a burner assembly (not shown in the drawing) is arranged at the top end of the combustion chamber 3, the burner assembly comprises a burner 4, the burner 4 is arranged above the heat exchange cavity 2, and the burner 4 is preferably a ceramic plate infrared combustion plate.

In this embodiment, the upper end of the housing 1 is provided with a steam outlet 5, and a heat exchange air flow channel and a heat exchange water flow channel are provided in the heat exchange cavity 2, and more preferably, in this embodiment, a plurality of rows of heat exchange tubes 6 are installed in the heat exchange cavity 2, the heat exchange tubes 6 extend along the axis direction of the heat exchange cavity 2, the plurality of heat exchange tubes 6 are arranged in parallel in the heat exchange cavity 2, the flow channels in the heat exchange tubes 6 form the heat exchange air flow channel, and the space outside the heat exchange tubes 6 forms the heat exchange water flow channel.

In this embodiment, a housing water inlet 7 is provided at the lower end of the housing 1, and the housing water inlet 7 and the steam outlet 5 are both communicated with the heat exchange chamber 2. The heat exchange cavity 2 is filled with water, one end of the heat exchange tube 6 is communicated with the combustion chamber 3, and high-temperature flue gas generated by combustion circulates in the heat exchange tube 6. In order to further improve the heat exchange efficiency between the water and the high-temperature flue gas, the heat exchange tube 6 is preferably a fin type heat exchange tube, so as to increase the heat exchange area of the water and the high-temperature flue gas in the fin type heat exchange tube 6.

A base 8 is installed below the housing 1, a smoke exhaust pipe 9 is installed at one side of the base 8, and a condenser 10 is installed in the base 8. In this embodiment, for the purpose of disassembling and assembling, the daily maintenance of the condenser 10 is facilitated, the base 8 is composed of a top cover 81 and a box 82 which are detachably and fixedly connected, and the handle cover 81 and the box 82 are fixedly connected through a structure such as a buckle or fixedly connected through a screw. The bottom of the shell 1 and the smoke exhaust pipe 9 are fixedly arranged on the top cover 81 through bolts.

The condenser 10 has a condensation air flow channel and a condensation air flow channel (not labeled in the figure), the condenser can be any kind of heat exchanger, in this embodiment, the condenser 10 is preferably a fin-tube type condenser with low cost and easy installation, which is composed of a plurality of hairpin tubes 101 and a plurality of fins 102 sleeved outside the hairpin tubes 101, the hairpin tubes 101 are connected in series to form the condensation air flow channel, and gaps between the fins 102 form the condensation air flow channel. Further preferably, the U-shaped pipes 101 of the middle body portion of the condenser 10 are all disposed transversely and arranged up and down to enhance the heat exchange efficiency of the condenser 10.

The condensed water flow passage is connected with a water inlet 11 and a water outlet 12, the water inlet 11 is connected with a low-temperature water source, the water outlet 12 is communicated with the inlet of the heat exchange water flow passage in the heat exchange cavity 2, namely, the water outlet 12 is communicated with the space of the heat exchange cavity 2. In this embodiment, since the housing water inlet 7 is provided at the lower end of the housing 1, the water outlet 12 of the condenser 10 is connected to the housing water inlet 7 through the water pipe 13, and the water pipe 13 passes through the top cover 81 of the base 8 and then is connected to the housing water inlet 7.

In this embodiment, the condensate flow passage arrangement mode of the condenser 10 may adopt the following structures: the first is that the condenser 10 is provided with a group of water inlets 11 and water outlets 12, all U-shaped pipes 101 are connected in series to form a water flow path, and two ends of each U-shaped pipe 101 are respectively connected with the water inlet 11 and the water outlet 12; secondly, the condenser 10 is also provided with only one group of water inlets 11 and water outlets 12, but in order to improve the heat exchange efficiency of the condenser 10, the plurality of U-shaped pipes 101 are divided into a plurality of groups connected in parallel, the plurality of U-shaped pipes 101 in each group are connected in series, and the plurality of groups of parallel U-shaped pipes 101 are respectively connected with the water inlets 11 and the water outlets 12 after the inlet ends and the outlet ends are respectively summarized; third, the condenser 10 is provided with a plurality of groups of water inlets 11 and water outlets 12, for example, two water inlets 10 and two water outlets 12 can be provided, the plurality of U-shaped pipes 101 are divided into two groups connected in parallel, and two ends of each group of U-shaped pipes 101 are respectively connected with one group of water inlets 11 and one group of water outlets 12, so that the water inlet efficiency is improved.

The housing water inlets 7 provided at the lower end of the housing 1 may be provided only in one or in plural, for example, two housing water inlets 7 are provided in the housing 1, and the two housing water inlets 7 are connected with the two water outlets 12 of the condenser 10 through water pipes 13, respectively.

An air outlet (not labeled in the figure) at the bottom of the heat exchange air flow channel in the heat exchange cavity 2 is communicated with the inlet end of the condensation air flow channel of the condenser 10, namely, the bottom outlets of all the heat exchange tubes 6 are communicated with the inlet end of the condensation air flow channel, and the outlet end of the condensation air flow channel is communicated with the smoke exhaust pipe 9.

The surrounding plate 14 for surrounding the condenser 10 is arranged around the condenser 10, the surrounding plate 14 is fixedly arranged on the base 8 through screws, the top of the surrounding plate 14 is tightly attached to the lower surface of the top cover 81 of the base 8 after being arranged, the surrounding plate 14 surrounds the condenser 10, so that the condenser 10 forms an air flow channel from top to bottom, the surrounding plate 14 can effectively prevent flue gas flowing out of the bottom of the heat exchange tube 6 from flowing sideways, and the heat exchange efficiency of the condenser 10 is ensured. The coaming 14 may be secured directly to the top cover 81 of the base 8 by screws or may be secured to the side or bottom wall of the box 82 by mounting brackets (not shown). The condenser 10 may be directly fixed to the shroud 14, or may be fixed to the top cover 81 or the case 82 of the base 8, as long as the shroud 14 is mounted so as to surround the condenser 10. The top of the condenser 10 is connected with the bottom of the heat exchange cavity 2 after the installation, or a certain interval can be reserved between the top of the condenser 10 and the bottom of the heat exchange cavity 2 after the installation, and the flue gas flowing out of the bottom of the heat exchange tube 6 flows down the condenser 10 after being mixed in the space.

A cavity 15 is arranged between the bottom of the condenser 10 and the bottom wall of the base 8, the outlet end of the condensation air flow channel is communicated with the cavity 15, the cavity 15 is communicated with the smoke exhaust pipe 9, low-temperature smoke after heat exchange firstly enters the space below the condenser 10 and is exhausted from the smoke exhaust pipe 9 at one side, and smooth flow of the smoke is facilitated.

In this embodiment, since the flue gas flows from top to bottom, in order to improve the heat exchange efficiency between the flue gas and the water in the condenser 10, the water inlet 11 of the condenser 10 is disposed at the bottom of the condenser 10, the water outlet 12 of the condenser 10 is disposed at the top of the condenser 10, the water in the condensed water flow channel flows from bottom to top, the flow directions of the water and the flue gas in the condenser 10 are the same as the flow directions of the water and the flue gas in the heat exchange cavity 2, and the water and the flue gas flow in opposite directions for improving the heat exchange efficiency between the water and the flue gas.

In this embodiment, the smoke exhaust pipe 9 extends upward, and a smoke outlet (not labeled in the figure) is formed on the top cover 81 of the base 8, and the smoke outlet is fixedly connected with the smoke exhaust pipe 9. A water outlet (not shown) is arranged at the bottom of the base 8, and the condensed water of the high-temperature flue gas is discharged from the water outlet. For convenience of drainage, the bottom wall of the base 8 is an inclined surface inclined toward the drainage port.

As shown in fig. 1 and 2, in this embodiment, further, the top of the heat exchange cavity 2 extends toward the direction of the combustion chamber 3 and surrounds the outside of the combustion chamber 3, an annular steam cavity 16 is formed on the outside of the combustion chamber 3, the steam outlet 5 is communicated with the annular steam cavity 16, and the arrangement of the annular steam cavity 16 can enable water or steam after heat exchange with high-temperature flue gas in the fin heat exchange tube 6 to further perform heat exchange with the high-temperature flue gas in the combustion chamber 3 again, so as to further improve heat exchange strength, enable water which is not evaporated to be completely evaporated and simultaneously improve evaporation temperature. Still more preferably, the heat exchange chamber 2 entirely encloses the combustion chamber 3 therein to allow sufficient heat exchange between water or steam and the high temperature flue gas within the combustion chamber 3.

In this embodiment, the annular steam cavity 16 is annular and surrounds the outside of the combustion chamber 3, preferably, the shell 1 at the top of the heat exchange cavity 2 is outwards expanded and surrounds the outside of the combustion chamber 3, and the shell 1 is of a water tower structure with thick top and thin bottom, so that the volume of the annular steam cavity 16 can be ensured, the volume of the combustion chamber 3 can be ensured, the number of fin heat exchange tubes 7 communicated with the combustion chamber 3 can be ensured as much as possible, and the heat exchange efficiency between water and high-temperature flue gas can be ensured.

In this embodiment, the upper combustion chamber 3 and the heat exchange chamber 2 are separated by a first partition plate 17, the first partition plate 17 has a cylindrical structure with an open upper part and a sealed bottom, and the first partition plate 17 encloses the combustion chamber 3 in a cylindrical shape. A second partition 18 is arranged at the bottom of the heat exchange cavity 2, the second partition 18 separates the heat exchange cavity 2 from the condenser 10 below, and the upper and lower ends of the heat exchange tube 6 are opened on the first partition 17 and the second partition 18 and are respectively communicated with the combustion chamber 3 and the condenser 10.

A spoiler 19 can be further arranged in each fin heat exchange tube 6, the spoiler 19 is beneficial to reducing the flow speed of high-temperature flue gas in the fin heat exchange tubes 6 and increasing the flow time of the high-temperature flue gas in the fin heat exchange tubes 6, so that the length of the burned part of the spoiler 19 is beneficial to prolonging, the far infrared radiant energy is increased, and the heat exchange strength is further increased. The spoiler 19 includes a spoiler rod inserted into the fin heat exchange tube 6 and extending in the axial direction of the fin heat exchange tube 6, and a spiral spoiler wound around the spoiler rod is provided on the spoiler rod.

In the present embodiment, one or more detonation tubes 20 for communicating the combustion chamber 3 with the outside are provided on the casing 1 of the annular steam chamber 16, and more preferably 3 to 6 detonation tubes 20 are provided in the circumferential direction of the combustion chamber 3. The detonation tube 20 may also be arranged directly on the housing of the combustion chamber 3 if the top housing 1 of the heat exchange chamber 2 does not completely enclose the combustion chamber 3. One end of the main body of the explosion venting pipe 20 is welded and connected to the outer wall of the combustion chamber 3, the other end of the main body of the explosion venting pipe 20 penetrates through the shell 1 to be communicated with the outside, and the main body of the explosion venting pipe 20 and the shell 1 are also welded and connected together. The outer end face of the explosion venting pipe 20 is an upward opening inclined face hole, and a cover plate capable of being automatically opened and closed is hermetically arranged at the outer end face of the explosion venting pipe 20. When deflagration occurs, the cover plate is sprung open, pressure is discharged, the effect of protecting the burner 4 is achieved, and after the deflagration is finished, the cover plate falls back to the state of sealing the detonation tube 20 under the action of gravity or the elasticity of the torsion spring.

The process of the gas steam generator is as follows:

the air and the fuel gas enter the burner 4, the surface of the burner 4 is sprayed and combusted, the temperature of the combustion chamber 3 is quickly increased, the high-temperature flue gas generated after the combustion of the burner 4 quickly enters all the fin heat exchange tubes 6 provided with the turbulators 19 at the bottom of the combustion chamber 3, low-temperature water enters the condenser 10 from the water inlet 11 of the condenser 10 on the base 8, flows upwards along the condenser 10 under the action of water pressure and enters the heat exchange cavity 2, further flows upwards in the heat exchange cavity 2, the high-temperature flue gas generated by the combustion of the burner 4 enters the fin heat exchange tubes 6 and flows downwards along the fin heat exchange tubes 6, the water is gradually heated and evaporated in the upward flowing process, the water enters the annular steam cavity 16 at the top and then is secondarily heated and evaporated, meanwhile, the cooled medium-temperature flue gas flows downwards into the condenser 10 in the base 8, the low-temperature flue gas enters the cavity 15 below the condenser 10 under the effect of water pressure, the waste heat of the medium-temperature flue gas after heat exchange is subjected to heat recovery again, finally the flue gas is discharged from the flue gas discharge tube 9 to the high-temperature steam outlet 6 after the heat exchange process, and the condensed water is discharged from the top of the high-temperature steam outlet 6.

According to the utility model, the condenser 10 is arranged in the base 8 below the heat exchange cavity 2, so that the low-temperature water of a water source passes through the condenser 10 and then enters the heat exchange cavity 2 above to exchange heat with the high-temperature flue gas generated by the combustion of the burner 4, the low-temperature water is utilized to exchange heat with the medium-temperature flue gas after heat exchange in the heat exchange cavity 2 for the second time in the condenser 10, and the heat of the medium-temperature flue gas discharged by the heat exchange cavity 2 is recycled, so that the heat recovery efficiency of the flue gas can be further improved, the heat waste is reduced, the temperature of the discharged flue gas can be further reduced, the final discharged flue gas temperature can be reduced to 50-55 ℃, and the heat radiation influence of the flue gas on the outdoor environment in the discharging process is reduced.

The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present utility model can be further combined or replaced by equivalent embodiments within the scope of the technical proposal of the present utility model without departing from the scope of the technical proposal of the present utility model.

Claims

1. The utility model provides a gas steam generator, includes the casing have heat exchange cavity and combustion chamber in the casing upper end is provided with steam outlet the heat exchange intracavity has heat transfer air current way and heat transfer water flow way, steam outlet and heat transfer water flow way intercommunication the base is installed to the below of casing one side of base installs the pipe of discharging fume, its characterized in that: the base is internally provided with a condenser, the condenser is provided with a condensation air flow passage and a condensation air flow passage, a water inlet of the condensation air flow passage is connected with a water source, a water outlet of the condensation air flow passage is communicated with an inlet of a heat exchange water flow passage in the heat exchange cavity, an outlet of the bottom of the heat exchange air flow passage in the heat exchange cavity is communicated with an inlet of the condensation air flow passage, and an outlet of the condensation air flow passage is communicated with a smoke exhaust pipe.

2. The gas steam generator of claim 1, wherein: the condenser adopts a finned tube type condenser and consists of a plurality of U-shaped tubes and a plurality of fins sleeved outside the U-shaped tubes, wherein the U-shaped tubes are connected in series to form a condensate flow channel, and gaps among the fins form a condensate flow channel.

3. The gas steam generator of claim 2, wherein: the condenser is provided with a group of water inlets and water outlets, the U-shaped pipes are divided into a plurality of groups connected in parallel, the plurality of U-shaped pipes in each group are connected in series, and the plurality of groups of parallel U-shaped pipes are respectively connected with the water inlets and the water outlets after being respectively gathered at an inlet end and an outlet end;

4. The gas steam generator of claim 1, wherein: the top cover of the base is tightly attached to the top cover of the base.

5. The gas steam generator of claim 1, wherein: a cavity is formed between the bottom of the condenser and the bottom wall of the base, the outlet end of the condensation air flow channel is communicated with the cavity, and the cavity is communicated with the smoke exhaust pipe.

6. The gas steam generator of claim 1, wherein: the lower end of the shell is provided with a shell water inlet, and the water outlet of the condenser is connected with the shell water inlet at the lower end of the shell through a water pipe.

7. The gas steam generator of claim 6, wherein: the water pipe passes through the shell of the base and then is connected with the water inlet of the shell.

8. The gas steam generator of claim 1, wherein: the water inlet of the condenser is arranged at the bottom of the condenser, the water outlet of the condenser is arranged at the top of the condenser, water in the condensed water flow passage flows from bottom to top, and flue gas in the condensed air flow passage flows from top to bottom.

9. The gas steam generator of claim 1, wherein: the heat exchange cavity is internally provided with a plurality of rows of heat exchange pipes, the heat exchange pipes form a heat exchange air flow channel, a space outside the heat exchange pipes forms a heat exchange water flow channel, and the bottom outlet of the heat exchange pipes is communicated with the condensation air flow channel.

10. The gas steam generator of any one of claims 1-9, wherein: the base comprises a box body and a top cover which are detachably and fixedly connected, and the bottom of the shell and the smoke exhaust pipe are both arranged on the top cover.