Vertical normal-pressure dual-purpose hot water boiler

Abstract

The utility model discloses a vertical normal-pressure dual-purpose hot water boiler which comprises a vertically-arranged cylindrical boiler shell, a combustion chamber is arranged at the bottom in the boiler shell, a combustion engine is connected to the combustion chamber, a smoke chamber is arranged at the top in the boiler shell, and the upper end of the combustion chamber is communicated with the smoke chamber through a vertically-arranged first smoke pipe. A water cavity is formed among the inner wall of the boiler shell, the outer wall of the combustion chamber and the lower wall of the smoke chamber, a boiler water inlet is formed in the bottom side of the water cavity, a boiler water outlet is formed in the top side of the water cavity, a condenser is arranged on the outer top of the boiler shell, and the smoke chamber is communicated with a smoke inlet of the condenser. A coil heat exchanger water inlet is formed in the lower side of the water cavity, and a coil heat exchanger water outlet is formed in the upper side. According to the vertical normal-pressure dual-purpose hot water boiler, the heat efficiency of the boiler is guaranteed, meanwhile, hot water for heating and hot water for life can be provided for users at the same time, the purposes of small structure size and large functions are achieved, and the purposes of saving energy, reducing consumption and reducing cost are achieved.

Description

Technical Field

[0001] The utility model relates to a hot water boiler, in particular to a vertical normal pressure dual-purpose hot water boiler. Background Art

[0002] The conventional normal pressure hot water boilers generally have the problems of high exhaust temperature and low thermal efficiency at the smoke outlet, which leads to high fuel consumption and high operating costs for users. In order to improve this high energy consumption situation, patent CN201721373691.5 discloses a vertical condensing hot water boiler, which adds an upper condenser at the smoke outlet, uses an external water source to cool the flue gas without increasing the space occupied by the boiler, and reduces the exhaust temperature, so that the heat of the flue gas is fully absorbed and utilized, thereby achieving the purpose of energy saving. However, in this technical solution, the boiler can only realize the single function of providing hot water for heating, and cannot meet the special needs of users who want to realize multiple uses of one furnace. At the same time, in order to achieve a good heat exchange effect, the horizontal condenser used in this technical solution is generally large in size, resulting in the lateral size exceeding the lateral size of the boiler body, affecting the space utilization. Utility Model Content

[0003] The utility model aims to provide a vertical normal pressure dual-purpose hot water boiler which can save space while ensuring the thermal efficiency of the boiler.

[0004] The purpose of the utility model is achieved as follows: a vertical atmospheric pressure dual-purpose hot water boiler comprises a vertically arranged cylindrical shell, a combustion chamber is arranged at the bottom of the shell, a burner is connected to the combustion chamber, a smoke chamber is arranged at the top of the shell, the upper end of the combustion chamber is connected to the smoke chamber through a vertically arranged first smoke pipe, a water cavity is formed between the inner wall of the shell, the outer wall of the combustion chamber and the lower wall of the smoke chamber, a boiler water inlet is arranged at the bottom side of the water cavity, a boiler water outlet is arranged at the top side, a condenser is arranged at the top outside the shell, the smoke chamber is connected to the smoke inlet of the condenser, a coil heat exchanger is arranged in the water cavity, the coil heat exchanger is surrounded by the outside of the first smoke pipe, a coil heat exchanger water inlet is arranged at the lower side of the water cavity, and a coil heat exchanger water outlet is arranged at the upper side.

[0005] The utility model of the vertical atmospheric pressure dual-purpose hot water boiler adopts a series structure for the boiler water circulation. The system return water enters the condenser and is heated by the condenser before entering the boiler water inlet. After being heated by the boiler, the outlet water is provided to the user for heating. This system can effectively reduce the boiler exhaust temperature and improve the boiler efficiency. At the same time, by adding a coil heat exchanger in the boiler water cavity, the inlet and outlet of the coil heat exchanger can be connected to the domestic water system. After water-to-water heat exchange, domestic hot water can be provided to the user, realizing dual use of one boiler. In summary, the utility model of the vertical atmospheric pressure dual-purpose hot water boiler can provide users with hot water for heating and domestic hot water at the same time while ensuring the thermal efficiency of the boiler, realizing a small structure size and a large function, and achieving the purpose of energy saving and consumption reduction and cost reduction.

[0006] As a further improvement of the utility model, the condenser includes a lower smoke chamber, a heat exchange chamber and an upper smoke chamber from bottom to top, the lower smoke chamber is connected with the upper smoke chamber through a vertically arranged second smoke pipe, the second smoke pipe is provided with internal fins, the lower side of the heat exchange chamber is provided with a condenser water inlet, the upper side is provided with a condenser water outlet, the condenser water inlet is connected with an external water source or a return water pipeline, and the condenser water outlet is connected with the boiler water inlet. The condenser adopts a vertical structure, which can further reduce the horizontal size of the condenser and save space; the second smoke pipe is provided with internal fins, which can expand the heating surface, further improve the heat exchange efficiency, and reduce the exhaust temperature.

[0007] As a further improvement of the utility model, the inner fins include a first inner fin and a second inner fin that extend toward each other and are staggered, the roots of the first inner fin and the second inner fin are connected to the second smoke pipe, and the ends have inclined portions facing each other. The specially designed inner fins can have a heating area that is 3.5 times that of a bare pipe, and can effectively extend the residence time of the flue gas in the second smoke pipe, enhance the heat exchange effect, and thus help to miniaturize the condenser and save space.

[0008] As a further improvement of the present invention, the first inner fins and the second inner fins each include a plurality of fins that are arranged in parallel and at intervals, thereby further improving the heat exchange effect.

[0009] As a further improvement of the utility model, the inner wall of the lower smoke chamber gradually tilts outward from bottom to top, thereby guiding the smoke.

[0010] As a further improvement of the utility model, a turbulator is provided in the first smoke pipe to prolong the residence time of the smoke in the smoke pipe and improve the heat exchange effect.

[0011] As a further improvement of the utility model, the spoiler is a single-head spiral blade with a simple structure.

[0012] As a further improvement of the utility model, the smoke chamber, the upper smoke chamber and the lower smoke chamber are all connected with temperature measuring devices, so that through temperature monitoring, the operating parameters of the entire boiler system can be adjusted in time to make it work in an efficient and energy-saving state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a vertical atmospheric pressure dual-purpose hot water boiler of the utility model.

[0014] Figure 2 for Figure 1 Side view of.

[0015] Figure 3 It is a transverse cross-sectional view of the second smoke pipe of the vertical normal pressure dual-purpose hot water boiler of the utility model.

[0016] Among them, 1 boiler shell, 2 combustion chamber, 3 burner, 4 first smoke pipe, 5 smoke chamber, 6 water cavity, 7 boiler water inlet, 8 boiler water outlet, 9 coil heat exchanger, 10 coil heat exchanger water inlet, 11 coil heat exchanger water outlet, 12 condenser, 13 lower smoke chamber, 14 heat exchange chamber, 15 upper smoke chamber, 16 second smoke pipe, 17 condenser water outlet, 18 condenser water inlet, 19 first inner fin, 20 second inner fin, 21 temperature measuring device. DETAILED DESCRIPTION

[0017] like Figure 1-2 The vertical atmospheric dual-purpose hot water boiler shown comprises a vertical cylindrical shell 1, a combustion chamber 2 is provided at the bottom of the shell 1, a burner 3 is connected to the combustion chamber 2, a smoke chamber 5 is provided at the top of the shell 1, and the upper end of the combustion chamber 2 is connected to the smoke chamber 5 through a plurality of vertically arranged first smoke pipes 4. A spoiler is provided in the first smoke pipe 4 to extend the residence time of the smoke in the smoke pipe and improve the heat exchange effect. In this embodiment, the spoiler is a single-head spiral blade with a simple structure. A water cavity 6 is formed between the inner wall of the shell 1, the outer wall of the combustion chamber 2, and the lower wall of the smoke chamber 5, and a boiler water inlet 7 is provided at the bottom side of the water cavity 6, and a boiler water outlet 8 is provided at the top side. A coil heat exchanger 9 is also provided in the water cavity 6, and the coil heat exchanger 9 is arranged around the outside of the first smoke pipe 4, and a coil heat exchanger water inlet 10 is provided at the lower side of the water cavity 6, and a coil heat exchanger water outlet 11 is provided at the upper side. The water inlet 10 and the water outlet 11 of the coil heat exchanger are connected to the domestic water system, and can provide domestic hot water for users after water-to-water heat exchange.

[0018] A condenser 12 is provided at the top of the outer shell 1, and the smoke chamber 5 is connected to the smoke inlet of the condenser. Specifically, the condenser 12 includes a lower smoke chamber 13, a heat exchange chamber 14 and an upper smoke chamber 15 from bottom to top. The smoke inlet of the condenser is arranged at the bottom center of the lower smoke chamber 13, and the inner wall of the lower smoke chamber 13 gradually tilts outward from bottom to top, which plays a guiding role for the smoke. The lower smoke chamber 13 is connected to the upper smoke chamber 15 through a number of vertically arranged second smoke pipes 16, and the second smoke pipes 16 are provided with internal fins. A condenser water inlet 18 is provided on the lower side of the heat exchange chamber 14, and a condenser water outlet 17 is provided on the upper side. The condenser water inlet 18 is connected to an external water source or a return water pipeline, and the condenser water outlet 17 is connected to the boiler water inlet 7. The condenser 12 adopts a vertical structure, which can further reduce the lateral size of the condenser 12 and save space; the second smoke pipe 16 is provided with internal fins, which can expand the heating surface, further improve the heat exchange efficiency, and reduce the exhaust temperature.

[0019] like Figure 3As shown, the inner fins include a first inner fin 19 and a second inner fin 20 extending toward each other and staggered. The first inner fin 19 and the second inner fin 20 are connected to the second smoke pipe 16 at their roots and have inclined portions facing each other at their ends. That is, the inclined portion of the first inner fin 19 is close to the end of the second inner fin 20, and similarly, the inclined portion of the second inner fin 20 is close to the end of the first inner fin 19. The first inner fin 19 and the second inner fin 20 each include a plurality of parallel and spaced fins, from Figure 3 It can be seen that the first inner fin group formed by the plurality of first inner fins 19 is centrally symmetrical with the second inner fin group formed by the plurality of second inner fins 20. The specially designed inner fins can achieve a heating area 3.5 times that of a bare tube, and can effectively prolong the residence time of the flue gas in the second flue tube 16, enhance the heat exchange effect, and thus help to miniaturize the condenser 12 and save space.

[0020] like Figure 2 As shown, the smoke chamber 5, the upper smoke chamber 15, and the lower smoke chamber 13 are all connected to a temperature measuring device 21, so that the operating parameters of the entire boiler system can be adjusted in time through temperature monitoring to make it work in a high-efficiency and energy-saving state.

[0021] The vertical atmospheric dual-purpose hot water boiler of this embodiment adopts a series structure for the boiler water circulation. The system return water is first heated by the condenser 12 before entering the boiler. After being heated by the boiler, the outlet water is provided to the user for heating. This system can effectively reduce the boiler exhaust temperature and improve the boiler efficiency. At the same time, by adding a coil heat exchanger 9 in the boiler water chamber 6, by connecting the water inlet and outlet of the coil heat exchanger 9 to the domestic water system, domestic hot water can be provided to the user for use, realizing dual-purpose of one furnace. In addition, the setting of the turbulent in the first smoke pipe 4 and the setting of the fins in the second smoke pipe 16 can also make the flue gas heat be more fully absorbed and utilized, which helps to further reduce the exhaust temperature, so that a smaller condenser can be selected to save space. In summary, the structure of the vertical atmospheric dual-purpose hot water boiler of this embodiment can achieve a small structure size and a large function, so as to achieve the purpose of energy saving and cost reduction. After actual use and testing, the vertical atmospheric dual-purpose hot water boiler of this embodiment can finally reduce the exhaust temperature to 60°C and make the boiler thermal efficiency reach 98%.

[0022] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A vertical atmospheric pressure dual-purpose hot water boiler, characterized in that: It comprises a vertically arranged cylindrical boiler shell, a combustion chamber is arranged at the bottom of the boiler shell, a burner is connected to the combustion chamber, a smoke chamber is arranged at the top of the boiler shell, the upper end of the combustion chamber is connected with the smoke chamber through a vertically arranged first smoke pipe, a water cavity is formed between the inner wall of the boiler shell, the outer wall of the combustion chamber and the lower wall of the smoke chamber, a boiler water inlet is arranged at the bottom side of the water cavity, a boiler water outlet is arranged at the top side, a condenser is arranged at the top outside the boiler shell, the smoke chamber is connected with the smoke inlet of the condenser, and it is characterized in that a coil heat exchanger is arranged in the water cavity, the coil heat exchanger is surrounded by the outside of the first smoke pipe, the coil heat exchanger water inlet is arranged at the lower side of the water cavity, and the coil heat exchanger water outlet is arranged at the upper side.

2. The vertical atmospheric pressure dual-purpose hot water boiler according to claim 1 is characterized in that: The condenser includes a lower smoke chamber, a heat exchange chamber and an upper smoke chamber from bottom to top. The lower smoke chamber is connected to the upper smoke chamber through a vertically arranged second smoke pipe. The second smoke pipe is provided with internal fins. A condenser water inlet is provided on the lower side of the heat exchange chamber and a condenser water outlet is provided on the upper side. The condenser water inlet is connected to an external water source or a return water pipeline, and the condenser water outlet is connected to the boiler water inlet.

3. The vertical atmospheric pressure dual-purpose hot water boiler according to claim 2 is characterized in that: The inner fins include a first inner fin and a second inner fin which extend toward each other and are staggered. The first inner fin and the second inner fin are connected to the second smoke pipe at their roots and have inclined portions facing each other at their ends.

4. The vertical atmospheric pressure dual-purpose hot water boiler according to claim 3 is characterized in that: The first inner fins and the second inner fins each include a plurality of fins that are arranged in parallel and at intervals.

5. The vertical atmospheric pressure dual-purpose hot water boiler according to claim 2, characterized in that: The inner wall of the lower smoke chamber gradually inclines outwards from bottom to top.

6. The vertical atmospheric pressure dual-purpose hot water boiler according to claim 1, characterized in that: A spoiler is arranged in the first smoke pipe.

7. The vertical atmospheric pressure dual-purpose hot water boiler according to claim 6, characterized in that: The spoiler is a single-head spiral blade.

8. The vertical atmospheric pressure dual-purpose hot water boiler according to any one of claims 1 to 7, characterized in that: The smoke chamber, the upper smoke chamber and the lower smoke chamber are all connected with a temperature measuring device.

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