Normal pressure hot water boiler with heating system heat exchange device
Patent Information
- Application Number
- CN202522348198.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2026-10-13
- Estimated Expiration
- 2035-11-05
AI Technical Summary
[0002]热水锅炉是一种常用的供暖设备，用于居民热水、暖气供给等，但是在给高层用户供暖时，需要较高的压力将换热介质输送至相应的高度，若在锅炉的出口端直接进行增压输送，则容易引起压力失衡等问题，且对于压力的控制系统以及锅炉的管路系统都需要付出较高的额外成本
[0010]应用本实用新型提供的带有供暖系统换热装置的常压热水锅炉，包括锅炉和位于锅炉内的换热器，锅炉内通过燃料的燃烧产生热量，换热器具备依次连通的进水集箱、换热管道和出水集箱，进水集箱中通过进水管道通入换热介质，换热管道在进水集箱和出水集箱之间往复折返布置，其中的换热介质能够吸收锅炉内的热量，换热后得到的高温换热介质通过出水集箱以及出水管道排出；这样，只需在换热器上接通压力源，使换热介质的管道内提升至相应的压力，即可将换热后的高温换热介质输送至高层居民楼中使用，锅炉只需保持其原有的工作压力，控制和使用的成本更低；且换热管道在锅炉内往复折返，能够延长其内部的换热介质的流通路径，使得即便在较大的压力以及较高的流速下，其中的换热介质也能够充分吸收锅炉内的热量，提升能源利用率以及高层的供暖效果。同时，换热管道是布置在锅炉的上水套内，上水套内填充有换热介质，这部分换热介质吸收锅炉内的燃料产出的烟气的热量，随后换热管道内的介质在吸收上水套内的热量，上水套内的换热介质相较于锅炉的烟气其温度变化更加稳定，对于换热管道的加热效果更加均匀可控，因而能够进一步降低控制使用的便利性以及成本。
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Figure CN224850704U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of boiler technology, specifically relating to an atmospheric pressure hot water boiler with a heating system heat exchange device. Background Technology
[0002] Hot water boilers are commonly used heating equipment for residential hot water and heating supply. However, when heating high-rise buildings, higher pressure is required to transport the heat exchange medium to the corresponding height. Directly pressurizing the medium at the boiler outlet can easily cause pressure imbalance and other problems, and also incurs higher costs for the pressure control system and boiler piping system. Furthermore, at higher pressures, the flow velocity of the medium also increases, necessitating consideration of the medium's heat exchange efficiency to ensure that the heat exchange medium delivered to higher floors reaches the predetermined temperature. This invention aims to provide an atmospheric pressure hot water boiler with a heating system heat exchange device that solves the above-mentioned technical problems. Utility Model Content
[0003] To solve the above-mentioned technical problems, this utility model provides an atmospheric pressure hot water boiler with a heat exchange device for a heating system, comprising: A boiler that generates heat through the combustion of fuel; the boiler is equipped with an upper water jacket containing a heat exchange medium for exchanging heat with the fuel in the boiler. A heat exchanger, comprising an inlet water header, a heat exchange pipe and an outlet water header connected in sequence, wherein the heat exchange pipe is located within the upper water jacket. The heat exchange pipes are arranged to zigzag back and forth between the inlet water header and the outlet water header. The heat exchange medium is introduced into the inlet water header through the inlet water pipe, and the heat exchange medium in the outlet water header is discharged through the outlet water pipe.
[0004] Preferably, the upper water jacket is located at the top of the boiler, and the inlet water header, the heat exchange pipe and the outlet water header are all located inside the upper water jacket.
[0005] Preferably, the heat exchange pipe is a tube bundle containing a plurality of pipes.
[0006] Preferably, the heat exchange pipe is a stainless steel corrugated pipe.
[0007] Preferably, the inlet pipe is located on the bottom side wall of the inlet manifold, and the outlet pipe is connected to the top side wall of the outlet manifold.
[0008] Preferably, an exhaust pipe is provided on the top of both the inlet manifold and the outlet manifold.
[0009] Preferably, both the inlet manifold and the outlet manifold are provided with drain pipes, and drain valves are installed on the drain pipes.
[0010] The atmospheric pressure hot water boiler with a heating system heat exchange device provided by this utility model includes a boiler and a heat exchanger located inside the boiler. Heat is generated in the boiler through fuel combustion. The heat exchanger has an inlet manifold, a heat exchange pipe, and an outlet manifold connected in sequence. A heat exchange medium is introduced into the inlet manifold through the inlet pipe. The heat exchange pipe is arranged to zigzag between the inlet and outlet manifolds. The heat exchange medium absorbs heat from the boiler. The high-temperature heat exchange medium obtained after heat exchange is discharged through the outlet manifold and the outlet pipe. Thus, by simply connecting a pressure source to the heat exchanger to raise the pressure in the heat exchange medium pipe to the appropriate level, the high-temperature heat exchange medium can be delivered to high-rise residential buildings for use. The boiler only needs to maintain its original operating pressure, resulting in lower control and operating costs. Furthermore, the zigzag arrangement of the heat exchange pipe within the boiler extends the flow path of the heat exchange medium, allowing it to fully absorb heat from the boiler even under higher pressure and flow rates, thus improving energy utilization and the heating effect in high-rise buildings. Meanwhile, the heat exchange pipes are arranged inside the upper water jacket of the boiler, which is filled with heat exchange medium. This heat exchange medium absorbs the heat from the flue gas produced by the fuel in the boiler. Subsequently, the medium in the heat exchange pipes absorbs the heat from the upper water jacket. The temperature change of the heat exchange medium in the upper water jacket is more stable than that of the flue gas in the boiler, resulting in a more uniform and controllable heating effect on the heat exchange pipes. This further reduces the convenience and cost of control and use. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of an atmospheric pressure hot water boiler with a heating system heat exchange device provided in this embodiment of the utility model; Figure 2a and Figure 2b This is a schematic diagram of the structure of the heat exchanger of the atmospheric pressure hot water boiler with a heating system heat exchange device provided in this embodiment of the utility model; Figure 3 yes Figure 1 A sectional view; Among them, 1. Boiler; 11. Upper water jacket; 2. Heat exchanger; 211. Inlet water pipe; 212. Heat exchange pipe; 213. Outlet water pipe; 221. Inlet water header; 222. Outlet water header; 231. Inlet water chamber; 232. Outlet water chamber; 233. Inlet water header turning chamber; 234. Outlet water header turning chamber; 24. Exhaust pipe; 25. Sewage pipe. Detailed Implementation
[0012] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0013] Figure 1 This is a schematic diagram of the overall structure of an atmospheric pressure hot water boiler with a heating system heat exchange device provided in this embodiment of the utility model; Figure 2a and Figure 2b This is a schematic diagram of the structure of the heat exchanger of the atmospheric pressure hot water boiler with a heating system heat exchange device provided in this embodiment of the utility model.
[0014] like Figure 1 , Figure 2a and Figure 2b As shown, this utility model provides an atmospheric pressure hot water boiler with a heating system heat exchange device, including a boiler 1 and a heat exchanger 2. The boiler 1 is a device that can use the heat released by fuel combustion to raise the temperature inside the furnace. An upper water jacket 11 is provided inside the boiler 1, and the upper water jacket 11 contains the heat exchange medium of the boiler 1 itself, which is generally water. The low temperature water in the upper water jacket 11 can absorb the heat generated by the fuel in the boiler 1 and convert it into hot water. The heat exchanger 2 includes an inlet water header 221, a heat exchange pipe 212, and an outlet water header 222 connected in sequence. The heat exchange pipe 212 is located inside the upper water jacket 11. The heat exchange medium is introduced into the inlet water header 221 through the inlet water pipe 211, and the heat exchange medium is discharged from the outlet water header 222 through the outlet water pipe 213. In the heat exchanger, the heat exchange medium flows sequentially along the inlet water pipe 211, the inlet water header 221, the heat exchange pipe 212, the outlet water header 222, and the outlet water pipe 213.
[0015] By installing a heat exchanger 2 on the boiler 1, it is only necessary to connect a pressure source in the medium flow path of the heat exchanger 2 to make the pipeline reach the predetermined pressure, so that the high-temperature heat exchange medium in the heat exchanger 2 can be transported to the high-rise residential building, while the boiler 1 still maintains normal pressure operation, making pressure control more stable and simpler.
[0016] Furthermore, the heat exchange pipe 212 is arranged in a reciprocating manner between the inlet header 221 and the outlet header 222. This allows the heat exchange medium to flow back and forth within the heat exchange pipe 212 as it travels from the inlet header 221 to the outlet header 222, extending its flow path within the boiler. Therefore, when the heat exchanger 2 operates under high pressure, it ensures sufficient contact time between the heat exchange medium and the hot water in the upper water jacket 11, improving the utilization efficiency of heat within the boiler and enhancing the heating effect for high-rise residential users. Simultaneously, the heat exchange pipe 212 is located within the upper water jacket 11, where the hot water temperature distribution is more uniform and the temperature changes are more stable. This results in a more stable and controllable heating effect on the heat exchange medium within the heat exchange pipe 212, further reducing control and operating costs.
[0017] The pressure source mentioned above can be any existing pressurization equipment such as a compressor pump, as long as it can pressurize and raise the high-temperature heat exchange medium in heat exchanger 2 to the required height. Furthermore, the heat exchange medium in heat exchanger 2 is usually water. For example, when the user uses heating equipment such as radiators, the inlet channel 211 of heat exchanger 2 is connected to the cold water return end of the radiator, and the outlet channel 213 of heat exchanger 2 is connected to the hot water inlet end of the radiator, thus forming a circulating water circuit between heat exchanger 2 and the user's heating equipment.
[0018] like Figure 1 As shown, in one preferred embodiment, the upper water jacket 11 is located at the top of the combustion chamber of the boiler 1. The inlet header 221, heat exchange pipe 212, and outlet header 222 are all located inside the upper water jacket 11. The high-temperature flue gas generated by fuel combustion in the boiler 1 generally converges at the top of the combustion chamber. Placing the upper water jacket 11 at the top of the combustion chamber of the boiler 1 allows it to be in a high-temperature environment where the high-temperature flue gas is generated, increasing the heat exchange with the high-temperature flue gas and thus improving the heat absorption efficiency of the boiler 1. This is more conducive to the heating of the medium in the heat exchanger 2 by the upper water jacket 11. Furthermore, the fact that the inlet header 221, heat exchange pipe 212, and outlet header 222 are all located inside the upper water jacket 11 allows the heat exchange medium flowing in the inlet header 221 and outlet header 222 to also absorb heat from the upper water jacket 11, improving the heat transfer efficiency of the upper water jacket 11 for the medium in the heat exchanger 2. The specific installation method of the upper water jacket 11 inside the boiler 1, as well as the setting position and specific structure of other components inside the boiler 1, can be referred to the relevant solutions in the existing technology, and will not be elaborated here.
[0019] In addition, the boilers mentioned above can be biomass fuel boilers or boilers using other fuels such as coal and gas. When different types of boilers are selected, the installation and connection methods of the heat exchanger and the boiler can be adapted accordingly, which will not be elaborated here.
[0020] Figure 3 yes Figure 1 A sectional view.
[0021] exist Figure 3 In the illustrated embodiment, the heat exchange pipe 212 is a tube bundle containing several pipes, all connected between the inlet header 221 and the outlet header 222. Spacing exists between the outer walls of the pipes, allowing hot water within the upper water jacket 11 to circulate within these gaps. This increases the contact area between the heat exchange pipe 212 and the hot water within the upper water jacket 11, enabling the heat exchange medium inside to absorb heat from the boiler more fully and efficiently. Furthermore, in Figure 3 In the embodiment shown, the pipes in the heat exchange pipe 212 are arranged in several horizontal rows, and the pipes in each horizontal row are staggered with the pipes in the adjacent rows. This allows for the arrangement of more heat exchange pipes in the limited space between the inlet water header 221 and the outlet water header 222 while ensuring sufficient gaps between the pipes, thereby further improving the heat exchange efficiency.
[0022] In one preferred embodiment, the heat exchange pipe 212 is a stainless steel corrugated pipe, which is a pipe with evenly spaced corrugated protrusions in its shape. On the one hand, the corrugated structure of the pipe will generate turbulence when the medium flows inside the pipe, which will destroy the boundary layer at the pipe wall and reduce thermal resistance. Moreover, the corrugated surface increases the heat exchange area, thus improving the heat absorption efficiency of the heat exchange medium in the boiler. On the other hand, under turbulent conditions, the scouring effect of the medium on the pipe wall is enhanced, which can effectively inhibit the adhesion of dirt. When using water that is not completely pure for heating, it can effectively inhibit the adhesion of scale on the inner wall of the corrugated pipe, ensuring the normal use of the heat exchange pipe 212.
[0023] like Figure 3 As shown, in one preferred embodiment, the inlet pipe 211 is located on the bottom side wall of the inlet header 221, and the outlet pipe 213 is located on the top side wall of the outlet header 222, so that the heat exchange medium in the heat exchanger 2 generally flows from bottom to top, which is more in line with the usage scenario of the boiler provided by this utility model, which is pressurized from the low end to the high end. Furthermore, such as Figure 2b As shown, in one preferred embodiment, an inlet chamber 231 is provided in the inlet manifold 221, which is a cavity located within the inlet manifold 221. An outlet chamber 232 is provided in the outlet manifold 222, which is a cavity located within the outlet manifold 222. The space within the inlet manifold 221 excluding the inlet chamber 231 is the inlet manifold turning chamber 233, and the space within the outlet manifold 222 excluding the outlet chamber 232 is the outlet manifold turning chamber 234.
[0024] After the heat exchange medium enters the inlet pipe 211, it enters the inlet chamber 231, and then flows through the heat exchange pipe 212 into the outlet manifold turning chamber 234. The heat exchange medium turns within the turning chamber 234, flows through the heat exchange pipe 212 into the inlet manifold 221, enters the turning chamber 233, and then turns again towards the outlet manifold 222, finally entering the outlet chamber 232 and being discharged through the outlet pipe 213. By setting up the inlet, outlet, and turning chambers, the heat exchange medium in the heat exchange pipe 212 flows back and forth between the inlet manifold 221 and the outlet manifold 222, which increases the flow time of the heat exchange medium in the boiler and improves the efficiency of heat absorption. Furthermore, by setting the turning chamber for the heat exchange medium, severe flow resistance is avoided when the heat exchange medium turns within the pipe, reducing the generation of eddies and making the delivery of the heat exchange medium smoother while ensuring heat exchange uniformity.
[0025] like Figure 2a and Figure 3 As shown, in one preferred embodiment, vent pipes 24 are provided on the top of the inlet manifold 221 and the outlet manifold 222 to discharge non-condensable gases accumulated inside the shell of the heat exchanger 2, preventing gas accumulation inside the heat exchanger 2 and preventing gas film from adhering to the surface of the heat exchange tubes, thus ensuring heat exchange efficiency and the normal operation of the equipment. Drain pipes 25 are provided in both the inlet manifold 221 and the outlet manifold 222, and drain valves are installed on the drain pipes 25. After the heat exchanger 2 has been used for a period of time, the drain valves can be opened to discharge scale and other contaminants accumulated inside the heat exchanger 2 through the drain pipes 25, ensuring the normal operation of the equipment.
[0026] When the boiler described in this utility model is in use, the low-temperature heat exchange medium enters the inlet header 221 through the inlet pipe 211, and then flows back and forth between the inlet header 221 and the outlet header 222 through the heat exchange pipe 212 or the turning chamber in the header. Finally, the high-temperature heat exchange medium is discharged through the outlet pipe 213. During this process, a pressure source can be connected to the heat exchanger 2 to increase the high-temperature heat exchange medium at the outlet pipe 213 to a certain pressure, which can be used for heating of high-rise users. The boiler 1 can be kept at normal pressure, which can reduce the cost of control and use.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solution of this utility model do not depart from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered by the claims of this utility model.
Claims
1. An atmospheric pressure hot water boiler with a heating system heat exchange device, characterized in that, include: A boiler that generates heat through the combustion of fuel; the boiler is equipped with an upper water jacket containing a heat exchange medium for exchanging heat with the fuel in the boiler. A heat exchanger, comprising an inlet water header, a heat exchange pipe and an outlet water header connected in sequence, wherein the heat exchange pipe is located within the upper water jacket. The heat exchange pipes are arranged to zigzag back and forth between the inlet water header and the outlet water header. The heat exchange medium is introduced into the inlet water header through the inlet water pipe, and the heat exchange medium in the outlet water header is discharged through the outlet water pipe.
2. The atmospheric pressure hot water boiler with a heating system heat exchange device according to claim 1, characterized in that, The upper water jacket is located at the top of the boiler, and the inlet water header, the heat exchange pipe, and the outlet water header are all located inside the upper water jacket.
3. The atmospheric pressure hot water boiler with a heating system heat exchange device according to claim 1, characterized in that, The heat exchange pipe is a tube bundle containing several pipes.
4. The atmospheric pressure hot water boiler with a heating system heat exchange device according to claim 3, characterized in that, The heat exchange pipe is a stainless steel corrugated pipe.
5. The atmospheric pressure hot water boiler with a heating system heat exchange device according to claim 1, characterized in that, The inlet pipe is located on the bottom side wall of the inlet manifold, and the outlet pipe is connected to the top side wall of the outlet manifold.
6. The atmospheric pressure hot water boiler with a heating system heat exchange device according to claim 1, characterized in that, Vent pipes are provided on the top of both the inlet manifold and the outlet manifold.
7. The atmospheric pressure hot water boiler with a heating system heat exchange device according to claim 6, characterized in that, Both the inlet and outlet water collection tanks are equipped with drain pipes, and drain valves are installed on the drain pipes.