A gas-fired wall-hung boiler skid structure for heating systems
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-08-11
AI Technical Summary
[0003]在当前的供暖系统中，传统燃气壁挂炉应用广泛，但传统壁挂炉排放烟气时，由于缺乏有效的换热处理结构，烟气直接排出时温度较高，与室外空气温差大，容易在排气口形成明显白烟，影响周边环境美观，并且现有的冷凝式壁挂炉虽能回收部分热量，但在与供暖系统的集成结构设计上存在不足，使得其整体换热协同性差，因此亟需一种用于供暖系统的燃气壁挂炉撬体结构用于解决上述问题
1、本实用新型通过设置烟气换热组件，能够使壁挂炉排放的烟气与消白风机吸入的室外空气充分换热，待烟气温度降至与室外温度的偏差在3℃以内后排出，有效消除了排气口的白烟现象，改善了环境美观度，同时可根据实际需求定制若干台并联连接的冷凝式壁挂炉，且撬体框架结构紧凑，占地面积小，有效节省了有限的施工面积，简化了安装流程，提高了施工效率，同时采用并联连接方式，每台壁挂炉独立运行，当单台壁挂炉出现故障时，其他壁挂炉可正常运行，不影响整体供暖系统的运行，保障了供暖的连续性和稳定性
Smart Images
Figure CN224623172U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of heating equipment technology, specifically relating to a skid structure for a gas-fired wall-hung boiler used in a heating system. Background Technology
[0002] A gas-fired wall-hung boiler is a household appliance that uses natural gas as its energy source, primarily for independent home heating and providing domestic hot water. It heats water by burning natural gas and then distributes the hot water to terminal devices such as underfloor heating or radiators for heat dissipation. It can also meet the hot water needs of areas such as bathing and the kitchen.
[0003] In current heating systems, traditional gas-fired wall-hung boilers are widely used. However, when traditional wall-hung boilers discharge flue gas, due to the lack of an effective heat exchange structure, the flue gas is directly discharged at a high temperature, resulting in a large temperature difference with the outdoor air. This easily forms obvious white smoke at the exhaust port, affecting the aesthetics of the surrounding environment. Furthermore, although existing condensing wall-hung boilers can recover some heat, their integration design with the heating system is inadequate, resulting in poor overall heat exchange coordination. Therefore, there is an urgent need for a gas-fired wall-hung boiler skid structure for heating systems to solve the above problems. Utility Model Content
[0004] In view of the problems mentioned above in the background technology, the purpose of this utility model is to provide a skid structure for a gas-fired wall-hung boiler for a heating system.
[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows: A gas-fired wall-hung boiler skid structure for a heating system includes a skid frame. A plurality of condensing wall-hung boilers are connected in parallel inside the skid frame. The output ends of the condensing wall-hung boilers are connected to water supply pipes. The output ends of the water supply pipes are connected to primary side inlet pipes. The output ends of the primary side inlet pipes are connected to plate heat exchangers. A primary side return pipe is connected to one side of the bottom of the plate heat exchanger. The output end of the primary side return pipe is connected to a return pipe, and the output end of the return pipe is connected to the condensing wall-hung boiler. A secondary side return water pipe is installed at the bottom of the other side of the plate heat exchanger. A secondary side supply water pipe is installed above the secondary side return water pipe of the plate heat exchanger. A flue gas heat exchange assembly is installed on one side of the skid frame. The flue gas heat exchange assembly includes a flue gas collection pipe. The inlet end of the flue gas collection pipe is connected to the flue gas outlet of the condensing wall-hung boiler. The outlet end of the flue gas collection pipe is connected to a whitening heat exchange chamber. A whitening fan is installed at the bottom of the whitening heat exchange chamber. An exhaust pipe is connected to the outlet end of the whitening heat exchange chamber.
[0006] Furthermore, the input end of the flue gas elimination fan is connected to the outside air. This structural design allows outside air to be drawn into the flue gas elimination heat exchange chamber, where it exchanges heat with the flue gas.
[0007] Furthermore, the condensing wall-hung boiler is connected to a water pump, and the input end of the water pump is equipped with a temperature sensor. The temperature sensor is connected to an antifreeze controller, which is also connected to the water pump. This structural design ensures that when the operating temperature is below the antifreeze temperature, the water pump will rotate intermittently to prevent the equipment from freezing.
[0008] Furthermore, the end of the exhaust pipe extends to the outside of the skid frame to form an exhaust port. This structural design facilitates exhaust operations.
[0009] Furthermore, an assembly rack is fixedly installed within the skid frame, and several condensing wall-hung boilers are fixedly installed on the assembly rack. The number of these condensing wall-hung boilers can be customized according to actual heating needs. This structural design ensures the fixed installation of the condensing wall-hung boilers while avoiding the decrease in thermal efficiency caused by too many devices operating at low loads simultaneously, thus reducing subsequent gas and electricity consumption costs.
[0010] The beneficial effects of this utility model are as follows: 1. This utility model, by incorporating a flue gas heat exchange component, enables sufficient heat exchange between the flue gas emitted by the wall-hung boiler and the outdoor air drawn in by the white smoke elimination fan. The flue gas is discharged only after its temperature drops to within 3°C of the outdoor temperature, effectively eliminating white smoke from the exhaust port and improving the aesthetics of the environment. Furthermore, several condensing wall-hung boilers can be customized and connected in parallel according to actual needs. The compact skid frame structure occupies a small area, effectively saving limited construction space, simplifying the installation process, and improving construction efficiency. The parallel connection method allows each boiler to operate independently; if one boiler fails, the others can continue to operate normally, without affecting the overall heating system, ensuring the continuity and stability of heating. 2. This utility model, by setting up a condensing wall-hung boiler and a plate heat exchanger, allows the high-temperature fluid heated by the condensing wall-hung boiler to enter the plate heat exchanger through the primary side inlet pipe, and complete efficient heat exchange with the low-temperature heating return water input through the secondary side return pipe. This not only ensures the stable temperature rise of the secondary side heating return water, but also allows the primary side fluid to be cooled and then flow back to the wall-hung boiler through the return pipe for reheating, forming a closed-loop heat utilization and significantly improving the overall heat exchange efficiency. Attached Figure Description
[0011] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is an axial side view of a gas-fired wall-hung boiler skid structure for a heating system according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the internal structure of a gas-fired wall-hung boiler skid for a heating system according to an embodiment of the present invention. Figure 3 This is a schematic diagram of the internal axial side structure of a gas-fired wall-hung boiler skid structure for a heating system according to an embodiment of the present invention. The symbols for the main components are explained below: 1. Skid frame; 2. Condensing wall-hung boiler; 3. Water supply pipe; 4. Primary side water inlet pipe; 5. Plate heat exchanger; 6. Primary side return water pipe; 7. Return water pipe; 8. Secondary side return water pipe; 9. Secondary side water supply pipe; 10. Flue gas collection pipe; 11. Whitening heat exchange chamber; 12. Whitening fan; 13. Exhaust pipe; 14. Exhaust port; 15. Assembly frame. Detailed Implementation
[0012] To enable those skilled in the art to better understand this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.
[0013] like Figure 1-3 As shown, this utility model discloses a gas-fired wall-hung boiler skid structure for a heating system. The skid frame 1 houses several condensing wall-hung boilers 2 connected in parallel. The output ends of the condensing wall-hung boilers 2 are connected to water supply pipes 3. The output ends of the water supply pipes 3 are connected to primary side inlet pipes 4. The output ends of the primary side inlet pipes 4 are connected to plate heat exchangers 5. A primary side return water pipe 6 is connected to one side of the bottom of the plate heat exchanger 5. The output end of the primary side return water pipe 6 is connected to a return water pipe 7. The output end of the return water pipe 7 is connected to the condensing wall-hung boilers 2. A secondary side return water pipe 8 is installed at the bottom of the other side of the heat exchanger 5. A secondary side supply water pipe 9 is installed on the upper side of the secondary side return water pipe 8 of the plate heat exchanger 5. A flue gas heat exchange assembly is installed on one side of the skid frame 1. The flue gas heat exchange assembly includes a flue gas collection pipe 10. The inlet end of the flue gas collection pipe 10 is connected to the flue gas outlet of the condensing wall-hung boiler 2. The outlet end of the flue gas collection pipe 10 is connected to a whitening heat exchange chamber 11. A whitening fan 12 is installed at the bottom of the whitening heat exchange chamber 11. An exhaust pipe 13 is connected to the outlet end of the whitening heat exchange chamber 11.
[0014] Preferably, the inlet of the anti-fouling fan 12 is connected to the outside air. This structural design allows outside air to be drawn into the anti-fouling heat exchange chamber 11, where it exchanges heat with the flue gas. In practice, other structural shapes of the anti-fouling fan 12 can also be considered depending on the specific circumstances.
[0015] Preferably, the condensing wall-hung boiler 2 is connected to a water pump, and the water pump's input end is equipped with a temperature sensor. The temperature sensor is connected to an antifreeze controller, which is also connected to the water pump. With this design, when the operating temperature is lower than the antifreeze temperature, the water pump will rotate intermittently to prevent the equipment from freezing. In practice, other antifreeze structural shapes for the condensing wall-hung boiler 2 can also be considered depending on the specific circumstances.
[0016] Preferably, the end of the exhaust pipe 13 extends to the outside of the skid frame 1 to form an exhaust port 14. This structural design facilitates exhaust operations. In practice, other structural shapes of the exhaust pipe 13 can also be considered depending on the specific circumstances.
[0017] Preferably, an assembly rack 15 is fixedly installed inside the skid frame 1, and several condensing wall-hung boilers 2 are fixedly installed on the assembly rack 15. The number of condensing wall-hung boilers 2 can be customized according to actual heating needs. This structural design ensures the fixed installation of the condensing wall-hung boilers, while avoiding the decrease in thermal efficiency caused by too many devices operating at low loads simultaneously, thus reducing subsequent gas and electricity consumption costs. In practice, other installation structure shapes for the condensing wall-hung boilers 2 can also be considered depending on specific circumstances.
[0018] In this embodiment, during use, the secondary return water of the heating system first enters the plate heat exchanger 5 inside the skid frame 1 through the secondary return water pipe 8. The low-temperature fluid in the secondary return water pipe 8 is heated after passing through the plate heat exchanger 5, and the water flows into the heating system through the secondary supply water pipe 9 for terminal heating. The low-temperature fluid after heat exchange in the plate heat exchanger 5 is transported to the return water pipe 7 through the primary return water pipe 6, and then to the condensing wall-hung boiler 2. After being heated by the condensing wall-hung boiler 2, it is transported to the primary inlet water pipe 4 through the supply water pipe 3, and then input into the plate heat exchanger 5 for heat exchange through the primary inlet water pipe 4. The high-temperature fluid output from the primary inlet water pipe 4 passes through the plate heat exchanger 5. The heat exchanger 5 exchanges heat with the low-temperature fluid input from the secondary side return water pipe 8. After the temperature rises, it is output from the secondary side supply water pipe 9 for use. After cooling, it is input from the secondary side return water pipe 8 for heat exchange. The high-temperature fluid input from the primary side inlet water pipe 4 exchanges heat in the plate heat exchanger 5. After the temperature drops, it is input from the primary side return water pipe 6 into the condensing wall-hung boiler 2 for heating. The flue gas discharged by the condensing wall-hung boiler 2 during heating enters the white smoke elimination heat exchange chamber 11 through the flue gas collection pipe 10. The white smoke elimination fan 12 draws outdoor air into the white smoke elimination heat exchange chamber 11 and exchanges heat with the flue gas in the white smoke elimination heat exchange chamber 11. After the flue gas temperature drops, it is discharged from the exhaust port 14 through the exhaust pipe 13, so that white smoke cannot be seen outside the skid frame 1.
[0019] Among them, several condensing wall-hung boilers 2 are connected in parallel, and each condensing wall-hung boiler 2 operates independently. When a single condensing wall-hung boiler 2 fails, the other condensing wall-hung boilers 2 can operate normally without affecting the operation of the overall heating system, thus ensuring the continuity and stability of heating.
[0020] When the temperature sensor detects that the water temperature is lower than the set value, it transmits the signal to the antifreeze controller. The antifreeze controller controls the water pumps associated with each condensing wall-hung boiler 2 to run intermittently to prevent the equipment from freezing. When a condensing wall-hung boiler 2 malfunctions and stops running, its associated water pump stops accordingly under the control of the antifreeze controller to avoid energy loss. At the same time, other antifreeze controllers operate normally and do not affect the operation of the overall heating system.
[0021] The condensing wall-hung boiler 2 can be fixedly installed on the mounting frame 15, which facilitates the installation and disassembly of the condensing wall-hung boiler 2. The appropriate condensing wall-hung boiler 2 can be installed according to actual usage needs, thereby avoiding the decrease in thermal efficiency caused by too many devices operating at low load at the same time, and reducing the subsequent gas and electricity consumption costs.
[0022] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.
Claims
1. A gas-fired wall-hung boiler skid structure for a heating system, comprising a skid frame (1), characterized in that: The skid frame (1) is equipped with several condensing wall-hung boilers (2) connected in parallel. The output ends of the several condensing wall-hung boilers (2) are connected to water supply pipes (3). The output ends of the water supply pipes (3) are connected to primary side inlet pipes (4). The output ends of the primary side inlet pipes (4) are connected to plate heat exchangers (5). One side of the bottom of the plate heat exchangers (5) is connected to a primary side return pipe (6). The output end of the primary side return pipes (6) is connected to a return pipe (7). The output end of the return pipe (7) is connected to the condensing wall-hung boilers (2). The other side of the bottom of the plate heat exchangers (5) is equipped with... There is a secondary side return water pipe (8), and the plate heat exchanger (5) has a secondary side supply water pipe (9) installed on the upper side of the secondary side return water pipe (8). A flue gas heat exchange assembly is installed on one side of the skid frame (1). The flue gas heat exchange assembly includes a flue gas collection pipe (10). The input end of the flue gas collection pipe (10) is connected to the flue gas outlet of the condensing wall-hung boiler (2). The output end of the flue gas collection pipe (10) is connected to a whitening heat exchange chamber (11). A whitening fan (12) is installed at the bottom of the whitening heat exchange chamber (11). The output end of the whitening heat exchange chamber (11) is connected to an exhaust pipe (13).
2. The gas-fired wall-hung boiler skid structure for a heating system according to claim 1, characterized in that: The input end of the whitening blower (12) is connected to the outside air.
3. The gas-fired wall-hung boiler skid structure for a heating system according to claim 2, characterized in that: The condensing wall-hung boiler (2) is connected to a water pump. The input end of the water pump is equipped with a temperature sensor. The temperature sensor is connected to an antifreeze controller, which is connected to the water pump.
4. The gas-fired wall-hung boiler skid structure for a heating system according to claim 3, characterized in that: The end of the exhaust pipe (13) extends to the outside of the skid frame (1) to form an exhaust port (14).
5. A gas-fired wall-hung boiler skid structure for a heating system according to claim 4, characterized in that: An assembly rack (15) is fixedly installed inside the skid frame (1), and several condensing wall-hung boilers (2) are fixedly installed on the assembly rack (15). The number of several condensing wall-hung boilers (2) can be customized according to actual heating needs.