Gas boiler with heat recovery function

Abstract

The utility model discloses a gas-fired boiler with a heat recovery function, and belongs to the technical field of heat recovery of gas-fired boilers. Comprising a boiler body, a supporting table is fixedly arranged above the boiler body, and a heat recovery box and a filter box are fixedly arranged on the supporting table; a heat recovery pipe connected with the heat recovery box is arranged on the boiler body; a heat exchange plate is fixedly arranged in the heat recovery box, and a water temperature sensor is arranged in the heat recovery box; a heat recovery adjusting structure is arranged in the heat recovery box; a groove is formed in the filter box, a rotating plate is rotationally arranged in the groove, and a plurality of filter structures are arranged on the rotating plate. The heat recovery adjusting structure and the water temperature sensor are arranged, the heat recovery amount can be reduced when the water temperature is too high, and the situation that use is affected by the too high water temperature is avoided; meanwhile, the multiple filtering structures are arranged on the same rotating plate, the filtering structures can be replaced rapidly and conveniently through rotation of the rotating plate, and the filtering process cannot be delayed.

Description

Technical Field

[0001] The utility model provides a gas boiler with a heat recovery function, belonging to the technical field of heat recovery of gas boilers. Background Technique

[0002] With the development of social economy and the increasing tension of energy resources, as an important heating equipment, the energy utilization efficiency and environmental protection performance of gas boilers have become the focus of people's attention. For example, a large amount of heat energy still remains in the flue gas and is not effectively utilized, and direct emission leads to waste of energy.

[0003] The existing technology can recover the heat in the flue gas by setting a heat recovery device, and set a filtering device to filter the impurities in the flue gas before discharging, which can not only reduce the waste of energy, but also avoid the dust in the flue gas from affecting the external environment. However, the flue gas and the heat in the flue gas in the boiler are often uncontrollable. Therefore, when using a heat exchange medium for heat recovery, when the heat of the flue gas continues to be too high, it is easy to cause the heat exchange medium to heat up too fast and have a high temperature, affecting the normal use of the heat exchange medium. At the same time, when filtering the soot in the flue gas after heat recovery, the filter screen often needs to be replaced, which is time-consuming and laborious, and easily delays the filtering process. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is that when heat is recovered from a gas boiler, it is not easy to control the temperature of the heat exchange medium, which easily leads to too high a temperature of the heat exchange medium and affects its use. At the same time, frequent replacement of the filter screen is time-consuming and laborious, and easily delays the filtering process.

[0005] In order to solve the above problems, the technical solution proposed by the utility model is: a gas boiler with a heat recovery function, including a support base, in which a boiler body is fixedly placed; a support platform is fixedly arranged above the boiler body, and a heat recovery box and a filtration box are fixedly arranged on the support platform; a water inlet hole is opened on the heat recovery box, an air outlet pipe is connected to one side of the filtration box, and the heat recovery box and the filtration box are communicated through a connecting pipe; a heat recovery pipe connected to the heat recovery box is arranged on the boiler body; a heat exchange plate is fixedly arranged in the heat recovery box, and a water temperature sensor is arranged above the heat exchange plate in the heat recovery box; a heat recovery adjustment structure is arranged below the heat exchange plate in the heat recovery box; a groove is opened in the filtration box, and a rotating plate is rotatably arranged in the groove; a plurality of filtering structures are arranged on the rotating plate.

[0006] As an improvement, the heat recovery adjustment structure includes a heat insulation frame, and the heat insulation frame is slidably arranged in the heat recovery box; an electric telescopic rod is arranged on one side of the heat recovery box, and the working end of the electric telescopic rod is fixedly connected to the heat insulation frame; an outflow pipe corresponding to the heat exchange plate is connected to the heat recovery box.

[0007] As an improvement, the heat insulation frame corresponds to the end of the connecting pipe. A connecting hole communicating with the heat recovery pipe is provided in the heat recovery box, and the position of the connecting hole corresponds to that of the heat insulation frame; there is a gap between the heat insulation frame and the heat exchange plate.

[0008] As an improvement, a controller circuit - connected to the water temperature sensor is provided on one side of the heat recovery box, and the controller is circuit - connected to the electric telescopic rod; an alarm horn is provided on the side wall of the heat recovery box, and the alarm horn is circuit - connected to the controller.

[0009] As an improvement, the filtering structure includes a filter net. There are four filtering structures, and the four filter nets are circumferentially distributed on the rotating plate, and one of the filtering structures is located in the filtering box.

[0010] As an improvement, a motor is provided on the filtering box, and a rotating shaft is fixedly connected to the output shaft of the motor; the rotating shaft is fixedly connected to the rotating plate.

[0011] The beneficial effects of the present utility model:

[0012] 1. A water temperature sensor is provided in the recovery box. The water temperature sensor can be used to monitor the water temperature in the heat recovery box. When it is found that the water temperature is too high, the heat recovery adjustment structure is controlled by the controller to reduce the heat recovery amount, thereby avoiding the influence on use due to too high water temperature.

[0013] 2. A groove is provided in the filtering box, and a rotating plate is rotatably arranged in the groove. A plurality of filtering structures are provided on the rotating plate; by arranging a plurality of filtering structures on the same rotating plate, the replacement of the filtering structures can be completed by the rotation of one rotating plate, which is fast and convenient and does not delay the filtering process. Description of the Drawings

[0014] Figure 1 It is a three - dimensional view of a gas boiler with a heat recovery function according to the present utility model.

[0015] Figure 2 It is a three - dimensional view of another perspective of a gas boiler with a heat recovery function according to the present utility model.

[0016] Figure 3 It is a cross - sectional view of the heat recovery box of a gas boiler with a heat recovery function according to the present utility model.

[0017] Figure 4 It is a cross - sectional view of another perspective of the heat recovery box of a gas boiler with a heat recovery function according to the present utility model.

[0018] Figure 5 It is a cross - sectional view of the filtering box of a gas boiler with a heat recovery function according to the present utility model.

[0019] 1. Support base; 2. Boiler body; 3. Support platform; 4. Filter box; 5. Controller; 6. Connecting pipe; 7. Water inlet hole; 8. Heat recovery box; 9. Alarm horn; 10. Outlet pipe; 11. Heat recovery pipe; 12. Electric telescopic rod; 13. Heat insulation frame; 14. Connecting hole; 15. Heat exchange plate; 16. Water temperature sensor; 17. Motor; 18. Rotating shaft; 19. Rotating plate; 20. Filter screen; 21. Groove; 22. Exhaust pipe. Detailed implementation

[0020] The present utility model will be further described below with reference to the accompanying drawings.

[0021] According to Figures 1-5 As shown in the figure: The present utility model provides a gas boiler with a heat recovery function, including a support base 1, in which a boiler body 2 is fixedly placed; a support platform 3 is fixedly arranged above the boiler body 2, and a heat recovery box 8 and a filter box 4 are fixedly arranged on the support platform 3; a water inlet hole 7 is opened on the heat recovery box 8, one side of the filter box 4 is connected with an exhaust pipe 22, and the heat recovery box 8 and the filter box 4 are communicated through a connecting pipe 6; a heat recovery pipe 11 connected to the heat recovery box 8 is arranged on the boiler body 2; a heat exchange plate 15 is fixedly arranged in the heat recovery box 8, and a water temperature sensor 16 is arranged above the heat exchange plate 15 in the heat recovery box 8; a heat recovery adjustment structure is arranged below the heat exchange plate 15 in the heat recovery box 8; a groove 21 is opened in the filter box 4, and a rotating plate 19 is rotatably arranged in the groove 21; a plurality of filtering structures are arranged on the rotating plate 19.

[0022] By setting the heat recovery adjustment structure and the water temperature sensor 16, the heat recovery amount can be reduced when the water temperature is too high, avoiding the influence of too high water temperature on the use; at the same time, a plurality of filtering structures are arranged on the same rotating plate 19, and the replacement of the filtering structures can be completed by the rotation of the rotating plate 19, which is fast and convenient and will not delay the filtering process.

[0023] Such as Figure 3 、 4As shown in the figure, the heat recovery adjustment structure includes a heat insulation frame 13, and the heat insulation frame 13 is slidably arranged in the heat recovery box 8; an electric telescopic rod 12 is arranged on one side of the heat recovery box 8, and the working end of the electric telescopic rod 12 is fixedly connected to the heat insulation frame 13; an outlet pipe 10 corresponding to the heat exchange plate 15 is connected to the heat recovery box 8. The electric telescopic rod 12 can provide power for the sliding of the heat insulation frame 13, and the heat insulation frame 13 can play a role in heat insulation. The heat insulation frame 13 corresponds to the end of the connecting pipe 6. A connecting hole 14 communicating with the heat recovery pipe 11 is arranged in the heat recovery box 8, and the connecting hole 14 corresponds to the position of the heat insulation frame 13. When the heat insulation frame 13 slides, it can cover the connecting hole 14 and the end of the connecting pipe 6 at the same time, so that the flue gas directly enters the connecting pipe 6 from the connecting hole 14 without contacting the heat exchange plate 15, thereby reducing the heat recovery amount; there is a gap between the heat insulation frame 13 and the heat exchange plate 15 to avoid the heat insulation frame 13 contacting the heat exchange plate 15 during normal heat recovery and affecting the heat exchange process of the heat exchange plate 15.

[0024] A controller 5 circuit-connected to the water temperature sensor 16 is arranged on one side of the heat recovery box 8, and the controller 5 is circuit-connected to the electric telescopic rod 12, and can drive the electric telescopic rod 12 to work according to the monitoring result of the water temperature sensor 16; an alarm horn 9 is arranged on the side wall of the heat recovery box 8, and the alarm horn 9 is circuit-connected to the controller 5 and can give an alarm to remind the staff.

[0025] As Figure 5 shown in the figure, the filtering structure includes a filter net 20. There are four filtering structures, and the four filter nets 20 are circumferentially distributed on the rotating plate 19, and one of the filtering structures is located in the filter box 4. A motor 17 is arranged on the filter box 4, and a rotating shaft 18 is fixedly connected to the output shaft of the motor 17; the rotating shaft 18 is fixedly connected to the rotating plate 19. When the motor 17 and the rotating shaft 18 drive the rotating plate 19 to rotate, the replacement of the filtering structure can be quickly completed.

[0026] The principle of the present utility model

[0027] As Figures 1-2 shown in the figure, when the present application is in normal use, the flue gas coming out of the boiler body 2 enters the heat recovery box 8 through the heat recovery pipe 11, after heat exchange in the heat recovery box 8, it enters the filter box 4 through the connecting pipe 6, and after being filtered by the filtering structure, it is discharged through the outlet pipe 22.

[0028] As Figures 3-4As shown in the figure, water serving as a heat exchange medium is stored in the heat recovery box 8 above the heat exchange plate 15. When the flue gas enters the heat recovery box 8 from the connection hole 14, the heat in the flue gas exchanges heat with the heat exchange plate 15, transferring the heat to the water and heating the water. When the water temperature sensor 16 senses that the water temperature is too high, the controller 5 transmits a signal to the electric telescopic rod 12 to control the start of the electric telescopic rod 12, driving the heat insulation frame 13 to slide until both the connection hole 14 and the end of the connecting pipe 6 are located within the heat insulation frame 13. At this time, the hot gas entering from the connection hole 14 does not contact the heat exchange plate 15 but directly enters the filter box 4 through the connecting pipe 6 and is discharged after filtration. At the same time, the controller 5 can control the alarm horn 9 to start, giving an alarm for the too-high water temperature to remind the staff, and the staff can discharge the water through the outflow pipe 10.

[0029] As Figure 5 shown in the figure, the flue gas entering the filter box 4 from the connecting pipe 6 is discharged after being filtered by the filter net 20. When the filter net 20 is blocked due to long-term use, the motor 17 is directly started to drive the rotating plate 19 to rotate, so that another set of filtering structures replaces the original filtering structure. Without disassembling and installing the filtering structure, the replacement of the filtering structure is completed quickly and conveniently, and the filtering process will not be delayed.

[0030] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative concept of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. A gas boiler with a heat recovery function, comprising a support base (1), a boiler body (2) being fixedly placed in the support base (1); a support platform (3) being fixedly arranged above the boiler body (2), a heat recovery box (8) and a filter box (4) being fixedly arranged on the support platform (3); a water inlet (7) being provided on the heat recovery box (8), an air outlet pipe (22) being connected to one side of the filter box (4), and the heat recovery box (8) and the filter box (4) being connected via a connecting pipe (6); a heat recovery pipe (11) connected to the heat recovery box (8) being arranged on the boiler body (2); characterized in that: A heat exchange plate (15) is fixedly arranged in the heat recovery box (8), and a water temperature sensor (16) is arranged in the heat recovery box (8) and is located above the heat exchange plate (15); a heat recovery adjustment structure is arranged in the heat recovery box (8) and is located below the heat exchange plate (15); a groove (21) is provided in the filter box (4), and a rotating plate (19) is rotatably arranged in the groove (21); and a plurality of filtering structures are arranged on the rotating plate (19).

2. A gas boiler with heat recovery function according to claim 1, characterized in that: The heat recovery regulating structure comprises a heat insulation frame (13), and the heat insulation frame (13) is slidably arranged in a heat recovery box (8); an electric telescopic rod (12) is arranged on one side of the heat recovery box (8), and the working end of the electric telescopic rod (12) is fixedly connected to the heat insulation frame (13); and an outlet pipe (10) corresponding to the heat exchange plate (15) is connected to the heat recovery box (8).

3. The gas boiler with heat recovery function according to claim 2, characterized in that: The heat insulation frame (13) corresponds to the end of the connecting pipe (6); a connecting hole (14) communicating with the heat recovery pipe (11) is provided in the heat recovery box (8); and the connecting hole (14) corresponds to the position of the heat insulation frame (13); and a gap exists between the heat insulation frame (13) and the heat exchange plate (15).

4. The gas boiler with heat recovery function according to claim 3, characterized in that: A controller (5) connected to a water temperature sensor (16) is provided on one side of the heat recovery box (8), and the controller (5) is connected to the electric telescopic rod (12) in a circuit; an alarm speaker (9) is provided on a side wall of the heat recovery box (8), and the alarm speaker (9) is connected to the controller (5) in a circuit.

5. The gas boiler with heat recovery function according to claim 1, characterized in that: The filter structure comprises a filter screen (20), four of which are provided, the four filter screens (20) are circumferentially distributed on the rotating plate (19), and one of the filter structures is located in the filter box (4).

6. The gas boiler with heat recovery function according to claim 5, characterized in that: The filter box (4) is provided with a motor (17), and a rotating shaft (18) is fixedly connected to the output shaft of the motor (17); the rotating shaft (18) is fixedly connected to the rotating plate (19).

Images