Flue gas waste heat recovery heat pump heat conduction device
By designing a structure in the heat conduction device that disperses the flow of heat conduction medium and flue gas, and combining it with a spiral heat conduction pipe and flushing components, the problems of poor heat conduction and difficult cleaning in existing devices are solved, achieving efficient waste heat recovery from flue gas and convenient cleaning.
Patent Information
- Application Number
- CN202422715834.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-08
AI Technical Summary
Existing serpentine copper tube heat pump heat transfer devices have poor heat transfer performance in flue gas, and dust easily adheres to them and is difficult to clean, resulting in low efficiency of flue gas waste heat recovery.
A heat pump heat transfer device for waste heat recovery from flue gas was designed. The heat transfer medium and flue gas are dispersed and flow in the annular gap of the heat transfer pipe and the flue pipe. The flue pipe is used to guide the flushing water. The heat transfer pipe is spiral-shaped and is combined with the flushing components for cleaning, which enhances the heat transfer efficiency and cleaning convenience.
It improves the efficiency of heat transfer by the flue gas enveloping the heat-conducting medium, enhances the heat conduction effect, facilitates the cleaning of the heat-conducting pipe, and improves the efficiency of flue gas waste heat recovery.
Smart Images
Figure CN223610641U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of waste heat recovery, specifically to flue gas waste heat recovery heat pump heat conduction device. BACKGROUND
[0002] It is known that a large amount of heat is contained in flue gas, and flue gas waste heat recovery has significant economic value, and flue gas waste heat recovery heat pumps are widely used in various scenes requiring efficient recovery of flue gas waste heat, especially in gas boilers and heating systems, which can significantly improve energy utilization efficiency, reduce energy consumption and environmental pollution, and heat pumps generally absorb heat from flue gas through heat conduction devices, the existing heat pump heat conduction devices are generally made of coiled copper pipes, which are placed in flue gas for heat exchange, have simple structure and low use cost, flue gas passes through the gaps of the coiled pipes, the wrapping of flue gas on the coiled pipes is poor, and dust in the flue gas is easily attached to the surface of the coiled pipes, which is difficult to clean, and thus the heat conduction effect is poor. SUMMARY
[0003] The utility model solves the technical problem of overcoming the existing defects, and provides a flue gas waste heat recovery heat pump heat conduction device, the heat conduction medium and the flue gas flow in the heat conduction pipe and the annular gap of the exhaust pipe, the flue gas wraps the heat conduction medium, and the heat transfer efficiency is high, and the exhaust pipe can guide the washing water, the heat conduction pipe is easy to clean, and thus the flue gas waste heat recovery heat pump heat conduction device has good heat conduction effect, and can effectively solve the problems in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme: a flue gas waste heat recovery heat pump heat conduction device, comprising a flue gas pipe;
[0005] The upper end of the flue gas pipe is fixedly connected with the lower end of the lower smoke box, the exhaust pipes are arranged at the smoke outlet holes on the upper surface of the lower smoke box, the upper ends of the exhaust pipes are fixedly connected with the lower end of the upper smoke box, the interiors of the lower smoke box and the upper smoke box are provided with medium shells, the heat conduction pipes are uniformly distributed between the two medium shells and pass through the exhaust pipes, the liquid inlet pipes are arranged at the liquid inlet holes on the upper surface of the medium shell on the side, the liquid inlet pipes extend out of the exterior of the upper smoke box, the liquid outlet pipes are arranged at the liquid outlet holes on the lower surface of the medium shell on the side, the liquid outlet pipes extend out of the exterior of the lower smoke box, the interior of the upper smoke box is provided with a washing assembly, the washing assembly is arranged in cooperation with the exhaust pipe, the exhaust pipe disperses the flue gas into multiple flows, the heat conduction medium and the flue gas flow in the heat conduction pipe and the annular gap of the exhaust pipe, the flue gas wraps the heat conduction medium, and the heat transfer efficiency is high, and the exhaust pipe can guide the washing water, the heat conduction pipe is easy to clean, and thus the flue gas waste heat recovery heat pump heat conduction device has good heat conduction effect.
[0006] Further, the heat conduction pipe is a spiral heat conduction pipe, and the exhaust pipe is a spiral exhaust pipe, which prolongs the length of the flow channel and improves the heat exchange area.
[0007] Further, the flushing assembly comprises a water inlet pipe, a flushing nozzle and a cleaning ring, the cleaning ring is arranged at the lower end of the upper smoke box, the flushing nozzles are arranged at the water outlet holes of the lower surface of the cleaning ring, the lower ends of the flushing nozzles extend to the inside of the smoke exhaust pipe, the water inlet pipe is arranged on the outer arc surface of the cleaning ring, and the right end of the water inlet pipe extends out of the upper smoke box, so that the heat conducting pipe can be cleaned.
[0008] Further, the pollution discharge hole of the lower surface of the lower smoke box is provided with a pollution discharge pipe, and the middle part of the pollution discharge pipe is connected with a valve, so that the cleaning water is conveniently discharged.
[0009] Further, the middle part of the lower smoke box is provided with a flow guide cone which is located above the smoke gas pipe, so that the cleaning water falls into the inside of the smoke gas pipe.
[0010] Further, the flow guide cover is arranged on the lower surface of the lower side medium shell through the heat conducting column, and the smoke gas is guided to the center.
[0011] Further, the lower smoke box, the smoke exhaust pipe and the external fixed sleeve of the whole lower smoke box are provided with a heat preservation sleeve, so that the heat loss is reduced.
[0012] Compared with the prior art, the beneficial effects of the smoke gas waste heat recovery heat pump heat conducting device are as follows.
[0013] The smoke exhaust pipe disperses the smoke gas into multiple flows, the heat conducting medium and the smoke gas flow in the heat conducting pipe and the smoke exhaust pipe annular gap, the smoke gas wraps the heat conducting medium, the heat transfer efficiency is high, the smoke exhaust pipe can guide the flushing water, the heat conducting pipe is convenient to clean, and the smoke gas waste heat recovery heat pump heat conducting device has good heat conducting effect. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a structural schematic view of the utility model;
[0015] Figure 2 It is a sectional view structural schematic view of the smoke gas pipe of the utility model;
[0016] Figure 3 It is an enlarged structural schematic view of A of the utility model;
[0017] Figure 4 It is an enlarged structural schematic view of B of the utility model.
[0018] In the drawing: 1 upper smoke box, 2 smoke exhaust pipe, 3 lower smoke box, 4 smoke gas pipe, 5 medium shell, 6 heat conducting pipe, 7 liquid outlet pipe, 8 liquid inlet pipe, 9 cleaning ring, 10 water inlet pipe, 11 flushing nozzle, 12 flow guide cone, 13 pollution discharge pipe, 14 valve, 15 flow guide cover, 16 heat preservation sleeve. DETAILED DESCRIPTION
[0019] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0020] Please refer to Figures 1-4 The embodiment provides a technical scheme: a flue gas waste heat recovery heat pump heat conduction device, comprising a flue gas pipe 4;
[0021] The upper end of the flue gas pipe 4 is fixedly connected with the lower end of the lower smoke box 3, the upper surface of the lower smoke box 3 is provided with smoke exhaust pipes 2 at smoke outlet holes, the upper ends of the smoke exhaust pipes 2 are fixedly connected with the lower end of the upper smoke box 1, the flue gas pipe 4 is connected with a flue, flue gas flows into the smoke exhaust pipes 2 from the flue gas pipe 4 and the lower smoke box 3, the inside of the lower smoke box 3 and the upper smoke box 1 is provided with medium shells 5, the two medium shells 5 are provided with uniformly distributed heat conducting pipes 6, the heat conducting pipes 6 are red copper heat conducting pipes, the heat conducting pipes 6 pass through the smoke exhaust pipes 2, flue gas flows upwards while wrapping the heat conducting pipes 6, the flue gas heats the heat pump medium through the heat conducting pipes 6, and waste heat is recycled; liquid inlet pipes 8 are arranged at liquid inlet holes in the upper surface of the medium shell 5 on the side, the liquid inlet pipes 8 extend out of the outside of the upper smoke box 1, the heat pump medium enters the inside of the heat conducting pipes 6 from the liquid inlet pipes 8 and the medium shell 5 above, liquid outlet pipes 7 are arranged at liquid outlet holes in the lower surface of the medium shell 5 below, the liquid outlet pipes 7 extend out of the outside of the lower smoke box 3, the heat pump medium after being heated is discharged from the medium shell 5 below and the liquid outlet pipes 7, flue gas after heat exchange is discharged from the upper smoke box 1, the inside of the upper smoke box 1 is provided with a flushing assembly, the flushing assembly is arranged in cooperation with the smoke exhaust pipes 2, the heat conducting pipes 6 are spiral heat conducting pipes, the smoke exhaust pipes 2 are spiral smoke exhaust pipes, the flow path is lengthened, the flushing assembly comprises water inlet pipes 10, flushing nozzles 11 and a cleaning ring 9, the cleaning ring 9 is arranged at the lower end in the inside of the upper smoke box 1, flushing nozzles 11 are arranged at water outlet holes in the lower surface of the cleaning ring 9, the lower ends of the flushing nozzles 11 extend to the inside of the smoke exhaust pipes 2, water inlet pipes 10 are arranged on the outer arc surface of the cleaning ring 9, the right ends of the water inlet pipes 10 extend out of the outside of the upper smoke box 1, water flows into the inside of the cleaning ring 9 through the water inlet pipes 10, the water in the cleaning ring 9 is sprayed into the inside of the smoke exhaust pipes 2 through the flushing nozzles 11, and then the water flow cleans the outer surface of the heat conducting pipes 6 and the inside of the smoke exhaust pipes 2, waste water flows out of the lower ends of the smoke exhaust pipes 2, a sewage pipe 13 is arranged at a sewage outlet hole in the lower surface of the lower smoke box 3, the upper end of the flue gas pipe 4 is higher than the sewage pipe 13, so that waste water can be discharged from the sewage pipe 13, a valve 14 is connected in series at the middle of the sewage pipe 13, the valve 14 controls the opening and closing of the sewage pipe 13, a flow guide cone 12 is arranged at the middle of the lower smoke box 3, the flow guide cone 12 is located above the flue gas pipe 4, the flow guide cone 12 shields the flue gas pipe 4 and guides the water flow, and then the waste water flows into the lower part of the lower smoke box 3, and the application further comprises a flow guide cover 15, the flow guide cover 15 is arranged on the lower surface of the medium shell 5 on the side through a heat conducting column, the heat conducting column is a yellow copper heat conducting column, the flow guide cover 15 promotes the flue gas to gather at the center, and the flue gas inflow of the smoke exhaust pipe 2 at the center is improved, the outside of the lower smoke box 3, the smoke exhaust pipes 2 and the lower smoke box 3 as a whole is provided with a heat preservation sleeve 16, the heat preservation sleeve 16 is an aluminum silicate cotton heat preservation sleeve, and the heat preservation sleeve 16 can reduce the loss of flue gas heat.
[0022] The working principle of the heat conduction device of the flue gas waste heat recovery heat pump is as follows: when in use, the liquid inlet pipe 8 is connected with the discharge end of the flue gas waste heat recovery heat pump system medium, the liquid outlet pipe 7 is connected with the liquid inlet end of the flue gas waste heat recovery heat pump system medium, and then in the use process, the heat pump medium enters the inside of the heat conduction pipe 6 from the liquid inlet pipe 8 and the upper medium shell 5, the flue gas pipe 4 is connected with the flue, the flue gas flows into the inside of the smoke exhaust pipe 2 from the flue gas pipe 4 and the lower smoke box 3, and then the flue gas wrapped around the heat conduction pipe 6 flows upwards, the flue gas heats the heat pump medium through the heat conduction pipe 6, the waste heat is recovered, then the heated heat pump medium is discharged from the lower medium shell 5 and the liquid outlet pipe 7, the flue gas after heat exchange is discharged from the upper flue gas box 1, when there is no flue gas, the valve 14 is opened, the external cleaning pump is connected with the water inlet pipe 10, the water flow enters the inside of the cleaning ring 9 through the water inlet pipe 10, the water flow in the cleaning ring 9 is sprayed into the inside of the smoke exhaust pipe 2 through the flushing nozzle 11, and then the water flow cleans the outer surface of the heat conduction pipe 6 and the inside of the smoke exhaust pipe 2, the waste water flows out from the lower end of the smoke exhaust pipe 2, the flow cone 12 shields the flue gas pipe 4 and guides the water flow, then the waste water flows into the lower side of the lower smoke box 3, and the upper end of the flue gas pipe 4 is higher than the blow-off pipe 13, so that the waste water can be discharged from the blow-off pipe 13.
[0023] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion or direct or indirect application in other related technical fields is also included in the patent protection range of the utility model.
Claims
1. A flue gas heat recovery heat pump heat conducting device, characterized in that: The smoke pipe (4) is fixedly connected with the lower end of the lower smoke box (3). The upper end of the smoke pipe (4) is fixedly connected with the lower end of the lower smoke box (3), the upper surface of the lower smoke box (3) is provided with smoke exhaust pipes (2), the upper end of the smoke exhaust pipe (2) is fixedly connected with the lower end of the upper smoke box (1), the inside of the lower smoke box (3) and the upper smoke box (1) is provided with a medium shell (5), the two medium shells (5) are provided with uniformly distributed heat conducting pipes (6), the heat conducting pipe (6) passes through the smoke exhaust pipe (2), the upper surface of the medium shell (5) is provided with a liquid inlet pipe (8), the liquid inlet pipe (8) extends out of the upper smoke box (1), the lower surface of the medium shell (5) is provided with a liquid outlet pipe (7), the liquid outlet pipe (7) extends out of the lower smoke box (3), the inside of the upper smoke box (1) is provided with a flushing assembly, and the flushing assembly is arranged in the smoke exhaust pipe (2).
2. The flue gas waste heat recovery heat pump heat conducting device according to claim 1, characterized in that: The heat conducting pipe (6) is a spiral heat conducting pipe, and the smoke exhaust pipe (2) is a spiral smoke exhaust pipe.
3. The flue gas waste heat recovery heat pump heat conducting device according to claim 1, characterized in that: The flushing assembly comprises a water inlet pipe (10), a flushing nozzle (11) and a cleaning ring (9), the cleaning ring (9) is arranged at the lower end of the inside of the upper smoke box (1), the lower surface of the cleaning ring (9) is provided with a flushing nozzle (11), the lower end of the flushing nozzle (11) extends into the inside of the smoke exhaust pipe (2), the outer arc surface of the cleaning ring (9) is provided with a water inlet pipe (10), and the right end of the water inlet pipe (10) extends out of the outside of the upper smoke box (1).
4. The flue gas waste heat recovery heat pump heat conducting device according to claim 1, characterized in that: The lower surface of the lower smoke box (3) is provided with a blowdown pipe (13), and the middle part of the blowdown pipe (13) is connected with a valve (14).
5. The flue gas waste heat recovery heat pump heat conducting device according to claim 1, characterized in that: The middle part of the lower smoke box (3) is provided with a flow guide cone (12), and the flow guide cone (12) is located above the smoke pipe (4).
6. The flue gas waste heat recovery heat pump heat conducting device according to claim 1, characterized in that: The lower surface of the lower smoke box (3) is provided with a flow guide cone (12), and the flow guide cone (12) is located above the smoke pipe (4).
7. The flue gas waste heat recovery heat pump heat conducting device according to claim 1, characterized in that: The lower surface of the lower smoke box (3) is provided with a flow guide cone (12), and the flow guide cone (12) is located above the smoke pipe (4). The lower surface of the lower smoke box (3) is provided with a flow guide cone (12), and the flow guide cone (12) is located above the smoke pipe (4). The lower surface of the lower smoke box (3) is provided with a flow guide cone (12), and the flow guide cone (12) is located above the smoke pipe (4).