Direct-fired heating device with waste heat recovery for chicken farm

Abstract

The utility model discloses a direct-fired heating device of chicken farm with waste heat recovery, including the heating air while guiding its flow's temperature rising subassembly temperature rising subassembly top is provided with the heat exchange component for the isolation of fresh air to avoid pollution, the heat exchange component middle is provided with the clean component of driving of exhaust energy utilization, the utility model discloses, through the engine drive heat conduction rod rotation, make the sleeve lift under the constraint of spacing block and cleaning ring, and the sponge pad is cleaned to the heat exchange tube surface, prevent the heat exchange tube surface adhesion soot and influence the heat exchange efficiency, through the waste heat of combustion and heat the heat input end of stirling engine, and stirling engine can through heat conversion mechanical power to drive heat conduction rod and rotate, need not additional installation motor, reduce operating cost, in the flue gas pipe, utilize hot air flow and heat the fresh air of going into the chicken farm, guarantee heat recovery efficiency while make fresh air complete isolation and avoid cross -contamination, improve the air quality in the chicken farm.

Description

Technical Field

[0001] This utility model belongs to the technical field of heating devices, and in particular relates to a direct-fired heating device for chicken farms with waste heat recovery. Background Technology

[0002] Chicken house heating is a core aspect of environmental control in livestock and poultry farming. It directly affects not only the growth rate and health of poultry but also the energy consumption and operating costs of the farm. Especially during the high-density brooding stage, it is necessary to maintain a high temperature of 38°C while ensuring fresh air. In the early days, farms commonly used stationary stoves, heated floors, or ordinary furnaces for static heating. These devices could not simultaneously achieve ventilation during operation, leading to the accumulation of harmful gases such as ammonia and carbon dioxide in the shed. The oxygen-deficient environment easily caused carbon monoxide poisoning in chicks, and uncontrolled humidity led to floating disease or respiratory illnesses, resulting in frequent diarrhea.

[0003] Traditional heating methods suffer from problems such as low heat exchange efficiency, uneven temperature, and poor air quality. However, the emergence of direct-fired heating combined with waste heat recovery technology provides a systematic solution to these pain points. In existing technologies, heat exchange components are in a flue gas environment containing heat, and their surfaces quickly become covered with a large amount of dust, which seriously affects the subsequent heat exchange effect and causes the energy utilization rate to drop significantly after the device has been running for a period of time. Utility Model Content

[0004] The purpose of this invention is to provide a direct-fired heating device for chicken farms with waste heat recovery, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A direct-fired heating device for chicken farms with waste heat recovery includes a heating component for heating air and guiding its flow. The top of the heating component is equipped with a heat exchange component to isolate fresh air and prevent contamination. A cleaning component driven by exhaust air energy is located in the middle of the heat exchange component. The cleaning component includes a support frame, with a Stirling engine that converts thermal energy into mechanical energy mounted on the top of the support frame. A heat-conducting rod is located at the power end of the Stirling engine, and a strip-shaped limiting block is provided on the heat-conducting rod. A sleeve is slidably mounted on the heat-conducting rod, and a cleaning ring is fixedly mounted on one side of the outer wall of the sleeve.

[0006] Optionally, the heating component includes a direct combustion chamber, an oxygen supply pipe vertically arranged at the bottom of the direct combustion chamber, a blower installed at the bottom of the oxygen supply pipe, a flue gas pipe arranged at the top of the direct combustion chamber, a heat insulation layer arranged on the inner wall of the direct combustion chamber, a biomass pellet burner installed on the right side of the direct combustion chamber, and a fireproof board arranged in the direct combustion chamber.

[0007] Optionally, the heat exchange assembly includes an air inlet pipe, one end of which is connected to a spiral heat exchange tube, and the top end of the heat exchange tube is connected to a ventilation pipe.

[0008] Optionally, the fireproof plate is arranged perpendicular to the oxygen supply pipe and located above the biomass pellet burner. The fireproof plate divides the internal space of the direct combustion chamber into an air heating zone and a flow guiding channel. The air heating zone is connected to the oxygen supply pipe, and the flow guiding channel is connected to the flue gas pipe.

[0009] Optionally, the heat-conducting rod extends through the flue gas pipe.

[0010] Optionally, the air intake pipe passes through the direct combustion chamber, and the heat exchange pipe is located inside the flue gas pipe.

[0011] Optionally, a groove is provided on the inner side of the sleeve, and the limiting block is slidably connected to the inner wall of the groove.

[0012] Optionally, the cleaning ring is fitted onto the heat exchange tube, and a sponge pad is provided on its inner side.

[0013] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the heat-conducting rod is rotated by the engine, so that the sleeve is raised and lowered under the constraint of the limiting block and the cleaning ring. At the same time, the sponge pad cleans the surface of the heat exchange tube to prevent soot from adhering to the surface of the heat exchange tube and affecting the heat exchange efficiency. In this invention, the heat that is not absorbed in the flue gas pipe is transferred through the heat-conducting rod, so that the residual heat of combustion heats the heat input end of the Stirling engine. The Stirling engine can convert the heat into mechanical power to drive the heat-conducting rod to rotate, eliminating the need for an additional motor and reducing operating costs. In this invention, hot air is used in the flue to heat the fresh air introduced into the chicken farm, ensuring heat recovery efficiency while completely isolating the fresh air to avoid cross-contamination and improving the air quality in the chicken farm. Attached Figure Description

[0014] Figure 1 This is a side sectional view of a direct-fired heating device for chicken farms with waste heat recovery as described in this utility model; Figure 2 This is a schematic diagram of the structure of a direct-fired heating device for chicken farms with waste heat recovery as described in this utility model; Figure 3 This is a side sectional view of the heating component of a direct-fired heating device for chicken farms with waste heat recovery as described in this utility model; Figure 4 This is a schematic diagram of the cleaning component of a direct-fired heating device for chicken farms with waste heat recovery as described in this utility model; Figure 5This is an enlarged view of the cleaning ring structure of a direct-fired heating device for chicken farms with waste heat recovery, as described in this utility model.

[0015] In the attached diagram, the following are the reference numerals: 1. Heating component; 101. Direct combustion chamber; 102. Oxygen supply pipe; 103. Blower; 104. Flue gas pipe; 105. Biomass pellet burner; 106. Insulation layer; 107. Air heating zone; 108. Flow guide channel; 109. Fireproof board; 2. Heat exchange component; 201. Air inlet pipe; 202. Heat exchange tube; 203. Ventilation pipe; 3. Cleaning component; 301. Bracket; 302. Stirling engine; 303. Heat conduction rod; 304. Limiting block; 305. Sleeve; 306. Groove; 307. Cleaning ring; 308. Sponge pad. Detailed Implementation

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1-5 A direct-fired heating device for chicken farms with waste heat recovery includes a heating component 1 for heating air and guiding its flow, a heat exchange component 2 for isolating fresh air from pollution at the top of the heating component 1, and a cleaning component 3 driven by exhaust air energy in the middle of the heat exchange component 2.

[0020] In this embodiment: the heating component 1 includes a direct combustion chamber 101, an oxygen supply pipe 102 is vertically arranged at the bottom of the direct combustion chamber 101, a blower 103 is installed at the bottom of the oxygen supply pipe 102, a flue pipe 104 is arranged at the top of the direct combustion chamber 101, a heat insulation layer 106 is arranged on the inner wall of the direct combustion chamber 101, a biomass pellet burner 105 is installed on the right side of the direct combustion chamber 101, and a fireproof plate 109 is arranged inside the direct combustion chamber 101. The fireproof plate 109 is arranged perpendicular to the oxygen supply pipe 102 and located above the biomass pellet burner 105. The fireproof plate 109 will prevent the direct combustion of oxygen from the oxygen supply pipe 102. The internal space of the combustion chamber 101 is divided into an air heating zone 107 and a flow channel 108. The air heating zone 107 is connected to the oxygen supply pipe 102, and the flow channel 108 is connected to the flue gas pipe 104. When the blower 103 is started, cold air enters the air heating zone 107 from the oxygen supply pipe 102. The cold air is heated after contacting the flame of the biomass pellet burner 105, and then flows along the fireproof plate 109 to the flow channel 108, increasing the residence time of the air in the direct combustion chamber 101. The flue gas generated after combustion is discharged through the flue gas pipe 104.

[0021] In this embodiment: the heat exchange component 2 includes an air inlet pipe 201, one end of which is connected to a spiral heat exchange pipe 202, and the top end of the heat exchange pipe 202 is connected to a ventilation pipe 203. The air inlet pipe 201 passes through the direct combustion chamber 101, and the heat exchange pipe 202 is located inside the flue gas pipe 104. Fresh air is introduced into the air inlet pipe 201, and the gas inside the heat exchange pipe 202 is heated by the hot air flow in the flue gas pipe 104. Finally, the warm air flows into the chicken farm along the ventilation pipe 203. The fresh air and the flue gas are completely isolated throughout the process to avoid cross-contamination and improve the air quality in the chicken farm.

[0022] In this embodiment: the cleaning component 3 includes a bracket 301, and a Stirling engine 302 that can convert thermal energy into mechanical energy is installed on the top of the bracket 301. A heat-conducting rod 303 is provided at the power end of the Stirling engine 302. The heat-conducting rod 303 passes through the flue pipe 104. A strip-shaped limiting block 304 is provided on the heat-conducting rod 303. A sleeve 305 is slidably provided on the heat-conducting rod 303. A cleaning ring 307 is fixedly provided on the outer wall of one side of the sleeve 305. A groove 306 is opened on the inner side of the sleeve 305. The limiting block 304 and the inner wall of the groove 306 are connected. The sliding connection is used, and the cleaning ring 307 is sleeved on the heat exchange tube 202. A sponge pad 308 is provided on its inner side. The heat-conducting rod 303 transfers the heat that has not been absorbed in the flue gas pipe 104, so that the residual heat of combustion heats the heat input end of the Stirling engine 302. The Stirling engine 302 can convert heat into mechanical power to drive the heat-conducting rod 303 to rotate. As the sleeve 305 rises and falls under the constraint of the limiting block 304 and the cleaning ring 307, the sponge pad 308 moves along the heat exchange tube 202 to scrape its surface for cleaning.

[0023] Working principle: During use, the blower 103 is started to allow cold air to enter the air heating zone 107 from the oxygen supply pipe 102. The cold air is heated after contacting the flame of the biomass pellet burner 105, and then flows along the fireproof plate 109 and the flow guide channel 108 to increase the residence time of the air in the direct combustion chamber 101. The flue gas produced after combustion is discharged through the flue pipe 104, while fresh air is introduced into the air intake pipe 201. In the flue pipe 104, the hot air flow heats the gas in the heat exchange tube 202. Finally, the warm air flows into the chicken farm along the ventilation pipe 203. Throughout the entire process, the fresh air and the flue gas are completely integrated. Isolation prevents cross-contamination and improves air quality in the chicken farm. The heat-conducting rod 303 transfers unabsorbed heat in the flue pipe 104, allowing the residual heat from combustion to heat the heat input end of the Stirling engine 302. The Stirling engine 302 can convert heat into mechanical power to drive the heat-conducting rod 303 to rotate. This causes the sleeve 305 to rise and fall under the constraints of the limiting block 304 and the cleaning ring 307, while the sponge pad 308 moves along the heat exchange tube 202 to scrape its surface for cleaning. This prevents soot from adhering to the surface of the heat exchange tube 202, which would affect the heat exchange efficiency and extend the maintenance cycle of the device.

[0024] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. In addition, the biomass pellet burner and Stirling engine appearing in this embodiment are conventional and known devices. Those skilled in the art can control them through simple operation. Moreover, the existing disclosed burner and engine technologies are common knowledge in the field. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A direct-fired heating device for chicken farms with waste heat recovery, comprising a heating component (1) for heating air and guiding its flow, wherein the heating component (1) is provided with a heat exchange component (2) on top for isolating fresh air to prevent pollution, characterized in that: The heat exchange component (2) is provided with a cleaning component (3) driven by exhaust air energy in the middle. The cleaning component (3) includes a bracket (301), on the top of which is a Stirling engine (302) that can convert thermal energy into mechanical energy. A heat-conducting rod (303) is provided at the working end of the Stirling engine (302). A strip-shaped limiting block (304) is provided on the heat-conducting rod (303). A sleeve (305) is slidably provided on the heat-conducting rod (303). A cleaning ring (307) is fixedly provided on one side of the outer wall of the sleeve (305).

2. A direct-fired heating device for chicken farms with waste heat recovery according to claim 1, characterized in that: The heating component (1) includes a direct combustion chamber (101), an oxygen supply pipe (102) is vertically arranged at the bottom of the direct combustion chamber (101), a blower (103) is installed at the bottom of the oxygen supply pipe (102), a flue gas pipe (104) is arranged at the top of the direct combustion chamber (101), a heat insulation layer (106) is arranged on the inner wall of the direct combustion chamber (101), a biomass pellet burner (105) is installed on the right side of the direct combustion chamber (101), and a fireproof plate (109) is arranged inside the direct combustion chamber (101).

3. A direct-fired heating device for chicken farms with waste heat recovery according to claim 2, characterized in that: The heat exchange assembly (2) includes an air inlet pipe (201), one end of which is connected to a spiral heat exchange pipe (202), and the top end of the heat exchange pipe (202) is connected to a ventilation pipe (203).

4. A direct-fired heating device for chicken farms with waste heat recovery according to claim 2, characterized in that: The fireproof plate (109) is set perpendicular to the oxygen supply pipe (102) and located above the biomass pellet burner (105). The fireproof plate (109) divides the internal space of the direct combustion chamber (101) into an air heating zone (107) and a flow channel (108). The air heating zone (107) is connected to the oxygen supply pipe (102), and the flow channel (108) is connected to the flue gas pipe (104).

5. A direct-fired heating device for chicken farms with waste heat recovery according to claim 2, characterized in that: The heat-conducting rod (303) passes through the flue gas pipe (104).

6. A direct-fired heating device for chicken farms with waste heat recovery according to claim 3, characterized in that: The air intake pipe (201) passes through the direct combustion chamber (101), and the heat exchange pipe (202) is located inside the flue gas pipe (104).

7. A direct-fired heating device for chicken farms with waste heat recovery according to claim 1, characterized in that: The sleeve (305) has a groove (306) on its inner side, and the limiting block (304) is slidably connected to the inner wall of the groove (306).

8. A direct-fired heating device for chicken farms with waste heat recovery according to claim 3, characterized in that: The cleaning ring (307) is sleeved on the heat exchange tube (202), and a sponge pad (308) is provided on its inner side.

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