Combustion type air heater heat collection device
By using multi-heat conductor pipes and spiral thermal strips in the combustion heater collector, the problem of insufficient thermal performance of the existing heater is solved, and efficient heat collection and energy-saving and environmentally friendly effects are achieved.
Patent Information
- Application Number
- CN202421948022.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The thermal performance of existing industrial heaters is insufficient, resulting in serious heat loss, high energy consumption and high usage costs, and unsatisfactory heat collection effect, resulting in energy waste and thermal pollution.
A combustion-type heat collecting device is designed, adopting a multi-heat conduction pipe structure and a spiral thermal conduction strip. Through the inclined setting and the coordination of the diverter rod, the retention time and heat absorption efficiency of the flue gas are improved.
It achieves efficient absorption of heat energy in flue gas, improves heat collection efficiency and effect, reduces heat loss, and meets the energy-saving and environmentally friendly design concept.
Smart Images
Figure CN222978633U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a hot air blower, in particular to a heat collection device for a combustion type hot air blower. Background Art
[0002] Industrial heaters have high requirements for heating due to the limitations of the usage environment requirements. Based on the heating requirements, the thermal efficiency requirements for industrial heaters are even higher. Although existing heaters can also achieve high efficiency, they often come at the cost of sacrificing energy, with serious heat loss, high energy consumption and high usage costs. The heat conduction in the prior art adopts a single-in and single-out structure, and its heat collection effect is not ideal, resulting in most of the heat energy being discharged into the atmosphere along with the flue gas, serious energy waste, not meeting the design concept of energy conservation and environmental protection, and having a short service life. At the same time, it will cause a certain amount of heat pollution to the atmosphere. Content of the Utility Model
[0003] Technical Problems to be Solved
[0004] The technical problem to be solved by the utility model is to provide a heat collection device for a combustion type hot air blower with a compact structure, convenient installation, high heat collection efficiency and good effect.
[0005] Technical Solutions for Solving the Problems
[0006] The utility model provides a heat collection device for a combustion type hot air blower, which comprises:
[0007] A first box body 4, in which a first chamber 40 communicating with a combustion chamber and capable of allowing the flue gas in the combustion chamber to enter is formed;
[0008] A second box body 6, in which an exhaust smoke chamber 60 is formed, and an exhaust smoke port 601 is opened on the side wall of the exhaust smoke chamber 60;
[0009] A heat collection assembly 5, comprising a plurality of heat conduction tubes 51 connected between the first chamber 40 and the exhaust smoke chamber 60, the heat conduction tubes 51 being made of heat conductive materials and capable of absorbing the heat energy in the flue gas discharged from the first chamber 40.
[0010] Further, the heat conduction tubes 51 are inclined, and the included angle between their axes and the horizontal plane is less than or equal to 10 degrees.
[0011] Further, the height of the exhaust end of the heat conduction tube 51 is higher than the height of its intake end.
[0012] Further, one or more flow dividing rods 41 for dividing the flue gas are arranged in the first box body 4, and the flow dividing rods 41 are arranged at the lower end of the heat collection assembly.
[0013] Furthermore, the heat collection components 5 are provided in multiple groups and arranged successively from top to bottom. Each group of the heat collection components 5 includes a plurality of heat conduction tubes 51 that are parallel and equidistantly arranged on the same plane.
[0014] Furthermore, the heat collection components 5 are at least three groups and are equidistantly arranged from top to bottom. The distance between two adjacent heat conduction tubes on the same heat collection component 5 is the same as the distance between two adjacent heat collection components 5.
[0015] Furthermore, the heat conduction tubes 51 on the upper and lower adjacent heat collection components 5 are staggered.
[0016] Furthermore, there is a gap between two adjacent heat conduction tubes 51 to form a heating zone that can heat the passing air flow. The gap distance between two adjacent heat conduction tubes 51 is less than or equal to the outer diameter of the heat conduction tube 51.
[0017] Furthermore, a heat conduction strip 52 is provided inside the heat conduction tube 51. The heat conduction strip 52 is spiral-shaped and can extend the residence time of the flue gas in the heat conduction tube 51.
[0018] Furthermore, the heat conduction strip 52 is made of a heat-conducting material, and its side wall contacts the inner wall of the heat conduction tube 51 and can transfer heat energy to the heat conduction tube 51.
[0019] Furthermore, the ratio of the pitch of the heat conduction strip 52 to the aperture diameter of the heat conduction tube 51 is less than or equal to 5.
[0020] Beneficial effects
[0021] The heat collection device of the combustion type hot air blower of the present utility model adopts a multi-heat conduction tube structure, which can absorb the heat energy from the discharged flue gas respectively, has a large heat absorption area, a high heat absorption efficiency, and a good heat collection effect; a spiral heat conduction strip structure is arranged inside the heat conduction tube to change the straight-line movement of the flue gas into spiral movement, which has a buffering effect on the flue gas, reduces the flow velocity of the flue gas in the heat conduction tube, and at the same time, extends the flow stroke in the heat conduction tube, thereby greatly increasing the flow time in the heat conduction tube, extending the heat absorption time, and at the same time, making the flue gas form a turbulent flow during the flow process, so that the flue gas is in uniform contact with the inner wall of the heat conduction tube, allowing the whole body of the heat conduction tube to absorb heat more evenly and more durably, reducing heat loss, playing a better role in heat conduction and heat collection, and thus improving the heat collection efficiency and heat collection effect; the heat conduction strip is made of a heat-conducting material and has a heat absorption function at the same time, increasing the contact area with the flue gas, realizing double heat collection, with high heat absorption uniformity and efficiency, and a good heat collection effect; a flow dividing rod is provided, which can divide the flue gas, reduce the temperature difference between the flue gas entering the center and both ends of the heat collection device, and improve the heat collection efficiency and effect; the heat collection device of the combustion type hot air blower of the present utility model has a compact structure, a small volume, is convenient to process, has a low cost, a high heat collection efficiency and a good effect, and meets the design concept of energy conservation and environmental protection. Brief Description of the Drawings
[0022] Figure 1 FIG. is a schematic structural view of the heat collection device of the combustion type hot air blower of the present utility model;
[0023] Figure 2 FIG. is a schematic structural view of the heat collection device of the combustion type hot air blower of the present utility model from another angle;
[0024] Figure 3 FIG. is a sectional view of the heat collection device of the combustion type hot air blower of the present utility model;
[0025] Figure 4 FIG. is a schematic structural view of the first box body of the heat collection device of the combustion type hot air blower of the present utility model;
[0026] Figure 5 FIG. is a schematic structural view of the second box body of the heat collection device of the combustion type hot air blower of the present utility model;
[0027] Figure 6 FIG. is a schematic arrangement view of the heat conduction tubes of the heat collection device of the combustion type hot air blower of the present utility model;
[0028] Figure 7 FIG. is a schematic installation view of the heat conduction tubes of the heat collection device of the combustion type hot air blower of the present utility model;
[0029] Figure 8 FIG. is a schematic structural view of the heat conduction tubes of the heat collection device of the combustion type hot air blower of the present utility model;
[0030] Figure 9 is Figure 8 an enlarged view of part A in Detailed Description of the Preferred Embodiments
[0031] The embodiments of the present utility model will be described in detail below with reference to the drawings.
[0032] Referring to Figures 1-9 , the present utility model provides a heat collection device for a combustion type hot air blower, which is used to collect the heat energy of the flue gas generated by a combustion chamber, cooperate with a fan and generate hot air, and includes a first box body 4, a second box body 6 and a heat collection assembly 5.
[0033] The first box body 4 has a box-type sealed structure, and a first chamber 40 is formed in the first box body 4. The lower end of the first chamber 40 is communicated with a combustion chamber, and the flue gas generated by combustion in the combustion chamber can enter the first chamber 40 and serve as a heat source. The flue gas generated by combustion is a high-temperature gas and contains a large amount of heat.
[0034] The second box body 6 is arranged opposite to the first box body with a certain distance therebetween for installing a heat collection component. A chamber is formed inside the second box body 6, and this chamber serves as a smoke exhaust chamber 60. A smoke exhaust port 601 is opened on the side wall of the smoke exhaust chamber 60 for exhausting the heat-exchanged flue gas. At this time, the temperature of the exhausted flue gas is relatively low.
[0035] The heat collection component 5 is arranged between the first box body 4 and the second box body 6 for collecting the heat in the flue gas. Each group of the heat collection components includes a plurality of heat conduction tubes 51. The heat conduction tubes 51 are arranged between the first chamber 40 and the smoke exhaust chamber 60. The heat conduction tubes 51 are tube body structures with open ends at both ends. The flue gas in the first box body can enter the second box body after passing through the heat conduction tubes. The heat conduction tubes absorb the heat of the passing flue gas. Correspondingly, a first installation hole 401 for installing the heat conduction tube 51 is opened on the side wall of the first chamber 40, and a second installation hole 602 for installing the heat conduction tube 51 is opened on the side wall of the smoke exhaust chamber. The first installation hole and the second installation hole are arranged opposite to each other. Both ends of the heat conduction tube 51 are respectively sleeved in the first installation hole and the second installation hole, thereby realizing fixed installation. The heat conduction tube 51 is made of a heat-conducting material, and it can absorb the heat energy in the flue gas discharged from the first chamber 40. In this application, the heat conduction tube 51 is made of aluminum or copper or iron or other metal heat-conducting materials.
[0036] In order to improve the self-flowability of the flue gas and reduce the pressure on the combustion chamber, in this embodiment, the heat conduction tube 51 is inclined. The height of its exhaust end (the connection end with the second box body) is higher than the height of its intake end (the connection end with the first box body), and the included angle between the axis of the heat conduction tube 51 and the horizontal plane is less than or equal to 10 degrees. Preferably, it is 6 degrees. It can enable the flue gas to enter the heat conduction tube for heat collection during its own rising process. At the same time, it can extend the flow time of the flue gas in the heat conduction tube, improve the heat collection efficiency and effect, and through this structure, the overall installation space, especially the height space, can be reduced.
[0037] During operation, the temperature of the flue gas at the center is relatively high, and the temperature of the flue gas at the two sides is relatively low, that is, the temperature of the flue gas entering the heat conduction tube 51 at the center is relatively high, and the temperature of the flue gas entering the heat conduction tubes 51 at the two sides is relatively low, resulting in uneven heat distribution and affecting the heat absorption efficiency and effect. To solve this problem, in this application, one or more flow dividing rods 41 are arranged in the first box body 4. The flow dividing rods 41 are horizontally arranged and are located at the lower end of the first installation hole (heat collection component). The length direction thereof is parallel to the connection direction of the first box body and the second box body. During the rising process of the flue gas, it contacts the flow dividing rod 41 and disperses to both sides of the flow dividing rod, that is, it can disperse the flue gas at the center to both sides to achieve flow division, and further achieve uniform distribution of the flue gas, reduce the temperature difference of the flue gas entering the heat conduction tubes at the center and the two sides, and improve the heat absorption efficiency and effect.
[0038] In order to further improve the heat collection efficiency, in this application, there are multiple groups (rows) of heat collection components 5, which are arranged successively from top to bottom. Each group (row) of heat collection components 5 includes a plurality of heat conduction tubes 51 arranged in parallel. In this embodiment, the heat conduction tubes 51 on the heat collection components 5 of the same group (row) are located on the same horizontal plane and are equidistantly arranged in the horizontal direction; preferably, there are at least three groups of heat collection components 5 and they are equidistantly arranged up and down. The distance between two adjacent heat conduction tubes on the same heat collection component 5 is the same as the distance between two adjacent rows of heat collection components 5 up and down, that is, the distances between two adjacent heat conduction tubes vertically and horizontally are the same, forming a matrix arrangement; there is a gap between two adjacent heat conduction tubes 51, forming a heating zone, which can heat the passing air flow to form hot air. In this embodiment, the gap distance between two adjacent heat conduction tubes 51 is less than or equal to the outer diameter of the heat conduction tube 51. At the same time, the heat conduction tubes 51 on two adjacent groups (rows) of heat collection components 5 up and down are staggered, which can increase the contact area between the heat conduction tubes and the air, improving the heat conduction efficiency and effect.
[0039] In this application, a heat conduction strip 52 is provided inside the heat conduction tube 51. The heat conduction strip 52 is spiral-shaped, which can extend the residence time of the flue gas in the heat conduction tube 51. Specifically, a spiral channel is formed between the spiral heat conduction strip and the heat conduction tube, changing the linear motion of the flue gas to spiral motion, having a buffering effect on the flue gas, reducing the flow velocity of the flue gas in the heat conduction tube. At the same time, it extends the flow stroke (length) in the heat conduction tube, and thus greatly increases the flow time in the heat conduction tube, that is, extends the residence (contact) time in the heat conduction tube, increasing the heat absorption time. At the same time, it makes the flue gas form a turbulent flow during the flow process, making the flue gas uniformly contact the inner wall of the heat conduction tube, enabling the whole body of the heat conduction tube to absorb heat more uniformly and lastingly, reducing heat loss, playing a better role in heat conduction and heat collection, and thus improving the heat collection efficiency and heat collection effect; in this embodiment, the axial length of the heat conduction strip is greater than or equal to the length of the heat conduction tube to maximize the extension of the residence time of the flue gas.
[0040] In this application, the heat conduction strip 52 is made of a heat conduction material, and its side wall contacts the inner wall of the heat conduction tube 51, and thus can transfer heat energy to the heat conduction tube 51. In this process, the heat conduction strip 52 has both a heat conduction (heat absorption) function. Its contact area with the flue gas accounts for a relatively large proportion, absorbing the heat in the flue gas, realizing dual heat collection with high heat absorption uniformity. At the same time, it further improves the overall heat collection efficiency and effect of the heat conduction tube; in this embodiment, the ratio of the pitch of the heat conduction strip 52 to the aperture diameter of the heat conduction tube 51 is less than or equal to 5. Through the optimization of the pitch parameter, it can further increase the flow length of the flue gas in the heat conduction tube and reduce the flow velocity, and thus improve the heat collection efficiency and effect of the heat conduction tube.
[0041] The heat collection device of the utility model's combustion type hot air blower adopts a multi-conductive tube structure, which can absorb the heat energy from the discharged flue gas respectively. It has a large heat absorption area, high heat absorption efficiency and good heat collection effect. A spiral heat conduction strip structure is arranged in the conductive tube, which changes the straight-line movement of the flue gas into spiral movement, has a buffering effect on the flue gas, reduces the flow velocity of the flue gas in the conductive tube. At the same time, it prolongs the flow stroke in the conductive tube, thus greatly increasing the flow time in the conductive tube and prolonging the heat absorption time. At the same time, it makes the flue gas form a turbulent flow during the flow process, making the flue gas contact the inner wall of the conductive tube evenly, so that the whole body of the conductive tube can absorb heat more evenly and lastingly, reducing the loss of heat, playing a better role in heat conduction and heat collection, and then improving the heat collection efficiency and effect. The heat conduction strip is made of heat-conductive material and has a heat absorption function at the same time, increasing the contact area with the flue gas, realizing double heat collection, with high heat absorption uniformity and efficiency and good heat collection effect. A flow dividing rod is set, which can divide the flue gas, reducing the temperature difference between the flue gas entering the center and both ends of the heat collection device, improving the heat collection efficiency and effect. The heat collection device of the utility model's combustion type hot air blower has a compact structure, small volume, convenient processing, low cost, high heat collection efficiency and good effect, meeting the design concept of energy conservation and environmental protection.
[0042] The above are only the preferred embodiments of the utility model. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.
Claims
1. A combustion type hot air blower heat collecting device, characterized in that: include: A first box body, wherein a first chamber connected to a combustion chamber and capable of allowing smoke in the combustion chamber to enter is formed in the first box body; A second box body, wherein a smoke exhaust cavity is formed in the second box body, and a smoke exhaust port is opened on a side wall of the smoke exhaust cavity; The heat collecting assembly comprises a plurality of heat conducting pipes connected between the first chamber and the smoke exhaust chamber, wherein the heat conducting pipes are made of heat conducting materials and can absorb heat energy in the smoke exhausted from the first chamber.
2. The combustion type hot air blower heat collector device according to claim 1, characterized in that: The heat conducting pipe is tilted and the angle between its axis and the horizontal plane is less than or equal to 10 degrees.
3. The combustion type hot air blower heat collector device according to claim 1 or 2, characterized in that: The height of the exhaust end of the heat conducting pipe is higher than the height of the intake end thereof.
4. The combustion type hot air blower heat collector device according to claim 1, characterized in that: The heat collecting components are in multiple groups and are arranged in sequence from top to bottom. Each group of the heat collecting components includes multiple heat conducting pipes that are arranged in parallel and equidistantly on the same plane.
5. The combustion type hot air blower heat collecting device according to claim 1, characterized in that: One or more diverter rods for diverting smoke are disposed in the first box body, and the diverter rods are arranged at the lower end of the heat collecting assembly.
6. The combustion type hot air blower heat collector device according to claim 4, characterized in that: The heat conducting pipes on the upper and lower adjacent heat collecting assemblies are arranged in a staggered manner.
7. The combustion type hot air blower heat collector device according to claim 4, characterized in that: The gap distance between two adjacent heat-conducting pipes is less than or equal to the outer diameter of the heat-conducting pipe.
8. The combustion type hot air blower heat collector device according to claim 1, characterized in that: A heat-conducting strip is arranged in the heat-conducting pipe, and the heat-conducting strip is spiral-shaped and can prolong the residence time of the flue gas in the heat-conducting pipe.
9. The combustion type hot air blower heat collector device according to claim 8, characterized in that: The heat-conducting strip is made of a heat-conducting material, and the side wall thereof is in contact with the inner wall of the heat-conducting pipe and can transfer heat energy to the heat-conducting pipe.
10. The combustion type hot air blower heat collector device according to claim 8, characterized in that: The ratio of the pitch of the heat-conducting strip to the aperture of the heat-conducting pipe is less than or equal to 5.