Energy-saving and efficiency-improving equipment for air heater

Abstract

The utility model discloses energy-saving and efficiency-improving equipment for an air heater, which relates to the technical field of air heaters and comprises a plurality of heat exchange tubes, an air inlet tube is fixedly arranged at one end of each heat exchange tube, an exhaust tube is fixedly arranged at the other end of each heat exchange tube, and a plurality of heating medium tubes are arranged on two sides of each heat exchange tube in a penetrating manner. The heat exchange pipe is arranged, the heat conduction pipes are arranged in the heat exchange pipe, the heat conduction pipes can achieve circulating conveying of a heating medium, the heating medium can exchange heat with air in the heat exchange pipe in the circulating process so that the air heating effect can be achieved, the heating medium can be heated in a boiler mode, an electric heating mode and other modes, and the heating efficiency is improved. The heat conduction fins are arranged on the two sides of the heat conduction pipe, and the heat conduction fins can improve the heat exchange efficiency between the heat conduction pipe and air and can play a role in guiding air flow, so that the purpose of improving the energy efficiency of the device is achieved.

Description

Technical Field

[0001] This utility model relates to the field of air heater technology, and in particular to an energy-saving and efficiency-enhancing device for air heaters. Background Technology

[0002] Air heaters are electric heating devices primarily used to heat gas streams. The heating element, a stainless steel heating tube, is made by inserting a heating wire into a seamless steel tube, filling the gaps with magnesium oxide powder, which has good thermal conductivity and insulation, and then shrinking the tube. When current passes through the high-temperature resistance wire, the generated heat diffuses through the crystalline magnesium oxide powder to the surface of the heating tube and is then transferred to the air being heated, thus achieving the heating purpose. However, using resistance wire to heat air results in wasted electrical energy. Furthermore, the short time air spends passing through the stainless steel heating tube means a short time for heat absorption, requiring a large number of heating tubes to operate simultaneously to ensure the gas is heated to the specified temperature, resulting in significant waste of electrical resources.

[0003] An energy-saving device for a ducted air heater, disclosed in CN211317017U, includes a main body and an insulation sleeve. An air inlet is located at the left end of the main body, and a heating zone is pre-installed inside the main body. The outer surface of the heating zone is covered with insulation cotton. A heating tube is installed inside the heating zone, and a guide plate is fixed to the outer surface of the heating tube. The insulation sleeve covers the outer surface of the air outlet, and a fixing block is fixed to the outer surface of the insulation sleeve. A fixing buckle is installed on the inner surface of the fixing block, and a rotating screw is connected to the outer surface of the fixing buckle. A support frame is installed at the lower end of the main body. In this energy-saving device for a ducted air heater, the insulation cotton is made of aluminum silicate ceramic fiber, which has excellent heat insulation and high-temperature resistance, allowing the heat inside the main body to be fully heated. The temperature of the outer surface is generally between 30-50℃, resulting in excellent heating and energy-saving effects.

[0004] The above-mentioned technical solutions suffer from the problem of wasting electric heating energy and being insufficiently energy-efficient.

[0005] Therefore, it is necessary to invent an energy-saving and efficiency-enhancing air heater to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an energy-saving and efficiency-enhancing air heater to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an energy-saving and efficiency-enhancing air heater device, comprising multiple heat exchange tubes, each heat exchange tube having an air inlet pipe fixedly installed at one end and an exhaust pipe fixedly installed at the other end; multiple heat transfer medium pipes penetrating both sides of each heat exchange tube; a heat conduction pipe fixedly installed between adjacent heat transfer medium pipes; the heat conduction pipe having a conical spiral structure; heat conduction fins fixedly installed on both sides of each heat conduction pipe; the heat conduction fins having a "┐" shaped structure and being centrally symmetrically arranged; multiple flow guide blocks fixedly installed inside each heat exchange tube, with the flow guide blocks and heat conduction tubes arranged in an alternating manner; a first inclined surface on the side of each flow guide block near the air inlet pipe and a second inclined surface on the side of each flow guide block near the exhaust pipe, the second inclined surface having a greater slope than the first inclined surface; an annular groove being formed at one end of the inner wall of the air inlet pipe, with a dustproof mesh inserted into the annular groove.

[0008] Preferably, the dustproof net is configured with a funnel-shaped structure.

[0009] Preferably, one end of the air inlet pipe is fixedly provided with a ring-shaped mounting base, and a connecting seat is fixedly provided on the outside of the mounting base by bolts.

[0010] Preferably, a bellows is fixedly provided on the outer side of the connecting seat, and an air input pipe is fixedly provided on the outer side of the bellows.

[0011] Preferably, an air exhaust pipe is fixedly provided at one end of the exhaust pipe.

[0012] Preferably, a heat medium circulation pipe is fixedly provided at one end of the heat medium pipe.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model incorporates a heat exchange tube with multiple heat-conducting pipes inside. These pipes facilitate the circulation of a heat medium, which exchanges heat with the air within the tube during circulation to achieve air heating. The heat medium can be heated by various methods, such as boilers or electric heating, allowing the device to adjust the heating method according to actual needs, thereby achieving energy saving and efficiency improvement. By installing heat-conducting fins on both sides of the heat-conducting pipe, the fins not only enhance the heat exchange efficiency between the heat-conducting pipe and the air but also guide airflow, thus improving the device's energy efficiency.

[0015] 2. This utility model provides a flow guide block inside the heat exchange tube, with a first inclined surface and a second inclined surface on both sides of the flow guide block. The first inclined surface can gather and guide the air from the outside to the inside, and the second inclined surface can disperse and guide the air from the inside to the outside, so as to ensure that the air can fully contact the heat-conducting tube and the heat-conducting fins, thereby improving the energy efficiency of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the heat exchange tube structure of this utility model.

[0018] Figure 3 This is a cross-sectional schematic diagram of the heat exchanger tube structure of this utility model.

[0019] Figure 4 This is a cross-sectional schematic diagram of the heat exchanger tube structure of this utility model.

[0020] In the diagram: 1. Heat exchanger tube; 2. Air inlet pipe; 3. Air outlet pipe; 4. Heat transfer medium pipe; 5. Heat conduction pipe; 6. Heat conduction fins; 7. Guide block; 8. First inclined surface; 9. Second inclined surface; 10. Annular groove; 11. Dustproof net; 12. Mounting base; 13. Connecting base; 14. Corrugated pipe; 15. Air inlet pipe; 16. Air outlet pipe; 17. Heat transfer medium circulation pipe. Detailed Implementation

[0021] 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.

[0022] This utility model provides, for example Figure 1-4 The air heater energy-saving and efficiency-enhancing device shown includes a heat exchange tube 1, and multiple heat exchange tubes 1 are provided. An air inlet pipe 2 is fixedly provided at one end of each heat exchange tube 1, and an exhaust pipe 3 is fixedly provided at the other end of each heat exchange tube 1. Multiple heat medium pipes 4 are provided through both sides of the heat exchange tube 1. A heat conduction pipe 5 is fixedly provided between two adjacent heat medium pipes 4. The heat conduction pipe 5 is designed with a conical spiral structure. Heat conduction fins 6 are fixedly provided on both sides of the heat conduction pipe 5. The heat conduction fins 6 are designed with a "┐" shaped structure, and the two heat conduction fins 6 are centrally symmetrically arranged. The heat conduction fins 6 can guide the air to ensure that the air flows along the outer wall of the heat conduction pipe 5.

[0023] Specifically, multiple flow guide blocks 7 are fixedly installed inside the heat exchange tube 1, and the multiple flow guide blocks 7 are staggered with the multiple heat conduction tubes 5. A first inclined surface 8 is provided on the side of the flow guide block 7 near the air inlet pipe 2, and a second inclined surface 9 is provided on the side of the flow guide block 7 near the air outlet pipe 3. The slope of the second inclined surface 9 is greater than that of the first inclined surface 8. The first inclined surface 8 can gather and guide the air from the outside to the inside, and the second inclined surface 9 can disperse and guide the air from the inside to the outside, so as to ensure that the air can fully contact the heat conduction tubes 5 and the heat conduction fins 6.

[0024] More specifically, an annular groove 10 is provided at one end of the inner wall of the air inlet duct 2, and a dustproof net 11 is inserted into the annular groove 10. The dustproof net 11 is designed as a funnel-shaped structure. The funnel-shaped structure design can increase the contact area between the dustproof net 11 and the air, thereby improving the filtration efficiency of the dustproof net 11.

[0025] Furthermore, an annular mounting base 12 is fixedly installed at one end of the air inlet pipe 2. A connecting base 13 is fixedly installed on the outside of the mounting base 12 by bolts. A corrugated pipe 14 is fixedly installed on the outside of the connecting base 13. The foldable design of the corrugated pipe 14 facilitates the disassembly and cleaning of the dustproof net 11. An air inlet pipe 15 is fixedly installed on the outside of the corrugated pipe 14. An air outlet pipe 16 is fixedly installed at one end of the exhaust pipe 3. A heat medium circulation pipe 17 is fixedly installed at one end of the heat medium pipe 4. The heat medium circulation pipe 17 can be connected to heating equipment such as boilers and electric heaters to realize the generation and transportation of heat.

[0026] Working principle of this utility model:

[0027] In use, the heat medium is heated by a boiler, electric heater, etc., and then injected into the heat-conducting pipe 5 through the heat medium circulation pipe 17 and heat medium pipe 4. Cold air is injected into the air inlet pipe 2 through the air inlet pipe 15 and the corrugated pipe 14, and then passes through the heat exchange pipe 1. During the process of passing through the heat exchange pipe 1, the air is guided and gathered by the first inclined surface 8 and enters the end of the heat-conducting pipe 5. Then, guided by the heat-conducting fins 6, it moves along the outer wall of the heat-conducting pipe 5 and exchanges heat with the heat medium inside the heat-conducting pipe 5 to achieve the heating effect of the air. During the process of passing through the heat-conducting pipe 5, the air is guided and dispersed outward by the second inclined surface 9 to ensure the heat exchange effect between the air and the heat-conducting pipe 5. After the air separates from the heat-conducting pipe 5, it is guided and gathered by the next set of first inclined surfaces 8 and then exchanges heat with the next set of heat-conducting pipes 5. After the heat exchange is completed, the air is discharged through the exhaust pipe 3 and the air discharge pipe 16 to complete the heating of the air.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An energy-saving and efficiency-enhancing device for an air heater, comprising a heat exchange tube (1), characterized in that: Multiple heat exchange tubes (1) are provided. One end of each heat exchange tube (1) is fixedly provided with an air inlet pipe (2), and the other end of each heat exchange tube (1) is fixedly provided with an air outlet pipe (3). Multiple heat transfer pipes (4) are provided through both sides of each heat exchange tube (1). A heat conduction pipe (5) is fixedly provided between two adjacent heat transfer pipes (4). The heat conduction pipe (5) is configured with a conical spiral structure. Heat conduction fins (6) are fixedly provided on both sides of each heat conduction pipe (5). The heat conduction fins (6) are configured with a "┐" shaped structure, and two heat conduction fins (6) are fixedly provided with a "┐" shaped structure. 6) The heat exchange tube (1) is centrally symmetrically arranged with multiple guide blocks (7) fixedly arranged inside, and the multiple guide blocks (7) and multiple heat conduction tubes (5) are arranged in an alternating manner. The guide block (7) has a first inclined surface (8) on the side near the air inlet pipe (2), and a second inclined surface (9) on the side near the air outlet pipe (3). The slope of the second inclined surface (9) is greater than that of the first inclined surface (8). An annular groove (10) is opened at one end of the inner wall of the air inlet pipe (2), and a dustproof net (11) is inserted into the annular groove (10).

2. The energy-saving and efficiency-enhancing air heater device according to claim 1, characterized in that: The dustproof net (11) is configured as a funnel-shaped structure.

3. The energy-saving and efficiency-enhancing air heater device according to claim 2, characterized in that: One end of the air inlet pipe (2) is fixedly provided with a ring-shaped mounting base (12), and a connecting base (13) is fixedly provided on the outside of the mounting base (12) by bolts.

4. The energy-saving and efficiency-enhancing air heater device according to claim 3, characterized in that: A bellows (14) is fixedly provided on the outside of the connecting seat (13), and an air input pipe (15) is fixedly provided on the outside of the bellows (14).

5. The energy-saving and efficiency-enhancing air heater device according to claim 4, characterized in that: An air exhaust pipe (16) is fixedly installed at one end of the exhaust pipe (3).

6. The energy-saving and efficiency-enhancing air heater device according to claim 5, characterized in that: A heat medium circulation pipe (17) is fixedly installed at one end of the heat medium pipe (4).

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