Heat accumulating type heat exchange device applying finned tube heat exchanger

Abstract

The utility model relates to the technical field of heat storage and transfer, and discloses a heat storage type heat exchange device using a finned tube heat exchanger, which comprises a heat storage liquid box, a circulating pump, an air duct, the finned tube heat exchanger and a drying oven main body, the output end of the circulating pump is communicated with a liquid inlet pipe, the finned tube heat exchanger comprises an upper header, a lower header, fins and heat exchange tubes, the heat exchange tubes are communicated between the upper header and the lower header, the fins are fixedly arranged on the outer walls of the heat exchange tubes in a sleeving mode to form finned tubes, the liquid inlet pipe is communicated with a water inlet of the upper header, and the liquid inlet pipe is communicated with a water outlet of the lower header. According to the heat accumulating type heat exchange device applying the finned tube heat exchanger, low-temperature liquid and high-temperature gas discharged by the drying oven are changed into high-temperature liquid through heat exchange, the high-temperature liquid heats low-temperature environment gas to be changed into high-temperature gas, then the high-temperature gas heats the drying oven, and waste heat recycling of the drying oven is achieved through the circulation.

Description

Technical Field

[0001] The utility model relates to the technical field of heat storage and transfer, in particular to a heat storage type heat exchange device using a fin tube heat exchanger. Background Art

[0002] In industrial production, the use cycle of an industrial oven (or oven, etc.) is divided into heating, temperature maintenance and cooling stages, and the use cycle is repeated continuously.

[0003] However, due to the periodicity of the production process, the waste heat discharged is usually intermittent and periodic. This working nature makes waste heat recovery relatively difficult. In addition, some traditional heat storage recovery devices have complex processes and high costs, and are not suitable for industrial waste heat recovery in some small scenarios. For this reason, we propose a heat storage heat exchange device using a fin-tube heat exchanger. Utility Model Content

[0004] The purpose of the utility model is to provide a heat storage type heat exchange device using a fin tube heat exchanger, which solves the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a heat storage heat exchange device using a fin-tube heat exchanger, comprising a heat storage liquid tank, a circulation pump, an air duct, a fin-tube heat exchanger and an oven main body, the circulation pump being connected to the water outlet of the heat storage liquid tank through a connecting pipe, the output end of the circulation pump being connected to a liquid inlet pipe, the fin-tube heat exchanger comprising an upper header, a lower header, fins and heat exchange tubes, the heat exchange tubes being connected and arranged between the upper header and the lower header, the fins being fixedly sleeved on the outer wall of the heat exchange tubes to form fin tubes, the liquid inlet pipe being connected to the water inlet of the upper header, the water outlet of the lower header being connected to the water inlet of the heat storage liquid tank, the air duct being sleeved on the outside of the fin tubes, an exhaust pipe being connected to the top end of the oven main body, one end of the air duct being connected to the exhaust pipe, and a fan being fixedly installed at the other end of the air duct.

[0006] Preferably, the liquid inlet pipe and the circulation pump, the connecting pipe of the circulation pump and the thermal storage liquid tank, the liquid outlet pipe and the thermal storage liquid tank, and the liquid inlet pipe, the liquid outlet pipe and the fin tube heat exchanger are all fixedly connected by threads and are all sealed with sealing rings.

[0007] Preferably, the outer layers of the thermal storage liquid tank, the liquid inlet pipe, the liquid outlet pipe, the air duct, and the upper and lower headers are all provided with insulation sleeves.

[0008] Preferably, the liquid inlet pipe and the liquid outlet pipe are both high-temperature resistant water pipes.

[0009] Preferably, a supporting telescopic rod is fixedly installed at the bottom end of the air duct, and a supporting plate is fixedly installed at the bottom end of the supporting telescopic rod.

[0010] The utility model provides a heat storage type heat exchange device using a fin tube heat exchanger. The heat storage type heat exchange device using a fin tube heat exchanger has the following beneficial effects:

[0011] (1) The heat storage heat exchange device using the fin tube heat exchanger can store the waste heat of the high-temperature gas in the industrial oven (oven), and then use it to heat the cold air, and finally heat the oven for the next use cycle, thereby reducing the extra power consumption and achieving efficient and periodic waste heat recovery. In addition, by separating the heat storage body (heat storage liquid tank) from the heat exchange body (fin tube heat exchanger), the applicability of the equipment is improved. The size specifications of the heat storage liquid tank and the fin tube heat exchanger can be adjusted according to the actual working conditions, which is particularly suitable for intermittent operation conditions.

[0012] (2) The heat storage heat exchange device using the finned tube heat exchanger uses the finned tube heat exchanger to exchange heat, so that the heat exchange medium flows evenly from the upper header to the lower header through the finned tubes, and the fins increase the heat exchange area, thereby improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the fin heat exchanger of the utility model;

[0015] Figure 3 This is a schematic diagram of the front structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the top structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the connection structure between the utility model and the oven main body.

[0018] In the figure: 1. thermal storage liquid tank; 2. circulating pump; 3. air duct; 4. fin-tube heat exchanger; 401. upper header; 402. lower header; 403. fins; 404. heat exchange tubes; 5. liquid inlet pipe; 6. liquid outlet pipe; 7. oven body; 8. exhaust pipe; 9. fan; 10. supporting telescopic rod; 11. support plate. DETAILED DESCRIPTION

[0019] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1-5 As shown, the utility model provides a technical solution: a heat storage heat exchange device using a fin tube heat exchanger, comprising a heat storage liquid tank 1, a circulating pump 2, an air duct 3, a fin tube heat exchanger 4 and an oven body 7, the circulating pump 2 is connected to the outlet of the heat storage liquid tank 1 through a connecting pipe, the output end of the circulating pump 2 is connected to a liquid inlet pipe 5, the fin tube heat exchanger 4 comprises an upper header 401, a lower header 402, fins and heat exchange tubes 404, the heat exchange tubes 404 are connected It is placed between the upper header 401 and the lower header 402. The fins 403 are fixedly sleeved on the outer wall of the heat exchange tube 404 to form a finned tube. The liquid inlet pipe 5 is connected to the water inlet of the upper header 401. The water outlet of the lower header 402 is connected to the water inlet of the thermal storage liquid tank 1 and is provided with a liquid outlet pipe 6. The air duct 3 is sleeved on the outside of the finned tube. The top of the oven body 7 is connected to the exhaust pipe 8. One end of the air duct 3 is connected to the exhaust pipe 8. The other end of the air duct 3 is fixedly installed with a fan 9.

[0023] Among them, when the oven main body 7 needs to discharge high-temperature gas to cool its interior, the fan 9 is started to rotate forward, so that the discharged high-temperature gas enters the air duct 3 through the exhaust pipe 8, flows through the fin 403 tube heat exchanger 4 tube and goes out of the gas. At the same time, the liquid in the thermal storage liquid tank 1 is transported to the upper header 401 of the fin 403 tube heat exchanger 4 through the liquid inlet pipe 5 through the circulation pump 2. After the liquid flows through the fin tube and exchanges heat with the high-temperature gas outside the tube, it flows into the thermal storage liquid tank 1 from the liquid outlet pipe 6. During the discharge of the high-temperature gas, the liquid circulates under the action of the circulation pump 2 to absorb heat to accumulate heat. Subsequently, when the oven main body 7 needs to be heated, the fan 9 is started in reverse, and the air with lower temperature in the environment can be sucked into the air duct 3, and flows through the fin 403 tube heat exchanger 4 tube to go out as gas. At the same time, the high-temperature liquid that has stored heat circulates and releases heat to the cold air, which is then heated and sucked into the oven main body 7, so that the oven main body 7 reaches the set temperature in a shorter time and with less power consumption; the above technical solution realizes the heat exchange between the low-temperature liquid and the high-temperature gas discharged from the oven to become high-temperature liquid, and the high-temperature liquid heats the low-temperature ambient gas to become high-temperature gas and then heats the oven, thereby realizing the recycling of waste heat from the oven.

[0024] Furthermore, the liquid inlet pipe 5 and the circulation pump 2, the connecting pipe of the circulation pump 2 and the thermal storage liquid tank 1, the liquid outlet pipe 6 and the thermal storage liquid tank 1, and the liquid inlet pipe 5, the liquid outlet pipe 6 and the fin-tube heat exchanger 4 are all fixedly connected by threads, and are all sealed with sealing rings. The material of the sealing ring is high-temperature resistant rubber. By providing the sealing ring, the sealing performance of the connection between the pipelines is increased to avoid water leakage. The liquid in the thermal storage liquid tank 1 can be water or heat transfer oil.

[0025] Furthermore, the outer layers of the heat storage liquid tank 1, the liquid inlet pipe 5, the liquid outlet pipe 6, the air duct 3, and the upper and lower headers 401 and 402 are all provided with insulation sleeves. The provision of the insulation sleeves can effectively reduce heat loss and improve heat exchange efficiency.

[0026] Furthermore, both the liquid inlet pipe 5 and the liquid outlet pipe 6 are high-temperature resistant water pipes.

[0027] Furthermore, a supporting telescopic rod 10 is fixedly installed at the bottom end of the air duct 3, and a supporting plate 11 is fixedly installed at the bottom end of the supporting telescopic rod 10. By setting the supporting rod 10 and the supporting plate, a certain supporting effect can be played on the air duct 3 during installation and use, thereby improving the stability of the air duct 3.

[0028] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A heat storage type heat exchange device using a fin-tube heat exchanger, comprising a heat storage liquid tank (1), a circulation pump (2), an air duct (3), a fin-tube heat exchanger (4) and an oven body (7), characterized in that: The circulating pump (2) is connected to the water outlet of the heat storage liquid tank (1) through a connecting pipe, and the output end of the circulating pump (2) is connected to a liquid inlet pipe (5). The fin-tube heat exchanger (4) comprises an upper header (401), a lower header (402), fins and heat exchange tubes (404). The heat exchange tubes (404) are connected between the upper header (401) and the lower header (402), and the fins (403) are fixedly sleeved on the heat exchange tubes (404). The outer wall forms a finned tube, the liquid inlet pipe (5) is connected to the water inlet of the upper header (401), the water outlet of the lower header (402) is connected to the water inlet of the heat storage liquid tank (1) and is provided with a liquid outlet pipe (6), the air duct (3) is sleeved on the outside of the finned tube, the top of the oven body (7) is connected to the exhaust pipe (8), one end of the air duct (3) is connected to the exhaust pipe (8), and the other end of the air duct (3) is fixedly installed with a fan (9).

2. The heat storage type heat exchange device using a fin tube heat exchanger according to claim 1, characterized in that: The liquid inlet pipe (5) and the circulation pump (2), the connecting pipe of the circulation pump (2) and the thermal storage liquid tank (1), the liquid outlet pipe (6) and the thermal storage liquid tank (1), and the liquid inlet pipe (5), the liquid outlet pipe (6) and the finned tube heat exchanger (4) are all fixedly connected via threads, and are all sealed with sealing rings.

3. The heat storage type heat exchange device using a fin tube heat exchanger according to claim 1, characterized in that: The outer layers of the heat storage liquid tank (1), the liquid inlet pipe (5), the liquid outlet pipe (6), the air duct (3), the upper header (401), and the lower header (402) are all provided with thermal insulation sleeves.

4. The heat storage type heat exchange device using a fin tube heat exchanger according to claim 1, characterized in that: The liquid inlet pipe (5) and the liquid outlet pipe (6) are both high-temperature resistant water pipes.

5. The heat storage type heat exchange device using a fin tube heat exchanger according to claim 1, characterized in that: A supporting telescopic rod (10) is fixedly mounted on the bottom end of the air duct (3), and a supporting plate (11) is fixedly mounted on the bottom end of the supporting telescopic rod (10).

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