Energy storage drying device

Abstract

The utility model relates to the field of circuit board drying devices, in particular to an energy storage drying device which comprises a tank body, a heating pipe, an air inlet pipe, an air outlet pipe, a nitrogen pipe and a circulating pipe, and the tank body comprises an energy storage tank, an upper end cover, a lower end cover, a cotton cover, an upper air duct fixing plate, a lower air duct fixing plate and a communicating vessel. Fused salt can be heated before drying operation is needed to reach the needed working temperature, due to the fact that the fused salt has high heat conductivity and good heat stability, heat energy can be stored for a long time and is not prone to loss, the waiting time is shortened, the electricity cost can be reduced through peak shifting utilization of electric energy, the production cost of enterprises is reduced, and economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the field of circuit board drying devices, in particular to an energy storage drying device. Background Art

[0002] In the field of printed circuit board drying, the electric heating tunnel oven is an important equipment, and its working principle is mainly based on electric heat conversion and hot air circulation.

[0003] First of all, the electric heating tunnel furnace is equipped with electric heating elements, such as heating wires or heating tubes. When electric current passes through these electric heating elements, electrical energy is converted into thermal energy to generate high temperature. These electric heating elements heat the surrounding air to form high-temperature hot air.

[0004] Next, the fan inside the tunnel furnace starts working, blowing high-temperature hot air into the furnace, and through the specific air duct design, the hot air forms a circulation flow in the furnace. This circulating hot air can evenly contact and heat the materials on the printed circuit board, thereby achieving rapid and uniform drying. During the hot air circulation process, the moisture or solvent in the material is gradually evaporated, thereby achieving the purpose of drying.

[0005] However, the use of electric heating also has the following problems:

[0006] First, when the electric heating tunnel furnace is in operation, it mainly relies on the conversion of electrical energy into thermal energy to work. Although this direct electric-to-heat conversion method is highly efficient, it also leads to higher electricity costs, increasing the company's production costs.

[0007] Second, during the heating process of the electric heating tunnel furnace, the heat conduction and heat radiation of the electric heating elements take a certain amount of time, so the heating speed is relatively slow and the waiting time is long. Utility Model Content

[0008] In view of the shortcomings of the prior art, the purpose of the utility model is to provide an energy storage drying device, including a tank body, a heating pipe, an air inlet pipe, an air outlet pipe and a circulation pipe;

[0009] The tank body includes an energy storage tank, an upper end cover, a lower end cover, an upper air duct fixing plate and a lower air duct fixing plate. The top of the energy storage tank is fixedly connected to the bottom of the upper end cover, and the bottom of the energy storage tank is fixedly connected to the top of the lower end cover. Molten salt is filled in the energy storage tank as a heat storage medium. The upper air duct fixing plate is fixedly connected to the upper side of the energy storage tank, and the lower air duct fixing plate is fixedly connected to the lower side of the energy storage tank. The upper part of the energy storage tank is provided with corresponding air inlet and air outlet ports.

[0010] There are a number of heating pipes, one end of which is fixedly connected to the upper air duct fixing plate and is evenly distributed along the circumference of the annular upper air duct fixing plate;

[0011] The air inlet pipe and the air outlet pipe pass through the air inlet pipe opening and the air outlet pipe opening respectively, and one end of each of them is fixedly connected to the upper part of the energy storage tank;

[0012] The upper and lower ends of the circulation pipe are fixedly connected to the upper duct fixing plate and the lower duct fixing plate respectively, the two adjacent circulation pipes are connected, the top of the first circulation pipe is fixedly connected and connected to the air inlet pipe, and the top of the last circulation pipe is fixedly connected and connected to the air outlet pipe, which can realize the flow of air from the air inlet pipe to the circulation pipe and then to the air outlet pipe.

[0013] Furthermore, the energy storage drying device also includes a nitrogen pipe, which is fixedly connected to the upper part of the energy storage tank and communicated with the interior of the energy storage tank, and uses the low thermal conductivity of nitrogen for thermal insulation.

[0014] Furthermore, the tank body also includes a cotton cover, which wraps the energy storage tank for heat preservation. The top of the cotton cover is fixedly connected to the protruding outer edge of the upper end of the energy storage tank, the bottom of the cotton cover is fixedly connected to the lower end cover, and the upper part of the cotton cover is provided with corresponding air inlet and outlet ports.

[0015] Furthermore, the upper duct fixing plate and the lower duct fixing plate are fixedly connected with a communicating vessel, which is provided with an internal channel. The pipe openings at the upper and lower ends of the circulation pipe correspond to the internal channel openings of the communicating vessel, and two adjacent circulation pipes are connected through the internal channel of the communicating vessel.

[0016] Furthermore, in order to enhance the strength of the energy storage tank, the tank body further includes an outer hoop which surrounds the energy storage tank and is fixedly connected to the outer wall of the energy storage tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Molten salt is used as the heat storage medium. Molten salt has high heat capacity and high thermal conductivity. It can efficiently absorb and store thermal energy. The device can heat the molten salt by electricity when electricity consumption is low. The heated molten salt can keep the air in the pipeline at a high temperature for a long time, thereby reducing electricity costs through the staggered use of electricity, reducing corporate production costs, and improving economic benefits.

[0019] 2. Using molten salt as a heat storage medium, the molten salt can be heated before the drying operation is required to reach the required working temperature. Since molten salt has high thermal conductivity and good thermal stability, it can store heat energy for a long time without easy loss, thereby reducing waiting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the drawings required for describing the specific implementation or the prior art will be briefly introduced below. Obviously, the drawings described below are only one implementation of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the energy storage drying device;

[0022] Figure 2 It is a schematic diagram of the external structure of the energy storage tank;

[0023] Figure 3 This is a schematic diagram of the internal structure of the energy storage tank Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the internal structure of the energy storage tank Figure 2 .

[0025] The markings in the attached drawings are: 1. tank body; 11. energy storage tank; 12. upper end cover; 13. lower end cover; 14. cotton cover; 15. upper air duct fixing plate; 16. lower air duct fixing plate; 17. communicating vessel; 18. outer hoop; 2. heating pipe; 3. air inlet pipe; 4. air outlet pipe; 5. nitrogen pipe; 6. circulation pipe. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the technical scheme in the specific implementation mode of the utility model is clearly and completely described below to further illustrate the utility model. Obviously, the specific implementation mode described is only a part of the implementation mode of the utility model, rather than all styles.

[0027] like Figure 1-4 As shown, the energy storage drying device of the utility model comprises a tank body 1, a heating pipe 2, an air inlet pipe 3, an air outlet pipe 4, a nitrogen pipe 5 and a circulation pipe 6;

[0028] The tank body 1 includes an energy storage tank 11, an upper end cover 12, a lower end cover 13, a cotton cover 14, an upper air duct fixing plate 15, a lower air duct fixing plate 16 and a connecting vessel 17. The top of the energy storage tank 11 is fixedly connected to the bottom of the upper end cover 12, and the bottom of the energy storage tank 11 is fixedly connected to the top of the lower end cover 13. The energy storage tank 11 is filled with molten salt. The high heat capacity and high thermal conductivity of the molten salt can store heat energy for a long time. The cotton cover 14 wraps the energy storage tank 11 for heat preservation. The cotton cover 14 The top is fixedly connected to the protruding outer edge of the upper end of the energy storage tank 11, the bottom of the cotton cover 14 is fixedly connected to the lower end cover 13, the upper air duct fixing plate 15 is fixedly connected to the upper side of the energy storage tank 11, and the lower air duct fixing plate 16 is fixedly connected to the lower side of the energy storage tank 11. The upper air duct fixing plate 15 and the lower air duct fixing plate 16 are both fixedly connected with a connecting vessel 17, and the connecting vessel 17 is provided with an internal channel. The upper parts of the energy storage tank 11 and the cotton cover 14 are provided with corresponding air inlet and air outlet ports;

[0029] There are a plurality of heating tubes 2, one end of which is fixedly connected to the upper air duct fixing plate 15 and is evenly distributed along the circumference of the annular upper air duct fixing plate 15;

[0030] The air inlet pipe 3, the air outlet pipe 4 and the nitrogen pipe 5 pass through the air inlet pipe port, the air outlet pipe port and the nitrogen pipe port respectively, and one end of each of them is fixedly connected to the upper part of the energy storage tank 11. Nitrogen is not easy to react chemically with other substances due to its stable chemical properties, and its thermal conductivity is relatively low. Therefore, the internal cavity of the energy storage tank 11 is filled with nitrogen, which can play a role in heat preservation and heat insulation;

[0031] The upper and lower ends of the circulation pipe 6 are respectively fixedly connected to the upper air duct fixing plate 15 and the lower air duct fixing plate 16, and the pipe mouth corresponds to the internal channel mouth of the communicating vessel 17. The two adjacent circulation pipes 6 are connected through the internal channel of the communicating vessel 17. The top of the first circulation pipe 6 is fixedly connected and connected to the air inlet pipe 3, and the top of the last circulation pipe 6 is fixedly connected and connected to the air outlet pipe 4. Compressed air can enter the circulation pipe 6 from the air inlet pipe 3 and be continuously heated by the molten salt inside the energy storage tank 11. After the heating is completed, it enters the air outlet pipe 4 through the circulation pipe 6 and finally enters the drying section.

[0032] In order to enhance the strength of the energy storage tank 11 , the tank body 1 further includes an outer hoop 18 , which surrounds the energy storage tank 11 and is fixedly connected to the outer wall of the energy storage tank 11 .

[0033] When using the energy storage drying device of the utility model, the air inlet pipe 3 is connected to the air compressor, the air outlet pipe 4 is connected to the drying section device, and the nitrogen pipe 5 is connected to the nitrogen generator. When drying operation is required, heating is performed in advance. As the heating pipe 2 continues to work, the molten salt inside the energy storage tank 11 continuously absorbs and stores heat energy until a predetermined temperature is reached. The compressed air from the air compressor flows through the air inlet pipe 3 and the circulation pipe 6. The heat energy released by the molten salt in the circulation pipe 6 is used to increase the temperature, and finally flows from the air outlet pipe 4 into the drying section. The low-temperature gas formed by the high-temperature hot air after the drying process can be returned to the energy storage tank 11 through the loop pipeline for recycling, which can reduce heat consumption.

[0034] The above describes the main technical features and basic principles of the utility model and the related advantages. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary specific implementations, and the utility model can be implemented in other specific forms without departing from the concept or basic features of the utility model. Therefore, no matter from which point of view, the above specific implementations should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.

[0035] In addition, it should be understood that although the present specification is described according to various implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An energy storage drying device, characterized in that: It comprises a tank body (1), a heating pipe (2), an air inlet pipe (3), an air outlet pipe (4) and a circulation pipe (6); The tank body (1) comprises an energy storage tank (11), an upper end cover (12), a lower end cover (13), an upper air duct fixing plate (15) and a lower air duct fixing plate (16); the top of the energy storage tank (11) is fixedly connected to the bottom of the upper end cover (12); the bottom of the energy storage tank (11) is fixedly connected to the top of the lower end cover (13); molten salt is contained in the energy storage tank (11); the upper air duct fixing plate (15) is fixedly connected to the upper side of the energy storage tank (11); the lower air duct fixing plate (16) is fixedly connected to the lower side of the energy storage tank (11); and the upper part of the energy storage tank (11) is provided with corresponding air inlet and air outlet pipe openings; A plurality of heating pipes (2) are provided, one end of which is fixedly connected to the upper air duct fixing plate (15) and is evenly distributed along the circumference of the annular upper air duct fixing plate (15); The air inlet pipe (3) and the air outlet pipe (4) pass through the air inlet pipe opening and the air outlet pipe opening respectively, and one end of each of them is fixedly connected to the upper part of the energy storage tank (11); The upper and lower ends of the circulation pipe (6) are respectively fixedly connected to the upper air duct fixing plate (15) and the lower air duct fixing plate (16), and two adjacent circulation pipes (6) are connected. The top of the first circulation pipe (6) is fixedly connected and connected to the air inlet pipe (3), and the top of the last circulation pipe (6) is fixedly connected and connected to the air outlet pipe (4), so that air can flow from the air inlet pipe (3) to the circulation pipe (6) and then to the air outlet pipe (4).

2. The energy storage drying device according to claim 1, characterized in that: The energy storage drying device also includes a nitrogen pipe (5), which is fixedly connected to the upper part of the energy storage tank (11) and communicated with the interior of the energy storage tank (11).

3. The energy storage drying device according to claim 1, characterized in that: The tank body (1) also includes a cotton cover (14), which wraps the energy storage tank (11), the top of the cotton cover (14) is fixedly connected to the protruding outer edge of the upper end of the energy storage tank (11), the bottom of the cotton cover (14) is fixedly connected to the lower end cover (13), and the upper part of the cotton cover (14) is provided with corresponding air inlet and air outlet ports.

4. The energy storage drying device according to claim 1, characterized in that: The upper air duct fixing plate (15) and the lower air duct fixing plate (16) are both fixedly connected with a communicating vessel (17), the communicating vessel (17) is provided with an internal passage, the upper and lower ends of the circulation pipe (6) correspond to the internal passage openings of the communicating vessel (17), and two adjacent circulation pipes (6) are connected through the internal passage of the communicating vessel (17).

5. The energy storage drying device according to claim 1, characterized in that: The tank body (1) further comprises an outer hoop (18), which surrounds the energy storage tank (11) and is fixedly connected to the outer wall of the energy storage tank (11).

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