Air duct type electric heater capable of uniformly heating

Abstract

The utility model discloses an air duct type electric heater capable of heating uniformly, and relates to the technical field of air duct type electric heaters. The device comprises a heating box and a hollow rectangular box body in the heating box, the left end and the right end of the heating box are hollowed out, four supporting legs are fixedly installed at the bottom of the heating box, three rows of heating pipes distributed at equal intervals are fixedly installed in the heating box, and a left side plate is fixedly installed at the left end of the heating box. If the two groups of air guide port assemblies are adjusted to be in an open state, the air outlet assembly adjacent to the flow dividing assembly is adjusted to be closed, the air outlet assembly far away from the flow dividing assembly is adjusted to be opened, air in the heating box flows through the three rows of heating pipes to be heated, and finally the air is exhausted through the air outlet assembly far away from the flow dividing assembly and the air outlet cover. The limiting assembly is mainly used for limiting the current state of each air outlet assembly and the current state of each air guide opening assembly, and therefore smooth circulation of air is guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of duct-type electric heaters, and specifically to a duct-type electric heater that provides uniform heating. Background Technology

[0002] Duct-type electric heaters are high-efficiency and reliable air heating devices widely used in industrial ventilation, drying, and HVAC systems. Their working principle involves converting electrical energy into heat energy through a built-in electric heating element, rapidly and evenly heating the air flowing through the duct. The equipment uses high-quality alloy resistance wire combined with insulating materials, along with a high-thermal-conductivity shell design, ensuring high thermal efficiency and a long service life.

[0003] However, in the process of heating air, traditional duct-type electric heaters cannot dynamically adjust the air flow path according to the heating demand, which easily leads to insufficient residence time of some air in the duct or uneven airflow distribution, thus causing local insufficient heating. Therefore, a duct-type electric heater with uniform heating is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that traditional duct-type electric heaters, due to the inability to dynamically adjust the airflow path according to heating requirements, easily lead to insufficient residence time of some air in the duct or uneven airflow distribution, resulting in insufficient local heating. This invention provides a duct-type electric heater with uniform heating.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A uniformly heated duct-type electric heater includes a heating box, a hollow rectangular box with open ends, four support legs fixedly installed at the bottom, three rows of equidistant heating tubes fixedly installed inside the heating box, a left side plate fixedly installed at the left end of the heating box with a flow-dispersing component, and an air suction hood fixedly installed on the side wall of the flow-dispersing component, a right side plate fixedly installed at the right end of the heating box with two sets of air outlet components, and an air outlet hood fixedly installed on the side wall of the right side plate, two partition plates fixedly installed inside the heating box, each partition plate being located between two adjacent rows of heating tubes, and an air guide assembly installed on each partition plate, a pipe connecting the heating box and the air outlet hood fixedly installed at the top of the heating box, a limit component installed at the bottom of the heating box, and a solenoid valve installed at the inlet end of the pipe.

[0007] Furthermore, the diversion component includes an air inlet, an air inlet is provided on the side wall of the left side plate, a diversion plate is fixedly installed inside the air inlet, and a number of circular holes distributed in a rectangular array are provided on the side wall of the diversion plate.

[0008] Furthermore, the diversion assembly also includes a strip-shaped hole. The inner wall of the air inlet has a strip-shaped hole, and a sealing plate is movably installed inside the strip-shaped hole. A block one is fixedly installed on the top of the left side plate, and a cylinder is fixedly installed on the side wall of the block one. A block two is fixedly connected to the output end of the cylinder, and the block two is fixedly connected to the sealing plate.

[0009] Furthermore, the air outlet assembly includes an air outlet, with two air outlets opened on the side wall of the right side plate. Each air outlet has a rubber frame inside, and a filling plate is fixedly installed inside each rubber frame. Two handwheels are movably installed at the bottom of the heating box, which respectively drive the two filling plates to rotate. An L-shaped rod is fixedly installed on the side wall of each handwheel. Two arc-shaped holes are opened at the bottom of the heating box, and the top ends of the two L-shaped rods are movably installed inside the two arc-shaped holes.

[0010] Furthermore, the air duct assembly includes an air duct, each partition plate has an air duct on its side wall, each air duct has a rubber frame II inside, each rubber frame II has a filling plate II fixedly installed inside, the bottom of the heating box has two handwheels II that drive the two filling plates II to rotate respectively, each handwheel II has an L-shaped rod II fixedly installed on its side wall, the bottom of the heating box has two arc-shaped holes II, and the top ends of the two L-shaped rods II are respectively movably installed inside the two arc-shaped holes II.

[0011] Furthermore, the limiting component includes a block three, with blocks three fixedly installed on the front and rear walls of the heating box respectively. An electric telescopic rod is fixedly installed at the bottom of each block three, and a block four is fixedly connected to the output end of each electric telescopic rod. A lifting plate is fixedly installed between two blocks four, and four square holes are opened at the top of the lifting plate. Four support legs pass through the four square holes respectively.

[0012] The beneficial effects of this utility model are as follows:

[0013] This invention first activates the heating element for heating, then activates the suction hood to draw air into the heating chamber. At this time, the air inside the suction hood passes through the distribution assembly and enters the heating chamber, where it is dispersed for better heating. Inside the heating chamber, the airflow path can be adjusted according to heating requirements. If the two sets of air guide assemblies are closed and the air outlet assembly adjacent to the distribution assembly is opened, while the air outlet assembly furthest from the distribution assembly is closed, the air inside the heating chamber flows through a row of heating elements for heating, and finally is discharged through the air outlet assembly adjacent to the distribution assembly and the exhaust hood. Alternatively, if the two sets of air outlet assemblies are closed and the air guide assembly furthest from the distribution assembly is closed... When the air vent assembly adjacent to the diversion assembly is adjusted to open, the air inside the heating chamber flows through two rows of heating tubes for heating, and is finally discharged through the pipes and the exhaust hood. The solenoid valve can open or close according to whether the pipes are delivering air. If both sets of air vent assemblies are adjusted to open and the air outlet assembly adjacent to the diversion assembly is adjusted to close, while the air outlet assembly far from the diversion assembly is adjusted to open, the air inside the heating chamber flows through three rows of heating tubes for heating, and is finally discharged through the air outlet assembly far from the diversion assembly and the exhaust hood. The main function of the limiting assembly is to limit the current state of each set of air outlet assembly and each set of air vent assembly, thereby ensuring smooth airflow. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the current splitter component of this utility model;

[0016] Figure 3 This is a schematic diagram of the air outlet component of this utility model;

[0017] Figure 4 This is a schematic diagram of the air guide assembly of this utility model;

[0018] Figure 5 This is a schematic diagram of the limiting component of this utility model;

[0019] Reference numerals: 1. Heating box; 2. Support leg; 3. Heating tube; 4. Left side plate; 5. Diverter assembly; 501. Air inlet; 502. Diverter plate; 503. Round hole; 504. Strip hole; 505. Sealing plate; 506. Block one; 507. Cylinder; 508. Block two; 6. Suction hood; 7. Right side plate; 8. Air outlet assembly; 801. Air outlet; 802. Rubber frame one; 803. Filler plate one; 804. Handwheel one; 805. L-shaped 1. Rod 1; 806. Arc-shaped hole 1; 9. Air outlet hood; 10. Divider plate; 11. Air guide assembly; 1101. Air guide; 1102. Rubber frame 2; 1103. Filler plate 2; 1104. Handwheel 2; 1105. L-shaped rod 2; 1106. Arc-shaped hole 2; 12. Pipe; 13. Limiting assembly; 1301. Block 3; 1302. Electric telescopic rod; 1303. Block 4; 1304. Lifting plate; 1305. Square hole; 14. Solenoid valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They 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. Therefore, they should not be construed as limitations on this utility model.

[0024] like Figures 1 to 5 As shown, a duct-type electric heater for uniform heating includes a heating box 1, which is a hollow rectangular box with open ends. Four support legs 2 are fixedly installed at the bottom of the heating box 1. Three rows of equidistant heating tubes 3 are fixedly installed inside the heating box 1. A left side plate 4 is fixedly installed at the left end of the heating box 1, and a flow-dispersing assembly 5 is provided on the left side plate 4. A suction hood 6 is fixedly installed on the side wall of the flow-dispersing assembly 5. A right side plate 7 is fixedly installed at the right end of the heating box 1, and two sets of air outlet assemblies 8 are provided on the right side plate 7. An air outlet hood 9 is fixedly installed on the side wall of the right side plate 7. Two partition plates 10 are fixedly installed inside the heating box 1. Each partition plate 10 is located between two adjacent rows of heating tubes 3. Each partition plate 10 is equipped with an air guide assembly 11. A pipe 12 connecting the heating box 1 and the air outlet hood 9 is fixedly installed on the top of the heating box 1. A limit assembly 13 is installed at the bottom of the heating box 1. A solenoid valve 14 is installed at the inlet end of the pipe 12. It should be noted that the heating tubes 3 are started first to heat the heating. Then, the air suction hood 6 is started to draw air into the interior of the heating box 1. At this time, the air inside the air suction hood 6 passes through the diversion assembly 5 and enters the interior of the heating box 1, where it is dispersed for better heating. The airflow path inside the heating chamber 1 can be adjusted according to heating requirements. If the two sets of air vent assemblies 11 are closed and the air outlet assembly 8 adjacent to the diversion assembly 5 is opened, while the air outlet assembly 8 furthest from the diversion assembly 5 is closed, the air inside the heating chamber 1 flows through a row of heating tubes 3 for heating, and is finally discharged through the air outlet assembly 8 adjacent to the diversion assembly 5 and the air outlet hood 9. Alternatively, if the two sets of air outlet assemblies 8 are closed and the air vent assembly 11 furthest from the diversion assembly 5 is opened, while the air vent assembly 11 adjacent to the diversion assembly 5 is opened, the air inside the heating chamber 1 flows through two rows of heating tubes 3 for heating. The heat is finally discharged through pipe 12 and air hood 9. Solenoid valve 14 can be opened or closed according to whether pipe 12 is supplying air. If the two sets of air guide assemblies 11 are adjusted to be open and the air outlet assembly 8 adjacent to the diversion assembly 5 is adjusted to be closed, and the air outlet assembly 8 far away from the diversion assembly 5 is adjusted to be open, the air inside the heating box 1 flows through the three rows of heating tubes 3 for heating, and is finally discharged through the air outlet assembly 8 far away from the diversion assembly 5 and air hood 9. The main function of the limiting assembly 13 is to limit the current state of each set of air outlet assembly 8 and each set of air guide assembly 11, thereby ensuring smooth airflow.

[0025] The diversion component 5 includes an air inlet 501. The side wall of the left side plate 4 has an air inlet 501. A diversion plate 502 is fixedly installed inside the air inlet 501. The side wall of the diversion plate 502 has a number of circular holes 503 arranged in a rectangular array. It should be noted that the suction hood 6 draws air and sends it into the interior of the heating box 1. At this time, the air inside the suction hood 6 passes through the circular holes 503 and enters the interior of the heating box 1, where it will be dispersed for better heating.

[0026] The diversion assembly 5 also includes a strip-shaped hole 504. The inner wall of the air inlet 501 has a strip-shaped hole 504. A sealing plate 505 is movably installed inside the strip-shaped hole 504. A block 1 506 is fixedly installed on the top of the left side plate 4. A cylinder 507 is fixedly installed on the side wall of the block 1 506. A block 2 508 is fixedly connected to the output end of the cylinder 507. The block 2 508 is fixedly connected to the sealing plate 505. It should be noted that the cylinder 507 can be extended or retracted according to the actual situation. The extension or retraction of the cylinder 507 drives the block 2 508 and the sealing plate 505 to reciprocate linearly, so that the sealing plate 505 stops at a suitable position to close the cylinder 507. The degree to which the cylinder 507 blocks the round hole 503 is used to control the speed at which air enters the interior of the heating box 1.

[0027] The air outlet assembly 8 includes an air outlet 801. Two air outlets 801 are formed on the side wall of the right side plate 7. Each air outlet 801 has a rubber frame 802 inside, and a filling plate 803 is fixedly installed inside each rubber frame 802. Two handwheels 804 are movably installed at the bottom of the heating box 1, each driving the two filling plates 803 to rotate. An L-shaped rod 805 is fixedly installed on the side wall of each handwheel 804. Two arc-shaped holes 8 are formed at the bottom of the heating box 1. 06. The tops of the two L-shaped rods 805 are respectively movably installed inside the two arc-shaped holes 806. It should be noted that by turning the handwheel 804 ninety degrees, the corresponding filling plate 803 can be rotated synchronously. After the filling plate 803 rotates ninety degrees, the corresponding air outlet 801 can be opened. The rotation of the handwheel 804 can also drive the L-shaped rod 805 connected to it to rotate synchronously. With the assistance of the L-shaped rod 805 and the arc-shaped hole 806, the handwheel 804 can be quickly positioned.

[0028] The air duct assembly 11 includes an air duct 1101. Each partition plate 10 has an air duct 1101 on its side wall. Each air duct 1101 has a rubber frame 1102 inside, and a filling plate 1103 is fixedly installed inside each rubber frame 1102. Two handwheels 1104 are movably installed at the bottom of the heating box 1, each driving the two filling plates 1103 to rotate. An L-shaped rod 1105 is fixedly installed on the side wall of each handwheel 1104. Two arc-shaped holes 1 are opened at the bottom of the heating box 1. 106. The tops of the two L-shaped rods 1105 are respectively movably installed inside the two arc-shaped holes 1106. It should be noted that by turning the handwheel 1104 90 degrees, the corresponding filling plate 1103 can be rotated synchronously. After the filling plate 1103 rotates 90 degrees, the corresponding air guide 1101 can be opened. The rotation of the handwheel 1104 can also drive the L-shaped rod 1105 connected to it to rotate synchronously. With the assistance of the L-shaped rod 1105 and the arc-shaped hole 1106, the handwheel 1104 can be quickly positioned.

[0029] The limiting component 13 includes a block three 1301. Block three 1301 is fixedly installed on the front and rear walls of the heating box 1. An electric telescopic rod 1302 is fixedly installed at the bottom of each block three 1301. A block four 1303 is fixedly connected to the output end of each electric telescopic rod 1302. A lifting plate 1304 is fixedly installed between two blocks four 1303. The top of the lifting plate 1304 has four square holes 1305. The four support legs 2 pass through the four square holes 1305 respectively. It should be noted that after the rotation angle of the handwheel one 804 and the handwheel two 1104 is adjusted, the two sets of electric telescopic rods 1302 are immediately activated to retract, which can drive the lifting plate 1304 to move upward and squeeze and fix each handwheel one 804 and each handwheel two 1104 to prevent rotation.

[0030] In summary:

[0031] First, heating element 3 is activated for heating. Then, suction hood 6 is activated to draw air into the heating chamber 1. At this time, the air inside suction hood 6 passes through the diversion assembly 5 and enters the heating chamber 1, where it is dispersed for better heating. The air flow path inside the heating chamber 1 can be changed according to heating requirements. If the two sets of air guide assemblies 11 are closed and the air outlet assembly 8 adjacent to the diversion assembly 5 is opened, while the air outlet assembly 8 far from the diversion assembly 5 is closed, the air inside the heating chamber 1 flows through a row of heating elements 3 for heating, and finally is discharged through the air outlet assembly 8 adjacent to the diversion assembly 5 and the air outlet hood 9. If the two sets of air outlet assemblies 8 are closed and the air guide assembly 11 far from the diversion assembly 5 is opened, the air flow path inside the heating chamber 1 can be changed according to heating requirements. The air vent assembly 11 adjacent to the diversion assembly 5 is adjusted to open, and the air inside the heating box 1 flows through two rows of heating tubes 3 for heating, and is finally discharged through the pipe 12 and the air outlet hood 9. The solenoid valve 14 can be opened or closed according to whether the pipe 12 is delivering air. If the two sets of air vent assemblies 11 are adjusted to open and the air outlet assembly 8 adjacent to the diversion assembly 5 is adjusted to close, and the air outlet assembly 8 far away from the diversion assembly 5 is adjusted to open, the air inside the heating box 1 flows through three rows of heating tubes 3 for heating, and is finally discharged through the air outlet assembly 8 far away from the diversion assembly 5 and the air outlet hood 9. The main function of the limiting assembly 13 is to limit the current state of each set of air outlet assembly 8 and each set of air vent assembly 11, thereby ensuring smooth airflow.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A heating uniformity air duct type electric heater, characterized by, The heating box (1) is a rectangular box with a hollow interior. Both the left and right ends of the heating box (1) are hollow. Four support legs (2) are fixedly installed at the bottom of the heating box (1). Three rows of equally spaced heating tubes (3) are fixedly installed inside the heating box (1). A left side plate (4) is fixedly installed at the left end of the heating box (1). A flow-dispersing component (5) is provided on the left side plate (4). A suction hood (6) is fixedly installed on the side wall of the flow-dispersing component (5). A right side plate (7) is fixedly installed at the right end of the heating box (1). Two sets of air outlet assemblies (8) are provided on the top, and an air outlet hood (9) is fixedly installed on the side wall of the right side plate (7). Two partition plates (10) are fixedly installed inside the heating box (1). Each partition plate (10) is located between two adjacent rows of heating pipes (3). Each partition plate (10) is provided with an air guide assembly (11). A pipe (12) connecting the heating box (1) and the air outlet hood (9) is fixedly installed on the top of the heating box (1). A limit assembly (13) is provided at the bottom of the heating box (1). A solenoid valve (14) is provided at the input end of the pipe (12).

2. The electric heater of uniform heating according to claim 1, wherein The diversion component (5) includes an air inlet (501), and the side wall of the left side plate (4) is provided with an air inlet (501). A diversion plate (502) is fixedly installed inside the air inlet (501), and the side wall of the diversion plate (502) is provided with a number of circular holes (503) arranged in a rectangular array.

3. The duct-type electric heater with uniform heating according to claim 2, characterized in that, The diversion component (5) also includes a strip hole (504). The inner wall of the air inlet (501) is provided with a strip hole (504). A sealing plate (505) is movably installed inside the strip hole (504). A block one (506) is fixedly installed on the top of the left side plate (4). A cylinder (507) is fixedly installed on the side wall of the block one (506). A block two (508) is fixedly connected to the output end of the cylinder (507). The block two (508) is fixedly connected to the sealing plate (505).

4. The electric heater of uniform heating according to claim 1, wherein The air outlet assembly (8) includes an air outlet (801). Two air outlets (801) are opened on the side wall of the right side plate (7). Each air outlet (801) is provided with a rubber frame (802). Each rubber frame (802) is fixedly installed with a filling plate (803). Two handwheels (804) are movably installed at the bottom of the heating box (1) to drive the two filling plates (803) to rotate. Each handwheel (804) is fixedly installed with an L-shaped rod (805) on the side wall. Two arc-shaped holes (806) are opened at the bottom of the heating box (1). The tops of the two L-shaped rods (805) are movably installed inside the two arc-shaped holes (806).

5. The electric heater of uniform heating according to claim 1, wherein The air duct assembly (11) includes an air duct (1101). Each partition plate (10) has an air duct (1101) on its side wall. Each air duct (1101) has a rubber frame (1102) inside. Each rubber frame (1102) has a filling plate (1103) fixedly installed inside. The bottom of the heating box (1) has two handwheels (1104) that drive the two filling plates (1103) to rotate respectively. Each handwheel (1104) has an L-shaped rod (1105) fixedly installed on its side wall. The bottom of the heating box (1) has two arc-shaped holes (1106). The tops of the two L-shaped rods (1105) are movably installed inside the two arc-shaped holes (1106).

6. The electric heater of uniform heating according to claim 1, wherein The limiting component (13) includes a block three (1301). Block three (1301) is fixedly installed on the front and rear walls of the heating box (1). An electric telescopic rod (1302) is fixedly installed at the bottom of each block three (1301). A block four (1303) is fixedly connected to the output end of each electric telescopic rod (1302). A lifting plate (1304) is fixedly installed between two blocks four (1303). Four square holes (1305) are opened on the top of the lifting plate (1304). Four support legs (2) pass through the four square holes (1305) respectively.

Images