Air duct type air circulation electric heater

Abstract

The utility model relates to the technical field of electric heaters, and discloses an air duct type air circulation electric heater which comprises an electric heater body, a sealing plate is fixed to one side of the electric heater body through a sliding device, and an upper adjusting block is slidably connected to the upper portion of the interior of the electric heater body. According to the utility model, different heating pipe main bodies are fixed between different lower adjusting blocks and upper adjusting blocks, the lower adjusting blocks and the upper adjusting blocks are respectively arranged at the upper part and the lower part in the electric heater main body in a sliding manner, and then the electric heater main body is sealed and fixed through the sealing plate; the problems that a heating pipe in an existing air duct type electric heater is fixed in the heater, so that the heating pipe is prone to being damaged due to high temperature, vibration and other factors in the long-term use process of the electric heater, the whole heater or complex parts need to be disassembled during replacement, the damaged heating pipe cannot be disassembled singly, and the maintenance cost is high, and the maintenance time is long are solved.

Description

Technical Field

[0001] The utility model application relates to the technical field of electric heaters, in particular to a duct-type air circulation electric heater. Background Art

[0002] The duct type electric heater consists of two parts: the main body and the control system. The heating element adopts stainless steel pipe as the protective casing, high temperature resistance alloy wire, crystalline magnesium oxide powder, and is formed by the compression process. The control part adopts advanced digital circuit, integrated circuit trigger, high reverse voltage thyristor, etc. to form an adjustable temperature measurement and constant temperature system to ensure the normal operation of the electric heater.

[0003] The heating tubes in current duct-type electric heaters are fixed inside the heater, which makes them susceptible to damage due to high temperature, vibration and other factors during long-term use. In addition, replacement requires disassembly of the entire heater or complex components, and it is impossible to remove damaged heating tubes individually, resulting in high maintenance costs and long maintenance time. Summary of the Invention

[0004] In order to solve the problem that the heating tube in the current duct type electric heater is fixed inside the heater, which makes the heating tube easily damaged due to high temperature, vibration and other factors during long-term use of the electric heater, and the entire heater or complex components need to be disassembled for replacement, and the damaged heating tube cannot be removed individually, resulting in high maintenance cost and long time, the utility model provides a duct type air circulation electric heater to solve the above problems.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A duct-type air circulation electric heater comprises an electric heater body, a sealing plate is fixed to one side of the electric heater body via a sliding device, an upper adjustment block is slidably connected to the upper part of the electric heater body, and a lower adjustment block is slidably connected to the lower part of the electric heater body, a heating tube body is fixed between the upper and lower adjustment blocks, a sliding groove is provided inside the electric heater body that matches the shape of the upper and lower adjustment blocks, and toggle plates are symmetrically fixed on both sides of the upper adjustment block.

[0007] Furthermore, an adjusting gear is rotatably connected inside the upper adjusting block, and a first movable plate and a second movable plate are respectively engaged and connected above and below the adjusting gear. The first movable plate and the second movable plate are slidingly connected inside the upper adjusting block, and an adjusting knob is fixed at one end of the adjusting gear extending to the outside of the electric heater body.

[0008] Furthermore, the sliding device includes a rotating block, which is fixed to the bottom end of the electric heater body near one side of the sealing plate, the bottom end of the sealing plate is rotatably connected to the rotating block, the sealing plate and the top surface of the electric heater body are threadedly connected with a fixing screw, and the sealing plate is fixedly connected to the electric heater body through the fixing screw.

[0009] Furthermore, a plurality of scale grooves are provided on both sides of the upper portion of the electric heater body, and scale pointers are fixed on both sides of the upper portion of the upper adjustment block.

[0010] Furthermore, the first movable plate and the second movable plate are both L-shaped, and a limiting plate is fixed on one end of the first movable plate and the second movable plate.

[0011] Furthermore, one side of the upper portion of the electric heater body close to the sealing plate is rounded, and an arc matching the rounded corner of the electric heater body is provided inside the sealing plate close to the rounded corner of the electric heater body, and the fixing screw is an embedded hexagonal screw.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. In the utility model, different heating tube bodies are fixed between different lower adjusting blocks and upper adjusting blocks, and the lower adjusting blocks and the upper adjusting blocks are slidably arranged above and below the interior of the electric heater body respectively, and the electric heater body is sealed and fixed by a sealing plate. This solves the problem that the heating tubes in the current duct type electric heater are fixed inside the heater, which makes the heating tubes easily damaged due to high temperature, vibration and other factors during long-term use of the electric heater, and the entire heater or complex components need to be disassembled for replacement, and the damaged heating tubes cannot be removed individually, resulting in high maintenance costs and long time.

[0014] 2. In the present invention, by turning the adjusting knob, the adjusting gear drives the first movable plate and the second movable plate to move simultaneously, so that the intervals between different upper adjustment blocks can be easily controlled, so that the staff can adjust the number of heating tube bodies inside the electric heater body and the distance between different heating tube bodies, thereby adjusting the electric heating heating amount and ventilation amount, so that the heating efficiency of the electric heater body is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 is a schematic diagram of a three-dimensional structure according to an embodiment of the present application;

[0017] Figure 2 yes Figure 1 A schematic three-dimensional diagram of the structure of the regulating device in the embodiment shown;

[0018] Figure 3 yes Figure 1 A schematic cross-sectional perspective view of the structure of the regulating device in the illustrated embodiment;

[0019] Figure 4 yes Figure 1 Schematic diagram of the three-dimensional structure of the sealing assembly in the embodiment shown.

[0020] The meanings of the reference numerals in the figure are as follows: 1. Electric heater body; 2. Sealing plate; 3. Upper adjusting block; 4. Lower adjusting block; 5. Heating tube body; 6. Adjusting gear; 7. First movable plate; 8. Second movable plate; 9. Limiting plate; 10. Toggle plate; 11. Scale pointer; 12. Adjusting knob; 13. Scale groove; 14. Rotating block; 15. Fixing screw. DETAILED DESCRIPTION

[0021] In order to make the purpose, features, and advantages of this application more obvious and easy to understand, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the embodiments described below are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A duct-type air circulation electric heater includes an electric heater main body 1, a sealing plate 2 is fixed to one side of the electric heater main body 1 through a sliding device, an upper adjusting block 3 is slidably connected to the upper part of the electric heater main body 1, and a lower adjusting block 4 is slidably connected to the lower part of the electric heater main body 1. A heating tube main body 5 is fixed between the upper adjusting block 3 and the lower adjusting block 4. A slide groove that matches the shape of the upper adjusting block 3 and the lower adjusting block 4 is opened inside the electric heater main body 1, and toggle plates 10 are symmetrically fixed on both sides of the upper adjusting block 3, so that the heating tube main body 5 can be disassembled separately.

[0023] Specifically, the sliding device includes a rotating block 14, which is fixed to the bottom end of the electric heater body 1 near the side of the sealing plate 2. The bottom end of the sealing plate 2 is rotatably connected to the rotating block 14. The sealing plate 2 and the top surface of the electric heater body 1 are threadedly connected with a fixing screw 15. The sealing plate 2 is fixedly connected to the electric heater body 1 through the fixing screw 15. A number of scale grooves 13 are provided on both sides above the electric heater body 1. Scale pointers 11 are fixed above both sides of the upper adjustment block 3. One side of the electric heater body 1 near the sealing plate 2 is rounded, and the inside of the sealing plate 2 near the rounded corner of the electric heater body 1 is provided with an arc that matches the rounded corner of the electric heater body 1. The fixing screw 15 is an embedded hexagonal screw, which is convenient for disassembly and assembly of the sealing plate 2.

[0024] As an optimization solution, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the upper adjustment block 3 is internally connected to an adjustment gear 6, and the first movable plate 7 and the second movable plate 8 are respectively engaged with the upper and lower parts of the adjustment gear 6. The first movable plate 7 and the second movable plate 8 are slidingly connected to the upper adjustment block 3. An adjustment knob 12 is fixed to one end of the adjustment gear 6 extending to the outside of the electric heater body 1, so that the distance between different heating tube bodies 5 can be adjusted.

[0025] Specifically, the first movable plate 7 and the second movable plate 8 are both L-shaped, and a limiting plate 9 is fixed on one end of the first movable plate 7 and the second movable plate 8 to prevent the limiting plate 9 from escaping from the upper adjustment block 3.

[0026] Working principle: By fixing the upper and lower ends of different heating tube bodies 5 on the upper adjustment block 3 and the lower adjustment block 4 respectively, and then sliding the different upper adjustment blocks 3 and the lower adjustment blocks 4 in sequence inside the electric heater body 1, according to the number and distance of the heating tube bodies 5 required inside the electric heater body 1, by rotating the adjusting knob 12, the adjusting knob 12 drives the adjusting gear 6 to rotate, so that the adjusting gear 6 drives the first movable plate 7 and the second movable plate 8 to move simultaneously, and at the same time, the distance between the different upper adjustment blocks 3 is judged according to the position between the scale pointer 11 and the scale groove 13, which is convenient for the staff to adjust. When the upper adjustment block 3 needs to be moved, the upper adjustment block 3 can be driven to slide inside the electric heater body 1 by toggling the toggle plate 10. When the heating tube body 5 inside the electric heater body 1 is set, by moving the sealing plate 2, one end of the sealing plate 2 rotates inside the rotating block 14, so that the other end of the sealing plate 2 moves toward the top surface of the electric heater body 1 and closes. After closing, the sealing plate 2 is fixedly connected to the electric heater body 1 by the fixing screw 15.

[0027] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and scope of the appended claims are intended to be included herein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0028] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A duct-type air circulation electric heater, comprising an electric heater body (1), characterized in that: A sealing plate (2) is fixed to one side of the electric heater body (1) through a sliding device, an upper adjustment block (3) is slidably connected to the upper part of the electric heater body (1), and a lower adjustment block (4) is slidably connected to the lower part of the electric heater body (1), a heating tube body (5) is fixed between the upper adjustment block (3) and the lower adjustment block (4), a sliding groove that matches the shape of the upper adjustment block (3) and the lower adjustment block (4) is opened inside the electric heater body (1), and a toggle plate (10) is symmetrically fixed on both sides of the upper adjustment block (3).

2. The duct type air circulation electric heater according to claim 1, characterized in that: The upper adjustment block (3) is internally connected to an adjustment gear (6) for rotation, and a first movable plate (7) and a second movable plate (8) are respectively meshed and connected above and below the adjustment gear (6), and the first movable plate (7) and the second movable plate (8) are slidably connected to the interior of the upper adjustment block (3), and an adjustment knob (12) is fixed to one end of the adjustment gear (6) extending to the outside of the electric heater body (1).

3. The duct-type air circulation electric heater according to claim 1, characterized in that: The sliding device includes a rotating block (14), the rotating block (14) is fixed to the bottom end of the electric heater body (1) near one side of the sealing plate (2), the bottom end of the sealing plate (2) is rotatably connected to the rotating block (14), the sealing plate (2) and the top surface of the electric heater body (1) are threadedly connected with a fixing screw (15), and the sealing plate (2) is fixedly connected to the electric heater body (1) through the fixing screw (15).

4. The duct type air circulation electric heater according to claim 1, characterized in that: A plurality of scale grooves (13) are provided on both sides of the upper portion of the electric heater body (1), and scale pointers (11) are fixed on both sides of the upper portion of the upper adjustment block (3).

5. The duct-type air circulation electric heater according to claim 2, characterized in that: The first movable plate (7) and the second movable plate (8) are both L-shaped, and a limiting plate (9) is fixed on one end of each of the first movable plate (7) and the second movable plate (8).

6. The duct-type air circulation electric heater according to claim 3, characterized in that: One side of the electric heater body (1) above the sealing plate (2) is rounded, and an arc that matches the rounded corner of the electric heater body (1) is provided inside the sealing plate (2) near the rounded corner. The fixing screw (15) is an embedded hexagonal screw.

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