Combined electric heating device

Abstract

The utility model discloses a combined electric heating device which comprises heating structures which are sequentially stacked, a heating core piece is fixed between every two adjacent heating structures, and each heating structure comprises a heating bottom shell, a heating surface cover, a sealing washer, a locking bolt and a connecting bolt. Heating concave cavities are formed in the top surface of the heating bottom shell and the bottom surface of the heating surface cover; water inlets and outlets communicated with the heating concave cavities are fixed at the end parts of the heating bottom shell and the heating surface cover; a connecting hole site is arranged on the connecting convex block; the heating core pieces are located between the adjacent heating structures, so that the heat absorption rate is greatly improved. The combined heating channel is reasonable in structural arrangement, can be combined into a whole heating channel, is convenient to disassemble and assemble to overhaul and maintain the interior of the heating channel, greatly improves the selectivity of surface treatment in the heating channel and the convenience and accuracy of quality detection, meets the requirement that different numbers of heating structures are connected and used into a whole, and improves the working efficiency. And due to the uniformity of the heating structure, automatic large-scale production is facilitated, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric heating, and in particular relates to a combined electric heating device. Background Art

[0002] When heating the liquid, a corresponding heating device is required. The heating devices in the prior art are mostly integral structures such as castings or coils. Although they can meet the general usage requirements, they are prone to clogging or scaling during use, which is not conducive to unblocking and maintenance, as well as replacement and maintenance of the heating chip. It is not easy to detect the standardization of the internal structure, and it is difficult to achieve surface treatments such as internal corrosion protection and heat conduction, which reduces the service life and increases the maintenance cost to a certain extent. At the same time, they cannot be stacked and assembled as needed, which will affect their scope of application to a certain extent and limit their practicality. Summary of the invention

[0003] The utility model aims to provide a combined electric heating device which has a reasonable structure and is conducive to assembly.

[0004] The technical solution to achieve the purpose of the utility model is a combined electric heating device, comprising a plurality of heating structures stacked in sequence, with heating cores fixed between adjacent heating structures, the heating structure comprising a heating bottom shell, a heating surface cover, a sealing gasket, a plurality of locking bolts and a plurality of connecting bolts;

[0005] The top surface of the heating bottom shell and the bottom surface of the heating surface cover are both provided with a heating cavity, and the ends of the heating bottom shell and the heating surface cover are fixed with a water inlet and outlet connected with the heating cavity;

[0006] The edges of the heating bottom shell and the heating surface cover are evenly provided with matching locking holes;

[0007] The edges of the heating bottom shell and the heating surface cover are provided with matching connecting protrusions, and the connecting protrusions are provided with connecting holes;

[0008] The heating bottom shell is pressed against the heating surface cover, and the locking bolt passes through the locking hole and is locked and fixed, and the sealing gasket is located at the connection between the heating bottom shell and the heating surface cover;

[0009] Adjacent heating structures are stacked, and the connecting bolts pass through the connecting holes and are locked and fixed.

[0010] Further preferably, the outer surfaces of the heating bottom shell and the heating surface cover are both fixed with a plurality of parallel heat-conducting convex strips;

[0011] The heating core is located between adjacent heat-conducting convex strips.

[0012] It is further preferred that: a plurality of heat-conducting fins for increasing the heat-conducting contact area are provided on the inner surfaces of the heating bottom shell and the heating surface cover;

[0013] The heat-conducting fins are arranged in parallel and their ends extend to the edges of the water inlet and outlet.

[0014] It is further preferred that: a raised ring is provided at one end of the water inlet and outlet, and a recessed area is provided at the other end of the water inlet and outlet;

[0015] Adjacent heating structures are overlapped, and the raised ring of one heating structure is inserted into the recessed area of ​​another heating structure.

[0016] Further preferably, an annular sealing groove is provided on the outer wall of the raised ring, and a sealing rubber ring is provided in the annular sealing groove;

[0017] The raised ring of one heating structure is sealed and attached to the inner wall of the recessed area of ​​another heating structure through a sealing rubber ring.

[0018] More preferably, the number of the heating structures is greater than two.

[0019] It is further preferred that the heating bottom shell and the heating surface cover are both metal structures.

[0020] The utility model has positive effects: the structure of the utility model is reasonably arranged, and matching locking holes are evenly arranged on the edges of the heating bottom shell and the heating surface cover, and at the same time, they can be combined into a complete heating channel with the help of locking bolts and sealing washers, which is convenient for disassembly and assembly to inspect and maintain the inside of the heating channel. At the same time, connecting holes are arranged on the edges of the heating bottom shell and the heating surface cover, and with the help of connecting bolts, multiple heating structures can be stacked and fixedly connected, which also greatly improves the selectivity of surface treatment inside the heating channel and the convenience and accuracy of quality inspection, and can meet the needs of different numbers of heating structures to be connected and used as a whole, and with multiple heating cores, the heating cores are located between adjacent heating structures, which greatly improves the heat absorption rate, is beneficial to improving the heating efficiency and heating uniformity, and is also convenient for replacing the heating cores. Due to the uniformity of the heating structure, it is also convenient for automated large-scale production, which is beneficial to improving production efficiency, and has strong applicability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the split structure of the utility model;

[0024] Figure 3 for Figure 1 AA section diagram of the structure.

[0025] Figure numerals: heating structure 1, heating bottom shell 11, heating surface cover 12, sealing gasket 13, locking bolt 14, connecting bolt 15, heating core 2, heating cavity 3, water inlet and outlet 4, locking hole 5, connecting protrusion 6, connecting hole 7, heat conductive protrusion 8, heat conductive protrusion 9, raised ring 10, recessed area 16, annular sealing groove 17, sealing rubber ring 18. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0027] See Figures 1 to 3 As shown, a combined electric heating device includes a plurality of heating structures 1 stacked in sequence, and a heating core 2 is fixed between adjacent heating structures. In this embodiment, the number of the heating structures is greater than two. The heating bottom shell and the heating surface cover are both metal structures. The heating core is a conventional structure of the prior art, specifically an electric heating tube, an electric heating block, etc., which is simply applied, and the number of the heating structures can be stacked and fixed as needed.

[0028] In actual application, the heating structure includes a heating bottom shell 11, a heating surface cover 12, a sealing gasket 13, a plurality of locking bolts 14 and a plurality of connecting bolts 15; and the top surface of the heating bottom shell and the bottom surface of the heating surface cover are both provided with a heating cavity 3, and the ends of the heating bottom shell and the heating surface cover are fixed with a water inlet and outlet 4 connected to the heating cavity; at the same time, the edges of the heating bottom shell and the heating surface cover are evenly provided with matching locking holes 5; the edges of the heating bottom shell and the heating surface cover are provided with matching connecting protrusions 6, and the connecting protrusions are provided with connecting holes 7; during installation, the heating bottom shell and the heating surface cover are pressed together, and the locking bolts pass through the locking holes and are locked and fixed, and the sealing gasket is at the connection between the heating bottom shell and the heating surface cover; adjacent heating structures are stacked, and the connecting bolts pass through the connecting holes and are locked and fixed. Its connecting holes are mainly used to fix adjacent heating structures when they are stacked, and the connecting bolts can ensure the stability and reliability of the use of the heating core of the adjacent heating structure.

[0029] In actual application, the outer surfaces of the heating bottom shell and the heating surface cover are fixed with a plurality of parallel heat-conducting convex strips 8; the heating core is located between adjacent heat-conducting convex strips. By providing the heat-conducting convex strips, the contact area with the heating core can be increased, thereby improving the efficiency of heat conduction.

[0030] At the same time, in actual application, a plurality of heat-conducting fins 9 are provided on the inner surfaces of the heating bottom shell and the heating surface cover to increase the heat-conducting contact area; the heat-conducting fins are arranged in parallel and the ends extend to the edge of the water inlet and outlet. Through the above structure, the contact area between the interior of the heating structure and the heated liquid is increased mainly through the heat-conducting fins, thereby improving the efficiency of heat-conducting heating.

[0031] In actual application, in order to improve the sealing and effectiveness of the water inlet and outlet of adjacent heating structures, a raised ring 10 is provided at one end of the water inlet and outlet, and a recessed area 16 is provided at the other end of the water inlet and outlet; during installation, the adjacent heating structures are overlapped, and the raised ring of one heating structure is inserted into the recessed area of ​​another heating structure. At the same time, an annular sealing groove 17 is provided on the outer wall of the raised ring, and a sealing rubber ring 18 is provided in the annular sealing groove; the raised ring of one heating structure is sealed and attached to the inner wall of the recessed area of ​​another heating structure through the sealing rubber ring. The effectiveness and sealing of the water inlet and outlet connection can be guaranteed by the raised ring, the recessed area and the sealing rubber ring.

[0032] The utility model has positive effects: the structure of the utility model is reasonably arranged, and matching locking holes are evenly arranged on the edges of the heating bottom shell and the heating surface cover, and at the same time, they can be combined into a complete heating channel with the help of locking bolts and sealing washers, which is convenient for disassembly and assembly to inspect and maintain the inside of the heating channel. At the same time, connecting holes are arranged on the edges of the heating bottom shell and the heating surface cover, and with the help of connecting bolts, multiple heating structures can be stacked and fixedly connected, which also greatly improves the selectivity of surface treatment inside the heating channel and the convenience and accuracy of quality inspection, and can meet the needs of different numbers of heating structures to be connected and used as a whole, and with multiple heating cores, the heating cores are located between adjacent heating structures, which greatly improves the heat absorption rate, is beneficial to improving the heating efficiency and heating uniformity, and is also convenient for replacing the heating cores. Due to the uniformity of the heating structure, it is also convenient for automated large-scale production, which is beneficial to improving production efficiency, and has strong applicability and good practicality.

[0033] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. A combined electric heating device, comprising a plurality of heating structures stacked in sequence, with heating cores fixed between adjacent heating structures, characterized in that: The heating structure comprises a heating bottom shell, a heating surface cover, a sealing gasket, a plurality of locking bolts and a plurality of connecting bolts; The top surface of the heating bottom shell and the bottom surface of the heating surface cover are both provided with a heating cavity, and the ends of the heating bottom shell and the heating surface cover are fixed with a water inlet and outlet connected with the heating cavity; The edges of the heating bottom shell and the heating surface cover are evenly provided with matching locking holes; The edges of the heating bottom shell and the heating surface cover are provided with matching connecting protrusions, and the connecting protrusions are provided with connecting holes; The heating bottom shell is pressed against the heating surface cover, and the locking bolt passes through the locking hole and is locked and fixed, and the sealing gasket is located at the connection between the heating bottom shell and the heating surface cover; Adjacent heating structures are stacked, and the connecting bolts pass through the connecting holes and are locked and fixed.

2. A combined electric heating device according to claim 1, characterized in that: The outer surfaces of the heating bottom shell and the heating surface cover are both fixed with a plurality of parallel heat-conducting convex strips; The heating core is located between adjacent heat-conducting convex strips.

3. A combined electric heating device according to claim 2, characterized in that: The inner surfaces of the heating bottom shell and the heating surface cover are provided with a plurality of heat-conducting fins for increasing the heat-conducting contact area; The heat-conducting fins are arranged in parallel and their ends extend to the edges of the water inlet and outlet.

4. A combined electric heating device according to claim 1, characterized in that: A raised ring is provided at one end of the water inlet and outlet, and a recessed area is provided at the other end of the water inlet and outlet; Adjacent heating structures are overlapped, and the raised ring of one heating structure is inserted into the recessed area of ​​another heating structure.

5. A combined electric heating device according to claim 4, characterized in that: An annular sealing groove is arranged on the outer wall of the raised ring, and a sealing rubber ring is arranged in the annular sealing groove; The raised ring of one heating structure is sealed and attached to the inner wall of the recessed area of ​​another heating structure through a sealing rubber ring.

6. A combined electric heating device according to claim 1, characterized in that: The number of the heating structures is greater than two.

7. A combined electric heating device according to claim 1, characterized in that: The heating bottom shell and the heating surface cover are both metal structures.

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