Liquid electric heating exchanger

Abstract

The utility model discloses a liquid electric heating exchanger which comprises a heat conductor, the center of the heat conductor is of a hollow structure penetrating front and back, and heat dissipation teeth are arranged on the inner wall of the heat conductor. The outer wall of the heat conductor is provided with a heating element mounting groove and a heating element, and the front end of the heating element is connected with a wire; connecting pieces are arranged at the ends of the front side and the rear side of the heat conductor, and the joints of the connecting pieces and the heat conductor are of inclined plane structures gradually contracting towards the outer side. An insulating front end cover and an insulating rear end cover are respectively arranged on the outer sides of the connecting pieces at the front end and the rear end; the outer side of the heat conductor is sleeved with a protective shell, first threaded holes are formed in the front end and the rear end of the protective shell correspondingly, and a front fixing support and a rear fixing support are installed at the front end and the rear end of the protective shell through installation screws correspondingly. The liquid electric heating exchanger is high in heating efficiency, good in insulativity, long in service life, capable of saving more energy and mute.

Description

Technical Field

[0001] The utility model relates to the technical field of heating devices, in particular to a liquid electric heating exchanger. Background Art

[0002] In the prior art, for the heat of the motor, generally, the heating element is isolated from the heat exchange liquid, and the electric heating element heats the heat exchange liquid through a copper or aluminum alloy housing. The traditional heating element generally adopts a PTC semiconductor heating element, which has the following problems:

[0003] 1. Generally, the service life is relatively short;

[0004] 2. As the use time increases, the energy consumption power will gradually decay, resulting in an increase in power consumption;

[0005] 3. It is magnetic and will generate noise during operation. Summary of the Invention

[0006] The purpose of the utility model is to provide a liquid electric heating exchanger, which has high heating efficiency, good insulation, longer service life, and is more energy-saving and quiet at the same time.

[0007] To achieve the above purpose, the utility model provides a liquid electric heating exchanger, including a heat conducting body. The center of the heat conducting body is a hollow structure that penetrates from front to back, and heat dissipation teeth are arranged on the inner wall of the heat conducting body. Heating element installation grooves are formed on the outer wall of the heat conducting body, and heating elements are installed in the grooves. The front end of the heating element is connected with a wire. Connectors are arranged at both ends of the front and back of the heat conducting body. The interface between the connector and the heat conducting body is a slope structure that gradually contracts towards the outside. Insulating front covers and insulating rear covers are respectively arranged on the outer sides of the connectors at both ends.

[0008] A protective shell is sleeved outside the heat conducting body. First threaded holes are arranged at both ends of the front and back of the protective shell, and a front fixing bracket and a rear fixing bracket are respectively installed through mounting screws.

[0009] Preferably, third threaded holes corresponding to the positions of the first threaded holes are formed on the front fixing bracket. The middle part of the front fixing bracket is open, and a heating element through hole corresponding to the position of the heating element is arranged.

[0010] An opening corresponding to the connector is formed in the middle of the insulating front cover. Second threaded holes are arranged on the outer side of the insulating front cover. The second threaded holes are aligned with the first threaded holes, and the front fixing bracket and the insulating front cover are fixed on the protective shell through the mounting screws. The front fixing bracket is located between the protective shell and the insulating front cover. A wire through hole corresponding to the wire is formed on the insulating front cover.

[0011] Preferably, the insulating rear end cover is snap-fitted to the rear end of the heat conductor, the rear fixing bracket is located outside the insulating rear end cover, a fourth threaded hole corresponding to the position of the first threaded hole is formed in the rear fixing bracket, and the rear fixing bracket is installed at the rear end of the protective shell through the mounting screw; an opening corresponding to the connecting member is formed at the central position of the rear fixing bracket.

[0012] Preferably, a U-shaped card slot is formed on the outer wall of the heat conductor, and a card post matching the U-shaped card slot is arranged on the inner side of the annular outer wall of the insulating rear end cover; an opening corresponding to the connecting member is formed at the central position of the insulating rear end cover, and a support groove matching the structure of the connecting member is arranged at the edge of the opening.

[0013] Preferably, the heating element includes a heating wire located inside, a heat conducting layer is coated outside the heating wire, and a protective sleeve is coated outside the heat conducting layer.

[0014] Preferably, two heating elements are snap-fitted to the heat conductor as a group, and the heating wires at the rear ends of the heating elements in the same group are connected through a connecting piece.

[0015] Preferably, the heating wire is made of a special nickel-chromium alloy heating wire for dry-burning tubes, the heat conducting layer is made of high-temperature magnesium oxide powder, and the protective sleeve is made of stainless steel.

[0016] Preferably, a heat insulation layer is arranged between the protective shell and the heat conductor.

[0017] Preferably, the heat conductor is made of 6063 aluminum-magnesium alloy.

[0018] Preferably, the inner and outer walls of the heat conductor are subjected to surface anodic oxidation anti-corrosion treatment.

[0019] Therefore, by adopting the above-mentioned liquid electric heating exchanger, the utility model has high heating efficiency, good insulation, longer service life, and is more energy-saving and silent at the same time.

[0020] Next, through the drawings and embodiments, the technical solution of the utility model will be further described in detail. Description of the Drawings

[0021] Figure 1 is a three-dimensional structural schematic diagram of an embodiment of a liquid electric heating exchanger of the utility model;

[0022] Figure 2 is a cross-sectional structural schematic diagram of an embodiment of a liquid electric heating exchanger of the utility model;

[0023] Figure 3 is a side view schematic diagram of the heat conductor of an embodiment of a liquid electric heating exchanger of the utility model;

[0024] Figure 4 is a schematic structural view of a heating element of an embodiment of a liquid electric heating exchanger of the present utility model;

[0025] Figure 5 is a schematic structural view of the back of a heating element of an embodiment of a liquid electric heating exchanger of the present utility model;

[0026] Figure 6 is a schematic sectional structural view of a connecting member of an embodiment of a liquid electric heating exchanger of the present utility model;

[0027] Figure 7 is a schematic side view of an embodiment of a liquid electric heating exchanger of the present utility model;

[0028] Figure 8 is a schematic structural view of a front fixing bracket of an embodiment of a liquid electric heating exchanger of the present utility model;

[0029] Figure 9 is a front view schematic of an insulating front end cover of an embodiment of a liquid electric heating exchanger of the present utility model;

[0030] Figure 10 is a schematic structural view of a rear fixing bracket of an embodiment of a liquid electric heating exchanger of the present utility model;

[0031] Figure 11 is a schematic internal structure view of an insulating rear end cover of an embodiment of a liquid electric heating exchanger of the present utility model;

[0032] Figure 12 is a schematic view of the element dimensions of an embodiment of a liquid electric heating exchanger of the present utility model, where (a) is the dimension diagram of the heat conductor and (b) is the dimension diagram of the protective shell.

[0033] Reference numerals

[0034] 1. Protective shell; 11. First threaded hole; 2. Insulating front end cover; 21. Second threaded hole; 22. Wire through hole; 3. Insulating rear end cover; 31. Clamping post; 32. Support groove; 41. Front fixing bracket; 42. Rear fixing bracket; 43. Mounting screw; 44. Third threaded hole; 45. Heating element through hole; 46. Fourth threaded hole; 5. Heat conductor; 51. Heating element installation groove; 52. Heat dissipation teeth; 53. U-shaped card slot; 6. Connecting member; 7. Heating element; 71. Heating wire; 72. Heat conducting layer; 73. Protective sleeve; 8. Connecting piece; 9. Heat insulating layer; 10. Wire. Detailed implementation manners

[0035] The technical solutions of the present utility model will be further described below with reference to the drawings and embodiments.

[0036] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] Embodiment 1

[0038] like Figure 1 and Figure 2 As shown, the utility model provides a liquid electric heating exchanger, including a heat conductor 5. In this embodiment, the heat conductor 5 is made of 6063 aluminum-magnesium alloy, which has excellent thermal conductivity and excellent corrosion resistance, and can effectively increase the service life of the electric heating exchanger. The inner and outer walls of the heat conductor 5 are both treated with anodized surface anti-corrosion treatment, which can further increase the service life of the heat conductor 5.

[0039] The center of the heat conductor 5 is a hollow structure that runs through the front and back, and the inner wall of the heat conductor 5 is provided with heat dissipation teeth 52, which can effectively increase the contact area between the inner wall of the heat conductor 5 and water, thereby greatly improving the heat conduction speed of the heat conductor 5, which can not only improve the heat conduction efficiency but also help reduce the heating power consumption, thereby being more energy-saving.

[0040] like Figure 3 As shown, a heating element installation groove 51 is provided on the outer wall of the heat conductor 5 and a heating element 7 is installed thereon. The heating element 7 includes a heating wire 71 located inside. The outer side of the heating wire 71 is covered with a heat conductive layer 72. The outer side of the heat conductive layer 72 is covered with a protective cover 73. Figure 4 shown.

[0041] In this embodiment, the material of the heating wire 71 is a nickel-chromium alloy heating wire specially used for dry-burning tubes, which has the advantages of long continuous heating time. The material of the heat-conducting layer 72 is high-temperature magnesium oxide powder, which can withstand a temperature of 800 degrees and a hot high voltage of more than 2000V, and has the advantages of good insulation performance and fast heat dissipation speed. The protective cover 73 is a 10mm diameter outer skin made of stainless steel 304 material, which has the advantages of long-term resistance to dry burning and oxidation. Based on the selection of the above materials, the service life of the heating element 7 can be effectively improved, and then the service life of the electric heating exchanger can be significantly improved.

[0042] As Figure 3 shown, a wire 10 is connected to the front end of the heating element 7, which can supply power to the heating element 7. As Figure 5 shown, two heating elements 7 are clamped onto the heat conductor 5 as a group, and the heating wires 71 at the rear ends of the heating elements 7 in the same group are connected through a connecting piece 8, so that each group of heating elements 7 can be normally energized.

[0043] As Figure 3 shown, connectors 6 are provided at both ends of the front and rear sides of the heat conductor 5. In this embodiment, the connectors 6 and the heat conductor 5 are connected by welding. As Figure 6 shown, the interface between the connector 6 and the heat conductor 5 is a bevel structure that gradually contracts outward. This structure can help the water flow inside the heat conductor 5 to smoothly pass through the connector 6, avoiding the generation of eddy currents at the connection position between the heat conductor 5 and the connector 6 due to the blockage of the connector 6, thereby affecting the heat exchange efficiency, and can also reduce the noise during operation to a certain extent.

[0044] As Figure 3 and Figure 7 shown, an insulating front end cover 2 and an insulating rear end cover 3 are respectively arranged on the outer sides of the connectors 6 at the front and rear ends, which can effectively improve the insulation of the heat conductor 5. A protective shell 1 is sleeved on the outer side of the heat conductor 5, which can provide a protective effect for the heat conductor 5. As Figure 2 and Figure 7 shown, first threaded holes 11 are provided at both ends of the front and rear of the protective shell 1, and a front fixing bracket 41 and a rear fixing bracket 42 are respectively installed through mounting screws 43. Mounting openings are provided at the bottoms of the front fixing bracket 41 and the rear fixing bracket 42, which can facilitate the installation and fixation of the electric heating exchanger.

[0045] Among them, as Figure 8 shown, a third threaded hole 44 corresponding to the position of the first threaded hole 11 is provided on the front fixing bracket 41, and the middle of the front fixing bracket 41 is open and provided with a heating element through hole 45 corresponding to the position of the heating element 7.

[0046] As Figure 9 shown, an opening corresponding to the connector 6 is provided in the middle of the insulating front end cover 2, and a second threaded hole 21 is provided on the outer side of the insulating front end cover 2. The second threaded hole 21 is aligned with the first threaded hole 11, and the front fixing bracket 41 and the insulating front end cover 2 are fixed on the protective shell 1 through the mounting screw 43. The front fixing bracket 41 is located between the protective shell 1 and the insulating front end cover 2, as Figure 6 shown. A wire through hole 22 corresponding to the wire 10 is also provided on the insulating front end cover 2 to facilitate the normal extraction of the wire 10.

[0047] AsFigure 3 As shown, the insulating rear end cover 3 is snap-fitted to the rear end of the heat conductor 5, and the rear fixing bracket 42 is located outside the insulating rear end cover 3, as Figure 7 shown. As Figure 10 shown, a fourth threaded hole 46 corresponding to the position of the first threaded hole 11 is provided on the rear fixing bracket 42 and is mounted on the rear end of the protective shell 1 through a mounting screw 43. An opening corresponding to the connecting member 6 is provided at the central position of the rear fixing bracket 42.

[0048] As Figure 5 shown, a U-shaped card slot 53 is provided on the outer wall of the heat conductor 5, and a card post 31 matching the U-shaped card slot 53 is provided on the inner side of the annular outer wall of the insulating rear end cover 3. As Figure 11 shown, the card post 31 can just be inserted into the U-shaped card slot 53 to realize the limiting effect on the insulating rear end cover 3. An opening corresponding to the connecting member 6 is provided at the central position of the insulating rear end cover 3, and a support groove 32 matching the structure of the connecting member 6 is provided at the edge of the opening, which can make the insulating rear end cover 3 fit with the connecting member 6, make the insulating rear end cover 3 more stable, and at the same time can also provide a supporting effect for the heat conductor 5 through the insulating rear end cover 3, so that the heat conductor 5 can be stably placed in the protective shell 1. As Figure 2 shown, a heat insulation layer 9 is provided between the protective shell 1 and the heat conductor 5, which can effectively reduce the internal heat from being exported through the protective shell 1, thereby improving the heat exchange efficiency of the heat conductor 5 and being beneficial to energy conservation.

[0049] In addition, compared with the prior art, the sizes of the protective shell 1, the heat conductor 5, and the corresponding heating element 7 and other components of the electric heating exchanger in this embodiment are all increased. As Figure 12 shown, on the one hand, it can not only improve the physical properties of each component, effectively improve the heating efficiency and service life of the electric heating exchanger, on the other hand, it can also significantly reduce the noise during the operation of the electric heating exchanger, ensure that the electric heating exchanger can operate relatively quietly, and can significantly improve the use experience.

[0050] Therefore, the present utility model adopts the above-mentioned liquid electric heating exchanger, which has higher heating efficiency, good insulation, longer service life, and is more energy-saving and quiet at the same time.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present utility model, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A liquid electrothermal exchanger, characterized in that: It includes a heat conductor. The center of the heat conductor has a hollow structure that runs through from front to back, and heat dissipation teeth are provided on the inner wall of the heat conductor; a heating element installation groove is formed on the outer wall of the heat conductor, and a heating element is installed in the groove. The front end of the heating element is connected to a wire; connectors are provided at both ends of the front and rear sides of the heat conductor. The interface between the connector and the heat conductor is a bevel structure that gradually contracts outward; an insulating front end cover and an insulating rear end cover are respectively provided on the outer sides of the connectors at both ends. A protective shell is sleeved on the outer side of the heat conductor. First threaded holes are provided at both ends of the protective shell, and a front fixing bracket and a rear fixing bracket are respectively installed through mounting screws.

2. The liquid electric heating exchanger according to claim 1, wherein: A third threaded hole corresponding to the position of the first threaded hole is formed in the front fixing bracket. The middle of the front fixing bracket is open, and a heating element through hole corresponding to the position of the heating element is provided. An opening corresponding to the connector is formed in the middle of the insulating front end cover. A second threaded hole is provided on the outer side of the insulating front end cover. The second threaded hole is aligned with the first threaded hole, and the front fixing bracket and the insulating front end cover are fixed on the protective shell through the mounting screws. The front fixing bracket is located between the protective shell and the insulating front end cover; a wire through hole corresponding to the wire is formed in the insulating front end cover.

3. A liquid electrothermal exchanger according to claim 1, characterized in that: The insulating rear end cover is snap-fitted to the rear end of the heat conductor. The rear fixing bracket is located on the outer side of the insulating rear end cover. A fourth threaded hole corresponding to the position of the first threaded hole is formed in the rear fixing bracket, and the rear fixing bracket is installed at the rear end of the protective shell through the mounting screw; an opening corresponding to the connector is formed at the center position of the rear fixing bracket.

4. The liquid electrothermal exchanger according to claim 3, wherein: A U-shaped card slot is formed on the outer wall of the heat conductor. A card post matching the U-shaped card slot is provided on the inner side of the annular outer wall of the insulating rear end cover; an opening corresponding to the connector is formed at the center position of the insulating rear end cover, and a support groove matching the structure of the connector is provided at the edge of the opening.

5. A liquid electrothermal exchanger according to claim 1, characterized in that: The heating element includes a heating wire located inside. The heating wire is coated with a heat conducting layer on the outside, and the heat conducting layer is coated with a protective sleeve on the outside.

6. The liquid electro-heating exchanger according to claim 5, characterized in that: Two heating elements are snap-fitted on the heat conductor as a group. The heating wires at the rear ends of the heating elements in the same group are connected through a connecting piece.

7. The liquid electrothermal exchanger according to claim 5, characterized in that: The heating wire is made of a nickel-chromium alloy heating wire dedicated to dry-burning tubes. The heat conducting layer is made of high-temperature magnesium oxide powder, and the protective sleeve is made of stainless steel.

8. A liquid electrothermal exchanger according to claim 1, characterized in that: An insulating layer is provided between the protective shell and the heat conductor.

9. A liquid electrothermal exchanger according to claim 1, characterized in that: The heat conductor is made of 6063 aluminum-magnesium alloy.

10. A liquid electrothermal exchanger according to claim 1, characterized in that: The inner and outer walls of the heat conductor are subjected to surface anodic oxidation anti-corrosion treatment.

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