Circulation type heating tube

Abstract

The utility model relates to the technical field of liquid heating, and provides a circulation type heating pipe which comprises a heating wire, a circulation pipe and a heating body, the heating wire, the circulation pipe and the heating body are arranged to be a non-detachable whole, or the heating wire and the heating body are detachably installed on the circulation pipe respectively. Wherein the heating wire is spirally wound on the runner pipe, the heating body is arranged on the outer side of the runner pipe and wraps the heating wire, the runner pipe is provided with a cavity for liquid to flow, the cavity penetrates through the runner pipe front and back, and the liquid enters the cavity of the runner pipe and is heated by the heating wire. The runner pipe isolates water from the heating pipe (the heating body and the heating wire), corrosion of hot water to the heating pipe is prevented, the runner pipe, the heating wire and the heating body are integrated through the die-casting technology, the structure is compact, heat loss is reduced, and the heat utilization rate is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid heating technical field, concretely relates to a flow type heating pipe. BACKGROUND

[0002] The heating pipe of the dishwasher is assembled between the washing pump and the barrel body and is used for heating the water for dishwashing. The heating pipe needs to be processed by brazing technology, the process is relatively complex, and the structure is not compact enough, heat is lost, and the thermal efficiency is relatively low.

[0003] In addition, Chinese Patent No. ZL201921663713.0 discloses a heat exchange system of a dishwasher and the dishwasher, which comprises a shell, a water storage chamber arranged in the shell, a heating chamber arranged at the bottom of the shell and in communication with the water storage chamber, a heating body arranged in the heating chamber, a protective cover arranged in the heating chamber and used for isolating the heating chamber from the cavity, the protective cover being detachably arranged at the upper portion of the heating chamber, and a water pump with an input end communicated with the heating chamber and an output end communicated with the cavity. The water flows through the heating chamber from the water storage chamber and is pressurized by the water pump to enter the cavity, so that the direct heating effect of the heating chamber is obtained. The heating body is directly contacted with the liquid, so that after a period of use, the heating body in the heating chamber will accumulate water scale and food residues, and the user needs to open the protective cover to check and maintain the heating body. Hot water can corrode the heating pipe, and the heat exchange system of the dishwasher and the dishwasher need to be further improved. SUMMARY

[0004] The utility model discloses a flow type heating pipe, and the flow pipe is isolated from water and the heating pipe (heating body and heating wire), the hot water is prevented to the corrosion of heating pipe, utilizes the die casting process, fuses the flow pipe, heating wire and heating body integrally, and the structure is compact, reduces the heat loss, and the heat utilization rate is high.

[0005] A flow type heating pipe designed for the purpose comprises a heating wire, a flow pipe and a heating body, the heating wire, the flow pipe and the heating body are arranged as an integral body that cannot be disassembled, or the heating wire and the heating body are detachably installed on the flow pipe; wherein the heating wire is spirally arranged on the flow pipe, the heating body is arranged on the outside of the flow pipe and covers the heating wire, the flow pipe is provided with a cavity for liquid flow, the cavity penetrates through the flow pipe from front to back, and the liquid enters the cavity of the flow pipe and is heated by the heating wire.

[0006] The heating wire is circular in shape on the outside and flat on the inside, and the flat inside of the heating wire is provided with a flat surface in contact with the outer surface of the flow pipe.

[0007] The heating body outer side is provided with a heat insulation cover, the heat insulation cover is sleeved on the heating body outer side, so that the heat insulation cover blocks the heat transfer of the heating tube outward during the heating process of the heating tube; the heat insulation cover is provided with an isolation rib for blocking the direct contact between the inner cavity of the heat insulation cover and the heating body, and the isolation rib is protrudingly arranged on the inner side wall of the inner cavity of the heat insulation cover.

[0008] The heat insulation cover is provided with two penetrating avoidance positions corresponding to the two end portions of the heating wire.

[0009] The heat insulation cover is in an open structure, one end of the heat insulation cover is provided with a buckle, the other end of the heat insulation cover is provided with a buckle hole, and the buckle and the buckle hole are connected to connect the two ends of the open heat insulation cover.

[0010] The heat insulation cover is provided with a grounding tab for forming a grounding terminal.

[0011] The heat insulation cover is provided with an inverted edge for preventing the heating wire from being scratched during assembly, and the end portion of the inner cavity of the heat insulation cover is bent towards the inner side of the heat insulation cover and forms the inverted edge.

[0012] The flow-through pipe is provided with a plurality of circumferentially spaced anti-disengagement ribs, the flow-through pipe is fixed to the corresponding pipeline through the anti-disengagement ribs, and the anti-disengagement ribs form an anti-disengagement structure between the flow-through pipe and the pipeline.

[0013] The heating body is provided with a connecting piece, and the connecting piece is provided with an overheat protector and / or a water temperature controller.

[0014] The flow-through pipe is provided with a recessed rib to fix the flow-through pipe during the integration of the heating wire, the flow-through pipe and the heating body; the outer diameter of the flow-through pipe is equal to the inner diameter of the spiral through hole of the heating wire.

[0015] The beneficial technical effects of the utility model are as follows:

[0016] The flow-through pipe, the heating wire and the heating body are integrated by using the die casting process, the structure is compact, the heat loss is reduced, and the heat utilization rate is high.

[0017] The flow-through pipe is made of stainless steel material, which separates water and heating pipe (heating body and heating wire), and prevents hot water from corroding the heating pipe.

[0018] The inner side of the heating wire is provided with a flat surface in contact with the outer surface of the flow-through pipe, the flat surface can increase the contact area between the heating wire and the outer surface of the flow-through pipe, and accelerate heat transfer. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0020] Figure 1 It is an embodiment of the utility model that the heating wire is in a spiral structure.

[0021] Figure 2 It is a plane structure schematic view of the heating wire of one embodiment of the utility model.

[0022] Figure 3 It is a three-dimensional structure schematic view of the circulation pipe of one embodiment of the utility model.

[0023] Figure 4 It is a structure schematic view of the assembly of the heating wire, the circulation pipe, the heating body and the connecting piece of one embodiment of the utility model.

[0024] Figure 5 It is a cross section structure schematic view of the circulation type heating pipe of one embodiment of the utility model.

[0025] Figure 6 It is an open three-dimensional structure schematic view of the heat shield of one embodiment of the utility model.

[0026] Figure 7 It is a three-dimensional structure schematic view of the heat shield two end connection of one embodiment of the utility model.

[0027] Figure 8 It is a three-dimensional structure schematic view of the circulation type heating pipe of one embodiment of the utility model.

[0028] Figure 9 It is an assembly exploded structure schematic view of the circulation type heating pipe of one embodiment of the utility model. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. In order to make the above purposes, features and advantages of the application more obvious and easy to understand, a lot of specific details are described in the following description so as to be fully understood. However, the application can be implemented in many other ways different from the description herein, and those skilled in the art can make similar improvements without departing from the connotation of the application, so the application is not limited by the specific embodiments disclosed below.

[0030] Referring to Figures 1-9 A circulation type heating pipe, comprising a heating wire 1, a circulation pipe 2 and a heating body 3, the heating wire 1, the circulation pipe 2 and the heating body 3 are arranged as an integral body which cannot be disassembled; or the heating wire 1 and the heating body 3 are respectively detachably installed on the circulation pipe 2; wherein the heating wire 1 is spirally arranged on the circulation pipe 2, the heating body 3 is arranged outside the circulation pipe 2 and covers the heating wire 1, the circulation pipe 2 is provided with a cavity 4 for liquid flow, the cavity 4 penetrates through the circulation pipe 2 from front to back, and the liquid enters the cavity 4 of the circulation pipe 2 and is heated by the heating wire 1.

[0031] In the embodiment, the flow pipe 2 is made of stainless steel, which separates the water and the heating pipe (the heating body 3 and the heating wire 1) and prevents the hot water from corroding the heating pipe.

[0032] In the embodiment, the heating wire 1 and the flow pipe 2 are placed in the die casting mold for manufacturing the heating body 3 and are die cast together, so that the heating wire 1, the flow pipe 2 and the heating body 3 are integrated and have no gap, good heat transfer and high heating efficiency. After the heating wire 1 is wound on the outer surface of the flow pipe 2, the heating wire 1 and the flow pipe 2 are placed in the die casting mold for manufacturing the heating body 3.

[0033] The heating wire 1 has a circular structure on the outside and a flat shape on the inside, and the inside of the heating wire 1 is provided with a flat surface 5 in contact with the outer surface of the flow pipe 2. The flat surface 5 can increase the contact area between the heating wire 1 and the outer surface of the flow pipe 2 and accelerate heat transfer.

[0034] The heating body 3 is provided with a heat shield 6 on the outside, which is sleeved on the outside of the heating body 3 to block the heat transfer of the heating pipe outward during the heating process of the heating pipe. The heat shield 6 is provided with a separation rib 7 for blocking the direct contact between the inner cavity of the heat shield 6 and the heating body 3, and the separation rib 7 is protrudingly arranged on the inner side wall of the inner cavity of the heat shield 6. The separation rib 7 is used for separating the heating body 3 and not contacting the heating pipe, thereby reducing the heat loss of the heating pipe.

[0035] The heat shield 6 is provided with two through-avoiding positions 8 corresponding to the two ends of the heating wire 1.

[0036] The heat shield 6 is directly formed by stamping.

[0037] The heat shield 6 has an open structure, one end of the heat shield 6 is provided with a buckle 9, the other end of the heat shield 6 is provided with a buckle hole 10, and the buckle 9 and the buckle hole 10 are connected to connect the two ends of the open heat shield 6.

[0038] The heat shield 6 is provided with a grounding tab 11 for forming a grounding terminal.

[0039] During installation, the two ends of the heating wire 1 pass through the through-avoiding positions 8 of the heat shield 6, the buckle 9 is buckled into the buckle hole 10, and the assembly of the heat shield 6 is completed. At this time, the heat shield 6 is sleeved on the outside of the heating body 3 to prevent the surrounding objects from being ignited when the heating wire 1 is abnormally burned.

[0040] The heat shield 6 is provided with an inverted edge 12 for preventing the heating wire 1 from being scratched during assembly, and the end of the inner cavity of the heat shield 6 is bent towards the inside of the heat shield 6 and forms the inverted edge 12.

[0041] The flow pipe 2 is provided with a plurality of circumferentially spaced anti-disengagement ribs 13, and the flow pipe 2 is fixedly connected to the corresponding pipeline through the anti-disengagement ribs 13. The anti-disengagement ribs 13 form an anti-disengagement structure between the flow pipe 2 and the pipeline.

[0042] In the embodiment, a plurality of anti-off ribs 13 are distributed on the pipe orifices at both ends of the flow pipe 2, and the anti-off ribs 13 form reverse buckles after the end portions of the flow pipe 2 are connected with the rubber pipe (water pipe), so as to prevent the flow pipe 2 from being separated from the rubber pipe at will.

[0043] The heating body 3 is provided with a connecting piece 14, and the connecting piece 14 is provided with an overheat protector 15 and / or a water temperature controller 16. A temperature controller mounting area is designed on the heating body 3, and the temperature controller mounting area is planar and closely contacts with the temperature controller.

[0044] In the embodiment, liquid enters the cavity 4 from the flow pipe 2, passes through the heating wire 1 and the heating body 3, and the liquid is heated, so that the water temperature is increased. When the water temperature reaches the set temperature, the water temperature controller 16 acts to cut off the power supply, and the heating wire 1 stops heating; when the water temperature controller 16 is damaged or the heating wire 1 is abnormal, the overheat protector 15 acts to cut off the power supply in time, and the heating is stopped. The double temperature controllers (temperature controllers) provide double protection for the heating pipe.

[0045] The flow pipe 2 is provided with a concave rib 17, so as to fix the flow pipe 2 through the concave rib 17 in the process of fusing the heating wire 1, the flow pipe 2 and the heating body 3 into one body. In the die-casting process, the aluminum material can penetrate into the concave rib 17 to fix the flow pipe 2, so as to prevent the flow pipe 2 from being loose in the mold. The outer diameter of the flow pipe 2 is equal to the inner diameter of the spiral through hole 18 of the heating wire 1, so as to ensure that the flow pipe 2 is in good contact with the heating wire 1.

[0046] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0047] In the above description of the present application, it should be understood that, if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] In addition, if there are terms such as "first" and "second", these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0049] In the above description of the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be broadly understood. For example, it can be fixedly connected by screws, rivets or welding, or it can be detachably connected, or it can be integrated by metal processing (die casting, deep drawing stamping, lathe machining, etc. ) Or by injection molding; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the above description of the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "below" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0051] It should be noted that if an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for the purpose of description and do not represent the only implementation.

Claims

1. A flow-through heat-generating tube, characterized by: The application relates to a heating tube, which comprises a heating wire (1), a flow pipe (2) and a heating body (3), the heating wire (1), the flow pipe (2) and the heating body (3) are arranged as an integral whole which cannot be disassembled, or the heating wire (1) and the heating body (3) are respectively detachably installed on the flow pipe (2); the heating wire (1) is spirally arranged on the flow pipe (2), the heating body (3) is arranged outside the flow pipe (2) and covers the heating wire (1), the flow pipe (2) is provided with a cavity (4) for flowing liquid, the cavity (4) penetrates through the flow pipe (2) from front to back, and liquid enters the cavity (4) of the flow pipe (2) and is heated by the heating wire (1).

2. The flow- through heat-generating tube according to claim 1, wherein: The outer side of the heating wire (1) is in a circular structure, the inner side of the heating wire (1) is in a flat shape, and the inner side of the heating wire (1) is provided with a flat surface (5) which is in contact with the outer surface of the flow pipe (2).

3. The flow- through heat-generating tube according to claim 1, wherein: The outer side of the heating body (3) is provided with a heat shield (6), the heat shield (6) is sleeved outside the heating body (3), so that the heat shield (6) blocks the heat transfer of the heating tube outward during the heating process of the heating tube; the heat shield (6) is provided with an isolation rib (7) for blocking the direct contact between the inner cavity of the heat shield (6) and the heating body (3), and the isolation rib (7) is protrudingly arranged on the inner side wall of the inner cavity of the heat shield (6).

4. The flow- through heat-generating tube according to claim 3, wherein: The heat shield (6) is provided with two through-avoiding positions (8) corresponding to the two ends of the heating wire (1).

5. The flow- through heat-generating tube according to claim 3, wherein: The heat shield (6) is in an open structure, one end of the heat shield (6) is provided with a buckle (9), the other end of the heat shield (6) is provided with a buckle hole (10), and the buckle (9) and the buckle hole (10) are connected to connect the two ends of the open heat shield (6).

6. The flow- through heat-generating tube according to claim 3, wherein: The heat shield (6) is provided with a grounding tab (11) for forming a grounding terminal.

7. The flow- through heat-generating tube according to claim 3, wherein: The heat shield (6) is provided with an inward turning edge (12) for preventing the heating wire (1) from being scratched during assembly, and the end of the inner cavity of the heat shield (6) is bent towards the inner side of the heat shield (6) and forms the inward turning edge (12).

8. The flow- through heat-generating tube of claim 1, wherein: The flow pipe (2) is provided with a plurality of circumferentially spaced anti-disengagement ribs (13), the flow pipe (2) is fixedly connected to the corresponding pipeline through the anti-disengagement ribs (13), and the anti-disengagement ribs (13) form an anti-disengagement structure between the flow pipe (2) and the pipeline.

9. The flow- through heat-generating tube of claim 1, wherein: The heating body (3) is provided with a connecting piece (14), the connecting piece (14) is provided with an overheat protector (15) and / or a water temperature controller (16).

10. The flow- through heat-generating tube of claim 1, wherein: The flow pipe (2) is provided with a concave rib (17) for fixing the flow pipe (2) through the concave rib (17) during the integration of the heating wire (1), the flow pipe (2) and the heating body (3), and the outer diameter of the flow pipe (2) is equal to the inner diameter of the spiral through hole (18) of the heating wire (1).

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