Instant heating body

Abstract

The utility model discloses an instant heating body which comprises a heating pipe with a heating flow channel extending in the axial direction, two end face sealing pieces arranged at the two ends of the heating pipe and a heating electrode, one end of the heating electrode is connected to the heating pipe in a sleeved mode, the other end of the heating electrode is connected with an external power source, and water passing openings are formed in the two end face sealing pieces. At least two heating pieces for separating the heating flow channel are axially arranged in the heating pipe at intervals, through-flow structures are arranged on the heating pieces or between the heating pieces and the heating pipe, and the axially adjacent through-flow structures are arranged in a staggered mode. According to the utility model, the heating sheets are axially arranged in the heating chamber at intervals, so that not only is the water flow pressure loss reduced, but also the heating area is increased, and the heating efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of drinking water heating technology, and in particular to an instant heating element. Background Technology

[0002] Instantaneous heating elements are now widely used in household appliances such as water dispensers and water purifiers. They eliminate the need for pre-boiling water and long waiting times, providing great convenience to consumers. However, most existing heating elements use a single-layer quartz tube to directly heat the flowing water. This structure suffers from poor stability in controlling the water flow direction and low heating efficiency, leaving room for improvement.

[0003] To address the aforementioned issues, Chinese patent CN107007153 describes a spiral heating device for a fast-heating water dispenser. This device uses a threaded bar in the quartz heating tube to create a spiral flow between the tube and the water, thereby extending the water's residence time within the tube and improving heating efficiency. However, the threaded bar significantly reduces the flow area within the heating tube, and the large number of spiral stages also... Utility Model Content

[0004] The present invention aims to overcome the defects in the prior art by providing an instant heating element. This element heats the water flow simultaneously by axially arranging heating elements at intervals inside the heating tube. This not only effectively reduces water pressure loss but also effectively increases the heating area and improves heating efficiency.

[0005] To achieve the above objectives, an instant heating element includes a heating tube with an axially extending heating channel, two end face seals disposed at both ends of the heating tube, and a heating electrode with one end sleeved on the heating tube and the other end connected to an external power source. Both end face seals are provided with water inlets. At least two heating plates that separate the heating channel are axially spaced inside the heating tube. The heating plates or the heating plates and the heating tube are provided with flow passage structures, and the axially adjacent flow passage structures are staggered.

[0006] The flow passage structure is further configured as either a hole structure on the heating element or a notch structure on the outer edge of the heating element.

[0007] The flow passage structures are further configured such that the axially adjacent flow passage structures are located on opposite sides of the heating tube in the radial direction.

[0008] The heating element is further configured as follows: the heating element is a circular piece whose outer diameter is adapted to the inner diameter of the heating channel.

[0009] The heating element is further configured as follows: the heating tube is a PTC ceramic tube, and the heating element is a PTC ceramic sheet.

[0010] The heating elements are further configured such that they are connected by a connecting shaft and the connecting shaft is arranged opposite to the water inlets at both ends.

[0011] The end face seal is further configured such that: the end face seal includes a cover for fitting onto the end of the heating tube, and a plug disposed on the inner surface of the cover and for being embedded in the heating tube, wherein the outer edge of the cover and the plug are fitted together to form an annular groove for the end of the heating tube to be embedded.

[0012] Further configuration: The heating element is placed vertically for use with water entering at the bottom and exiting at the top.

[0013] Compared with the prior art, the present invention has a simple and reasonable structure. By axially arranging heating elements in the heating tube at intervals, the heating tube and heating elements can heat the water flow simultaneously. This not only reduces water pressure loss, but also effectively increases the heating area and improves heating efficiency. At the same time, the flow passage structure on adjacent heating elements is staggered, which effectively extends the water flow path and further improves heating efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an instant heating element according to the present invention;

[0015] Figure 2 This is a schematic diagram of the axial cross-sectional structure of the heating element;

[0016] Figure 3 This is a schematic diagram of the heating element's structure;

[0017] Figure 4 This is a structural schematic diagram of the end face seal.

[0018] The following reference numerals are marked on the accompanying drawings:

[0019] 10. Heating tube; 11. Heating channel; 20. End face seal; 21. Cover; 22. Plug; 23. Annular groove; 24. Inlet; 25. Outlet; 30. Heating electrode; 40. Heating element; 41. Flow passage structure; 42. Connecting shaft. Detailed Implementation

[0020] The following describes a specific embodiment of the present invention in detail with reference to the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0021] This utility model discloses an instant heating element, such as... Figure 1As shown, the device includes a heating tube 10 with an axially extending heating channel 11, two end face seals 20 disposed at both ends of the heating tube 10, and a heating electrode 30 with one end sleeved on the heating tube 10 and the other end connected to an external power source. Both end face seals 20 are provided with water inlets, which are used as inlet 24 and outlet 25, respectively. In this way, the heating tube 10 is heated by energizing the heating electrode 30, and the heating tube 10 can heat the water flowing through the heating channel 11 to obtain hot water.

[0022] In this embodiment, as Figure 2 and Figure 3 As shown, the heating tube 10 is a cylindrical PTC ceramic tube with at least two heating elements 40 axially spaced inside. Each heating element 40 is a PTC ceramic disc with an outer diameter that matches the inner diameter of the heating tube 10. This allows the outer edge of the heating element 40 to be attached to the inner wall of the heating tube 10, thus axially dividing the heating channel 11 into multiple segments. When the heating electrode 30 is energized, the heating tube 10 and the heating elements 40 can simultaneously heat the water flowing through the heating channel 11 through heat transfer, effectively increasing the heating area of ​​the heating element and improving the heating efficiency. In this design, the more heating elements 40 there are, the larger the heating area of ​​the heating element and the higher the heating efficiency. Preferably, the heating elements 40 are connected by a connecting shaft 42, so that the heating elements 40 form a whole for easy installation inside the heating tube 10. At the same time, the connecting shaft 42 is arranged opposite to the water inlets at both ends, so that the connecting shaft 42 can offset the impact of incoming water and ensure the effectiveness of the heating elements 40.

[0023] In the above scheme, such as Figure 3 As shown, the heating element 40 is provided with a flow passage structure 41 for water to flow between adjacent heating channels 11. The flow passage structure 41 is a hole structure on the heating element 40. In this embodiment, it is specifically manifested as a waist-shaped hole structure provided along the outer edge of the heating element 40. At the same time, the flow passage structures 41 on adjacent heating elements 40 in the heating tube 10 are staggered. Preferably, two adjacent flow passage structures 41 are provided on opposite sides of the radial direction of the heating tube 10, that is, on opposite sides of the edge of the heating element 40. This arrangement can cause the water flow to be disturbed in the heating tube 10 to extend the flow path, thereby achieving the purpose of improving heating efficiency. At the same time, it can significantly reduce water pressure loss compared with the existing spiral flow channel.

[0024] In some other specific embodiments, the flow passage structure 41 can also be provided between the heating element 40 and the heating tube 10, that is, the outer edge surface of the heating element 40 is provided with a notch structure for cooperating with the inner wall of the heating tube 10 to form the flow passage structure 41.

[0025] In this embodiment, the heating element is preferably placed vertically with water entering at the bottom and exiting at the top, so that bubbles formed inside the heating tube 10 can easily float to the surface and be discharged.

[0026] In this embodiment, as Figure 4 As shown, the end face seal 20 is a silicone part, which includes a cover 21 for fitting onto the end of the heating tube 10, and a plug 22 disposed on the inner surface of the cover 21 for embedding into the heating tube 10. Thus, the end face seal 20 forms an annular groove 23 for embedding the end of the heating tube 10 between the outer edge of the cover 21 and the plug 22. This design can effectively improve the sealing fit between the end face seal 20 and the end of the heating tube 10.

[0027] Compared with the prior art, the present invention has a simple and reasonable structure. By axially arranging heating elements in the heating tube at intervals, the heating tube and heating elements can heat the water flow simultaneously. This not only reduces water pressure loss, but also effectively increases the heating area and improves heating efficiency. At the same time, the flow passage structure on adjacent heating elements is staggered, which effectively extends the water flow path and further improves heating efficiency.

[0028] The above-disclosed embodiments are merely examples of the present utility model. However, the present utility model is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

Claims

1. An instant heating element, comprising a heating tube having an axially extending heating channel, two end face seals disposed at both ends of the heating tube, and a heating electrode having one end sleeved on the heating tube and the other end connected to an external power source, wherein both end face seals are provided with water inlets, characterized in that at least two heating plates that separate the heating channel are axially spaced inside the heating tube, and flow passage structures are provided on the heating plates or between the heating plates and the heating tube, and the axially adjacent flow passage structures are staggered.

2. The instant heating element according to claim 1, characterized in that, The flow passage structure is either a flow structure provided on the heating element or a notch structure provided on the outer edge of the heating element.

3. An instant heating element according to claim 1 or 2, characterized in that, The axially adjacent flow passage structures are located on opposite sides of the heating tube in the radial direction.

4. The instantaneous heating element according to claim 1, characterized in that, The heating element is a circular piece whose outer diameter is adapted to the inner diameter of the heating channel.

5. The instantaneous heating element according to claim 1, characterized in that, The heating element is a PTC ceramic tube, and the heating plate is a PTC ceramic plate.

6. The instant heating element according to claim 1, characterized in that, The heating elements are connected by a connecting shaft, and the connecting shaft is arranged opposite to the water inlets at both ends.

7. The instant heating element according to claim 1, characterized in that, The end face seal includes a cover for fitting onto the end of the heating tube and a plug disposed on the inner surface of the cover for embedding into the heating tube. The outer edge of the cover and the plug are fitted together to form an annular groove for embedding the end of the heating tube.

8. The instant heating element according to claim 1, characterized in that, The heating element is placed vertically for use, with water entering from the bottom and exiting from the top.

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