Heater and water dispenser

Abstract

The utility model relates to the technical field of water dispensers, in particular to a heater and a water dispenser. The heater comprises a heating pipe and an enhanced heat exchange assembly, and the heating pipe is provided with a water inlet port and a water outlet port; the enhanced heat exchange assembly is arranged in the heating pipe and comprises a central column and a jet flow barrel, a water inlet is formed in the end, facing the water inlet end, of the jet flow barrel, a jet flow cavity is formed in the jet flow barrel, the central column penetrates through the jet flow cavity, and jet flow holes are formed in the side wall of the jet flow barrel. And the ratio of the outer diameter of the central column to the inner diameter of the jet cylinder is 1: 8-3: 5. According to the heater and the water dispenser, the defect that the heat exchange efficiency of a heater in an existing instant heating water dispenser is low is overcome, the heating efficiency of the heater is improved, and the heat exchange effect and piezoresistance of the heat exchange assembly and the stability of the heater can be enhanced at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of water dispensers, in particular to a heater and a water dispenser. Background Art

[0002] An instant hot water dispenser is a special type of water dispenser that can quickly heat water when needed and provide hot water for people to use.

[0003] Affected by the instability of the two-phase flow in the high-temperature section of the flow heating process, when the outlet temperature of the instant hot water dispenser is higher than 95 degrees Celsius, the outlet jet phenomenon is prone to occur, resulting in a sharp decrease in the reliability of the instant hot water system. Due to the high-temperature jet phenomenon, existing instant hot water dispensers generally use a heating method with a target temperature increase at the initial stage of heating. However, the heat exchange efficiency of the heater of the existing instant hot water dispenser is low, resulting in the temperature of the first cup of water being too low. Utility Model Content

[0004] The utility model provides a heater and a water dispenser, which are used to solve the defect of low heat exchange efficiency of the heater in the existing instant hot water dispenser, improve the heating efficiency of the heater and can take into account the heat exchange effect, pressure resistance and stability of the enhanced heat exchange component.

[0005] On one hand, the utility model provides a heater, comprising a heating tube and an enhanced heat exchange component. The heating tube has a water inlet port and a water outlet port; the enhanced heat exchange component is arranged in the heating tube, the enhanced heat exchange component comprises a central column and a jet tube, the jet tube is provided with a water inlet at one end facing the water inlet port, a jet cavity is formed in the jet tube, the central column is passed through the jet cavity, a jet hole is provided on the side wall of the jet tube, and the ratio of the outer diameter of the central column to the inner diameter of the jet tube is 1:8 to 3:5.

[0006] According to the heater provided by the utility model, the outer diameter of the central column is 2 mm to 12 mm.

[0007] According to the heater provided by the utility model, the inner diameter of the jet tube is 16 mm to 20 mm.

[0008] According to the heater provided by the utility model, the inner diameter of the jet tube changes gradually along the flow direction of the fluid, and / or the outer diameter of the central column changes gradually along the axial direction.

[0009] According to the heater provided by the utility model, the enhanced heat exchange component includes a plurality of the jet tubes, the central column forms a connecting section corresponding to the projection area of ​​each jet tube on the central column, and the ratio between the outer diameter of each connecting section and the inner diameter of the corresponding jet tube is between 1:8 and 3:5.

[0010] According to the heater provided by the utility model, the ratio of the outer diameter of at least part of the connecting sections to the inner diameter of the corresponding jet tube is different.

[0011] According to the heater provided by the utility model, the outer diameter of the same connecting section is the same everywhere, and / or; the inner diameter of the same jet tube is the same everywhere; and / or, the outer diameters of at least some different connecting sections are different; and / or, the inner diameters of at least some different jet tubes are different.

[0012] According to the heater provided by the utility model, the outer diameters of the different connecting sections gradually increase or decrease along the flow direction of the fluid; and / or the inner diameters of the different jet tubes gradually change along the flow direction of the fluid.

[0013] According to the heater provided by the utility model, the outer diameter of the connecting section changes gradually.

[0014] According to the heater provided by the utility model, the outer wall of a part of the connecting section is arranged parallel to the inner wall of the jet cavity.

[0015] According to the heater provided by the utility model, a gap is provided between the outer wall of the jet tube and the inner wall of the heating tube.

[0016] According to the heater provided by the utility model, the gap is 1 mm to 5 mm.

[0017] According to the heater provided by the utility model, the jet tube is coaxially arranged with the central column.

[0018] The heater provided by the utility model further comprises a water inlet structure and a water outlet structure, wherein the water inlet structure is connected to the water inlet port, and the water outlet structure is connected to the water outlet port.

[0019] Another aspect of the utility model provides a water dispenser, comprising a shell and the heater as described above, wherein the heater is arranged on the shell.

[0020] The heater provided by the utility model is provided with an enhanced heat exchange component in the heating tube. After the incoming water enters the heating tube through the water inlet end of the heating tube, it enters the jet cavity from the water inlet of the jet tube, and then forms a jet to flow out vertically through the jet hole on the side wall of the jet tube to flush the heating wall surface of the heating tube, thereby improving the heat exchange efficiency between the water and the heating wall surface. The central column is inserted into the jet cavity and the ratio of the outer diameter of the central column to the inner diameter of the jet tube is controlled within a range of 1:8 to 3:5, so that the volume of the jet cavity is within a reasonable range, thereby taking into account the heat exchange effect of the enhanced heat exchange component, the pressure resistance and the stability of the heater.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 is a schematic diagram of a heater provided in an embodiment of the utility model;

[0024] Figure 2 is a cross-sectional view of a heater provided by an embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the enhanced heat exchange component in the heater provided in an embodiment of the utility model.

[0026] Reference numerals:

[0027] 10. Heater; 110. Heating tube; 120. Enhanced heat exchange component; 121. Center column; 1211. Connecting section; 122. Jet tube; 1221. Jet cavity; 1222. Jet hole; 123. Water baffle; 130. Water inlet structure; 140. Water outlet structure; 150. Positioning structure; 160. Sealing structure; 170. Water inlet temperature sensor; 180. Water outlet temperature sensor. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are 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.

[0029] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0030] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0031] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Combine the following Figures 1 to 3 The utility model describes a heater and a water dispenser.

[0034] It should be noted that in each embodiment of the heater 10 provided by the present invention, each numerical range includes both end point values. For example, the following “the ratio of the outer diameter of the central column 121 to the inner diameter of the jet tube 122 is 1:8 to 3:5” includes two embodiments in which the ratio of the outer diameter of the central column 121 to the inner diameter of the jet tube 122 is 1:8 and 3:5.

[0035] See also Figures 1 to 3As shown, the heater 10 provided by the embodiment of the utility model includes a heating tube 110 and an enhanced heat exchange component 120. The heating tube 110 has a water inlet port and a water outlet port; the enhanced heat exchange component 120 is arranged in the heating tube 110, and the enhanced heat exchange component 120 includes a central column 121 and a jet tube 122, and the jet tube 122 is provided with a water inlet at one end facing the water inlet port, and a jet cavity 1221 is formed in the jet tube 122, the central column 121 is penetrated in the jet cavity 1221, and the side wall of the jet tube 122 is provided with a jet hole 1222, and the ratio of the outer diameter of the central column 121 to the inner diameter of the jet tube 122 is 1:8 to 3:5.

[0036] The heater 10 provided by the utility model is configured with an enhanced heat exchange component 120 in the heating tube 110. After the incoming water enters the heating tube 110 through the water inlet end of the heating tube 110, it enters the jet cavity 1221 from the water inlet of the jet tube 122, and then forms a jet to flow out vertically through the jet hole 1222 on the side wall of the jet tube 122 to flush the heating wall surface of the heating tube 110, thereby improving the heat exchange efficiency between the water and the heating wall surface. The central column 121 is inserted into the jet cavity 1221 and the ratio of the outer diameter of the central column 121 to the inner diameter of the jet tube 122 is controlled within a range of 1:8 to 3:5, so that the volume of the jet cavity 1221 is within a reasonable range, thereby taking into account the heat exchange effect of the enhanced heat exchange component 120, the pressure resistance and the stability of the heater 10.

[0037] Specifically, see Figure 1 and Figure 2 As shown, in this embodiment, the heating tube 110 is a cylindrical component with openings at both ends (the water inlet end and the water outlet end respectively), a heating cavity is formed inside the heating tube 110, and the enhanced heat exchange component 120 is correspondingly arranged in the heating cavity, and a heating component is arranged inside the heating cavity. For example, the heating component can be an electric heater 10 such as thick film heating, quartz tube heating, nano film heating, cast aluminum heating, stainless steel wire heating, etc., or a heat exchanger that realizes heating functions such as steam heating and combustion heating. The jet formed by the jet hole 1222 and the heating wall surface (heating film or heating wire, etc.) of the heating tube 110 are enhanced to exchange heat, thereby improving the heat exchange efficiency of the heater 10.

[0038] Both ends of the heating chamber are provided with installation spaces for arranging components such as the water inlet structure 130 and the water outlet structure 140.

[0039] The enhanced heat exchange assembly 120 includes a central column 121, a jet tube 122 and a water baffle 123. The water baffle 123 is fixedly sleeved on the central column 121. One end of the jet tube 122 faces the liquid inlet port to form a water inlet. The other end of the jet tube 122 is connected to the water baffle 123. The jet hole 1222 is located on the wall of the jet tube 122. A jet cavity 1221 is formed between the inner wall of the jet tube 122 and the outer wall of the central column 121. After water enters the jet cavity 1221 through the water inlet, the liquid flows out from the jet hole 1222 located on the side wall and forms a jet under the action of the water baffle 123. Both ends of the central column 121 are fixed in the heating tube 110 through the positioning structure 150 and are coaxially arranged with the heating tube 110.

[0040] The shape of the jet hole 1222 includes but is not limited to regular hole shapes such as circular holes, square holes, and triangular holes, and may also be irregular hole shapes with specific cross-sectional shapes. It is sufficient that the jet perpendicular to the heated wall surface is generated after the incoming water flows out through the jet hole 1222, and the utility model does not make specific restrictions on this. Preferably, in this embodiment, the jet hole 1222 is a circular jet hole, and the side wall of the jet tube 122 is evenly provided with a plurality of jet holes 1222 to form a uniform jet perpendicular to the heated wall surface on the periphery of the jet cavity 1221.

[0041] The number of the jet tubes 122 is at least one, and can be single or multiple, which is selected according to the specifications of the heater 10. When there is a single jet tube 122, the incoming water can form a single jet through the jet hole 1222 after entering the jet tube 122. When there are multiple jet tubes 122, the multiple jet tubes 122 are arranged on the central column 121 at intervals along the liquid flow direction, and the incoming water flows through the jet holes 1222 of the multiple jet tubes 122 in sequence to form multiple jets. Through multiple jet heat exchanges, the fluid temperature continues to rise until it reaches the design temperature, and then flows out from the outlet structure.

[0042] It should be noted that the outer diameter of the center column 121 will affect the effective volume of the jet chamber 1221. For example, under the premise that the inner diameter and depth of the jet tube 122 remain unchanged, the smaller the outer diameter of the center column 121, the larger the effective volume of the jet chamber 1221, that is, the larger the effective volume of the jet tube 122, and accordingly, the larger the outer diameter of the center column 121, the smaller the effective volume of the jet chamber 1221. The smaller the effective volume of the jet tube 122. Similarly, under the premise that the outer diameter of the center column 121 and the depth of the jet chamber 1221 remain unchanged, the larger the inner diameter of the jet tube 122, the larger the effective volume of the jet chamber 1221, that is, the larger the effective volume of the jet tube 122, and accordingly, the smaller the inner diameter of the jet tube 122, the smaller the effective volume of the jet chamber 1221, and the smaller the effective volume of the jet tube 122. Therefore, by controlling the ratio of the outer diameter of the central column 121 to the inner diameter of the jet tube 122 within a reasonable range (1:8 to 3:5), the effective volume of the jet chamber 1221 can be controlled within an optimal range. When the water inlet pressure is constant, since the effective volume of the jet chamber 1221 is within an optimal range, the flow velocity, piezoresistance, etc. of the jet formed through the jet hole 1222 can tend to be stable, so that the enhanced heat exchange component 120 can take into account the heat exchange effect, piezoresistance and stability of the heater 10 of the enhanced heat exchange component 120.

[0043] According to some embodiments of the present invention, the outer diameter of the center column 121 is 2 mm to 12 mm, and the inner diameter of the jet tube 122 is 16 mm to 20 mm. As an example, the outer diameter of the center column 121 can be 4 mm, 8 mm, 10 mm or 12 mm, and the inner diameter of the jet tube 122 can be 16 mm, 18 mm or 20 mm. By controlling the outer diameter of the center column 121 to 2 mm to 12 mm and the inner diameter of the jet tube 122 to 16 mm to 20 mm, the heat exchange effect of the heat exchange component 120, the piezoresistance and the stability of the heater 10 can be taken into account.

[0044] The experimental results show that, under the premise of keeping other conditions the same, when the outer diameter of the central column 121 is 4 mm and the inner diameter of the jet tube 122 is 18 mm, the heat transfer coefficient of the heater 10 is 3365 W / m2K, the Nusselt number is 117, and the pressure drop is 89 Pa; when the outer diameter of the central column 121 is 8 mm and the inner diameter of the jet tube 122 is 18 mm, the heat transfer coefficient of the heater 10 is 3361 W / m2K, the Nusselt number is 117, and the pressure drop is 90 Pa; when the outer diameter of the central column 121 is 12 mm and the inner diameter of the jet tube 122 is 18 mm, the heat transfer coefficient of the heater 10 is 3386 W / m2K, the Nusselt number is 118, and the pressure drop is 94 Pa. It can be seen that when the outer diameter of the central column 121 is controlled between 2 mm and 12 mm, the heat transfer coefficient, Nusselt number, and pressure drop of the heater 10 can be within a better range.

[0045] In specific implementation, in order to adapt the heater 10 to different usage requirements according to specific usage conditions, the shape specifications of the central column 121 and the ejector tube 122 in the enhanced heat exchange component 120 can be selected accordingly, as follows:

[0046] According to some embodiments of the present invention, the inner diameter of the jet tube 122 changes gradually along the flow direction of the fluid. For example, the inner diameter of the jet tube 122 increases (or decreases) linearly (or nonlinearly) along the flow direction of the fluid.

[0047] According to some embodiments of the present invention, the outer diameter of the central column 121 changes gradually along the axial direction. For example, the entire central axis increases (or decreases) linearly (or nonlinearly) along the axial direction.

[0048] According to some embodiments of the present invention, the enhanced heat exchange component 120 includes a plurality of jet tubes 122 (four for example), and the central column 121 forms a connecting section 1211 corresponding to the projection area of ​​each jet tube 122 on the central column 121, and the ratio between the outer diameter of each connecting section 1211 and the inner diameter of the corresponding jet tube 122 is between 1:8 and 3:5. For example, the outer diameters of the connecting sections 1211 corresponding to all the jet tubes 122 are the same, or the outer diameters of the connecting sections 1211 corresponding to at least some of the jet tubes 122 are different, but the ratios of the outer diameters of all the connecting sections 1211 and the inner diameters of the corresponding jet tubes 122 are between 1:8 and 3:5.

[0049] According to some embodiments of the present invention, at least some of the ratios of the outer diameters of the connecting segments 1211 to the inner diameters of the corresponding jet tubes 122 are different. For example, the ratio of the outer diameters of the connecting segments 1211 corresponding to the first two jet tubes 122 to the inner diameters of the jet tubes 122 is 1:8, and the ratio of the outer diameters of the connecting segments 1211 corresponding to the last two jet tubes 122 to the inner diameters of the jet tubes 122 is 3:5.

[0050] According to some embodiments of the present invention, the outer diameter of the same connecting segment 1211 is the same everywhere, and the inner diameter of the same jet tube 122 is the same everywhere. For example, among the four connecting segments 1211, each connecting segment 1211 is a cylindrical connecting segment 1211 with the same outer diameter everywhere, and among the four jet cavities 1221, each jet cavity 1221 is a cylindrical jet cavity 1221 with the same inner diameter everywhere.

[0051] According to some embodiments of the present invention, at least some of the different connecting segments 1211 have different outer diameters. For example, among the four connecting segments 1211, the outer diameters of the first two connecting segments 1211 are 8 mm, and the outer diameters of the last two connecting segments 1211 are 10 mm.

[0052] According to some embodiments of the present invention, at least some of the different jet tubes 122 have different inner diameters. For example, among the four jet tubes 122, the inner diameters of the first two jet tubes 122 are 16 mm, and the inner diameters of the last two jet tubes 122 are 18 mm.

[0053] According to some embodiments of the present invention, the outer diameters of different connecting segments 1211 gradually increase or decrease along the flow direction of the fluid. For example, along the flow direction of the fluid, the outer diameters of the four connecting segments 1211 gradually increase or decrease.

[0054] According to some embodiments of the present invention, the inner diameters of different jet tubes 122 gradually change along the flow direction of the fluid. For example, along the flow direction of the fluid, the outer diameters of the four jet tubes 122 gradually increase or decrease.

[0055] According to some embodiments of the present invention, the outer diameter of the same connecting segment 1211 changes gradually. For example, the outer diameter of the first connecting segment 1211 gradually increases along the flow direction of the fluid, and the outer diameter of the second connecting segment 1211 gradually decreases along the flow direction of the fluid.

[0056] According to some embodiments of the present invention, the outer wall of part of the connecting section 1211 is arranged parallel to the inner wall of the jet chamber 1221. For example, the outer walls of the two connecting sections 1211 located upstream are arranged parallel to the inner wall of the jet tube 122, and the outer walls of the two connecting sections 1211 located downstream are arranged non-parallel to the inner wall of the jet tube 122.

[0057] See also Figure 2 As shown, according to some embodiments of the present invention, a gap is provided between the outer wall of the jet tube 122 and the inner wall of the heating tube 110. By providing a gap between the outer wall of the jet tube 122 and the inner wall of the heating tube 110, the liquid flow entering the gap after heat exchange with the heating wall surface can form a velocity component parallel to the heating wall surface, so that the liquid flow enters the downstream of the heating tube 110 and enters the subsequent jet tube 122, further forming a jet and exchanging heat with the heating wall surface located downstream.

[0058] According to some embodiments of the present invention, the gap between the outer wall of the jet tube 122 and the inner wall of the heating tube 110 is 1 mm to 5 mm. By controlling the gap to be between 1 mm and 5 mm, it is easy for the jet to enter the gap and perform heat exchange with the corresponding position of the heating wall surface. At the same time, it can also ensure that the liquid flow in the gap can smoothly flow axially to the jet tube 122 located downstream.

[0059] See also Figure 3As shown, according to some embodiments of the present invention, the jet tube 122 is coaxially arranged with the center column 121. By coaxially arranging the jet tube 122 with the center column 121, the volume of each part of the jet cavity 1221 located on the circumferential outer side of the center column 121 can be kept consistent, and the volume of each part of the jet cavity 1221 can be kept relatively consistent. It is ensured that the constraints and resistances to the flow of the fluid in the jet cavity 1221 are relatively uniform, thereby reducing the flow instability, improving the uniformity of the flow, and improving the uniformity of the jet formation, ensuring the stability of the heater 10 during operation and the uniform heating effect on the fluid.

[0060] See also Figure 1 and Figure 2 As shown, according to some embodiments of the present invention, the heater 10 further includes a water inlet structure 130 and a water outlet structure 140, the water inlet structure 130 is connected to the water inlet end of the heating tube 110, and the water outlet structure 140 is connected to the water outlet end of the heating tube 110. By respectively arranging the water inlet structure 130 and the water outlet structure 140 at the water inlet end and the water outlet end of the heating tube 110, it is convenient to connect with the upstream component of the heater 10 in the water dispenser through the water inlet structure 130, and to connect with the downstream component of the heater 10 in the water dispenser through the water outlet structure 140.

[0061] Specifically, in this embodiment, the water inlet structure 130 is provided at the water inlet end of the heating tube 110 through a threaded connection, and the water outlet structure 140 is provided at the water outlet end of the heating tube 110 through a threaded connection, which is convenient for disassembly and assembly, and convenient for taking out the enhanced heat exchange component 120 provided in the heating tube 110 for cleaning, maintenance or replacement. A sealing structure 160 (such as a sealing ring) is provided at the connection position between the water inlet structure 130, the water outlet structure 140 and the heating tube 110 to enhance the sealing performance of the heater 10.

[0062] See also Figure 1 As shown, according to some embodiments of the present invention, the water inlet structure 130 is provided with a water inlet temperature sensor 170 for monitoring the water inlet temperature, and the water outlet structure 140 is provided with a water outlet temperature sensor 180 for monitoring the water outlet temperature. By providing the water inlet temperature sensor 170 and the water outlet temperature sensor 180, the inlet and outlet water temperatures of the heating pipe 110 can be monitored in real time, and the heating effect of the heating pipe 110 can also be reflected by the inlet and outlet water temperatures of the heating pipe 110.

[0063] The water dispenser provided in the embodiment of the utility model comprises a housing and a heater 10 as described in any of the above embodiments, and the heater 10 is arranged in the housing.

[0064] The water dispenser provided by the utility model can improve the heat exchange efficiency between water and the heating wall surface by adopting the above-mentioned heater 10, and can also take into account the heat exchange effect, pressure resistance and stability of the enhanced heat exchange component 120.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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 various embodiments of the utility model.

Claims

1. A heater, characterized in that: include: A heating pipe, wherein the heating pipe has a water inlet port and a water outlet port; An enhanced heat exchange component is arranged in the heating tube, and the enhanced heat exchange component includes a center column and a jet tube. The jet tube is provided with a water inlet at one end facing the water inlet port, a jet cavity is formed in the jet tube, the center column passes through the jet cavity, and the side wall of the jet tube is provided with a jet hole. The ratio of the outer diameter of the center column to the inner diameter of the jet tube is 1:8 to 3:

5.

2. The heater according to claim 1, characterized in that The outer diameter of the central column is 2 mm to 12 mm.

3. The heater according to claim 1, characterized in that The inner diameter of the jet tube is 16 mm to 20 mm.

4. The heater according to claim 1, characterized in that The inner diameter of the jet tube changes gradually along the flow direction of the fluid; And / or, the outer diameter of the central column gradually changes along the axial direction.

5. The heater according to claim 1, characterized in that The enhanced heat exchange component includes a plurality of the jet tubes, and the central column forms a connecting section corresponding to the projection area of ​​each jet tube on the central column, and the ratio between the outer diameter of each connecting section and the inner diameter of the corresponding jet tube is between 1:8 and 3:

5.

6. The heater according to claim 5, characterized in that The ratios of the outer diameters of at least some of the connecting sections to the inner diameters of the corresponding jet tubes are different.

7. The heater according to claim 6, characterized in that The outer diameter of the same connecting section is the same everywhere; And / or, the inner diameter of the same jet tube is the same everywhere; and / or, at least some of the different connecting sections have different outer diameters; And / or, at least some of the different jet cartridges have different inner diameters.

8. The heater according to claim 7, characterized in that The outer diameters of the different connecting sections gradually increase or decrease along the flow direction of the fluid; And / or, the inner diameters of the different jet tubes gradually change along the flow direction of the fluid.

9. The heater according to claim 5, characterized in that The outer diameter of the connecting section changes gradually.

10. The heater according to claim 5, characterized in that At least a portion of the outer wall of the connecting section is arranged parallel to the inner wall of the jet cavity.

11. The heater according to any one of claims 1 to 10, characterized in that: A gap is provided between the outer wall of the jet tube and the inner wall of the heating tube.

12. The heater according to claim 11, characterized in that The gap is 1 mm to 5 mm.

13. The heater according to any one of claims 1 to 10, characterized in that: The jet tube is coaxially arranged with the central column.

14. The heater according to any one of claims 1 to 10, characterized in that: It also includes a water inlet structure and a water outlet structure, wherein the water inlet structure is connected to the water inlet port, and the water outlet structure is connected to the water outlet port.

15. A water dispenser, characterized in that: include: case; The heater according to any one of claims 1 to 14, wherein the heater is disposed on the housing.

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