Heater and water dispenser

Abstract

The utility model relates to the technical field of water drinking equipment, and provides a heater and a water dispenser, the heater comprises a heating pipe, a water inlet pipe, a water outlet pipe and a water outlet pipe, the jet flow assembly is arranged in the heating pipe, the jet flow assembly comprises a jet flow cavity, the jet flow cavity is provided with a water inlet and a jet flow hole, the water inlet faces the water inlet end, the jet flow hole is formed in the side wall, and a water passing gap is formed between the side wall and the inner wall of the heating pipe; the coverage rate of the heating area of the jet flow cavity and the heating pipe in the axial direction of the heating pipe is larger than or equal to 85%-95%, and heat exchange efficiency can be maximized within the limited length of the heating area of the heating pipe.

Description

Technical Field

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

[0002] Water dispenser is a commonly used electrical appliance in modern life, and water dispenser is equipped to supply water in both family life and office life. Some existing water dispensers are provided with heaters, which can heat drinking water to provide hot water.

[0003] In a water dispenser, when hot water is needed, drinking water with a lower temperature will flow in the heating chamber of the heater, and the heater will heat the drinking water to increase its temperature. However, when drinking water flows in the heater, only part of the drinking water can contact the inner wall of the heating chamber to achieve heat exchange. The contact effect between the drinking water and the inner wall of the heating chamber is poor, and the heat that can be transferred is limited, resulting in insufficient heat exchange efficiency. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the related art. To this end, the utility model proposes a heater to solve the defect that when the heater in the water dispenser in the prior art heats the drinking water, the contact effect between the drinking water and the heating inner wall is poor, the heat that can be transferred is limited, and the heat exchange efficiency is poor.

[0005] The utility model also provides a water drinking machine.

[0006] The heater according to the first embodiment of the utility model comprises:

[0007] A heating tube having opposite water inlet and water outlet ends;

[0008] A jet component is arranged in the heating tube, the jet component includes a jet cavity, the jet cavity is provided with a water inlet and a jet hole, the water inlet faces the water inlet end, the jet hole is arranged on the side wall, and a water gap is formed between the side wall and the inner wall of the heating tube; wherein the coverage rate of the jet cavity and the heating area of ​​the heating tube along the axial direction of the heating tube is greater than or equal to 85%~95%.

[0009] In the heater of the embodiment of the utility model, the jet cavity can change the flow direction of at least part of the fluid in the radial direction of the heating tube during the process of the fluid flowing from the water inlet end to the water outlet end of the heating tube, that is, flow toward the inner wall of the heating tube, so that the fluid can contact the inner wall of the heating tube, so that more fluid can obtain the heat of the heating tube, thereby improving the heat exchange efficiency; along the fluid flow direction, the length of the jet cavity is greater than or equal to 85%~95% of the length of the heating area of ​​the heating tube, thereby maximizing the heat exchange efficiency within the limited length of the heating area of ​​the heating tube.

[0010] According to the heater of an embodiment of the utility model, the jet assembly also includes a connecting piece, and a plurality of the jet chambers are arranged on the connecting piece in sequence and at intervals along the length direction of the heating tube, and the sum of the sizes of the plurality of the jet chambers along the length direction of the heating tube is greater than or equal to 90% of the size of the connecting piece along the length direction of the heating tube.

[0011] According to the heater of the embodiment of the utility model, the plurality of jet cavities are arranged in sequence along the length direction of the heating tube, and there is a spacing between two adjacent jet cavities, and the range of the spacing is greater than or equal to 2 mm and less than or equal to 12 mm.

[0012] According to the heater of the embodiment of the present invention, at least some of the multiple intervals formed by the multiple jet cavities are different.

[0013] According to the heater of the embodiment of the utility model, the multiple intervals formed by the multiple jet cavities gradually decrease along the length direction of the heating tube.

[0014] According to the heater of the embodiment of the present utility model, the difference between two adjacent intervals is a constant value.

[0015] According to the heater of the embodiment of the utility model, a plurality of the jet cavities form a plurality of the spacings, and along the flow direction of the fluid, the plurality of the spacings are sequentially divided into at least two intervals, each interval includes at least one of the spacings, the spacings in the same interval are the same, and the spacing in the previous interval is greater than the spacing in the next interval.

[0016] According to the heater of the embodiment of the utility model, the heating tube comprises a heating tube body and a heating element, the heating element is arranged on the heating tube body, and the heating element is configured to heat the heating tube body.

[0017] According to the heater of the embodiment of the utility model, the heating element includes one of the following: a thick film resistor heater, a nano-electronic film heater, a stainless steel heater, and a gas heating device.

[0018] According to the heater of the embodiment of the utility model, it also includes a water inlet pipe joint and a water outlet pipe joint. The water inlet pipe joint is arranged at the water inlet end, and the water outlet pipe joint is arranged at the water outlet end.

[0019] The heater according to the embodiment of the utility model further comprises a first sealing member, through which the water inlet pipe joint is sealedly connected to the water inlet end; and / or,

[0020] A second sealing member, wherein the water outlet pipe joint is sealed and connected to the water outlet end via the second sealing member.

[0021] The utility model provides a water dispenser according to a second embodiment, comprising:

[0022] Water dispenser body;

[0023] The above-mentioned heater is installed in the water dispenser body.

[0024] In addition to the technical problems solved by the utility model, the technical features of the technical solutions constituted, and the advantages brought by the technical solutions with these technical features described above, other technical features of the utility model and the advantages brought by these technical features will be further explained in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a structural schematic diagram of a heater provided in an embodiment of the utility model;

[0027] Figure 2 is a cross-sectional view of a heater provided by an embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the heater provided by the embodiment of the utility model without the heating tube;

[0029] Figure 4 It is a structural schematic diagram of a first positioning member provided in an embodiment of the utility model;

[0030] Figure 5 This is one of the structural schematic diagrams of the jet assembly provided by the embodiment of the utility model;

[0031] Figure 6 This is the second structural schematic diagram of the jet assembly provided by the embodiment of the utility model;

[0032] Figure 7 This is the third structural schematic diagram of the jet assembly provided by the embodiment of the utility model;

[0033] Figure 8 This is the fourth structural schematic diagram of the jet assembly provided by the embodiment of the utility model;

[0034] Fig. 9 It is a structural schematic diagram of a water dispenser provided by an embodiment of the utility model.

[0035] Reference numerals:

[0036] 1. Heat storage device;

[0037] 2. Heater; 21. Heating tube; 22. Jet assembly; 221. Jet cavity; 2211. Bottom wall; 2212. Side wall; 22121. Jet hole; 222. Connector; 2221. First end; 2222. Second end; 23. Water inlet pipe joint; 24. Water outlet pipe joint; 25. Water inlet temperature sensor; 26. First sealing member; 27. First positioning member; 271. First positioning plate; 2711. First flow hole; 272. First protrusion; 28. Second positioning member; 29. ​​Second sealing member; 30. Water outlet temperature sensor; L. Spacing; d. Water flow gap;

[0038] 3. Valve control unit; 4. Pumping unit; 5. Water supply system; 6. Water outlet; 7. First temperature sensor; 8. Second temperature sensor. DETAILED DESCRIPTION

[0039] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0040] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "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 a limitation on 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. In addition, in the description of the present utility model, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more.

[0041] 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 directly connected or indirectly connected 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.

[0042] 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.

[0043] 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.

[0044] like Figure 1 and Figure 2 As shown, the heater 2 of the embodiment of the utility model includes: a heating tube 21 and a jet component 22.

[0045] Among them, the heating tube 21 has a relative water inlet end and a water outlet end. Exemplarily, the heating tube 21 can be constructed as a hollow cylindrical structure, and openings are respectively provided at both ends of the heating tube 21, and the openings at the two ends are respectively the water inlet end and the water outlet end. External drinking water and other fluids can enter the tube cavity of the heating tube 21 through the water inlet end. After the heating tube 21 heats the fluid, the heated fluid can leave the tube cavity of the heating tube 21 through the water outlet end to be supplied to the user.

[0046] The jet component 22 is arranged in the heating tube 21, and the jet component 22 includes a jet chamber 221. The jet chamber 221 is provided with a water inlet and a jet hole 22121. The water inlet faces the water inlet end, and the jet hole 22121 is arranged on the side wall 2212 of the jet chamber 221. A water gap d is formed between the side wall 2212 of the jet chamber 221 and the inner wall of the heating tube 21, that is, the jet hole 22121 faces the inner wall of the heating tube 21; wherein, the coverage rate of the jet chamber 221 and the heating area of ​​the heating tube 21 along the axial direction of the heating tube 21 is in the range of greater than or equal to 85% to 95%.

[0047] Among them, the jet cavity 221 can change the flow direction of at least part of the fluid in the radial direction of the heating tube 21 when the fluid flows from the water inlet end to the water outlet end of the heating tube 21, that is, flow toward the inner wall of the heating tube 21, so that the fluid can contact the inner wall of the heating tube 21, so that more fluid can obtain the heat of the heating tube 21, thereby improving the heat exchange efficiency.

[0048] It should be noted that the coverage of the jet cavity 221 and the heating area of ​​the heating tube 21 along the axial direction of the heating tube 21 is not less than 85% to 95%, that is, along the fluid flow direction, the length of the jet cavity 221 is greater than or equal to 85% to 95% of the length of the heating area of ​​the heating tube 21, thereby maximizing the heat exchange efficiency within the limited length of the heating area of ​​the heating tube 21. Exemplarily, the length of the jet cavity 221 is 85% of the length of the heating area of ​​the heating tube 21, or the length of the jet cavity 221 is 90% of the length of the heating area of ​​the heating tube 21, or the length of the jet cavity 221 is 95% of the length of the heating area of ​​the heating tube 21.

[0049] like Figure 1 and Figure 2 As shown, the jet assembly 22 also includes a connector 222, and a plurality of jet cavities 221 are sequentially spaced apart on the connector 222 along the length direction of the heating tube 21. The connector 222 is used to fix the plurality of jet cavities 221, wherein there is a certain relationship between the sum of the lengths of the plurality of jet cavities 221 and the length of the connector 222.

[0050] It is particularly important to point out that in order to ensure that the fluid in each part along the length direction of the heating tube 21 can contact the inner wall of the heating tube 21 under the guidance of the jet cavity 221 to improve the heat exchange effect, the number of the jet cavity 221 can be multiple, and the multiple jet cavities 221 are arranged in sequence along the length direction of the heating tube 21, and the sum of the dimensions of the multiple jet cavities 221 along the length direction of the heating tube 21 is greater than or equal to 90% of the dimension of the connecting piece 222 along the length direction of the heating tube 21.

[0051] In other words, the length direction of the jet cavity 221 , the length direction of the connecting piece 222 and the length direction of the heating tube 21 are consistent, so that the sum of the lengths of the plurality of jet cavities 221 is greater than or equal to 90% of the length of the connecting piece 222 .

[0052] In actual applications, in the process of the fluid flowing from the water inlet end to the water outlet end of the heating tube 21, a part of the fluid flows directly through the water gap d, and the other part of the fluid enters the interior of the previous jet chamber 221 through the water inlet, and then flows toward the inner wall of the heating tube 21 through the jet hole 22121 of the jet chamber 221 to achieve initial heating. After that, part of the fluid will enter the interior of the next jet chamber 221 through the water inlet again, and then flow toward the inner wall of the heating tube 21 through the jet hole 22121 of the jet chamber 221 to achieve reheating. This cycle will eventually achieve multiple heating of the fluid in the heating tube 21.

[0053] It should be noted that in order to ensure that the fluid flowing through the water gap d and the fluid flowing out of the jet hole 22121 of the previous jet chamber 221 can enter the interior of the next jet chamber 221 again, the two adjacent jet chambers 221 are arranged at intervals. In order to maximize the heat exchange efficiency within the limited length of the connecting piece 222, the sum of the dimensions of the multiple jet chambers 221 along the length direction of the heating tube 21 is greater than or equal to 90% of the dimension of the connecting piece 222 along the length direction of the heating tube 21.

[0054] In an optional embodiment, a plurality of jet cavities 221 are sequentially spaced apart along the length direction of the heating tube 21, and a spacing L is provided between two adjacent jet cavities 221, and the spacing L ranges from greater than or equal to 2 mm to less than or equal to 12 mm. In other words, the spacing L can be 2 mm, 12 mm, or any value between 2 mm and 12 mm.

[0055] In this way, it can be ensured that the fluid flowing through the water gap d and the fluid flowing out of the jet hole 22121 of the previous jet cavity 221 can enter the interior of the next jet cavity 221 again.

[0056] In an optional embodiment, at least some of the multiple intervals L formed by the multiple jet cavities 221 are different.

[0057] It should be noted that some of the multiple intervals L formed by the multiple jet cavities 221 are the same, and the other parts are different. For example, four jet cavities 221 form three intervals L, two of which are different from the other.

[0058] It should be particularly pointed out that the multiple intervals L formed by the multiple jet cavities 221 may also be the same.

[0059] In an optional embodiment, the multiple intervals L formed by the multiple jet cavities 221 gradually decrease along the length direction of the heating tube 21 .

[0060] It should be noted that the distance L between any two adjacent jet cavities 221 gradually decreases from the water inlet end to the water outlet end, so that a fluid with a sufficiently high temperature can be obtained at the water outlet end.

[0061] In an optional embodiment, the difference between two adjacent spacings L is a constant value.

[0062] Exemplarily, the four jet cavities 221 are formed with three spacings L. Along the length direction of the heating tube 21, the first spacing L is 8 mm, the second spacing L is 6 mm, and the third spacing L is 4 mm. Thus, the difference between two adjacent spacings L is 2 mm.

[0063] In an optional embodiment, multiple jet cavities 221 form multiple spacings L. Along the flow direction of the fluid, the multiple spacings L are sequentially divided into at least two intervals, each interval includes at least one spacing L, the spacings L in the same interval are the same, and the spacing L of the previous interval is greater than the spacing L of the next interval.

[0064] Exemplarily, the four jet cavities 221 are formed with three spacings L. Along the length direction of the heating tube 21, the three spacings L are named as the first spacing L, the second spacing L and the third spacing L, respectively. The first spacing L and the second spacing L belong to the first interval, and the third spacing L belongs to the second interval. The first spacing L and the second spacing L are 6 mm, and the third spacing L is 4 mm.

[0065] In an optional embodiment, if Figure 5 As shown, the jet cavity 221 includes a bottom wall 2211 and a side wall 2212, and the bottom side of the side wall 2212 is enclosed by the bottom wall 2211 and close to the edge of the bottom wall 2211. The connecting member 222 is extended along the length direction of the heating tube 21, and the connecting member 222 is sequentially installed on multiple bottom walls 2211 corresponding to the multiple jet cavities 221.

[0066] The side wall 2212 is generally constructed as a hollow cylindrical structure, the axis of the side wall 2212 is generally colinear with the axis of the heating tube 21, one end of the side wall 2212 is a water inlet, and faces the water inlet end of the heating tube 21, and the other end is connected to the bottom wall 2211, and faces the water outlet end of the heating tube 21. The side wall 2212 is provided with a jet hole 22121, and the jet hole 22121 can be a circular hole, and the jet hole 22121 can make the inner side of the side wall 2212 and the water gap d communicate with each other.

[0067] In addition, the bottom wall 2211 is generally configured as a plate-like structure with a certain thickness. The bottom wall 2211 can block the fluid entering the inner side of the side wall 2212 and change the flow direction of the fluid, so that the flow direction of the fluid is changed from the axial direction along the heating tube 21 to the radial outward direction along the heating tube 21.

[0068] In actual use, when the fluid in the heating tube 21 flows from one end to the other end of the heating tube 21, after the fluid enters the inner side of the side wall 2212, the bottom wall 2211 can block the fluid, allowing the fluid to flow outward toward the inner wall of the heating tube 21 in the radial direction of the heating tube 21. Moreover, the bottom wall 2211 and the side wall 2212 can be sealed, so that all the fluid inside the side wall 2212 can flow outward toward the inner wall of the heating tube 21 in the radial direction of the heating tube 21.

[0069] Moreover, a sealed connection can be achieved between the end of the side wall 2212 and the bottom wall 2211 , so that the fluid inside the side wall 2212 needs to flow toward the inner wall of the heating tube 21 through the jet holes 22121 .

[0070] In actual use, when the bottom wall 2211 blocks the fluid from flowing outward in the radial direction of the heating tube 21 toward the inner wall of the heating tube 21, part of the fluid close to the heating tube 21 can directly enter the water gap d between the side wall 2212 and the heating tube 21, and obtain the heat of the heating tube 21 to achieve heating, and the rest of the fluid will enter the inner side of the side wall 2212. Due to the obstruction of the bottom wall 2211, the fluid will use the jet hole 22121 to enter between the side wall 2212 and the heating tube 21.

[0071] Correspondingly, the side wall 2212 may also be made of a metal material, such as stainless steel, and the side wall 2212 may be integrally formed with the bottom wall 2211 , or may be fixedly connected to the bottom wall 2211 by means of bolts or other structures.

[0072] In addition, in order to connect multiple jet chambers 221 , the connecting piece 222 is coaxially arranged in the heating tube 21 , the bottom wall 2211 is connected to the outer wall of the connecting piece 222 and extends outward along the radial direction of the connecting piece 222 , and the side wall 2212 is sleeved on the outer periphery of the connecting piece 222 .

[0073] Exemplarily, the connector 222 has a certain length and can be made of a metal material, such as stainless steel. The connector 222 is coaxially arranged in the heating tube 21, and the axis of the connector 222 is substantially parallel to the axis of the heating tube 21. Optionally, the connector 222 is coaxially arranged at the axis of the heating tube 21.

[0074] Moreover, the connecting member 222 can be either a hollow tubular structure or a solid columnar structure. In the present embodiment, in order to reduce the overall weight of the heater, the connecting member 222 is a hollow tubular structure.

[0075] In this embodiment, the connecting member 222 is mainly used to support the jet cavity 221, and the connecting member 222 can be fixedly arranged in the heating tube 21. In this embodiment, the connecting member 222 is detachably arranged in the heating tube 21, and both ends of the connecting member 222 can be fixed by means of a connecting structure. Alternatively, the connecting member 222 can also be directly fixedly arranged inside the heating tube 21 by means of other structural members.

[0076] Optionally, the bottom wall 2211 may be made of a metal material, such as stainless steel, and the bottom wall 2211 may be fixedly connected to the connecting member 222 by welding or the like, or may be fixedly connected to the connecting member 222 by means of bolts or the like.

[0077] In an optional embodiment, after the fluid enters the water gap d between the side wall 2212 and the heating tube 21, the fluid can form a liquid layer with a certain thickness. On the one hand, the fluid can contact the inner wall of the heating tube 21 to receive heat, and on the other hand, it will flow toward the water outlet end of the heating tube 21. At this time, in order to ensure the water outlet efficiency while taking into account the heating efficiency of the liquid, the thickness of the liquid layer cannot be too large, nor can it be too small.

[0078] For example, when the thickness of the liquid layer between the side wall 2212 and the heating tube 21 is too large, the heat in the liquid layer cannot be effectively transferred in its thickness direction, which may cause the temperature of the liquid to fail to meet the usage requirements. When the thickness of the liquid layer between the side wall 2212 and the heating tube 21 is too small, the flow rate of the liquid in the axial direction of the heating tube 21 is small, which may cause the external output flow rate of the liquid to be too small.

[0079] Based on this, in this embodiment, through experimental research, combined with the flow rate of the liquid in the heating tube 21, the distance between the outer wall surface of the side wall 2212 and the inner wall surface of the heating tube 21 can be set to be greater than or equal to 1 mm and less than or equal to 5 mm. In other words, the range of the water gap d is greater than or equal to 1 mm and less than or equal to 5 mm.

[0080] In actual application scenarios, the fluid to be heated can enter the heating tube 21 through the water inlet end, and the heating tube 21 can heat the fluid in the heating tube 21, wherein when the fluid flows in the heating tube 21 toward the water outlet end, part of the fluid will enter the inner side of the side wall 2212, and under the action of the fluid pressure, the fluid on the inner side of the side wall 2212 will flow outward along the radial direction of the heating tube 21 under the blocking action of the bottom wall 2211, and enter the gap between the side wall 2212 and the heating tube 21 through the jet hole 22121 on the side wall 2212, and the gap between the side wall 2212 and the heating tube 21 is 1 to 5 mm. At this time, all the fluid in the heating tube 21 can receive the heat of the heating tube 21 by forming a 1 to 5 mm thick liquid layer between the side wall 2212 and the heating tube 21, and finally, these fluids flow out through the water outlet end.

[0081] It can be seen that in the embodiment of the utility model, by arranging the heater 2 in the heater, the fluid in the heating tube 21 can be forcibly guided to flow toward the inner wall of the heating tube 21, so that the fluid can fully exchange heat with the heating tube 21, and by limiting the gap between the side wall 2212 and the heating tube 21 to 1 to 5 mm, a 1 to 5 mm thick liquid layer is formed between the jet cavity 221 and the heating tube 21. While ensuring a certain flow rate, all the fluids can fully receive the heat from the heating tube 21, and can take into account both the flow supply demand and the heat acquisition efficiency, thereby ultimately improving the heat exchange effect.

[0082] In one embodiment, the distance between the outer wall surface of the side wall 2212 and the inner wall surface of the heating tube 21 can be 1 mm. At this time, a 1 mm thick liquid layer can be formed between the side wall 2212 and the heating tube 21. The thickness of the liquid layer is relatively thin, and the fluid in the liquid layer can quickly heat up under the heat transfer of the heating tube 21.

[0083] In one embodiment, the distance between the outer wall surface of the side wall 2212 and the inner wall surface of the heating tube 21 can be 2 mm. At this time, a 2 mm thick liquid layer can be formed between the side wall 2212 and the heating tube 21. The thickness of the liquid layer is moderate, and the fluid in the liquid layer can quickly heat up under the heat transfer of the heating tube 21, and the fluid has a certain flow rate.

[0084] In one embodiment, the distance between the outer wall surface of the side wall 2212 and the inner wall surface of the heating tube 21 can be 4 mm. At this time, a 4 mm thick liquid layer can be formed between the side wall 2212 and the heating tube 21. The thickness of the liquid layer is relatively thick, and the fluid in the liquid layer has sufficient flow rate and can be quickly supplied to the outside. In addition, the fluid can also be quickly heated up under the heat transfer of the heating tube 21.

[0085] Furthermore, when the fluid flows from the water inlet end to the water outlet end in the heating tube 21, part of the fluid will enter the inner side of the side wall 2212, and then be sprayed onto the inner wall surface of the heating tube 21 through the jet hole 22121, and part of the fluid will directly enter the water gap d between the side wall 2212 and the heating tube 21.

[0086] At this time, the flow direction of the fluid directly entering between the side wall 2212 and the heating tube 21 is parallel to the axial direction of the heating tube 21. During the heating process, on the one hand, this part of the fluid is not directly sprayed onto the inner wall surface of the heating tube 21, resulting in a poor heating effect. On the other hand, after this part of the fluid enters between the side wall 2212 and the heating tube 21, it will affect the heat exchange effect of the fluid sprayed toward the inner wall surface of the heating tube 21 through the jet hole 22121, which will also result in a poor heating effect. Moreover, if the flow rate of the fluid between the side wall 2212 and the heating tube 21 is too fast, the fluid will not be able to fully contact the inner wall surface of the heating tube 21, and effective heating cannot be achieved.

[0087] Based on this, in this embodiment, the side wall 2212 is provided with a water retaining wing, which protrudes from the outer wall surface of the side wall 2212 and extends along the circumferential direction of the side wall 2212. The height of the water retaining wing protruding from the outer wall surface of the side wall 2212 ranges from greater than or equal to 0.2 mm to less than or equal to 0.9 mm.

[0088] For example, the water retaining wing can be constructed as an annular flange structure protruding from the outer wall surface of the side wall 2212 and extending along the circumferential direction of the side wall 2212, and the height of the annular flange structure protruding from the outer wall surface of the side wall 2212 in the radial direction of the side wall 2212 is 0.2 to 0.9 mm. Moreover, the water retaining wing can be integrally formed with the side wall 2212.

[0089] By setting up the water retaining wing, the fluid in the heating tube 21 can be prevented from directly entering between the outer wall surface of the side wall 2212 and the inner wall surface of the heating tube 21, allowing more fluid to enter the inner side of the side wall 2212 and then contact the inner wall surface of the heating tube 21 after changing the flow direction. Alternatively, the flow rate of the fluid in the heating tube 21 between the heating tube 21 and the side wall 2212 can be slowed down so that the fluid can fully absorb heat.

[0090] In actual application scenarios, when it is necessary to heat drinking water or other fluids in a water dispenser with the help of the heater in this embodiment, the fluid to be heated can enter the heating tube 21 through the water inlet end, and the heating tube 21 can heat the fluid in the heating tube 21. When the fluid flows toward the water outlet end in the heating tube 21, part of the fluid will enter the inner side of the side wall 2212. Under the pressure of the fluid, the fluid on the inner side of the side wall 2212 will flow outward along the radial direction of the heating tube 21 under the blocking effect of the bottom wall 2211, and enter the gap between the side wall 2212 and the heating tube 21 through the jet hole 22121 on the side wall 2212. In addition, due to the jet cavity 22 The side wall 2212 in 1 is provided with a water retaining wing, and the height of the water retaining wing is 0.2 to 0.9 mm. The water retaining wing has a certain height, which can prevent the fluid in the heating tube 21 from directly entering the gap between the side wall 2212 and the heating tube 21, so that more fluid can enter the inner side of the side wall 2212, so as to ensure that more fluid can be sprayed to the inner wall surface of the heating tube 21 through the jet hole 22121. At the same time, it can also ensure that there is a sufficient gap between the side wall 2212 and the heating tube 21, thereby ensuring that the fluid sprayed between the side wall 2212 and the heating tube 21 through the jet hole 22121 can fully absorb heat, and finally, these fluids flow out through the water outlet.

[0091] It can be seen that in the embodiment of the utility model, by setting the jet cavity 221 in the heater, the fluid in the heating tube 21 can be forcibly guided to flow toward the inner wall of the heating tube 21, so that the fluid can fully exchange heat with the heating tube 21. Moreover, by setting the water retaining wing and setting the height of the water retaining wing to 0.2 to 0.9 mm, the fluid can be prevented from directly entering the gap between the side wall 2212 and the heating tube 21, so that the fluid can be sprayed onto the inner wall surface of the heating tube 21 to fully receive the heat from the heating tube 21. At the same time, it can also ensure that there is a certain gap between the side wall 2212 and the heating tube 21, thereby ensuring that the fluid sprayed between the side wall 2212 and the heating tube 21 through the jet hole 22121 can fully absorb heat, improve the heat exchange effect, and ultimately improve the heat exchange effect.

[0092] In one embodiment, the water retaining wing is disposed at one end of the side wall 2212 away from the bottom wall 2211 .

[0093] In this embodiment, the water retaining wing is arranged on the side of the side wall 2212 close to the water inlet end of the heating tube 21. At this time, the water retaining wing can directly block the fluid in the heating tube 21 from entering the gap between the jet tube and the heating tube 21, so as to allow more fluid to enter the inner side of the side wall 2212, thereby ensuring that more fluid can be sprayed onto the inner wall surface of the heating tube 21 through the jet hole 22121.

[0094] Optionally, the gap between the water retaining wing and the inner wall surface of the heating tube 21 may be less than or equal to 1 mm.

[0095] In one embodiment, the distance between the outer wall surface of the side wall 2212 and the inner wall surface of the heating tube 21 is 1 mm, and at this time, the height of the water retaining wing is 20-90% of the distance L between the outer wall surface of the side wall 2212 and the inner wall surface of the heating tube 21. Based on this, the range of the distance between the outer wall surface of the water retaining wing and the inner wall surface of the heating tube 21 is greater than or equal to 0.1 mm and less than or equal to 0.8 mm.

[0096] Optionally, the water retaining wing can directly abut against the inner wall surface of the heating tube 21 to completely prevent the fluid from directly entering the gap between the water retaining wing and the heating tube 21, thereby achieving a better blocking effect on the fluid. In this way, there is a certain distance between the position of the water retaining wing and the bottom wall 2211 to ensure that the fluid passing through the previous jet cavity 221 can enter the next jet cavity 221.

[0097] In an optional embodiment, in order to enable the fluid in the jet chamber 221 to effectively flow to the heating tube 21, the number of jet holes 22121 is multiple, wherein the multiple jet holes 22121 are arranged in sequence at intervals along the circumferential direction of the side wall 2212; and / or, the multiple jet holes 22121 are arranged in sequence at intervals along the axial direction of the side wall 2212.

[0098] Exemplarily, when a plurality of jet holes 22121 are arranged at intervals along the circumferential direction of the side wall 2212, for example, 12 to 20 jet holes 22121 are arranged at intervals along the circumferential direction of the side wall 2212, the fluid on the inner side of the side wall 2212 can flow from the circumferential side of the side wall 2212 to the water gap d through the plurality of jet holes 22121, so that the fluid can contact the inner wall of the heating tube 21 in the circumferential direction of the side wall 2212 to obtain more heat.

[0099] When a plurality of jet holes 22121 are arranged at intervals along the axial direction of the side wall 2212, for example, 2 to 4 jet holes 22121 are arranged at intervals along the axial direction of the side wall 2212, the fluid on the inner side of the side wall 2212 can flow to the water gap d in the axial direction of the side wall 2212 through the plurality of jet holes 22121, thereby avoiding excessive accumulation of the fluid on the inner side of the side wall 2212, thereby improving the flow efficiency of the fluid, and also allowing the fluid on the inner side of the side wall 2212 to contact the inner wall of the heating tube 21 in advance, thereby improving the heat exchange efficiency of the fluid.

[0100] In an optional embodiment, the shape of the connecting member 222 is adapted to the shape of the side wall 2212, and a water inlet gap is left between the outer periphery of the connecting member 222 and the inner surface of the side wall 2212. Exemplarily, when the side wall 2212 is a hollow cylindrical structure, the connecting member 222 can be a cylindrical structural member.

[0101] In order to allow the fluid in the jet cavity 221 to fully contact the inner wall of the heating tube 21 and allow the fluid to obtain more heat, the water inlet gap between the outer periphery of the connector 222 and the inner surface of the side wall 2212 is larger than the water gap d between the side wall 2212 and the heating tube 21. The range of the water inlet gap may be greater than or equal to 8 mm and less than or equal to 18 mm. For example, the water inlet gap may be 10 mm.

[0102] Exemplarily, the axis lines of the connection member 222, the side wall 2212 and the heating tube 21 are substantially collinear with each other, and in the radial direction of the connection member 222, the distance between the outer wall of the connection member 222 and the inner wall of the side wall 2212 is greater than the distance between the outer wall of the side wall 2212 and the inner wall of the heating tube 21. Optionally, the ratio of the distance between the outer wall of the connection member 222 and the inner wall of the side wall 2212 to the distance between the outer wall of the side wall 2212 and the inner wall of the heating tube 21 is 3 to 5.

[0103] Therefore, in practice, when the fluid in the jet chamber 221 flows from one end to the other end of the heating tube 21, more fluid can enter between the connecting piece 222 and the side wall 2212, and these fluids then enter between the side wall 2212 and the heating tube 21 through the jet hole 22121, thereby ensuring that more fluid can flow toward the inner wall of the heating tube 21, achieving more heat exchange, and thus improving the heat exchange efficiency.

[0104] In an optional embodiment, the range of the spacing L between any two adjacent jet cavities 221 in the length direction of the heating tube 21 is greater than or equal to 2 mm and less than or equal to 12 mm. Exemplarily, in the axial direction of the connecting member 222, there is a certain spacing L between any two adjacent jet cavities 221, and the range of the spacing L is greater than or equal to 4 mm and less than or equal to 10 mm.

[0105] In practice, when the fluid flows from one end to the other end of the heating tube 21, the fluid will enter the interior of the first jet chamber 221, and then flow toward the heating tube 21 through the jet hole 22121 of the first jet chamber 221 to achieve initial heating. After that, the fluid will enter the interior of the second jet chamber 221, and then flow toward the heating tube 21 through the jet hole 22121 of the second jet chamber 221 to achieve reheating. This reciprocating cycle will eventually achieve overall heating of the fluid.

[0106] In an optional embodiment, the number of the jet chambers 221 is 2 to 6. Figure 6 As shown, the number of the jet chambers 221 is 2. Figure 7 As shown, the number of the jet chambers 221 is 3. Figure 8 As shown, the number of the jet chambers 221 is four.

[0107] Exemplarily, when the length of the connecting piece 222 is 80 mm and the number of the jet chambers 221 is 2, the sum of the lengths of the two jet chambers 221 is 72 mm, the length of a single jet chamber 221 is 36 mm, and the spacing L between the two jet chambers 221 is 8 mm.

[0108] When the length of the connecting piece 222 is 80 mm and the number of the jet cavities 221 is 3, the sum of the lengths of the three jet cavities 221 is 72 mm, the length of a single jet cavity 221 is 24 mm, and the distance L between any two jet cavities 221 is 4 mm.

[0109] When the length of the connecting piece 222 is 80 mm and the number of the jet cavities 221 is four, the sum of the lengths of the four jet cavities 221 is 72, the length of a single jet cavity 221 is 18 mm, and the distance L between any two jet cavities 221 is 2.67 mm.

[0110] It is particularly important to point out that, when the length of the connecting member 222 is 80 mm and the number of the jet chamber 221 is 1, the length of the jet chamber 221 can be 72 mm, and the jet chamber 221 can be set in the middle of the connecting member 222. The length of the jet chamber 221 can be selected according to actual needs, and the length of the jet chamber 221 is greater than 90% of the length of the connecting member 222.

[0111] In an optional embodiment, if Figure 1 , Figure 2 and Figure 3 As shown, it also includes a water inlet pipe joint 23 and a water outlet pipe joint 24. The water inlet pipe joint 23 is arranged at the water inlet end, and the water outlet pipe joint 24 is arranged at the water outlet end.

[0112] Among them, the water inlet pipe joint 23 can guide the external fluid into the heating tube 21, and the water inlet pipe joint 23 may include: a water inlet body, in which a water supply port and a water inlet cavity are arranged, and the water supply port is connected to the inside of the heating tube 21 via the water inlet cavity.

[0113] Exemplarily, the water inlet body can be made of metal material, such as stainless steel, and a water supply port is provided at the first end of the water inlet body, which is connected to the water inlet cavity, and a second end of the water inlet body can be connected to the heating pipe 21.

[0114] As an implementation method, the water inlet body can be fixedly connected to the end of the heating pipe 21 by means of a flange structure.

[0115] In actual use, the first end of the water inlet body can be connected to the water inlet pipe, and the fluid such as drinking water supplied in the water inlet pipe can enter the water inlet cavity through the water supply port, and then enter the heating tube 21.

[0116] In one embodiment, the water outlet pipe joint 24 can guide the fluid in the heating pipe 21 to be supplied to the outside. The water outlet pipe joint 24 may include: a water outlet body, in which a water inlet and a water outlet cavity are provided. The water inlet is connected to the heating pipe 21 via the water outlet cavity.

[0117] Similarly, the water outlet body can be made of metal material, such as stainless steel. The first end of the water outlet body is provided with a water inlet, which is connected to the water outlet cavity. The second end of the water outlet body can be connected to the heating pipe 21, and the water outlet cavity is connected to the heating pipe 21.

[0118] As an implementation method, the water outlet body can be fixedly connected to the end of the heating pipe 21 by means of a flange structure.

[0119] In actual use, the first end of the water outlet body can be connected to the water outlet pipe, and the heated fluid in the heating tube 21 can enter the water outlet cavity and then enter the water outlet pipe through the water inlet, thereby being supplied to the outside.

[0120] In an alternative embodiment, Figure 2 and Figure 3 As shown, it also includes a first sealing member 26, and the water inlet pipe joint 23 is sealed and connected to the water inlet end through the first sealing member 26; and / or,

[0121] The second sealing member 29 , the water outlet pipe joint 24 is sealed and connected to the water outlet end through the second sealing member 29 .

[0122] It should be noted that the first sealing member 26 is sleeved on the end of the water inlet body facing the heating tube 21 , and the first sealing member 26 can form a seal between the water inlet body and the heating tube 21 .

[0123] Exemplarily, the first seal 26 can be made of a high-temperature resistant rubber material, the second end of the water inlet body can be partially inserted into the heating pipe 21, the first seal 26 is sleeved on the second end of the water inlet body, and the first seal 26 is provided with a radially outwardly extending annular abutment flange on one side close to the water supply port.

[0124] During installation, the first seal 26 can be partially inserted into the heating tube 21 following the second end of the water inlet body. The first seal 26 can simultaneously abut against the second end of the water inlet body and the inner wall of the heating tube 21. At the same time, the annular abutting flange of the first seal 26 can also simultaneously abut against the ends of the water inlet body and the heating tube 21. Afterwards, after the water inlet body is fixed to the end of the heating tube 21, the first seal 26 can be used to achieve sealing between the water inlet body and the heating tube 21.

[0125] Moreover, in order to improve the sealing effect, a plurality of annular sealing flanges may be provided on the outer periphery of the first sealing member 26 . The plurality of annular sealing flanges are arranged at intervals along the axial direction of the heating tube 21 , and the plurality of annular sealing flanges can all abut against the inner wall of the heating tube 21 .

[0126] Therefore, by providing a plurality of annular sealing flanges on the outer periphery of the first sealing member 26 , the sealing effect between the heating tube 21 and the first sealing member 26 can be further improved.

[0127] In addition, the second sealing member 29 is sleeved on the end of the water outlet body facing the heating pipe 21 , and the second sealing member 29 can form a seal between the water outlet body and the heating pipe 21 .

[0128] Similarly, the second seal 29 can be made of a high-temperature resistant rubber material, and the second end of the water outlet body can be partially inserted into the heating pipe 21. The second seal 29 is sleeved on the second end of the water outlet body, and a radially outwardly extending annular abutment flange is provided on one side of the second seal 29 close to the water outlet.

[0129] During installation, the second seal 29 can be partially inserted into the heating tube 21 following the second end of the water outlet body. The second seal 29 can simultaneously abut the second end of the water outlet body and the inner wall of the heating tube 21. At the same time, the annular abutting flange of the second seal 29 can also simultaneously abut the ends of the water outlet body and the heating tube 21. Afterwards, after the water outlet body is fixed to the end of the heating tube 21, the second seal 29 can be used to achieve sealing between the water outlet body and the heating tube 21.

[0130] Moreover, in order to improve the sealing effect, a plurality of annular sealing flanges may be provided on the outer periphery of the second sealing member 29 . The plurality of annular sealing flanges are arranged at intervals along the axial direction of the heating tube 21 , and the plurality of annular sealing flanges can all abut against the inner wall of the heating tube 21 .

[0131] Therefore, by providing a plurality of annular sealing flanges on the outer periphery of the second sealing member 29 , the sealing effect between the heating tube 21 and the second sealing member 29 can be further improved.

[0132] In an optional embodiment, if Figure 2 , Figure 3 and Figure 4 As shown, the connecting member 222 has a first end 2221 and a second end 2222 relative to each other, the first end 2221 faces the water inlet end, and the second end 2222 faces the water outlet end, the first end 2221 protrudes from the water inlet of the corresponding jet cavity 221, and the second end 2222 protrudes from the outside of the bottom wall 2211 of the corresponding jet cavity 221.

[0133] The inner side of the bottom wall 2211 of the jet cavity 221 refers to a side facing the inside of the jet cavity 221 , and the outer side of the bottom wall 2211 of the jet cavity 221 refers to a side away from the inside of the jet cavity 221 .

[0134] It should be noted that the sum of the dimensions of the plurality of jet cavities 221 along the length direction of the heating tube 21 is smaller than the dimension of the connector 222 along the length direction of the heating tube 21. In other words, the sum of the lengths of the plurality of jet cavities 221 is smaller than the length of the connector 222. In addition, the first end 2221 of the connector 222 is located outside the jet cavity 221 adjacent to the water inlet end, and the second end 2222 of the connector 222 is located outside the jet cavity 221 adjacent to the water outlet end. In this way, without affecting the jet cavity 221, it is convenient to realize the overall fixation of the connector 222 through the first end 2221 and the second end 2222.

[0135] In addition, at least part of the water inlet pipe joint 23 is internally connected to the heating pipe 21, and at least part of the water outlet pipe joint 24 is internally connected to the heating pipe 21. In other words, the second end of the water inlet body can be partially inserted into the heating pipe 21, and the second end of the water outlet body can be partially inserted into the heating pipe 21.

[0136] The first positioning member 27 includes a first positioning plate 271 and a plurality of first flow holes 2711 arranged around the center of the first positioning plate 271, and the second positioning member 28 includes a second positioning plate and a plurality of second flow holes arranged around the center of the second positioning plate. For example, the plurality of flow holes are arranged in a circular array, and the flow holes can be circular or elliptical.

[0137] The first positioning plate 271 is clamped between the water inlet pipe joint 23 and the first end 2221, that is, the first positioning plate 271 is clamped between the second end of the water inlet body and the first end 2221 of the connecting piece 222, and the water inlet chamber can be connected with the interior of the heating tube 21 through the first flow hole 2711, so that the fluid in the water inlet chamber can enter the jet chamber 221 or the water flow gap d after passing through the first flow hole 2711. Similarly, the second positioning plate is clamped between the water outlet pipe joint 24 and the second end 2222. That is, the second positioning plate is clamped between the second end of the water outlet body and the second end 2222 of the connecting piece 222, and the water outlet chamber can be connected with the interior of the heating tube 21 through the second flow hole, so that the fluid can enter the water outlet chamber through the second flow hole after passing through the water flow gap d.

[0138] It is particularly important to point out that the first seal 26 is provided with a radially inwardly extending annular abutting flange on the side away from the water supply port, and the second seal 29 is provided with a radially inwardly extending annular abutting flange on the side away from the water delivery port. In this way, the first positioning disc 271 is sandwiched between the annular abutting flange of the first seal 26 and the first end 2221 of the connector 222, and the second positioning disc is sandwiched between the annular abutting flange of the second seal 29 and the second end 2222 of the connector 222.

[0139] In an optional embodiment, a first protrusion 272 is provided on the side of the first positioning plate 271 facing the first end 2221, and a first groove matched with the first protrusion 272 is provided on the side of the first end 2221 facing the first positioning plate 271, so that the first end 2221 of the connecting member 222 can be fixed by assembling the first protrusion 272 and the first groove.

[0140] Alternatively, a first groove matching the first end 2221 is provided on one side of the first positioning plate 271 facing the first end 2221. Thus, the first end 2221 of the connecting member 222 can be fixed by inserting the first end 2221 of the connecting member 222 into the first groove.

[0141] In an optional embodiment, a second protrusion is provided on the side of the second positioning plate facing the second end 2222, and a second groove matching the second protrusion is provided on the side of the second end 2222 facing the second positioning plate; in this way, the second end 2222 of the connecting member 222 can be fixed by assembling the second protrusion and the second groove.

[0142] Alternatively, a second groove matching the second end 2222 is provided on one side of the second positioning plate facing the second end 2222. In this way, the second end 2222 of the connecting member 222 can be fixed by inserting the second end 2222 of the connecting member 222 into the second groove.

[0143] It is particularly important to point out that a first protrusion 272 is provided on the side of the first positioning disc 271 facing the first end 2221, a first groove matching the first protrusion 272 is provided on the side of the first end 2221 facing the first positioning disc 271, and a second groove matching the second end 2222 is provided on the side of the second positioning disc facing the second end 2222. In this way, the first end 2221 and the second end 2222 of the connecting member 222 are provided differently, so that the first end 2221 and the second end 2222 of the connecting member 222 are easily identified, so that the connecting member 222, the first positioning disc 271 and the second positioning disc are easily assembled.

[0144] In an optional embodiment, if Figure 2As shown, it also includes an inlet water temperature sensor 25 and an outlet water temperature sensor 30 . The inlet water temperature sensor 25 is arranged at the inlet water pipe joint 23 , and the outlet water temperature sensor 30 is arranged at the outlet water pipe joint 24 .

[0145] The heater 2 is configured to control the heating temperature of the heating pipe 21 according to the inlet water temperature of the inlet water temperature sensor 25 and the outlet water temperature of the outlet water temperature sensor 30 .

[0146] Specifically, the water inlet temperature sensor 25 is inserted into the water inlet cavity, and the water inlet temperature sensor 25 is used to sense the temperature in the water inlet cavity. For example, the side of the water inlet body is provided with a mounting hole connected to the water inlet cavity, and the water inlet temperature sensor 25 can be sealed and inserted into the water inlet cavity through the mounting hole. Therefore, by arranging the water inlet temperature sensor 25 in the water inlet cavity, the temperature in the water inlet cavity can be accurately obtained, so as to effectively control the heating temperature.

[0147] Similarly, the outlet water temperature sensor 30 is inserted in the outlet water cavity, and the outlet water temperature sensor 30 is used to sense the temperature in the outlet water cavity. For example, the side of the outlet water body is provided with a mounting hole connected to the outlet water cavity, and the outlet water temperature sensor 30 can be sealed and inserted into the outlet water cavity through the mounting hole. Therefore, by providing the outlet water temperature sensor 30 in the outlet water cavity, the temperature in the outlet water cavity can be accurately obtained, so as to effectively control the heating temperature.

[0148] In an optional embodiment, the heating tube 21 includes a heating tube body and a heating element, wherein the heating element is disposed on the heating tube body and is configured to heat the heating tube body.

[0149] Among them, the heating tube 21 is a functional element that can heat the fluid. It can heat the fluid by electric heating methods such as thick film heating, quartz tube heating, nanofilm heating, cast aluminum heating, stainless steel wire heating, etc., or it can also heat the fluid by heat exchange methods such as steam heating and combustion heating.

[0150] In one embodiment, when electric heating is adopted, the heating tube body can be made of metal materials, such as stainless steel, cast aluminum, etc., and the outside of the heating tube body is provided with a thick film resistor heater, a nano electronic film heater or a stainless steel heater, etc. When it is necessary to heat the fluid in the heating tube body, these heaters can be powered on, and then these heaters can generate high temperature and heat up the heating tube body. When the fluid flows in the heating tube body, the fluid can be heated.

[0151] In one embodiment, when heat exchange heating is adopted, the heating tube body can be made of metal material, such as stainless steel, and a gas heating device is arranged outside the heating tube body. When it is necessary to heat the fluid in the heating tube body, gas can be supplied to the gas heating device, and the gas heating device can ignite the gas after obtaining the gas to make it burn, thereby heating the heating tube body to increase its temperature. When the fluid flows in the heating tube body, the fluid can also be heated.

[0152] In a specific embodiment, in order to meet general heat exchange requirements, the total length of the heating tube 21 is 85 mm, the inner diameter is 22 mm, and the outer diameter is 24 mm. The heating tube 21 is provided with a heating film or a heating wire to achieve heating of the internal fluid.

[0153] The connecting piece 222 has a diameter of 8 mm and is placed at the center of the heating tube 21. Four jet cavities 221 are arranged on the connecting piece 222. The length of each jet cavity 221 in the axial direction of the heating tube 21 is 15 mm. The spacing L between two adjacent jet cavities 221 is 4 mm. The total length of the jet range formed by the first jet cavity 221 to the fourth jet cavity 221 in the heating tube 21 is 72 mm.

[0154] The outer diameter of the jet cavity 221 is 20 mm, the number of circles of jet holes 22121 on each jet cavity 221 is four, the number of jet holes 22121 in each circle is 16, the diameter of the jet holes 22121 is 2 mm, and a total of 64 jet holes 22121 are evenly distributed on each jet cavity 221 .

[0155] The fluid to be heated is drinking water, with a flow rate of about 60 mL / s.

[0156] Under this design parameter, when the heating power density of the inner wall of the heating tube 21 is 150kW / m^2, the heat transfer coefficient of the heating component is 3361.6W / m2K, the Nusselt number is 117.4, and the pressure drop is 89.6Pa, which meets the heat transfer requirements of general heaters.

[0157] In addition, if Fig. 9 As shown, the water dispenser of the embodiment of the utility model comprises: a water dispenser body and a heater 2, wherein the heater 2 is installed in the water dispenser body.

[0158] Specifically, since the water dispenser includes the heater 2 as described above, and the specific structure of the heater 2 refers to the above embodiment, the water dispenser shown in this embodiment includes all the technical solutions of the above embodiment, and therefore has at least all the beneficial effects achieved by all the above technical solutions, which will not be repeated here one by one.

[0159] In an optional embodiment, the water dispenser further includes a heat storage device 1 .

[0160] Among them, the water inlet end of the heat storage device 1 is used to connect with the water supply system 5; the water inlet end of the heater 2 is connected with the water outlet end of the heat storage device 1, and the water outlet end of the heater 2 can be selectively connected with the heat storage device 1 and the water outlet 6; wherein, when the water outlet end of the heater 2 is connected with the heat storage device 1, the heat storage device 1 uses the hot water output by the heater 2 to store heat.

[0161] It is understandable that the water supply system 5 can adopt either a water tank or a water purification system, which can stably supply water to the water inlet end of the heat storage device 1.

[0162] The heat storage device 1 generally includes a heat exchange element and a heat storage material. A heat exchange channel is formed on the inner side of the heat exchange element. The heat storage material is in contact with the outer side of the heat exchange element. The heat storage material may be a solid-liquid phase change material, cast aluminum, water, etc. The water supply system 5 is connected to the heater 2 through the heat exchange channel.

[0163] The water outlet end of the heater 2 can be connected to the water inlet end of the heat exchange channel or the middle of the heat exchange channel, so as to supply the hot water output by the heater 2 to the heat exchange channel of the heat storage device 1, and then based on the heat exchange of the wall of the heat exchange channel, the thermal energy of the hot water is stored in the phase change material; the temperature of the phase change material rises after the charging is completed, and the temperature in the heat exchange channel can be maintained within a preset range for a certain period of time, thereby preheating the cold water passing through the heat exchange channel.

[0164] In practical applications, before the user takes water, or during the idle time when the user takes water (no water taking operation), the water outlet of the heater 2 can be connected to the heat storage device 1 to use hot water to store heat and charge the heat storage device 1.

[0165] The heater 2 may be an electric heater or a plate heat exchanger. The heater 2 is configured with a heating channel to heat water flowing through the heating channel. The heater 2 may adaptively adjust the heating power according to the outlet water temperature of the water outlet 6 .

[0166] As can be seen from the above, the water dispenser can utilize the hot water output by the heater 2 to store heat in the heat storage device 1 by configuring the heat storage device 1 and the heater 2, without the need to use other additional equipment to provide the heat energy required for the heat storage device 1 to store heat. This is not only low-cost, but also energy-saving and environmentally friendly. After the heat storage device 1 completes heat storage, the heat storage device 1 can be used to preheat the cold water supplied by the water supply system 5, and then the heater 2 can be used to heat the preheated water. This design is conducive to ensuring the water outlet temperature and flow rate of the water outlet 6. The water dispenser can instantly output a large flow of hot water from the water outlet 6, reducing the user's water connection time, thereby realizing a large flow of hot water supply in an energy-saving and efficient manner.

[0167] In some embodiments, Fig. 9As shown, the water dispenser further includes a valve control 3, and the valve control 3 has a first state and a second state;

[0168] When the valve control 3 is in the first state, the water outlet end of the heater 2 is connected to the water outlet 6 through the valve control 3; when the valve control 3 is in the second state, the water outlet end of the heater 2 is connected to the heat storage device 1 through the valve control 3 to form a circulating water circuit based on the heat storage device 1 and the heater 2.

[0169] It is understandable that the valve control unit 3 can be a two-position three-way electromagnetic reversing valve, and the water dispenser is equipped with an operation panel and a control module. The operation panel and the control module are electrically connected, and the control module and the valve control unit 3 are electrically connected.

[0170] The operation panel is used to receive a first operation instruction from the user, for example, the first operation instruction may be a water extraction instruction. The control module responds to the first operation instruction and controls the valve control 3 to be in the first state. At this time, the water dispenser operates in the water outlet mode, and the water supplied by the water supply system 5 passes through the heat storage device 1, the heater 2 and the valve control 3 in sequence, and then is output from the water outlet 6. Since the water has been preheated to a certain temperature before entering the heater 2, the difference between the inlet temperature of the heater 2 and the target temperature is reduced, so that the heater 2 can heat a larger flow of water to a high temperature.

[0171] At the same time, the operation panel is used to receive the user's second operation instruction, which may be a power-on instruction or a heat storage instruction. The control module responds to the second operation instruction and controls the valve control 3 to be in the second state. At this time, the water dispenser operates in the heat storage mode, and the heat storage device 1, the heater 2 and the valve control 3 are connected in sequence to form a circulating water circuit.

[0172] During the process of storing heat in the heat storage device 1, the heater 2 starts to run. When the hot water output by the heater 2 flows through the heat storage device 1, part of the heat of the hot water is transferred to the heat storage material in the heat storage device 1. After the water temperature drops, it flows into the heater 2 for heating, and this cycle is repeated until the water is heated to the target heating temperature.

[0173] The target heating temperature is greater than the phase change temperature of the heat storage material in the heat storage device 1 to ensure the effect of using hot water to store heat and charge the heat storage device 1 .

[0174] In some embodiments, Fig. 9 As shown, the water dispenser further comprises a pumping member 4 ; the pumping member 4 is arranged in the circulating water circuit and is used to drive the water to flow through the heat storage device 1 in a directional manner toward the heater 2 .

[0175] It can be understood that the pumping component 4 is a hot water pump, and the pumping component 4 has a flow control function to control the flow rate of the pumped water; when the water dispenser is in the water outlet mode, the pumping component 4 controls the flow rate of the pumped water, the heat storage device 1 ensures the preheating temperature of the water, and the heater 2 further controls the heating power of the water. These three cooperate with each other to ensure the flow rate and temperature of the water output from the water outlet 6.

[0176] At the same time, the pumping component 4 can be arranged on the pipeline between the water inlet end of the heat storage device 1 and the water outlet end of the heater 2. This design ensures that the pumping component 4 can take into account the pumping requirements of the water body of the water dispenser in the water outlet mode and the heat storage mode. Whether the water dispenser is in the water outlet mode or the heat storage mode, the water dispenser can work normally.

[0177] In some embodiments, the water dispenser further includes a first trigger, which is connected to the valve control 3; the first trigger is used to receive a water extraction instruction signal, and the valve control 3 is used to switch to the first state according to the signal fed back by the first trigger.

[0178] It is understandable that the first trigger component is electrically connected to the control module, and the control module is electrically connected to the valve control unit 3. The control module controls the working state of the valve control unit 3 according to the trigger instruction fed back by the first trigger component, so that the water dispenser enters the water outlet mode.

[0179] Optionally, the first trigger member may be a water intake button, which may be disposed on an operation panel and used for receiving a pressing instruction from a user.

[0180] Optionally, the first trigger member may be a trigger switch, which is disposed on a water intake valve located at the water outlet 6 and is triggered when a user opens the water intake valve.

[0181] In some embodiments, the water dispenser also includes a second trigger, which is connected to the valve control 3; the second trigger is used to receive a power-on command signal or a heat storage command signal, and the valve control 3 is used to switch to the second state according to the signal feedback from the second trigger.

[0182] It is understandable that the second trigger component is electrically connected to the control module, and the control module is electrically connected to the valve control unit 3. The control module controls the working state of the valve control unit 3 according to the trigger instruction fed back by the second trigger component, so that the water dispenser enters the heat storage mode.

[0183] Optionally, the second trigger may be a power switch, which may be disposed on an operating panel. When the user presses the power switch to power on the water dispenser, the control module may respond to a power-on command signal fed back from the power switch to control the water dispenser to enter a heat storage mode.

[0184] Optionally, the second trigger may be a heat storage button, which may be disposed on the operating panel. When the user presses the heat storage button, the control module may respond to a heat storage command signal fed back from the heat storage button to control the water dispenser to enter the heat storage mode.

[0185] 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 (2), characterized in that: include: A heating pipe (21) having a water inlet end and a water outlet end opposite to each other; A jet component (22) is arranged in the heating tube (21), the jet component (22) comprising a jet chamber (221), the jet chamber (221) being provided with a water inlet and a jet hole (22121), the water inlet facing the water inlet end, the jet hole (22121) being arranged on a side wall (2212) of the jet chamber (221), a water gap (d) being formed between the side wall (2212) and the inner wall of the heating tube (21); wherein the coverage rate of the jet chamber (221) and the heating area of ​​the heating tube (21) along the axial direction of the heating tube (21) is in the range of greater than or equal to 85% to 95%.

2. The heater (2) according to claim 1, characterized in that The jet assembly (22) further comprises a connecting piece (222), wherein a plurality of the jet chambers (221) are sequentially spaced apart on the connecting piece (222) along the length direction of the heating tube (21), and a sum of the dimensions of the plurality of the jet chambers (221) along the length direction of the heating tube (21) is greater than or equal to 90% of a dimension of the connecting piece (222) along the length direction of the heating tube (21).

3. The heater (2) according to claim 1, characterized in that The plurality of jet cavities (221) are arranged in sequence and spaced apart along the length direction of the heating tube (21), and there is a spacing (L) between two adjacent jet cavities, and the range of the spacing (L) is greater than or equal to 2 mm and less than or equal to 12 mm.

4. The heater (2) according to claim 3, characterized in that At least some of the multiple intervals (L) formed by the multiple jet chambers (221) are different.

5. The heater (2) according to claim 3, characterized in that The multiple intervals (L) formed by the multiple jet cavities (221) gradually decrease along the length direction of the heating tube (21).

6. The heater (2) according to claim 5, characterized in that The difference between two adjacent spacings (L) is a constant value.

7. The heater (2) according to claim 3, characterized in that The plurality of jet cavities (221) form a plurality of the spacings (L), and along the flow direction of the fluid, the plurality of spacings (L) are sequentially divided into at least two intervals, each interval including at least one spacing (L), the spacings (L) in the same interval are the same, and the spacing (L) in the previous interval is greater than the spacing (L) in the next interval.

8. The heater (2) according to claim 1, characterized in that The heating tube (21) comprises a heating tube body and a heating element, wherein the heating element is arranged on the heating tube body and is configured to heat the heating tube body.

9. The heater (2) according to claim 8, characterized in that The heating element includes one of the following: a thick film resistor heater, a nano-electronic film heater, a stainless steel heater, and a gas heating device.

10. The heater (2) according to any one of claims 1 to 9, characterized in that It also comprises a water inlet pipe joint (23) and a water outlet pipe joint (24), wherein the water inlet pipe joint (23) is arranged at the water inlet end, and the water outlet pipe joint (24) is arranged at the water outlet end.

11. The heater (2) according to claim 10, characterized in that It also includes a first sealing member (26), wherein the water inlet pipe joint (23) is sealedly connected to the water inlet end via the first sealing member (26); and / or, A second sealing member (29), wherein the water outlet pipe joint (24) is sealedly connected to the water outlet end via the second sealing member (29).

12. A water dispenser, characterized in that: include: Water dispenser body; The heater (2) according to any one of claims 1 to 11, wherein the heater (2) is installed in the water dispenser body.

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