Heating device and water dispenser comprising same

Abstract

The utility model provides a heating device and a water dispenser comprising the same, and belongs to the technical field of household kitchen ware. The heating device is applied to the water dispenser, the heating device comprises a shell and a heating part, and a heating cavity used for containing liquid to be heated is formed in the shell; the heating part is arranged in the heating cavity; the heating device further comprises a stirring part, the stirring part is rotatably arranged in the heating cavity, and the stirring part is used for guiding the to-be-heated liquid from the position close to the inner side wall of the shell to the position away from the inner side wall of the shell in the rotating process. The rotatable stirring part is arranged in the heating cavity, so that the to-be-heated liquid can be stirred by the stirring part in the heating process, and the to-be-heated liquid can be guided from the position close to the inner side wall of the shell to the position away from the inner side wall of the shell in the rotating process of the stirring part; therefore, the to-be-heated liquid in the heating cavity can be fully mixed, heat convection among the to-be-heated liquid is enhanced, the heating efficiency of the heating device is improved, and the heating time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of household kitchenware, in particular to a heating device and a water dispenser comprising the same. Background Art

[0002] At present, the heating part in a water dispenser or a water purifier is often fixedly connected to the heating chamber in the heating device. The heat gradually dissipates to the surrounding liquid to be heated with the heating part as the center. The liquid to be heated in the heating chamber is basically static during the heating process, so that the heat is mainly transferred through heat conduction, and the heat transfer method in the form of heat convection accounts for a relatively low proportion, resulting in a low heating rate of the heating device and a long heating time of the liquid to be heated. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the heating device in the prior art water dispenser or water purifier having a low heating rate and a long heating time for the heated liquid, and to provide a heating device and a water dispenser containing the same.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A heating device is applied to a water dispenser, the heating device comprising a shell and a heating part, the shell forming a heating chamber for accommodating liquid to be heated; the heating part is arranged in the heating chamber; the heating device also comprises a stirring part, the stirring part is rotatably arranged in the heating chamber, the stirring part is used to guide the liquid to be heated from a position close to the inner side wall of the shell to a position away from the inner side wall of the shell during rotation.

[0006] In the present scheme, a rotatable stirring portion is provided in the heating chamber so that the liquid to be heated can be stirred by the stirring portion during the heating process. Moreover, since the stirring portion can guide the liquid to be heated from a position close to the inner wall of the shell to a position away from the inner wall of the shell during the rotation process, the liquid to be heated in the heating chamber can be fully mixed, thereby enhancing heat convection between the liquids to be heated, improving the heating efficiency of the heating device, and shortening the heating time.

[0007] Preferably, the stirring portion is provided with a guide surface, and the projection of the guide surface is arc-shaped in the extension direction of the rotation axis of the stirring portion; in a horizontal plane perpendicular to the extension direction of the rotation axis of the stirring portion, the center of the guide surface is located in front of the stirring portion in the rotation direction, and the center of the guide surface and the rotation axis of the stirring portion are located on the same side of the line between the two ends of the guide surface.

[0008] In this solution, through the above-mentioned structural form, during the rotation of the stirring part, the guide surface can guide the liquid to be heated from a position away from the rotation axis of the stirring part to a position close to the rotation axis of the stirring part, thereby promoting the convection of the liquid to be heated near the rotation axis of the stirring part. Since the stirring part is arranged in the heating chamber, the rotation axis of the stirring part is always at a certain distance from the inner side wall of the shell, so that the stirring part can guide the liquid to be heated from a position close to the inner side wall of the shell to a position away from the inner side wall of the shell during the rotation process.

[0009] Preferably, the stirring portion comprises at least one blade; along the rotation direction of the stirring portion, the guide surface is provided on the front side surface of the blade.

[0010] In the present embodiment, the blades provided with the guide surface as described above can guide the liquid to be heated from a position close to the inner wall of the shell to a position away from the inner wall of the shell; when the number of blades is multiple, the guiding effect of the liquid to be heated is better, which is more conducive to enhancing the stirring convection of the liquid to be heated.

[0011] Preferably, the stirring part also includes a main shaft and a support shaft; one end of the main shaft is rotatably connected to the first inner wall of the shell, the other end of the main shaft is connected to the support shaft, and the extension direction of the main shaft and the extension direction of the support shaft have an angle; the end of the support shaft away from the main shaft is connected to the blade.

[0012] In this solution, the blade is connected to the housing through the support shaft and the main shaft, and the rotation of the main shaft drives the support shaft to rotate, thereby rotating the blade. The extension direction of the main shaft and the extension direction of the support shaft have an included angle. When there are multiple blades, since the support shaft can extend in different directions from the main shaft, multiple support shafts connecting multiple blades will not interfere with each other, ensuring the installation and operation space of multiple blades.

[0013] Preferably, the stirring portion is arranged around the circumference of the heating portion, and the stirring portion and the heating portion are spaced apart by a predetermined distance; and / or the heating portion is arranged on the inner wall of the shell.

[0014] In this solution, since the stirring part is used to guide the liquid to be heated from a position close to the inner side wall of the shell to a position away from the inner side wall of the shell during rotation, the stirring part is arranged around the circumference of the heating part, and the stirring part and the heating part are separated by a predetermined distance, so that the stirring part guides the liquid to be heated to a position close to the heating part, so as to enhance the contact between the liquid to be heated and the heating part, and improve heat conduction and heat convection. In addition, the heating part can also be arranged on the inner side wall of the shell. Since the stirring part guides the liquid to be heated away from the inner side wall of the shell, the liquid to be heated in other areas must flow to the inner side wall of the shell, which can also enhance the contact between the liquid to be heated and the heating part.

[0015] Preferably, in a direction perpendicular to an extending direction of a rotation axis of the stirring portion, a projection of the stirring portion at least partially covers the heating portion.

[0016] In this solution, through the above-mentioned structural form, the heating part is placed as much as possible in the area of ​​the liquid to be heated that is guided by the stirring part during the rotation process, further increasing the contact between the flowing liquid to be heated and the heating part, thereby improving the heating efficiency.

[0017] Preferably, there is a gap between the stirring portion and any inner side wall of the shell.

[0018] In the present solution, through the above-mentioned structural form, on the one hand, the rotation of the stirring part will not be blocked by the inner wall of the shell; on the other hand, a gap is left between the stirring part and the inner wall of the shell in the extension direction of the rotating axis of the stirring part, so that the liquid to be heated can also form a circulation flowing around the stirring part in the extension direction of the rotating axis of the stirring part, so as to increase the fluid path of the liquid to be heated and enhance the thermal convection of the liquid to be heated.

[0019] Preferably, along the rotation direction of the stirring portion, a plurality of protrusions are arranged on the inner side wall of the shell, and the plurality of protrusions are arranged around the stirring portion.

[0020] In the present embodiment, a protrusion is arranged on the inner wall of the shell, so that the liquid to be heated will be interfered by the protrusion when flowing through the inner wall of the shell, thereby changing the flow direction to be away from the inner wall of the shell; and the protrusion is arranged around the stirring part, that is, the protrusion guides the liquid to be heated to the stirring part, and the stirring part further guides the liquid to be heated to a position away from the inner wall of the shell. Therefore, the protrusion cooperates with the stirring part to make the stirring of the liquid to be heated more sufficient, promote the temperature of the liquid to be heated in various areas of the heating chamber to be consistent, and further shorten the heating time.

[0021] Preferably, the heating portion is a resistance wire; and / or the heating portion has a plurality of bends.

[0022] In this solution, the resistance wire is economical and easy to obtain, and its structure has strong plasticity; providing the heating part (resistance wire) with multiple bends can increase the contact area with the liquid to be heated, further enhancing the heating efficiency.

[0023] A water dispenser comprises the heating device as described above.

[0024] The positive and progressive effects of the utility model are:

[0025] In the utility model, a rotatable stirring portion is provided in the heating chamber, so that the liquid to be heated can be stirred by the stirring portion during the heating process, and because the stirring portion can guide the liquid to be heated from a position close to the inner wall of the shell to a position away from the inner wall of the shell during the rotation process, the liquid to be heated in the heating chamber can be fully mixed, thereby enhancing heat convection between the liquids to be heated, improving the heating efficiency of the heating device, and shortening the heating time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional structural schematic diagram of a heating device according to a preferred embodiment of the utility model, wherein the internal structure of the shell of the heating device is shown.

[0027] Figure 2 This is a schematic cross-sectional structural diagram of a heating device according to a preferred embodiment of the present utility model (I).

[0028] Figure 3 This is a schematic diagram of the cross-sectional structure of the heating device of a preferred embodiment of the utility model (II).

[0029] Description of reference numerals:

[0030] Housing 100

[0031] The first inner wall 110

[0032] The second inner wall 120

[0033] Raised 130

[0034] Heating chamber 140

[0035] Heating unit 200

[0036] Stirring unit 300

[0037] Blade 310

[0038] Guide surface 311

[0039] Spindle 400

[0040] Support shaft 410

[0041] Center A of the guide surface

[0042] The line L between the two ends of the guide surface

[0043] The rotation axis B of the stirring part

[0044] Rotation direction of stirring part T DETAILED DESCRIPTION

[0045] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0046] This embodiment provides a water dispenser, which includes a heating device.

[0047] like Figure 1-Figure 3 As shown, the heating device is applied to a water dispenser, and the heating device includes a shell 100 and a heating part 200. A heating chamber 140 for accommodating liquid to be heated is formed in the shell 100; the heating part 200 is arranged in the heating chamber 140; the heating device also includes a stirring part 300, which is rotatably arranged in the heating chamber 140, and the stirring part 300 is used to guide the liquid to be heated from a position close to the inner wall of the shell 100 to a position away from the inner wall of the shell 100 during rotation.

[0048] By arranging a rotatable stirring portion 300 in the heating chamber 140, the liquid to be heated can be stirred by the stirring portion 300 during the heating process, and since the stirring portion 300 can guide the liquid to be heated from a position close to the inner wall of the shell 100 to a position away from the inner wall of the shell 100 during the rotation process, the liquid to be heated in the heating chamber 140 can be fully mixed, thereby enhancing heat convection between the liquids to be heated, improving the heating efficiency of the heating device, and shortening the heating time.

[0049] Specifically, the stirring portion 300 includes at least one blade 310 ; along the rotation direction of the stirring portion 300 , a guide surface 311 is provided on the front side of the blade 310 .

[0050] like Figure 3 As shown, in the extension direction of the rotation axis of the stirring portion 300, the projection of the guide surface 311 is arc-shaped; in a horizontal plane perpendicular to the extension direction of the rotation axis of the stirring portion 300, the center A of the guide surface 311 is located in front of the stirring portion 300 in the rotation direction T, and the center A of the guide surface 311 and the rotation axis B of the stirring portion 300 are located on the same side of the line L between the two ends of the guide surface 311.

[0051] Thus, during the rotation of the stirring portion 300, the guide surface 311 can guide the liquid to be heated from a position away from the rotation axis of the stirring portion 300 to a position close to the rotation axis of the stirring portion 300, thereby promoting convection of the liquid to be heated near the rotation axis of the stirring portion 300. Since the stirring portion 300 is disposed in the heating chamber 140, the rotation axis of the stirring portion 300 is always at a certain distance from the inner side wall of the shell 100, so that the stirring portion 300 can guide the liquid to be heated from a position close to the inner side wall of the shell 100 to a position away from the inner side wall of the shell 100 during the rotation process.

[0052] In this embodiment, the stirring part 300 includes two blades 310, and the two blades 310 are arranged opposite to each other. In other optional embodiments, the number of the blades 310 can be set to one, or three or more.

[0053] In addition, in other optional implementations, the stirring portion 300 may also be configured to be spoon-shaped or hemispherical, thereby forming a specific structure different from the blade 310 of the present embodiment and a guide surface 311 of a different shape.

[0054] Specifically, the stirring part 300 also includes a main shaft 400 and a support shaft 410; one end of the main shaft 400 is rotatably connected to the first inner wall 110 of the shell 100, and the other end of the main shaft 400 is connected to the support shaft 410, and the extension direction of the main shaft 400 and the extension direction of the support shaft 410 have an angle; the end of the support shaft 410 away from the main shaft 400 is connected to the blade 310.

[0055] Thus, the blade 310 is connected to the housing 100 through the support shaft 410 and the main shaft 400, and the rotation of the main shaft 400 drives the support shaft 410 to rotate, thereby rotating the blade 310. The extension direction of the main shaft 400 and the extension direction of the support shaft 410 have an included angle. When there are multiple blades 310, since the support shaft 410 can extend in different directions from the main shaft 400, multiple support shafts 410 connected to multiple blades 310 will not interfere with each other, thereby ensuring the installation and operation space of multiple blades 310.

[0056] like Figure 2 As shown, in this embodiment, the main shaft 400 is vertically connected to the first inner side wall 110, and the extension direction of the two support shafts 410 is perpendicular to the main shaft 400 and extends toward each other, so that a predetermined distance is spaced between the two blades 310. In other optional embodiments, the support shaft 410 can also be at an angle other than 90 degrees to the main shaft 400, so that after the end of the support shaft 410 is connected to the blade 310, (if multiple blades 310 are provided) the multiple blades 310 do not interfere with each other.

[0057] Of course, the rotation of the main shaft 400 can be achieved by an external motor or other driving device, which belongs to the prior art and will not be described in detail.

[0058] Furthermore, if Figure 1 and Figure 3 As shown, in this embodiment, the stirring portion 300 is disposed around the heating portion 200 , and the stirring portion 300 is spaced a predetermined distance from the heating portion 200 .

[0059] Since the stirring portion 300 guides the liquid to be heated from a position close to the inner wall of the shell 100 to a position away from the inner wall of the shell 100 during the rotation process, the stirring portion 300 is arranged around the heating portion 200, and the stirring portion 300 is spaced a predetermined distance from the heating portion 200, so that the stirring portion 300 guides the liquid to be heated to a position close to the heating portion 200, so as to enhance the contact between the liquid to be heated and the heating portion 200, thereby improving heat conduction and heat convection.

[0060] In other optional embodiments, the heating part 200 can also be arranged on the inner wall of the shell 100. Since the stirring part 300 guides the liquid to be heated away from the inner wall of the shell 100, the liquid to be heated in other areas will inevitably flow to the inner wall of the shell 100, which can also enhance the contact between the liquid to be heated and the heating part 200. Of course, the heating part 200 can also be divided into two parts, one part is surrounded by the stirring part 300, and the other part is arranged on the inner wall of the shell 100.

[0061] Specifically, in this embodiment, the shell 100 is cylindrical, the heating part 200 is arranged in the middle position along the radial direction of the shell 100, and in order to avoid interference with the main shaft 400, the heating part 200 is connected to the second inner wall 120 opposite to the first inner wall 110 (when the shell 100 is cylindrical, the first inner wall 110 and the second inner wall 120 are the two end walls in the axial direction of the shell 100), and the two blades 310 of the stirring part 300 are arranged around the heating part 200, and rotate along the circumferential direction of the shell 100 with the heating part 200 as the rotation axis. Since the guide surface 311 as described above is provided on the blade 310, the blade 310 can guide the liquid to be heated to the area near the heating part 200.

[0062] In other optional embodiments, the housing 100 may also be arranged in a cubic shape; the heating portion 200 may also be arranged away from the middle position of the housing 100 in the radial direction according to actual needs; the stirring portion 300 is arranged around the heating portion 200, but the rotation axis of the stirring portion 300 may not coincide with the heating portion 200. In addition, for the sake of convenience in manufacturing, the rotation axis of the stirring portion 300 in this embodiment is parallel to the axial direction of the housing 100, but it can be understood that the rotation axis of the stirring portion 300 can be in any direction within the heating chamber 140.

[0063] Furthermore, in a direction perpendicular to the extension direction of the rotation axis of the stirring portion 300, the projection of the stirring portion 300 at least partially covers the heating portion 200. In this way, the heating portion 200 is as close as possible to the region of the liquid to be heated that is guided to flow during the rotation of the stirring portion 300, further increasing the contact between the liquid to be heated and the heating portion 200, thereby improving the heating efficiency.

[0064] Specifically, Figure 2 As shown, the heating portion 200 extends from the second inner sidewall 120 toward the first inner sidewall 110, and the blade 310 extends from a position close to the first inner sidewall 110 toward the second inner sidewall 120. In this embodiment, the projection of the blade 310 partially covers the heating portion 200. In other optional embodiments, the projection of the stirring portion 300 can also be set to completely cover the heating portion 200.

[0065] Of course, both the heating part 200 and the blade 310 need to have sufficient extension lengths. If the extension length of the heating part 200 is too short, the contact area with the liquid to be heated will be affected, and if the extension length of the blade 310 is too short, the stirring and diversion effects will be affected. The specific extension lengths of the heating part 200 and the blade 310 can be set according to actual conditions.

[0066] Furthermore, a gap is formed between the stirring portion 300 and any inner wall of the housing 100 .

[0067] Therefore, on the one hand, the rotation of the stirring portion 300 will not be blocked by the inner wall of the shell 100; on the other hand, a gap is left between the stirring portion 300 and the inner wall of the shell 100 in the extension direction of the rotation axis of the stirring portion 300, so that the liquid to be heated can also form a circulation flowing around the stirring portion 300 in the extension direction of the rotation axis of the stirring portion 300, so as to increase the fluid path of the liquid to be heated and enhance the thermal convection of the liquid to be heated.

[0068] Specifically, in this embodiment, a gap is formed between the blade 310 and the inner wall of the shell 100 to ensure the normal rotation of the blade 310; the blade 310 also has a gap with the first inner wall 110 and the second inner wall 120, so that when the liquid to be heated is guided by the guide surface 311 to flow toward the heating part 200, it can also pass through the gap between the blade 310 and the first inner wall 110, and the gap between the blade 310 and the second inner wall 120, and flow around the blade 310 along the axial direction of the shell 100.

[0069] Furthermore, along the rotation direction of the stirring portion 300 , a plurality of protrusions 130 are disposed on the inner side wall of the housing 100 , and the plurality of protrusions 130 are disposed around the stirring portion 300 .

[0070] A protrusion 130 is provided on the inner wall of the shell 100, so that the liquid to be heated will be interfered by the protrusion 130 when flowing through the inner wall of the shell 100, thereby changing the flow direction to be away from the inner wall of the shell 100; and the protrusion 130 is arranged around the stirring part 300, that is, the protrusion 130 guides the liquid to be heated to the stirring part 300, and the stirring part 300 further guides the liquid to be heated to a position away from the inner wall of the shell 100. Therefore, the protrusion 130 cooperates with the stirring part 300 to make the stirring of the liquid to be heated more sufficient, promote the temperature of the liquid to be heated in each area of ​​the heating chamber 140 to be consistent, and further shorten the heating time.

[0071] like Figure 1 and Figure 3As shown, in this embodiment, since the blade 310 rotates along the circumferential direction of the housing 100, a plurality of protrusions 130 are arranged on the inner circumferential wall of the housing 100 and are evenly spaced. As a result, the liquid to be heated near the inner circumferential wall of the housing 100 is guided away from the inner circumferential wall of the housing 100 by the protrusions 130, and the blade 310 guides the liquid to be heated to the area close to the heating part 200. In the radial cross section of the housing 100, the liquid to be heated flows in a trend toward the center.

[0072] Of course, in order to ensure the flow guiding effect of the protrusion 130 , the extension length of the protrusion 130 or the projection area of ​​the protrusion 130 on the stirring portion 300 (the blade 310 ) should be close to the stirring portion 300 .

[0073] In addition, in order to enhance the cooperation effect between the blade 310 and the protrusion 130 in the present embodiment, in the radial direction of the housing 100, the end of the blade 310 away from the rotation axis is as close to the protrusion 130 as possible without contacting the protrusion 130. Further, the blade 310 in the present embodiment is in an arc shape, and during the rotation process of the blade 310, when the end of the blade 310 away from the rotation axis passes over the top of the protrusion 130, the blade 310 is tangent to the protrusion 130, so that the blade 310 guides the liquid to be heated vertically to the protrusion 130, thereby maximally enhancing the blocking effect of the protrusion 130 on the liquid to be heated, enhancing the disturbance of the liquid to be heated, and strengthening the heat convection.

[0074] Specifically, in this embodiment, the heating part 200 is a resistance wire, and the heating part 200 has a plurality of bends. Resistance wire is economical and easy to obtain, and has strong structural plasticity; setting a plurality of bends on the heating part 200 can increase the contact area with the liquid to be heated, and further enhance the heating efficiency. In other optional embodiments, other existing heaters can also be selected as the heating part 200, and it is also possible to set a plurality of bends on the heater if the heater structure allows.

[0075] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A heating device, applied to a water dispenser, comprising a housing and a heating portion, wherein a heating chamber for accommodating a liquid to be heated is formed in the housing; characterized in that: The heating part is arranged in the heating chamber; The heating device further comprises a stirring portion, which is rotatably disposed in the heating chamber and is used to guide the liquid to be heated from a position close to the inner side wall of the shell to a position away from the inner side wall of the shell during rotation.

2. The heating device according to claim 1, characterized in that The stirring portion is provided with a guide surface, and in the extension direction of the rotation axis of the stirring portion, the projection of the guide surface is in an arc shape; In a horizontal plane perpendicular to the extension direction of the rotation axis of the stirring part, the center of the guide surface is located in front of the stirring part in the rotation direction, and the center of the guide surface and the rotation axis of the stirring part are located on the same side of the line between the two ends of the guide surface.

3. The heating device according to claim 2, characterized in that The stirring portion includes at least one blade; The guide surface is provided on the front side of the blade along the rotation direction of the stirring part.

4. The heating device according to claim 3, characterized in that The stirring part also includes a main shaft and a support shaft; One end of the main shaft is rotatably connected to the first inner side wall of the housing, the other end of the main shaft is connected to the support shaft, and the extension direction of the main shaft and the extension direction of the support shaft form an included angle; One end of the support shaft away from the main shaft is connected to the blade.

5. The heating device according to claim 1, characterized in that The stirring part is arranged around the circumference of the heating part, and the stirring part is spaced a predetermined distance from the heating part; And / or, the heating unit is arranged on the inner wall of the shell.

6. The heating device according to claim 1, characterized in that In a direction perpendicular to an extending direction of a rotation axis of the stirring portion, a projection of the stirring portion at least partially covers the heating portion.

7. The heating device according to claim 1, characterized in that The stirring portion has a gap with any inner side wall of the housing.

8. The heating device according to claim 1, characterized in that Along the rotation direction of the stirring part, a plurality of protrusions are arranged on the inner side wall of the shell, and the plurality of protrusions are arranged around the stirring part.

9. The heating device according to claim 1, characterized in that: The heating part is a resistance wire; and / or the heating part has a plurality of bends.

10. A water dispenser, characterized in that: It comprises the heating device as claimed in any one of claims 1-9.

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