Heating device and pump with same

Abstract

The heating device comprises a heating pipe and a heating disc, the heating disc is provided with a groove part, the groove part is provided with a groove, part of the heating pipe is contained in the groove, the heating pipe comprises a shell and a heating wire, the heating wire is located in the shell, the heating wire comprises a first heating part and a second heating part, and the first heating part and the second heating part are arranged in the shell. In the height direction of the heating disc, the first heating part and the second heating part are stacked; or in the radial direction of the heating disc, the first heating part and the second heating part are nested. According to the heating device, the heating pipe comprises the shell and the heating wire, the heating wire is located in the shell and comprises the first heating part and the second heating part, and the first heating part and the second heating part are arranged in a stacked mode in the height direction of the heating disc; or in the radial direction of the heating disc, the first heating part and the second heating part are nested, and the first heating part and the second heating part are located in the same shell, so that hot corrosion is reduced.

Description

Technical Field

[0001] The utility model relates to the field of household appliances, in particular to a heating device and a pump having the same. Background Art

[0002] As people's living standards improve, more and more families choose to use dishwashers to replace the tedious chores of washing dishes manually. Among the various components of dishwashers, the heating device is the core component, and its performance and energy efficiency level have always been the key improvement indicators of various dishwasher manufacturers.

[0003] An existing dishwasher includes a heating pump, which includes a heating device, a housing assembly and a power assembly. The housing assembly includes a pump housing, and the heating device is located outside the pump housing.

[0004] refer to Figure 5 The heating device includes a metal plate and a heating tube. The heating tube is bent to form a first heating part 11' and a second heating part 12' which are stacked. The metal plate includes an annular groove. Part of the first heating part 11' is accommodated in the groove. Part of the second heating part 12' is located in the groove. There is a gap between the outer shell of the first heating part 11' and the outer shell of the second heating part 12' that are opposite to each other. After the heating device is powered on, part of the heat generated by the first heating part 11' and the second heating part 12' accumulates in the gap between the first heating part 11' and the second heating part 12', and the outer shell of the first heating part and the outer shell of the second heating part that are opposite to each other form thermal corrosion. Utility Model Content

[0005] In order to solve the above problems, the following technical solutions are provided: a heating device, comprising a heating tube and a heating plate, the heating plate having a groove portion, the groove portion having a groove, part of the heating tube being accommodated in the groove, the heating tube comprising a shell and a heating wire, the heating wire being located in the shell, the heating wire comprising a first heating portion and a second heating portion, in the height direction of the heating plate, the first heating portion and the second heating portion are stacked; or in the radial direction of the heating plate, the first heating portion and the second heating portion are nested.

[0006] In such a heating device, the heating tube includes a shell and a heating wire, the heating wire is located in the shell, the heating wire includes a first heating part and a second heating part, in the height direction of the heating disk, the first heating part and the second heating part are stacked; or in the radial direction of the heating disk, the first heating part and the second heating part are nested, and the first heating part and the second heating part are located in the same shell, thereby reducing the occurrence of thermal corrosion.

[0007] The utility model also provides a pump, comprising the above-mentioned heating device, the pump also comprising a motor assembly and a pump housing, the motor assembly having a fixing portion, the fixing portion being limit-connected to one end of the pump housing, and the heating plate being limit-connected to the other end of the pump housing.

[0008] The pump includes the above-mentioned heating device, the heating device includes a heating tube, the heating tube includes a shell and a heating wire, the heating wire is located in the shell, the heating wire includes a first heating part and a second heating part, in the height direction of the heating disk, the first heating part and the second heating part are stacked; or in the radial direction of the heating disk, the first heating part and the second heating part are nested, and the first heating part and the second heating part are located in the same shell to reduce the occurrence of thermal corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional diagram of an embodiment of the heating device in the utility model;

[0010] Figure 2 It is a three-dimensional diagram of a heating tube of one embodiment of the heating device of the utility model;

[0011] Figure 3 It is a partial structural schematic diagram of a heating tube of one embodiment of the heating device in the utility model;

[0012] Figure 4 It is a partial structural schematic diagram of a heating tube of another embodiment of the heating device in the utility model;

[0013] Figure 5 It is a structural schematic diagram of the background technology in the utility model.

[0014] Reference numerals:

[0015] Heating tube 1, shell 11, heating wire 12, first heating part 121, second heating part 122, first connecting part 123, first terminal 124, second terminal 125, first lead rod 13, second lead rod 14, insulating member 15, first body 151, first protrusion 152,

[0016] Heating plate 2, groove portion 21, flange 22,

[0017] First safety element 3 , second safety element 4 , first terminal 5 , second terminal 6 , thermal bridge 7 , screw 8 . DETAILED DESCRIPTION

[0018] The technical solution of the specific implementation method is described below in conjunction with the accompanying drawings.

[0019] It should be noted that: although this specification has described the utility model in detail with reference to the above-mentioned implementation modes, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify, combine or replace the utility model with equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the utility model should be included in the scope of the claims of the utility model.

[0020] refer to Figure 1-Figure 4 A heating device includes a heating tube 11 and a heating plate 2, the heating plate 2 has a groove portion 2121, the groove portion 2121 has a groove, part of the heating tube 11 is accommodated in the groove, the heating tube 1 includes a shell 11 and a heating wire 12, the heating wire 12 is located in the shell 11, the heating wire 12 includes a first heating portion 121 and a second heating portion 122, in the height direction of the heating plate 2, the first heating portion 121 and the second heating portion 122 are stacked; or in the radial direction of the heating plate 2, the first heating portion 121 and the second heating portion 122 are nested.

[0021] In such a heating device, the heating tube 1 includes a shell 11 and a heating wire 12, the heating wire 12 is located in the shell 11, the heating wire 12 includes a first heating part 121 and a second heating part 122, in the height direction of the heating disk 2, the first heating part 121 and the second heating part 122 are stacked; or in the radial direction of the heating disk 2, the first heating part 121 and the second heating part 122 are nested, the first heating part 121 and the second heating part 122 are located in the same shell 11, so as to reduce the occurrence of thermal corrosion.

[0022] refer to Figure 1 The height direction of the heating device refers to that the heating plate 2 has a flange 22, and the flange 22 is a circular ring. The height direction is the axial direction of the flange 22. In the height direction of the heating plate 2, the first heating part 121 and the second heating part 122 are stacked to reduce the radial dimension of the heating tube 11, thereby miniaturizing the pump.

[0023] The first heating part 121 and the second heating part 122 are stacked, and there is a preset distance between the first heating part 121 and the second heating part 122. The distance can be set according to specific needs and will not be elaborated here.

[0024] The first heating part 121 and the second heating part 122 are nested, and there is a preset distance between the first heating part 121 and the second heating part 122. The distance can be set according to specific needs and will not be elaborated here.

[0025] refer to Figure 1-Figure 3The first heating part 121 is spiral-shaped, and the second heating part 122 is spiral-shaped. It is defined that the plane perpendicular to the height direction of the heating plate 2 is the first plane, and the projection of the center line of the first heating part 121 on the first plane coincides with the projection of the center line of the second heating part 122 on the first plane.

[0026] The center line of the first heating part 121 means that the heating wire 12 can be straight in the initial state. The straight heating wire 12 has a center line. After the heating wire 12 is installed in the shell 11, the shell 11 is bent, and the heating wire 12 is bent synchronously. The part after the center line of the straight heating wire 12 is bent to the same degree is defined as the center line of the first heating part 121. The center line of the second heating part 122 is the same as above and will not be repeated here.

[0027] refer to Figure 3 The heating wire 12 includes a first connection portion 123, which is roughly U-shaped. The first heating portion 121 extends from one end of the first connection portion 123, and the second heating portion 122 extends from the other end of the first connection portion 123. The straight heating wire 12 is bent to form the first connection portion 123.

[0028] refer to Figure 3 The heating wire 12 has a first terminal 124, which extends from the end of the first heating portion 121 away from the first connecting portion 123. The first terminal 124 is tilted relative to the first heating portion 121. The heating tube 1 includes a first lead rod 13, and the first terminal 124 is sleeved on the first lead rod 13. Part of the first lead rod 13 is located in the shell 11.

[0029] refer to Figure 3 The heating wire 12 has a second terminal 125, which extends from the end of the second heating portion 122 away from the first connecting portion 123. The second terminal 125 is tilted relative to the second heating portion 122. The heating tube 1 includes a second lead rod 14, and the second terminal 125 is sleeved on the second lead rod 14. Part of the second lead rod 14 is located in the shell 11.

[0030] refer to Figure 2 and Figure 3 The heating tube 1 includes an insulating member 15, part of which is located in the shell 11, the first lead rod 13 passes through the insulating member 15, the second lead rod 14 passes through the insulating member 15, and the end of the heating tube 1 away from the insulating member 15 is located in the groove, which reduces the number of parts, simplifies the assembly steps, and reduces costs.

[0031] refer to Figure 3The insulating member 15 includes a first body 151 and a first protrusion 152, the first protrusion 152 protrudes from the upper surface of the first body 151, a portion of the first lead rod 13 is located on a side of the first body 151 away from the first protrusion 152, a portion of the first lead rod 13 is located on a side of the first protrusion 152 away from the first body 151, a portion of the second lead rod 14 is located on a side of the first body 151 away from the first protrusion 152, and a portion of the second lead rod 14 is located on a side of the first protrusion 152 away from the first body 151.

[0032] refer to Figure 2 The shell 11 has a first bending portion, which abuts against the upper surface of the first body 151, such as a shrink tube, and the side of the first body 151 away from the first protrusion 152 is filled with magnesium powder, thereby limiting the first insulating member 15.

[0033] refer to Figure 1 The heating device includes a first safety element 3 (for example, a safety device), a second safety element 4 (for example, a temperature control device), a thermal bridge 77 and a screw 88. The thermal bridge 7 is fixed to the heating plate 2 and / or the heating tube 1. The thermal bridge 77 is welded to the heating plate 2 and / or the heating tube 1. The first safety element 3 is fixed or limited to the thermal bridge 7. The first safety element 3 is limited to the thermal bridge 77 by the screw 88. The second safety element 4 is fixed or limited to the thermal bridge 7. The second safety element 4 is limited to the thermal bridge 77 by the screw 88.

[0034] refer to Figure 1 The heating device includes a first terminal 5 and a second terminal 6, one end of the first terminal 5 is connected to the first safety element 3, the other end of the first terminal 5 is connected to the first lead rod 13, the first lead rod 13 is roughly parallel to the second lead rod 14, one end of the second terminal 6 is connected to the second safety element 4, and the other end of the second terminal 6 is connected to the second lead rod 14.

[0035] refer to Figure 4 The center line of the first heating part 121 and the center line of the second heating part 122 are located in the same plane, and the center line of the second heating part 122 is located outside the center line of the first heating part 121, similar to the shape of a WiFi signal, and the length of the first heating part 121 is approximately the same as the length of the second heating part 122.

[0036] The utility model also provides a pump, comprising the above-mentioned heating device, the pump also comprising a motor assembly and a pump housing, the motor assembly having a fixing portion, the fixing portion being limit-connected to one end of the pump housing, and the heating plate being limit-connected to the other end of the pump housing.

[0037] The heating device includes a heating tube 1, which includes a shell 11 and a heating wire 12. The heating wire 12 is located in the shell 11. The heating wire 12 includes a first heating part 121 and a second heating part 122. In the height direction of the heating disk 2, the first heating part 121 and the second heating part 122 are stacked; or in the radial direction of the heating disk 2, the first heating part 121 and the second heating part 122 are nested. The first heating part 121 and the second heating part 122 are located in the same shell 11 to reduce the occurrence of thermal corrosion.

[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A heating device, comprising a heating tube (1) and a heating plate (2), wherein the heating plate (2) has a groove portion (21), the groove portion (21) has a groove, and a portion of the heating tube (1) is accommodated in the groove, characterized in that: The heating tube (1) comprises a shell (11) and a heating wire (12); the heating wire (12) is located inside the shell (11); the heating wire (12) comprises a first heating portion (121) and a second heating portion (122); in the height direction of the heating disk (2), the first heating portion (121) and the second heating portion (122) are stacked; or in the radial direction of the heating disk (2), the first heating portion (121) and the second heating portion (122) are nested.

2. The heating device according to claim 1, characterized in that The first heating portion (121) is spiral-shaped, and the second heating portion (122) is spiral-shaped. It is defined that the surface perpendicular to the height direction of the heating plate (2) is the first surface, and the projection of the center line of the first heating portion (121) on the first surface coincides with the projection of the center line of the second heating portion (122) on the first surface; or the center line of the first heating portion (121) and the center line of the second heating portion (122) are located in the same plane, and the center line of the second heating portion (122) is located outside the center line of the first heating portion (121).

3. The heating device according to claim 2, characterized in that: The heating wire (12) comprises a first connecting portion (123), the first connecting portion (123) is substantially U-shaped, the first heating portion (121) extends from one end of the first connecting portion (123), and the second heating portion (122) extends from the other end of the first connecting portion (123).

4. The heating device according to claim 3, characterized in that: The heating wire (12) has a first terminal (124), the first terminal (124) extends from the end of the first heating part (121) away from the first connecting part (123), the heating tube (1) includes a first lead rod (13), the first terminal (124) is sleeved on the first lead rod (13), and a portion of the first lead rod (13) is located in the shell (11).

5. The heating device according to claim 4, characterized in that: The heating wire (12) has a second terminal (125), and the second terminal (125) extends from the end of the second heating portion (122) away from the first connecting portion (123). The heating tube (1) includes a second lead rod (14), and the second terminal (125) is sleeved on the second lead rod (14). Part of the second lead rod (14) is located in the shell (11).

6. The heating device according to claim 5, characterized in that: The heating tube (1) comprises an insulating member (15), a portion of which is located inside the shell (11), the first lead rod (13) passes through the insulating member (15), and the second lead rod (14) passes through the insulating member (15).

7. The heating device according to claim 6, characterized in that The insulating member (15) comprises a first body (151) and a first protrusion (152), wherein the first protrusion (152) protrudes from the upper surface of the first body (151), a portion of the first lead rod (13) is located on a side of the first body (151) away from the first protrusion (152), a portion of the first lead rod (13) is located on a side of the first protrusion (152) away from the first body (151), a portion of the second lead rod (14) is located on a side of the first body (151) away from the first protrusion (152), a portion of the second lead rod (14) is located on a side of the first protrusion (152) away from the first body (151), and the shell (11) has a first bending portion, and the first bending portion abuts against the upper surface of the first body (151).

8. The heating device according to claim 7, characterized in that: The heating device comprises a first safety element (3), a second safety element (4) and a thermal bridge (7); the thermal bridge (7) is fixed to the heating plate (2) and / or the heating tube (1); the first safety element (3) is fixed or limited to the thermal bridge (7); and the second safety element (4) is fixed or limited to the thermal bridge (7).

9. The heating device according to claim 8, characterized in that: The heating device comprises a first terminal (5) and a second terminal (6), one end of the first terminal (5) is connected to the first safety element (3), the other end of the first terminal (5) is connected to the first guide rod (13), one end of the second terminal (6) is connected to the second safety element (4), and the other end of the second terminal (6) is connected to the second guide rod (14).

10. A pump, characterized in that: The heating device comprises the heating device according to any one of claims 1 to 9, wherein the pump further comprises a motor assembly and a pump housing, wherein the motor assembly has a fixing portion, the fixing portion is limit-connected to one end of the pump housing, and the heating plate (2) is limit-connected to the other end of the pump housing.

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