CN112629007B - Heating device and pump with same - Google Patents

Abstract

The application discloses a heating device, comprising: the heating plate is provided with an accommodating part, the accommodating part comprises a bottom wall, a side wall and an accommodating groove, the side wall is connected with the bottom wall and extends upwards from the bottom wall, the bottom wall is positioned at the bottom of the accommodating groove, and the side wall is positioned at the outer side of the accommodating groove; the heating pipe comprises a main body part, at least part of the main body part is arranged in the accommodating groove, the outer surface of the main body part comprises a lower surface and a side surface, bonding materials or welding materials are filled between the lower surface and the bottom wall, bonding materials or welding materials are filled between the side surface and the side wall, at least one of the lower surface and the side surface is provided with a pressing groove, and the bonding materials or welding materials are at least partially filled in the pressing groove. The heating device provided by the application improves the stability and the heat transfer efficiency of the fixed connection between the heating pipe and the heating disc.

Description

Heating device and pump with same

Technical Field

The application belongs to the technical field of household appliances, and particularly relates to a heating device and a pump with the heating device.

Background

In the operation process of household equipment such as a dish washer or a washing machine, a washing system is used for providing power, and a heating device is used for providing high-temperature water flow. A disc heating device is generally used as a heating system for heating. In the related art, the heating pipe and the heating disc are directly welded by welding flux, and bubbles are easy to generate between the heating pipe and the heating disc due to the problems of the outer surface of the heating pipe and the flatness of the heating disc, and the welding flux can not completely fill the welding surface, so that poor welding between the heating pipe and the heating disc is caused, and the welding stability and the heat transfer efficiency between the heating pipe and the heating disc are affected.

Disclosure of Invention

The object of the application is to provide a heating device with a high stability of the connection of the heating tube to the heating plate.

In order to achieve the above object, a heating device of the present application includes:

The heating plate is provided with an accommodating part, the accommodating part comprises a bottom wall, a side wall and an accommodating groove, the side wall is connected with the bottom wall and extends upwards from the bottom wall, the bottom wall is positioned at the bottom of the accommodating groove, and the side wall is positioned at the outer side of the accommodating groove;

The heating pipe comprises a main body part, at least part of the main body part is arranged in the accommodating groove, the outer surface of the main body part comprises a lower surface and a side surface, an adhesive material or welding flux is filled between the lower surface and the bottom wall, an adhesive material or welding flux is filled between the side surface and the side wall, at least one of the lower surface and the side surface is provided with a pressing groove, and the adhesive material or welding flux is at least partially filled in the pressing groove.

According to the technical scheme, the main body part of the heating pipe is arranged in the accommodating groove of the accommodating part, bonding materials or welding flux are filled between the lower surface and the bottom wall and between the side surface and the side wall, air bubbles generated when the flatness between the lower surface and the bottom wall and between the side surface and the side wall is poor are discharged from the pressing groove, and the bonding materials or welding flux fill the air bubbles and the pressing groove area, so that no air bubbles exist between the heating pipe and the heating plate, the stability and the heat transfer efficiency of the fixed connection between the heating pipe and the heating plate are improved, meanwhile, the filament breakage phenomenon caused by uneven heat transfer of the heating pipe is avoided, and the service life of the heating pipe is prolonged.

Optionally, the pressing groove comprises a radial pressing groove and a circumferential pressing groove, and the radial pressing groove and the circumferential pressing groove are mutually intersected.

Optionally, the circumferential pressure groove includes a plurality of and mutual interval arrangement, the radial pressure groove includes a plurality of and mutual interval arrangement, the circumferential pressure groove is followed the extending direction of main part extends, the radial pressure groove is along roughly perpendicular to the direction extension of circumferential pressure groove, the circumferential pressure groove with main part arc camber is roughly the same, adjacent the equidistant setting of radial pressure groove, adjacent the equidistant setting of circumferential pressure groove.

Optionally, the main body portion further includes a plurality of protrusions, the protrusions are located between adjacent pressing grooves, at least a portion of the protrusions are abutted against the accommodating portion, and portions of the protrusions not abutted against the accommodating portion and the pressing grooves are fixed by the adhesive material or the solder.

Optionally, the protrusions are formed by adjacent radial pressing grooves and adjacent circumferential pressing grooves, the protrusions comprise first protrusions located on the lower surface and second protrusions located on the side surfaces, at least part of the first protrusions are abutted against the bottom wall, and at least part of the second protrusions are abutted against the side walls.

Optionally, the outer contour of the first protrusion is square or inverted trapezoid, and the outer contour of the second protrusion is square or inverted trapezoid.

Optionally, the depth of the pressing groove is 0.1-0.25mm.

Optionally, the lower surface of the main body portion is matched with the bottom wall of the accommodating portion, the side surface of the main body portion is matched with the side wall of the accommodating portion, and in the axial direction of the heating plate, the outer contour of the cross section of the main body portion is polygonal, or the outer contour of the cross section of the lower surface is arc-shaped.

Optionally, the height of lateral wall is greater than or equal to the main part is followed the ascending height of heating dish axial, heating device is equipped with the baffle, baffle fixed connection the heating dish is last and cover partial the heating pipe, still be equipped with temperature controller and fuse on the baffle, the both ends of heating pipe still are equipped with two at least convex guide bars, guide bar pass through the conductor bar respectively with temperature controller and fuse electricity are connected.

The application also provides a pump comprising: the heating device of the above embodiment;

a pump housing including a pump cavity, the pump housing including oppositely disposed first and second ends, the heating device being secured to the first end of the pump housing; the impeller is arranged in the pump cavity; and a motor secured to the second end of the pump housing, the motor being coupled to the impeller.

Drawings

FIG. 1 is an assembled schematic perspective view of a pump according to an embodiment of the application;

FIG. 2 is an exploded perspective view of a pump according to an embodiment of the present application;

FIG. 3 is a schematic perspective view of a heating device assembled with a pump housing according to an embodiment of the present application;

FIG. 4 is an exploded perspective view of a heating device and pump housing according to an embodiment of the present application

Fig. 5 is an assembled perspective view of a heating device according to an embodiment of the present application;

FIG. 6 is an exploded schematic view of a heating device according to an embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of a heating device according to an embodiment of the present application taken along line A-A in FIG. 5;

FIG. 8 is a schematic view of a heating tube according to an embodiment of the present application;

Fig. 9 is an assembled perspective view of a heating device according to another embodiment of the present application;

FIG. 10 is a schematic cross-sectional view of a heating device according to another embodiment of the present application taken along line B-B in FIG. 9;

FIG. 11 is an enlarged view of a portion of the interior of circle C of FIG. 7;

fig. 12 is a partial enlarged view of the inside of circle D in fig. 8.

Fig. 13 is a heating apparatus having a thermostat according to an embodiment of the present application.

Reference numerals:

1-a heating device; 11-heating plate; 12-a housing; 121-a bottom wall; 122-sidewalls; 123-an accommodating groove; 13-heating the pipe; 131-a main body; 1311-lower surface; 1312-sides; 1313-upper surface; 132-protrusions; 1321-first protrusions; 1322-a second protrusion; 133-pressing a groove; 134-radial indent; 135-circumferential indent; 136-connecting parts, 1361-leading bars; 14-a fixed zone; 15-temperature controller; a 16-fuse; 17-a metal plate; 18-conductive bars; 2-pump shell; 21-a water inlet; 22-water outlet; 23-pump chamber; 3-an impeller; 4-an electric motor; 5-end cap.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1-13, the present application is a heating device 1, which is generally applied to a drive pump of a dishwasher or the like or is used as a heating element alone to heat an aqueous medium of the washing machine or the like. The heating device 1 comprises a heating plate 11 and a heating pipe 13, wherein the heating plate 11 is provided with a containing part 12, and the heating pipe 12 is at least partially contained in the containing part 12.

With continued reference to fig. 1-6, the heater plate 11 is adapted to the pump housing 2, one end of the pump housing 2 is circular or approximately circular, and the heater plate 11 is disc-shaped or approximately disc-shaped. The disk-shaped heating plate 11 is provided with a recessed accommodating portion 12 in the axial direction, and the accommodating portion 12 is circumferentially provided along the circumferential edge of the heating plate 11 and is circumferentially closed. The accommodating portion 12 includes an accommodating groove 123, the heating tube 13 includes a main body portion 131 and two connecting portions 136, and the main body portion 131 is at least partially disposed in the accommodating groove 123, so that the main body portion 131 is adapted to the accommodating groove 123, and the heating tube 13 is bent from an original strip shape to form an arc shape adapted to the accommodating groove 123. The connection portion 136 is axially offset in the longitudinal direction with respect to the elongated heating tube 13, and after the heating tube 13 is bent, the heating tube 13 is formed to be matched with the heating pan 11. The accommodating portion 12 is axially arranged along the circumferential edge, so that the space of the accommodating portion 12 can be increased, and the heat conduction area of the heating pipe 13 and the accommodating portion 12 is increased, thereby increasing the heating efficiency of the heating device 1.

The heating plate 11 is made of stainless steel, the heating pipe 13 is made of aluminum pipe, and the heating plate and the heating pipe are made of metal with good heat conductivity, so that heat transfer efficiency is high. The heating plate 11 is directly contacted with the medium such as water, and the stainless steel material can prevent corrosion, so that the service life is prolonged; the heating pipe 13 needs to be bent, the ductility of aluminum is good, the processing is easy, and the production efficiency is improved.

With continued reference to fig. 5-8, the accommodating portion 12 further includes a bottom wall 121 and a side wall 122, the side wall 122 is connected to the bottom wall 121 and extends upward from the bottom wall 121, the bottom wall 121 is located at the bottom of the accommodating groove 123, the side wall 122 is located at the outer side of the accommodating groove 123, and the outer surface of the main body 131 of the heating tube 13 includes a lower surface 1311 and a side surface 1312. The main body 131 of the heating tube 13 is accommodated in the accommodating groove 123 of the accommodating portion 12, and the lower surface 1311 of the outer surface of the main body 131 is matched with the bottom wall 121 of the accommodating portion 12. The heating pipe 13 is fixed by the adhesive material or the solder, so that the heating pipe 13 and the heating plate 11 do not move relatively, and heat can be conducted to the bottom wall 121 of the accommodating part 12 through the lower surface 1311 of the main body part 131 or to the side wall 122 of the accommodating part 12 through the side surface 1312 of the main body part 131, and further, the heat of the heating pipe 13 is transferred to the heating plate 11, so that the purpose of heating the medium such as water is realized.

With continued reference to fig. 8 and 12, the heating tube 13 is provided with a pressing groove 133. Specifically, at least one of the lower surface 1311 and the side surface 1312 of the main body 131 of the heating pipe 13 is provided with a pressing groove 133, the pressing groove 133 is formed by pressing a mold, the mold pressing can improve the production efficiency, the lower surface 1311 is provided with a plurality of radial pressing grooves 134 and circumferential pressing grooves 135, and two adjacent radial pressing grooves 134 and two adjacent circumferential pressing grooves 135 are matched together to form a protrusion 132.

With continued reference to fig. 5-7 and 11, an adhesive or solder is provided between the heating tube 13 and the heating pan 11. Specifically, the lower surface 1311 of the main body 131 of the heating pipe 11 and the bottom wall 121 of the accommodating portion 12 are filled with an adhesive material or solder; the side surface 1312 of the outer surface of the main body 131 is fitted to the side wall 122 of the housing 12, and an adhesive or solder is filled between the side surface 1312 of the main body 131 and the side wall 122 of the housing 12. The bonding material or the solder is firstly placed on the bottom wall 121 of the accommodating part 12 of the heating disc 11, when the main body part 131 of the heater 13 is placed in the accommodating part 12, the lower surface 1311 of the outer surface of the main body part 131 is firstly contacted with the bonding material or the solder, and when the lower surface 1311 with better flatness is extruded with the bottom wall 121 of the accommodating part 12 in the bonding or welding process, the solder is extruded to the pressing groove 133; when bubbles are formed between the lower surface 1311 having poor flatness and the bottom wall 121 of the accommodating portion 12, the air in the bubbles is discharged outwardly along the pressing groove 133 due to the existence of the pressing groove 133, and the bonding material or solder occupies the positions of the original bubbles and the pressing groove 133, so that the lower surface 1311 is completely bonded with the solder, thereby improving the soldering quality. As the heating pipe 11 is further pressed, the adhesive material or solder is filled between the side face 1312 of the main body portion 131 and the side wall 122 of the accommodating portion 12, and when the flatness of the side face 1312 of the main body portion 131 and the side wall 122 of the accommodating portion 12 is good, the adhesive material or solder is filled in the pressing groove 133; when the flatness is poor, the bonding material and the solder are filled in the positions of the air bubbles and the pressing grooves 133. Finally, no air bubbles exist between the lower surface 1311 and the bottom wall 121 and between the side surface 1312 and the side wall 122, so that no air heat transfer exists between the lower surface 1311 and the bottom wall 121, and the heat transfer efficiency between the heating pipe and the solder is improved. The heat on the heating pipe 13 can be timely transmitted to the solder and the heating disc 11, so that the heat transmission from the lower surface 1311 to the bottom wall 121 is uniform, the generation of local overheating phenomenon of the lower surface 1311 of the heating pipe 13 is reduced, the use safety of the heating pipe 13 is improved, and the service life of the heating pipe 13 is prolonged.

In some embodiments, as shown in fig. 7 and 11, the outer surface of the heating tube 13 is adapted to the receiving portion 12, and the outer contour of the section of the heating tube 13 is polygonal in the axial direction of the heating pan 11.

The heating pipe 13 is along bending back heating pipe 13 axial main part 131 and the ascending accommodation portion 12 looks adaptation of heating dish 11 for the main part 131 of heating pipe 13 can cooperate with accommodation portion 12, is interference fit between main part 131 and the accommodation portion 12 of heating pipe 13, makes heating pipe 13 and heating dish 11 relatively fixed make the heat conduction efficiency higher again simultaneously. The interference fit between the main body 131 and the accommodating portion 12 can enable the lower surface 1311 with better flatness to be in direct close fit with the bottom wall 121; bubbles are easily generated between the lower surface 1311 with poor flatness and the bottom wall 121, and due to the existence of the pressing groove 133, the bubbles are discharged along the pressing groove 133, and the bonding or solder fills the bubble and the pressing groove 133 area, so that the bubbles between the lower surface 1311 and the bottom wall 121 are reduced as much as possible. Further extrusion heating pipe 13, lower surface 131 and diapire 121 between the laminating more, aluminium heating pipe 13 has good ductility, and lower surface 1311 can further extend to the relatively poor region of planarization in the extrusion process, makes lower surface 131 and diapire 121 further press close to, reduces the loss of heat transfer between heating pipe 13 and the heating plate. When the extrusion is finished, the pressing groove 133 is filled with bonding material or solder, so that the heating pipe 13 and the heating plate 11 can be fixed, and the stability of connection between the heating pipe 13 and the heating plate 11 is improved; meanwhile, the bonding material or the solder can also squeeze out bubbles in the pressing groove 133, so that the lower surface 1311 and the side surface 1312 are more attached to the accommodating part 12 to directly transfer heat, and compared with the bubbles existing between the heating pipe 13 and the heating plate 11, the heat conduction efficiency is higher when the heat is transferred between the pressing groove 133 and the bottom wall 121 and between the pressing groove 133 and the side wall 122 through the bonding material or the solder.

The outer contour of the section of the heating pipe 13 along the axial direction of the heating plate 11 is polygonal, the outer contour of the section of the receiving part 12 along the axial direction of the heating plate 11 is matched with the outer contour of the section of the heating pipe 13, and the polygonal arrangement can enable the heating pipe 13 to be in multi-surface contact with the heating plate 11, so that the contact area of welding flux can be increased, the stability between the heating pipe 13 and the heating plate 11 is improved, the heat conduction area between the heating pipe 13 and the heating plate 11 can be enlarged, and the heat conduction efficiency is improved.

Bubbles (such as a gap between the heating tube 13 and the heating plate 11) are formed between the heating tube 13 and the heating plate 11, so that the heating tube 13 and the heating plate 11 cannot be completely attached, and after welding is completed, the bubbles are filled with solder to form a fixing area 14 for fixing the heating tube 13 and the heating plate 11.

In other embodiments, as shown in fig. 9 and 10, the outer surface of the heating tube 13 is adapted to the receiving portion 12, and the outer contour of the cross section of the lower surface 1311 is circular in the axial direction of the heating plate 11.

The lower surface 1311 of the heating tube 13 is at least partially circular arc-shaped along the outer contour of the section of the heating plate 11 in the axial direction, and the outer contour of the section of the receiving portion 12 in the axial direction of the heating plate 11 is adapted to the outer contour of the section of the heating tube 13. During the welding process, the solder may be added to the bottommost portion of the circular arc-shaped receiving portion 12, and when the heating tube 13 is placed in the receiving portion 12, the bottommost portion of the heating tube 13 first presses the adhesive material or the solder to flow upward along the lower surface 1311 of the heating tube 13 in the pressing groove 133, and at the same time, the adhesive material or the solder fills the air bubbles between the lower surface 1311 and the bottom wall 121 to form the fixing area 14.

In some embodiments, referring to fig. 7-12, the pressing groove 133 includes a radial pressing groove 134 and a circumferential pressing groove 135, and the radial pressing groove 134 and the circumferential pressing groove 135 are disposed to cross each other. The body 1311 further includes a plurality of protrusions 132, the protrusions 132 being located between adjacent pressing grooves 133, at least a portion of the protrusions 132 abutting against the accommodating portion 12, and portions of the protrusions 132 not abutting against the accommodating portion 12 and the pressing grooves 133 being fixed by an adhesive material or solder. Protrusion 132 is formed by adjacent radial crush slots 134 and adjacent circumferential crush slots 135, protrusion 132 comprising a first protrusion 1321 located on lower surface 1311 and a second protrusion 1322 located on side 1312, at least a portion of first protrusion 1321 abutting bottom wall 121, and at least a portion of second protrusion 1322 abutting side wall 122.

With continued reference to FIG. 12, protrusions 132 are provided on the lower surface 1311 and sides 1312 of the body portion 131 of the heating tube 12. Specifically, protrusions 132 on lower surface 1311 and sides 1312 are located between adjacent crush grooves 133, and adjacent two radial crush grooves 134 and adjacent two circumferential crush grooves 135 cooperate together to form protrusions 132.

With continued reference to fig. 11, the side surface 1312 of the main body 131 is in close contact with the side wall 122 of the accommodating portion 12, and when the flatness of the side surface 1312 and the side wall 122 is good, the first protrusion 1321 and the bottom wall 121 and the second protrusion 1322 are directly in contact with the side wall 122; when the flatness of the side face 1312 and the side wall 122 is poor, air bubbles (such as gaps between the two in fig. 11) exist between part of the first protrusions 1321 and the bottom wall 121 and part of the second protrusions 1322 and the side wall 122, and due to the presence of the protrusions 132 and the pressing grooves 133, adhesive material or solder fills the air bubbles between the first protrusions 1321 and the bottom wall 121 and between the second protrusions 1322 and the side wall 122 during the pressing of the heating pipe 13 and the heating pan 11. When the welding is completed, the air bubbles between the first protrusion 1321 and the bottom wall 121 and between the second protrusion 1322 and the side wall 122 are filled with the adhesive material or the solder, so that the parts between the first protrusion 1321 and the bottom wall 121 and between the second protrusion 1322 and the side wall 122 are directly attached, the parts which are not directly attached and the pressing groove 133 are fixedly connected through the adhesive or the solder, the stability of the connection between the heating pipe 13 and the heating plate 11 is improved, and the heat conduction efficiency between the side face 1312 and the side wall 122 is increased.

In some embodiments, referring to fig. 7 and 11, the polygon of the outer contour of the main body 131 is a quadrangle, and the quadrangle forms an inverted trapezoid or square. Specifically, in the axial direction of the heating pan 11, the outer contour of the section of the heating tube 13 is in the shape of an inverted trapezoid or square, the heating tube 13 includes a lower surface 1311 and a side surface 1312, and the accommodating portion 12 has a bottom wall 121 and a side wall 122 that cooperate with the heating tube 13. When the outer contour of the heating pipe 13 along the axial section of the heating plate 11 is in an inverted trapezoid shape, the lower surface 1311 is narrower, so that the main body part 131 is conveniently placed in the accommodating part 12, and the assembly efficiency is improved; when the outer contour of the heating pipe 13 along the axial section of the heating plate 11 is square, the main body 131 is more tightly matched with the accommodating part 12, and the square main body 131 and the accommodating part 12 are easier to process. The lower surface 1311 and the bottom wall 121, and the side surface 1312 and the side wall 122 are bonded and fixed by an adhesive or solder.

In some embodiments, referring to fig. 6, 8 and 12, the circumferential pressing grooves 135 include a plurality of radial pressing grooves 134 spaced apart from each other, the circumferential pressing grooves 135 extend along the extending direction of the main body 131, the radial pressing grooves 134 extend along a direction substantially perpendicular to the circumferential pressing grooves 135, the circumferential pressing grooves 135 have substantially the same arc curvature as the main body 131, and adjacent radial pressing grooves 134 are disposed at equal intervals, and adjacent circumferential pressing grooves 135 are disposed at equal intervals. Specifically, the pressing grooves 133 between the protrusions 132 have the same width, and the protrusions are arranged at equal intervals, so that the pressing grooves 133 with the same width are beneficial to the stability of the solder in the flowing process, and the pressing grooves are easier to discharge air of bubbles. When the soldering is completed, the solder is also easily filled in the pressing groove.

In some embodiments, protrusion 132 is generally inverted trapezoidal in shape. Specifically, the protrusion on the lower surface 1311 of the main body 131 is formed by co-operation of two adjacent radial pressing grooves 134 and two adjacent circumferential pressing grooves 135, the extension lines of the plurality of radial pressing grooves 134 intersect with the axis of the heating pipe 13, and the centers of the plurality of circumferential pressing grooves 135 are on the axis of the heating pipe 13. Adjacent two radial press grooves 134 are equidistant in the circumferential direction of the heating pipe 13, and adjacent two circumferential press grooves 135 are equidistant in the radial direction of the heating pipe 13.

In other embodiments, protrusion 132 is substantially square. Specifically, the protrusions on the lower surface 1311 of the main body 131 are formed by co-matching two adjacent radial pressing grooves 134 and two adjacent circumferential pressing grooves 135, the plurality of radial pressing grooves 134 are arranged in parallel in pairs, the plurality of circumferential pressing grooves 135 are arranged in parallel in pairs, and the radial pressing grooves 134 are arranged perpendicular to the circumferential pressing grooves 135, so that the protrusions 132 formed by co-matching two adjacent radial pressing grooves 134 and two adjacent circumferential pressing grooves 135 are square. Inverted trapezoidal and square shaped protrusions 132 design can improve solder flow stability during soldering.

In some embodiments, referring to FIG. 11, the depth of the indent 133 is 0.1-0.25mm and the width of the indent is 0.05-0.1mm. Specifically, the depth of the pressing groove 133 is 0.1-0.25mm, that is, the value range of h3 is 0.1-0.25mm, and the value of h3 and the width of the pressing groove 133 are too low, so that the air discharge of the pressing groove 133 is unsmooth, the solder flow is unsmooth, and air bubbles between the outer surface of the heating pipe 13 and the accommodating cavity 12 are not easy to discharge; h3 is too high, the thickness of the heating pipe is affected, and the heat conduction efficiency is reduced. The length range of the bulge 132 is 1-2mm, the width range of the bulge 132 is 1-2mm, and the bulge is too small, so that the width of the pressing groove 133 is too high, the pressing groove 133 occupies a relatively high area on the outer surface of the heating pipe 13, the area of direct contact between the heating pipe 13 and the heating plate 11 is affected, and the heat conduction efficiency is further affected; too large of the protrusions 132 may directly form bubbles on the surface of the protrusions 132, resulting in failure of the bubbles to contact the pressing grooves 133 and to be removed.

In some embodiments, the bonding material or solder has good thermal conductivity. Specifically, the bonding material or the solder is selected from materials having good heat conduction properties, and the better the heat conduction properties of the bonding material or the solder, the higher the heat conduction efficiency between the heating pipe 13 and the heating pan 11.

In some embodiments, referring to fig. 5-7, the depth of the receiving portion 12 is greater than or equal to the height of the heating tube 13 along the axis of the heating plate 11. Specifically, the depth of the accommodating portion 12 is h1, the height of the heating tube 13 along the axial direction of the heating plate 11 is h2, and h1 is always greater than or equal to h2, so that the direct contact area between the heating tube 13 and the heating plate 11 is larger, and the heat conduction efficiency is improved. When the outer contour of the cross section of the main body 131 of the heating pipe 13 is semicircular, the contact surface between the main body 131 and the accommodating portion 12 exceeds 60%; when the outer contour of the cross section of the main body 131 of the heating pipe 13 is inverted trapezoid, the contact surface between the main body 131 and the accommodating portion 12 exceeds 65%; when the outer contour of the cross section of the main body 131 of the heating pipe 13 is square, the contact surface between the main body 131 and the receiving part 12 exceeds 70%. Of course, the outer contour of the cross section of the main body 131 of the heating pipe 13 is not limited to the above three, but may be triangular, pentagonal, hexagonal, etc., and the corresponding accommodating portion 12 is matched with the main body 131. The contact area between the heating pipe 13 and the heating plate 11 is increased, and the heat conduction efficiency is improved.

In some embodiments, referring to fig. 13, the heating device 1 is provided with a partition 17, the partition 17 is fixedly connected to the heating plate 11 and covers part of the heating pipe 13, and the partition 17 is further provided with a temperature controller 15 and a fuse 16. Specifically, be equipped with baffle 17 on the heating device 1, baffle 17 passes through the welding mode and links to each other with heating plate 11 is fixed, and the welding connection mode not only promotes baffle 17 joint strength and reliability, can effectively reduce the change of area of contact between baffle 17 and the heating plate 11 moreover, guarantees the stability of heat conduction transmission. The baffle 17 covers part of the heating pipe 13, and the smooth surface of the baffle 17 is far away from the heating pipe 13, and the temperature controller 15 and the fuse 16 are arranged on the smooth surface of the baffle 17, and the baffle 17 is fixedly connected with the temperature controller 15 and the fuse 16 respectively, such as screw connection, riveting and the like, so that the stability of the connection of the temperature controller 15 and the fuse 16 is ensured, normal work is prevented from being influenced by bad factors such as vibration and the like during working, overheating of the heating pipe 13 is prevented, the safety of the heating pipe 13 is ensured, and the service life of the heating device 1 is prolonged.

In some embodiments, referring to fig. 8 and 13, at least two protruding guide rods 1361 are further disposed at two ends of the heating tube 13, and the guide rods 1361 are electrically connected to the temperature controller 15 and the fuse 16 through the conductive rods 18, respectively. Specifically, the heating pipe 13 is provided with a connection portion 136 connected to the main body 131, the connection portion 136 is located at two ends of the main body 131, the connection portion 136 is provided with guide rods 1361 at one ends far away from the main body 131, the guide rods 1361 are electrically connected to the heating wires in the heating pipe 13, and the guide rods 1361 are electrically connected to the temperature controller 15 and the fuse 16 through the conductive rods 18. One end of the conductive rod 18 is welded with the guide rod 1361, and the other end is welded with an electric plug of the temperature controller 15; one end of the conductive rod 18 is welded with the guide rod 1361, and the other end is welded with an electrical plug of the fuse 16, so that the stability of connection and the timeliness of power-off protection are ensured.

In some embodiments, the heating pipe 13 on the heating device 1 is connected with the heating disc 11 through welding, the partition 17 is respectively fixedly connected with the temperature controller 15 and the fuse 16, and two ends of the conductive rod 18 are respectively welded with the guide rod 1361 and the electric plug. The fixed connection ensures that all parts are connected stably, prevents poor contact of all parts caused by vibration of the motor 4 in operation, and improves the working safety of the heating device 1 and the service life of the heating device 1.

In other embodiments, the heating plate 11 is square, rectangular, U-shaped, oval, etc., the accommodating portion 12 is disposed at the periphery of the heating plate 11, and the heating tube 13 is bent in a shape adapted to the accommodating portion 12.

In other embodiments, the length of the accommodating portion 12 is consistent with that of the heating tube 13, the main body portion 131 of the heating tube 13 is disposed in the accommodating portion 12, the connecting portion 136 of the heating tube 13 is matched with the end portion of the accommodating portion 12, that is, the angle of the connecting portion 136 axially offset in the length direction relative to the elongated heating tube 13 and the angle of the bottom surface of the end portion of the accommodating portion 12 offset relative to the bottom wall 121 of the accommodating portion 12 are consistent, so that the bottom wall 121 of the accommodating portion 12 abuts against the lower surface 1311 of the main body portion 131, the lower surface of the connecting portion 136 abuts against the bottom surface of the end portion of the accommodating portion 12, heat at the connecting portion 136 can be transmitted through the heating disc 11, the situation that the inside of the heating tube 13 is broken due to local overheating of the connecting portion 136 is prevented, and the service life of the heating tube 13 is prolonged.

The pump of the embodiment of the application comprises the heating device1, the pump shell 2, the impeller 3, the motor 4 and the end cover 5 of the embodiment. Specifically, the pump shell 2 is a cylinder with two open ends, the heating device1 is fixed at one end of the pump shell 2, the end cover 5 is arranged on the heating device1, the motor 4 is fixed at the other end of the pump shell 2, the pump shell 2 comprises a pump cavity 23, the impeller 3 is arranged in the pump cavity 23, the motor 4 drives the impeller 3 to rotate, meanwhile, the side wall of the pump shell 2 is also provided with a water outlet 22, the heating device1 at one end of the pump shell 2 is provided with a water inlet 21, water is driven to enter from the water inlet 21 through the rotation of the impeller 3, the heating device1 heats the water, and then the heated water is discharged through the water outlet 22.

In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, unless specifically defined otherwise. The description of the terms "one embodiment," "some embodiments," or "particular examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In the present application, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

While embodiments of the present application have been shown and described, it will be understood that the above description is only of a preferred embodiment of the application, and is not intended to limit the application in any way, although the application has been described above with respect to the preferred embodiment, it is not intended to limit the application to that which is described in any way, and that the skilled artisan, while the foregoing disclosure may be used to make various changes and modifications in equivalent embodiments without departing from the scope of the present application, any simple modification, equivalent changes and modifications of the foregoing embodiments according to the technical principles of the present application fall within the scope of the present application.

Claims (10)

1. A heating device, comprising:

The heating plate (11), the heating plate (11) is provided with a containing part (12), the containing part (12) comprises a bottom wall (121), a side wall (122) and a containing groove (123), the side wall (122) is connected with the bottom wall (121) and extends upwards from the bottom wall (121), the bottom wall (121) is positioned at the bottom of the containing groove (123), and the side wall (122) is positioned at the outer side of the containing groove (123);

Heating pipe (13), heating pipe (13) include main part (131), at least part of main part (131) is located accommodating groove (123), the surface of main part (131) includes lower surface (1311) and side (1312), lower surface (1311) with fill between diapire (121) bonding material or solder, side (1312) with fill between lateral wall (122) bonding material or solder, lower surface (1311) with at least one of them is equipped with indent (133) in side (1312), bonding material or solder at least part fill in indent (133).

2. The heating device according to claim 1, characterized in that the pressure groove (133) comprises a radial pressure groove (134) and a circumferential pressure groove (135), the radial pressure groove (134) and the circumferential pressure groove (135) being arranged crosswise to each other.

3. The heating device according to claim 2, wherein the circumferential pressing grooves (135) comprise a plurality of radial pressing grooves (134) which are arranged at intervals, the circumferential pressing grooves (135) extend along the extending direction of the main body portion (131), the radial pressing grooves (134) extend along a direction substantially perpendicular to the circumferential pressing grooves (135), the arc curvatures of the circumferential pressing grooves (135) and the main body portion (131) are substantially the same, adjacent radial pressing grooves (134) are arranged at equal intervals, and adjacent circumferential pressing grooves (135) are arranged at equal intervals.

4. The heating device according to claim 2, wherein the main body portion (131) further includes a plurality of projections (132), the projections (132) are located between adjacent pressing grooves (133), at least part of the projections (132) are abutted against the accommodating portion (12), and both the portion of the projections (132) not abutted against the accommodating portion (12) and the pressing grooves (133) are fixed by the adhesive material or the solder.

5. The heating device according to claim 4, wherein the protrusions (132) are jointly formed by two adjacent radial pressing grooves (134) and two adjacent circumferential pressing grooves (135), the protrusions (132) comprising a first protrusion (1321) located at the lower surface (1311) and a second protrusion (1322) located at the side surface (1312), at least part of the first protrusion (1321) being in abutment with the bottom wall (121) and at least part of the second protrusion (1322) being in abutment with the side wall (122).

6. A heating device according to claim 5, wherein the first protuberance (1321) has an outer contour that is substantially square or inverted trapezoid and the second protuberance (1322) has an outer contour that is substantially square or inverted trapezoid.

7. A heating device according to claim 1, characterized in that the depth of the indent (133) is 0.1-0.25mm.

8. The heating device according to claim 1, characterized in that the lower surface (1311) of the body part (131) is adapted to the bottom wall (121) of the receiving part (12), the side surface (1312) of the body part (131) is adapted to the side wall (122) of the receiving part (12), and the outer contour of the cross section of the body part (131) is polygonal or the outer contour of the cross section of the lower surface (1311) is circular arc-shaped in the axial direction of the heating plate (11).

9. The heating device according to claim 4, wherein the height of the side wall (122) is greater than or equal to the height of the main body (131) along the axial direction of the heating plate (11), the heating device (1) is provided with a partition plate (17), the partition plate (17) is fixedly connected to the heating plate (11) and covers part of the heating pipe (13), the partition plate (17) is further provided with a temperature controller (15) and a fuse (16), two ends of the heating pipe (13) are further provided with at least two protruding guide bars (1361), and the guide bars (1361) are respectively electrically connected with the temperature controller (15) and the fuse (16) through conductive bars (18).

10. A pump, comprising: the heating device (1) according to any one of claims 1-9;

-a pump housing (2) comprising a pump chamber (23), said pump housing comprising a first end and a second end arranged opposite each other, said heating device (1) being fixed to the first end of said pump housing (2);

an impeller (3), wherein the impeller (3) is arranged in the pump cavity (23);

-a motor (4), said motor (4) being fixed to a second end of said pump housing (2), said motor (4) being connected to the impeller (3).