CN214315647U - Heating device and pump with same - Google Patents

Abstract

The application provides a heating device and have this heating device's pump, including heating pipe assembly and heating plate, heating device includes the installed part, first safety device and second safety device, installed part and body part fixed connection, first safety device includes first main part and first base, second safety device includes second main part and second base, in the one side of installed part dorsad body part, at least part and the installed part fixed connection of first main part, at least part and the installed part fixed connection of second main part, first base and first main part fixed connection, second base and second main part fixed connection, the distance between first base and the second base is greater than or equal to 6 mm. The heating device of the application improves system safety.

Description

Heating device and pump with same

Technical Field

The present application relates to the field of household appliance technology, and more particularly, to a heating device and a pump having the same.

Background

The heating device used on the existing household dish washing machine mainly comprises a heating plate, a heating pipe, a fuse and a fuse, wherein the fuse and the fuse are integrated, so that the distance between the fuse and the fuse is short, and water drops generated in certain special environments, such as an excessively humid environment, can cause short circuit at the wiring position of the fuse and the fuse.

SUMMERY OF THE UTILITY MODEL

The object of the application is to provide a heating device which can improve the safety.

In order to achieve the above object, the present application provides a heating device, including a heating tube assembly and a heating plate, where the heating plate has a groove portion, the groove portion has a groove, and a part of the heating tube assembly is accommodated in the groove, and the heating device is characterized in that the heating device includes an installation member, a first safety device and a second safety device, where one end of the heating tube assembly is electrically connected to the first safety device, and the other end of the heating tube assembly is electrically connected to the second safety device; the heating plate comprises a body part, the groove part is recessed in the body part, the mounting part is fixedly connected with the body part, the first safety device comprises a first main body part and a first base part, the second safety device comprises a second main body part and a second base part, at least part of the first main body part is fixedly connected with the mounting part on one side of the mounting part, which is back to the body part, at least part of the second main body part is fixedly connected with the mounting part, the first base part is fixedly connected with the first main body part, the second base part is fixedly connected with the second main body part, and the distance between the first base part and the second base part is larger than or equal to 6 mm.

According to the technical scheme, the heating device is provided with the first safety device and the second safety device, at least part of the first main body part is fixedly connected with the mounting part, at least part of the second main body part is fixedly connected with the mounting part, and the distance between the first base part and the second base part is larger than or equal to 6mm, so that the distance between the first safety device and the second safety device is larger than or equal to 6mm, the risk of short circuit caused by too close distance under certain conditions is reduced, and the safety performance is improved.

Another object of the present application is to provide a pump, including a pump housing, a motor, and an impeller, and further including the above-mentioned heating device, the heating device is provided with a first safety device and a second safety device, at least a part of the first main body portion is fixedly connected to the mounting member, at least a part of the second main body portion is fixedly connected to the mounting member, and a distance between the first base portion and the second base portion is greater than or equal to 6mm, so that a distance between the first safety device and the second safety device is greater than or equal to 6mm, a risk of short circuit caused by too close distance in some cases is reduced, and safety performance is improved.

The application provides a pump, including pump case, motor and impeller, still include foretell heating device, the one end of pump case is fixed heating device, the other end of pump case is fixed the motor, the pump case still is equipped with the pump chamber, the impeller holding is in the pump chamber, the motor drives the impeller rotates

Drawings

FIG. 1 is a schematic view of an assembly of a heat pump according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a heating device according to an embodiment of the present application;

FIG. 3 is an exploded schematic view of a heating device according to an embodiment of the present application;

FIG. 4 is a schematic sectional view taken along line A-A of FIG. 2;

FIG. 5 is a schematic sectional view taken along line B-B in FIG. 2;

FIG. 6 is an enlarged schematic view of circle C of FIG. 2;

FIG. 7 is a schematic sectional view taken along line D-D in FIG. 6;

FIG. 8 is an enlarged schematic view of circle E of FIG. 4;

FIG. 9 is a schematic diagram of a heating plate according to an embodiment of the present application;

FIG. 10 is a schematic structural view of a mount according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a security device according to an embodiment of the present application;

fig. 12 is an enlarged schematic view of the F-turn in fig. 3.

Reference numerals:

10-a heating device; 1-heating a tube assembly; 101-a first wall; 102-a second wall; 103-third wall; 104-a fourth wall; 11-a first guide rod; 12-a second guide rod; 2-heating the plate; 21-groove section; 211 — a first sidewall; 212-a second side wall; 213-bottom wall of the groove; 22-an outer peripheral portion; 23-a body portion; 3-mounting parts; 31-a first fixture; 32 a second fixing member; 4-a safety device; 41-a first security device; 410-a first body portion; 411-an extension; 4111-a first via; 412 a first connection terminal; 4121-a wave section; 4122-wave peak; 4123-valley portion; 413-a first base; 42-a second safety device; 420-a second body portion; 421-a second connection terminal; 422-a second base; 5-a wire connecting rod; 51-a first wire bar; 52-a second wire bar; 6-cover plate; 61-a second via; 62-a clamping part; 621-notch part; 7-a pump housing; 8-motor.

Detailed Description

Embodiments of the present application will be described below with reference to the accompanying drawings.

Referring to fig. 1, the heating device 10 of the present application may be used in a household appliance such as a dishwasher or a washing machine, and the heating device 10 may be integrated with a pump as shown in fig. 1 as a heating pump, or may be used alone to heat a medium such as water.

Referring to fig. 2 and 3, a heating device 10 of the present application includes a tube assembly 1 and a heating pan 2. The heating plate 2 is disc-shaped or approximately disc-shaped, and the heating plate 2 can be made of stainless steel materials, so that the corrosion resistance of the heating plate 2 is improved. The disk-shaped heating plate 2 is provided with a groove portion 21 recessed in the body portion 23 in the axial direction, and the groove portion 21 is provided along the circumferential direction of the heating plate 2, and may be circumferentially closed. The part of the heating pipe component 1 is located in the groove of the groove part 21, and in order to enable the heating pipe component 1 to be matched with the groove, the heating pipe component 1 is bent into an arc shape matched with the groove, so that the contact area between the heating pipe component 1 and the groove part 21 is increased, and the heating efficiency of the heating device 10 is improved.

Referring to fig. 4 and 9, the heating plate 2 further includes an outer peripheral portion 22 and a main body portion 23, the recessed portion 21 includes a first side wall 211, a second side wall 212, and a recessed bottom wall 213, the first side wall 211, the second side wall 212, and the recessed bottom wall 213 are integrally formed, one end of the recessed bottom wall 213 is connected to one end of the first side wall 211, the other end of the recessed bottom wall 213 is connected to one end of the second side wall 212, the first side wall 211 is relatively close to the main body portion 23, the second side wall 212 is relatively close to the outer peripheral portion 22, the other end of the first side wall 211 is connected to a circumferential edge of the main body portion 23, and the outer peripheral portion 22 is connected to the other end of the second side wall 212. The vertical height of the first side wall 211 is L1, the vertical height 212 of the second side wall 212 is L2, and L1 is smaller than L2. The peripheral portion 22 is located outside the cylinder surrounded by the second side wall 212, and the body portion 23 is located inside the cylinder surrounded by the first side wall 211, that is, the vertical distance from the groove bottom wall 213 of the body portion 23 is smaller than the vertical height L2 of the second side wall 212.

Referring to fig. 4, the heating tube assembly 1 includes a heating portion, the heating portion is located in a groove of the groove portion 21, the heating portion includes a first wall 101, a second wall 102, a third wall 103 and a fourth wall 104, the first wall 101 and the second wall 102 are formed by extending upward from two ends of the third wall 103, the fourth wall 104 is located above the third wall 103, one end of the fourth wall 104 is connected to the first wall 101, and the other end of the fourth wall 104 is connected to the second wall 102. The first wall 101 is opposite to the first sidewall 211 and is welded and fixed, and the third wall 103 is welded and fixed to the groove bottom wall 213, i.e., the heater tube assembly 1 conducts heat to the heater plate 2 through the first wall 101 and the third wall 103. The distance between the second wall 102 and the second side wall 212 can reduce the amount of heat transferred from the heat pipe assembly 1 to the second side wall 212, which can increase the life of the seal at the end of the second side wall 212 remote from the bottom wall 213 of the groove.

Referring to fig. 2 and 3, the heating device 10 includes a first wire connecting rod 51 and a second wire connecting rod 52, the tube assembly 1 includes a first lead rod 11 and a second lead rod 12, and the first lead rod 11 and the second lead rod 12 are located at two ends of the tube assembly 1. The first lead bar 11 is fixed to one end of the first wire connecting rod 51 by welding, and the first lead bar 11 and the first wire connecting rod 51 are arranged in a crossed manner at the welding position of the first lead bar 11 and the first wire connecting rod 51, such as the first lead bar 11 and the first wire connecting rod 51 are welded perpendicularly in one embodiment. The first leading bar 11 and the first wire connecting bar 51 are connected in a cross mode, so that the contact resistance of the first leading bar 11 and the first wire connecting bar 51 is reduced, and the risk of breakage of the heating wire caused by distortion generated when the first leading bar 11 is welded can be prevented.

Referring to fig. 4 and 10, the heating apparatus 10 includes a mounting member 3, the mounting member 3 is located above the body portion 23, the mounting member 3 shields at least a part of the body portion 23, the mounting member 3 shields a part of the heating pipe assembly 1, the mounting member 3 is located in the cylindrical body surrounded by the second side wall 212, a vertical distance between an upper end surface of the mounting member 3 and the bottom wall 213 of the groove is L3, and L3 is smaller than L2. The portion of the tube assembly 1 located between the mounting member 3 and the bottom wall 213 of the groove, the mounting member 3 and the body portion 23 can be welded, the mounting member 3 and the fourth wall 104 can be welded, and the outer peripheral edge of the mounting member 3 is spaced from the second side wall 212, so that the amount of heat transferred from the mounting member 3 to the second side wall 212 can be reduced. The mounting member 3 is a heat conducting material, on one hand, the temperature of the heating pipe assembly 1 can be transferred to the first mounting device 41 and the second mounting device 42, on the other hand, the mounting member 3 shields part of the heating pipe assembly 1, the mounting member 3 is in contact with the fourth wall 104, the heat of the fourth wall 104 can be transferred to the body part 3 through the mounting member 3, the utilization rate of the heat is improved, in addition, the first mounting device 41 and the second mounting device 42 can be closer to the heating pipe assembly 1, and the control accuracy of the first mounting device 41 and the second mounting device 42 is improved. With continued reference to fig. 2, the heating device 10 includes a first safety device 41 and a second safety device 42, the first safety device 41 and the second safety device 42 are fixedly connected to the mounting member 3, for example, they may be screwed or snap-fitted, the first safety device 41 and the second safety device 42 are located on a side of the mounting member 3 opposite to the body portion 23, and portions of the first safety device 41 and the second safety device 42 are located above the heating tube assembly 1, so as to improve the control accuracy of the first mounting device 41 and the second mounting device 42.

The first safety device 41 may be a thermostat, which may be reusable, and the second safety device 42 may be a fuse. First safety device 41 and second safety device 42 set up side by side, and the minimum distance between first safety device 41 and the second safety device 42 is more than or equal to 6mm, namely the minimum distance between first safety device 41 and the second safety device 42 is D, the value of D is more than or equal to 6mm, if D can take 8mm, 10mm, 12mm etc., can change the distance according to the size of specific heating plate and specific use needs, make first safety device 41 and second safety device 42 have certain minimum distance, this minimum distance is first safety device 41 and second safety device 42's safe distance, reduced first safety device 41 and second safety device 42 short circuit's possibility, improved heating device 10's security.

Referring to fig. 6, 7 and 11, the first safety device 41 includes a first main body portion 410, at least a portion of the first main body portion 410 contacts the mounting member 3, the first main body portion 410 includes an extending portion 411, the extending portion 411 extends from the first safety device 41 in a direction away from the second safety device 42, and the extending portion 411 has a first through hole 4111. The mounting member 3 includes a first fixing member 31, one end of the first fixing member 31 is fixedly connected with the mounting member 3, such as welding, riveting, etc., or the first fixing member 31 and the mounting member 3 are integrally formed, etc., the other end of the first fixing member 31 extends towards the direction far away from the heating pipe assembly 1, the first fixing member 31 is matched with the first through hole 4111, the first fixing member 31 is partially located in the first through hole 4111, the first fixing member 31 has an external thread, and is provided with a nut matched with the first fixing member 31, so that the extending portion 411 is fixed between the nut matched with the first fixing member 31 and the mounting member 3, namely, the first safety device 41 and the mounting member 3 are fixed through a screw joint, the connection stability between the first safety device 41 and the mounting member 3 is improved, meanwhile, the first safety device 41 is convenient to replace, and the maintenance cost is reduced.

The side of the mounting member 3 facing away from the body portion 23 may be a flat side so that the mounting member 3 and the first security device 4 are in closer contact. The face that extension 411 and installed part 3 contacted is the plane for both contact are inseparabler when installed part 3 and extension 411 pass through the spiro union, and installed part 3 adopts aluminium or aluminum alloy material to make, and is with low costs and heat conductivity is good. Above setting up, increased the heat conduction efficiency of installed part 3 to first safety device 4, improved the accuracy that first safety device 4 detected. The second security device 42 is connected to the mounting member 3 in the same manner as described above and will not be described in detail. In another embodiment, the extending direction of the extending portion 411 of the first safety device 41 is opposite to the extending direction of the extending portion 411 of the second safety device 42, so that the structure is compact and the occupied space is small while a certain distance is kept between the first safety device 41 and the second safety device 42.

Referring to fig. 2 and 8, one end of the first wire rod 51 is connected to the first lead bar 11, and the other end of the first wire rod 51 is fixedly connected to the first safety device 41. The first safety device 41 comprises a first connection terminal 412, the second safety device 42 comprises a second connection terminal 421, and the first connection terminal 412 is fixed to the first wire rod 51 in a welding manner, so that the first wire rod 11 and the first safety device 41 are electrically connected through the first wire rod 51; one end of the second wire connecting rod 52 is fixed to the second lead rod 12 by welding, the other end of the second wire connecting rod 52 is fixed to the second wire connecting terminal 421 by welding, so that the second lead rod 12 and the second wire connecting terminal 421 are electrically connected by the second wire connecting rod 52, the first wire connecting terminal 412 is fixed to the first base 413, the first wire connecting terminal 412 is located above the first base 413 and in the middle of the first base 413, the first base 413 is close to one side of the second safety device 42 and is spaced from one side of the first wire connecting terminal 412 close to the second safety device 42, so that the distance between the first wire connecting terminal 412 and the second wire connecting terminal 421 is greater than the distance between the first base 413 and the second base 422, such as in some embodiments, the distance between the first wire connecting terminal 412 and the second wire connecting terminal 421 is greater than 8mm, and the safety of the heating device 10 is improved.

The first terminal 412 includes a wavy portion 4121, and one end of the first terminal bar 51 is fixed by welding to the wavy portion 4121. The wavy portion 4121 includes a plurality of peak portions 4122 and valley portions 4123, and the peak portions 4122 and the valley portions 4123 are alternately arranged. The first wire rod 51 is welded to the first terminal 412 by fusion welding, and the first wire rod 51 is welded to the first terminal 412 at the peak portion 4122, so that the resistance of the connection between the first wire rod 51 and the first terminal 412 can be reduced, and the heating efficiency can be improved. The angle between the direction of the connecting portion of the first wire bar 51 and the first wire terminal 412 and the longitudinal direction of the peak portion 4122 is 75 to 105 degrees, and as the first wire bar 51 and the peak portion 4122, the first wire bar 51 and the plurality of peak portions 4122 are in point contact before welding, so that the contact area of the first wire bar 51 and the plurality of peak portions 4122 after welding is small, the contact resistance is reduced, and the heating efficiency is improved.

Referring to fig. 5 and 12, the heating device 10 includes a cover plate 6, a portion of the cover plate 6 is located above the mounting member 3, the cover plate 6 covers a portion of the mounting member 3, and a portion of the cover plate 6 is located above the outer peripheral portion 22, so that a distance is maintained between the cover plate 6 and the mounting member 3, heat directly transferred from the mounting member 3 to the cover plate 6 is reduced, heat utilization rate is improved, possibility of scalding due to overheating of the mounting member 3 is reduced, and safety of the heating device 10 is improved.

The cover 6 abuts against the outer peripheral portion 22, the outer peripheral portion 22 supports the cover 6, the cover 6 has a second through hole 61, the mounting member 3 includes a second fixing member 32, one end of the second fixing member 32 is fixedly connected to the mounting member 3, such as welded, riveted or integrally formed with the mounting member 3, and the other end of the second fixing member 32 extends in a direction away from the body portion 23 in the axial direction of the body portion 23. Second mounting 32 and second through-hole 6 looks adaptation, second mounting 32 part are located second through-hole 61, and second mounting 32 is equipped with the screw thread, is equipped with the nut with second mounting 32 complex for apron 6 is fixed in with second mounting 32 complex nut and installed part 3 between, and apron 6 and installed part 3 pass through the spiro union fixed promptly, have improved the stability that apron 6 is connected.

In some embodiments, the extension 411 and the mounting member 3 are welded, and during the welding process, the part of the extension 411 farthest from the safety device 4 and the mounting member 3 are welded, so that the damage to parts in the safety device 4 caused by the welding process is reduced, and the connection stability between the extension 411 and the mounting member 3 is improved. In another embodiment, the extending direction of the extending portion 411 of the first safety device 41 is opposite to the extending direction of the extending portion 411 of the second safety device 42, so that the structure is compact and the occupied space is small while a certain distance is kept between the first safety device 41 and the second safety device 42. The first wire connecting rod 51 and the first leading rod 11 are welded through fusion welding, namely, high temperature is generated at the joint of the first wire connecting rod 51 and the first leading rod 11 under high current, so that molten liquid of the first wire connecting rod 51 and the first leading rod 11 is mixed and then condensed, solder is not used in the welding process, the resistance between the first wire connecting rod 51 and the first leading rod 11 is reduced in the fusion welding mode, the heating efficiency is improved, and the welding mode of the second wire connecting rod 52 and the first leading rod 12 is the same as that of the first wire connecting rod 51 and the first leading rod 12, and therefore the description is omitted.

The first wire bar 51 is welded with the first wire terminal 412 at the crest portion 4122, the connecting portion of the first wire bar 51 and the first wire terminal 412 is located above the crest portion 4122, the direction of the connecting portion of the first wire bar 51 and the first wire terminal 412 is the same as the length direction of the crest portion 4122, the first wire bar 51 and the crest portion 4122 are in line contact before welding, the contact area of the first wire bar 51 and the crest portion 4122 after welding is increased, and the stability of connection of the first wire bar 51 and the first wire terminal 412 is improved.

In some embodiments, as shown in fig. 5 and 12, the cover plate 6 further includes a clamping portion 62, one end of the clamping portion 62 is fixedly connected to the wall of the second through hole 61, the other end of the clamping portion 62 has a notch 621, the notch 621 includes two leg portions, and a notch is formed between the two leg portions. The second fixing member 32 is provided with a thread groove, a quincunx groove or other form of limiting groove. The clamping portion 62 protrudes out of the cover plate main body, a part of the second fixing member 32 is located in the notch, and the leg portion is abutted against the limiting groove, so that the cover plate 6 is fixed with the second fixing member 32. The thread groove can also be other types of grooves matched with the notch part 621, the opening of the notch part 621 is in a V shape or an arc shape, the notch part 621 is clamped with the wall of the groove, and the stability of the cover plate 6 is improved. In this embodiment, the second fixing member 32 is a stud, and the cover plate can be further fixed by a nut.

In other embodiments, the first wire bar 51 is welded to the first wire terminal 412 at the peak portion 4122, the connecting portion of the first wire bar 51 and the first wire terminal 412 is located at the valley portion 4123, that is, the connecting portion of the first wire bar 51 and the first wire terminal 412 is located between two adjacent peak portions 4122, the first wire bar 51 is in contact with the peak portions 4122 and the valley portions 4123, the first wire bar 51 is in surface contact with the wavy portion 4121 before welding, the contact area of the first wire bar 51 and the wavy portion 4121 after welding is increased, and the stability of connection of the first wire bar 51 and the first wire terminal 412 is improved.

The pump of the embodiment of the present application includes the heating device 10, the pump housing 7, the impeller, and the motor 8 of the above embodiment. The pump case 7 has a pump cavity, a water outlet and a water inlet, the pump case 7 is a barrel with openings at two ends, a heating device 10 is fixed at one end of the pump case 7, a motor 8 is fixed at the other end of the pump case 7, the impeller is arranged in the pump cavity of the pump case 7, the motor 8 drives the impeller to rotate, the water outlet and the water inlet are both connected with the pump cavity, the impeller rotates to drive water to enter the pump cavity from the water inlet, and after the water is heated by the heating device 10, the heated water is discharged through the water outlet.

In the description of the present application, "a plurality" means at least two, e.g., two, three, unless specifically limited otherwise. Reference to the description of the terms "one embodiment," "some embodiments," or "specific 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, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral combinations thereof; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Although embodiments of the present application have been illustrated and described, it is to be understood that the foregoing is only a preferred embodiment of the present application and is not intended to limit the present application in any way, and although the present application has been disclosed in terms of the preferred embodiment, it is not intended to limit the present application, and any person skilled in the art can make any changes or modifications to the equivalent embodiment without departing from the scope of the present application.

Claims (10)

1. A heating device comprising a heating tube assembly (1) and a heating plate (2), the heating plate (2) having a recessed portion (21), the recessed portion (21) having a recess, a portion of the heating tube assembly (1) being received in the recess, characterized in that the heating device (10) comprises a mounting member (3), a first safety device (41) and a second safety device (42), one end of the heating tube assembly (1) being electrically connected to the first safety device (41), the other end of the heating tube assembly (1) being electrically connected to the second safety device (42);

the heating plate (2) comprises a body part (23), the groove part (21) is sunken in the body part (23), the mounting part (3) is fixedly connected with the body part (23), the first safety device (41) comprises a first main body part (410) and a first base part (413), the second safety device (42) comprises a second main body part (420) and a second base part (422), at least one part of the first main body part (410) is fixedly connected with the mounting part (3) at one side of the mounting part (3) opposite to the body part (23), and at least one part of the second main body part (420) is fixedly connected with the mounting part (3),

wherein the first base (413) is fixedly connected with the first body part (410), the second base (422) is fixedly connected with the second body part (420), and the distance between the first base (413) and the second base (422) is greater than or equal to 6 mm.

2. The heating device according to claim 1, wherein the distance between the first base (413) and the second base (422) is between 8mm and 12 mm.

3. The heating device according to claim 1 or 2, wherein the first body part (410) comprises an extension (411), the extension (411) is welded or screwed to the mounting part (3), the extension (411) and the second safety device (42) are located on the same side of the first base (413), or the extension (411) and the second safety device (42) are located on both sides of the first base (413).

4. A heating device according to claim 3, wherein the extension part (411) has a first through hole (4111), the mounting part (3) comprises a first fixing part (31), the first fixing part (31) corresponds to the first through hole (4111), the first fixing part (31) is partially located in the first through hole (4111), the first fixing part (31) is provided with an external thread, and the extension part (411) is fixed between the mounting part (3) and a nut cooperating with the first fixing part (31).

5. The heating device according to claim 1, wherein the groove portion (21) comprises a groove bottom wall (213) and a first side wall (211), one end of the first side wall (211) is connected to the groove bottom wall (213), the other end of the first side wall (211) is connected to the body portion (23), the heater tube assembly (1) comprises a heating portion, the heating portion is located in the groove, the heating portion comprises a first wall (101) and a third wall (103), the first wall (101) and the first side wall (211) are welded and fixed, and the third wall (103) and the groove bottom wall (213) are welded and fixed.

6. The heating device according to claim 5, wherein the groove portion (21) further includes a second side wall (212), the second side wall (212) being farther from the body portion (23) than the first side wall (211), the heating portion includes a second wall (102), the second wall (102) and the second side wall (212) are partially opposed, and the second wall (102) and the second side wall (212) are held at a distance, the attachment member (3) being held at a distance from the second side wall.

7. A heating device according to claim 1 or 2, characterized in that the heating device (10) comprises a cover plate (6), that the cover plate (6) is fixedly connected with the hotplate (2), that at least part of the mounting (3) is located between the body part (23) and the cover plate (6), and that the cover plate (6) and the mounting (3) are kept at a distance, and that the cover plate (6) covers part of the hotplate (2) and part of the mounting (3).

8. The heating device according to claim 7, wherein the cover plate (6) has a plurality of second through holes (61), the mounting member (3) comprises a plurality of second fixing members (32), the second through holes (61) correspond to the second fixing members (32), the second fixing members (32) are partially located in the second through holes (61), and the second fixing members (32) are provided with external threads.

9. The heating device according to claim 8, wherein the cover plate (6) further comprises a clamping portion (62), one end of the clamping portion (62) is fixedly connected with the wall of the second through hole (61), the other end of the clamping portion (62) is provided with a notch portion (621), the notch portion (621) is triangular or arc-shaped, the notch portion (621) abuts against the second fixing member (32), and the notch portion (621) is partially located in a thread groove of the external thread.

10. A pump, comprising a pump casing (7), a motor (8) and an impeller, characterized by further comprising a heating device (10) according to any one of claims 1 to 9, wherein the heating device (10) is fixed at one end of the pump casing (7), the motor (8) is fixed at the other end of the pump casing (7), the pump casing (7) is further provided with a pump cavity, the impeller is accommodated in the pump cavity, and the motor (8) drives the impeller to rotate.

Images