CN215127303U - Heating disc assembly and liquid heating device - Google Patents

Abstract

The application provides a heating coil subassembly and liquid heating device, wherein, the heating coil subassembly is including heating coil, heating tube and PTC subassembly, and heating tube and PTC subassembly set up in the homonymy of heating coil, and the cold needle and the PTC subassembly of heating tube set up respectively in the radial both ends of heating coil. The application provides a heating disc subassembly and liquid heating device can avoid the cold needle position of PTC subassembly and heating tube too closely and easily take place the short circuit, also makes the PTC subassembly have bigger installation space simultaneously, the equipment of being convenient for.

Description

Heating disc assembly and liquid heating device

Technical Field

The application relates to the technical field of household appliances, in particular to a heating plate assembly and a liquid heating device.

Background

With the development of electric kettle technology, people have higher and higher requirements on the kettle, such as increasing heat preservation in the electric kettle. There are many insulation schemes on the market, such as adding PTC at the bottom of the kettle body to perform continuous low-power heating. However, the PTC in the existing kettle is usually assembled near the cold needle at the front end of the heating plate, the force of screwing the screw is easy to cause the PTC to move left and right in the screw locking process, the PTC is very close to the cold needle of the heating plate in the assembling process, the safety risk of electrical short circuit of the kettle occurs, and the assembly is inconvenient due to the interference effect of the cold needle.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a dish subassembly and liquid heating device generate heat to solve among the above-mentioned prior art PTC and cold needle position near and lead to PTC to be difficult to assemble and easily take place the problem of electrical short circuit.

The first aspect of the application provides a heating plate assembly, which comprises a heating plate, a heating tube and a PTC assembly, wherein the heating tube and the PTC assembly are both arranged on the heating plate, and the heating tube is provided with two cold needles; the PTC component is arranged on the periphery of the heating tube, and the distances between the PTC component and the two cold needles are unequal; or the PTC component is arranged on one side of the heating tube, which is symmetrical to the two cold needles, and the distance between the PTC component and the two cold needles is equal.

The application provides a heating disc subassembly can avoid the short circuit easily to take place for the cold needle position of PTC subassembly and heating tube is too close, also makes the PTC subassembly have bigger installation space simultaneously, the equipment of being convenient for.

In one possible design, a groove is arranged on the heating plate, and the PTC component is fixed in the groove. Therefore, the PTC component can be limited through the groove, and the PTC component is prevented from shaking.

In one possible design, the PTC assembly comprises a PTC heating module and a pressing piece, one side of the PTC heating module is fixed to the groove, and the pressing piece abuts against one side of the PTC heating module away from the groove. The pressing sheet can avoid the damage of the PTC heating module caused by the direct pressing of structural components between the bottom cover and the heating plate on the PTC heating module.

In one possible design, a limit structure is arranged on the pressing sheet and abuts against the side wall surface of the PTC heating module. Thereby realize spacing to PTC heating module, prevent to rock.

In one possible design, the limiting structure is provided in plurality in the circumferential direction of the pressing sheet. Therefore, the limitation can be realized in the circumferential direction of the PTC heating module, and the stability of the installation and fixation of the PTC heating module is further ensured.

In one possible design, the PTC assembly further comprises a slip prevention member fixed to the pressing sheet. The anti-skid piece has an anti-skid effect, can prevent the structural component between the heating plate and the bottom cover and the PTC component from sliding relatively, and ensures the stability of the PTC component after installation.

In one possible design, a boss is formed on the pressing sheet, and the anti-slip piece is fixedly sleeved on the boss. Thereby being convenient for the assembly of the anti-skid piece and the pressing piece.

In one possible design, the anti-slip member is made of elastic anti-slip material, a concave pit is arranged on the anti-slip member, and the anti-slip member is fixedly sleeved on the boss through the concave pit. So that the concave pits can be reliably sleeved on the lug boss through proper elastic deformation of the anti-skid piece.

In a possible design, the heating plate further comprises a temperature controller, the temperature controller is fixed on the heating plate, and a fixing column is arranged on the temperature controller and abuts against the PTC component. When the temperature controller is installed at the set position of the heating plate, the fixing column can be pressed on the PTC component, so that the PTC component is fixedly installed.

In one possible embodiment, the fixing post is provided with a threaded hole. The threaded hole is used for penetrating through connecting pieces such as screws and bolts to enable the fixing column to be reliably pressed on the PTC component through the fastening force of the connecting pieces, and the stability of installation and fixation of the PTC component is further guaranteed.

The second aspect of this application still provides a liquid heating device, and it includes kettle body subassembly, wherein, liquid heating device still includes the heating disc subassembly that this first aspect of this application provided, the heating disc subassembly set up in the bottom of kettle body subassembly.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic structural diagram (one) of a liquid heating apparatus provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram (ii) of a liquid heating apparatus provided in the embodiment of the present application;

FIG. 3 is a schematic structural view of a heat generating disc assembly;

FIG. 4 is a partial cross-sectional view of a liquid heating apparatus provided in accordance with an embodiment of the present application;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a schematic view of the structure of the tablet;

fig. 7 is a schematic structural view of the PTC heating module.

Reference numerals:

1-a kettle body assembly;

11-a kettle body;

12-pot lid;

13-a handle assembly;

14-a bottom cover;

15-power base;

2-a heat generating disc assembly;

21-a heating plate;

211-grooves;

22-a PTC component;

221-a PTC heating module;

2211-side wall face;

222-tabletting;

2221-boss;

2222-a limit structure;

223-anti-slip means;

23-a heating tube;

231-cold needle;

3-temperature controller;

31-fixed column;

311-threaded hole.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, unless explicitly stated or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In the description of the present application, it should be understood that the terms "upper" and "lower" used in the description of the embodiments of the present application are used in a descriptive sense only and not for purposes of limitation. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

As shown in fig. 1 to 7, the present application provides a heating plate assembly and a liquid heating device, the liquid heating device may be an electric kettle, a teapot, a health preserving kettle, etc., in the present application, the electric kettle is preferably taken as an example for description. The heating disc assembly is applied to the liquid heating device, and particularly can be assembled at the bottom of the liquid heating device to heat and preserve heat of liquid in the liquid heating device.

The liquid heating device comprises a kettle body component 1, and the heating disc component 2 is arranged at the bottom of the kettle body component 1. The kettle body assembly 1 can comprise a kettle body 11, a kettle cover 12 and a bottom cover 14, wherein the kettle body is provided with a handle assembly 13, the handle assembly 13 can facilitate the movement of the liquid heating device, the kettle cover 12 is arranged at the upper opening part of the kettle body 11, and the bottom cover 14 is arranged at the bottom of the kettle body 11 so as to seal the heating plate assembly 2 in the kettle body 11. The bottom cover 14 can be placed on the power base 15 to supply power to the heating plate assembly 2 through the power base 15, and further heating of liquid in the kettle is achieved.

The heating plate assembly 2 is arranged at the bottom of the kettle body assembly 1, wherein the heating plate assembly 2 comprises a heating plate 21, a heating tube 23 and a PTC assembly 22, the heating tube 23 and the PTC assembly 22 are both arranged on the heating plate 21 and can be positioned at the same side of the heating plate 21, and the heating tube 23 is provided with two cold needles 231.

It can be understood that the PTC component 22 has the advantages of low thermal resistance and high heat exchange efficiency, is an automatic constant temperature and power-saving heating mechanism, and can realize the effect of keeping the temperature of the liquid in the kettle. When the PTC module 22 is installed, if the installation position of the PTC module 22 is close to the cold pin 231 of the heat-generating tube 23 due to the limited installation space on the heat-generating plate 21, the PTC module 22 is likely to contact the cold pin 231 after installation, which may cause short circuit during operation.

For this reason, in this embodiment, the PTC assembly 22 may be installed on the circumferential side of the heat generating tube 23 in one installation manner, and the distances between the PTC assembly 22 and the two cold pins 231 are not equal. It can be understood that the heating tube 23 is in a non-closed ring shape, the cold pins 231 are disposed at both ends of the heating tube, and the PTC component 22 may be disposed at an outer side or an inner side of the heating tube in a circumferential direction, instead of between the two cold pins 231, and may be respectively maintained at unequal distances from the two cold pins 231, so that interference of the cold pins 231 when the PTC component 22 is installed may be avoided.

In another installation manner, the PTC assembly 22 may be installed on one side of the heat generating pipe 23 that is symmetrical to the two cold pins 231, and the PTC assembly 22 is equidistant from the two cold pins 231. It will be appreciated that the PTC assembly 22 is located on the opposite side of the heat generating tube from the two cold pins 231, so that the PTC assembly 22 can be maintained at the farthest distance from the two cold pins 231, and thus the assembly of the PTC assembly 22 can be facilitated.

Therefore, compared with the prior art, the heating disc assembly provided by the embodiment of the application can avoid short circuit easily caused by the fact that the PTC assembly 22 is too close to the cold pin 231 of the heating tube 23 on the one hand, and also enables the PTC assembly 22 to have a larger installation space on the other hand, so that the assembly is convenient.

As a specific implementation manner, the heat generating plate 21 is provided with a groove 211, and the PTC assembly 22 is fixed to the groove 211. The size of this recess 211 and PTC subassembly 22 looks adaptation, after PTC subassembly 22 installed to recess 211, the marginal and the inside wall laminating of recess 211 of PTC subassembly 22 or keep having slight clearance to can realize spacing to PTC subassembly 22 through recess 211, prevent that PTC subassembly 22 from rocking.

The shape of the recess 211 may be circular, square, polygonal, etc., and may be determined according to the contour shape of the PTC assembly 22. In this embodiment, the recess 211 is preferably rectangular in shape, as shown in fig. 3, to accommodate the PTC assembly 22 having a rectangular parallelepiped profile.

As a specific implementation, as shown in fig. 2, 4 and 5, the PTC assembly 22 includes a PTC heating module 221 and a pressing piece 222, one side of the PTC heating module 221 is fixed to the recess 211, and the pressing piece 222 abuts against one side of the PTC heating module 221 away from the recess 211. The PTC heating module 221 may be a positive temperature coefficient heat sensitive material.

It can be understood that the PTC assembly 22 is integrated with the bottom of the liquid heating device and is enclosed inside the kettle body 11 by the bottom cover 14, i.e. the PTC assembly 22 is fixed between the heat generating plate 21 and the bottom cover 14, and in particular can be clamped and fixed by the structural components between the bottom cover 14 and the heat generating plate 21. The structural components between the bottom cover 14 and the heating plate 21 can be directly pressed on the pressing sheet 222, and the PTC heating module 221 is pressed in the groove 211 through the pressing sheet 222, so that the structural components between the bottom cover 14 and the heating plate 21 can be prevented from being directly pressed on the PTC heating module 221 to cause damage to the PTC heating module 221.

As a specific implementation manner, as shown in fig. 5 to 7, the pressing sheet 222 is provided with a limit structure 2222, and the limit structure 2222 abuts against the side wall surface 2211 of the PTC heating module 221.

The position of the limiting structure 2222 at the edge of the pressing sheet 222 is bent by a certain angle, preferably by 90 ° in this embodiment, after the pressing sheet 222 is pressed against the surface of the PTC heating module 221 away from the groove 211, the bent limiting structure 2222 can be abutted against the side wall 2211 of the PTC heating module 221, so as to limit the PTC heating module 221 and prevent shaking.

Specifically, the limiting structure 2222 may be provided in plurality in the circumferential direction of the pressing sheet 222, so that the limiting in the circumferential direction of the PTC heating module 221 can be achieved, and the stability of the mounting and fixing of the PTC heating module 221 can be further ensured.

As a specific implementation, as shown in fig. 2, 4, 5 and 6, the PTC assembly 22 further includes a slip prevention member 223, and the slip prevention member 223 is fixed to the pressing sheet 222. When the PTC component 22 is assembled in the liquid heating apparatus, the PTC heating module 221 may be first installed in the groove 211 of the heating plate 21, the pressing plate 222 may be installed in the PTC heating module 221, and then the anti-slip member 223 may be fixed to the pressing plate 222, so that the structural component between the heating plate 21 and the bottom cover 14 is directly pressed on the anti-slip member 223, and the anti-slip member 223 has an anti-slip function, so as to prevent the structural component between the heating plate 21 and the bottom cover 14 from sliding relative to the PTC component 22, thereby ensuring the stability of the PTC component 22 after installation.

Wherein, this antiskid 223 can be elasticity anti-skidding material, specifically can be rubber sleeve, silica gel cover etc. preferably the silica gel cover in this embodiment, and it has better anti-skidding effect.

As a specific implementation manner, as shown in fig. 4 and 5, a boss 2221 may be formed on the pressing piece 222, and the anti-slip member 223 is fixedly sleeved on the boss 2221. The projection 2221 protrudes in a direction away from the groove 211, and the anti-slip member 223 can be sleeved on the projection 2221, so that the assembly of the anti-slip member 223 and the pressing plate 222 can be facilitated. The shape of the boss 2221 may be a circle, a square, or a polygon, which is not limited in this embodiment.

Wherein, the anti-slip member 223 can be provided with a concave pit, and the anti-slip member 223 is fixedly sleeved on the boss 2221 through the concave pit. It is understood that the concave pit is a concave structure, the shape of the concave pit can be matched with the shape of the boss 2221, in this embodiment, the shape of the boss 2221 is preferably circular, and the shape of the concave pit is also circular, wherein the diameter of the concave pit is smaller than or equal to the diameter of the boss 2221, so that the concave pit can be reliably sleeved on the boss 2221 through appropriate elastic deformation of the anti-slip member 223.

As a specific implementation manner, as shown in fig. 2, 4 and 5, the liquid heating apparatus further includes a temperature controller 3, the temperature controller 3 is fixed on the heating plate 21, a fixing post 31 is disposed on the temperature controller 3, and the fixing post 31 abuts against the PTC component 22.

When the temperature controller 3 is installed at a set position of the heating plate 21, the fixing posts 31 may be pressed against the PTC assembly 22, thereby achieving the installation and fixation of the PTC assembly 22.

Specifically, as shown in fig. 2, 4 and 5, the fixing post 31 may be provided with a threaded hole 311. After the fixing post 31 is pressed tightly on the PTC component 22, the bottom cover 14 can be fastened to the bottom of the kettle body 11 to seal the temperature controller 3, the PTC component 22 and other components between the bottom cover 14 and the heating plate 21, and then the connecting members such as screws and bolts are inserted into the threaded holes 311 to fixedly connect the temperature controller 3 and the bottom cover 14, and meanwhile, the fixing post 31 can be reliably pressed tightly on the PTC component 22 by the fastening force of the connecting members such as screws and bolts, thereby further ensuring the stability of the installation and fixation of the PTC component 22.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The heating plate assembly is characterized by comprising a heating plate (21), a heating tube (23) and a PTC assembly (22), wherein the heating tube (23) and the PTC assembly (22) are both arranged on the heating plate (21), and the heating tube (23) is provided with two cold needles (231);

the PTC component (22) is arranged on the periphery of the heating tube (23), and the distances between the PTC component (22) and the two cold needles (231) are different; or

The PTC component (22) is arranged on one side of the heating tube (23) which is symmetrical to the two cold needles (231), and the distances between the PTC component (22) and the two cold needles (231) are equal.

2. The heat generating tray assembly according to claim 1, wherein the heat generating tray (21) is provided with a recess (211), and the PTC assembly (22) is fixed to the recess (211).

3. The heat generating tray assembly according to claim 2, wherein the PTC assembly (22) comprises a PTC heating module (221) and a pressing piece (222), one side of the PTC heating module (221) is fixed to the recess (211), and the pressing piece (222) abuts against one side of the PTC heating module (221) away from the recess (211).

4. The heater tray assembly as claimed in claim 3, wherein the pressing sheet (222) is provided with a limiting structure (2222), and the limiting structure (2222) abuts against the side wall surface (2211) of the PTC heater module (221).

5. The heater tray assembly according to claim 4, wherein the position-limiting structure (2222) is provided in plurality in the circumferential direction of the pressing piece (222).

6. The heater tray assembly according to claim 3, wherein the PTC assembly (22) further comprises a slip prevention member (223), the slip prevention member (223) being fixed to the pressing plate (222).

7. The heating plate assembly as claimed in claim 6, wherein the pressing plate (222) is formed with a boss (2221), and the anti-slip member (223) is fixedly sleeved on the boss (2221).

8. The heater tray assembly of claim 7, wherein the anti-slip member (223) is made of an elastic anti-slip material, the anti-slip member (223) is provided with a concave pit, and the anti-slip member (223) is fixedly sleeved on the boss (2221) through the concave pit.

9. The heating tray assembly according to any one of claims 1 to 8, further comprising a temperature controller (3), wherein the temperature controller (3) is fixed on the heating tray (21), the temperature controller (3) is provided with a fixing post (31), and the fixing post (31) abuts against the PTC assembly (22).

10. A liquid heating device comprising a kettle body assembly (1) and further comprising a heating disc assembly (2) as claimed in any one of claims 1 to 9, wherein the heating disc assembly (2) is arranged at the bottom of the kettle body assembly (1).

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