WO2020057117A1

WO2020057117A1 - Ceramic heater

Info

Publication number: WO2020057117A1
Application number: PCT/CN2019/083524
Authority: WO
Inventors: 林孝发; 林孝山; 林山; 徐衍新; 刘祖华
Original assignee: 厦门科牧智能技术有限公司
Priority date: 2018-09-21
Filing date: 2019-04-19
Publication date: 2020-03-26
Also published as: CN209497616U

Abstract

Disclosed is a ceramic heater, comprising: a body, the body having a cavity and an opening for providing access to the cavity; a heating assembly, at least a part of the heating assembly being accommodated in the cavity; a heating assembly pressing cover, the heating assembly pressing cover being connected to an opening end of the body; and a sealing member, a first hole being provided in the sealing member, the heating assembly passing through the first hole, the first hole being in an interference fit with the heating assembly, the sealing member being located between the heating assembly pressing cover and an end face of the opening end of the body, and the sealing member forming a seal between the body and the heating assembly pressing cover by means of the body and the heating assembly pressing cover pressing the sealing member.

Description

Ceramic heater

Technical field

This document relates to, but is not limited to, a ceramic heater.

Background technique

Ceramic heaters are often used in warm water toilets. Existing ceramic heaters include a housing, a fixture, and a ceramic heating plate. The ceramic heating plate is connected to the housing through the fixture, and the ceramic heating plate is located in the housing. The shell and the ceramic heating plate are sealed by a potting agent such as epoxy resin glue. After filling, you need to wait for the glue to dry and solidify before completing the seal. Before the glue is solidified, it is necessary to use a fixed fixture to position the ceramic heating plate, otherwise the position tolerance of the ceramic heating plate cannot be guaranteed after the glue is solidified. Assembling a sealed ceramic heater by way of glue is costly, has a long work cycle, and has a low yield.

Summary of invention

The following is an overview of the topics detailed in this article. This summary is not intended to limit the scope of protection of the claims.

The embodiment of the present application provides a ceramic heater, which aims to form a sealed structure between the ceramic heating sheet and the surrounding shell, so that the ceramic heater can be quickly assembled.

A ceramic heater includes:

A body having a cavity and an opening for entering the cavity;

A heating component, at least a part of which is contained in the cavity;

A heating component gland that is connected to the open end of the body; and

A seal, the seal is provided with a first hole, the heating component passes through the first hole, the first hole is in interference fit with the heating component, and the seal is located on the heating component gland And the end face of the open end of the body, the seal is pressed by the body and the heating component gland, so that the seal forms a seal between the body and the heating component gland.

After reading and understanding the summary of the drawings and the embodiments of the present application, other aspects can be understood.

Overview of the drawings

FIG. 1 is a schematic cross-sectional view of a ceramic heater according to an embodiment of the present application.

FIG. 2 shows an enlarged schematic view of the area A in FIG. 1.

FIG. 3 is a schematic structural view of a body of a ceramic heater according to an embodiment of the present application.

FIG. 4 is a schematic structural diagram of a heating assembly of a ceramic heater according to an embodiment of the present application.

FIG. 5 is a schematic structural diagram of a seal of a ceramic heater according to an embodiment of the present application.

FIG. 6 is a schematic structural diagram of a seal gland of a ceramic heater according to an embodiment of the present application.

FIG. 7 is a schematic structural diagram of a gland of a heating assembly of a ceramic heater according to an embodiment of the present application.

Reference sign description

1 body 11 opening 12 first mounting hole 13 first sealing strip 14 rib 141 convex portion 15 end surface 16 cavity 17 limiting portion

2 heating unit 21 ceramic heating sheet 22 connection

3 seal 31 first hole 32 first mating portion 321 first inclined surface 33 groove

4 Seal gland 41 Second hole 42 Second mating part 42 Second bevel 43 Second seal

5 Gland for heating unit 51 Second mounting hole 52 Groove 53 Supporting part

X length direction Y width direction Z height direction.

Elaborate

Exemplary embodiments of the present application will be described below with reference to the drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the application, but not to exhaust all feasible ways of the application, nor to limit the protection scope of the application.

Unless otherwise specified, the X direction in the following description refers to the length direction of the ceramic heater, the Y direction refers to the width direction of the ceramic heater, and the Z direction refers to the height direction of the ceramic heater.

As shown in FIG. 1 to FIG. 7, a ceramic heater is provided in an embodiment of the present application, which includes a body 1, a heating component 2, a seal 3, a seal gland 4, and a heating component gland 5.

As shown in FIGS. 1 and 3, the body 1 has a cavity 16 that can accommodate at least a portion of the heating assembly 2 and an opening 11 that can fit the heating assembly 2 into the cavity 16. A plurality of first mounting holes 12 are provided around the opening 11, for example, four, and the first mounting holes 12 are used to install the heating component gland 5. Viewed along the length direction X, the first sealing strip 13 is arranged around the opening 11, and the first sealing strip 13 protrudes from the end surface 15 of the body 1. The seal 3 is deformed by pressing the first sealing strip 13, so that a seal is formed between the seal 3 and the body 1. In some examples, a first weather strip 13 is provided between the opening 11 and the first mounting hole 12. The first sealing strip 13 may be disposed on an end surface of the open end of the body 1, and may have a rectangular ring shape.

As shown in FIG. 4, the heating module 2 includes a ceramic heating sheet 21 and a connection portion 22. The heating assembly 2 may include a plurality of flat ceramic heating sheets 21, for example, two. The ceramic heating fins 21 may be connected to each other through a connecting portion 22, and the connecting portion 22 has a wire. The ceramic heating sheet 21 is provided with extended heating wires therein, for example, heating wires extending in the longitudinal direction X, and a plurality of heating wires are arranged in parallel in the width direction Y.

The inner wall of the cavity 16 is provided with ribs 14 for positioning the heating component 2. The ribs 14 may be located on both sides of the ceramic heating sheet 21 in the width direction Y and / or the height direction Z. In some examples, each ceramic heating plate 21 may be positioned correspondingly to a plurality of, for example, four ribs. The rib 14 is provided with a convex portion 141, and the convex portion 141 is located at an end of the rib 14 away from the opening 11 in the longitudinal direction X. The convex portion 141 is engaged with the ceramic heating sheet 21 to position the end of the ceramic heating sheet 21 in the longitudinal direction X away from the opening 11, so that the ceramic heating sheet 21 is positioned in the cavity 16.

It can be understood that the ribs 14 can ensure that the ceramic heating plate 21 is filled into the cavity 16 perpendicularly to the opening 11, and the gap between the ceramic heating plate 21 in the cavity 16 and the inner wall of the surrounding cavity is kept uniform, thereby ensuring that Heating consistency.

In some examples, the body 1 may be made of a plastic material, and the ribs 14 may be installed in an area between two adjacent heating wires corresponding to the ceramic heating sheet 21, thereby preventing the heating wires from generating heat directly to the ribs 14 Heating to avoid hot melt deformation of the ribs 14.

A limiting portion 17 is provided at the bottom of the cavity 16, and the limiting portion 17 protrudes from the bottom of the cavity 16 toward the opening 11. The ceramic heating plate 21 can abut against the limiting portion 17, thereby preventing the ceramic heating plate 21 and the cavity 16. The bottom contact. It can be understood that the limiting portion 17 corresponds to a region between two adjacent heating wires of the ceramic heating sheet 21, so as to prevent the heating wire from generating heat to cause the hot melt deformation of the limiting portion 17.

As shown in FIG. 1, FIG. 2 and FIG. 5, the sealing member 3 may be a rectangular plate. The sealing member 3 is provided with a first hole 31, and the ceramic heating sheet 21 may pass through the first hole 31. The first hole 31 and the ceramic The heating plate 21 is interference-fitted, thereby achieving sealing. In some examples, two first holes 31 may be provided, and two ceramic heating sheets 21 may pass through the corresponding first holes 31 respectively. The seal 3 may be made of an elastic sealing material, such as silicone. An interference fit between the first hole 31 and the ceramic heating plate 21 forms a seal between the ceramic heating plate 21 and the sealing member 3.

As shown in FIGS. 1, 2 and 6, the seal gland 4 may be a rectangular plate. The seal gland 4 is provided with a second hole 41, and the ceramic heating sheet 21 may pass through the second hole 41. The hole 41 fits with the ceramic heating plate 21 in a gap. In some examples, two second holes 41 may be provided, and two ceramic heating sheets 21 may pass through the corresponding second holes 41 respectively.

The shape of the seal 3 and the seal gland 4 correspond. The seal 3 and the seal gland 4 can have the same size in the width direction Y and the height direction Z. The seal 3 and the seal gland 4 can be stacked Completely coincide, and the first hole 31 and the second hole 41 are opposed.

The sealing member gland 4 is provided with a second sealing strip 43, the second sealing strip 43 protrudes toward the sealing member 3, and the second sealing strip 43 is arranged around the second hole 41. The seal 3 is pressed by the second sealing strip 43 to seal between the seal 3 and the seal gland 4. In some examples, a second sealing strip 43 may be provided around each of the two second holes 41, and portions of the two second sealing strips 43 between the second holes 41 may overlap, or may not be overlapping. In other examples, one second sealing strip 43 may be provided, and the second sealing strip 43 may surround the two second holes 41 at the same time.

As shown in FIGS. 1 and 7, the heating module gland 5 has a groove 52 capable of receiving the seal 3 and the seal gland 4, and the seal 3 and the seal gland 4 are stacked in the groove 52. The seal gland 4 is located at the bottom of the groove 52, and the seal 3 is located at the opening of the groove 52. A support portion 53 is provided in the groove 52, and the support portion 53 is in contact with the seal gland 4. For example, the support portion 53 may be formed by protruding from the bottom and / or the side wall of the groove 52.

The heating component pressing cover 5 covers the side where the opening 11 of the body 1 is located. The heating component pressing cover 5 is provided with second mounting holes 51, for example, four. The first mounting hole 12 and the second mounting hole 51 are opposed to each other. By using fasteners such as screws to pass through the second mounting hole 51 and the first mounting hole 12, the heating module gland 5 and the body 1 can be fixedly connected.

The main body 1 and the heating component gland 5 are fixedly connected, so that the end surface 15 of the body 1 and the support part 53 of the heating component gland 5 press the seal 3 and the seal gland 4 along the longitudinal direction X, and the deformation of the seal 3 The seal between the body 1 and the heating module gland 5 is achieved.

As shown in FIG. 2, the seal 3 and the seal gland 4 are located between the main body 1 and the heating unit gland 5. Under pressure, the seal 3 and the seal gland 4 will also squeeze each other.

The seal 3 is provided with a first mating portion 32, and the first mating portion 32 is disposed around the first hole 31. The seal gland 4 is provided with a second mating portion 42, and the second mating portion 42 is disposed around the second hole 41. As shown in FIG. 1, FIG. 2 and FIG. 6, a first mating portion 32 may be provided around each of the first holes 31, and a second mating portion 42 may be provided around each of the second holes 41. The two mating portions 42 are located inside the second sealing strip 43. The second engaging portion 42 is located on the outer peripheral side of the corresponding first engaging portion 32 away from the ceramic heating sheet 21. The corresponding first mating portion 32 and the second mating portion 42 are interference-fitted in the width direction Y and the height direction Z, so that the first mating portion 32 presses the ceramic heating sheet 21 to form a seal therebetween.

A first inclined surface 321 is provided on the outer peripheral surface of the first mating portion 32. An end of the first inclined surface 321 near the opening 11 is inclined toward the outer peripheral side of the first mating portion 32 away from the ceramic heating sheet 21 and the corresponding second mating portion 42. On the side. A second inclined surface 421 is provided on the inner peripheral surface of the second mating portion 42. An end of the second inclined surface 421 far from the opening 11 is inclined toward the side where the ceramic heating sheet 21 is located and the side where the corresponding first mating portion 32 is located. The first inclined surface 321 It is opposite to the second inclined surface 421. The first mating portion 32 and the second mating portion 42 are in interference fit in the width direction Y and the height direction Z by contacting and squeezing the first inclined surface 321 and the second inclined surface 421. In some examples, the first inclined surface 321 and the second inclined surface 421 may be parallel.

It can be understood that when the heating component cover 5 is fixedly connected to the body 1, as the fastener is gradually tightened, the seal 3 and the seal cover 4 are gradually pressed along the length direction X. During the process of gradually pressing the seal 3 and the seal gland 4 along the length direction X, the first inclined surface 321 and the second inclined surface 421 are partially contacted and completely contacted, and the corresponding first mating portion 32 and the second mating The interference amount of the portion 42 in the width direction Y and the height direction Z gradually increases. That is, by adjusting the tightening degree of the fastener, the interference amount of the first fitting portion 32 and the second fitting portion 42 in the width direction Y and the height direction Z can be adjusted.

As shown in FIG. 2, the first mating portion 32 protrudes toward the seal gland 4, and the seal 3 is provided with a groove 33, which is located on the outer peripheral side of the first mating portion 32 away from the ceramic heating sheet 21. The second mating portion 42 protrudes toward the seal 3, and the second mating portion 42 is embedded in the groove 33, so that the second mating portion 42 can easily press the first mating portion 32.

It should be understood that, in the embodiment of the present application, the sealing member gland 4 may not be provided, but the heating member gland 5 directly abuts and squeezes the sealing member 3, so that the sealing member 3 and the heating assembly 2 are interference fit. seal.

It should be understood that the foregoing specific implementation manners of the present application are only used to exemplarily illustrate or explain the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of this application shall be included in the protection scope of this application. Furthermore, the appended claims are intended to cover all changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundaries.

Claims

A ceramic heater includes:

A body having a cavity and an opening for entering the cavity;

A heating component, at least a part of which is contained in the cavity;

A heating component gland that is connected to the open end of the body; and

A seal, the seal is provided with a first hole, the heating component passes through the first hole, the first hole is in interference fit with the heating component, and the seal is located on the heating component gland And the end face of the open end of the body, the seal is pressed by the body and the heating component gland, so that the seal forms a seal between the body and the heating component gland.
The ceramic heater according to claim 1, wherein the ceramic heater further comprises a seal gland, the seal gland is provided with a second hole, and the heating component passes through the second hole, so that The seal gland is located between the seal and the heating component gland.
The ceramic heater according to claim 2, wherein the second hole is mated with the heating component.
The ceramic heater according to claim 2 or 3, wherein the seal is provided with a first fitting portion, the first fitting portion is provided around the first hole, and the seal gland is provided with a second A fitting portion, the second fitting portion is provided around the second hole, the second fitting portion is located on an outer peripheral side of the first fitting portion away from the heating component, and is pressed by the second fitting portion The first mating portion causes the first mating portion to press the heating component and abut, thereby forming a seal between the first mating portion and the heating component.
The ceramic heater according to claim 4, wherein a first inclined surface is provided on an outer peripheral surface of the first engaging portion, and a second inclined surface is provided on an inner peripheral surface of the second engaging portion, and the first An end of the inclined surface near the opening is inclined away from the heating component, and an end of the second inclined surface remote from the opening is inclined toward the heating component. The first inclined surface and the second inclined surface are opposite to each other. The second inclined surface presses the first inclined surface, so that the second engaging portion presses the first engaging portion.
The ceramic heater according to claim 4 or 5, wherein the first mating portion is convex toward the seal gland, the second mating portion is convex toward the seal, and the seal is provided There is a groove, the groove is located on the outer peripheral side of the first mating portion, and the second mating portion is embedded in the groove.
The ceramic heater according to any one of claims 1 to 6, wherein a rib is provided in the cavity, and the rib is engaged with the heating component, so that the heating component is in the cavity. Positioning in the cavity.
The ceramic heater according to claim 7, wherein the rib is provided with a convex portion, the convex portion is engaged with the heating component, and the convex portion is located away from the space in the longitudinal direction of the rib. Mentioned opening end.
The ceramic heater according to claim 7 or 8, wherein the heating component comprises a ceramic heating sheet, the ceramic heating sheet is provided with a plurality of heating wires extending in a length direction, and the ribs correspond to adjacent ones The area between the two heating wires.
The ceramic heater according to any one of claims 1 to 9, wherein an end surface of the open end of the body is provided with a first weather strip, and the first weather strip protrudes from an end surface of the open end of the body, The first weather strip is arranged around the opening, and the first weather strip is pressed against the seal.
The ceramic heater according to any one of claims 2 to 10, wherein the seal gland is provided with a second sealing strip, the second sealing strip is convex toward the sealing element, and the second A sealing strip is arranged around the second hole, and the second sealing strip is pressed against the seal.
The ceramic heater according to any one of claims 1 to 11, wherein a limiting portion is provided at a bottom of the cavity, and the limiting portion protrudes from the bottom of the cavity toward the opening, so that The heating component can abut against the limiting portion, thereby preventing the heating component from contacting the bottom of the cavity.
The ceramic heater according to any one of claims 1 to 12, wherein the heating component gland has a groove, and the seal is provided in the groove.
The ceramic heater according to claim 13, wherein a support portion is provided in the groove, and the support portion cooperates with the end surface of the open end of the body to squeeze the seal.