CN215581747U

CN215581747U - PTC ceramic heater

Info

Publication number: CN215581747U
Application number: CN202121698821.9U
Authority: CN
Inventors: 谢正仁; 彭卫东; 蒋文斌
Original assignee: Zhongshan Sany Electrical Appliance Co ltd
Current assignee: Zhongshan Sany Electrical Appliance Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-01-18
Anticipated expiration: 2031-07-23

Abstract

The utility model discloses a PTC ceramic heater, which comprises a mounting frame and PTC heating elements, wherein the mounting frame comprises mounting brackets at two ends and mica plates at two sides, the mica plates are connected with the mounting brackets end to form a front-back through frame body, the mounting brackets comprise an inner PTC bracket and a plastic bracket at the outer side of the PTC bracket, two ends of each PTC heating element are respectively mounted at the inner sides of the two PTC brackets, and the mica plates are located at two sides of each PTC heating element. The outer surface insulation of the PTC ceramic heater is realized through the mica plate and the plastic support, and then the PTC ceramic heater can be directly installed on the fan shell, and the plastic frame body does not need to be additionally sleeved like the prior art, so that the production cost is reduced, and when the fan blows air to take out heat emitted by the PTC heater, the air can also blow the outer surface of the mica plate, so that the heat exchange is realized by utilizing the area of the outer surface of the mica plate, and the heat efficiency is higher.

Description

PTC ceramic heater

Technical Field

The utility model relates to the field of heaters, in particular to a PTC (positive temperature coefficient) ceramic heater.

Background

PTC ceramic heating elements on the market are divided into two types, namely charged heating elements and non-charged heating elements. The advantage of the electrified PTC heating element is that the heating is rapid, the power ratio is stable without electricity, the production cost price is one time cheaper than a non-electrified type, and the structure of the PTC heating element comprises a heating element body and a frame body for installing the heating element, but the defect is that the frame body on the surface is electrified and cannot be directly connected with a metal fan shell through the frame body. The general treatment mode on the market is that a plastic shell is additionally sleeved on the periphery of the whole PTC ceramic heating element, and then the plastic shell is connected and fixed with the fan shell. In this way, firstly, a set of mold of the plastic shell needs to be independently arranged, the cost is increased, and the outer surface of the PTC ceramic heating element is completely sealed, so that when the fan takes heat out of the PTC ceramic heating element, the outer surface of the PTC ceramic heating element cannot be used for heat transfer, and the heat efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a novel charged PTC ceramic heater, which can be directly mounted on a fan housing and has higher thermal efficiency.

The technical scheme adopted by the utility model for solving the problems is as follows: a PTC ceramic heater comprising:

the mounting frame comprises mounting brackets positioned at two ends and mica plates positioned at two sides, the mica plates are connected with the mounting brackets end to form a front-back through frame body, and the mounting brackets comprise an inner PTC bracket and a plastic bracket positioned at the outer side of the PTC bracket;

the two ends of the PTC heating body are respectively arranged on the inner sides of the two PTC supports, and the mica plates are positioned on the two sides of the PTC heating body.

As a further improvement of the above technical scheme, the PTC heating body includes a heat-conducting aluminum frame, at least one PTC heating sheet is arranged in the middle of the heat-conducting aluminum frame, a plurality of aluminum heat-conducting fins are arranged between the PTC heating sheet and the inner side wall of the heat-conducting aluminum frame, an air-guiding gap is formed between adjacent aluminum heat-conducting fins, and a ventilation gap is formed between the outer side wall of the heat-conducting aluminum frame and the inner side wall of the mica plate.

As a further improvement of the technical scheme, the fan is characterized in that a shell is arranged on the outer side of the fan, an air channel is formed in the shell, the plastic support is fixed on the outer side of the shell, and the PTC is heated to be opposite to an outlet of the air channel.

As a further improvement of the technical scheme, the fan comprises a motor arranged on the outer side of the shell and a wind wheel arranged on the inner side of the shell, and the motor is connected with the wind wheel through a coupler.

As a further improvement of the technical scheme, the outer surface of the mica plate is provided with a temperature controller connected with the PTC heating element.

As a further improvement of the technical scheme, a mounting hole is reserved on the top of the plastic support.

The utility model has the beneficial effects that: the utility model discloses a PTC ceramic heater, which comprises a mounting frame and PTC heating elements, wherein the mounting frame comprises mounting brackets at two ends and mica plates at two sides, the mica plates are connected with the mounting brackets end to form a front-back through frame body, the mounting brackets comprise an inner PTC bracket and a plastic bracket at the outer side of the PTC bracket, two ends of each PTC heating element are respectively mounted at the inner sides of the two PTC brackets, and the mica plates are located at two sides of each PTC heating element. The both sides frame through with traditional charged PTC ceramic heating element uses the mica plate that does not electrically conduct to replace, and replace the both ends of traditional charged PTC ceramic heating element with PTC support and plastic support, thereby make the surface insulation of PTC ceramic heater, and then can direct mount on the fan shell, and need not additionally overlap again and establish the plastic framework like prior art, thereby reduce manufacturing cost, thereby can also take away the heat that the PTC heating element distributed out at the fan will be bloated out, wind can also blow the mica plate surface, thereby utilize the area of mica plate surface to carry out the heat exchange, make the thermal efficiency higher.

Drawings

The utility model is further explained below with reference to the drawing description and the detailed description.

FIG. 1 is a schematic structural view of a preferred embodiment of the present invention;

fig. 2 is a schematic diagram of an explosive structure according to a preferred embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 2, a PTC ceramic heater includes:

the mounting frame 10 comprises mounting brackets at two ends and mica plates 11 at two sides, the mica plates 11 are connected with the mounting brackets end to form a front-back through frame body, and the mounting brackets comprise PTC brackets 12 at the inner sides and plastic brackets 13 at the outer sides of the PTC brackets 12;

the PTC heating element 20, the both ends of PTC heating element 20 are installed respectively in two PTC support 12 inboards, mica plate 11 is located the both sides of PTC heating element 20.

The utility model discloses a PTC ceramic heater, which comprises a mounting frame 10 and a PTC heating element 20, wherein the mounting frame 10 comprises mounting brackets at two ends and mica plates 11 at two sides, the mica plates 11 are connected with the mounting brackets end to form a front-back through frame body, the mounting brackets comprise an inner PTC bracket 12 and a plastic bracket 13 positioned at the outer side of the PTC bracket 12, two ends of the PTC heating element 20 are respectively mounted at the inner sides of the two PTC brackets 12, and the mica plates 11 are positioned at two sides of the PTC heating element 20. The both sides frame through with traditional charged PTC ceramic heating element uses nonconducting mica plate 11 to replace, and replace PTC support 12 and plastic support 13 for the both ends with traditional charged PTC ceramic heating element, thereby make the surface insulation of PTC ceramic heating element, and then can directly install on fan shell 30, and need not additionally overlap again and establish the plastic framework like prior art, thereby reduce manufacturing cost, thereby can also when the fan will be bloated thereby take the heat that PTC heating element 20 distributed out, wind can also blow through mica plate 11 surface, thereby utilize the area of mica plate 11 surface to carry out the heat exchange, make the thermal efficiency higher.

Further optimize, further inject the optimization to the structure of PTC heat-generating body 20, preferably PTC heat-generating body 20 includes the heat conduction aluminium frame, heat conduction aluminium frame middle part is provided with the piece that generates heat of at least one PTC, PTC generates heat and is provided with a plurality of aluminium heat conduction fins between piece and the heat conduction aluminium frame inside wall, forms the wind-guiding clearance between the adjacent aluminium heat conduction fin, the lateral wall of heat conduction aluminium frame with form the ventilation clearance between the 11 inside walls of mica plate. The PTC heating element 20 may have any conventional structure, for example, three strip-shaped heating sheets are provided in one frame along the length direction, and an air guiding space is formed between adjacent heating sheets.

Further optimize, preferably include the fan, the fan outside is provided with shell 30, be provided with the wind channel on the shell 30, plastic support 13 is fixed in the shell 30 outside, PTC generates heat just to the export in wind channel. Preferably, the fan includes a motor 31 disposed outside the housing 30 and a wind wheel 32 disposed inside the housing 30, and the motor 31 is connected to the wind wheel 32 through a coupling. The structure of the fan is various and is not limited to the above one, for example, the fan disclosed in patent No. 201720513809.3, or the fan disclosed in patent No. 201320730021. x. And is therefore not exhaustive.

In a further improvement, in order to facilitate the control of the PTC heating element 20, it is preferable that a temperature controller connected to the PTC heating element 20 is disposed on the outer surface of the mica plate 11.

Further, in order to facilitate the installation of the installation frame 10 on the blower housing 30, it is preferable that an installation hole 131 is reserved on the top of the plastic bracket 13.

The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical scope of the present invention, which can be directly or indirectly applied to other related technical fields without departing from the spirit of the present invention, are intended to be included in the scope of the present invention.

Claims

1. A PTC ceramic heater, comprising:

the mounting frame (10) comprises mounting brackets positioned at two ends and mica plates (11) positioned at two sides, the mica plates (11) are connected with the mounting brackets end to form a front-back through frame body, and the mounting brackets comprise PTC brackets (12) on the inner side and plastic brackets (13) positioned on the outer side of the PTC brackets (12);

the PTC heater comprises PTC heating bodies (20), wherein two ends of each PTC heating body (20) are respectively arranged on the inner sides of two PTC brackets (12), and mica plates (11) are positioned on two sides of each PTC heating body (20).

2. A PTC ceramic heater according to claim 1, wherein:

PTC heat-generating body (20) are including heat conduction aluminium frame, heat conduction aluminium frame middle part is provided with the piece that generates heat of at least one PTC, the PTC generates heat and is provided with a plurality of aluminium heat conduction fins between piece and the heat conduction aluminium frame inside wall, forms the wind-guiding clearance between the adjacent aluminium heat conduction fin, the lateral wall of heat conduction aluminium frame with form the ventilation clearance between mica plate (11) inside wall.

3. A PTC ceramic heater according to claim 1, wherein:

the fan, the fan outside is provided with shell (30), be provided with the wind channel on shell (30), plastics support (13) are fixed in the shell (30) outside, PTC generates heat just to the export in wind channel.

4. A PTC ceramic heater according to claim 3, wherein:

the fan comprises a motor (31) arranged on the outer side of the shell (30) and a wind wheel (32) arranged on the inner side of the shell (30), wherein the motor (31) is connected with the wind wheel (32) through a coupler.

5. A PTC ceramic heater according to claim 1, wherein:

the outer surface of the mica plate (11) is provided with a temperature controller connected with the PTC heating element (20).

6. A PTC ceramic heater according to claim 1, wherein:

and a mounting hole (131) is reserved on the top of the plastic bracket (13).