CN211606823U

CN211606823U - PTC ceramic heater

Info

Publication number: CN211606823U
Application number: CN202020730433.3U
Authority: CN
Inventors: 曾光
Original assignee: Shanghai Xinpa Thermistor Ceramics Co ltd
Current assignee: Shanghai Xinpa Electronic Technology Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-09-29
Anticipated expiration: 2030-05-07

Abstract

The utility model discloses a PTC ceramic heater, aluminum pipe one end is uncovered, and the electrode has two, and the electrode both sides all are provided with the heating plate, and two electrodes are taken the heating plate to set up inside the aluminum pipe even, and high temperature resistant plastics shutoff head sets up in the uncovered one end of aluminum pipe, and high temperature resistant plastics shutoff head opens has two through-holes to be used for running through two electrodes, and the shell sets up in the aluminum pipe outside, and shell one end passes through the otic placode and links to each other with the apron, and the apron sets up in high temperature resistant plastics shutoff head outside, and the shell has still opened a plurality of louvres, and a plurality of fin have evenly been arranged on the shell surface, the utility model discloses rational in infrastructure, durability, leakproofness and insulating grade all improve greatly, and the shutoff operation is simpler than silica gel to the connectivity is better, can not drop, and aluminum.

Description

PTC ceramic heater

Technical Field

The utility model relates to a PTC heater technical field specifically is a PTC ceramic heater.

Background

The application of PTC heaters in life is more and more common, and the PTC heaters are composed of PTC ceramic heating elements and aluminum tubes. The PTC heating element has the advantages of small thermal resistance and high heat exchange efficiency, and is an automatic constant-temperature and electricity-saving electric heater. The safety plug is characterized in that in safety performance, the phenomenon of 'red' on the surface of a heater such as an electric heating tube cannot be generated under any application condition, so that scalding, fire and other potential safety hazards are caused, but the existing PTC also has some defects to be overcome, for example, the existing leading-out terminal part can be blocked and moistureproof by silica gel, and meanwhile, the leading-out terminal is subjected to insulation protection, but due to the problem of silica gel fluidity, the situation that glue filling is not in place easily occurs in the glue filling process, a hole occurs in the middle, once the fluidity is too good, the leakage between the PTC and an insulating material can occur, glue filling is not easy, and the silica gel plug has the defect of unstable connection, so that the problem existing in the prior art is solved by an improved technology.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a PTC ceramic heater, set up the high temperature resistant plastics stopper in aluminum pipe one end, compared with the mode of traditional silica gel encapsulating, durability, leakproofness and insulation level all improve greatly, the shutoff operation is simpler than silica gel, only need to peg graft the high temperature resistant plastics stopper on the aluminum pipe, and through the protruding cooperation with the recess of aluminum pipe on the high temperature resistant plastics stopper, the connectivity is better, can not drop, the surface is provided with the shell outside the aluminum pipe, it has louvre and fin to open on the shell, the radiating effect improves greatly; the outer side surface of the aluminum pipe is provided with protruding strips which are matched with the clamping grooves on the inner side surface of the shell, so that the connection stability of the aluminum pipe and the shell is ensured, and the problem provided in the background technology is solved.

In order to achieve the above object, the utility model provides a following technical scheme: a PTC ceramic heater comprises a heater main body, a high-temperature resistant plastic plugging head and a protective shell mechanism;

the heater comprises a heater main body, a plurality of electrodes and heating sheets, wherein the heater main body comprises an aluminum pipe, the number of the electrodes is two, one end of the aluminum pipe is open, the heating sheets are arranged on two sides of each electrode, and the two electrodes are arranged in the aluminum pipe together with the heating sheets;

the high-temperature-resistant plastic sealing head is arranged at one end of the opening of the aluminum pipe and is provided with two through holes for penetrating through the two electrodes;

the protective case mechanism comprises a case, a cover plate and radiating fins, wherein the case is arranged outside the aluminum pipe, one end of the case is connected with the cover plate through an ear plate, the cover plate is arranged outside the high-temperature-resistant plastic blocking head, the case is further provided with a plurality of radiating holes, and the radiating fins are uniformly arranged on the surface of the case.

Preferably, the utility model provides a pair of PTC ceramic heater, wherein, open one end inside surface of aluminum pipe has a plurality of recesses for mutually support with high temperature resistant plastics shutoff head, aluminum pipe outside surface is provided with protruding strip, is used for mutually supporting with the shell.

Preferably, the utility model provides a pair of PTC ceramic heater, wherein, high temperature resistant plastics shutoff head includes skin, intermediate level, inlayer and arch, the intermediate level both ends are provided with skin and inlayer respectively, inlayer outside surface is provided with a plurality of archs, the recess one-to-one that the arch in the inlayer outside and the uncovered one end inboard surface of aluminum pipe opened mutually supports, improves connectivity and insulating nature, avoids droing, the intermediate level is greater than the bore of aluminum pipe for it is spacing, avoid inserting completely in the aluminum pipe can't take out.

Preferably, the utility model provides a pair of PTC ceramic heater, wherein, open the inboard surface of shell has a plurality of draw-in grooves, the draw-in groove that the shell inboard was opened and the protruding strip one-to-one on aluminum pipe outside surface mutually support, guarantee the stability of being connected between shell and the aluminum pipe.

Preferably, the utility model provides a pair of PTC ceramic heater, wherein, the apron has two through-holes, the through-hole position that the apron was opened corresponds each other with two through-hole positions that high temperature resistant plastics shutoff head was opened for running through of two electrodes.

Preferably, the utility model provides a pair of PTC ceramic heater, wherein, two the electrode is positive electrode and negative electrode respectively, two the electrode parallel arrangement guarantees the stability of electricity connection.

Preferably, the utility model provides a pair of PTC ceramic heater, wherein, the heating plate is folding to be set up in the electrode both sides, guarantees that the heating plate normally generates heat constant temperature, and the heat that sends can concentrate.

Preferably, the utility model provides a pair of PTC ceramic heater, wherein, shell and apron both sides otic placode pass through bolt and nut built-up connection, and the shell of being convenient for is convenient for change the internal heating ware main part with apron installation and dismantlement.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses set up high temperature resistant plastics shutoff head in aluminum pipe one end, more traditional silica gel encapsulating's mode, durability, leakproofness and insulation level all improve greatly.

(2) The plugging operation is simpler than silica gel, and only the high-temperature-resistant plastic plugging head needs to be inserted into the aluminum pipe, and the connection is better and the plugging head cannot fall off due to the matching of the protrusion on the high-temperature-resistant plastic plugging head and the groove of the aluminum pipe.

(3) The outer side surface of the aluminum pipe is provided with a shell, and the shell is provided with heat dissipation holes and heat dissipation fins, so that the heat dissipation effect is greatly improved.

(4) The outer side surface of the aluminum pipe is provided with protruding strips which are matched with the clamping grooves on the inner side surface of the shell, so that the connection stability of the aluminum pipe and the shell is ensured.

Drawings

FIG. 1 is a schematic view of the structure of the present invention (heat sink not shown);

FIG. 2 is a schematic top view of the aluminum pipe;

FIG. 3 is a schematic structural view of an aluminum pipe in elevation;

FIG. 4 is a schematic top view of the protective mechanism;

FIG. 5 is a front view of the protective housing;

FIG. 6 is a schematic view of the housing;

fig. 7 is a schematic view of a high temperature resistant plastic plug structure.

In the figure: the aluminum tube comprises an aluminum tube 1, electrodes 2, a heating plate 3, a high-temperature-resistant plastic sealing head 4, a shell 5, a cover plate 6, a radiating fin 7, an ear plate 8, a radiating hole 9, a groove 10, a protruding strip 11, a clamping groove 12, an outer layer 41, a middle layer 42, an inner layer 43 and a protrusion 44.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a PTC ceramic heater comprises a heater main body, a high-temperature resistant plastic sealing head 4 and a protective shell mechanism; the heater main body comprises an aluminum pipe 1, two electrodes 2 and two heating sheets 3, wherein one end of the aluminum pipe 1 is open, the inner side surface of the open end of the aluminum pipe 1 is provided with a plurality of grooves 10, the outer side surface of the aluminum pipe 1 is provided with protruding strips 11, the number of the electrodes 2 is two, the two sides of each electrode 2 are provided with the heating sheets 3, the heating sheets 3 are arranged on the two sides of each electrode 2 in a folding manner, the two electrodes 2 are provided with the heating sheets 3 inside the aluminum pipe 1, the two electrodes 2 are respectively positive electrodes and negative electrodes, and the two; the high-temperature-resistant plastic sealing head 4 is arranged at one open end of the aluminum pipe 1, and the high-temperature-resistant plastic sealing head 4 is provided with two through holes for penetrating through the two electrodes 2; the protective housing mechanism includes shell 5, apron 6 and fin 7, shell 5 sets up in 1 outsidely of aluminum pipe, 5 one ends of shell are passed through otic placode 8 and are linked to each other with apron 6,

shell

5 and 6 both sides otic placode 8 of apron pass through bolt and nut built-up connection, apron 6 sets up in 4 outsidess of high temperature resistant plastics shutoff head, a plurality of louvres 9 have still been opened to shell 5, a plurality of fin 7 have evenly been arranged on the surface of

shell

5, 5 inboard surfaces of shell are opened there are a plurality of draw-in grooves 12, the draw-in groove 12 that 5 inboard institute opened and the protruding strip 11 one-to-one on 1 outside surface of aluminum pipe mutually support, apron 6 institute has two through-holes, the through-hole position that apron 6 institute opened and two through-hole.

As shown in fig. 7, the high temperature resistant plastic sealing head 4 comprises an outer layer 41, a middle layer 42, an inner layer 43 and protrusions 44, wherein the outer layer 41 and the inner layer 43 are respectively arranged at two ends of the middle layer 42, a plurality of protrusions 44 are arranged on the outer side surface of the inner layer 43, the protrusions 44 on the outer side of the inner layer 43 correspond to the grooves 10 formed on the inner side surface of the open end of the aluminum pipe 1 one by one and are matched with each other, and the middle layer 42 is larger than the caliber of the aluminum pipe.

The assembly method and the use principle are as follows: firstly, folding a heating plate 3 and welding the heating plate 3 on two sides of two electrodes 2 respectively, then inserting the two electrodes 2 together with the heating plate 3 into an aluminum pipe 1 respectively, then inserting a high-temperature-resistant plastic sealing head 4 into the aluminum pipe 1 and enabling the two electrodes 2 to pass through two through holes, when the high-temperature-resistant plastic sealing head 4 is inserted into the aluminum pipe 1, a bulge 44 on the outer side surface of an inner layer 43 of the high-temperature-resistant plastic sealing head 4 is just positioned in a groove 10 on the inner side surface of an open end of the aluminum pipe 1, then sleeving a shell 5 with a radiating fin 7 outside the aluminum pipe 1, connecting a cover plate 6 with the shell 5 and enabling the two electrodes to pass through holes on two sides of the cover plate 6, and then connecting the shell 5 with an ear plate 8 of the cover plate 6. Compared with the traditional silica gel glue filling mode, the utility model has the advantages that the durability, the sealing performance and the insulation grade are greatly improved as the high temperature resistant plastic sealing head 4 is arranged at one end of the aluminum pipe 1; the plugging operation is simpler than that of silica gel, only the high-temperature-resistant plastic plugging head 4 needs to be inserted into the aluminum pipe 1, and the bulge 44 on the high-temperature-resistant plastic plugging head 4 is matched with the groove 10 of the aluminum pipe 1, so that the connection is better, and the dropping-off cannot occur; the outer side surface of the aluminum pipe 1 is provided with a shell 5, the shell 5 is provided with a heat dissipation hole 9 and a heat dissipation fin 7, and the heat dissipation effect is greatly improved; the outer side surface of the aluminum pipe 1 is provided with a protruding strip 11 which is matched with a clamping groove 12 on the inner side surface of the shell 5, so that the connection stability of the aluminum pipe 1 and the shell 5 is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A PTC ceramic heater characterized by: comprises a heater main body, a high-temperature resistant plastic blocking head (4) and a protective shell mechanism;

the heater comprises a heater main body, wherein the heater main body comprises an aluminum pipe (1), two electrodes (2) and heating sheets (3), one end of the aluminum pipe (1) is open, the number of the electrodes (2) is two, the heating sheets (3) are arranged on two sides of each electrode (2), and the two electrodes (2) are arranged in the aluminum pipe (1) together with the heating sheets (3);

the high-temperature-resistant plastic sealing plug (4) is arranged at one open end of the aluminum pipe (1), and the high-temperature-resistant plastic sealing plug (4) is provided with two through holes for penetrating through the two electrodes (2);

the protective case mechanism comprises a case (5), a cover plate (6) and radiating fins (7), wherein the case (5) is arranged outside an aluminum pipe (1), one end of the case (5) is connected with the cover plate (6) through an ear plate (8), the cover plate (6) is arranged outside a high-temperature-resistant plastic sealing head (4), the case (5) is further provided with a plurality of radiating holes (9), and the surface of the case (5) is uniformly provided with the radiating fins (7).

2. A PTC ceramic heater according to claim 1, wherein: the aluminum pipe is characterized in that a plurality of grooves (10) are formed in the inner side surface of the open end of the aluminum pipe (1), and protruding strips (11) are arranged on the outer side surface of the aluminum pipe (1).

3. A PTC ceramic heater according to claim 1, wherein: the high-temperature-resistant plastic blocking head (4) comprises an outer layer (41), a middle layer (42), an inner layer (43) and protrusions (44), wherein the outer layer (41) and the inner layer (43) are arranged at two ends of the middle layer (42) respectively, a plurality of protrusions (44) are arranged on the outer side surface of the inner layer (43), the protrusions (44) on the outer side of the inner layer (43) correspond to the grooves (10) formed in the inner side surface of the opening end of the aluminum pipe (1) one by one and are matched with each other, and the middle layer (42) is larger than the caliber of the aluminum pipe (1).

4. A PTC ceramic heater according to claim 1, wherein: the aluminum pipe is characterized in that a plurality of clamping grooves (12) are formed in the inner side surface of the shell (5), and the clamping grooves (12) formed in the inner side of the shell (5) correspond to the protruding strips (11) on the outer side surface of the aluminum pipe (1) one by one and are matched with each other.

5. A PTC ceramic heater according to claim 1, wherein: the cover plate (6) is provided with two through holes, and the positions of the through holes formed in the cover plate (6) correspond to the positions of the two through holes formed in the high-temperature-resistant plastic plugging head (4).

6. A PTC ceramic heater according to claim 1, wherein: the two electrodes (2) are respectively a positive electrode and a negative electrode, and the two electrodes (2) are arranged in parallel.

7. A PTC ceramic heater according to claim 1, wherein: the heating sheet (3) is arranged on two sides of the electrode (2) in a folding mode.

8. A PTC ceramic heater according to claim 1, wherein: the shell (5) and the ear plates (8) at two sides of the cover plate (6) are combined and connected through bolts and nuts.