CN201821522U

CN201821522U - Exothermic heating device with thermosensitive resistor

Info

Publication number: CN201821522U
Application number: CN2010205092011U
Authority: CN
Inventors: 方云祥
Original assignee: CHANGSHU YONGXIANG ELECTROMECHANICAL Co Ltd
Current assignee: CHANGSHU YONGXIANG ELECTROMECHANICAL Co Ltd
Priority date: 2010-08-30
Filing date: 2010-08-30
Publication date: 2011-05-04
Anticipated expiration: 2020-08-30

Abstract

The utility model discloses an exothermic heating device with a thermosensitive resistor, which comprises a positive temperature coefficient (PTC) heating assembly, an electrode terminal and a heat radiator, wherein the PTC heating assembly comprises a group of PTC heating elements, metal electrode plates and insulating paper; the metal electrode plates are arranged on front surfaces and back surfaces of the PTC heating elements; the insulating paper covers peripheries of the metal electrode plates; the electrode terminal is connected with the metal electrode plates; and the heat radiator is divided into an upper heat radiating body and a lower heat radiating body. The exothermic heating device with the thermosensitive resistor is characterized in that the upper radiating body is a metal slab insert sheet; a first relieved tooth type heat radiating fin is formed on the upper surface of the slab insert sheet; a hollow containing cavity is formed in the middle of the lower heat radiating body; a second relieved tooth type heat radiating fin is formed on the lower surface of the lower heat radiating body; slots, into which the slab insert sheet is inserted, are formed on two sides of the lower heat radiating body; the PTC heating assembly is placed in the containing cavity; a waterproof insulating seat is arranged at a joint between the electrode terminal and the metal electrode plate; the waterproof insulating seat is positioned at cavity openings at two ends of the containing cavity; and a waterproof sealant is arranged at a gap among the cavity openings at two ends of the containing cavity and the waterproof insulating seat. The exothermic heating device with the thermosensitive resistor has the advantages of being convenient to assemble, applicable to lot production, safe in use, long in service life and excellent in heat radiating effect, and is completely insulated.

Description

A kind of thermistor heating formula heater

Technical field

The utility model relates to a kind of thermistor heating formula heater, and is particularly a kind of with a kind of thermistor heating formula heater of semistor as heater element.

Background technology

A kind of thermistor heating of positive temperature coefficient (PTC) formula heater is because its unique characteristic, make it have automatic constant-temperature, the flames of anger, long service life, be subjected to mains fluctuations to influence characteristics such as little, electric conversion rate height, be widely used in electrical apparatus industries such as air conditioner, warm-air drier, dryer, water heater.

PTC in prior art thermistor heating formula heater, its kind is more, mainly by gluing ripple type, wear structures such as fin-type, shovel fin-type.Wherein gluing ripple type is the ripple bar to be sticked with glue knot having the aluminum tube surfaces of PTC, and its shortcoming is: radiator is to contact in the glue bond mode with aluminum pipe, and heating efficiency is low, complex structure, and the damage ratio of producing the generation of ripple bar is more serious, is unfavorable for environmental protection.Wearing fin-type is that radiator portion is done slabbing, the sheet fin is through outside the aluminum pipe that has the PTC heater element, and its shortcoming is: fin and aluminum pipe adopt general contact heat conduction, and heat-conducting effect is poor, owing to each fin will be through outside the aluminum pipe, production technology is more complicated also.The shovel fin-type divides two kinds on integrated teeth structure and upper and lower cavity teeth structure, integrated teeth structure is to shovel out fin respectively on the both sides of aluminum pipe, fin and aluminum pipe are integrative-structures, characteristics are that heat radiation is relatively good, shortcoming is because inner chamber exists aluminium to cut in the course of processing, and cause inner foreign material owing to inner chamber is smaller difficult with cleaning, insulating barrier is thinner again, in the process of pressure pipe because phenomenon that surface of insulating layer is punctured does not appear in inner chamber only and usually, produce the adverse consequences of insulation breakdown, therefore have potential safety hazard; And existing upper and lower cavity teeth structure, it is to realize between the two be tightly linked (its structure is disclosed by Chinese patent Granted publication CN2708608Y) by setting up the elasticity connecting pin in the space at the conduit fastening place of radiator up and down, shortcoming is: production efficiency is low, product power instability, increased production cost of products after adding the elasticity connecting pin, and can't produce in enormous quantities.

Summary of the invention

The purpose of this utility model be to provide a kind of simple in structure, easy to assembly, connect firmly, insulation fully, safe and reliable, cost is low, be applicable to a kind of thermistor heating formula heater of production in enormous quantities.

The purpose of this utility model reaches like this, a kind of thermistor heating formula heater, comprise the PTC heat generating component, be used to connect electrode terminal and the radiator that power supply makes PTC heat generating component heating power, described PTC heat generating component comprises one group of PTC heater element, metal electrode board and insulating paper, metal electrode board is located at the positive and negative two sides of PTC heater element, and insulating paper is coated on the periphery of metal electrode board; Described electrode terminal is connected with metal electrode board; Radiator is divided into radiator and following radiator, is characterized in: radiator is a metal plate inserted sheet on described, is formed with the first teeth formula fin at the upper surface of dull and stereotyped inserted sheet; The described centre of radiator down is formed with the container cavity of hollow, and lower surface is formed with the second teeth formula fin, is formed with the slot that is used for for dull and stereotyped inserted sheet insertion in the both sides of following radiator; Described PTC heat generating component is placed in the container cavity; Be provided with the waterproof insulation seat at described electrode terminal and metal electrode board junction, the waterproof insulation seat is positioned at the accent place at container cavity two ends; Be provided with waterproof gasket cement at the accent at described container cavity two ends and the gap between the waterproof insulation seat.

In a specific embodiment of the present utility model, the cross sectional shape of described slot is a rectangle.

In a specific embodiment of the present utility model, the cross sectional shape of described slot is a U-shaped.

The utility model is owing to cancelled the elasticity connecting pin that being used in the prior art connects upper and lower radiator, dull and stereotyped inserted sheet by last radiator forms self-locking mechanism with the inserting of the slot of following radiator both sides, after in container cavity, placing the PTC heat generating component, by extruder upper and lower radiator is compressed and to get final product, loosening phenomenon can not appear in not only simple in structure, easy to assembly but also self-locking mechanism again after pressing, connect firmly, can save the elasticity connecting pin, thereby can reduce production costs, reduce processing step, be applicable to production in enormous quantities; Simultaneously, insulation fully, safe and reliable, life-span be long, have excellent radiating effect.

Description of drawings

Fig. 1 is a perspective view of the present utility model.

Fig. 2 is a planar structure cutaway view of the present utility model.

Embodiment

By the narration of applicant to embodiment, will help to understand technical spirit of the present utility model and effect more, yet, embodiment can not be regarded as restriction to technical solutions of the utility model.

See also Fig. 1 and in conjunction with Fig. 2, a kind of thermistor heating of the utility model formula heater comprises PTC heat generating component 1, electrode terminal 4, waterproof insulation seat 5 and radiator.Described radiator is divided into radiator 2 and following radiator 3, and last radiator 2 is made sheet flat board inserted sheet 21 by aluminium section bar, is shoveled by lathe at the upper surface of dull and stereotyped inserted sheet 21 and processes the first teeth formula fin 22; Following radiator 3 is also made by aluminium section bar, be formed with the cavity of resorption 31 of hollow in the middle of it, lower surface processes the second teeth formula fin 32 by the lathe shovel, both side ends at following radiator 3 has been bent into

slot

33,33 3 cross sectional shapes of slot are not subjected to any restriction, can be rectangular channel, also can be U-lag or claim C shape groove etc. that both fit are: the dull and stereotyped inserted sheet 21 that will go up radiator 2 inserts in a pair of slot 33 of radiator 3 both sides down and gets final product.Described PTC heat generating component 1 is placed in the container cavity 31, it comprises one group of PTC heater element 11, metal electrode board 12 and insulating paper 13, metal electrode board 12 has a pair of, be close to positive and negative two surfaces of PTC heater element 11, for PTC heater element 11 provides operating voltage, insulating paper 13 is coated on the periphery of metal electrode board 12, the electric leakage problem that can avoid charged metal electrode board and the dull and stereotyped inserted sheet 21 and the container cavity 31 chamber walls of the upper and

lower radiator

2,3 of aluminum to contact and bring thus.In order to guarantee combining closely between PTC heater element 1 and the radiator, make and the utlity model has better heat radiating effect, after PTC heater element 1 is put into the container cavity 31 of radiator, by the both sides of extruder, thereby finish being tightly linked of upper and

lower radiator

2,3 with last plane low pressure plane on dull and stereotyped inserted sheet 21 of slot 33.

See also Fig. 1, electrode terminal 4 one ends described in the utility model stretch out from the accent of container cavity 31 and are used to connect power supply, the other end and metal electrode board 12 are by welding or riveted and fixed, so just can make metal electrode board 12 obtain the voltage that power supply provides, and with PTC heater element 11 built-up circuit loops.Electrode terminal 4 can be respectively stretches out from the two ends accent of container cavity 31, also can stretch out from the same end accent of container cavity 31.Simultaneously, be provided with waterproof insulation seat 5 at the accent place at container cavity 31 two ends, waterproof insulation seat 5 ring sets have played the effect of location and insulation in the junction of electrode terminal 4 with metal electrode board 12.Waterproof gasket cement is sealed inner volume the accent and the sealing of the space between the waterproof insulation seat 5 of container cavity 31 fully.

Claims

1. thermistor heating formula heater, comprise PTC heat generating component (1), be used to connect electrode terminal (4) and the radiator that power supply makes PTC heat generating component (1) heating power, described PTC heat generating component (1) comprises one group of PTC heater element (11), metal electrode board (12) and insulating paper (13), metal electrode board (12) is located at the positive and negative two sides of PTC heater element (11), and insulating paper (13) is coated on the periphery of metal electrode board (12); Described electrode terminal (4) is connected with metal electrode board (12); Radiator is divided into radiator (2) and following radiator (3), it is characterized in that the described radiator (2) of going up is a metal plate inserted sheet (21), is formed with the first teeth formula fin (22) at the upper surface of dull and stereotyped inserted sheet (21); The described centre of radiator (3) down is formed with the container cavity (31) of hollow, and lower surface is formed with the second teeth formula fin (32), is formed with the slot (33) that is used for for dull and stereotyped inserted sheet (21) insertion in the both sides of following radiator (3); Described PTC heat generating component (1) is placed in the container cavity (31); Be provided with waterproof insulation seat (5) in described electrode terminal (4) and metal electrode board (12) junction, waterproof insulation seat (5) is positioned at the accent place at container cavity (31) two ends; Be provided with waterproof gasket cement at the accent at described container cavity (31) two ends and the gap between the waterproof insulation seat (5).

2. a kind of thermistor heating formula heater according to claim 1, the cross sectional shape that it is characterized in that described slot (33) is a rectangle.

3. a kind of thermistor heating formula heater according to claim 1, the cross sectional shape that it is characterized in that described slot (33) is a U-shaped.