CN205005281U

CN205005281U - Radiating fin integral type PTC electric heater

Info

Publication number: CN205005281U
Application number: CN201520605458.XU
Authority: CN
Inventors: 张怀国
Original assignee: Wuhu Hengmei Electric Appliances Co Ltd
Current assignee: Wuhu Hengmei Electric Appliances Co Ltd
Priority date: 2015-08-13
Filing date: 2015-08-13
Publication date: 2016-01-27
Anticipated expiration: 2025-08-13

Abstract

The utility model provides a radiating fin integral type PTC electric heater, the fin aluminum pipe that include generate heat core and aluminum pipe, the whole contour machining of strip of dispelling the heat forms, generate heat the core setting inside the fin aluminum pipe, the left end of fin aluminum pipe is provided with the inserted sheet, and the core that generates heat is connected the electric energy through the inserted sheet and is generated heat, there is the boss cavity both sides of fin aluminum pipe, the fin aluminum pipe outside is the tangent connection structure of three circular arc. This PTC electric heater carries out thorough optimization in fin aluminum pipe structure, change the recess of fin aluminum pipe both sides into 3 the tangent structures of circular arc, it can not concentrate on whole grooved surface to compress tightly back stress, the PTC electric heater component uses the back, effect of thermal conductivity is good, high power density, heat rapidly, and energy is saved, satisfy the requirement of high power density product, long -time use simultaneously produces stress under can not yin gaowen and leads to the fact the fin aluminum pipe to descend to the packing force of the piece that generates heat, and make the power attenuation accelerate, promotion product quality that can be fine.

Description

Radiating fin integral type PTC electric heater

Technical field

The utility model relates to air conditioner room unit field, particularly relates to a kind of radiating fin integral type PTC electric heater.

Background technology

At present, PTC electric heater element is popularized in the application of air conditioner.Be mainly used in heating in Split wall-mounted or floor standing air-conditioner air conditioner indoor machine, PTC electric heater element roughly has two kinds of structures at present, and one comprises heat generating core, aluminum pipe, heat sink strip, high temperature bonding silica gel, pedestal, line group etc.; Another kind comprises heat generating core, aluminum pipe and heat sink strip global formation to process (hereinafter referred to as fin aluminum pipe), pedestal, line group etc.Because the aluminum pipe of the first PTC electric heater element, heat sink strip need to use high temperature bonding silica gel to carry out bonding, bonding rear heat-conducting effect is poor, heat cannot be good be delivered to the external world, power density is low, not only waste energy but also the high product requirement of power density cannot be met, in use silica gel is constantly aging, and the power attenuation of PTC electric heater is serious soon, thus also affects its useful life.And the second can well heat transmission and the highdensity problem of power, but due to design feature itself, under Long-Time Service, in high temperature, the aluminum pipe side compressing place of fin aluminum pipe there will be stress, causes thrust to decline, and power attenuation is very serious.Therefore, solve PTC electric heater element poor in heat transmission, power density is low, and the problem that power attenuation is fast just seems particularly important.

Utility model content

The purpose of this utility model is to provide a kind of radiating fin integral type PTC electric heater, comprise heat generating core, fin aluminum pipe, sealing silica gel etc., optimize original fin aluminium pipe structure, solve the problem that after the aluminum pipe of PTC electric heater element, heat sink strip, the processing of high temperature bonding silica gel, heat conduction is bad and power attenuation is serious.

The utility model provides a kind of radiating fin integral type PTC electric heater, comprise the fin aluminum pipe that heat generating core and aluminum pipe, heat sink strip global formation process, it is inner that described heat generating core is arranged on fin aluminum pipe, the left end of described fin aluminum pipe is provided with inserted sheet, heat generating core carries out the heating of connection electric energy by inserted sheet, there is boss the cavity both sides of described fin aluminum pipe, are three tangent syndetons of circular arc outside described fin aluminum pipe.

Further improvement is: the fin of described fin aluminum pipe is provided with construction section, described construction section does not arrange fin.

Further improvement is: described fin aluminum pipe is provided with shovel piece.

In order to the aluminum pipe, the heat sink strip that solve conventional PTC electric heater use the bonding rear heat-conducting effect of high temperature bonding silica gel poor, power density is low, and power attenuation is fast, and fin aluminum pipe is changed in aluminum pipe, heat sink strip, the processing of high temperature bonding silica gel.

First by adding hot extrusion molding tube chamber and apparent size, fin is shoveled out again by cold worked shovel piece mode, fin shape is circular arc type or linear pattern, spacing of fin (the tangential spacing of arc surface) is 1-5mm, the whole height of fin aluminum pipe is 10-50mm, one-sided shovel piece height is 5-20mm, and fin thickness is 0.1-1mm, and fin aluminum pipe total length is 50-2000mm.The fin shoveled out can arrange construction section at an arbitrary position, is convenient to other parts such as mounted base, panel beating.

The plan view shape of fin is circular curve type or linear pattern, and shovel piece width is 5-50mm, and the overall width of fin aluminum pipe is 10-60mm.

Fin aluminum pipe housing depth is 3-6mm, there is boss fin aluminum pipe cavity both sides, be used for locating heat generating core, fin aluminum pipe height is 4-6mm, be three tangent syndetons of circular arc outside fin aluminum pipe, preventing compressing the bounce-back of rear stress causes properties of product bad, and fin left view shape is trapezoidal or rectangle.

The beneficial effects of the utility model: this PTC electric heater is optimized thoroughly in fin aluminium pipe structure, the groove of fin aluminum pipe both sides is changed into 3 tangent structures of circular arc, after compressing, stress is not concentrated in whole groove surface, after PTC electric heater element uses, good heat conduction effect, power density is high, heat rapidly, energy savings, meet high power density product requirement, simultaneously long-time use can not produce stress under Yin Gaowen and cause fin aluminum pipe to decline to the thrust of fever tablet, and power attenuation is accelerated, can well Improving The Quality of Products.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the main TV structure schematic diagram of fin aluminum pipe of the present utility model.

Fig. 3 is fin aluminum pipe plan structure schematic diagram of the present utility model.

Fig. 4 is the left TV structure schematic diagram of fin aluminum pipe of the present utility model.

Wherein: 1-heat generating core, 2-fin aluminum pipe, 3-inserted sheet, 4-construction section, 5-shovel piece, 6-boss.

Embodiment

In order to deepen understanding of the present utility model, below in conjunction with embodiment, the utility model is described in further detail, and this embodiment, only for explaining the utility model, does not form the restriction to the utility model protection range.

As Figure 1-4, present embodiments provide a kind of radiating fin integral type PTC electric heater, comprise the fin aluminum pipe 2 that heat generating core 1 and aluminum pipe, heat sink strip global formation process, it is inner that described heat generating core 1 is arranged on fin aluminum pipe 2, the left end of described fin aluminum pipe 2 is provided with inserted sheet 3, and heat generating core 1 carries out the heating of connection electric energy by inserted sheet 3.The fin of described fin aluminum pipe 2 is provided with construction section 4, described construction section 4 does not arrange fin.Described fin aluminum pipe 2 is provided with shovel piece 5.There is boss 6 the cavity both sides of described fin aluminum pipe 2, are three tangent syndetons of circular arc outside described fin aluminum pipe 2.

Claims

1. a radiating fin integral type PTC electric heater, it is characterized in that: comprise the fin aluminum pipe (2) that heat generating core (1) and aluminum pipe, heat sink strip global formation process, it is inner that described heat generating core (1) is arranged on fin aluminum pipe (2), the left end of described fin aluminum pipe (2) is provided with inserted sheet (3), heat generating core (1) carries out the heating of connection electric energy by inserted sheet (3), there is boss (6) the cavity both sides of described fin aluminum pipe (2), and described fin aluminum pipe (2) outside is three tangent syndetons of circular arc.

2. radiating fin integral type PTC electric heater as claimed in claim 1, is characterized in that: the fin of described fin aluminum pipe (2) is provided with construction section (4), and (4) do not arrange fin to described construction section.

3. radiating fin integral type PTC electric heater as claimed in claim 1 or 2, is characterized in that: described fin aluminum pipe (2) is provided with shovel piece (5).