CN206136327U - A Practical Liquid PTC Heater - Google Patents

Abstract

The utility model relates to a practical liquid PTC heater, which comprises a metal outer tube, a heat-conducting aluminum profile and a PTC heating sheet, wherein the heat-conducting aluminum profile is arranged inside the metal outer tube, the heat-conducting aluminum profile is provided with two symmetrical placing cavities, the inner side of the placing cavity is provided with two symmetrical arc-shaped convex angles, the PTC heating sheet is placed in the placing cavity and is clamped by the arc-shaped convex angles to prevent the heat-conducting aluminum profile from moving, the outer side of a single heat-conducting aluminum profile is provided with two convex columns, the four convex columns are symmetrically distributed to prevent the heat-conducting aluminum profile from expanding and deforming, the two arc-shaped convex angles in the placing cavity clamp the PTC heating sheet, the PTC heating sheet can not move and is fully contacted with the heat-conducting aluminum profile, the heat conduction is facilitated, after the outer side of the heat-conducting aluminum profile is expanded by heating, the four convex columns, and the PTC heating sheet is prevented from leaking electricity, so that safety accidents are prevented.

Description

A Practical Liquid PTC Heater

technical field

The utility model relates to a heater, in particular to a practical liquid PTC heater.

Background technique

PTC heater is also called PTC heating element, because it has the characteristics of rapid temperature rise, self-control temperature in case of power failure, long service life, non-self-ignition, safety and reliability, etc., it is especially used for heating in the printed circuit board (PCB) industry and the photoelectric industry. Liquid, the working principle of the PTC heater is: first power on to drive the PTC heating sheet to heat, the heat is conducted to the external metal tube through the heat-conducting aluminum profile, and the metal tube heats the liquid. The PTC heater with the above structure is usually heated by a single PTC heating sheet, because when the PTC heating sheet is heated, the heat-conducting aluminum profile is easy to heat up and expand and deform, resulting in the PTC heating sheet not being able to fully contact the heat-conducting aluminum profile, unable to effectively conduct heat, and reducing the heating effect , and the deformed heat-conducting aluminum profile shortens the service life and cannot meet the needs of actual use.

Utility model content

In order to solve the poor heating effect of the existing PTC heater, the utility model provides a reasonable and convenient practical liquid PTC heater, the specific technical scheme is as follows:

A practical liquid PTC heater, including a metal outer tube, a heat-conducting aluminum profile and a PTC heating sheet. The metal outer tube is equipped with a heat-conducting aluminum profile. There are two heat-conducting aluminum profiles and are symmetrical to each other. There is a placement cavity inside the heat-conducting aluminum profile. There are two symmetrical arc-shaped lobes on the inside of the cavity. The PTC heating sheet is placed in the cavity and clamped by the arc-shaped lobes to prevent movement. There are two convex posts on the outside of a single heat-conducting aluminum profile, and the four convex posts are symmetrical. The distribution prevents thermal expansion and deformation of thermally conductive aluminum profiles.

As another preferred solution of the present invention, the outer layer of the PTC heating sheet is covered with an insulating sheath.

As another preferred solution of the present invention, a protective copper sheet is installed above the insulating sleeve, an aluminum plug is installed above the protective copper sheet, and the aluminum plug is in contact with the inner top of the placement cavity.

As another preferred solution of the present utility model, the metal outer tube is a stainless steel tube or a titanium tube or a Teflon sleeve on the surface of the stainless steel tube.

As another preferred solution of the present invention, the PTC heating sheet is connected to an external power supply through lead electrodes.

As another preferred solution of the present invention, the PTC heating sheet is a PTC ceramic heating sheet.

As another preferred solution of the present invention, the aluminum plug piece is composed of two trapezoidal aluminum plug pieces fitted together.

Beneficial effects of the utility model: when the PTC heater of the utility model is used for heating, the PTC heating sheet will be clamped by two arc-shaped protruding angles inside the cavity, and the PTC heating sheet will not move and fully contact with the heat-conducting aluminum profile, which is conducive to conduction Heat, after the outer side of the heat-conducting aluminum profile is heated and expanded, the four convex columns are arranged symmetrically, which is conducive to mutually pressing against each other to offset the force, and the heat-conducting aluminum profile will not be deformed. In addition, the outer layer of the PTC heating sheet is covered with an insulating sleeve to prevent PTC The heating sheet leaks electricity, causing a safety accident.

Description of drawings

Fig. 1 is the front view of the utility model;

Fig. 2 is the sectional view of A-A direction in Fig. 1;

Fig. 3 is a sectional view of the heat-conducting aluminum profile of the utility model;

Fig. 4 is a schematic diagram of the aluminum plug of the present invention.

detailed description

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further:

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the referred position or element must have a specific orientation, to use a specific The azimuth structure and operation, therefore can not be construed as the limitation of the present utility model.

As shown in Figures 1 to 3, a practical liquid PTC heater includes a metal outer tube 1, a heat-conducting aluminum profile 2 and a PTC heating sheet 3. The metal outer tube 1 is equipped with a heat-conducting aluminum profile 2, and the PTC heating sheet 3 passes through the lead electrode. Connect the external power supply. There are two heat-conducting aluminum profiles 2 and they are symmetrical to each other. There is a placement cavity 21 inside the heat-conducting aluminum profile 2. There are two symmetrical arc-shaped convex corners 22 inside the placement cavity 21. The PTC heating sheet 3 is placed in the placement cavity. The inside of 21 is clamped by the arc-shaped lobes 22 to prevent displacement, and two convex posts 23 are arranged on the outside of a single heat-conducting aluminum profile 2, and the four convex posts 23 are symmetrically distributed to prevent thermal expansion and deformation of the heat-conducting aluminum profile 2.

Specifically, the outer layer of the PTC heating sheet 3 is covered with an insulating sleeve 4. The insulating sleeve 4 prevents the metal outer tube 1 from being charged and causes a safety accident when the PTC heating sheet 3 leaks electricity. A protective copper sheet 5 is installed above the insulating sleeve 4 to protect the copper sheet. 5 Protect the PTC heating sheet 3 and the insulating sleeve 4 from damage, and install the aluminum plug 6 above the copper sheet 5, and the aluminum plug 6 is in contact with the top of the inner side of the placement cavity 21, and better clamps and contacts the PTC heating sheet 3, which is convenient heat transfer.

Specifically, the metal outer tube 1 is a stainless steel tube or a titanium tube or a stainless steel tube with Teflon on the surface, which can conduct heat quickly, and the PTC heating element 3 is a PTC ceramic heating element, which responds quickly to current and has stable and reliable performance. , strong impact resistance, long service life, small size, good heating effect, and can be processed to produce products of various shapes and specifications. The aluminum plug piece 6 is composed of two trapezoidal aluminum plug pieces 61 that are embedded with each other. The two trapezoidal aluminum plug pieces 61 can slide relative to each other, so as to adjust the height of their combination, which is convenient to solve the problem of protecting the copper piece 5 and the placement cavity due to processing errors. The distance of the inner wall is inconsistent, and the insertion and removal are simple and convenient, which saves time.

In a word, the PTC heater of the utility model has a reasonable structural design, fast and uniform heating, the PTC heating sheet 3 will not move, and the heat-conducting aluminum profile 2 can quickly conduct heat, which is efficient and fast, and has strong practicability, and there will be no heating pipes burning red, Tube breakdown and other phenomena can prevent fires and have a long service life to meet actual production needs.

The above content is a further detailed description of the utility model in conjunction with specific preferred embodiments. It cannot be determined that the specific implementation of the utility model is only limited to these descriptions. Under the premise of the concept of the utility model, some simple deduction or replacement can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (7)

1. A practical liquid PTC heater, including a metal outer tube, a heat-conducting aluminum profile and a PTC heating sheet, and a heat-conducting aluminum profile is installed inside the metal outer tube. There is a placement cavity, and there are two symmetrical arc-shaped lobes inside the cavity. The PTC heating sheet is placed in the cavity and clamped by the arc-shaped lobes to prevent displacement. There are two convex posts on the outside of a single heat-conducting aluminum profile. The four protruding columns are symmetrically distributed to prevent thermal expansion and deformation of the heat-conducting aluminum profile. 2. a kind of practical liquid PTC heater according to claim 1, is characterized in that: described PTC heating sheet outer layer is coated with insulation cover. 3. A kind of practical liquid PTC heater according to claim 2, is characterized in that: above described insulating cover, protective copper sheet is installed, and aluminum plug sheet is installed above the protective copper sheet, and aluminum plug sheet is connected with the top inside the placement cavity. touch. 4. A kind of practical liquid PTC heater according to claim 1, is characterized in that: described metal outer pipe is stainless steel tube or titanium tube or stainless steel tube surface suit Teflon. 5. a kind of practical liquid PTC heater according to claim 1, is characterized in that: described PTC heating sheet is connected external power supply by lead electrode. 6. A kind of practical liquid PTC heater according to claim 1, is characterized in that: described PTC heating sheet is PTC ceramic heating sheet. 7. A kind of practical liquid PTC heater according to claim 3, is characterized in that: described aluminum plug piece is made up of two trapezoidal aluminum plug pieces that fit mutually.