DE112006000165T5 - PTC rod assembly and preheater which includes such - Google Patents

Abstract

A positive temperature coefficient (PTC) rod assembly comprising PTC elements for use in a vehicle preheater, comprising:
a lower PTC rod constructed in the form of a channel with an open side;
an anode end disposed within the lower PTC rod;
an insulating means made of an insulating material and coupled to enclose the anode end, the insulating means being formed with first exposure apertures through which a portion of a side surface of the anode end is exposed and second exposure apertures through which a portion of the other side surface of the anode end is exposed ;
the PTC elements are respectively inserted into the first exposure openings of the insulating means so that the PTC elements can be brought into contact with the anode end;
Heat transfer blocks, which are respectively inserted into second exposure openings of the insulating means, so that the heat transfer blocks can be brought into contact with the anode end; and
an upper PTC rod, which is coupled to the open side ...

Description

Technical area

The The present invention relates to a bar assembly a positive temperature coefficient (PTC) and a preheater for a vehicle, which comprises such and in particular on a PTC rod assembly, which is designed such that the structure of an insulating agent, which is used for attaching an anode end or terminal is further simplified and that PTC elements securely attached thereto can be as well as a preheater for a Vehicle comprising one.

State of the art

One normal vehicle has a heater for heating the Vehicle interior or to remove moisture or frost on a windshield of the vehicle using thermal Energy of cooling water, which by heat is heated, which is generated by a drive of the vehicle.

The Heating device needs, as cooling water, which flowing around the drive after the drive has been started, it is introduced into a heater, a long time to the cooling water to heat up and then to heat the vehicle interior. Accordingly, there is a problem that a driver and / or passenger or passengers for a particular Time period in the cold vehicle interior must stop after the drive was started.

To solve such a problem, the Korean Patent Application No. 10-0445722 a heater bar assembly and a preheater, wherein the preheating is performed using PTC elements.

below will the structure of the conventional preheater briefly described with reference to the accompanying drawings.

1 is an exploded view of a conventional preheater.

As in 1 As shown, the conventional preheater for a vehicle has PTC rod assemblies 10 each of which comprises PTC elements; Heat fin assemblies 20 on either side of each of the PTC bar assemblies 10 are arranged parallel to each other; anode ends 30 , which are parallel to the heat rib arrangements 20 are arranged; frame 40 and 50 , each with both lateral ends of a combination of the PTC rod assemblies 10 as well as the heat rib arrangements 20 and the anode ends 30 coupled; and housing 60 and 70 , each with both elongated ends of a combination of the PTC rod assemblies 10 as well as the heat rib arrangements 20 and the anode ends 30 with the frame 40 and 50 are coupled.

Furthermore, it is preferred that rib protection means 80 on inner surfaces of the frame 40 and 50 are provided to the rib arrangements 20 to protect.

2 is an exploded perspective view of the conventional PTC rod assembly and

3 is a cross-sectional view of the conventional PTC rod assembly.

As in the 2 and 3 a lower PTC rod is shown 11 designed in the form of a channel to serve as a kind of receiving part.

An insulating agent 12 is on a bottom part of the lower PTC rod 11 arranged to avoid electrical losses. The insulating agent 12 is made of a non-conductive material such as nylon with good thermal conductivity.

In addition, an anode end 17 which is made of carbon steel or the like, in a longitudinal direction firmly on the insulating means 12 coupled. A soil groove 16 is a bottom surface of the insulator 12 molded so that the relatively thin anode end 17 can be picked up and safely in the groove 16 can be attached. In addition, the PTC elements 18 , which generate heat by applying electric power to them, in stepped recesses 15 arranged, which on the sides of the bottom groove 16 are formed and then through the terminal projections 14 attached, which at lateral side ends of the stepped recesses 15 are provided.

However, there are problems with the stepped recesses 15 and the terminal projections 14 for fixing the PTC elements 18 in terms of their production and increase in production costs.

Furthermore, a plurality of openings 13 in the bottom of the insulator 12 formed, allowing heat to pass through the PTC elements 18 is generated by this on the lower PTC rod 11 can be transferred. This, however, that air in the openings 13 which has a very low thermal conductivity A drawback is that the heat transfer efficiency with which the heat generated by the PTC elements 18 is transmitted to the lower PTC rod is significantly lowered.

Disclosure of the invention

Technical problem

The The present invention is intended to solve the problems described above to solve. An object of the present invention is to provide a PTC rod assembly to provide an insulating means for fixing an anode end has a simple structure and can be easily manufactured and the heat transfer efficiency the PTC elements is improved, as well as a preheater for a vehicle, which comprises the PTC arrangement.

Technical solution

A PTC rod assembly according to the present invention Invention mm Loosen One of these problems is a PTC rod assembly which has PTC elements for use in a preheater of a vehicle. The PTC rod assembly has a lower PTC rod, which in the form of a channel with a open side is configured; an anode end, which within the lower PTC rod is arranged; an insulating agent, which consists of is made of an insulating material and is coupled to to enclose the anode end and which with first exposure openings is equipped, through which a part of a Seitenf1iche the anode end can be exposed and second exposure holes through which a part the other side surface the anode end can be exposed; PTC elements, respectively in the first exposure openings of the insulating agent are used, so that the PTC elements with the Anode end can be brought into contact; Heat transfer blocks, which in each case in the second exposure openings of the insulating means be introduced so that the heat transfer blocks with the Ano denende can be brought into contact; and an upper PTC rod, which is coupled to the open side of the lower PTC rod cover.

The Anode end and the insulating agent are preferably integral with each other formed by a dual injection molding process and the insulating agent is preferably at a certain distance from a bottom surface of spaced bottom PTC rod and a bottom surface of the upper PTC rod.

The Insulating means may have protruding steps, which on both Ends of which are formed and the protruding steps can with inner surfaces the lower PTC rod and the upper PTC rod in close contact be brought, i. inner side wall surfaces and the bottom surface of the lower PTC rod and the bottom surfaces of the upper PTC rod. Each of the first and second exposure holes may be shaped that it has a rectangular shape and notches, which at corresponding Corners of it are formed.

The Become heat transfer blocks preferably made of aluminum to have a thickness, which is smaller than that of the PTC elements.

Of Further, a preheater for a vehicle in accordance with the present invention, the PTC rod assembly according to the above Construction on.

Advantageous effects

The PTC rod assembly according to the present invention This invention has advantages in that the insulating means for fixing the anode end has a simple structure and on conventional Can be made, resulting in lower production costs leads and where heat, which is generated by the PTC elements, transmitted with a higher heat transfer efficiency becomes.

Of Further points the preheater for a vehicle in accordance with the present invention an advantage, in view of that the power of the preheater, which is able to heat the interior of the vehicle significantly can be improved.

Brief description of the drawings

1 is an exploded perspective view of a conventional preheater.

2 is an exploded perspective view of a conventional PTC rod assembly.

3 is a cross-sectional view of the conventional PTC rod assembly.

4 Figure 11 is an exploded perspective view of a PTC rod assembly in accordance with the present invention.

5 Fig. 10 is a side view showing a state in which an anode end and an insulating means are coupled together.

6 is a cross-sectional view of the Ano denendes and the insulator along the line AA, which in 5 is shown.

7 FIG. 12 is a perspective view of the PTC rod assembly in accordance with the present invention. FIG.

8th is a cross-sectional view of the PTC rod assembly along the line BB, which in 7 is shown.

9 is a cross-sectional view of the PTC rod assembly taken along the line CC, which in 7 is shown.

Best mode for running the invention

below will be in accordance with of the present invention preferred embodiments of a PTC rod assembly and a preheater for a A vehicle comprising the same, described in detail with reference to the attached Drawings.

4 Figure 11 is an exploded perspective view of a PTC rod assembly in accordance with the present invention.

As in 4 shown has the PTC rod assembly with the PTC elements 400 for a vehicle in accordance with the present invention, a lower PTC rod 100 which is constructed in the form of an elongate channel with an open side; an anode end 200 which is inside the lower PTC rod 100 is arranged while it is from an insulating agent 300 is enclosed, which is made of an insulating material, so that the anode end is not in contact with the lower PTC rod 100 is; being the PTC elements 400 between a surface of the anode end 200 and an upper PTC rod 600 are arranged; being heat transfer blocks 500 which are formed of a material having a high thermal conductivity and with the other sides of the surfaces of the anode end 200 be brought into contact; and wherein the upper PTC rod 600 is coupled to the open side of the lower PTC rod 100 cover.

Each of the PTC elements 400 is coupled so that a surface thereof with the anode end 200 is in contact and the other surface of it with the upper PTC rod 600 which acts as a cathode end. The PTC elements generate heat when electrical power is provided. Then acts as the upper PTC rod 600 and the lower PTC rod 100 be brought into contact with each other, the lower PTC rod 100 also as a cathode end, in the same way as the upper PTC rod 600 , Furthermore, protruding steps 330 at both ends of the insulating means 300 educated. When the upper PTC rod and the lower PTC rod 100 coupled to each other, the protruding steps are in close contact with inner surfaces of the upper PTC rod 600 and the lower PTC rod 100 brought, ie the inner side wall surfaces and a bottom surface of the lower PTC rod 100 and a bottom surface of the upper PTC rod 600 (please refer 8th ). Accordingly, there is an internal space passing through the upper PTC rod 600 and the lower PTC rod 100 is defined and by the preceding stages 330 is sealed, no possibility of fire due to contact of dust or other foreign substances with the PTC elements 400 could break out.

5 FIG. 16 is a side view showing a state in which the anode end and the insulating means are coupled together, and FIG 6 is a sectional view of the anode end and the insulating means along the line AA, as in 5 shown.

As in the 5 and 6 shown encloses the insulating means 300 the anode end 200 and has first exposure openings 310 and second exposure openings 320 on, so that through these some parts of the one and the other side surface of the anode end 200 can be suspended. Then you can use the insulating agent 300 and the anode end 200 can be manufactured separately and then coupled together or they can be made integrally by a dual injection molding process. In the case where the anode ends 200 and the insulating agent 300 are integrally formed with each other by the dual injection molding process, the number of manufacturing steps and the assembly steps are reduced. An advantage is therefore that the manufacturing costs of the PTC rod assembly are significantly reduced.

In the production of the insulating agent 300 by means of an injection molding process, if any of the first exposure openings 310 is shaped to have a simple rectangular shape, often cases, in the corresponding corners of each of the first exposure openings 310 do not form a right angle if necessary because of the characteristics of the injection molding process. If the corners of each of the first exposure holes 310 can not form a right angle, as described above, the PTC elements 400 not in close contact with the anode end 200 to be brought. Thus, the heat generation function is disturbed.

To solve this problem, each of the first exposure holes 310 shaped according to the present invention to be a right has puckered shape and notches 312 , which at corresponding corners of the first exposure openings 310 are formed. If the scores 312 formed at the respective ends, as described above, the PTC elements 400 completely with the anode end 200 be brought into close contact, even if a slight dimensional error at the corners of the first exposure openings 310 occurs.

Furthermore, just like the first exposure holes 310 Also, the notches at corresponding corners of each of the second exposure openings 320 be formed to the close contact of the heat transfer blocks 500 with the anode end 200 to improve.

7 is a perspective view of the PTC rod assembly in accordance with the present invention, 8th is a sectional view of the PTC rod assembly along the line BB, which in 7 is shown, and 9 is a sectional view of the PTC rod assembly along the line CC, which in 7 is shown.

As in 8th Shown are both ends of the insulator 300 ie the preceding steps 330 in close contact with the inner surfaces of the upper PTC rod 600 and the lower PTC rod 100 brought, ie the bottom surface of the upper PTC rod 600 and the inner sidewall surfaces and the bottom surface of the lower PTC rod 100 , Furthermore, as in 9 is shown, a central part of the insulating means 300 into a gap between the two side panels of the lower PTC rod 100 is introduced and preferably at certain distances from the bottom surface of the lower PTC rod 100 and the bottom surface of the upper PTC rod 600 spaced so as not to interfere with the coupling of the lower PTC rod 100 with the upper PTC rod 600 to hinder.

The PTC elements 400 then be in the first exposure holes 310 used and the heat transfer blocks 500 be in the second exposure holes 320 used. Thus, the PTC elements 400 and the heat transfer blocks 500 be kept in a state in which they are in contact with the anode end without any additional fasteners 200 are.

The lower PTC rod 100 , the anode end 200 , the upper PTC rod 600 and the heat transfer blocks 500 are made of materials having a high thermal conductivity so that heat generated by the PTC elements can be transmitted to the outside. In particular, it is because the heat transfer blocks 500 to transfer heat, it is desirable to make the heat transfer blocks from a material having a high thermal conductivity, such as aluminum.

Because the PTC elements 400 in direct contact with the upper PTC rod 600 are and about the anode end 200 and the heat transfer blocks 500 in indirect contact with the lower PTC rod 100 When heat is generated by the PTC elements, by applying electric power to them, to the upper PTC rod 600 and the lower PTC rod 100 directed. Accordingly, as compared with a conventional PTC rod assembly in which an anode tip is spaced a certain distance from a lower PTC rod, the PTC rod assembly according to the present invention has significantly improved thermal conductivity. It is preferred that each of the heat transfer blocks 500 has a thickness smaller than that of each of the PTC elements 400 so that the heat generated by the PTC elements effectively on the lower PTC rod 100 can be transferred.

Although this embodiment is implemented such that the PTC elements 400 in contact with an upper surface of the anode end 200 are while the heat transfer blocks 500 in contact with a lower surface of the anode end 200 are, can the contact positions of the PTC elements 400 and the heat transfer blocks 500 with the anode end 200 be replaced.

Furthermore is in a preheater for a Vehicle having the above-described PTC rod assembly, the heat, which through the PTC elements is generated, quickly transferred to the outside. Thus, the power of the preheater, which is able to heat the interior of the vehicle, essential improved.

Of the preheater, which is a PTC rod assembly according to the present invention only differs from a conventional preheater through the internal structures of the PTC rod assemblies and with regard to the structures of their heat fin arrangements and housing identical to the conventional one Preheater. detailed Descriptions of the identical parts are omitted here.

Although the present invention has been described in conjunction with the preferred embodiments, the scope of the present invention is not limited to the specific embodiments thereof and should be determined by the appended claims. Furthermore, it should be understood by those skilled in the art, that various changes and modifications can be made without departing from the scope of the present invention.

Summary

The The present invention provides a PTC rod assembly comprising PTC elements for use in a preheater for a vehicle, and a preheater for a vehicle, which same includes. The PTC rod assembly has a lower PTC rod, which in the form of an elongated Channel is formed with an open side; an anode end, which is located within the lower PTC rod while it is from an insulating material is enclosed, which consists of an insulating material is made so that the anode end is not in contact with the lower PTC rod is; PTC elements which are designed such that they heat generate when electric power is applied to them and which are coupled to contact one side of the anode end be; Heat transfer blocks, which made of a material with a high thermal conductivity and which are in contact with the other side surface of the anode end to be brought; and an upper PTC rod which is coupled to the Cover open side of the lower PTC rod. According to the PTC rod assembly and the preheater for a Vehicle, which includes the same, the insulating means to Attach the anode end to a simpler structure and open up ordinary Fashion and efficiency in transmission of heat, which is generated by the PTC elements is improved.

Claims (8)

A bar assembly with a positive temperature coefficient (PTC) comprising PTC elements for use in a preheater for a vehicle, comprising: a lower PTC rod, which is in the form of a channel constructed with an open side; an anode end, which disposed within the lower PTC rod; an insulating agent, which is made of an insulating material and coupled, to enclose the anode end, wherein the insulating means is formed with first exposure openings the part of a side surface the anode end is exposed and second exposure openings exposed by the part of the other side surface of the anode end becomes; The PTC elements are each in the first exposure openings of the insulating agent used so that the PTC elements with the Anode end can be brought into contact; Heat transfer blocks, which each in second exposure openings be used of the insulating agent, so that the heat transfer blocks with the Anode end can be brought into contact; and an upper PTC rod, which is coupled to the open side of the lower PTC rod cover. The PTC rod assembly of claim 1, wherein the anode end and the insulating agent by a dual injection molding process be integrally formed with each other. The PTC rod assembly according to claim 1 or 2, wherein the insulating agent at certain distances from a bottom surface of the lower PTC rod and a lower surface the upper PTC rod is spaced. The PTC rod assembly according to claim 1 or 2, wherein the insulating means has projecting steps, which at both Ends of which are formed, and wherein the protruding steps in close contact with the inner surfaces of the lower PTC rod and the upper PTC rod to be brought. The PTC rod assembly according to claim 1 or 2, wherein each of the first and second exposure openings is shaped such that it has a rectangular shape and notches, which at corresponding Corners are formed of it. The PTC rod assembly according to claim 1 or 2, wherein the heat transfer blocks a thickness which is smaller than that of the PTC elements. The PTC rod assembly according to claim 1 or 2, wherein the heat transfer blocks aluminum exhibit. A preheater for a Vehicle comprising the PTC rod assembly according to claim 1 or 2.