JP3213748U - Electric heating device - Google Patents

Abstract

An electric heater structure is provided. A structure of an electric heater comprising a pair of insulating heat conductive plates 2a, 2b, one PTC heating module 1, one outer case 3, and a pair of waterproof covers. The PTC heating module 1 is held between two insulating heat conducting plates 2a and 2b. The outer case 3 accommodates the PTC heating module 1 and the two insulating heat conducting plates 2a and 2b, and has two open ends 37 and 38. The two waterproof covers include a first waterproof cover 5a and a second waterproof cover 5b that cover the two open ends 37 and 38 of the outer case 3, respectively. This achieves the purpose of avoiding the removal of the waterproof adhesive under the influence of water during use, and ensures the waterproof effect. [Selection] Figure 3

Description

  The present invention relates to a structure of a kind of heating device, and more particularly to a structure of a kind of electric heating device using a PTC heating module.

  A PTC heating module refers to a heating module that uses a positive temperature coefficient (PTC) heating component.

  Many of the environments where electric heaters are used come in contact with water or are immersed in water (for example, used in clothes dryers or washing machines having a function with a dryer), so it is necessary to provide a waterproof function.

  The existing electric heating device includes one hollow pipe, one PTC heating module housed in the hollow pipe, and two heat spreaders installed in the hollow pipe, and the PTC heating module in the hollow pipe In order to perform waterproofing, a waterproof adhesive is filled at both ends of the hollow pipe.

  However, since the electric heating device comes into contact with water or is immersed in water, the waterproof adhesive that is directly exposed to the outside is gradually affected by the influence of water (for example, washing with a brush), and finally it is removed. In view of the fact that the waterproof adhesive loses the waterproofing effect because the gap is formed and the water soaks in, and that the PTC heating module is short-circuited with water, it has been accused before. Improvement was needed.

Special Table 2013-528482

  In order to solve the drawbacks of the known structure, the present invention closes the two open ends of the outer case with a waterproof cover, so that it is possible to avoid taking off the waterproof adhesive under the influence of water during use, It is a main object to provide a structure of an electric heating device that ensures a waterproof effect.

  In order to solve the above problems, the present invention provides an electric heating device. Included are a pair of insulating heat conducting plates, one PTC heating module, one outer case and a pair of waterproof covers. One PTC heating module is sandwiched between the pair of insulating heat conducting plates. The PTC heating module and the pair of insulating heat conduction plates are accommodated in one outer case and have two open ends. The pair of waterproof covers include a first waterproof cover and a second waterproof cover that cover the two open ends of the outer case, respectively. Compared to the prior art, the effect of the present invention is: The waterproof cover can close the two open ends of the outer case for waterproofing, thus avoiding the removal of waterproof adhesive under the influence of water during use Can ensure waterproof effect.

  With the structure of the present invention, it is possible to waterproof by closing the two open ends of the outer case with a waterproof cover, so that it is possible to avoid taking off the waterproof adhesive under the influence of water during use, and the waterproof effect Secure.

It is a three-dimensional exploded view of the first embodiment of the electric heating device of the present invention. It is a local three-dimensional exploded view of the first embodiment of the electric heating device of the present invention. It is the three-dimensional exploded view after the local assembly of the first embodiment of the electric heating device of the present invention. It is a three-dimensional assembly drawing of the first embodiment of the electric heating device of the present invention. It is one sectional drawing of the 1st Example of the electric heating apparatus of this invention. It is another sectional drawing of the 1st Example of the electric heating apparatus of this invention. It is a local section schematic diagram of the second example of the electric heating device of the present invention.

  The detailed description and technical contents of the present invention will be described below with reference to the drawings. The accompanying drawings are for reference and explanation and do not limit the present invention.

  As for the electric heating device provided by the present invention, FIGS. 1 to 6 show a first embodiment of the present invention, and FIG. 7 shows a second embodiment of the present invention.

  As shown in FIGS. 1 to 5, the first embodiment of the electric heating device of the present invention includes: one PTC heating module 1, a pair of insulating heat conducting plates, one outer case 3 and a pair of waterproofing. It is a cover. Specifically, a pair of electrical connection components 6 and a pair of heat diffusion modules 7 are further included.

  The first insulating heat conducting plate 2a and the second insulating heat conducting plate 2b are included in the pair of two insulating heat conducting plates. Among them, the first insulating heat conductive plate 2a and the second insulating heat conductive plate 2b are both objects made of aluminum oxide, aluminum nitride, silicon nitride, or silicon carbide.

  As shown in FIG. 2, the PTC heating module 1 is sandwiched between the first insulating heat conducting plate 2a and the second insulating heat conducting plate 2b like a sandwich. Among them, the PTC heating module 1 includes at least one PTC heating unit 11 sandwiched between the pair of electrode plates 12 and the two electrode plates 12. As shown in FIGS. 1 and 2, the number of PTC heating units 11 is not limited in the present invention. In this embodiment, a description will be given by taking a large number of PTC heating units 11 as an example. The PTC heating units 11 are linearly parallel to each other.

  The outer case 3 can be a single-piece hollow pipe (not shown in the figure), and the PTC heating module 1, the first insulating heat conducting plate 2a and the second insulating heat conducting plate which are already stacked in a sandwich shape inside each other. 2b is stored. As shown in FIG. 3, the outer case 3 further includes two open ends, and includes one first open end 37 and one second open end 38, so that the PTC heating module 1 is provided with the first open end. Only the end 37 and the second opening end 38 are exposed to the outside. In addition, the outer case 3 can be an object made of aluminum or an aluminum alloy material.

  A pair of two waterproof covers includes one first waterproof cover 5a and one second waterproof cover 5b. The first waterproof cover 5a covers the outside of the outer case 3 corresponding to the first opening end 37, and the second waterproof cover 5b covers the outside of the outer case 3 corresponding to the second opening end 38, respectively. By closing the first opening end 37 and the second opening end 38 of the case 3, the PTC heating module 1 is closed and waterproofed between the outer case 3, the first waterproof cover 5a and the second waterproof cover 5b. Among them, the first waterproof cover 5a and the second waterproof cover 5b can be soft type lids such as a rubber sealing lid or a silicone sealing lid.

  The pair of two electrical connection components 6 are electrically connected to the two electrode plates 12 via the first opening end 37, respectively, and the two electrical connection components 6 are inserted into and coupled to the first waterproof cover 5a. As the best embodiment, one end of the two electrical connecting parts 6 can electrically configure one electrical connector 61, which is easy to make an electrical connector and has convenience.

  The pair of two heat diffusion modules 7 are respectively affixed to any location of the outer case 3, and specifically, are respectively affixed to both opposite surfaces (for example: top surface and bottom surface) of the outer case 3. Among them, as shown in FIG. 3, the heat diffusion module 7 includes a pair of fixed plates (not labeled) and one fin set (not labeled) installed between the two fixed plates.

  As shown in FIG. 6 and FIGS. 1 to 3, the outer case 3 can have the above-described single piece hollow pipe structure (not shown in the figure), and further to a two-piece combination structure as shown in the figure. can do. Details are as follows.

  Included in the outer case 3 that can be a two-piece combination structure is one first side jig 3a and one second side jig 3b. As the best embodiment, the first side jig 3 a and the second side jig 3 b are opposed to each other, and all have one upper collar plate 31, one lower collar plate 32 and one connection portion 33. The connection portion 33 connects one side of the upper flange plate 31 and one side of the lower flange plate 32, thereby forming a single pin 34 by the upper flange plate 31, the lower flange plate 32, and the connection portion 33. That is, the shape of the first side jig 3a is a horizontal U-shape, and the shape of the second side jig 3b is opposite to the shape of the first side jig 3a. The PTC heating module 1 has two sides facing each other, and includes one first side 101 and one second side 102 as shown in FIG. Each of the first insulating heat conducting plate 2a and the second insulating heat conducting plate 2b has two opposite sides, and as shown in FIGS. 1, 2 and 6, one first side 21 is provided. And one second side 22.

  Therefore, the 1st side jig | tool 3a respond | corresponds to the two 1st sides 101 and 21, and pinches and presses the left half part of the PTC heating module 1 and the 1st, 2nd insulated heat conductive plates 2a and 2b. The second side jig 3b corresponds to the two second sides 102 and 22, and holds the first half of the PTC heating module 1 and the first and second insulating heat conducting plates 2a and 2b, and presses and compresses the first half. The upper side plate 31 of the one side jig 3a and the upper side plate 31 of the second side jig 3b are parallel to each other, and both hold the upper holding surface 25 of the first insulating heat conductive plate 2a, and the first side jig The lower support plate 32 of 3a and the lower support plate 32 of the second side jig 3b are arranged in parallel with each other and can hold the lower support surface 26 of the second insulating heat conductive plate 2b. By doing so, the left half of the stored item (refers to an object stored in the outer case 3. This object is a combination of the PTC heating module 1 and the first and second insulating heat conductive plates 2a and 2b). The PTC heating module 1, the first insulating heat conduction plate 2a, and the second insulating heat are used to tightly hold the portion and the right half portion in the pin 34 of the first side jig 3a and the second side jig 3b, respectively. The overlapping state between the conductive plates 2b overlaps more closely, increasing the efficiency of heat conduction. What should be explained is that the upper and lower support plates 31 and 32 of the first and second side jigs 3a and 3b are the upper support surface 25 and the lower support surface 26 of the above-mentioned two insulating heat conductive plates. Because they overlap closely each other, it is easy to conduct heat.

  In addition, each of the first waterproof cover 5a and the second waterproof cover 5b has one recess 51, 52, and the recess 51 accommodates and restrains the first opening end 37 of the outer case 3. The recess 52 accommodates and restrains the second opening end 38 of the outer case 3 so that the first and second waterproof covers 5a and 5b also have a restraining orientation. The two side jigs 3b are constrained to be in parallel with each other, and the first side jig 3a and the second side jig 3b are prevented from being separated from each other and displaced.

  As shown in FIGS. 1, 3, and 5, the second waterproof cover 5 b can further include one convex portion 53 that protrudes corresponding to the concave portion 52, whereby the first insulating heat is applied to the convex portion 53. One end of the conductive plate 2a and the second insulating heat conductive plate 2b (pointing to the left end shown in FIG. 5) can be inserted, and the ends of the first insulating heat conductive plate 2a and the second insulating heat conductive plate 2b are outside. Together with the second opening end 38 of the case 3, it can be inserted into the second waterproof cover 5 b and the convex portion 53 together with the concave portion 52. If it does in this way, the 2nd waterproof cover 5b will have the effect of being localized to the outer case 3 firmly.

  As shown in FIG. 7, the second embodiment of the electric heating device of the present invention is roughly the same as the first embodiment described above, and the only difference is that the oxygen-containing space G is further increased. Details are as follows.

  In order to form one oxygen-containing space G between the first waterproof cover 5a, the first opening end 37 and one end of the PTC heating module 1, and the second waterproof cover 5b, the second opening end 38 and the PTC heating. In order to form another oxygen-containing space G separately from the other end of the module 1, the outer case 3 can be lengthened, whereby the first open end 37 is connected to the first insulating heat conducting plate 2a and the second end. One protruding length D (see FIG. 7) protrudes from one end of the insulating heat conducting plate 2b, and the second open end 38 is a separate end of the first insulating heat conducting plate 2a and the second insulating heat conducting plate 2b. One protruding length D (not shown in FIG. 7) protrudes. Thus, two oxygen-containing spaces G that can store more air are formed. The protruding length D can be set to 0.1 mm to 0.3 mm.

  Through the oxygen-containing space G to be added, the characteristics of the PTC heating unit 11 can be improved with more oxygen and the life can be extended.

  In summary, the present invention has the following effects compared to the prior art: the first waterproof cover 5a and the second waterproof cover 5b close the first open end 37 and the second open end 38 of the outer case 3, respectively. By waterproofing, it is possible to avoid taking off the waterproof adhesive under the influence of water during use, ensuring a waterproof effect.

  In addition, the present invention has other effects: the outer case 3 is connected to the PTC heating module 1 and the first insulation through a two-piece combination structure including the first side jig 3a and the second side jig 3b. The overlapping state between the heat conductive plate 2a and the second insulating heat conductive plate 2b can be tightened. In addition, the upper and lower support plates 31 and 32 of the first and second side jigs 3a and 3b are also closely overlapped with the upper support surface 25 and the lower support surface 26 of the above-mentioned two insulating heat conductive plates, respectively. Increase conduction efficiency. By increasing the oxygen-containing space G, the characteristics of the PTC heating unit 11 can be improved with more oxygen and the life can be extended.

  The outer case 3 having a hollow pipe structure belonging to a single piece not shown in the drawing needs to store the above-mentioned storage items in the outer case 3. In order to tightly store the stored items in the outer case 3, the stored items need to be appropriately smaller than the outer case 3. Therefore, the heat conduction efficiency of the outer case 3 belonging to the two-piece combination structure is necessarily superior to the heat conduction efficiency of the outer case 3 of the hollow pipe structure belonging to the single piece.

  The detailed description of the present invention according to the above embodiments does not limit the scope of the present invention. Those who are familiar with this technology can make appropriate changes and adjustments, such as changes in the fixing structure, and these changes and adjustments do not lose the significance of the present invention and are included in the scope of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 PTC heating module 101 1st side 102 2nd side 11 PTC heating unit 12 Electrode plate 2a 1st insulation heat conduction plate 2b 2nd insulation heat conduction plate 21 1st side 22 2nd side 25 Upper clamping surface 26 Lower clamping Surface 3 Outer case 3a First side jig 3b Second side jig 31 Upper collar plate 32 Lower collar plate 33 Connection portion 34 First opening end 38 Second opening end 5a First waterproof cover 5b Second waterproof cover 51, 52 Concavity 53 Convex 6 Electrical connection component 61 Electrical connector 7 Thermal diffusion module D Protruding length G Oxygen-containing space

Claims (11)

A pair of insulating heat conducting plates 2a, 2b, one PTC heating module 1, one outer case 3, and a pair of waterproof covers 37, 38;
The one PTC heating module 1 is held between the pair of insulating heat conducting plates,
The one outer case 3 accommodates the PTC heating module and the pair of insulating heat conducting plates, and has two open ends 37 and 38, and
A pair of waterproof covers each include a first waterproof cover 5a and a second waterproof cover 5b that cover the two open ends 37 and 38 of the outer case, respectively. Construction.   2. The structure of the electric heating device according to claim 1, wherein each of the pair of waterproof covers is one rubber sealing lid or one silicone sealing lid.   The PTC heating module 1 further includes a pair of electrical connection components 6, and the PTC heating module 1 includes a pair of electrode plates 12 and at least one PTC heating unit 11 sandwiched between the pair of electrode plates. The component 6 is electrically connected to the electrode plate 12 and one of the two open ends 37 and 38, respectively, and the pair of electrical connection components 6 are inserted into and coupled to the first waterproof cover 5a. The structure of the electric heating device according to claim 1.   The structure of the electric heating apparatus according to claim 1, further comprising a pair of heat diffusion modules (7), wherein the pair of heat diffusion modules are respectively attached to the outer case (3).   The outer case 3 includes one first side jig 3a and one second side jig 3b, and the PTC heating module 1 and the pair of insulating heat conductive plates 2a and 2b are each provided with two sides 101. , 102, 21 and 22, the first side jig and the second side jig are respectively held in correspondence with the two sides, and the PTC heating module and the pair of insulating heat conduction plates The structure of the electric heating device according to claim 1, wherein:   Each of the first side jig and the second side jig has one upper collar plate 31, one lower collar plate 32, and one connecting portion 33 for connecting the upper collar plate and the lower collar plate, Each of the pair of insulating heat conducting plates has one upper holding surface 25 and one lower holding surface 26, and each of the upper side plates 31 of the first side jig 3a and the second side jig 3b is respectively 6. The upper clamping surface 25 is clamped, and each of the lower clamping plates 32 of the first side jig and the second side jig clamps the lower clamping surface 26, respectively. The structure of the electric heating apparatus as described.   6. The electric heating device according to claim 5, wherein the shape of the first side jig is a U-shaped sideways, and the shape of the second side jig is opposite to the shape of the first side jig. Structure.   Each of the pair of waterproof covers 5a and 5b has a single recess 52, and the two open ends 37 and 38 of the outer case 3 are respectively stored in the two recesses and restrained. The structure of the electric heating device according to claim 1 or 5.   The second waterproof cover 5b further includes a single convex portion 53 that protrudes in correspondence with the concave portion 52, and one end of the pair of insulating heat conductive plates 2a and 2b is inserted into the convex portion, and the pair of insulating plates The end of the heat conducting plate is inserted into the second waterproof cover and the convex portion corresponding to the concave portion 52 together with the one open end 38 of the outer case. Structure of electric heating device.   The structure of the electric heating device according to claim 1, wherein one oxygen-containing space G is formed between the two open ends and both ends of the PTC heating module. The structure of the electric heating device according to claim 10, wherein the two open ends 37, 38 of the outer case protrude from both ends of the respective one of the insulating heat conducting plates 2a, 2b.