TWM511174U - Ceramic heater with increased receiving wind area - Google Patents

Description

Ceramic heater with increased wind receiving area

The present invention relates to a ceramic heater, and more particularly to a ceramic heater having an increased wind receiving area.

The existing positive temperature coefficient (PTC) is a hard heating element. When it is energized, it heats up to make the resistance value enter the transition zone. In a certain temperature range, the resistance value increases rapidly with the temperature rise. The PTC heating element is made by adding a small amount of rare earth elements to a material such as barium carbonate or titanium dioxide by high temperature sintering, and maintains a stable low resistance value in a wide temperature range until the temperature is higher than the material's Curie temperature (Tc). When it is, its resistance value will increase greatly. Therefore, PTC heating elements have been widely used in thermostatic heaters, household appliances, vehicle air conditioning heating and line protection devices.

The conventional heater mainly includes a PTC heating element, a pair of electrode sheets and a plastic frame, and the PTC heating element is housed in the plastic frame. The pair of electrode sheets are attached to both sides of the plastic frame and electrically connected to the PTC heating element, so that the PTC heating element can pass through the electrode sheets to obtain external power. When the current passes through the PTC heating element, the PTC heating element heats up, thereby achieving the heating effect.

Since the conventional conductive terminal and the electrode piece are parallel to each other and electrically connected to the externally connected plug terminal, heat is accumulated between the conductive terminal and the plugged terminal, and heat is not easily generated, thereby causing danger. In view of this, how to dissipate the heat generated between the conductive terminals and the plug terminals is the direction that the creator wants to study and improve.

One of the purposes of the present invention is to provide a ceramic heater having an increased wind receiving area that accelerates the heat dissipation effect, increases the wind receiving area, and the hot air blowing effect, so that the temperature of the conductive terminal itself does not accumulate.

To achieve the above object, the present invention provides a ceramic heater having an increased wind receiving area, comprising a conductive heat sink, at least one PTC heating element, and an electrode plate. The conductive heat sink includes a heat sink fin. At least one PTC heating element is disposed on one side of the heat dissipation fin. The electrode plate is disposed on the other side of the heat dissipation fin, and a conductive terminal is protruded from one end of the electrode plate. The conductive terminal has a twisted section and a straight section connecting the twisted sections, wherein a portion of the twisted section and the straight section extend in a direction perpendicular to the extending direction of the electrode sheet.

Preferably, the conductive heat sink further comprises a heat conducting plate disposed on the other side of the heat radiating fin opposite to the electrode plate, and the PTC heating element is attached to the heat conducting plate.

Preferably, the heat dissipation fin is a wave fin, and the adjacent wave fin is further formed with a heat dissipation channel. A cold air is further formed in parallel through each of the heat dissipation channels to form a hot air, and the cold air is perpendicular to the extending direction of the conductive terminals to reduce the temperature of the conductive terminals during operation.

Another broad aspect of the present invention also provides a ceramic heater having an increased wind receiving area, including a pair of electrically conductive fins, a ceramic frame, and a pair of electrode plates. The pair of conductive heat dissipating members respectively comprise a heat dissipating fin and a heat conducting plate attached to one side of the heat dissipating fin. The ceramic frame is disposed between the pair of conductive heat sinks, and the ceramic frame comprises at least one PTC heating element, wherein the two surfaces of the PTC heating element respectively adhere to the surfaces of the heat conducting plates. The pair of electrode plates are respectively disposed on one side of the opposite heat conducting plate, and one end of each electrode plate further protrudes with a conductive terminal. Each of the conductive terminals has a twisted section and a straight section connecting the twisted sections, wherein a portion of the twisted section and the straight section extend in a direction perpendicular to the extending direction of the electrode sheet.

Preferably, the ceramic frame further includes a first surface, a second surface, and a receiving hole passing through the first surface and the second surface, the receiving hole is for fixing the PTC heating element, and the first The surface and the second surface are respectively attached to the heat conducting plates.

Preferably, the method further includes a pitch formed between the conductive terminals of each of the electrode plates, and each of the conductive terminals is disposed opposite to each other.

Preferably, each of the conductive terminals further has a bent portion bent toward the PTC heating element, and the bent portion is connected upright to the electrode sheet, wherein the other end of each of the bent portions further connects the twists segment.

Preferably, the width of the straight section is greater than the width of the twisted section, and the length of the straight section is less than or equal to the length of the twisted section. The width and length of each straight section are 8 mm.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

1 is a perspective exploded view showing a first preferred embodiment of the present creation. As shown, the present invention provides a ceramic heater 100 having an increased wind receiving area, including a conductive heat sink 110, at least one PTC heating element 210, and an electrode plate 300, wherein the conductive heat sink 110 includes a heat sink fin 120. At least one PTC heating element 210 made of a positive temperature coefficient ceramic material is disposed on one side of the heat dissipation fin 120.

As shown in FIG. 1 , the electrode plate 300 is disposed on the other side of the heat dissipation fin 120 , and a conductive terminal 310 is protruded from one end of the electrode plate 300 . The conductive terminal 310 has a twisted section 312 and a straight section 314 connecting the twisted section 312, wherein a portion of the twisted section 312 and the straight section 314 extend in a direction perpendicular to the extending direction of the electrode sheet 300.

In this embodiment, the conductive terminal 310 further has a bent portion 316 bent toward the PTC heating element 210, and the bent portion 316 is connected upright to the electrode sheet 300, wherein the other end of the bent portion 300 is further connected to the twisted portion. 312. The width and length of the straight section 314 described herein are preferably 8 mm and the twisted section 312 is 9 mm. In other various embodiments, however, the width and length of the straight section 314 may also be greater than or less than 8 mm, and the length of the twisted section 312 is not limited to 9 mm, as needed or varied.

In addition, the conductive heat sink 110 further includes a heat conducting plate 130 disposed on the other side of the heat sink fin 120 opposite to the electrode plate 300, and the PTC heating element 210 is preferably attached to the heat conducting plate 130. That is, the PTC heating element 210 and the heat conducting plate 130 are respectively disposed on opposite sides of the heat dissipation fin 120. The heat dissipating fins 120 are preferably integrally formed with a wavy fin 140 to increase the contact area of the fins with the air and increase the heat exchange effect, thereby improving the heating effect of the present invention. Adjacent undulating fins 140 are also formed with a heat dissipating passage 150. Therefore, the PTC heating element 210 and the heat conducting plate 130 are respectively attached to the opposite sides of the undulating fins 140 to form a bend (not shown).

When the ceramic heater 100 is energized to generate heat, a cold air 160 passes through the heat dissipation passages 150 in parallel, and the heat on the heat dissipation fins 130 is taken away to form a hot air 170. As shown in the figure, the direction of the cold air 160 is preferably perpendicular to the extending direction of the conductive terminal 310 to reduce the temperature of the conductive terminal 310 during operation, so that the wind receiving area and the hot air 170 are blown out and accelerated to dissipate heat, so that the conductive terminal 310 is provided. The temperature itself does not accumulate.

Another broader embodiment of the present invention also provides a ceramic heater having an increased wind receiving area, as shown in Figures 2 through 5. The ceramic heater 100 of the present embodiment includes a pair of conductive heat sinks 110, a ceramic frame 200, and a pair of electrode plates 300. The pair of conductive fins 110 respectively include a heat dissipating fin 120 and a heat conducting plate 130 attached to one side of the heat dissipating fin 120. The ceramic frame 200 is disposed between the pair of conductive heat dissipating members 110. The ceramic frame 200 includes at least one PTC heating element 210. The two surfaces of the PTC heating element 210 are respectively attached to the surfaces of the heat conducting plates 130 to transfer heat to the surface. Each of the heat dissipation fins 120.

As shown in FIG. 2 and FIG. 4 , the ceramic frame 200 further includes a first surface 202 , a second surface 204 , and a receiving hole 206 passing through the first surface 202 and the second surface 204 . The accommodating hole 206 is for fixing the PTC heating element 210, and the first surface 202 and the second surface 204 are respectively attached to the heat conducting plates 130. In addition, the heat dissipation fins 120 are preferably a wavy fin 140 capable of increasing the contact area with air to increase the heat exchange effect, thereby improving the heating effect of the embodiment. Adjacent wavy fins 140 are also formed with a heat dissipation channel 150. Therefore, the PTC heating element 210 and the heat conducting plate 130 are respectively attached to the opposite sides of the wavy fin 140 to form a bend (not shown).

The pair of electrode plates 300 are respectively disposed on one side of the opposite heat conducting plate 130, and a conductive terminal 310 is protruded from one end of each of the electrode plates 300. Each of the conductive terminals 310 has a twisted section 312 and a straight section 314 connecting the twisted sections 312, wherein a portion of the twisted section 312 and the straight section 314 extend in a direction perpendicular to the extending direction of the electrode sheet 300.

As shown in FIG. 3, when the PTC heating elements 210 are energized to generate heat and transfer heat to the respective conductive fins 110, a cold air 160 passes through the heat dissipation passages 150 in parallel, and the heat on the heat dissipation fins 130 is taken away. A hot air 170 is formed. The direction of the cold air 160 is preferably perpendicular to the extending direction of the conductive terminal 310, so that the wind receiving area and the hot air 170 blowing effect can be increased, the temperature of the conductive terminal 310 during operation is lowered, and the heat dissipation effect is accelerated, so that the temperature of the conductive terminal 310 itself is made. Does not accumulate, which in turn increases the useful life.

As shown in FIGS. 4 and 5, a pitch D for connecting to each external power supply terminal 350 is also included. The pitch D is formed between the conductive terminals 310 of the respective electrode plates 300, and the respective conductive terminals 310 are disposed corresponding to each other. When the straight segments 314 of the conductive terminals 310 are electrically coupled to the external power terminals 350 (ie, the positive and negative terminals of the external power source), the pair of conductive terminals 210 have the same protruding direction for facilitating connection with the external power source (not shown). )connection. However, in other different embodiments, the protruding directions of the respective conductive terminals 310 may be reversed to avoid short-circuiting and short-circuiting of the distance D from each other, as needed.

In addition, each of the conductive terminals further has a bent portion 316 bent toward the PTC heating element 210, wherein the bent portion 316 is connected upright to the electrode sheet 300, and the other end is directly connected to each of the twisted segments 312. As shown in Figures 4 and 5, the width of the straight section 314 (i.e., the Y direction) is preferably greater than the width of the twisted section 312, and the length of the straight section 314 (i.e., the X direction) is preferably less than or equal to the distortion. The length of the segment 312 is convex.

In particular, each of the straight sections 314 preferably has a width and length of 8 mm, and each of the twisted sections has a length of 9 mm. In other various embodiments, however, the width and length of the straight section 314 may also be greater than or less than 8 mm, and the length of the twisted section 312 is not limited to 9 mm, as needed or varied.

In summary, the embodiments disclosed herein are to be considered as illustrative of the present invention and are not intended to limit the present invention. The scope of this creation is defined by the scope of the appended patent application and covers its legal equivalents and is not limited to the foregoing description.

100‧‧‧Ceramic heater

110‧‧‧Electrical heat sink

120‧‧‧Heat fins

130‧‧‧heat conducting plate

140‧‧‧Wave fins

150‧‧‧heating channel

160‧‧‧ cold wind

170‧‧‧ hot air

200‧‧‧Ceramic frame

202‧‧‧ first surface

204‧‧‧Second surface

206‧‧‧ accommodating holes

210‧‧‧PTC heating element

300‧‧‧electrode plate

310‧‧‧Electrical terminals

312‧‧‧distorted section

314‧‧‧ Straight section

316‧‧‧Bend

350‧‧‧External power terminals

D‧‧‧ spacing

1 is a perspective exploded view showing a first preferred embodiment of the present creation.

2 is a perspective exploded view showing a second preferred embodiment of the present creation.

FIG. 3 is a perspective assembled view showing a second preferred embodiment of the present invention.

4 is a cross-sectional view showing a second preferred embodiment of the present creation.

FIG. 5 is a cross-sectional view showing the second preferred embodiment of the present invention connected to an external power supply terminal.

100‧‧‧Ceramic heater

110‧‧‧Electrical heat sink

120‧‧‧Heat fins

130‧‧‧heat conducting plate

140‧‧‧Wave fins

150‧‧‧heating channel

160‧‧‧ cold wind

170‧‧‧ hot air

210‧‧‧PTC heating element

300‧‧‧electrode plate

310‧‧‧Electrical terminals

312‧‧‧distorted section

314‧‧‧ Straight section

316‧‧‧Bend

Claims (13)

A ceramic heater having an increased wind receiving area, comprising: a conductive heat sink comprising a heat sink fin; at least one PTC heating element disposed on one side of the heat sink fin; and an electrode plate disposed on the heat sink fin On the other side of the sheet, a conductive terminal is protruded from one end of the electrode plate, and the conductive terminal has a twisted section and a straight section connecting the twisted section, wherein a part of the twisted section and the extending direction of the straight section The electrode sheet extends in a direction perpendicular to the electrode. The ceramic heater of claim 1, wherein the conductive heat sink further comprises a heat conducting plate, the heat conducting plate is disposed on the other side of the heat radiating fin opposite to the electrode plate, and the PTC heating element is attached to the ceramic heater Thermal plate. The ceramic heater of claim 1, wherein the conductive terminal further has a bent portion bent toward the PTC heating element, the bent portion being connected upright to the electrode sheet. The ceramic heater of claim 3, wherein the other end of the bent portion is further connected to the twisted section. The ceramic heater of claim 1, wherein the width of the straight section is greater than the width of the twisted section, and the length of the straight section is greater than or equal to the length of the twisted section. The ceramic heater of claim 5, wherein the straight section has a width of 8 mm and the length of the straight section is 8 mm. A ceramic heater having an increased wind receiving area, comprising: a pair of conductive heat dissipating members, each of the conductive heat dissipating members respectively comprising a heat dissipating fin and a heat conducting plate attached to one side of the heat dissipating fin; a ceramic frame, Between the pair of conductive heat dissipating members, the ceramic frame includes at least one PTC heating element, the two surfaces of the PTC heating element are respectively attached to the surfaces of the heat conducting plates; and a pair of electrode plates, each of the electrode plates respectively And a conductive terminal is protruded from one end of each of the electrode plates, and each of the conductive terminals has a twisted section and a straight section connecting the twisted section, wherein the twisted section of the portion The extending direction of the straight section is perpendicular to the extending direction of the electrode sheet. The ceramic heater of claim 7, wherein the ceramic frame further comprises a first surface, a second surface, and a receiving hole passing through the first surface and the second surface, the receiving hole is fixed The PTC heating element, and the first surface and the second surface are respectively attached to the heat conducting plates. The ceramic heater according to claim 7, further comprising a pitch formed between the conductive terminals of each of the electrode plates, and each of the conductive terminals is disposed opposite to each other. The ceramic heater of claim 7, wherein each of the conductive terminals further has a bent portion bent toward the PTC heating element, the bent portion being connected upright to the electrode sheet. The ceramic heater of claim 10, wherein the other end of each of the bent portions is further connected to each of the twisted segments. The ceramic heater of claim 7, wherein the width of the straight section is greater than the width of the twisted section, and the length of the straight section is less than or equal to the length of the twisted section. The ceramic heater of claim 12, wherein each of the straight sections has a width of 8 mm, and each of the straight sections has a length of 8 mm.