CN215773599U - PTC electric heater and heating device - Google Patents

Abstract

The utility model discloses a PTC electric heater and a heating device, relates to the technical field of heating, and solves the technical problem that the matching success rate of the heating quantity of the PTC electric heater and the heating quantity required by the heating device in the prior art is low. The PTC electric heater comprises a support mechanism and an electric heating mechanism, wherein the electric heating mechanism comprises a radiating fin component and a heating component, and the radiating fin component is arranged on two sides of the heating component; the support mechanism is arranged at two ends of the electric heating mechanism and is rotatably connected with the electric heating mechanism, and a ratchet wheel assembly is arranged on the support mechanism and is used for adjusting the mounting angle of the electric heating mechanism so as to adjust the head-on wind speed of the electric heating mechanism. The PTC electric heater not only can adjust the heating capacity of the PTC electric heater and improve the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by a heating device, but also has the advantages of unlimited installation space and low cost.

Description

PTC electric heater and heating device

Technical Field

The utility model relates to the technical field of heating, in particular to a PTC electric heater and a heating device comprising the same.

Background

The PTC electric heater is an automatic constant-temperature and power-saving electric heater, has the advantages of small thermal resistance and high heat exchange efficiency, can not generate the phenomenon of reddening on the surface of an electric heating tube heater under any application condition, and can avoid potential safety hazards such as fire hazard. Therefore, many heating devices use PTC electric heaters to perform heating functions, such as air conditioners, fan heaters, and the like. However, PTC electric heaters also have disadvantages in specific applications. Particularly, the electric heating tube type heater is applied, so that the heating capacity of the heating device can be developed and completed at one time; when the PTC electric heater is used as a heater of a heating device, according to the situation of each matching test of a newly developed PTC heating device, the PTC electric heater made by a manufacturer based on product requirement requirements basically cannot meet the requirements of the heating device at one time, and the power universality of the PTC electric heater is higher or lower, so that the success rate of matching the PTC electric heater and the heating device is reduced. In this case, the manufacturer is required to reduce or increase the power of the PTC electric heater again to meet the requirement of the heating device, and as a result, a lot of time is required to match the heating amount, which results in a large waste of time and resources.

Patent publication No. CN111089421A discloses a heating device, which utilizes a stepping motor to drive a PTC heating element to rotate, and adjusts the head-on air speed of the PTC heating element, thereby adjusting the heating capacity of the PTC heating element. However, the patent has the following disadvantages: (1) the PTC heating element is driven by the motor to rotate, a certain installation space is required to be provided by the whole heating device, and the PTC heating element is not suitable for occasions with smaller installation space; (2) the PTC heating body is driven to rotate by the motor, and related products of a series of control motors such as wires and electrical elements can be added, so that the cost is high; (3) although the PTC heating element can change the heating amount of the heating device, the power of the PTC electric heater cannot be changed, and the PTC heating element is not suitable for occasions with strict requirements on power of customers.

Therefore, there is an urgent need for improvement of the related art PTC electric heater and the method of adjusting the heating amount thereof.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the present invention is to provide a PTC electric heater and a heating device, which solves the technical problem of low matching success rate between the heating capacity of the PTC electric heater and the heating capacity required by the heating device in the prior art. The various technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

In order to achieve the purpose, the utility model provides the following technical scheme:

the PTC electric heater comprises a support mechanism and an electric heating mechanism, wherein the electric heating mechanism comprises a heat dissipation sheet assembly and a heating assembly, and the heat dissipation sheet assembly is arranged on two sides of the heating assembly; the support mechanism is arranged at two ends of the electric heating mechanism and is rotatably connected with the electric heating mechanism, and a ratchet wheel assembly is arranged on the support mechanism and is used for adjusting the installation angle of the electric heating mechanism so as to adjust the head-on wind speed of the electric heating mechanism.

According to a preferred embodiment, the heat sink assembly comprises a plurality of heat sinks, a plurality of the heat sinks are connected in a nesting mode, and the electric heating mechanism is enabled to adjust the heat dissipation area of the electric heating mechanism by increasing or decreasing the number of the heat sinks.

According to a preferred embodiment, the heating component comprises an insulating aluminum groove, a heating element and an inserting piece element, the heating element is placed in the insulating aluminum groove, the heating element comprises a plurality of electrode plates and a plurality of ceramic plates, the ceramic plates are arranged side by side, and the electrode plates are attached to the ceramic plates and arranged at intervals; the inserting piece element comprises a conductive inserting piece and an insulating inserting piece, the conductive inserting piece and the insulating inserting piece are inserted between two adjacent electrode pieces and are in contact with the electrode pieces on two sides, and the heating component can adjust the heating power of the ceramic piece by increasing or reducing the number of the conductive inserting piece and the insulating inserting piece.

According to a preferred embodiment, the support mechanism comprises a first support mechanism and a second support mechanism, the first support mechanism and the second support mechanism are respectively rotatably connected with two ends of the electric heating mechanism, and the ratchet wheel assembly is arranged on the second support mechanism.

According to a preferred embodiment, the first supporting seat mechanism comprises a first shaft seat and a first end shaft, a first mounting hole is formed in the first shaft seat, the first end shaft is provided with a first mounting portion, a second mounting portion and a first fixing hole, the first mounting portion is rotatably mounted in the first mounting hole, and the second mounting portion and the first fixing hole are used for mounting and fixing the electric heating mechanism.

According to a preferred embodiment, the second support mechanism comprises a second shaft seat and a second end shaft, the second shaft seat is provided with a second mounting hole and a third mounting hole, the second end shaft is provided with a third mounting part, a fourth mounting part and a second fixing hole, the third mounting part is rotatably mounted in the second mounting hole, and the fourth mounting part and the second fixing hole are used for mounting and fixing the electric heating mechanism; and the ratchet wheel assembly comprises a ratchet wheel and an adjusting piece, wherein the ratchet wheel is arranged on the third mounting part, and the adjusting piece is mounted in the third mounting hole and used for being clamped with the tooth positions on the ratchet wheel.

According to a preferred embodiment, the second mounting hole is a stepped hole, the third mounting portion is mounted in a hole with a smaller hole diameter of the second mounting hole, the ratchet wheel is mounted in a hole with a larger hole diameter of the second mounting hole, and the hole with the larger hole diameter is larger than the outer diameter of the ratchet wheel; the adjusting piece comprises a spring, a bolt, a nut support and a bolt, wherein the spring is sleeved on the bolt, a third mounting hole is aligned with a hole with a larger aperture of the second mounting hole, the third mounting hole is a stepped hole, the hole with the larger aperture of the third mounting hole is formed by combining a cylindrical hole and a rectangular hole, the cylindrical parts of the spring and the bolt are mounted in the cylindrical hole, a square boss of the bolt is mounted in the rectangular hole, and the hole with the smaller aperture of the third mounting hole is used for mounting a bolt part of the bolt; the nut support is fixed on the second shaft seat, a fourth mounting hole is formed in the nut support, and the bolt is mounted in the fourth mounting hole, abutted against the end face of the bolt and clamped with the pin part of the bolt and the tooth position on the ratchet wheel.

According to a preferred embodiment, the heat dissipation plate component comprises a first heat dissipation plate and a second heat dissipation plate, the number of the second heat dissipation plates is multiple, the first heat dissipation plate and the two sides of the heating component are mutually attached, the second heat dissipation plate and the first heat dissipation plate are mutually attached, an embeddable structure is arranged on an attaching contact surface of the first heat dissipation plate and the second heat dissipation plate and an attaching contact surface of the two sides of the second heat dissipation plate, the first heat dissipation plate and the second heat dissipation plate are connected in an embedded mode through the embeddable structure, and every two adjacent second heat dissipation plates are connected in an embedded mode through the embeddable structure.

According to a preferred embodiment, the nestable structure comprises a boss and a first groove, the boss and the first groove are nested and connected with each other, wherein the boss or the first groove is arranged on a joint contact surface of the first radiating fin and the second radiating fin; the first groove is formed in the attaching contact surface of one side of the second radiating fin, the boss is formed in the attaching contact surface of the other side of the second radiating fin, two adjacent second radiating fins are connected in a mutually nested mode through the boss and the first groove, and the first radiating fin and the second radiating fin are connected in a mutually nested mode through the boss and the first groove.

According to a preferred embodiment, a heat conduction and insulation adhesive layer is arranged on the inner wall of the insulation aluminum groove, and the heat conduction and insulation adhesive layer on one side of the insulation aluminum groove is provided with a plurality of second grooves which are arranged at intervals and used for accommodating the insertion parts of the electric conduction insertion sheet and the insulation insertion sheet and enabling the insertion parts of the electric conduction insertion sheet and the insulation insertion sheet to be in contact with two adjacent electrode sheets.

According to a preferred embodiment, the end parts of two side surfaces of the insulating aluminum groove are provided with third grooves at intervals, the third grooves on the end parts of the two side surfaces are aligned with each other, the third grooves on the end part of one side of the insulating aluminum groove provided with the second grooves are positioned on two sides of the second grooves, and the third grooves are used for accommodating the end cover parts of the conductive inserting sheet and the insulating inserting sheet and enabling the end cover parts of the conductive inserting sheet and the insulating inserting sheet to be connected with the insulating aluminum groove in a sealing mode.

According to a preferred embodiment, the electrode sheets comprise a first electrode sheet, a second electrode sheet, a third electrode sheet and a fourth electrode sheet, wherein the first electrode sheet is attached to one side of the ceramic sheet, and the length of the first electrode sheet is equivalent to the sum of the lengths of the plurality of ceramic sheets; the second electrode slice, the third electrode slice with the fourth electrode slice interval laminating in the opposite side of ceramic wafer, and the second electrode slice with the fourth electrode slice is located the both ends of ceramic wafer, the third electrode slice is located the second electrode slice with between the fourth electrode slice, the second electrode slice with the length of fourth electrode slice all is greater than the length of third electrode slice, the length of third electrode slice is less than every the length of ceramic wafer just the third electrode slice is located in the middle of the ceramic wafer, electrically conductive inserted sheet or insulating inserted sheet is pegged graft in adjacent two the second electrode slice with between the third electrode slice, adjacent two between the third electrode slice, and adjacent two the third electrode slice with between the fourth electrode slice.

According to a preferred embodiment, the ceramic sheets include a first ceramic sheet and a second ceramic sheet, wherein the number of the first ceramic sheet is a plurality of and the first ceramic sheet is a power ceramic sheet, the number of the second ceramic sheet is two and the second ceramic sheet is a zero power ceramic sheet, and the second ceramic sheet is attached to both ends of the first electrode sheet, and a plurality of the first ceramic sheets are continuously attached to the first electrode sheet side by side and located between the two second ceramic sheets.

According to a preferred embodiment, the conductive tab and the insulating tab each have a tab portion and an end cap portion, wherein the end cap portions of the conductive tab and the insulating tab are both made of an insulating material; the inserting piece part of the conductive inserting piece is made of a conductive material; the plug piece part of the insulating plug piece is made of insulating materials.

According to a preferred embodiment, the conductive insert comprises a single pin conductive insert and a dual pin conductive insert, wherein the single pin conductive insert has an insert portion; the double-pin conductive insertion sheet is provided with two insertion sheet parts, and the two insertion sheet parts are mutually conducted.

According to a preferred embodiment, the insertion sheet part of the conductive insertion sheet and the insertion sheet part of the insulating insertion sheet are positioned on one side of the end cover part, and when the conductive insertion sheet and the insulating insertion sheet are inserted between two adjacent electrode sheets, the insertion sheet parts are positioned in the second groove of the insulating aluminum groove; the end cover part and one side that inserted sheet portion is connected are the fourth recess that high centre is low all around, and the width of fourth recess is not less than the width between the insulating aluminium groove both sides face, so that the fourth recess is used for holding the part between two adjacent third recesses on the insulating aluminium groove.

The heating device of the present invention includes a heating element, and the heating element is the PTC electric heater according to any one of the claims of the present invention.

The PTC electric heater and the heating device provided by the utility model at least have the following beneficial technical effects:

according to the PTC electric heater, the ratchet wheel assembly is arranged on the support mechanism, and the mounting angle of the electric heating mechanism can be adjusted through the ratchet wheel assembly, so that the head-on wind speed of the electric heating mechanism is adjusted, the heating capacity of the PTC electric heater can be adjusted, the error between the heating capacity of the PTC electric heater and the heating capacity required by a heating device is reduced, and the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device is improved. Compared with the adjusting mode of driving the PTC heating element to rotate through the motor in the prior art, the adjusting mode of adjusting the mounting angle of the electric heating mechanism through the ratchet wheel assembly has the advantages of unlimited mounting space and low cost.

The heating device provided by the utility model is provided with the heating body, the heating body is the PTC electric heater of any technical scheme, so that the heating device provided by the utility model can adjust the heating quantity of the PTC electric heater, reduce the error between the heating quantity of the PTC electric heater and the heating quantity required by the heating device, improve the matching success rate of the heating quantity of the PTC electric heater and the heating quantity required by the heating device, and has the advantages of no limitation on installation space and low cost.

The PTC electric heater and the heating device solve the technical problem that the matching success rate of the heating quantity of the PTC electric heater and the heating quantity required by the heating device in the prior art is low.

In addition, the preferable technical scheme of the utility model also has the following beneficial technical effects:

the radiating fin component of the preferred technical scheme of the utility model comprises a plurality of radiating fins which can be connected in a nested manner, so that the radiating area of the electric heating mechanism can be adjusted by increasing or reducing the number of the radiating fins by the electric heating mechanism, thereby adjusting the heating capacity of the PTC electric heater, further reducing the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device, and improving the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device.

The heating assembly in the preferred technical scheme of the utility model can adjust the heating power of the ceramic chip by increasing or decreasing the number of the conductive inserting pieces and the insulating inserting pieces, thereby adjusting the power of the PTC electric heater, so that the PTC electric heater in the preferred technical scheme of the utility model can be suitable for occasions with strict requirements on power by customers; on the other hand, the heating power of the ceramic chip is adjusted by increasing or reducing the number of the conductive insertion pieces and the insulating insertion pieces, so that the heating capacity of the PTC electric heater is adjusted while the power of the PTC electric heater is adjusted, the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device can be further reduced, and the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic overall view of a preferred embodiment of the PTC electric heater of the present invention;

fig. 2 is an exploded view of a preferred embodiment of the PTC electric heater of the present invention;

FIG. 3 is a schematic view of a preferred embodiment of the first axle seat of the present invention;

FIG. 4 is a schematic view of a preferred embodiment of the first end shaft of the present invention;

FIG. 5 is a schematic view of a preferred embodiment of a second hub of the present invention;

FIG. 6 is a cross-sectional view of a preferred embodiment of the second hub of the present invention;

FIG. 7 is a first schematic view of a preferred embodiment of a second end shaft of the present invention;

FIG. 8 is a second schematic view of a preferred embodiment of the second end shaft of the present invention;

FIG. 9 is a schematic view of a preferred embodiment of the bolt and nut bracket of the present invention engaged;

FIG. 10 is a schematic view of a preferred embodiment of the latch and spring combination of the present invention

FIG. 11 is a schematic view of a preferred embodiment of the ratchet assembly of the present invention;

FIG. 12 is a schematic view of the engagement of the second hub, second end shaft and ratchet assembly of the present invention;

fig. 13 is a first schematic view of a first heat sink and a second heat sink attached to each other in accordance with the present invention;

fig. 14 is a second schematic view of the first and second heat sinks of the present invention attached to each other;

FIG. 15 is a schematic view of a preferred embodiment of an insulated aluminum cell of the present invention;

FIG. 16 is an enlarged partial view of FIG. 15;

FIG. 17 is a schematic view of a preferred embodiment of a conductive insert of the present invention;

FIG. 18 is a schematic view of another preferred embodiment of the conductive insert of the present invention;

FIG. 19 is a schematic view of a preferred embodiment of an insulation tab of the present invention;

FIG. 20 is a schematic view of a preferred embodiment of a heating element of the present invention;

FIG. 21 is a schematic view of a preferred embodiment of the first electrode sheet of the present invention;

fig. 22 is a schematic view of a preferred embodiment of a second electrode sheet of the present invention;

FIG. 23 is a schematic view of a preferred embodiment of a third electrode sheet of the present invention;

fig. 24 is a schematic view of a preferred embodiment of a fourth electrode sheet of the present invention;

fig. 25 is a schematic arrangement of a first ceramic sheet and a second ceramic sheet according to the present invention;

FIG. 26 is a first schematic view of the tab assembly of the present invention mated with a heat generating component;

FIG. 27 is a second schematic view of the tab assembly of the present invention in cooperation with a heat generating component;

FIG. 28 is an overall schematic view of the electrothermal mechanism of the present invention.

In the figure: 11. a first shaft seat; 111. a first mounting hole; 12. a first end shaft; 121. a first mounting portion; 122. a second mounting portion; 123. a first fixing hole; 13. a second shaft base; 131. a second mounting hole; 132. a third mounting hole; 14. a second end shaft; 141. a third mounting portion; 142. a fourth mounting portion; 143. a second fixing hole; 151. a ratchet wheel; 152. a spring; 153. a bolt; 154. a nut bracket; 155. a bolt; 21. a first heat sink; 22. a second heat sink; 23. a boss; 24. a first groove; 31. an insulating aluminum tank; 311. a heat-conducting insulating glue layer; 311a, a second groove; 312. a third groove; 32. a conductive insert; 33. insulating insertion sheets; 34. a first electrode sheet; 35. a second electrode sheet; 36. a third electrode sheet; 37. a fourth electrode sheet; 38. a first ceramic sheet; 39. a second ceramic sheet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

The PTC electric heater and the heating device of the present invention will be described in detail with reference to the accompanying drawings 1 to 28 and examples 1 to 6 of the specification.

Example 1

This embodiment will explain the PTC electric heater of the present invention in detail.

The PTC electric heater of the present embodiment includes a support mechanism and an electric heating mechanism, as shown in fig. 1. Preferably, the electric heating mechanism comprises a heat sink assembly and a heat generating assembly, and the heat sink assembly is mounted on both sides of the heat generating assembly, as shown in fig. 2. The heating component is used for heating, and the heat sink component is used for dissipating heat generated by the heating component. Preferably, the support mechanisms are arranged at two ends of the electric heating mechanism and rotatably connected with the electric heating mechanism, and ratchet assemblies are arranged on the support mechanisms and used for adjusting the installation angle of the electric heating mechanism so as to adjust the head-on wind speed of the electric heating mechanism, as shown in fig. 1 or fig. 2. The structure for adjusting the installation angle of the electric heating mechanism is not limited to the ratchet assembly, and can be any structure with similar functions. The ratchet assembly of the present embodiment is an intermittent rotation mechanism, and a continuous rotation mechanism may also be used.

The PTC electric heater of this embodiment is provided with the ratchet subassembly on the support mechanism, and the installation angle of electric heating mechanism is adjusted to accessible ratchet subassembly to adjust electric heating mechanism's head-on wind speed, and then can adjust PTC electric heater's heating capacity, reduce the error between PTC electric heater's the heating capacity and the required heating capacity of heating device, improve PTC electric heater's the heating capacity and the required heating capacity's of heating device matching success rate. This embodiment is through the mode that ratchet subassembly adjusted electric heating mechanism installation angle, compares in prior art through the pivoted regulation mode of motor drive PTC heat-generating body, has the unrestricted and lower advantage of cost of installation space. The PTC electric heater of the embodiment solves the technical problem that the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device in the prior art is low.

According to a preferred embodiment, the heat sink assembly comprises a plurality of heat sinks, as shown in fig. 2. Preferably, the plurality of radiating fins can be connected in a nesting mode, and the electric heating mechanism can adjust the radiating area of the electric heating mechanism by increasing or reducing the number of the radiating fins. The plurality of radiating fins can be connected in a nested way or in a clamping way. Without being limited thereto, the plurality of heat sinks may also be in the form of the remaining detachable connections. The radiating fin component of the preferred technical scheme of the embodiment comprises a plurality of radiating fins which can be connected in a nested manner, so that the radiating area of the electric heating mechanism can be adjusted by increasing or reducing the number of the radiating fins, the heating quantity of the PTC electric heater is adjusted, the error between the heating quantity of the PTC electric heater and the heating quantity required by the heating device is further reduced, and the matching success rate of the heating quantity of the PTC electric heater and the heating quantity required by the heating device is improved.

According to a preferred embodiment, the heating assembly includes an insulated aluminum slot 31, a heating element and a tab element, as shown in FIG. 2. Preferably, the heating element is placed in the insulating aluminum tank 31, the heating element includes a plurality of electrode pads and a plurality of ceramic plates, and the plurality of ceramic plates are arranged side by side, and the plurality of electrode pads are attached to the ceramic plates and arranged at intervals, as shown in fig. 25 or fig. 26. Preferably, the tab element comprises a conductive tab 32 and an insulating tab 33, the conductive tab 32 and the insulating tab 33 are inserted between two adjacent electrode tabs and are in contact with the electrode tabs on two sides, and the heating component can adjust the heating power of the ceramic sheet by increasing or decreasing the number of the conductive tabs 32 and the insulating tabs 33, as shown in fig. 26 to 28. Specifically, the number of the heating ceramic plates, that is, the number of the power ceramic plates, can be adjusted by increasing or decreasing the numbers of the conductive insert 32 and the insulating insert 33, so as to adjust the heating power of the ceramic plates. The heating assembly in the preferred technical scheme of the embodiment can adjust the heating power of the ceramic wafer by increasing or decreasing the number of the conductive inserting pieces 32 and the insulating inserting pieces 33, so as to adjust the power of the PTC electric heater, and the PTC electric heater in the preferred technical scheme of the embodiment can be suitable for occasions with strict requirements on power by customers; on the other hand, the heating power of the ceramic plate is adjusted by increasing or decreasing the number of the conductive insertion pieces 32 and the insulating insertion pieces 33, so that the heating quantity of the PTC electric heater is adjusted while the power of the PTC electric heater is adjusted, the error between the heating quantity of the PTC electric heater and the heating quantity required by the heating device can be further reduced, and the matching success rate of the heating quantity of the PTC electric heater and the heating quantity required by the heating device is improved.

The PTC electric heater of the preferred technical scheme of this embodiment, compact structure, simple to operate, easy operation, adjustment heating volume and power that can be convenient, through the coordination of multiple mode, improved PTC electric heater greatly and heating device's matching success rate, very big reduction the waste of time and resource.

Example 2

The present embodiment will explain the specific structure of the seat mechanism in detail on the basis of embodiment 1.

According to a preferred embodiment, the support mechanism comprises a first support mechanism and a second support mechanism, the first support mechanism and the second support mechanism are respectively and rotatably connected with two ends of the electric heating mechanism, and the ratchet wheel assembly is arranged on the second support mechanism. Without being limited thereto, the ratchet assembly may also be disposed on the first mount mechanism; the ratchet assembly may also be disposed on both the first mount mechanism and the second mount mechanism.

According to a preferred embodiment, the first bearing mechanism comprises a first bearing housing 11 and a first end shaft 12. Preferably, the first shaft seat 11 is provided with a first mounting hole 111, and the first end shaft 12 has a first mounting portion 121, a second mounting portion 122 and a first fixing hole 123, wherein the first mounting portion 121 is rotatably mounted in the first mounting hole 111, and the second mounting portion 122 and the first fixing hole 123 are used for mounting and fixing the electric heating mechanism, as shown in fig. 3 and 4. More preferably, the first mounting portion 121 is a cylindrical shaft, and the first mounting hole 111 is a cylindrical hole that fits the cylindrical shaft, and the cylindrical shaft is freely rotatable within the cylindrical hole. More preferably, the fixing leg portion at the bottom of the first shaft seat 11 is provided with two long waist holes, and the long waist holes can be used for fine position adjustment when the whole PTC electric heater is installed, as shown in fig. 3. More preferably, one end of the cylindrical shaft of the first end shaft 12, which is far away from the first shaft seat 11, is a square boss, and a square hole is formed in the square boss and used for installing the end part of the electric heating mechanism; the side of the square boss is provided with a first fixing hole 123, and the electric heating mechanism and the first end shaft 12 can be fixedly connected through a screw installed in the first fixing hole 123, as shown in fig. 4.

According to a preferred embodiment, the second bearing means comprise a second bearing 13 and a second end shaft 14. Preferably, the second shaft seat 13 is provided with a second mounting hole 131 and a third mounting hole 132, and the second end shaft 14 is provided with a third mounting portion 141, a fourth mounting portion 142 and a second fixing hole 143, wherein the third mounting portion 141 is rotatably mounted in the second mounting hole 131, and the fourth mounting portion 142 and the second fixing hole 143 are used for mounting and fixing the electric heating mechanism, as shown in fig. 5 to 8. Preferably, the ratchet assembly comprises a ratchet wheel 151 and an adjusting member, wherein the ratchet wheel 151 is disposed on the third mounting portion 141, and the adjusting member is mounted in the third mounting hole 132 and is used for being engaged with a tooth position on the ratchet wheel 151, as shown in fig. 5 to 12. More preferably, the third mounting portion 141 is a cylindrical shaft, and the third mounting portion 141 is mounted in the second mounting hole 131 to be rotatable in the second mounting hole 131. More preferably, the fixing leg part at the bottom of the second shaft seat 13 is provided with two round holes, and the round holes can be used for installing the whole PTC electric heater, as shown in FIG. 5. More preferably, one end of the cylindrical shaft of the second end shaft 14, which is far away from the second shaft seat 13, is a square boss, and a square hole is formed in the square boss and used for installing the end part of the electric heating mechanism; the side of the square boss is provided with a second fixing hole 143, and the electric heating mechanism and the second end shaft 14 can be fixedly connected through a screw installed in the second fixing hole 143, as shown in fig. 7.

According to a preferred embodiment, the second mounting hole 131 is a stepped hole, the third mounting portion 141 is mounted in a hole having a smaller hole diameter of the second mounting hole 131, the ratchet wheel 151 is mounted in a hole having a larger hole diameter of the second mounting hole 131, and the hole having the larger hole diameter is larger than the outer diameter of the ratchet wheel 151, so that the ratchet wheel 151 can be rotated, as shown in fig. 6. The adjusting member comprises a spring 152, a bolt 153, a nut bracket 154 and a bolt 155, wherein the spring 152 is sleeved on the bolt 153, as shown in fig. 9-12. The third mounting hole 132 is located above the hole with the larger aperture of the second mounting hole 131, the third mounting hole 132 is a stepped hole, the hole with the larger aperture of the third mounting hole 132 is formed by combining a cylindrical hole and a rectangular hole, the cylindrical portion of the spring 152 and the plug pin 153 is mounted in the cylindrical hole, the square boss of the plug pin 153 is mounted in the rectangular hole, and the hole with the smaller aperture of the third mounting hole 132 is used for mounting the plug pin portion of the plug pin 153, as shown in fig. 6 or 12. The square boss of the pin 153 is fitted in the rectangular hole to restrict the rotation of the pin 153. The nut bracket 154 is fixed to the second bearing block 13, and the nut bracket 154 is provided with a fourth mounting hole, and the bolt 155 is mounted in the fourth mounting hole and abuts against an end surface of the bolt 153 to cause a bolt portion of the bolt 153 to be engaged with a tooth position on the ratchet 151, as shown in fig. 11 or 12. Specifically, two threaded holes are formed in the second bearing 13 for fixing the nut bracket 154, and the bolt 155 is installed in the fourth installation hole of the nut bracket 154, so that the bolt 153 can be pressed by tightening the bolt 155. In the preferred embodiment of the present invention, the step hole means that at least two holes with different diameters are formed in the second mounting hole 131 and the third mounting hole 132, and the two holes are step-shaped.

As shown in fig. 11 or 12, the ratchet assembly of the preferred embodiment of the present invention adjusts the installation angle of the electric heating mechanism by the following method: loosening the bolt 155 on the nut bracket 154 to loosen the bolt 155 and raise the bolt 155 to a certain height, at this time, the spring 152 is reset, the bolt 153 is lifted to a certain height under the elastic force of the spring 152, so that the bolt 153 is separated from the tooth groove of the ratchet wheel 151 in the second end shaft 14 to a certain height, and thus, the bolt 153 does not limit the rotation of the ratchet wheel 151 any more, and the electric heating mechanism can be rotated to a certain angle; after the electric heating mechanism is adjusted to a proper angle, the bolt 155 on the nut bracket 154 is tightened to prop the bolt 153 downwards, the spring 152 is compressed, and at this time, the bolt 153 moves downwards and is inserted into the tooth groove of the ratchet wheel 151, so that the rotation of the ratchet wheel 151 is limited, and the electric heating mechanism is fixed at a proper angle.

Example 3

On the basis of embodiment 1, this embodiment describes in detail the specific structure of the fin assembly.

According to a preferred embodiment, the heat sink assembly includes a plurality of first heat sinks 21 and a plurality of second heat sinks 22, the first heat sinks 21 are attached to both sides of the heat generating assembly, and the second heat sinks 22 are attached to the first heat sinks 21, as shown in fig. 13 or 14. Preferably, the fitting contact surface of the first heat sink 21 and the second heat sink 22 and the fitting contact surface of the two sides of the second heat sink 22 are provided with a nestable structure, so that the first heat sink 21 and the second heat sink 22 are nested and connected with each other through the nestable structure, and two adjacent second heat sinks 22 are nested and connected with each other through the nestable structure. More preferably, the first fin 21 and the second fin 22 are corrugated fins. The first fin 21 may be said to be a base fin, and the second fin 22 may be said to be an extended fin. The heat radiating area of the electric heating mechanism can be adjusted by increasing or decreasing the number of the second heat radiating fins 22, so that the heating capacity of the PTC electric heater can be adjusted. In the process of mutually nesting and installing the second heat sink 22 and the first heat sink 21 and in the process of mutually nesting and installing the second heat sink 22 and the second heat sink 22, a high-temperature-resistant heat-conducting insulating adhesive layer needs to be added on the contact surface of the two heat sinks, so as to ensure that the two adjacent heat sinks are firmly and reliably installed and have good heat conduction.

According to a preferred embodiment, the nestable structure comprises a boss 23 and a first recess 24, the boss 23 and the first recess 24 being nested within one another as shown in fig. 14. Preferably, a boss 23 or a first groove 24 is arranged on the joint contact surface of the first radiating fin 21 and the second radiating fin 22; a first groove 24 is formed on one side of the contact surface of the second heat dissipation fin 22, a boss 23 is formed on the other side of the contact surface of the second heat dissipation fin 22, two adjacent second heat dissipation fins 22 are connected with each other in a nested manner through the boss 23 and the first groove 24, and the first heat dissipation fin 21 and the second heat dissipation fin 22 are connected with each other in a nested manner through the boss 23 and the first groove 24, as shown in fig. 14. More preferably, the boss 23 and the first groove 24 are disposed at upper and lower ends of the contact surface of the first fin 21 and/or the second fin 22.

Specifically, bosses 23 are provided at upper and lower ends of the contact surface of the first heat sink 21 and the second heat sink 22, first grooves 24 are provided at upper and lower ends of the contact surface of one side of the second heat sink 22, and bosses 23 are provided at upper and lower ends of the contact surface of the other side of the second heat sink 22, as shown in fig. 14. The surface of the first heat sink 21 with the boss 23 and the surface of the second heat sink 22 with the first groove 24 are in contact with each other, and the boss 23 is clamped in the first groove 24, so that the nested connection of the first heat sink 21 and the second heat sink 22 is realized, as shown in fig. 14. Similarly, the surface of the second heat sink 22 having the boss 23 and the surface of the other second heat sink 22 having the first groove 24 are in contact with each other, and the boss 23 is engaged in the first groove 24, thereby achieving the nested connection of the two adjacent second heat sinks 22.

Without being limited thereto, the nestable structure of the preferred embodiment of the present invention may also be the rest of the clamping structure in the prior art. Without being limited thereto, the first heat sink 21 and the second heat sink 22, and the two adjacent second heat sinks 22 of the preferred embodiment may also be detachably connected by other detachable structures in the prior art.

According to a preferred embodiment, the heat dissipation area of the second heat dissipation fins 22 can be made to different sizes based on different heating requirements, but it is necessary to satisfy the matching of the size of the nestable structure of all the second heat dissipation fins 22, so as to ensure that all the second heat dissipation fins 22 can be smoothly fitted with the first heat dissipation fins 21, or the second heat dissipation fins 22 can be smoothly fitted with the second heat dissipation fins 22.

According to a preferred embodiment, both ends of the first fin 21 are designed in a stepped boss structure such that portions where both ends of the first fin are mounted to the first and second shafts 12 and 14 are lower than the height of the first fin 21, so that the size of the second mounting portion 122 on the first shaft 12 and the fourth mounting portion 142 on the second shaft 14 can be reduced, as shown in fig. 13.

Example 4

In this embodiment, a specific structure of the heat generating component will be described in detail based on embodiment 1.

According to a preferred embodiment, the inner wall of the aluminum insulation groove 31 is provided with a thermally conductive and insulating glue layer 311, as shown in fig. 15 or fig. 16. Preferably, the heat conductive insulating glue layer 311 on one side of the insulating aluminum groove 31 has a plurality of second grooves 311a arranged at intervals, and the second grooves 311a are used for accommodating the insertion parts of the conductive insertion sheet 32 and the insulating insertion sheet 33 and enabling the insertion parts of the conductive insertion sheet 32 and the insulating insertion sheet 33 and two adjacent electrode sheets to contact with each other, as shown in fig. 16. More preferably, the heat conductive insulating glue layer 311 is made of high temperature resistant heat conductive insulating glue. Specifically, the heat conductive and insulating adhesive layer 311 on the left side and the bottom of the inner wall of the aluminum insulating groove 31 is of uniform thickness, the heat conductive and insulating adhesive layer 311 on the right side of the inner wall of the aluminum insulating groove 31 has a plurality of second grooves 311a arranged at intervals, the thickness of the second grooves 311a is consistent with the thickness of the heat conductive and insulating adhesive layer 311 on the left side and the bottom of the inner wall of the aluminum insulating groove 31, and the thickness of the second grooves 311a which are not arranged is greater than the thickness of the heat conductive and insulating adhesive layer 311 on the left side and the bottom of the inner wall of the aluminum insulating groove 31, as shown in fig. 16.

Preferably, after the heating element is placed in the insulating aluminum groove 31, the upper part of the heating element and two ends inside the insulating aluminum groove 31 are both sealed by using high-temperature-resistant heat-conducting insulating glue with a certain thickness, so that the heating element can be completely isolated from the aluminum surface of the insulating aluminum groove 31 by the high-temperature-resistant heat-conducting insulating glue; at the same time, it is ensured that the second recess 311a is not sealed by the heat-resistant heat-conductive insulating glue, so as to place the chip component in the second recess 311 a.

According to a preferred embodiment, the end portions of the two side surfaces of the aluminum-insulated tank 31 are provided with third grooves 312 at intervals, as shown in fig. 16. Preferably, the third grooves 312 on the two side end portions are aligned with each other, and the third grooves 312 on the side end portion of the insulating aluminum slot 31 where the second groove 311a is provided are located on both sides of the second groove 311a, the third grooves 312 are used for accommodating the end cap portions of the conductive insert piece 32 and the insulating insert piece 33 and sealing and connecting the end cap portions of the conductive insert piece 32 and the insulating insert piece 33 with the insulating aluminum slot 31, as shown in fig. 16. After the inserting piece element is inserted into the second groove 311a, the gap between the second groove 311a and the heating element is filled up by the inserting piece part of the inserting piece element, so that the inserting piece part of the inserting piece element is ensured to be in good contact with the heating element, and the end cover part of the inserting piece element can be just clamped with the third groove 312, so that the second groove 311a in the insulating aluminum groove 31 is ensured to be covered, and good sealing is realized.

According to a preferred embodiment, the electrode sheets include a first electrode sheet 34, a second electrode sheet 35, a third electrode sheet 36 and a fourth electrode sheet 37, as shown in fig. 21-24. Preferably, the first electrode sheet 34 is attached to one side of the ceramic sheet, and the length of the first electrode sheet 34 corresponds to the sum of the lengths of the plurality of ceramic sheets, as shown in fig. 21. The first electrode sheet 34 may also be called a long electrode sheet, and a plurality of ceramic sheets are continuously arranged and stuck on the first electrode sheet 34 as a heating element of the heating element. Preferably, the second electrode sheet 35, the third electrode sheet 36 and the fourth electrode sheet 37 are attached to the other side of the ceramic sheet at intervals, the second electrode sheet 35 and the fourth electrode sheet 37 are located at both ends of the ceramic sheet, and the third electrode sheet 36 is located between the second electrode sheet 35 and the fourth electrode sheet 37, as shown in fig. 26. The second, third and fourth electrode sheets 35, 36, 37 are relatively short electrode sheets, and the second, third and fourth electrode sheets 35, 36, 37 are attached to the other side of the ceramic sheet at intervals to form a sectional type electrode sheet, as shown in fig. 26. More preferably, the lengths of the second electrode plate 35 and the fourth electrode plate 37 are both greater than the length of the third electrode plate 36, the length of the third electrode plate 36 is less than the length of each ceramic plate, the third electrode plate 36 is located between the ceramic plates, and the conductive insertion tab 32 or the insulating insertion tab 33 is inserted between two adjacent second electrode plates 35 and the third electrode plates 36, between two adjacent third electrode plates 36, and between two adjacent third electrode plates 36 and the fourth electrode plate 37, as shown in fig. 26 to 28. Specifically, the lengths of the second electrode sheet 35 and the fourth electrode sheet 37 are both greater than the length of the third electrode sheet 36, and the second electrode sheet 35 and the fourth electrode sheet 37 are attached to both ends of the ceramic sheet, as shown in fig. 26. The length of the third electrode sheet 36 is less than the length of each ceramic sheet and the third electrode sheet 36 is located in the middle of the ceramic sheets as shown in fig. 26, for example: the length of the third electrode sheet 36 is 5mm shorter than that of each ceramic sheet, and when the third electrode sheet 36 is attached to the middle of each ceramic sheet, both ends of the third electrode sheet 36 are 2.5mm shorter than both ends of the ceramic sheet, so that two adjacent third electrode sheets 36 are contacted by inserting the conductive insertion sheet 32, or two adjacent third electrode sheets 36 are isolated by inserting the insulating insertion sheet 33.

Preferably, plug pieces are welded to the ends of the first electrode plate 34 and the second electrode plate 35 for plugging terminals of electric wires, as shown in fig. 21 or 22.

According to a preferred embodiment the ceramic sheets comprise a first ceramic sheet 38 and a second ceramic sheet 39, as shown in fig. 25. Preferably, the number of the first ceramic plates 38 is multiple and the first ceramic plates 38 are power ceramic plates, and the number of the second ceramic plates 39 is two and the second ceramic plates 39 are zero power ceramic plates. More preferably, the second ceramic sheet 39 is attached to both ends of the first electrode sheet 34; a plurality of first ceramic sheets 38 are continuously attached to the first electrode sheet 34 side by side and between two second ceramic sheets 39 as heat generators, as shown in fig. 25. In the preferred technical scheme of the embodiment, the power ceramic wafer refers to a ceramic wafer which can generate heat, and the zero-power ceramic wafer refers to a ceramic wafer which does not generate heat. In the preferred technical scheme of the embodiment, the zero-power ceramic plates are attached to two ends of the first electrode plate 34, so that when the PTC heater works by electric heating, two ends of the electric heating mechanism do not generate heat.

According to a preferred embodiment, the conductive tab 32 and the insulating tab 33 each have a tab portion and an end cap portion, as shown in fig. 17-19. Preferably, the end cover parts of the conductive insertion sheet 32 and the insulating insertion sheet 33 are made of insulating materials; the tab portion of the conductive tab 32 is made of a conductive material; the tab portion of the insulating tab 33 is made of an insulating material. Specifically, the conductive insert sheet 32 and the insulating insert sheet 33 have the same appearance structure, and are different in that the insert portion of the conductive insert sheet 32 is made of a conductive material, and the insert portion of the insulating insert sheet 33 is made of an insulating material. When the conductive insert 32 is inserted into the second groove 311a of the insulating aluminum groove 31, the conductive insert 32 can connect and conduct the electrode pads located at both sides thereof; when the insulating insertion sheet 33 is inserted into the second groove 311a of the insulating aluminum groove 31, the two electrode sheets on both sides of the insulating insertion sheet 33 are still in a state of not contacting each other.

According to a preferred embodiment, the conductive tabs 32 include single pin conductive tabs and double pin conductive tabs. Preferably, the single pin conductive insert has an insert portion, as shown in fig. 17; the two-pin conductive insert has two insert portions, and the two insert portions are in conduction with each other, as shown in fig. 18. When the single-pin conductive insert is inserted into the second groove 311a of the aluminum-insulating groove 31, the single-pin conductive insert can connect and conduct the electrode pads located at both sides thereof. Two inserting pieces of the double-pin conductive inserting piece are mutually conducted, when the double-pin conductive inserting piece is inserted into the second groove 311a of the insulating aluminum groove 31, the double-pin conductive inserting piece can be connected and conducted with the electrode pieces positioned at two sides of the double-pin conductive inserting piece, and the electrode pieces right below the double-pin conductive inserting piece are isolated and disconnected, so that the double-pin conductive inserting piece is not connected and conducted with two adjacent electrode pieces at the left and right.

According to a preferred embodiment, the insertion sheet parts of the conductive insertion sheet 32 and the insulating insertion sheet 33 are positioned at one side of the end cover part, and when the conductive insertion sheet 32 and the insulating insertion sheet 33 are inserted between two adjacent electrode sheets, the insertion sheet parts are positioned in the second groove 311a of the insulating aluminum groove 31; the side of the end cover part connected with the insert part is a fourth groove with high periphery and low middle part, and the width of the fourth groove is not less than the width between two side surfaces of the aluminum insulation groove 31, so that the fourth groove is used for accommodating the part between two adjacent third grooves 312 on the aluminum insulation groove 31 as shown in fig. 16-19. The side that the preferred technical scheme of this embodiment end cap portion is connected with inserted sheet portion is the fourth recess that height in the middle of all around is low to the width of fourth recess is not less than the width between the both sides face of insulating aluminium groove 31, when the inserted sheet portion of electrically conductive inserted sheet 32 and insulating inserted sheet 33 inserts in the second recess 311a of insulating aluminium groove 31, the fourth recess of end cap just in time can with insulating aluminium groove 31 on the part joint between two adjacent third recesses 312, guaranteed that insulating aluminium groove 31's second recess 311a is covered, thereby realize well sealed.

According to a preferred embodiment, more first ceramic sheets 38 are attached to the first electrode sheet 34 to allow the power of the PTC electric heater to have a sufficient margin, and the amount of heat generated by the first ceramic sheets 38 is adjusted by inserting different numbers of single-pin conductive inserts, double-pin conductive inserts, and insulating inserts 33 into the second grooves 311a of the aluminum-insulating groove 31, thereby changing the heating amount and power of the PTC electric heater.

Example 5

The present embodiment will explain the heating apparatus of the present invention in detail.

The heating device of the present embodiment has a heating element, and the heating element is the PTC electric heater according to any one of embodiments 1 to 4. Preferably, the heating device is an air conditioner or a fan heater. It can be known that the heating device includes other structures in the prior art such as the shell besides the heating element, and the description is omitted here.

The heating device of this embodiment has the PTC electric heater of any one of technical scheme in embodiments 1 ~ 4 for the heating device of this embodiment can adjust the heating capacity of PTC electric heater, reduces the error between the heating capacity of PTC electric heater and the required heating capacity of heating device, improves the matching success rate of the heating capacity of PTC electric heater and the required heating capacity of heating device, and still has the advantage that installation space is unrestricted and the cost is lower. The heating device of the embodiment solves the technical problem that the matching success rate of the heating quantity of the PTC electric heater and the heating quantity required by the heating device in the prior art is low.

Example 6

This example describes the method for adjusting the heating capacity of the PTC electric heater according to the present invention in detail.

In the method for adjusting the heating capacity of the PTC electric heater according to the present embodiment, the PTC electric heater is the PTC electric heater according to any one of embodiments 1 to 4. Preferably, the method for adjusting the heating capacity of the PTC electric heater comprises the following steps: the mounting angle of the electric heating mechanism is adjusted through the ratchet wheel component on the support mechanism to adjust the head-on wind speed of the electric heating mechanism.

In the method for adjusting the heating capacity of the PTC electric heater according to any one of embodiments 1 to 4, the ratchet assembly on the support mechanism is used to adjust the installation angle of the electric heating mechanism to adjust the windward speed of the electric heating mechanism, so that the heating capacity of the PTC electric heater can be adjusted, the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device is reduced, the success rate of matching the heating capacity of the PTC electric heater and the heating capacity required by the heating device is improved, and the method has the advantages of unlimited installation space and low cost. The method for adjusting the heating capacity of the PTC electric heater in the embodiment solves the technical problem that the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device in the prior art is low.

According to a preferred embodiment, the method for adjusting the heating capacity of the PTC electric heater further comprises the following steps: the heat dissipation area of the electrothermal mechanism is adjusted by increasing or decreasing the number of heat sinks in the heat sink assembly. According to the adjusting method of the preferred technical scheme of the embodiment, the heat radiating area of the electric heating mechanism is adjusted by increasing or reducing the number of the heat radiating fins in the heat radiating fin assembly, so that the heating capacity of the PTC electric heater is adjusted, the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device is further reduced, and the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device is improved.

According to a preferred embodiment, the method for adjusting the heating capacity of the PTC electric heater further comprises the following steps: the power of the ceramic sheet heating is adjusted by increasing or decreasing the number of conductive inserts 32 and insulating inserts 33. The adjusting method of the preferred technical scheme of the embodiment adjusts the heating power of the ceramic wafer by increasing or decreasing the number of the conductive inserting pieces 32 and the insulating inserting pieces 33, so as to adjust the power of the PTC electric heater, and the PTC electric heater of the preferred technical scheme of the embodiment can be suitable for occasions with strict requirements of customers on power; on the other hand, the heating power of the ceramic plate is adjusted by increasing or decreasing the number of the conductive insertion pieces 32 and the insulating insertion pieces 33, so that the heating quantity of the PTC electric heater is adjusted while the power of the PTC electric heater is adjusted, the error between the heating quantity of the PTC electric heater and the heating quantity required by the heating device can be further reduced, and the matching success rate of the heating quantity of the PTC electric heater and the heating quantity required by the heating device is improved.

When the heating amount of the PTC heater needs to be adjusted, one or more of the three adjustment methods may be arbitrarily selected for adjustment.

According to a preferred embodiment, the PTC electric heater is developed to increase the heating capacity of the PTC electric heater when the heating capacity is lower than the heating capacity required by the heating device by: the number of the second radiating fins 22 is increased on the side surface of the first radiating fin 21, so that the radiating area of the electric heating mechanism is increased, and the heating quantity of the PTC electric heater is adjusted. If the heating capacity of the PTC electric heater is slightly higher or lower than the heating capacity required by the heating device after increasing the number of the second heat dissipation fins 22, the installation angle of the electric heating mechanism can be adjusted by the ratchet wheel assembly on the support mechanism, so that the head-on air speed of the electric heating mechanism is reduced or increased, and the heating capacity of the PTC electric heater is matched with the heating capacity required by the heating device. Or the mounting angle of the electric heating mechanism is adjusted only through the ratchet wheel component on the support mechanism, so that the head-on wind speed of the electric heating mechanism is increased, and the heating capacity of the PTC electric heater is matched with the heating capacity required by the heating device.

On the contrary, when the heating capacity of the developed PTC electric heater is higher than the heating capacity required by the heating device, the heating capacity of the PTC electric heater is reduced by: the installation angle of the electric heating mechanism is adjusted through the ratchet wheel component on the support mechanism, so that the head-on wind speed of the electric heating mechanism is reduced, and the heating capacity of the PTC electric heater is matched with the heating capacity required by the heating device. Or the number of the second radiating fins 22 is reduced, so that the radiating area of the electric heating mechanism is reduced, and the heating quantity of the PTC electric heater is reduced. If the heating capacity of the PTC electric heater is slightly higher or lower than the heating capacity required by the heating device after the number of the second heat dissipation fins 22 is reduced, the mounting angle of the electric heating mechanism can be adjusted by the ratchet wheel assembly on the support mechanism, so that the head-on air speed of the electric heating mechanism is reduced or increased, and the heating capacity of the PTC electric heater is matched with the heating capacity required by the heating device.

According to a preferred embodiment, the PTC electric heater is developed to increase its heating capacity or power when the heating capacity or power is lower than the heating capacity or power required by the heating device by: the insulating insertion sheet 33 inserted into the second groove 311a of the insulating aluminum groove 31 is replaced by a single-pin conductive insertion sheet, so that the third electrode sheets 36 positioned at both sides of the single-pin conductive insertion sheet are connected, and the first ceramic sheet 38 in contact with the third electrode sheets 36 can do work and generate heat, thereby increasing the quantity of heat generated by the first ceramic sheet 38 and further improving the heating capacity and power of the PTC electric heater.

According to a preferred embodiment, when the heating capacity or power of the PTC electric heater is developed to be lower than the heating capacity or power required by the heating device, the heating capacity or power of the PTC electric heater can also be increased by: the double-pin conductive insert inserted into the second groove 311a of the insulating aluminum tank 31 is replaced with two single-pin conductive inserts, so that the third electrode sheet 36 positioned right below the double-pin conductive insert is connected with the third electrode sheets 36 at both sides, and the first ceramic sheet 38 in contact with the third electrode sheet 36 is heated by applying work, thereby improving the heating capacity and power of the PTC electric heater.

If the heating quantity of the PTC electric heater is slightly higher or lower than the heating quantity required by the heating device by increasing the heating quantity of the first ceramic sheet 38, the mounting angle of the electric heating mechanism can be adjusted by the ratchet wheel component on the support mechanism, so that the head-on air speed of the electric heating mechanism is reduced or increased, and the heating quantity of the PTC electric heater is matched with the heating quantity required by the heating device.

On the contrary, when the heating capacity or power of the developed PTC electric heater is higher than the heating capacity or power required by the heating device, the heating capacity or power of the PTC electric heater is reduced by: the single-pin conductive insert inserted into the second groove 311a of the insulating aluminum groove 31 is replaced with the insulating insert 33, so that the third electrode plates 36 positioned at two sides of the insulating insert 33 are disconnected, and the first ceramic sheet 38 in contact with the third electrode plates 36 does not work, thereby reducing the heating quantity of the first ceramic sheet 38 and further reducing the heating quantity and power of the PTC electric heater. Preferably, the single-pin conductive insert in the second recess 311a at the end of the aluminum insulation groove 31 is replaced by the insulating insert 33, so that the third electrode sheet 36 at the end is disconnected from the previous third electrode sheet 36, and thus the first ceramic sheet 38 at the end does not work, and the heating capacity and power of the PTC electric heater can be reduced.

Conversely, when the heating capacity or power of the developed PTC electric heater is higher than the heating capacity or power required by the heating device, the heating capacity or power of the PTC electric heater can also be reduced by: two continuous single-pin conductive inserts inserted into the second grooves 311a of the insulating aluminum tank 31 are replaced with double-pin conductive inserts, so that the third electrode sheet 36 positioned right below the double-pin conductive inserts can be disconnected from the third electrode sheets 36 on both sides, and the first ceramic sheet 38 in contact with the third electrode sheet 36 does not work, thereby reducing the heating capacity and power of the PTC electric heater.

If the heating quantity of the PTC electric heater is slightly higher or lower than the heating quantity required by the heating device after reducing the heating quantity of the first ceramic sheet 38, the mounting angle of the electric heating mechanism can be adjusted by the ratchet wheel component on the support mechanism, so that the head-on air speed of the electric heating mechanism is reduced or increased, and the heating quantity of the PTC electric heater is matched with the heating quantity required by the heating device.

According to the method for adjusting the heating capacity of the PTC electric heater, the mounting angle of the electric heating mechanism is adjusted through the ratchet wheel assembly on the support mechanism, so that the head-on wind speed of the electric heating mechanism can be adjusted, and the heating capacity of the PTC electric heater is adjusted; the heating capacity of the PTC electric heater can be adjusted by increasing or decreasing the number of the second cooling fins 22 to adjust the heat dissipation area of the electric heating mechanism; the heating capacity and power of the PTC electric heater can also be adjusted by changing the number of the single-pin conductive inserts, the double-pin conductive inserts, and the insulating inserts 33 inserted into the second recess 311a of the aluminum-insulated slot 31. Compared with a single adjusting mode, the adjusting method for the heating capacity of the PTC electric heater has the advantages that the adjusting method for the heating capacity of the PTC electric heater has the synergistic effect of multiple modes, various adjusting modes are mutually complementary, the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device can be reduced to the minimum, and the practicability is greatly improved.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (17)

1. A PTC electric heater is characterized by comprising a support mechanism and an electric heating mechanism, wherein the electric heating mechanism comprises a heat dissipation sheet assembly and a heating assembly, and the heat dissipation sheet assembly is arranged on two sides of the heating assembly; the support mechanism is arranged at two ends of the electric heating mechanism and is rotatably connected with the electric heating mechanism, and a ratchet wheel assembly is arranged on the support mechanism and is used for adjusting the installation angle of the electric heating mechanism so as to adjust the head-on wind speed of the electric heating mechanism.

2. The PTC electric heater according to claim 1, wherein the heat sink assembly comprises a plurality of heat sinks, a plurality of the heat sinks being nestably connectable and enabling the electric heating mechanism to adjust the heat dissipation area of the electric heating mechanism by increasing or decreasing the number of the heat sinks.

3. The PTC electric heater according to claim 1 or 2, wherein the heating assembly comprises an insulating aluminum tank (31), a heating element and an insert element, the heating element is placed in the insulating aluminum tank (31), the heating element comprises a plurality of electrode sheets and a plurality of ceramic sheets, and the plurality of ceramic sheets are arranged side by side, and the plurality of electrode sheets are attached to the ceramic sheets and arranged at intervals;

the insert element comprises a conductive insert (32) and an insulating insert (33), the conductive insert (32) and the insulating insert (33) are inserted between two adjacent electrode plates and are in contact with the electrode plates at two sides, and the heating component can adjust the heating power of the ceramic plate by increasing or decreasing the number of the conductive inserts (32) and the insulating inserts (33).

4. The PTC electric heater according to claim 1, wherein the support mechanism includes a first support mechanism and a second support mechanism, the first support mechanism and the second support mechanism are rotatably connected to both ends of the electric heating mechanism, respectively, and the ratchet assembly is provided on the second support mechanism.

5. The PTC electric heater according to claim 4, wherein the first supporting mechanism comprises a first shaft seat (11) and a first end shaft (12), the first shaft seat (11) is provided with a first mounting hole (111), the first end shaft (12) has a first mounting part (121), a second mounting part (122) and a first fixing hole (123), wherein the first mounting part (121) is rotatably mounted in the first mounting hole (111), and the second mounting part (122) and the first fixing hole (123) are used for mounting and fixing the electric heating mechanism.

6. The PTC electric heater according to claim 4, wherein the second support means comprises a second shaft holder (13) and a second end shaft (14), the second shaft holder (13) is provided with a second mounting hole (131) and a third mounting hole (132), the second end shaft (14) is provided with a third mounting portion (141), a fourth mounting portion (142) and a second fixing hole (143), wherein the third mounting portion (141) is rotatably mounted in the second mounting hole (131), and the fourth mounting portion (142) and the second fixing hole (143) are used for mounting and fixing the electric heating means; and is

Ratchet subassembly includes ratchet (151) and regulating part, wherein, ratchet (151) set up in on third installation department (141), the regulating part install in third mounting hole (132) and be used for with the tooth position joint on the ratchet (151).

7. The PTC electric heater according to claim 6, wherein the second mounting hole (131) is a stepped hole, the third mounting part (141) is mounted in a hole of which the diameter of the second mounting hole (131) is smaller, the ratchet (151) is mounted in a hole of which the diameter of the second mounting hole (131) is larger, and the diameter of the hole of which the diameter is larger than the outer diameter of the ratchet (151);

the adjusting piece comprises a spring (152), a bolt (153), a nut bracket (154) and a bolt (155), wherein the spring (152) is sleeved on the bolt (153),

the third mounting hole (132) is aligned with the second mounting hole (131) in a larger aperture, the third mounting hole (132) is a stepped hole, the hole with the larger aperture of the third mounting hole (132) is formed by combining a cylindrical hole and a rectangular hole, the cylindrical parts of the spring (152) and the bolt (153) are mounted in the cylindrical hole, the square boss of the bolt (153) is mounted in the rectangular hole, and the hole with the smaller aperture of the third mounting hole (132) is used for mounting the bolt part of the bolt (153);

the nut support (154) is fixed on the second shaft seat (13), a fourth mounting hole is formed in the nut support (154), and a bolt (155) is mounted in the fourth mounting hole, abutted against the end face of the bolt (153) and enables the pin part of the bolt (153) to be clamped with the tooth position on the ratchet wheel (151).

8. The PTC electric heater according to claim 2, wherein the heat sink assembly comprises a first heat sink (21) and a second heat sink (22), the second heat sink (22) is plural in number, the first heat sink (21) and both sides of the heat generating assembly are attached to each other, the second heat sink (22) and the first heat sink (21) are attached to each other, and

but first fin (21) with the laminating contact surface that second fin (22) laminated mutually and the laminating contact surface of second fin (22) both sides is provided with nested structure, and makes first fin (21) with second fin (22) pass through but nested structure is nested connection each other, adjacent two but second fin (22) pass through but nested structure is nested connection each other.

9. The PTC electric heater according to claim 8, wherein the nestable structure comprises a boss (23) and a first groove (24), the boss (23) and the first groove (24) are nested and connected with each other, wherein the boss (23) or the first groove (24) is arranged on the joint contact surface of the first heat sink (21) and the second heat sink (22); the first groove (24) is arranged on the joint contact surface of one side of the second radiating fin (22), the boss (23) is arranged on the joint contact surface of the other side of the second radiating fin (22), and the boss is used for preventing the second radiating fin from being damaged

Two adjacent second radiating fins (22) are connected with each other in a nested manner through the boss (23) and the first groove (24), and the first radiating fin (21) and the second radiating fin (22) are connected with each other in a nested manner through the boss (23) and the first groove (24).

10. The PTC electric heater according to claim 3, wherein a heat conducting and insulating adhesive layer (311) is disposed on the inner wall of the aluminum insulating groove (31), and the heat conducting and insulating adhesive layer (311) on one side of the aluminum insulating groove (31) has a plurality of second grooves (311a) disposed at intervals, and the second grooves (311a) are used for accommodating the insertion parts of the electric conduction insertion sheet (32) and the insulating insertion sheet (33) and enabling the insertion parts of the electric conduction insertion sheet (32) and the insulating insertion sheet (33) and two adjacent electrode sheets to contact with each other.

11. The PTC electric heater according to claim 10, wherein the ends of both side surfaces of the aluminum-insulating tank (31) are provided with third grooves (312) at intervals, the third grooves (312) on the ends of both side surfaces are aligned with each other, and the third grooves (312) of one side end of the aluminum-insulating tank (31) provided with second grooves (311a) are located on both sides of the second grooves (311a), the third grooves (312) being used for accommodating and hermetically connecting the end cover portions of the conductive insert sheet (32) and the insulating insert sheet (33) and the aluminum-insulating tank (31).

12. The PTC electric heater according to claim 3, wherein the electrode sheets include a first electrode sheet (34), a second electrode sheet (35), a third electrode sheet (36), and a fourth electrode sheet (37), wherein the first electrode sheet (34) is attached to one side of the ceramic sheet, and the length of the first electrode sheet (34) corresponds to the sum of the lengths of the plurality of ceramic sheets;

the second electrode sheet (35), the third electrode sheet (36) and the fourth electrode sheet (37) are attached to the other side of the ceramic sheet at intervals, the second electrode sheet (35) and the fourth electrode sheet (37) are positioned at two ends of the ceramic sheet, the third electrode sheet (36) is positioned between the second electrode sheet (35) and the fourth electrode sheet (37),

the lengths of the second electrode plate (35) and the fourth electrode plate (37) are both greater than the length of the third electrode plate (36), the length of the third electrode plate (36) is less than the length of each ceramic piece, the third electrode plate (36) is positioned in the middle of the ceramic pieces,

the conductive insertion sheet (32) or the insulating insertion sheet (33) is inserted between the two adjacent second electrode sheets (35) and the third electrode sheets (36), between the two adjacent third electrode sheets (36), and between the two adjacent third electrode sheets (36) and the fourth electrode sheets (37).

13. The PTC electric heater according to claim 3, wherein the ceramic sheets include a first ceramic sheet (38) and a second ceramic sheet (39), wherein the first ceramic sheet (38) is plural in number and the first ceramic sheet (38) is a power ceramic sheet, the second ceramic sheet (39) is two in number and the second ceramic sheet (39) is a zero-power ceramic sheet, and the second ceramic sheet (39) is attached to both ends of a first electrode sheet (34), and a plurality of the first ceramic sheets (38) are attached to the first electrode sheet (34) in series side by side and located between the two second ceramic sheets (39).

14. PTC electric heater according to claim 3, characterized in that the conductive tab (32) and the insulating tab (33) each have a tab part and an end cap part, wherein the end cap parts of the conductive tab (32) and the insulating tab (33) are made of insulating material; the inserting piece part of the conductive inserting piece (32) is made of a conductive material; the inserting piece part of the insulating inserting piece (33) is made of insulating materials.

15. The PTC electric heater according to claim 14, wherein the conductive tab (32) comprises a single pin conductive tab and a two pin conductive tab, wherein the single pin conductive tab has one tab portion; the double-pin conductive insertion sheet is provided with two insertion sheet parts, and the two insertion sheet parts are mutually conducted.

16. The PTC electric heater according to claim 14, wherein the conductive tab (32) and the insulating tab (33) are located at one side of the end cover portion, and when the conductive tab (32) and the insulating tab (33) are inserted between two adjacent electrode tabs,

the insert part is positioned in a second groove (311a) of the insulating aluminum slot (31);

the end cover part and one side that inserted sheet portion is connected are the fourth recess of height in the middle of all around, and the width of fourth recess is not less than the width between insulating aluminium groove (31) both sides face, so that the fourth recess is used for holding the part between two adjacent third recesses (312) on insulating aluminium groove (31).

17. A heating apparatus characterized by having a heat-generating body, and the heat-generating body is a PTC electric heater according to any one of claims 1 to 16.

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