PTC electric heater, heating device and method for regulating heating amount of PTC electric heater

Abstract

The present invention discloses a PTC electric heater, a heating device and a method for adjusting the heating amount of the PTC electric heater, which relates to the field of heating technology and solves the technical problem that the heating amount of the PTC electric heater developed in the prior art has a low matching success rate with the heating amount required by the heating device. The PTC electric heater of the present invention comprises a support mechanism and an electric heating mechanism, wherein the electric heating mechanism comprises a heat sink assembly and a heating assembly, and the heat sink assembly is installed on both sides of the heating assembly; the support mechanism is arranged at both ends of the electric heating mechanism and is rotatably connected to the electric heating mechanism, and a ratchet assembly is arranged on the support mechanism, and the ratchet assembly is used to adjust the installation angle of the electric heating mechanism to adjust the oncoming wind speed of the electric heating mechanism. The PTC electric heater of the present invention can not only adjust the heating amount of the PTC electric heater and improve the matching success rate of the heating amount of the PTC electric heater with the heating amount required by the heating device, but also has the advantages of no restrictions on installation space and low cost.

Description

Technical Field

[0001] The present invention relates to the field of heating technology, and in particular to a PTC electric heater, a heating device comprising the PTC electric heater, and a method for adjusting the heating amount of the PTC electric heater. Background Art

[0002] The PTC electric heater is an automatic constant temperature, power-saving electric heater with the advantages of low thermal resistance and high heat exchange efficiency. In any application, it will not produce the phenomenon of "reddening" on the surface of the electric heating tube heater, which can avoid fire and other safety hazards. Therefore, many heating devices now use PTC electric heaters to achieve heating functions, such as air conditioners, heaters, etc. However, PTC electric heaters also have shortcomings in specific applications. Specifically, the application of electric heating tube heaters can ensure that the heating capacity of the heating device is developed and completed at one time; when the PTC electric heater is used as a heater for the heating device, according to the matching test of each newly developed PTC heating device, the PTC electric heater made by the manufacturer based on the product requirements can basically not meet the needs of the heating device at one time. The power of the PTC electric heater is often generally high or low, resulting in a lower matching success rate between the PTC electric heater and the heating device. When this happens, it is necessary to require the manufacturer to re-adjust or increase the power of the PTC electric heater to meet the needs of the heating device. As a result, it often takes a lot of time to match the heating capacity, resulting in a large waste of time and resources.

[0003] Patent publication number CN111089421A discloses a heating device, which uses a stepper motor to drive the PTC heating element to rotate, adjusts the wind speed facing the PTC heating element, and thus adjusts the heating capacity of the PTC heating element. However, the patent has the following shortcomings: (1) Using a motor to drive the PTC heating element to rotate requires a certain installation space for the heating device as a whole, and this PTC heating element is not suitable for occasions with a small installation space; (2) Using a motor to drive the PTC heating element to rotate will increase a series of related products such as wires and electrical components to control the motor, resulting in higher costs; (3) Although the PTC heating element can change the heating capacity of the heating device, it cannot change the power of the PTC electric heater, and is not suitable for occasions where customers have strict power requirements.

[0004] Therefore, there is an urgent need to improve the PTC electric heater and the heating amount adjustment method thereof in the prior art. Summary of the invention

[0005] One of the purposes of the present invention is to provide a PTC electric heater, a heating device and a method for adjusting the heating capacity of the PTC electric heater, which solves the technical problem that the heating capacity of the PTC electric heater developed in the prior art has a low success rate in matching the heating capacity required by the heating device. The many technical effects that can be produced by the preferred technical solution of the present invention are described in detail below.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The PTC electric heater of the present invention comprises a support mechanism and an electric heating mechanism, wherein the electric heating mechanism comprises a heat sink assembly and a heating assembly, and the heat sink assembly is installed on both sides of the heating assembly; the support mechanism is arranged at both ends of the electric heating mechanism and is rotatably connected to the electric heating mechanism, and a ratchet assembly is arranged on the support mechanism, and the ratchet assembly is used to adjust the installation angle of the electric heating mechanism to adjust the headwind speed of the electric heating mechanism.

[0008] According to a preferred embodiment, the heat sink assembly includes a plurality of heat sinks, and the plurality of heat sinks can be nested and connected, so that the heat dissipation area of ​​the electric heating mechanism can be adjusted by increasing or decreasing the number of the heat sinks.

[0009] According to a preferred embodiment, the heating component includes an insulating aluminum groove, a heating element and a plug-in element, the heating element is placed in the insulating aluminum groove, the heating element includes multiple electrode sheets and multiple ceramic sheets, and the multiple ceramic sheets are arranged side by side, and the multiple electrode sheets are attached to the ceramic sheets and arranged at intervals; the plug-in element includes a conductive plug-in and an insulating plug-in, the conductive plug-in and the insulating plug-in are plugged between two adjacent electrode sheets and contact the electrode sheets on both sides, and the heating component can adjust the power of the ceramic sheet heating by increasing or decreasing the number of the conductive plug-in and the insulating plug-in.

[0010] According to a preferred embodiment, 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 two ends of the electric heating mechanism respectively, and the ratchet assembly is arranged on the second support mechanism.

[0011] According to a preferred embodiment, the first support mechanism includes a first shaft seat and a first end shaft, the first shaft seat is provided with a first mounting hole, the first end shaft has a first mounting portion, a second mounting portion and a first fixing hole, wherein the first mounting portion is rotatably mounted in the first mounting hole, and the second mounting portion and the first fixing hole are used to install and fix the electric heating mechanism.

[0012] According to a preferred embodiment, the second support mechanism includes 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 has a third mounting portion, a fourth mounting portion and a second fixing hole, wherein the third mounting portion is rotatably mounted in the second mounting hole, and the fourth mounting portion and the second fixing hole are used to install and fix the electric heating mechanism; and the ratchet assembly includes a ratchet and an adjusting member, wherein the ratchet is arranged on the third mounting portion, and the adjusting member is installed in the third mounting hole and is used to engage with the teeth on the ratchet.

[0013] According to a preferred embodiment, the second mounting hole is a stepped hole, the third mounting portion is mounted in the hole with a smaller aperture of the second mounting hole, the ratchet is mounted in the hole with a larger aperture of the second mounting hole, and the aperture of the hole with a larger aperture is larger than the outer diameter of the ratchet; the adjusting member comprises a spring, a latch, a nut bracket and a bolt, wherein the spring is sleeved on the latch, the third mounting hole is aligned with the hole with a larger aperture of the second mounting hole, the third mounting hole is a stepped hole, the hole with a larger aperture of the third mounting hole is composed of a cylindrical hole and a rectangular hole, the cylindrical part of the spring and the latch is mounted in the cylindrical hole, the square boss of the latch is mounted in the rectangular hole, and the hole with a smaller aperture of the third mounting hole is used to mount the latch portion of the latch; the nut bracket is fixed on the second shaft seat, and a fourth mounting hole is provided on the nut bracket, the bolt is mounted in the fourth mounting hole and abuts against the end face of the latch so that the latch portion of the latch is engaged with the tooth position on the ratchet.

[0014] According to a preferred embodiment, the heat sink assembly includes a first heat sink and a second heat sink, the number of the second heat sinks is multiple, the first heat sink and the two sides of the heat generating assembly are mutually fitted, the second heat sink and the first heat sink are mutually fitted, and the fitting contact surfaces between the first heat sink and the second heat sink and the fitting contact surfaces on both sides of the second heat sink are provided with a nestable structure, and the first heat sink and the second heat sink are mutually nested and connected through the nestable structure, and two adjacent second heat sinks are mutually nested and connected through the nestable structure.

[0015] According to a preferred embodiment, the nestable structure includes a boss and a first groove, and the boss and the first groove are nested and connected with each other, wherein the boss or the first groove is arranged on the fitting contact surface where the first heat sink and the second heat sink are fitted together; the first groove is arranged on the fitting contact surface on one side of the second heat sink, and the boss is arranged on the fitting contact surface on the other side of the second heat sink, and two adjacent second heat sinks are nested and connected with each other through the boss and the first groove, and the first heat sink and the second heat sink are nested and connected with each other through the boss and the first groove.

[0016] According to a preferred embodiment, a thermally conductive insulating adhesive layer is provided on the inner wall of the insulating aluminum groove, and the thermally conductive insulating adhesive layer located on one side of the insulating aluminum groove has a plurality of second grooves arranged at intervals, and the second grooves are used to accommodate the plug-in parts of the conductive plug and the insulating plug and make the plug-in parts of the conductive plug and the insulating plug contact with two adjacent electrode sheets.

[0017] According to a preferred embodiment, third grooves are arranged at intervals at the ends of both side surfaces of the insulating aluminum groove, the third grooves on the ends of both side surfaces are aligned with each other, and the third groove on one end of the second groove provided on the insulating aluminum groove is located on both sides of the second groove, and the third groove is used to accommodate the end cover parts of the conductive plug and the insulating plug and to seal the conductive plug and the end cover parts of the insulating plug with the insulating aluminum groove.

[0018] According to a preferred embodiment, the electrode sheet includes 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 multiple ceramic sheets; the second electrode sheet, the third electrode sheet and the fourth electrode sheet are attached to the other side of the ceramic sheet at intervals, and the second electrode sheet and the fourth electrode sheet are located at both ends of the ceramic sheet, the third electrode sheet is located between the second electrode sheet and the fourth electrode sheet, the lengths of the second electrode sheet and the fourth electrode sheet are both greater than the length of the third electrode sheet, the length of the third electrode sheet is less than the length of each ceramic sheet and the third electrode sheet is located in the middle of the ceramic sheet, and the conductive plug or the insulating plug is inserted between two adjacent second electrode sheets and the third electrode sheets, between two adjacent third electrode sheets, and between two adjacent third electrode sheets and the fourth electrode sheets.

[0019] According to a preferred embodiment, the ceramic sheet includes a first ceramic sheet and a second ceramic sheet, wherein the number of the first ceramic sheets is multiple and the first ceramic sheet is a power ceramic sheet, the number of the second ceramic sheets is two and the second ceramic sheet is a zero-power ceramic sheet, and the second ceramic sheet is adhered to both ends of the first electrode sheet, and multiple first ceramic sheets are continuously adhered side by side on the first electrode sheet and are located between two second ceramic sheets.

[0020] According to a preferred embodiment, the conductive plug and the insulating plug both have a plug portion and an end cover portion, wherein the end cover portions of the conductive plug and the insulating plug are both made of insulating material; the plug portion of the conductive plug is made of conductive material; and the plug portion of the insulating plug is made of insulating material.

[0021] According to a preferred embodiment, the conductive plug includes a single-pin conductive plug and a double-pin conductive plug, wherein the single-pin conductive plug has one plug portion; the double-pin conductive plug has two plug portions, and the two plug portions are conductive to each other.

[0022] According to a preferred embodiment, the insert portion of the conductive insert and the insulating insert is located on one side of the end cover portion, and when the conductive insert and the insulating insert are plugged between two adjacent electrode sheets, the insert portion is located in the second groove of the insulating aluminum groove; the side where the end cover portion is connected to the insert portion is a fourth groove that is high on all sides and low in the middle, and the width of the fourth groove is not less than the width between the two side surfaces of the insulating aluminum groove, so that the fourth groove is used to accommodate the portion between two adjacent third grooves on the insulating aluminum groove.

[0023] The heating device of the present invention has a heating element, and the heating element is the PTC electric heater described in any technical solution of the present invention.

[0024] The method for adjusting the heating amount of a PTC electric heater described in any technical solution of the present invention comprises the following manner: adjusting the installation angle of the electric heating mechanism by means of a ratchet assembly on a support mechanism to adjust the oncoming wind speed of the electric heating mechanism.

[0025] According to a preferred embodiment, the adjustment method further includes the following manner: adjusting the heat dissipation area of ​​the electric heating mechanism by increasing or decreasing the number of heat sinks in the heat sink assembly.

[0026] According to a preferred embodiment, the adjustment method further includes the following manner: adjusting the heating power of the ceramic sheet by increasing or decreasing the number of the conductive plugs and the insulating plugs.

[0027] The PTC electric heater, heating device and method for adjusting the heating amount of the PTC electric heater provided by the present invention have at least the following beneficial technical effects:

[0028] The PTC electric heater of the present invention is provided with a ratchet assembly on the support mechanism, and the installation angle of the electric heating mechanism can be adjusted by the ratchet assembly, thereby adjusting the wind speed facing the electric heating mechanism, and further adjusting the heating capacity of the PTC electric heater, 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 method of adjusting the installation angle of the electric heating mechanism by the ratchet assembly of the present invention has the advantages of no restrictions on installation space and low cost compared to the adjustment method of driving the PTC heating element to rotate by a motor in the prior art.

[0029] The heating device of the present invention has a heating element, and the heating element is a PTC electric heater of any technical solution in the present invention, so that the heating device of the present invention can adjust the heating amount of the PTC electric heater, reduce the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, improve the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device, and also has the advantages of no limitation on installation space and low cost.

[0030] The method for adjusting the heating amount of a PTC electric heater of any technical solution of the present invention adjusts the installation angle of the electric heating mechanism by a ratchet assembly on the support mechanism to adjust the oncoming wind speed of the electric heating mechanism, thereby adjusting the heating amount of the PTC electric heater, reducing the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, and improving the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device, and also has the advantages of no restrictions on installation space and low cost.

[0031] That is, the PTC electric heater, heating device and method for adjusting the heating amount of the PTC electric heater of the present invention solve the technical problem of low success rate in matching the heating amount of the PTC electric heater developed in the prior art with the heating amount required by the heating device.

[0032] In addition, the preferred technical solution of the present invention also has the following beneficial technical effects:

[0033] The heat sink assembly of the preferred technical solution of the present invention includes multiple heat sinks, and the multiple heat sinks can be nested and connected, so that the electric heating mechanism can adjust the heat dissipation area of ​​the electric heating mechanism by increasing or decreasing the number of heat sinks, thereby adjusting the heating amount of the PTC electric heater, further reducing the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, and improving the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device.

[0034] The heating component of the preferred technical solution of the present invention can adjust the power of the ceramic sheet heating by increasing or decreasing the number of conductive plugs and insulating plugs, thereby adjusting the power of the PTC electric heater, so that the PTC electric heater of the preferred technical solution of the present invention can be suitable for occasions where customers have strict power requirements; on the other hand, by increasing or decreasing the number of conductive plugs and insulating plugs to adjust the power of the ceramic sheet heating, and then adjusting the power of the PTC electric heater, the heating capacity of the PTC electric heater is also adjusted, which can further reduce the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device, and improve the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0036] Figure 1 It is an overall schematic diagram of a preferred embodiment of the PTC electric heater of the present invention;

[0037] Figure 2 It is an exploded view of a preferred embodiment of the PTC electric heater of the present invention;

[0038] Figure 3 is a schematic diagram of a preferred embodiment of the first shaft seat of the present invention;

[0039] Figure 4 is a schematic diagram of a preferred embodiment of the first end shaft of the present invention;

[0040] Figure 5 is a schematic diagram of a preferred embodiment of the second axle seat of the present invention;

[0041] Figure 6 is a cross-sectional view of a preferred embodiment of the second axle seat of the present invention;

[0042] Figure 7 is a first schematic diagram of a preferred embodiment of the second end shaft of the present invention;

[0043] Figure 8 is a second schematic diagram of a preferred embodiment of the second end shaft of the present invention;

[0044] Fig. 9 It is a schematic diagram of a preferred embodiment of the cooperation between the bolt and the nut bracket of the present invention;

[0045] Fig.10This is a schematic diagram of a preferred embodiment of the bolt and spring matching of the present invention.

[0046] Fig.11 is a schematic diagram of a preferred embodiment of the ratchet assembly of the present invention;

[0047] Fig.12 It is a schematic diagram of the cooperation between the second shaft seat, the second end shaft and the ratchet assembly of the present invention;

[0048] Fig.13 is a first schematic diagram of the first heat sink and the second heat sink of the present invention being attached to each other;

[0049] Fig.14 is a second schematic diagram of the first heat sink and the second heat sink of the present invention being attached to each other;

[0050] Fig.15 It is a schematic diagram of a preferred embodiment of the insulating aluminum slot of the present invention;

[0051] Fig.16 yes Fig.15 A partial enlarged view of

[0052] Fig.17 It is a schematic diagram of a preferred embodiment of the conductive plug of the present invention;

[0053] Fig.18 is a schematic diagram of another preferred embodiment of the conductive plug of the present invention;

[0054] Fig.19 It is a schematic diagram of a preferred embodiment of the insulating plug of the present invention;

[0055] Fig. 20 Schematic diagram of a preferred embodiment of the heating element of the present invention;

[0056] Fig.21 is a schematic diagram of a preferred embodiment of the first electrode sheet of the present invention;

[0057] Fig. 22 is a schematic diagram of a preferred embodiment of the second electrode sheet of the present invention;

[0058] Fig.23 is a schematic diagram of a preferred embodiment of the third electrode sheet of the present invention;

[0059] Fig.24 is a schematic diagram of a preferred embodiment of the fourth electrode sheet of the present invention;

[0060] Fig.25 is a schematic diagram of the arrangement of the first ceramic sheet and the second ceramic sheet of the present invention;

[0061] Fig.26 This is a first schematic diagram of the cooperation between the insert assembly and the heating assembly of the present invention;

[0062] Fig. 27 is a second schematic diagram of the cooperation between the insert assembly and the heating assembly of the present invention;

[0063] Fig.28 It is an overall schematic diagram of the electric heating mechanism of the present invention.

[0064] In the figure: 11, first shaft seat; 111, first mounting hole; 12, first end shaft; 121, first mounting portion; 122, second mounting portion; 123, first fixing hole; 13, second shaft seat; 131, second mounting hole; 132, third mounting hole; 14, second end shaft; 141, third mounting portion; 142, fourth mounting portion; 143, second fixing hole; 151, ratchet; 152, spring; 153, latch; 154, screw Mother bracket; 155, bolt; 21, first heat sink; 22, second heat sink; 23, boss; 24, first groove; 31, insulating aluminum groove; 311, thermally conductive insulating adhesive layer; 311a, second groove; 312, third groove; 32, conductive plug; 33, insulating plug; 34, first electrode sheet; 35, second electrode sheet; 36, third electrode sheet; 37, fourth electrode sheet; 38, first ceramic sheet; 39, second ceramic sheet. DETAILED DESCRIPTION

[0065] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0066] The following is attached to the instruction manual Figures 1 to 28 And embodiments 1 to 6 describe in detail the PTC electric heater, the heating device and the method for adjusting the heating amount of the PTC electric heater of the present invention.

[0067] Example 1

[0068] This embodiment describes the PTC electric heater of the present invention in detail.

[0069] The PTC electric heater of this embodiment includes a support mechanism and an electric heating mechanism. Figure 1 Preferably, the electric heating mechanism includes a heat sink assembly and a heating assembly, and the heat sink assembly is installed on both sides of the heating assembly, such as Figure 2The heating component is used for heating, and the heat sink component is used for dissipating the heat generated by the heating component. Preferably, the support mechanism is arranged at both ends of the electric heating mechanism and is rotatably connected to the electric heating mechanism, and a ratchet assembly is arranged on the support mechanism, and the ratchet assembly is used to adjust the installation angle of the electric heating mechanism to adjust the oncoming wind speed of the electric heating mechanism, such as Figure 1 or Figure 2 The structure for adjusting the installation angle of the electric heating mechanism is not limited to the ratchet assembly, but can also be any structure with similar functions. The ratchet assembly of this embodiment is an intermittent rotating mechanism, and a continuous rotating mechanism can also be used.

[0070] The PTC electric heater of this embodiment is provided with a ratchet assembly on the support mechanism, and the installation angle of the electric heating mechanism can be adjusted by the ratchet assembly, thereby adjusting the oncoming wind speed of the electric heating mechanism, and further adjusting the heating amount of the PTC electric heater, reducing the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, and improving the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device. Compared with the adjustment method of the prior art in which the PTC heating element is driven to rotate by a motor, the method of adjusting the installation angle of the electric heating mechanism by the ratchet assembly in this embodiment has the advantages of unrestricted installation space and low cost. That is, the PTC electric heater of this embodiment solves the technical problem of the low matching success rate of the heating amount of the PTC electric heater developed in the prior art and the heating amount required by the heating device.

[0071] According to a preferred embodiment, the heat sink assembly includes a plurality of heat sinks, such as Figure 2 As shown. Preferably, a plurality of heat sinks can be nested and connected, and the electric heating mechanism can adjust the heat dissipation area of ​​the electric heating mechanism by increasing or decreasing the number of heat sinks. The nested connection of a plurality of heat sinks can also be said to be a plurality of heat sinks snap-connected. Not limited to this, the plurality of heat sinks can also be in the form of other detachable connections. The heat sink assembly of the preferred technical solution of this embodiment includes a plurality of heat sinks that can be nested and connected, so that the electric heating mechanism can adjust the heat dissipation area of ​​the electric heating mechanism by increasing or decreasing the number of heat sinks, thereby adjusting the heating amount of the PTC electric heater, further reducing the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, and improving the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device.

[0072] According to a preferred embodiment, the heating assembly includes an insulating aluminum slot 31, a heating element and a plug-in element, such as Figure 2 Preferably, the heating element is placed in the insulating aluminum slot 31, and the heating element includes 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, as shown in FIG. Fig.25 or Fig.26Preferably, the plug element includes a conductive plug 32 and an insulating plug 33, which are inserted between two adjacent electrode sheets and contact the electrode sheets on both sides, and the heating component can adjust the power of the ceramic sheet heating by increasing or decreasing the number of the conductive plug 32 and the insulating plug 33, as shown in FIG. Figures 26-28 As shown. Specifically, by increasing or decreasing the number of conductive plugs 32 and insulating plugs 33, the number of heating ceramic sheets can be adjusted, that is, the number of power ceramic sheets can be adjusted, thereby adjusting the power of the heating of the ceramic sheets. The heating component of the preferred technical solution of this embodiment can adjust the power of the heating of the ceramic sheets by increasing or decreasing the number of conductive plugs 32 and insulating plugs 33, thereby adjusting the power of the PTC electric heater, so that the PTC electric heater of the preferred technical solution of this embodiment can be suitable for occasions where customers have strict power requirements; on the other hand, by increasing or decreasing the number of conductive plugs 32 and insulating plugs 33 to adjust the power of the heating of the ceramic sheets, and then adjusting the power of the PTC electric heater, the heating capacity of the PTC electric heater is also adjusted, which can further reduce the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device, and improve the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device.

[0073] The PTC electric heater of the preferred technical solution of this embodiment has a compact structure, is easy to install, and is simple to operate. The heating amount and power can be conveniently adjusted. Through the coordination of various methods, the matching success rate between the PTC electric heater and the heating device is greatly improved, and the waste of time and resources is greatly reduced.

[0074] Example 2

[0075] Based on Example 1, this example describes in detail the specific structure of the support mechanism.

[0076] According to a preferred embodiment, 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 the two ends of the electric heating mechanism respectively, and the ratchet assembly is arranged on the second support mechanism. Not limited to this, the ratchet assembly can also be placed on the first support mechanism; the ratchet assembly can also be arranged on the first support mechanism and the second support mechanism at the same time.

[0077] According to a preferred embodiment, the first support mechanism includes a first shaft seat 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 to mount and fix the electric heating mechanism, such as Figure 3 and Figure 4More preferably, the first mounting portion 121 is a cylindrical shaft, and the first mounting hole 111 is a cylindrical hole that matches the cylindrical shaft, and the cylindrical shaft can rotate freely in the cylindrical hole. More preferably, the fixed support leg at the bottom of the first shaft seat 11 is provided with two long waist holes, which can be used to fine-tune the position when installing the entire PTC electric heater, such as Figure 3 More preferably, the end of the cylindrical shaft of the first end shaft 12 away from the first shaft seat 11 is a square boss, and a square hole is formed on the square boss, and the square hole is used to install the end of the electric heating mechanism; a first fixing hole 123 is formed on the side of the square boss, and the electric heating mechanism and the first end shaft 12 can be fixedly connected by a screw installed in the first fixing hole 123, as shown in FIG. Figure 4 shown.

[0078] According to a preferred embodiment, the second support mechanism includes a second shaft seat 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 has 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 to mount and fix the electric heating mechanism, such as Figures 5 to 8 Preferably, the ratchet assembly includes a ratchet 151 and an adjusting member, wherein the ratchet 151 is disposed on the third mounting portion 141, and the adjusting member is mounted in the third mounting hole 132 and is used to engage with the teeth on the ratchet 151, as shown in FIG. Figures 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 and can rotate freely in the second mounting hole 131. More preferably, the fixed support leg at the bottom of the second shaft seat 13 is provided with two circular holes, and the circular holes can be used to install the entire PTC electric heater, such as Figure 5 More preferably, the end of the cylindrical shaft of the second end shaft 14 away from the second shaft seat 13 is a square boss, and a square hole is formed on the square boss, and the square hole is used to install the end of the electric heating mechanism; a second fixing hole 143 is formed on the side of the square boss, and the electric heating mechanism and the second end shaft 14 can be fixedly connected by a screw installed in the second fixing hole 143, as shown in FIG. Figure 7 shown.

[0079] According to a preferred embodiment, the second mounting hole 131 is a stepped hole, the third mounting portion 141 is mounted in the hole with a smaller aperture of the second mounting hole 131, the ratchet 151 is mounted in the hole with a larger aperture of the second mounting hole 131, and the aperture of the hole with a larger aperture is larger than the outer diameter of the ratchet 151, so that the ratchet 151 can rotate easily. Figure 6 The adjusting member includes a spring 152, a latch 153, a nut bracket 154 and a bolt 155, wherein the spring 152 is sleeved on the latch 153, as shown in FIG. Figures 9 to 12 The third mounting hole 132 is located above the second mounting hole 131 with a larger aperture. The third mounting hole 132 is a stepped hole. The larger aperture of the third mounting hole 132 is composed of a cylindrical hole and a rectangular hole. The spring 152 and the cylindrical part of the latch 153 are installed in the cylindrical hole, and the square boss of the latch 153 is installed in the rectangular hole. The smaller aperture of the third mounting hole 132 is used to install the latch part of the latch 153, as shown in FIG. Figure 6 or Fig.12 The square boss of the latch 153 is installed in the rectangular hole to limit the rotation of the latch 153. The nut bracket 154 is fixed to the second shaft seat 13, and the nut bracket 154 is provided with a fourth mounting hole. The bolt 155 is installed in the fourth mounting hole and abuts against the end surface of the latch 153 so that the latch portion of the latch 153 is engaged with the tooth position on the ratchet 151, as shown in FIG. Fig.11 or Fig.12 Specifically, two threaded holes are provided on the second shaft seat 13 for fixing the nut bracket 154, and the bolt 155 is installed in the fourth mounting hole of the nut bracket 154. The bolt 155 can be tightened by tightening the bolt 155. The stepped hole mentioned in the preferred technical solution of this embodiment refers to at least two holes with different apertures in the second mounting hole 131 and the third mounting hole 132, and the two holes are stepped.

[0080] like Fig.11 or Fig.12 As shown, the ratchet assembly of the preferred technical solution of this embodiment adjusts the installation angle of the electric heating mechanism in the following manner: loosen the bolt 155 on the nut bracket 154, so that the bolt 155 is loosened and rises to a certain height, at which time the spring 152 is reset, and the pin 153 is lifted to a certain height under the action of the elastic force of the spring 152, so that the pin 153 is separated from the tooth groove of the ratchet 151 in the second end shaft 14 by a certain height, so that the pin 153 no longer restricts the rotation of the ratchet 151, so that the electric heating mechanism can be rotated to a certain angle; when the electric heating mechanism is adjusted to a suitable angle, tighten the bolt 155 on the nut bracket 154 to push the pin 153 downward, compress the spring 152, and at this time the pin 153 moves downward and is inserted into the tooth groove of the ratchet 151, thereby restricting the rotation of the ratchet 151, so that the electric heating mechanism is fixed at a suitable angle.

[0081] Example 3

[0082] Based on the first embodiment, this embodiment describes in detail the specific structure of the heat sink assembly.

[0083] According to a preferred embodiment, the heat sink assembly includes a first heat sink 21 and a second heat sink 22, the number of the second heat sink 22 is multiple, the first heat sink 21 is attached to both sides of the heating component, and the second heat sink 22 is attached to the first heat sink 21. Fig.13 or Fig.14 As shown. Preferably, the fitting contact surface where the first heat sink 21 and the second heat sink 22 fit together and the fitting contact surfaces on both sides of the second heat sink 22 are provided with a nestable structure, and the first heat sink 21 and the second heat sink 22 are nested and connected to each other through the nestable structure, and the two adjacent second heat sinks 22 are nested and connected to each other through the nestable structure. More preferably, the first heat sink 21 and the second heat sink 22 are corrugated heat sinks. The first heat sink 21 can also be said to be a basic heat sink, and the second heat sink 22 can also be said to be an extended heat sink. By increasing or decreasing the number of second heat sinks 22, the heat dissipation area of ​​the electric heating mechanism can be adjusted, thereby adjusting the heating amount of the PTC electric heater. During the mutual nesting installation process of the second heat sink 22 and the first heat sink 21, and the mutual nesting installation process of the second heat sink 22 and the second heat sink 22, it is necessary to add a high-temperature resistant heat-conductive insulating adhesive layer on the contact surface of the two to ensure that the installation of the two adjacent heat sinks is firm and reliable and has good thermal conductivity.

[0084] According to a preferred embodiment, the nestable structure includes a boss 23 and a first groove 24, and the boss 23 and the first groove 24 are nested and connected with each other. Fig.14 Preferably, a boss 23 or a first groove 24 is provided on the contact surface where the first heat sink 21 and the second heat sink 22 are in contact with each other; a first groove 24 is provided on one side of the contact surface of the second heat sink 22, and a boss 23 is provided on the other side of the contact surface of the second heat sink 22, and two adjacent second heat sinks 22 are connected to each other by the boss 23 and the first groove 24, and the first heat sink 21 and the second heat sink 22 are connected to each other by the boss 23 and the first groove 24. Fig.14 More preferably, the boss 23 and the first groove 24 are arranged at the upper and lower ends of the contact surface of the first heat sink 21 and / or the second heat sink 22 .

[0085] Specifically, the upper and lower ends of the fitting contact surface where the first heat sink 21 and the second heat sink 22 fit together are provided with bosses 23, the upper and lower ends of the fitting contact surface on one side of the second heat sink 22 are provided with first grooves 24, and the upper and lower ends of the fitting contact surface on the other side of the second heat sink 22 are provided with bosses 23. Fig.14 The first heat sink 21 has a side with a boss 23 and the second heat sink 22 has a side with a first groove 24, and the boss 23 is snapped into the first groove 24, thereby achieving a nested connection between the first heat sink 21 and the second heat sink 22. Fig.14 Similarly, one side of the second heat sink 22 with the boss 23 is in contact with one side of another second heat sink 22 with the first groove 24, and the boss 23 is snapped into the first groove 24, thereby achieving a nested connection between two adjacent second heat sinks 22.

[0086] Without limitation to this, the nestable structure of the preferred technical solution of this embodiment may also be other snap-on structures in the prior art. Without limitation to this, the first heat sink 21 and the second heat sink 22, and the two adjacent second heat sinks 22 in the preferred technical solution of this embodiment may also be detachably connected by other detachable structures in the prior art.

[0087] According to a preferred embodiment, the heat dissipation area of ​​the second heat sink 22 can be made into different sizes based on different heating requirements, but it is necessary to match the nestable structural dimensions of all the second heat sinks 22, thereby ensuring that all the second heat sinks 22 and the first heat sink 21, or the second heat sinks 22 and the second heat sinks 22 can be smoothly installed.

[0088] According to a preferred embodiment, both ends of the first heat sink 21 are designed as stepped boss structures, so that the parts where both ends of the first heat sink are mounted on the first end shaft 12 and the second end shaft 14 are lower than the height of the first heat sink 21, thereby reducing the size of the second mounting portion 122 on the first end shaft 12 and the fourth mounting portion 142 on the second end shaft 14. Fig.13 shown.

[0089] Example 4

[0090] Based on the first embodiment, this embodiment describes in detail the specific structure of the heating component.

[0091] According to a preferred embodiment, the inner wall of the insulating aluminum groove 31 is provided with a heat-conducting insulating adhesive layer 311, such as Fig.15 or Fig.16 Preferably, the heat-conducting insulating adhesive layer 311 located 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 to accommodate the plug-in parts of the conductive plug 32 and the insulating plug 33 and make the plug-in parts of the conductive plug 32 and the insulating plug 33 contact with two adjacent electrode sheets, as shown in FIG. Fig.16 As shown. More preferably, the thermally conductive insulating adhesive layer 311 is made of high temperature resistant thermally conductive insulating adhesive. Specifically, the thermally conductive insulating adhesive layer 311 located on the left side and bottom of the inner wall of the insulating aluminum groove 31 is of uniform thickness, and the thermally conductive insulating adhesive layer 311 located on the right side of the inner wall of the insulating aluminum groove 31 has a plurality of second grooves 311a arranged at intervals, and the thickness at the second grooves 311a is consistent with the thickness of the thermally conductive insulating adhesive layer 311 on the left side and bottom of the inner wall of the insulating aluminum groove 31, and the thickness at the second grooves 311a is not greater than the thickness of the thermally conductive insulating adhesive layer 311 on the left side and bottom of the inner wall of the insulating aluminum groove 31, as shown. Fig.16 shown.

[0092] Preferably, when the heating element is placed in the insulating aluminum groove 31, the upper part of the heating element and both ends of the inside of the insulating aluminum groove 31 are sealed with a certain thickness of high-temperature resistant thermally conductive insulating glue, thereby ensuring that the heating element is completely isolated from the aluminum surface of the insulating aluminum groove 31 by the high-temperature resistant thermally conductive insulating glue; at the same time, it is necessary to ensure that the second groove 311a is not sealed by the high-temperature resistant thermally conductive insulating glue, so as to facilitate the placement of the plug-in element in the second groove 311a.

[0093] According to a preferred embodiment, the ends of the two sides of the insulating aluminum groove 31 are spaced apart with third grooves 312, such as Fig.16 Preferably, the third grooves 312 on the ends of the two side surfaces are aligned with each other, and the third groove 312 on one end of the second groove 311a provided on the insulating aluminum groove 31 is located on both sides of the second groove 311a, and the third groove 312 is used to accommodate the end cover parts of the conductive plug 32 and the insulating plug 33 and make the end cover parts of the conductive plug 32 and the insulating plug 33 sealed and connected to the insulating aluminum groove 31, as shown in FIG. Fig.16 When the insert element is inserted into the second groove 311a, the insert part of the insert element fills the gap between the second groove 311a and the heating element, ensuring that the insert part of the insert element and the heating element are in good contact, and the end cover of the insert element can be just engaged with the third groove 312, thereby ensuring that the second groove 311a in the insulating aluminum groove 31 is covered, thereby achieving good sealing.

[0094] According to a preferred embodiment, the electrode sheet includes a first electrode sheet 34, a second electrode sheet 35, a third electrode sheet 36 and a fourth electrode sheet 37. Figures 21 to 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 is equal to the sum of the lengths of the plurality of ceramic sheets, as shown in FIG. Fig.21 As shown. The first electrode sheet 34 can also be called a long electrode sheet, and a plurality of ceramic sheets are continuously and neatly attached to 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, and 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. Fig.26 The second electrode sheet 35, the third electrode sheet 36 and the fourth electrode sheet 37 are all relatively short electrode sheets. The second electrode sheet 35, the third electrode sheet 36 and the fourth electrode sheet 37 are spaced and attached to the other side of the ceramic sheet to form segmented electrode sheets, as shown in FIG. Fig.26More preferably, 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, 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, and the conductive plug 32 or the insulating plug 33 is inserted between two adjacent second electrode sheets 35 and the third electrode sheets 36, between two adjacent third electrode sheets 36, and between two adjacent third electrode sheets 36 and the fourth electrode sheet 37, as shown in FIG. Figures 26-28 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. 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. Fig.26 As shown, for example: the length of the third electrode sheet 36 is 5 mm shorter than the length of each ceramic sheet. When the third electrode sheet 36 is attached to the middle of each ceramic sheet, both ends of the third electrode sheet 36 are 2.5 mm shorter than both ends of the ceramic sheet, so that two adjacent third electrode sheets 36 can be contacted by inserting the conductive plug 32, or two adjacent third electrode sheets 36 can be isolated by inserting the insulating plug 33.

[0095] Preferably, the ends of the first electrode sheet 34 and the second electrode sheet 35 are welded with plug-in sheets for plugging in the terminals of the wires, such as Fig.21 or Fig. 22 shown.

[0096] According to a preferred embodiment, the ceramic sheet includes a first ceramic sheet 38 and a second ceramic sheet 39. Fig.25 As shown. Preferably, the number of the first ceramic sheets 38 is multiple and the first ceramic sheets 38 are power ceramic sheets, the number of the second ceramic sheets 39 is two and the second ceramic sheets 39 are zero power ceramic sheets. More preferably, the second ceramic sheets 39 are attached to both ends of the first electrode sheet 34; multiple first ceramic sheets 38 are continuously attached side by side on the first electrode sheet 34 and are located between two second ceramic sheets 39, as a heating element, such as Fig.25 As shown. The power ceramic sheet mentioned in the preferred technical solution of this embodiment refers to a ceramic sheet that can generate heat, and the zero-power ceramic sheet refers to a ceramic sheet that does not generate heat. The preferred technical solution of this embodiment attaches the zero-power ceramic sheet to both ends of the first electrode sheet 34, so that when the PTC electric heating is working, the two ends of the electric heating mechanism do not generate heat.

[0097] According to a preferred embodiment, the conductive plug 32 and the insulating plug 33 each have a plug portion and an end cap portion. Figures 17 to 19As shown. Preferably, the end caps of the conductive plug 32 and the insulating plug 33 are both made of insulating materials; the plug portion of the conductive plug 32 is made of conductive material; the plug portion of the insulating plug 33 is made of insulating material. Specifically, the conductive plug 32 and the insulating plug 33 have the same appearance structure, the difference is that the plug portion of the conductive plug 32 is made of conductive material, and the plug portion of the insulating plug 33 is made of insulating material. When the conductive plug 32 is inserted into the second groove 311a of the insulating aluminum groove 31, the conductive plug 32 can connect and conduct the electrode sheets on both sides thereof; when the insulating plug 33 is inserted into the second groove 311a of the insulating aluminum groove 31, the two electrode sheets on both sides of the insulating plug 33 are still in a state of not contacting each other.

[0098] According to a preferred embodiment, the conductive plug 32 includes a single-pin conductive plug and a double-pin conductive plug. Preferably, the single-pin conductive plug has a plug portion, such as Fig.17 As shown; the double-pin conductive plug has two plug parts, and the two plug parts are mutually conductive, such as Fig.18 As shown. When the single-pin conductive plug is inserted into the second groove 311a of the insulating aluminum groove 31, the single-pin conductive plug can connect and conduct the electrode sheets on both sides thereof. The two plug parts of the double-pin conductive plug are mutually conductive. When the double-pin conductive plug is inserted into the second groove 311a of the insulating aluminum groove 31, the double-pin conductive plug will connect and conduct the electrode sheets on both sides thereof, while the electrode sheet directly below the double-pin conductive plug is isolated and disconnected, so that it is not connected and conducted with the two electrode sheets adjacent to it on the left and right.

[0099] According to a preferred embodiment, the inserting portion of the conductive insert 32 and the insulating insert 33 is located on one side of the end cover, and when the conductive insert 32 and the insulating insert 33 are inserted between two adjacent electrode sheets, the inserting portion is located in the second groove 311a of the insulating aluminum groove 31; the side where the end cover is connected to the inserting portion is a fourth groove with high sides and low center, and the width of the fourth groove is not less than the width between the two side surfaces of the insulating aluminum groove 31, so that the fourth groove is used to accommodate the portion between two adjacent third grooves 312 on the insulating aluminum groove 31. Figures 16 to 19 As shown. In the preferred technical solution of this embodiment, the side where the end cover part is connected to the plug part is a fourth groove with high sides and low center, and the width of the fourth groove is not less than the width between the two side surfaces of the insulating aluminum groove 31. When the plug parts of the conductive plug 32 and the insulating plug 33 are inserted into the second groove 311a of the insulating aluminum groove 31, the fourth groove of the end cover can be just engaged with the part between the two adjacent third grooves 312 on the insulating aluminum groove 31, ensuring that the second groove 311a of the insulating aluminum groove 31 is covered, thereby achieving good sealing.

[0100] According to a preferred embodiment, more first ceramic sheets 38 are attached to the first electrode sheet 34 so that the power of the PTC electric heater has sufficient margin, and the amount of heat generated by the first ceramic sheets 38 is adjusted by inserting different numbers of single-pin conductive plugs, double-pin conductive plugs and insulating plugs 33 into the second groove 311a of the insulating aluminum groove 31, thereby changing the heating amount and power of the PTC electric heater.

[0101] Example 5

[0102] This embodiment describes the heating device of the present invention in detail.

[0103] The heating device of this embodiment has a heating element, and the heating element is a PTC electric heater of any one of the technical solutions in Embodiments 1 to 4. Preferably, the heating device is an air conditioner or a heater. It is known that the heating device includes not only the heating element but also other structures in the prior art such as a housing, which will not be described in detail here.

[0104] The heating device of this embodiment has a PTC electric heater of any one of the technical solutions in Embodiments 1 to 4, so that the heating device of this embodiment can adjust the heating capacity of the PTC electric heater, reduce the error between the heating capacity of the PTC electric heater and the heating capacity required by the heating device, improve the matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device, and also has the advantages of no restrictions on installation space and low cost. That is, the heating device of this embodiment solves the technical problem of low matching success rate of the heating capacity of the PTC electric heater and the heating capacity required by the heating device developed in the prior art.

[0105] Example 6

[0106] This embodiment describes in detail the method for adjusting the heating amount of the PTC electric heater of the present invention.

[0107] The method for adjusting the heating amount of a PTC electric heater of this embodiment is a PTC electric heater of any one of the technical solutions in Embodiments 1 to 4. Preferably, the method for adjusting the heating amount of a PTC electric heater includes the following manner: adjusting the installation angle of the electric heating mechanism by a ratchet assembly on the support mechanism to adjust the oncoming wind speed of the electric heating mechanism.

[0108] The method for adjusting the heating amount of the PTC electric heater of any one of the technical solutions in Examples 1 to 4 adjusts the installation angle of the electric heating mechanism by adjusting the installation angle of the electric heating mechanism through the ratchet assembly on the support mechanism to adjust the wind speed facing the electric heating mechanism, thereby adjusting the heating amount of the PTC electric heater, reducing the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, and improving the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device, and also has the advantages of no restrictions on installation space and low cost. That is, the method for adjusting the heating amount of the PTC electric heater in this embodiment solves the technical problem of the low matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device developed in the prior art.

[0109] According to a preferred embodiment, the method for adjusting the heating amount of the PTC electric heater also includes the following method: adjusting the heat dissipation area of ​​the electric heating mechanism by increasing or decreasing the number of heat sinks in the heat sink assembly. The adjustment method of the preferred technical solution of this embodiment adjusts the heat dissipation area of ​​the electric heating mechanism by increasing or decreasing the number of heat sinks in the heat sink assembly, thereby adjusting the heating amount of the PTC electric heater, further reducing the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, and improving the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device.

[0110] According to a preferred embodiment, the method for adjusting the heating amount of the PTC electric heater also includes the following method: adjusting the power of the heating of the ceramic sheet by increasing or decreasing the number of the conductive plugs 32 and the insulating plugs 33. The adjustment method of the preferred technical solution of this embodiment adjusts the power of the heating of the ceramic sheet by increasing or decreasing the number of the conductive plugs 32 and the insulating plugs 33, thereby adjusting the power of the PTC electric heater, so that the PTC electric heater of the preferred technical solution of this embodiment can be applied to occasions where customers have strict power requirements; on the other hand, by increasing or decreasing the number of the conductive plugs 32 and the insulating plugs 33 to adjust the power of the heating of the ceramic sheet, and then adjusting the power of the PTC electric heater, the heating amount of the PTC electric heater is also adjusted, which can further reduce the error between the heating amount of the PTC electric heater and the heating amount required by the heating device, and improve the matching success rate of the heating amount of the PTC electric heater and the heating amount required by the heating device.

[0111] It should be noted that when the heating amount of the PTC heater needs to be adjusted, one or more of the above three adjustment methods can be selected for adjustment.

[0112] According to a preferred embodiment, when the heating capacity of the developed PTC electric heater is lower than the heating capacity required by the heating device, the heating capacity of the PTC electric heater is increased by increasing the number of second heat sinks 22 on the side of the first heat sink 21, thereby increasing the heat dissipation area of ​​the electric heating mechanism, thereby adjusting the heating capacity of the PTC electric heater. 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 second heat sinks 22, the installation angle of the electric heating mechanism can be adjusted by the ratchet assembly on the support mechanism to reduce or increase the oncoming wind speed of the electric heating mechanism, thereby matching the heating capacity of the PTC electric heater with the heating capacity required by the heating device. Alternatively, the installation angle of the electric heating mechanism can be adjusted only by the ratchet assembly on the support mechanism to increase the oncoming wind speed of the electric heating mechanism, thereby matching the heating capacity of the PTC electric heater with the heating capacity required by the heating device.

[0113] 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 can be reduced by the following method: the installation angle of the electric heating mechanism is adjusted by the ratchet assembly on the support mechanism to reduce the oncoming wind speed of the electric heating mechanism, so that the heating capacity of the PTC electric heater matches the heating capacity required by the heating device. Alternatively, the number of the second heat sink 22 is reduced to reduce the heat dissipation area of ​​the electric heating mechanism, thereby reducing the heating capacity of the PTC electric heater. If the heating capacity of the PTC electric heater is slightly higher or lower than the heating capacity required by the heating device after reducing the number of the second heat sink 22, the installation angle of the electric heating mechanism can also be adjusted by the ratchet assembly on the support mechanism to reduce or increase the oncoming wind speed of the electric heating mechanism, so that the heating capacity of the PTC electric heater matches the heating capacity required by the heating device.

[0114] According to a preferred embodiment, when the heating amount or power of the developed PTC electric heater is lower than the heating amount or power required by the heating device, the heating amount or power of the PTC electric heater is increased by the following method: the insulating plug 33 inserted into the second groove 311a of the insulating aluminum groove 31 is replaced with a single-pin conductive plug, and the third electrode sheets 36 located on both sides of the single-pin conductive plug are connected, so that the first ceramic sheet 38 in contact with the third electrode sheet 36 can do work and generate heat, thereby increasing the amount of heat generated by the first ceramic sheet 38, and then the heating amount and power of the PTC electric heater can be increased.

[0115] According to a preferred embodiment, when the heating amount or power of the developed PTC electric heater is lower than the heating amount or power required by the heating device, the heating amount or power of the PTC electric heater can also be increased by the following method: the double-pin conductive plug inserted into the second groove 311a of the insulating aluminum groove 31 is replaced with two single-pin conductive plugs, so that the third electrode sheet 36 located directly below the double-pin conductive plug can be connected to the third electrode sheets 36 on both sides, so that the first ceramic sheet 38 in contact with the third electrode sheet 36 can work and generate heat, thereby increasing the heating amount and power of the PTC electric heater.

[0116] If the heating amount of the PTC electric heater is slightly higher or lower than the heating amount required by the heating device after increasing the amount of heat generated by the first ceramic sheet 38, the installation angle of the electric heating mechanism can be adjusted by the ratchet assembly on the support mechanism to reduce or increase the oncoming wind speed of the electric heating mechanism, thereby matching the heating amount of the PTC electric heater with the heating amount required by the heating device.

[0117] On the contrary, when the heating amount or power of the developed PTC electric heater is higher than the heating amount or power required by the heating device, the heating amount or power of the PTC electric heater can be reduced by the following method: the single-pin conductive plug inserted into the second groove 311a of the insulating aluminum groove 31 is replaced with an insulating plug 33, so that the third electrode sheets 36 located on both sides of the insulating plug 33 are disconnected, so that the first ceramic sheet 38 in contact with the third electrode sheet 36 does not work, thereby reducing the amount of heat generated by the first ceramic sheet 38, thereby reducing the heating amount and power of the PTC electric heater. Preferably, the single-pin conductive plug in the second groove 311a at the end of the insulating aluminum groove 31 is replaced with an insulating plug 33, so that the third electrode sheet 36 at the end is disconnected from the previous third electrode sheet 36, so that the first ceramic sheet 38 at the end does not work, thereby reducing the heating amount and power of the PTC electric heater.

[0118] On the contrary, when the heating amount or power of the developed PTC electric heater is higher than the heating amount or power required by the heating device, the heating amount or power of the PTC electric heater can also be reduced by the following method: the two consecutive single-pin conductive plugs inserted into the second groove 311a of the insulating aluminum groove 31 are replaced with double-pin conductive plugs, so that the third electrode sheet 36 located directly below the double-pin conductive plug can be disconnected from the third electrode sheets 36 on both sides, so that the first ceramic sheet 38 in contact with the third electrode sheet 36 does not do work, thereby reducing the heating amount and power of the PTC electric heater.

[0119] If the heating amount of the PTC electric heater is slightly higher or lower than the heating amount required by the heating device after reducing the amount of heat generated by the first ceramic sheet 38, the installation angle of the electric heating mechanism can be adjusted by the ratchet assembly on the support mechanism to reduce or increase the oncoming wind speed of the electric heating mechanism, thereby matching the heating amount of the PTC electric heater with the heating amount required by the heating device.

[0120] The method for adjusting the heating amount of the PTC electric heater of this embodiment can adjust the installation angle of the electric heating mechanism by adjusting the ratchet assembly on the support mechanism to adjust the wind speed of the electric heating mechanism, thereby adjusting the heating amount of the PTC electric heater; the heat dissipation area of ​​the electric heating mechanism can be adjusted by increasing or decreasing the number of the second heat sink 22, thereby adjusting the heating amount of the PTC electric heater; the power of the ceramic sheet heating can also be adjusted by changing the number of the single-pin conductive plug, the double-pin conductive plug and the insulating plug 33 inserted into the second groove 311a of the insulating aluminum groove 31, thereby adjusting the heating amount and power of the PTC electric heater. Compared with a single adjustment method, the method for adjusting the heating amount of the PTC electric heater of this embodiment can reduce the error between the heating amount of the PTC electric heater and the heating amount required by the heating device to a minimum through the synergistic effect of multiple methods, and the various adjustment methods complement each other, thereby greatly improving practicality.

[0121] In the description of the present invention, it should be noted that, unless otherwise specified, "multiple" means two or more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0122] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0123] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A PTC electric heater, characterized in that: The invention comprises a support mechanism and an electric heating mechanism, wherein the electric heating mechanism comprises a heat sink assembly and a heating assembly, and the heat sink assembly is installed on both sides of the heating assembly; the support mechanism is arranged at both ends of the electric heating mechanism and is rotatably connected to the electric heating mechanism, and a ratchet assembly is arranged on the support mechanism, and the ratchet assembly is used to adjust the installation angle of the electric heating mechanism to adjust the oncoming wind speed of the electric heating mechanism; The heating component comprises an insulating aluminum groove (31), a heating element and a plug-in element, wherein the heating element is placed in the insulating aluminum groove (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 plug-in element comprises a conductive plug-in (32) and an insulating plug-in (33), wherein the conductive plug-in (32) and the insulating plug-in (33) are plugged between two adjacent electrode sheets and in contact with the electrode sheets on both sides, and the heating component can adjust the heating power of the ceramic sheet by increasing or decreasing the number of the conductive plug-in (32) and the insulating plug-in (33).

2. The PTC electric heater according to claim 1, characterized in that: The heat sink assembly includes a plurality of heat sinks, and the plurality of heat sinks can be nested and connected, and the heat dissipation area of ​​the electric heating mechanism can be adjusted by increasing or decreasing the number of the heat sinks.

3. The PTC electric heater according to claim 1, characterized in that: The support mechanism comprises a first support mechanism and a second support mechanism, wherein the first support mechanism and the second support mechanism are rotatably connected to two ends of the electric heating mechanism respectively, and the ratchet assembly is arranged on the second support mechanism.

4. The PTC electric heater according to claim 3, characterized in that: The first support 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 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.

5. The PTC electric heater according to claim 3, characterized in that: The second support mechanism comprises a second shaft seat (13) and a second end shaft (14); the second shaft seat (13) is provided with a second mounting hole (131) and a third mounting hole (132); the second end shaft (14) has 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 to mount and fix the electric heating mechanism; and The ratchet assembly comprises a ratchet (151) and an adjusting member, wherein the ratchet (151) is arranged on the third mounting portion (141), and the adjusting member is installed in the third mounting hole (132) and is used for engaging with the teeth on the ratchet (151).

6. The PTC electric heater according to claim 5, characterized in that: The second mounting hole (131) is a stepped hole, the third mounting portion (141) is mounted in a hole with a smaller hole diameter of the second mounting hole (131), the ratchet (151) is mounted in a hole with a larger hole diameter of the second mounting hole (131), and the hole with the larger hole diameter is larger than the outer diameter of the ratchet (151); The adjusting member comprises a spring (152), a latch (153), a nut bracket (154) and a bolt (155), wherein the spring (152) is sleeved on the latch (153). The third mounting hole (132) is aligned with the larger hole diameter of the second mounting hole (131); the third mounting hole (132) is a stepped hole; the larger hole diameter of the third mounting hole (132) is composed of a cylindrical hole and a rectangular hole; the spring (152) and the cylindrical part of the latch (153) are installed in the cylindrical hole; the square boss of the latch (153) is installed in the rectangular hole; the smaller hole diameter of the third mounting hole (132) is used to install the latch portion of the latch (153); The nut bracket (154) is fixed on the second shaft seat (13), and a fourth mounting hole is provided on the nut bracket (154). The bolt (155) is installed in the fourth mounting hole and abuts against the end surface of the latch pin (153) so that the latch pin portion of the latch pin (153) is engaged with the tooth position on the ratchet (151).

7. The PTC electric heater according to claim 2, characterized in that: The heat sink assembly comprises a first heat sink (21) and a second heat sink (22), the number of the second heat sink (22) is plural, the first heat sink (21) and two sides of the heating assembly are bonded to each other, the second heat sink (22) and the first heat sink (21) are bonded to each other, and The fitting contact surfaces where the first heat sink (21) and the second heat sink (22) fit together and the fitting contact surfaces on both sides of the second heat sink (22) are provided with a nestable structure, and the first heat sink (21) and the second heat sink (22) are mutually nested and connected via the nestable structure, and two adjacent second heat sinks (22) are mutually nested and connected via the nestable structure.

8. The PTC electric heater according to claim 7, characterized in that: The nestable structure comprises a boss (23) and a first groove (24), wherein 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 abutting contact surface where the first heat sink (21) and the second heat sink (22) are abutted; the first groove (24) is arranged on the abutting contact surface on one side of the second heat sink (22), and the boss (23) is arranged on the abutting contact surface on the other side of the second heat sink (22); Two adjacent second heat sinks (22) are connected to each other by being nested with each other via the boss (23) and the first groove (24); and the first heat sink (21) and the second heat sink (22) are connected to each other by being nested with each other via the boss (23) and the first groove (24).

9. The PTC electric heater according to claim 1 or 2, characterized in that: The inner wall of the insulating aluminum groove (31) is provided with a heat-conducting insulating adhesive layer (311), and the heat-conducting insulating adhesive layer (311) located 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 to accommodate the plug-in parts of the conductive plug-in (32) and the insulating plug-in (33) and to make the plug-in parts of the conductive plug-in (32) and the insulating plug-in (33) contact with two adjacent electrode sheets.

10. The PTC electric heater according to claim 9, characterized in that: The ends of the two side surfaces of the insulating aluminum groove (31) are provided with third grooves (312) at intervals, the third grooves (312) on the ends of the two side surfaces are aligned with each other, and the third groove (312) on one end of the second groove (311a) provided on the insulating aluminum groove (31) is located on both sides of the second groove (311a), and the third groove (312) is used to accommodate the end covers of the conductive plug (32) and the insulating plug (33) and to seal the end covers of the conductive plug (32) and the insulating plug (33) with the insulating aluminum groove (31).

11. The PTC electric heater according to claim 1 or 2, characterized in that: 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) is equal 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 spaced and attached to the other side of the ceramic sheet, and the second electrode sheet (35) and the fourth electrode sheet (37) are located at two 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). 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), the length of the third electrode sheet (36) is less than the length of each of the ceramic sheets and the third electrode sheet (36) is located in the middle of the ceramic sheets, The conductive plug (32) or the insulating plug (33) is plugged between two adjacent second electrode sheets (35) and the third electrode sheet (36), between two adjacent third electrode sheets (36), and between two adjacent third electrode sheets (36) and the fourth electrode sheet (37).

12. The PTC electric heater according to claim 1 or 2, characterized in that: The ceramic sheet comprises a first ceramic sheet (38) and a second ceramic sheet (39), wherein the number of the first ceramic sheets (38) is multiple and the first ceramic sheet (38) is a power ceramic sheet, the number of the second ceramic sheets (39) is two and the second ceramic sheets (39) are zero-power ceramic sheets, and the second ceramic sheets (39) are attached to both ends of the first electrode sheet (34), and the multiple first ceramic sheets (38) are continuously attached to the first electrode sheet (34) side by side and are located between two second ceramic sheets (39).

13. The PTC electric heater according to claim 1 or 2, characterized in that: The conductive plug (32) and the insulating plug (33) both have a plug portion and an end cover portion, wherein the end covers of the conductive plug (32) and the insulating plug (33) are both made of insulating material; the plug portion of the conductive plug (32) is made of conductive material; and the plug portion of the insulating plug (33) is made of insulating material.

14. The PTC electric heater according to claim 13, characterized in that: The conductive plug (32) comprises a single-pin conductive plug and a double-pin conductive plug, wherein the single-pin conductive plug has one plug portion; the double-pin conductive plug has two plug portions, and the two plug portions are electrically connected to each other.

15. The PTC electric heater according to claim 13, characterized in that: The inserting piece parts of the conductive inserting piece (32) and the insulating inserting piece (33) are located on one side of the end cover part. When the conductive inserting piece (32) and the insulating inserting piece (33) are inserted between two adjacent electrode pieces, The inserting piece is located in the second groove (311a) of the insulating aluminum groove (31); The side where the end cover portion is connected to the insert portion is a fourth groove that is high on all sides and low in the middle, and the width of the fourth groove is not less than the width between the two side surfaces of the insulating aluminum groove (31), so that the fourth groove is used to accommodate the portion between two adjacent third grooves (312) on the insulating aluminum groove (31).

16. A heating device, characterized in that: A heating element is provided, and the heating element is the PTC electric heater according to any one of claims 1 to 15.

17. A method for adjusting the heating capacity of a PTC electric heater according to any one of claims 1 to 15, characterized in that: The method includes the following: adjusting the installation angle of the electric heating mechanism by means of a ratchet assembly on the support mechanism to adjust the oncoming wind speed of the electric heating mechanism.

18. The adjustment method according to claim 17, characterized in that: The method also includes the following: adjusting the heat dissipation area of ​​the electric heating mechanism by increasing or decreasing the number of heat sinks in the heat sink assembly.

19. The adjustment method according to claim 17 or 18, characterized in that: The invention also includes the following method: the power of heating of the ceramic sheet is adjusted by increasing or decreasing the number of the conductive plug-ins (32) and the insulating plug-ins (33).

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