PTC heating shell integrated structure

Abstract

This utility model discloses an integrated structure for a PTC heating housing, including a main housing, a heat dissipation unit, and a control box. The main housing has an internal cavity for accommodating the PTC heating element; the heat dissipation unit is located on the outer wall of the main housing and is integrally formed with it through die casting, serving to dissipate heat from the PTC heating element; the control box is connected to the bottom of the main housing and is integrally formed with it through die casting, and has an internal space for arranging control components. This utility model, through integral die casting, improves installation stability and heat dissipation performance, while also increasing production efficiency and optimizing structural strength, meeting the requirements for high efficiency and high reliability in PTC heaters.

Description

Technical Field

[0001] This utility model relates to, but is not limited to, the field of PTC heating equipment technology, and in particular to an integrated structure for a PTC heating housing. Background Technology

[0002] PTC heaters are widely used in automotive air conditioning, home heating equipment, and other fields. Their housing structure, as a core component supporting the heating element, conducting heat, and protecting internal elements, directly affects the installation stability, heat dissipation efficiency, and overall service life of the heating element. Traditional PTC heater housings often adopt a split design, requiring the main housing, heat dissipation structure, and control box to be manufactured separately and assembled using bolts, clips, or welding. This design has the following drawbacks: Firstly, split assembly easily leads to loose installation of the heating element, which may cause poor contact or component wear due to vibration over long-term use. Secondly, assembly seams increase thermal resistance, affecting the heat conduction efficiency of the PTC heating element and leading to a decrease in heat dissipation performance. Furthermore, the multi-component assembly process is cumbersome, requiring additional manpower and equipment costs, resulting in low assembly efficiency and failing to meet the current manufacturing industry's demands for efficient and reliable PTC heater production. Utility Model Content

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims. This invention aims to at least solve one of the technical problems existing in the prior art. To this end, embodiments of this invention provide an integrated PTC heating housing structure, which, through die-casting, improves installation stability and heat dissipation performance, while also increasing production efficiency and optimizing structural strength, thus meeting the requirements for high efficiency and high reliability of PTC heaters.

[0004] This utility model embodiment provides an integrated PTC heating housing structure, including a main housing, a heat dissipation section, and a control box; the main housing has an internal cavity for accommodating the PTC heating component; the heat dissipation section is distributed on the outer wall of the main housing and is integrally formed with the main housing by die casting, and the heat dissipation section is used to dissipate heat for the PTC heating component; the surface of the control box is connected to the bottom of the main housing and is integrally formed with the bottom of the main housing by die casting, and the control box has an internal installation space for arranging control components.

[0005] According to some embodiments of the present invention, the main body shell is provided with a connecting structure integrally formed with the main body shell by die casting. One end of the connecting structure is provided with an outwardly extending positioning protrusion. The positioning protrusion is used to assist in its own assembly positioning and / or docking with external components.

[0006] According to some embodiments of the present invention, a wire-passing hole is provided at the connection point between the connecting structure and the main housing, and the wire-passing hole is used to pass through the connecting wire of the PTC heating assembly.

[0007] According to some embodiments of this utility model, a wire guard is provided inside the wire passage hole, and the wire guard is interference-fitted with the wire passage hole to protect the connecting wire of the PTC heating component.

[0008] According to some embodiments of the present invention, a connecting groove is provided at the connection between the surface of the control box and the bottom of the main housing, and the connecting groove provides a channel for the electrical wiring between the PTC heating component and the control component.

[0009] According to some embodiments of the present invention, the bottom of the control box is provided with a fixing structure adapted to external components.

[0010] According to some embodiments of the present invention, the installation space of the control box is provided with multiple reinforcing ribs, which are integrally formed with the control box by die casting to enhance the structural strength of the control box. The multiple reinforcing ribs form a partition area for wiring or installing control components.

[0011] According to some embodiments of the present invention, the heat dissipation part is in the form of continuous fins and extends along the height direction of the main body shell.

[0012] According to some embodiments of the present invention, the inner wall of the main body shell is provided with a connecting column, which is used to fix the core component of the PTC heating assembly.

[0013] According to some embodiments of the present invention, the control box is provided with a sealing groove communicating with the installation space, and a sealing element is provided in the sealing groove.

[0014] The embodiments of this utility model have at least the following beneficial effects: 1. The main housing, heat dissipation unit and control box are integrally formed by die casting, which makes the dimensional accuracy of the housing cavity of PTC heating component and the installation space of control components higher. This can effectively avoid the heating component from loosening or poor contact due to vibration, and extend the service life of the equipment.

[0015] 2. The heat dissipation unit is integrally molded with the main body shell without assembly seams, which reduces thermal resistance and allows the heat generated by the PTC heating element to be directly and quickly conducted to the heat dissipation unit through the main body shell, improving heat dissipation efficiency and avoiding performance degradation caused by local overheating.

[0016] 3. The integrated die-casting process eliminates the need for separate processing, transportation, and assembly of individual components, reduces the use of bolts, clips, and other connecting parts, simplifies the production process, reduces labor and material costs, and improves production efficiency.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0019] Figure 1 This is a schematic diagram of the integrated structure of the PTC heating housing provided in this embodiment of the utility model; Figure 2 This is a rear view of the integrated PTC heating housing structure provided in this embodiment of the utility model; Figure 3 This is a front view of the integrated PTC heating housing structure provided in this embodiment of the utility model; Figure 4 This is a top view of the integrated PTC heating housing structure provided in this embodiment of the utility model; Reference numerals: Main body shell 110; heat dissipation part 120; control box 130; connecting structure 210; positioning protrusion 220; wire hole 310; receiving cavity 320; connecting post 330; connecting groove 410; fixing structure 420; reinforcing rib 430; sealing groove 440. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0025] See Figure 1 , Figure 1 This is a schematic diagram of the integrated PTC heating housing structure provided in this embodiment of the utility model. The integrated PTC heating housing structure includes a main housing 110, a heat dissipation section 120, and a control box 130. The main housing 110 has an internal cavity 320 for accommodating PTC heating components (such as PTC heating elements, insulating supports, etc.), providing installation space for the heating components. The heat dissipation section 120, mainly used for dissipating heat from the PTC heating components, is distributed on the outer wall of the main housing 110 and is integrally formed with the main housing 110 using a die-casting process. The surface of the control box 130 is connected to the bottom of the main housing 110, and it is also integrally formed with the main housing 110 using a die-casting process. The interior of the control box 130 forms an installation space for arranging control components (such as temperature control circuit boards, relays, etc.).

[0026] In one feasible embodiment, such as Figure 2 As shown, the main body shell 110 is die-cast with an integrated connecting structure 210. One end of the connecting structure 210 is provided with an outwardly extending positioning protrusion 220. These positioning protrusions 220 can not only assist in the precise positioning of the shell during the production and assembly stage, but also dock with external equipment (such as vehicle air conditioning bracket) in practical applications to achieve rapid installation.

[0027] In one feasible embodiment, such as Figure 3 As shown, a wire-passing hole 310 is provided at the connection point between the connecting structure 210 and the main housing 110. These wire-passing holes 310 can be used to pass through the connecting wires of the PTC heating component. Furthermore, a wire-protecting sleeve (such as a rubber ring) is installed inside the wire-passing hole 310. The wire-protecting sleeve and the wire-passing hole 310 are interference-fitted, which can effectively prevent the connecting wire (such as the connecting wire of the PTC heating component) from rubbing against the edge of the wire-passing hole 310, protect the insulation layer of the connecting wire, and improve electrical safety.

[0028] In one feasible embodiment, the main housing 110 has multiple receiving cavities 320 for accommodating the PTC heating element, and connecting posts 330 are symmetrically arranged on both sides of the inner wall of the main housing 110. During assembly, screws can be threaded through the mounting holes and connected to the connecting posts 330, or clips can be inserted into the slots of the connecting posts 330 to achieve a fastening, thereby firmly fixing the core components of the PTC heating element (such as temperature sensors) inside the main housing 110 and preventing the components from shifting due to vibration or other factors during the heating process.

[0029] In one feasible embodiment, the heat dissipation part 120 is in the form of continuous fins and extends along the height direction of the main body housing 110. This structure greatly increases the heat dissipation area, which can quickly dissipate the heat generated by the PTC heating component, improve heat dissipation efficiency, and ensure that the PTC heating component operates in a suitable temperature range.

[0030] In one feasible embodiment, such as Figure 4 As shown, a connecting groove 410 is provided at the connection between the surface of the control box 130 and the bottom of the main housing 110. These connecting grooves 410 provide a channel for the arrangement of electrical lines between the PTC heating component and the control component, so that the lines are neat and orderly.

[0031] In one feasible embodiment, the bottom of the control box 130 is designed with a fixing structure 420 that adapts to external components, so as to facilitate the fixing of the housing to the external device.

[0032] In one feasible embodiment, multiple reinforcing ribs 430 are die-cast within the installation space of the control box 130. These reinforcing ribs 430 are integrally formed with the control box 130, which not only enhances the structural strength of the control box 130 and resists external impacts and internal component installation stress, but also forms a partition area between the reinforcing ribs 430, which can be used for classified wiring or installation of different control components, thus optimizing the internal space layout.

[0033] In one feasible embodiment, the control box 130 is provided with a sealing groove 440 communicating with the installation space, and a sealing element (such as a rubber sealing ring) is configured in the groove, which can effectively prevent external moisture and dust from entering the interior of the control box 130 and ensure the stable operation of the control components.

[0034] In one feasible embodiment, a die-casting process can be employed, using a high-temperature resistant, high-strength aluminum alloy material (such as ADC12 die-cast aluminum). Die-casting molds are designed to correspond to the main housing 110, heat dissipation unit 120, control box 130, and various auxiliary structures (connecting columns 330, reinforcing ribs 430, etc.). The main housing 110, heat dissipation unit 120, and control box 130 are integrally formed using die-casting equipment in a single process. After die-casting, the wire passage hole 310, sealing groove 440, and other parts are precision machined to ensure dimensional accuracy. Subsequently, a wire protection sleeve is installed in the wire passage hole 310, and a sealing element (such as a rubber sealing ring) is assembled in the sealing groove 440, completing the housing preparation.

[0035] The following examples illustrate the application scenarios of the integrated PTC heating housing structure.

[0036] Example 1: Vehicle-mounted PTC heater scenario: In this scenario, the receiving cavity 320 of the main housing 110 can accommodate vehicle-mounted PTC heating components (such as ceramic PTC heating elements or thermally conductive aluminum plates). The connecting post 330 can fix the thermally conductive aluminum plate and heating element to the receiving cavity 320 with screws, ensuring stable heat conduction to the heat dissipation section 120. The continuous fin-like structure of the heat dissipation section 120, under the action of airflow in the vehicle's air duct, quickly dissipates the heat from the heating element into the vehicle interior, achieving vehicle heating. The control box 130 houses temperature control circuit boards, relays, and other control components. The connecting groove 410 provides an orderly arrangement channel for the electrical wiring of the circuit board and heating element, and the reinforcing rib 430 stabilizes the circuit board and resists vehicle vibration. The sealing groove 440, in conjunction with a rubber seal, prevents moisture and dust from the vehicle environment from entering the control box 130. The positioning protrusion 220 precisely aligns with the mounting bracket of the vehicle's air conditioning system, simplifying the assembly process. The wire sleeve protects the high-temperature wires inside the wire hole 310, improving reliability under vehicle operating conditions.

[0037] Example 2: Application scenarios of household appliance drying equipment: In home appliance drying equipment (such as heat pump dryers), the main housing 110 houses the PTC heating element (e.g., corrugated PTC heating element, insulating heat insulation component) in the cavity 320. The connecting column 330 fixes the heating element to prevent displacement of the heating element due to equipment vibration during drying. The heat dissipation part 120 has fins extending along the height direction of the main housing 110, which, in conjunction with the internal airflow of the drying equipment, accelerates heat transfer and improves drying efficiency. The control box 130 houses the drying control module (e.g., microcontroller, temperature sensor). The connecting slot 410 enables the electrical connection between the control module and the heating element, and the reinforcing rib 430 ensures the structural stability of the control module under frequent start-stop conditions. The sealing slot 440 prevents the intrusion of hot and humid air generated during drying into the control box 130. The fixing structure 420 adapts to the mounting position inside the dryer, the positioning protrusion 220 assists in the precise assembly of the housing and the dryer frame, and the wire sleeve protects the wires inside the wire hole 310.

[0038] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of the present utility model.

Claims

1. An integrated structure for a PTC heating housing, characterized in that, The device includes a main housing, a heat dissipation unit, and a control box. The main housing has an internal cavity for accommodating a PTC heating element. The heat dissipation unit is located on the outer wall of the main housing and is integrally formed with the main housing by die casting. The heat dissipation unit is used to dissipate heat from the PTC heating element. The surface of the control box is connected to the bottom of the main housing and is integrally formed with the bottom of the main housing by die casting. The control box has an internal space for arranging control components.

2. The integrated PTC heating housing structure according to claim 1, characterized in that, The main body shell is provided with a connection structure that is die-cast integral with the main body shell. One end of the connection structure is provided with an outwardly extending positioning protrusion. The positioning protrusion is used to assist in its own assembly positioning and / or docking with external components.

3. The integrated PTC heating housing structure according to claim 2, characterized in that, The connection structure is provided with a wire hole at the junction with the main body shell, and the wire hole is used to pass through the connection wire of the PTC heating assembly.

4. The integrated PTC heating housing structure according to claim 3, characterized in that, A wire guard is provided inside the wire passage hole. The wire guard is interference-fitted with the wire passage hole to protect the connection wire of the PTC heating component.

5. The integrated PTC heating housing structure according to claim 1, characterized in that, A connecting groove is provided at the connection between the surface of the control box and the bottom of the main housing, and the connecting groove provides a channel for the electrical wiring between the PTC heating component and the control component.

6. The integrated PTC heating housing structure according to claim 1, characterized in that, The bottom of the control box is equipped with a fixing structure that is compatible with external components.

7. The integrated PTC heating housing structure according to claim 1, characterized in that, The control box has multiple reinforcing ribs in its installation space. These ribs are integrally formed with the control box by die casting to enhance its structural strength. The multiple reinforcing ribs also form a partition area for wiring or installing control components.

8. The integrated PTC heating housing structure according to claim 1, characterized in that, The heat dissipation section is in the form of continuous fins and extends along the height direction of the main body shell.

9. The integrated PTC heating housing structure according to claim 1, characterized in that, The inner wall of the main housing is provided with connecting columns, which are used to fix the core components of the PTC heating assembly.

10. The integrated PTC heating housing structure according to claim 1, characterized in that, The control box is provided with a sealing groove that communicates with the installation space, and a sealing element is provided in the sealing groove.

Images