PTC heater shell and PTC heater
By setting up partitions and sealing connection structures in the PTC heater housing, problems such as short circuits caused by condensate water flowing into the front cabin of the car are solved, and the waterproof effect and life of the heater are achieved.
Patent Information
- Application Number
- CN202421568357.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-07-04
AI Technical Summary
During use of existing PTC heaters, condensate water can easily flow into the front cabin of the car, resulting in short circuits, leakage and even electric shock accidents.
A PTC heater housing is designed, and the installation groove and wiring groove are separated by a partition at the bottom of the storage groove, and a sealed connection structure and permeable hole design are adopted to achieve a thorough isolation and sealing of the heating core from the wiring part to prevent condensate from entering the wiring groove.
It effectively avoids condensate water entering the wiring duct and prevents short circuits, improves the reliability and service life of the PTC heater, and meets the waterproofing needs of the air conditioning system of new energy vehicles.
Smart Images
Figure CN223067204U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automotive air conditioners, in particular to a PTC heater housing and a PTC heater. Background Art
[0002] With the development of the new energy vehicle industry, consumers have higher and higher requirements for the temperature comfort inside the vehicle. As one of the important high-voltage components in the new energy vehicle air conditioning system, the PTC heater needs to adapt to various types of environments and vehicle use scenarios, and has higher requirements for the reliability of the PTC itself. In existing PTC heater vehicles, when using the air conditioner in summer, condensation water will be generated when cold air passes through the PTC fins and accumulates inside the PTC housing. If the installation connection point of the PTC heater is located in the front compartment of the vehicle, the condensation water will flow into the front compartment of the vehicle along the gap inside the PTC housing. If the wiring harness in the front compartment comes into contact with moisture, it is easy to cause short circuits, electric leakage, and even electric shock accidents. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose a PTC heater housing and a PTC heater, aiming to solve the problem that the condensation water generated inside the housing of the existing PTC heater is easy to flow into the front compartment of the vehicle, causing short circuits, electric leakage, and even electric shock accidents.
[0004] To achieve the above object, a PTC heater housing proposed by the utility model includes a bottom shell and a cover body. The bottom shell is defined with a receiving groove. A partition is protruded from the bottom of the receiving groove to divide the receiving groove into an installation groove for installing a heating core and a wiring groove for accommodating wiring components. The cover body is detachably covered on the opening of the receiving groove. A sealing connection structure for sealing the wiring groove is provided between the partition and the cover body.
[0005] According to some embodiments of the utility model, the sealing connection structure includes a sealing groove and a sealing protrusion. Among the two opposite end faces of the cover body and the partition, one is provided with the sealing groove, and the other protrudes with the sealing protrusion. The sealing groove and the sealing protrusion are inserted and sealed in cooperation.
[0006] According to some embodiments of the utility model, a sealing filler is filled in the gap between the sealing groove and the sealing protrusion.
[0007] According to some embodiments of the utility model, a plurality of water-permeable holes communicating with the installation groove are provided on the bottom shell and / or the cover body.
[0008] According to some embodiments of the utility model, after the cover body is covered on the bottom shell, it forms a PTC heater housing with a square structure. The plurality of water-permeable holes are provided on each edge of the cover body and / or the bottom shell.
[0009] According to some embodiments of the present utility model, a through hole for a wiring component connected to a heating core body to pass through is provided on the partition plate. The through hole communicates the installation groove and the wiring groove, and a wire protection tube is provided on the through hole.
[0010] According to some embodiments of the present utility model, the gaps between the wire protection tube and the through hole and between the wiring component and the wire protection tube are filled with sealing fillers.
[0011] According to some embodiments of the present utility model, a clamping and positioning structure is further included, and the cover body is detachably connected to the bottom shell through the clamping and positioning structure.
[0012] According to some embodiments of the present utility model, positioning ribs for pressing the heating core body are convexly provided on the bottom of the installation groove and the surface of the cover body opposite thereto.
[0013] The present utility model further provides a PTC heater, which includes a heating core body, a wiring component and the above-mentioned PTC heater housing. The heating core body is installed in the installation groove, and the wiring component is accommodated in the wiring groove.
[0014] The present utility model has at least the following beneficial effects:
[0015] In the present utility model, a partition plate is convexly provided at the bottom of the accommodation groove to divide the accommodation groove into an installation groove for installing a heating core body and a wiring groove for accommodating a wiring component. Furthermore, the heating core body and the wiring part can be completely separated. Then, through the sealing connection structure, the wiring groove is completely sealed, achieving a sealing and waterproof effect on the wiring groove. It can prevent the condensed water generated in the installation groove from entering the wiring groove and then entering the front cabin through the gap between the housing and the front cabin of the vehicle, thus avoiding problems such as short circuits.
[0016] The manufacturing process of the PTC heater housing provided by the present utility model is simple, capable of realizing mass production, and meeting the waterproof requirements of the PTC heater for the new energy vehicle air conditioning system.
[0017] The present utility model further has the following beneficial effects:
[0018] The utility model is provided with a plurality of water permeable holes communicated with the installation groove on the bottom shell and / or the cover body. When installing the PTC heater, the shell surface provided with the water permeable holes can be arranged downward, so that the condensed water in the installation groove can be discharged from the water permeable holes by gravity. Moreover, the overall structure formed after the cover body is covered on the bottom shell is square, and the plurality of water permeable holes are arranged on each edge of the cover body and / or the bottom shell. Since the plurality of water permeable holes are arranged on the edges, the PTC heater can discharge the condensed water out of the shell through the water permeable holes by gravity at different installation angles. Thus, the heating core can be prevented from being soaked in the condensed water for a long time, and the service life can be improved accordingly. Description of the Drawings
[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0020] Figure 1 Structural schematic diagram of a PTC heater housing provided by an embodiment of the present utility model;
[0021] Figure 2 For Figure 1 Top view schematic diagram of the PTC heater housing (without the cover body) in
[0022] Figure 3 For Figure 1 Cross-sectional structural schematic diagram of the PTC heater housing in
[0023] Figure 4 For Figure 3 Local enlarged schematic diagram at position A in
[0024] Description of the reference numerals:
[0025] 100 - PTC heater housing; 1 - bottom shell; 11 - receiving groove; 111 - installation groove; 112 - wiring groove; 1121 - isolation part; 1122 - potting groove; 1123 - wire harness groove; 12 - partition; 2 - cover body; 3 - sealing connection structure; 31 - sealing convex part; 32 - sealing groove; 4 - water permeable hole; 5 - cable protection tube; 6 - clamping and positioning structure; 7 - heating core; 8 - wiring component; 200 - PTC heater. Detailed Embodiment
[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0027] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.
[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.
[0029] The present invention provides a PTC heater housing and a PTC heater. Figures 1-4 This is a specific embodiment of a PTC heater housing provided by the present invention.
[0030] As Figures 1-4 , an embodiment of the present invention provides a PTC heater housing 100, including a bottom case 1 and a cover body 2. The bottom case 1 is defined with a receiving groove 11. A partition 12 protrudes from the bottom of the receiving groove 11 to divide the receiving groove 11 into an installation groove 111 for installing a heating core 7 and a wiring groove 112 for accommodating a wiring component 8. The cover body 2 is detachably covered on the opening of the receiving groove 11. A sealing connection structure 3 for sealing the wiring groove 112 is provided between the partition 12 and the cover body 2.
[0031] In the present utility model, a partition 12 protrudes from the bottom of the accommodating groove 11 to divide the accommodating groove 11 into an installation groove 111 for installing the heating core 7 and a wiring groove 112 for accommodating the wiring component 8. Thus, the heating core 7 can be completely separated from the wiring part. Then, through the sealing connection structure 3, the wiring groove 112 is completely sealed, achieving the sealing and waterproof effect of the wiring groove 112, and it can prevent the condensed water generated in the installation groove 111 from entering the wiring groove 112 and then entering the front cabin through the gap between the housing and the front cabin of the vehicle, causing problems such as short circuits. Moreover, the manufacturing process of the PTC heater housing 100 provided by the present utility model is simple, enabling mass production and meeting the waterproof requirements of the PTC heater for new energy vehicle air conditioning systems.
[0032] Specifically, in some embodiments, please refer to Figure 3 , the sealing connection structure 3 includes a sealing groove 32 and a sealing protrusion 31. Among the two opposite end faces of the cover body 2 and the partition 12, one is provided with the sealing groove 32, and the other protrudes with the sealing protrusion 31. The sealing groove 32 and the sealing protrusion 31 are in plug-in sealing cooperation. In this way, when the cover body 2 is covered on the opening of the accommodating groove 11, the sealing protrusion 31 will be inserted into the sealing groove 32 along with the movement of the cover body 2 to achieve the sealing effect on the wiring groove 112. It can be understood that, in order to improve the sealing effect, the specific shapes of the sealing groove 32 and the sealing protrusion 31 are adapted to each other. Preferably, the sealing groove 32 extends along the extension direction of the partition 12 to improve the sealing effect.
[0033] Specifically, in some embodiments, a sealing filler is filled in the gap between the sealing groove 32 and the sealing protrusion 31. The sealing filler is preferably liquid silicone with excellent tear strength, resilience, anti-yellowing property, thermal stability, water resistance, air permeability, heat aging resistance and weather resistance. It can fill the gap, has strong adhesiveness after curing, and has good and reliable protection effect.
[0034] When the new energy vehicle air conditioning system is in use, when the cold air passes through the fins of the PTC heater 200, it is easy to generate condensed water and accumulate inside the housing of the PTC heater 200. If it accumulates for a long time, the entire heating core 7 will be soaked in the condensed water for a long time. Therefore, in some embodiments, a plurality of water permeable holes 4 communicating with the installation groove 111 are provided on the bottom shell 1 and / or the cover body 2. When installing the PTC heater 200, the shell surface provided with the water permeable holes 4 can be set facing downwards. In this way, the condensed water in the installation groove 111 can be discharged from the water permeable holes 4 by gravity. Further, after the cover body 2 is covered on the bottom shell 1, it forms a square PTC heater housing 100. The plurality of water permeable holes 4 are provided on each edge of the cover body 2 and / or the bottom shell 1. Since the plurality of water permeable holes 4 are provided on the edges, the PTC heater 200 can discharge the condensed water out of the housing through the water permeable holes 4 by gravity at different installation angles. In this way, it can be avoided that the heating core 7 is soaked in the condensed water for a long time, thereby improving the service life.
[0035] Specifically, in some embodiments, a through hole for the connection component 8 for connecting with the heating core 7 to pass through is provided on the partition plate 12. The through hole communicates the installation groove 111 and the wiring groove 112. A wire protection tube 5 is provided on the through hole. In this way, the connection component 8 can be connected with the heating core 7 accommodated through the wire protection tube 5 provided on the through hole. The wire protection tube 5 can provide good protection and guiding effects for the connection component 8.
[0036] Specifically, in order to further improve the sealing effect of the housing sealing structure, in some embodiments, the gaps between the wire protection tube 5 and the through hole and between the connection component 8 and the wire protection tube 5 are filled with a sealing filler. The sealing filler is preferably liquid silicone rubber, which can fill the gaps, has strong adhesiveness after curing, and has good and reliable protection effects.
[0037] Specifically, in order to quickly disassemble and assemble the cover body 2 and the bottom shell 1, in some embodiments, a snap-fitting and positioning structure 6 is further included. The cover body 2 is detachably connected to the bottom shell 1 through the snap-fitting and positioning structure 6. The operation of the snap-fitting and positioning structure 6 is simple and the disassembly and assembly are fast.
[0038] Furthermore, the engaging and positioning structure 6 includes a plurality of engaging groove portions provided on the cover body 2 and a plurality of engaging convex portions provided on the bottom shell 1 corresponding to the plurality of engaging groove portions one by one. The cover body 2 is detachably connected to the bottom shell 1 through the engagement and cooperation of the engaging groove portions and the engaging convex portions. In this way, the detachable connection between the cover body 2 and the bottom shell 1 can be realized through the clamping form of the engaging convex portions and the engaging groove portions. Moreover, the engaging convex portions and the bottom shell 1, as well as the engaging groove portions and the cover body 2, are integrally injection-molded. The production process is simple, the use of shell structural parts is reduced, and the cost is lowered.
[0039] Specifically, positioning ribs for pressing the heating core 7 are convexly provided on the bottom of the installation groove 111 and the surface of the cover body 2 opposite thereto. In this way, after the heating core 7 is installed in the installation groove 111 and then the cover body 2 is covered on the bottom shell 1, the heating core 7 can be pressed by the opposite positioning ribs, which can play a role in positioning and fixing the heating core 7.
[0040] Specifically, it should be noted that in the actual production process, the wiring component 8 is generally covered with an insulating waterproof layer on the outside. The wiring component 8 is generally connected to the electrode piece or electrode post on the heating core 7, and the motor piece or electrode post is exposed in the groove, which poses a safety hazard. Therefore, in some embodiments, a partition portion 1121 is convexly provided on the bottom of the wiring groove 112. The partition portion 1121 and a partial groove wall of the wiring groove 112 enclose a potting groove 1122 for accommodating the wiring component 8 connected to the heating core 7. The partition portion 1121 and the remaining groove wall of the wiring groove 112 form a wire harness groove 1123 for accommodating the remaining wiring component 8. In this way, potting compound can be poured into the potting groove 1122 to seal the part of the wiring component 8 connected to the heating core 7, and together with the sealing connection structure, it plays a dual role of waterproofing and insulation.
[0041] The present utility model also provides a PTC heater 200, which includes a heating core 7, a wiring component 8, and the above-mentioned PTC heater housing 100. The heating core 7 is installed in the installation groove 111, and the wiring component 8 is accommodated in the wiring groove 112. The accommodation groove 11 is separated into an installation groove 111 for installing the heating core 7 and a wiring groove 112 for accommodating the wiring component 8 by the partition 12. Furthermore, the heating core 7 and the wiring part can be completely separated. Then, the wiring groove 112 is completely sealed by the sealing connection structure 3, achieving the sealing and waterproof effect of the wiring groove 112, and being able to prevent the condensed water generated in the installation groove 111 from entering the wiring groove 112 and causing problems such as short circuits. Furthermore, the PTC heater 200 meets the waterproof requirements of the PTC heater for the new energy vehicle air conditioning system.
[0042] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A PTC heater housing, characterized in that, It includes a bottom shell and a cover body. The bottom shell is defined with a receiving groove. A partition is protruded from the bottom of the receiving groove to divide the receiving groove into a mounting groove for mounting a heating core and a wiring groove for accommodating a wiring component. The cover body is detachably covered on the opening of the receiving groove. A sealing connection structure for sealing the wiring groove is provided between the partition and the cover body.
2. The PTC heater housing according to claim 1, wherein The sealing connection structure includes a sealing groove and a sealing protrusion. Among the two opposite end faces of the cover body and the partition, one of them is provided with the sealing groove, and the other protrudes with the sealing protrusion. The sealing groove and the sealing protrusion are in plug-in sealing fit.
3. The PTC heater housing according to claim 2, wherein, A sealing filler is filled in the gap between the sealing groove and the sealing protrusion.
4. The PTC heater housing according to claim 1, characterized in that, A plurality of water-permeable holes communicating with the mounting groove are provided on the bottom shell and / or the cover body.
5. The PTC heater housing according to claim 4, wherein, After the cover body is covered on the bottom shell, it constitutes a PTC heater housing with a square structure. The plurality of water-permeable holes are provided on each edge of the cover body and / or the bottom shell.
6. The PTC heater housing according to claim 1, wherein A through hole for the wiring component connected to the heating core to pass through is provided on the partition. The through hole communicates the mounting groove and the wiring groove, and a wire protection tube is provided on the through hole.
7. The PTC heater housing according to claim 6, characterized in that, The gaps between the wire protection tube and the through hole and between the wiring component and the wire protection tube are both filled with a sealing filler.
8. The PTC heater housing according to claim 1, characterized in that, The cover body is detachably connected to the bottom shell through a snap-fit positioning structure.
9. The PTC heater housing according to claim 1, wherein Positioning ribs for pressing the heating core are protruded on the bottom of the mounting groove and the opposite surface of the cover body.
10. A PTC heater, characterized in that, It includes a heating core, a wiring component, and the PTC heater housing according to any one of claims 1-9. The heating core is installed in the mounting groove, and the wiring component is accommodated in the wiring groove.