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CN-224233859-U - Air heating PTC heater

CN224233859UCN 224233859 UCN224233859 UCN 224233859UCN-224233859-U

Abstract

The utility model discloses an air heating PTC heater. The heating device comprises a cover plate, a shell and a heating assembly with a plurality of heating cores, wherein the heating assembly is arranged in the shell, a plurality of protruding blocks are arranged in the shell at intervals side by side, the interior of the shell is divided into an upper wiring cavity and a lower heating cavity, a sealing ring is arranged on each heating core and is sealed and coated on the upper portion of the heating core, the heating assembly is fixed in the shell in a mode that the sealing ring is embedded into a protruding block gap, and the sealing ring and the protruding blocks form a sealing relationship, so that an electrode part of the heating core is positioned in the wiring cavity. The sealing gasket has the advantages that the traditional single sealing gasket is changed into a plurality of sealing rings, the sealing gasket is matched with sealant for sealing, the material size is reduced, the sealing process is optimized, the material cost and the reworking cost generated after glue leakage are greatly reduced, the production efficiency is improved, the sealing gasket is provided with glue grooves at the upper and lower sides, the contact area between the sealing gasket and the heating assembly is larger when the sealing gasket flows in, and the sealing performance is further enhanced.

Inventors

  • CAO JIALEI
  • XIE YAN
  • Ai yao

Assignees

  • 江苏华智新能源科技有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (7)

  1. 1. The air heating PTC heater is characterized by comprising a cover plate (1), a shell (2) and a heating assembly (3) which is arranged in the shell (2) and provided with a plurality of heating cores (11), wherein a plurality of protruding blocks (8) are arranged in the shell (2) at intervals side by side, the interior of the shell (2) is divided into a wiring cavity at the upper part and a heating cavity at the lower part, each heating core (11) is provided with a sealing ring (5), the sealing rings (5) are sealed and coated on the upper part of the heating core (11), the heating assembly (3) is fixed in the shell (2) in a mode that the sealing rings (5) are embedded into gaps of the protruding blocks (8), and sealing relations are formed between the sealing rings (5) and the protruding blocks (8) so that electrode parts of the heating cores (11) are positioned in the wiring cavity.
  2. 2. The air-heating PTC heater according to claim 1, wherein the wiring cavity is filled with sealant (4).
  3. 3. The air heating PTC heater according to claim 2 is characterized in that the sealing ring (5) is provided with a glue groove (6) for increasing the contact area between the sealing glue (4) and the heating component (3) up and down, the left side and the right side are provided with shell mounting grooves (7) so that the gap shapes of two adjacent shell mounting grooves (7) are matched with the protruding blocks (8), the sealing ring (5) and the protruding blocks (8) are provided with cover plate limiting grooves (9) which are communicated, and the cover plate (1) is provided with cover plate limiting ribs (10) which are matched with the cover plate limiting grooves (9).
  4. 4. The air heating PTC heater according to claim 1, wherein the heating assembly (3) comprises a plurality of heating cores (11) and radiating fins (12) which are alternately arranged side by side, electrode strips (13) are arranged in the heating cores (11), a sealing head (14) is arranged at the upper end of the heating cores, and two through holes for respectively extending out positive electrodes and negative electrodes of the electrode strips (13) are formed in the sealing head (14).
  5. 5. A wind-warm PTC heater according to claim 4, wherein the positive and negative electrodes of the plurality of electrode strips (13) are connected by a bus plate (15), respectively.
  6. 6. The air-heating PTC heater according to claim 4, wherein the heat radiating fin (12) is made of aluminum.
  7. 7. The air heating PTC heater according to any one of claims 1-6, wherein the cover plate (1) and the shell (2) are made of plastic, and the sealing ring (5) is made of silica gel.

Description

Air heating PTC heater Technical Field The utility model relates to a PTC heater, in particular to an air heating PTC heater. Background The existing air-heating PTC heater generally comprises PTC heating sheets, aluminum radiating strips, a controller, a plastic shell and other parts, the structure of the air-heating PTC heater needs to be subjected to sealing treatment, electric parts are completely sealed by heat-conducting silica gel, and the phenomenon that the condensation water generated by an evaporator flows onto the PTC heater to cause poor insulation is prevented, so that an automobile is in fault. The original product adopts a complete sealing ring for sealing, but the sealing process is complex, the problem of uneven sealing is easy to occur, the leakage risk exists, and the reworking cost after glue leakage is higher. Disclosure of Invention The utility model aims to solve the technical problem of providing the air heating PTC heater with good sealing performance and low cost. In order to solve the technical problems, the air heating PTC heater comprises a cover plate, a shell and a heating assembly provided with a plurality of heating cores and installed in the shell, wherein a plurality of protruding blocks are arranged in the shell at intervals in parallel to divide the interior of the shell into an upper wiring cavity and a lower heating cavity, a sealing ring is arranged on each heating core and is sealed and coated on the upper part of the heating core, the heating assembly is fixed in the shell in a mode that the sealing ring is embedded into a gap between the protruding blocks, and the sealing ring and the protruding blocks form a sealing relationship and enable an electrode part of the heating core to be located in the wiring cavity. And sealant is filled in the wiring cavity. The sealing ring is provided with a glue groove for increasing the contact area between the sealing glue and the heating component up and down, and a shell mounting groove is formed in the left and right sides, so that the gap shape of two adjacent shell mounting grooves is matched with the protruding block; the sealing ring and the protruding block are provided with a cover plate limiting groove which is communicated with each other, and the cover plate is provided with a cover plate limiting rib which is matched with the cover plate limiting groove in shape. The heating assembly comprises a plurality of heating cores and radiating fins which are alternately arranged side by side, an electrode strip is arranged inside the heating cores, an end enclosure is arranged at the upper end of the heating cores, and two through holes respectively used for the positive electrode and the negative electrode of the electrode strip to extend out are formed in the end enclosure. The positive electrodes and the negative electrodes of the electrode strips are respectively connected through the bus plates. The radiating fins are made of aluminum. The cover plate and the shell are made of plastic, and the sealing ring is made of silica gel. The utility model has the advantages that the traditional single-piece sealing gasket is changed into a plurality of sealing rings, the sealing is realized by matching with sealing glue, the material size is reduced, the sealing process is optimized, the material cost and the reworking cost generated after glue leakage are greatly reduced, the production efficiency is improved, and the sealing rings are provided with glue grooves up and down, so that the contact area between the sealing glue and the heating assembly is larger when the sealing glue flows in, and the sealing property is further enhanced. Drawings FIG. 1 is an exploded view of the present utility model; FIG. 2 is a perspective view of the present utility model with the cover plate removed; FIG. 3 is an enlarged view of a portion of FIG. 2; FIG. 4 is a perspective view of a seal ring of the present utility model; FIG. 5 is a perspective view of the present utility model with the cover plate removed and sealant applied; FIG. 6 is a perspective view of a cover plate of the present utility model; fig. 7 is an exploded view of the heating assembly of the present utility model. Detailed Description The air-warming PTC heater of the present utility model will be described in further detail with reference to the accompanying drawings and detailed description. As shown in the figure, the air-heating PTC heater of the present utility model comprises a cover plate 1 made of plastic, a housing 2, and a heating assembly 3 installed in the housing 2. The heating component 3 comprises a plurality of heating cores 11 and aluminum radiating fins 12 which are alternately arranged side by side, the heating cores 11 comprise aluminum pipes and electrode strips 13 which penetrate through the aluminum pipes from the inside and are coated with insulating films, sealing heads 14 are arranged at the upper ends of the aluminum pipes, two through holes are