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CN-224233857-U - High-resistance silicon nitride heating element

CN224233857UCN 224233857 UCN224233857 UCN 224233857UCN-224233857-U

Abstract

The utility model discloses a high-resistance silicon nitride heating element, which comprises a silicon nitride ceramic matrix, a heating tube and an electrode block, wherein the silicon nitride ceramic matrix comprises a lower matrix and an upper matrix, tube slots are formed in opposite sides of the lower matrix and the upper matrix, binding posts are arranged at two ends of the heating tube, the heating tube and the binding posts are arranged in the tube slots, and the binding posts are arranged at the end parts of the lower matrix and the upper matrix.

Inventors

  • NI WEIGUO
  • YU HONGLI
  • YANG XUEFENG

Assignees

  • 海宁托博特种陶瓷制品有限公司

Dates

Publication Date
20260512
Application Date
20250328

Claims (5)

  1. 1. The high-resistance silicon nitride heating element comprises a silicon nitride ceramic matrix (1), a heating tube (3) and an electrode block (5), and is characterized in that the silicon nitride ceramic matrix (1) comprises a lower matrix (101) and an upper matrix (102), tube slots (106) are formed in opposite sides of the lower matrix (101) and the upper matrix (102), binding posts (4) are arranged at two ends of the heating tube (3), the heating tube (3) and the binding posts (4) are arranged in the tube slots (106), the binding posts (4) are arranged at the end parts of the lower matrix (101) and the upper matrix (102), connecting pieces (2) are connected to two sides of the lower matrix (101) and the upper matrix (102) along the length direction, the connecting pieces (2) are used for connecting the lower matrix (101) and the upper matrix (102) in a closed mode, positioning structures are arranged between the lower matrix (101) and the upper matrix (102), mounting slots (501) are formed in one sides of the electrode block (5), and one ends of the lower matrix (101) and the upper matrix (102) are located in the mounting slots (9) through the connecting pieces of the electrode block (5); The connecting piece (2) comprises a rectangular frame strip (201), clamping grooves (103) are formed in two sides of the lower base body (101) and the upper base body (102), and the rectangular frame strip (201) is clamped in the clamping grooves (103) of the lower base body (101) and the upper base body (102); The positioning structure comprises a positioning groove (107) formed in one side of the lower base body (101) close to the upper base body (102), the positioning groove (107) is formed in one circle outside the pipe groove (106), one side of the upper base body (102) close to the lower base body (101) is fixedly connected with a positioning convex strip (108), the positioning convex strip (108) is formed in one circle outside the pipe groove (106), and when the lower base body (101) is in butt joint with the upper base body (102), the positioning convex strip (108) is clamped into the positioning groove (107) in a butt joint mode.
  2. 2. The high-resistance silicon nitride heating element of claim 1, wherein a through groove (104) communicated with the clamping groove (103) is formed in one side of the lower base body (101) and one side of the upper base body (102), an extension strip (202) penetrating through the through groove (104) is fixedly connected to one side of the rectangular frame strip (201), one end, far away from the rectangular frame strip (201), of the extension strip (202) extends to the outside of the lower base body (101) and the upper base body (102) and is fixedly connected with a fixing plate (203), and a second fixing hole (204) is formed in the fixing plate (203).
  3. 3. The high-resistance silicon nitride heating element according to claim 2, wherein the first fixing hole (105) is formed in one end of the lower base body (101) and the upper base body (102) which are arranged in the mounting groove (501), the accommodating groove (502) for accommodating the retaining plate (203) is formed in the inner wall of the mounting groove (501), through holes corresponding to the first fixing hole (105) and the second fixing hole (204) are formed in the side wall of the electrode block (5), the locking piece (9) comprises a connecting plate (901), a first inserting rod (902) penetrating through the through holes and the first fixing hole (105) in alignment and a second inserting rod (903) penetrating through the through holes and the second fixing hole (204) in alignment are fixedly connected to the connecting plate (901), and the connecting plate (901) and the electrode block (5) are fixedly connected through the fixing bolts (904).
  4. 4. The high-resistance silicon nitride heating element according to claim 1, wherein the cross sections of the positioning grooves (107) and the positioning convex strips (108) are triangular structures, and the widths of the positioning grooves (107) and the positioning convex strips (108) gradually decrease along the direction from the upper substrate (102) to the lower substrate (101).
  5. 5. The high-resistance silicon nitride heating element according to claim 1, wherein the elastic conductive column (6) corresponding to the position of the binding post (4) is embedded and installed on the inner wall of the installation groove (501), one end of the elastic conductive column (6) is arranged in the electrode block (5) and is electrically connected with the connecting terminal (7), and one end of the connecting terminal (7) is fixedly connected with the connecting wire (8) extending to the outside of the electrode block (5).

Description

High-resistance silicon nitride heating element Technical Field The utility model relates to the technical field of heating elements, in particular to a high-resistance silicon nitride heating element. Background The silicon nitride ceramic heating element has high heat efficiency, good electrical safety performance and quick temperature rise, so that the silicon nitride ceramic heating element is widely applied to the field of liquid heating and mainly comprises a silicon nitride matrix and a heating wire positioned in the silicon nitride matrix. Through retrieval, chinese patent publication No. CN218941355U discloses a hot-pressed silicon nitride ceramic electric heating element, which relates to the technical field of electric heating elements, in particular to a hot-pressed silicon nitride ceramic electric heating element, and comprises a ceramic matrix, wherein an electrode block is arranged at the end part of the ceramic matrix, a heating circuit is arranged in the ceramic matrix, two groups of connecting wires matched with the heating circuit are inlaid in the electrode block, and an insertion groove matched with the ceramic matrix is formed in the electrode block. According to the technical scheme, the ceramic substrate is divided into the upper part and the lower part, although the ceramic substrate and the heating tube are convenient to assemble and disassemble, a fixing structure is lacking between the ceramic substrates of the two parts, so that a large gap is easily formed between the ceramic substrates of the two parts, the heating tube cannot be fully contacted with the ceramic substrate, the heating effect is affected, dust, water vapor and the like easily enter the polluted and dyed heating tube from the gap, and therefore, a high-resistance silicon nitride heating element is needed to solve the problems. Disclosure of utility model Aiming at the defects of the prior art, the utility model aims to provide a high-resistance silicon nitride heating element, and aims to solve the problems that in the prior art, a fixed structure is lacking between two parts of ceramic matrixes of the high-resistance silicon nitride heating element, larger gaps are easy to exist between the two parts of ceramic matrixes, heating effect is influenced and heating pipe pollution is easy to cause. In order to achieve the above purpose, the present utility model provides the following technical solutions: The utility model provides a high resistance silicon nitride heating element, includes silicon nitride ceramic base member, heating tube and electrode block, silicon nitride ceramic base member includes base member and last base member down, the tube socket has all been seted up to the relative one side of base member and last base member down, the both ends of heating tube all are provided with the terminal, heating tube and terminal are arranged in the tube socket, the terminal is arranged in the tip of base member and last base member down, the both sides of base member and last base member along length direction all are connected with the connecting piece down, the connecting piece is used for with base member and last base member closed connection down, be provided with location structure down between base member and the last base member, the mounting groove has been seted up to electrode block one side, base member and last base member one end are pegged graft in the mounting groove of electrode block down to connect fixedly through the locking piece. Preferably, the connecting piece comprises a rectangular frame strip, clamping grooves are formed in two sides of the lower base body and the upper base body, and the rectangular frame strip is clamped in the clamping grooves of the lower base body and the upper base body. Preferably, a through groove communicated with the clamping groove is formed in one side of the lower base body and one side of the upper base body, an extension bar penetrating through the through groove is fixedly connected to one side of the rectangular frame bar, one end, far away from the rectangular frame bar, of the extension bar extends to the outer parts of the lower base body and the upper base body and is fixedly connected with a fixing plate, and a second fixing hole is formed in the fixing plate. Preferably, the first fixed orifices have been seted up to the inside one end of mounting groove is arranged in to lower base member and last base member, set up the holding tank that is used for holding the retainer plate on the mounting groove inner wall, set up the through-hole that corresponds with first fixed orifices and second fixed orifices position on the electrode piece lateral wall, the piece of locking position includes the connecting plate, fixedly connected with on the connecting plate is counterpointed and is passed the first inserted bar of through-hole and first fixed orifices and counterpoint and is passed the second inserted bar of through-hole and second fixed orifices