SMD (Surface Mount Device) ceramic thermosensitive resistor

Abstract

The invention discloses a surface-mounted ceramic thermistor, and belongs to the technical field of thermistors, the surface-mounted ceramic thermistor comprises a ceramic resistor, an electrode is fixedly connected in the ceramic resistor, a bidirectional liquid spraying assembly is arranged in the ceramic resistor, and the bidirectional liquid spraying assembly comprises a slide rail III; the top of the third sliding rail is slidably connected with a hollow box, the top of the hollow box penetrates through and is rotationally connected with a cylindrical pipe, the top of the cylindrical pipe penetrates through and is connected with a drainage pipe in an inserted mode, and the rear end of the drainage pipe is connected with a liquefied spray type spray head in an inserted mode. The phenomenon that the two electrodes used for a long time are fused due to high temperature is avoided, the possibility that the ceramic resistor is burnt out is reduced, the high efficiency of safe conductive signal transmission of the two electrodes is enhanced, the conductive lead can be cooled, and the sensitivity of conductive detection of communication of the electrodes and the resistive film body is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of thermistors, and more particularly to a chip-type ceramic thermistor. Background Art

[0002] A thermistor is a sensing control tool used to sense and detect the thermal temperature of various electrical appliances and electronic components, thereby helping technicians to configure corresponding thermistors according to the temperature requirements of different types of electrical appliances. After the thermistor is soldered on the electrical circuit board, the temperature control range of the appliance can be tested by powering on. At the same time, qualified thermistor products can be produced and shipped to meet various customer order requirements for customers to buy and sell.

[0003] The existing thermistor uses a board-mounted wire-contact detection method, but this method can only be used to perform temperature sensing when soldered onto a circuit board. If the thermistor generates a lot of heat during use, the contact surface of the circuit board may be burned, causing the thermistor to be unable to sense and measure temperature normally.

[0004] In view of the above technical problems, the prior art has proposed some solutions. For example, a Chinese patent with authorization announcement number CN216388922U discloses a chip-type ceramic thermistor. The device includes a resistor chip and a conductive sheet, which can move and separate the welding protrusions at the welding part and automatically switch the mounting, thereby ensuring ventilation and heat dissipation of the thermistor during operation, enhancing the thermistor's ability to accurately sense the temperature of the circuit board, and improving detection efficiency.

[0005] In the process of sensing temperature, most of the existing chip thermistors first place the chip thermistors at the designated positions on the circuit board, and then weld the two ends of the thermistor with positive and negative electrodes by direct soldering until power is turned on for detection and a qualified thermistor is produced. In the actual thermistor welding circuit board detection process, this method will not only cause the electrodes at both ends of the thermistor to melt due to high temperature after long-term detection, resulting in unclear detection data of the resistance part of the thermistor, but also for some chip ceramic thermistors with larger size and larger resistance, after being installed on the circuit board for a long time, the leads connecting the electrodes and the resistance part will fuse due to long-term high-temperature contact, resulting in the resistance part being unable to sense the current and temperature conducted by the electrodes, causing the chip ceramic thermistor sensing detection to be slow and the detection effect to be poor, which seriously affects the normal use of the chip ceramic thermistor sensing detection. Summary of the invention

[0006] In view of the problems existing in the prior art, the object of the present invention is to provide a chip-type ceramic thermistor.

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A chip-type ceramic thermistor comprises a ceramic resistor, wherein an electrode is fixedly connected inside the ceramic resistor, two electrodes are provided, and a conductive lead is fixedly connected between the inner sides of the two electrodes, a resistor film is fixedly connected between the inner ring walls of the conductive lead, a bidirectional liquid spraying assembly is provided inside the ceramic resistor, the bidirectional liquid spraying assembly comprises a cylinder, the right side of the cylinder is rotatably connected to the inner bottom wall of the ceramic resistor, a concave slide plate 1 is fixedly connected to the output end of the cylinder, a slide rail 3 is fixedly connected to the top of the concave slide plate 1, a hollow box is slidably connected to the top of the slide rail 3, two hollow boxes are provided, and the two hollow boxes are symmetrically arranged inside the ceramic resistor, a cylindrical tube is penetrated through and rotatably connected to the top of the hollow box, a drainage tube is penetrated through and plugged into the top of the cylindrical tube, and a liquefied spray nozzle is plugged into the rear end of the drainage tube.

[0009] Furthermore, the tops of the two electrodes are covered with a nickel shell, and two nickel shells are provided, the bottoms of the two nickel shells are fixedly connected to the top edges of the ceramic resistors, a protective shell is fixedly connected between the inner sides of the two nickel shells, the inner top wall of the protective shell is fixedly connected to the resistor film body, the inner bottom wall of the ceramic resistor is fixedly connected to a slide rail 1 and a concave slide rail 2, the slide rail 1 and the slide rail 2 are symmetrically distributed, the bottom of the concave slide rail 1 is slidably connected to the slide rail 1, the rear side of the concave slide rail 1 is fixedly connected to a rack 1, and the rack The rear side of one is meshedly connected with a spur gear, the rear side of the spur gear is meshedly connected with a rack two, the rear side of the rack two is fixedly connected with a concave slide two, the bottom of the concave slide two is slidably connected with the slide rail two, the top of the concave slide two is fixedly connected to the hollow box on the rear end inner wall of the ceramic resistor, the bottom extension of the hollow box passes through and is slidably connected to the top of the concave slide one, the bottom extension of the hollow box is sleeved with a concave groove plate, the bottom of the concave groove plate is fixedly connected to the inner bottom wall of the ceramic resistor, and two concave groove plates are provided.

[0010] Furthermore, a liquid nitrogen box is fixedly connected between the inner walls of the hollow box, a feed pipe is penetrated and inserted into the front side of the liquid nitrogen box, a spiral tube is fixedly connected to the bottom of the cylindrical tube, the top of the feed pipe is penetrated and inserted into the bottom of the spiral tube, a liquid replenishment tube is penetrated and inserted into the right side of the liquid nitrogen box, and the top of the liquid replenishment tube is penetrated and extended out from the right side of the ceramic resistor.

[0011] Furthermore, a corner assembly is provided inside the bidirectional liquid spray assembly, and the corner assembly includes a drive motor, and the drive motor is fixedly connected to the inner wall of the hollow box, and the output end of the drive motor is fixedly connected to bevel gear 1, and the top of bevel gear 1 is meshedly connected to bevel gear 2, and the top of bevel gear 2 is penetrated by and fixedly connected to the spiral tube.

[0012] Furthermore, the bottom of the concave rod is threadedly connected to the outer surface of the spiral tube, the top of the concave rod penetrates and is slidably connected to the top of the hollow box, and the top of the concave rod is sleeved with the outer surface of the cylindrical tube.

[0013] Furthermore, a spray volume adjustment component is arranged inside the bidirectional liquid spray component, and the spray volume adjustment component includes a limit rod, two limit rods are provided, and the bottoms of the two limit rods are fixedly connected to the concave rod.

[0014] Furthermore, the top of the cylindrical tube is rotatably connected to an annular plate, and the top surface of the annular plate is rotatably connected to an arc rod, five of which are provided and are evenly distributed in a circle, and the inner ring end of the arc rod is sleeved with a fan-shaped liquid-stop plate, and the inner circle end of the fan-shaped liquid-stop plate is rotatably connected to the top surface of the cylindrical tube, and five of which are provided and are distributed in a mutually clamped state and cover the output port position at the top of the cylindrical tube.

[0015] Furthermore, an arc-shaped groove is opened on the top curved surface of the cylindrical tube, and there are two arc-shaped grooves. The outer surface of the annular plate is fixedly connected with a swing rod, and there are two swing rods. The two swing rods penetrate the arc-shaped groove and are slidably connected, and the bottoms of the two swing rods are aligned with the tops of the two limit rods.

[0016] Furthermore, a blowing assembly is provided on the top of the bidirectional spray assembly, and the blowing assembly includes a disc, which is sleeved on the top of the cylindrical tube, and an L-shaped sliding rod is passed through and inserted into the top surface of the disc. Four L-shaped sliding rods are provided, and the four L-shaped sliding rods are symmetrically distributed, and a turntable is passed through and inserted into the rear ends of the four L-shaped sliding rods, and a fan is fixedly connected to the rear side of the turntable.

[0017] Furthermore, the rotating disk and the fan are both sleeved on the outer surface of the drainage pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) This scheme provides a bidirectional liquid spray assembly, which can indirectly drive two liquefied spray nozzles to perform mobile liquid nitrogen spray cooling operations on the surfaces of the two electrodes during the left and right movement of the concave slide plate 1 and the concave slide plate 2, thereby avoiding the problem of the two electrodes being melted due to excessive heat after long-term use and the problem of blurred thermal signal of the electrode conduction, thereby improving the effectiveness of ceramic resistor detection, enhancing the safety of ceramic resistor cooling detection, and ensuring the normal use of ceramic resistor detection.

[0020] (2) This solution provides a corner assembly, which can indirectly drive the liquefied spray nozzle to rotate under the action of the continuous rotation of the spiral tube, so that the liquefied spray nozzle can perform an angle spray liquid nitrogen cooling operation on the contact part between the conductive lead and the electrode, thereby avoiding the conductive lead from being used at high temperature for a long time, causing the conductive lead to fuse, resulting in poor contact between the electrode and the resistor film, causing the path to be interrupted, and interfering with the detection of the ceramic resistor. The efficiency of the conductive lead is improved, the sensitivity of the detection of the connection between the electrode and the resistor film is enhanced, and the normal use of the conductive lead detection is ensured.

[0021] (3) This scheme sets a spray volume adjustment component. During the up and down movement of the two limit rods, the swing rod and the five fan-shaped liquid stop plates can be indirectly rotated, so that the five fan-shaped liquid stop plates can rotate and combine the liquid nitrogen sprayed from the liquefied spray nozzle to adjust the liquid nitrogen spray volume, thereby avoiding uneven liquid nitrogen spray volume, resulting in large-scale freezing of the conductive lead and the reduction of the electrical performance of the conductive lead, improving the effect of the conductive lead on conducting current, enhancing the accuracy of the thermal detection of the electrode and the resistor film, and ensuring the normal cooling of the ceramic resistor.

[0022] (4) This solution provides a blowing assembly, and under the action of the continuous rotation force of the fan, the fan can perform a blowing-type rapid cooling operation on the liquid nitrogen sprayed from the liquefied spray nozzle, so as to avoid the liquid nitrogen being unable to completely fuse and volatilize with the high-temperature conductive leads and electrodes after being sprayed, resulting in frost on the leads and poor conductive contact of the leads. The high efficiency of liquid nitrogen cooling the conductive leads is improved, the intensity of liquid nitrogen cooling is enhanced, and the sensitive sensing detection of the ceramic resistor is ensured to be normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0025] Figure 3 It is a partial structural schematic diagram of the hollow box and the concave groove plate in the present invention;

[0026] Figure 4 For the present invention Figure 2A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 5 For the present invention Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0028] Figure 6 For the present invention Figure 2 Schematic diagram of the enlarged structure at C in the middle;

[0029] Figure 7 For the present invention Figure 3 Schematic diagram of the enlarged structure at D in the middle;

[0030] Figure 8 It is a structural schematic diagram of the bidirectional liquid spraying assembly in the present invention;

[0031] Fig. 9 It is a partial structural schematic diagram of bevel gear 1 and bevel gear 2 in the present invention;

[0032] Fig.10 It is a schematic diagram of the partial structure of the concave rod and the spiral tube in the present invention;

[0033] Fig.11 It is a partial structural schematic diagram of the cylindrical tube and the fan-shaped liquid-stopping plate in the present invention;

[0034] Fig.12 It is a structural schematic diagram of the spray volume adjustment component in the present invention;

[0035] Fig.13 It is a schematic diagram of the structure of the blowing assembly in the present invention;

[0036] Fig.14 For the present invention Figure 8 Schematic diagram of the enlarged structure at E in the middle.

[0037] Description of the numbers in the figure:

[0038] 1. Ceramic resistor; 11. Electrode; 12. Conductive lead; 13. Resistor film; 14. Nickel shell; 15. Protective shell;

[0039] 2. Two-way liquid spray assembly; 21. Cylinder; 22. Slide rail 1; 23. Concave slide plate 1; 24. Hollow box; 25. Cylindrical tube; 26. Drainage tube; 27. Liquid spray nozzle; 28. Rack 1; 29. ​​Spur gear; 210. Rack 2; 211. Slide rail 2; 212. Concave slide plate 2; 213. Feed pipe; 214. Liquid nitrogen tank; 215. Liquid replenishment tube; 216. Spiral tube; 217. Concave slot plate; 218. Slide rail 3;

[0040] 3. Angle assembly; 31. Driving motor; 32. Bevel gear 1; 33. Bevel gear 2; 34. Concave rod;

[0041] 4. Spray volume adjustment assembly; 42. Limit rod; 43. Arc groove; 44. Swing rod; 45. Ring plate; 46. Arc rod; 47. Fan-shaped liquid stop plate;

[0042] 5. Blowing assembly; 51. Disc; 52. L-shaped slide bar; 53. Turntable; 54. Fan. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0044] See also Figures 1 to 14 A chip ceramic thermistor comprises a ceramic resistor 1, wherein an electrode 11 is fixedly connected inside the ceramic resistor 1, wherein two electrodes 11 are provided, and a conductive lead 12 is fixedly connected between the inner sides of the two electrodes 11, and a resistor film 13 is fixedly connected between the inner walls of the conductive lead 12, and a bidirectional liquid spraying component 2 is provided inside the ceramic resistor 1;

[0045] The bidirectional liquid spray assembly 2 includes a cylinder 21, the right side of which is rotatably connected to the inner bottom wall of the ceramic resistor 1, the output end of the cylinder 21 is fixedly connected to a concave slide 23, the top of the concave slide 23 is fixedly connected to a slide rail 3 218, the top of the slide rail 3 218 is slidably connected to a hollow box 24, two hollow boxes 24 are provided, and the two hollow boxes 24 are symmetrically arranged inside the ceramic resistor 1, the top of the hollow box 24 is penetrated by and rotatably connected to a cylindrical tube 25, the top of the cylindrical tube 25 is penetrated by and plugged with a drainage tube 26, and the rear end of the drainage tube 26 is plugged with a liquefied spray nozzle 27.

[0046] The tops of the two electrodes 11 are covered with a nickel shell 14, and the nickel shells 14 are provided with two. The bottoms of the two nickel shells 14 are fixedly connected to the top edges of the ceramic resistor 1, and a protective shell 15 is fixedly connected between the inner sides of the two nickel shells 14. The inner top wall of the protective shell 15 is fixedly connected to the resistor film body 13. The inner bottom wall of the ceramic resistor 1 is fixedly connected with a slide rail 1 22 and a concave slide plate 2 212. The slide rail 1 22 and the slide rail 2 211 are symmetrically distributed. The bottom of the concave slide plate 23 is slidably connected to the slide rail 1 22, and the rear side of the concave slide plate 1 23 is fixedly connected with a rack 1 28. The rear side of the rack 1 28 A spur gear 29 is meshedly connected, and a rack 210 is meshedly connected to the rear side of the spur gear 29. A concave slide 212 is fixedly connected to the rear side of the rack 210. The bottom of the concave slide 212 is slidably connected to the slide rail 211. The top of the concave slide 212 is fixedly connected to the hollow box 24 on the inner wall of the rear end of the ceramic resistor 1. The bottom extension of the hollow box 24 passes through and is slidably connected to the top of the concave slide 1 23. The bottom extension of the hollow box 24 is sleeved with a concave groove plate 217. The bottom of the concave groove plate 217 is fixedly connected to the inner bottom wall of the ceramic resistor 1. Two concave groove plates 217 are provided.

[0047] A liquid nitrogen agent box 214 is fixedly connected between the inner walls of the hollow box 24, a feed pipe 213 is penetrated and inserted into the front side of the liquid nitrogen agent box 214, a spiral tube 216 is fixedly connected to the bottom of the cylindrical tube 25, the top of the feed pipe 213 is penetrated and inserted into the bottom of the spiral tube 216, a liquid replenishing tube 215 is penetrated and inserted into the right side of the liquid nitrogen agent box 214, and the top of the liquid replenishing tube 215 is penetrated and extended from the right side of the ceramic resistor 1.

[0048] In view of the problem that thermistors in the prior art are soldered to the circuit board by direct soldering of solder points, and then the heat dissipation and welding conductivity of the thermistor are completed by the action of moving separation and automatic mounting switching. This method will not only cause the high-temperature melting phenomenon of the electrodes at both ends of the thermistor that are used for a long time, but also fail to cool the lead parts used for internal connection of the thermistor, resulting in the high-temperature melting phenomenon of the lead parts after long-term use, and the problem of poor inductive contact of the thermistor, the present application sets a two-way liquid spraying assembly 2. When in use, the output end of the cylinder 21 is first ventilated to drive the output end of the cylinder 21 to extend to the left, and the fixedly connected concave slide plate 23 is pushed to move to the left, so that the concave slide plate 23 with The hollow box 24 and the rack 28 slide to the left along the top of the slide rail 22, and the hollow box 24 drives the cylindrical tube 25, the drainage tube 26 and the liquefied spray nozzle 27 to slide to the left, and then after the liquefied spray nozzle 27 moves to the left to be flush with the position of the electrode 11 at the top of the left end of the ceramic resistor 1, the liquefied spray nozzle 27 can perform a mobile spraying liquid nitrogen cooling operation on the surface of the electrode 11 at the left end, so as to avoid the high-temperature melting phenomenon of the electrode 11 after long-term use, resulting in the deterioration of the thermal signal transmitted by the electrode 11, reducing the possibility of overheating failure of the electrode 11, improving the effectiveness of the cooling use of the electrode 11, enhancing the accuracy of the thermal detection of the ceramic resistor 1, and ensuring the normal use of the thermal detection of the ceramic resistor 1;

[0049] Synchronously, rack 1 28 pushes meshing spur gear 29 to rotate, and then the rotation of spur gear 29 drives meshing rack 210 to move rightward, so that rack 210 can drive concave slide 212 to move rightward, and then concave slide 212 drives liquefied spray nozzle 27 at the rear end of ceramic resistor 1 to move rightward, so that after the nozzle of liquefied spray nozzle 27 moves rightward to be flush with the position of electrode 11 at the top of the right end of ceramic resistor 1, liquefied spray nozzle 27 can perform mobile liquid nitrogen spray cooling operation on the surface of electrode 11 at the right end, further strengthen the cooling conduction of the two electrodes 11, increase the sensitivity of thermal signal transmission of the two electrodes 11, and ensure the normal thermal response of the two electrodes 11.

[0050] It should be noted that the process of spraying liquid nitrogen to cool the electrode 11 by the two liquefied spray nozzles 27 is to drive the two liquefied spray nozzles 27 to move to the position flush with the two electrodes 11 under the interactive left and right moving force of the concave slide 1 23 and the concave slide 2 212, and then the two liquefied spray nozzles 27 can perform a bidirectional mobile spraying liquid nitrogen cooling operation on the surface of the electrode 11, thereby completing the process of quickly cooling the two electrodes 11 and conducting them, and the feeding process of the two liquefied spray nozzles 27 is to enable the liquid nitrogen tank 214 to transfer the liquid nitrogen inside to the feeding pipe 2 under the action of the diversion pump built into the liquid nitrogen tank 214. 13, and then guided by the feed pipe 213 to the spiral tube 216, the cylindrical tube 25 and the drainage pipe 26, so that the drainage pipe 26 transports the drained liquid nitrogen to the liquefied spray nozzle 27, thereby completing the supply of liquid nitrogen energy to the liquefied spray nozzle 27, and then with the force of the cylinder 21 moving leftward, the liquefied spray nozzle 27 can be guided by the inner wall of the concave groove plate 217, so that the hollow box 24 can indirectly drive the liquefied spray nozzle 27 to move backward along the top of the slide rail three 218, so that the liquefied spray nozzle 27 can accurately and efficiently spray liquid nitrogen to cool the surface of the electrode 11, ensuring that the electrode 11 actually completes the cooling process.

[0051] By setting up a bidirectional liquid spray component 2, the present solution can indirectly drive two liquefied spray nozzles 27 to perform a mobile liquid nitrogen spray cooling operation on the surfaces of the two electrodes 11 during the translation of the concave slide 1 23 and the concave slide 2 212, thereby avoiding the problem of the two electrodes 11 being melted due to excessive heat after long-term use, and the problem of the electrode 11 conducting thermistor signal being blurred, thereby improving the effectiveness of the ceramic resistor 1 detection, enhancing the safety of the ceramic resistor 1 cooling detection, and ensuring the normal use of the ceramic resistor detection 1.

[0052] like Fig. 9 and Fig.10 As shown, a corner component 3 is provided inside the bidirectional liquid spray component 2;

[0053] The corner assembly 3 includes a driving motor 31, which is fixedly connected to the inner wall of the hollow box 24. The output end of the driving motor 31 is fixedly connected to a bevel gear 1 32, and the top of the bevel gear 1 32 is meshedly connected to a bevel gear 2 33. The top of the bevel gear 2 33 penetrates and is fixedly connected to the spiral tube 216.

[0054] The bottom of the concave rod 34 is threadedly connected to the outer surface of the spiral tube 216 , the top of the concave rod 34 penetrates and is slidably connected to the top of the hollow box 24 , and the top of the concave rod 34 is sleeved with the outer surface of the cylindrical tube 25 .

[0055] By setting the corner assembly 3, when in use, after the liquefied spray nozzle 27 completes the surface spray cooling of the electrode 11, the output shaft of the driving motor 31 is powered on to rotate, driving the fixedly connected bevel gear 1 32 to rotate, and the rotation of the bevel gear 1 32 drives the meshing bevel gear 2 33 to rotate, and the bevel gear 2 33 drives the spiral tube 216 to rotate, and then the spiral tube 216 drives the cylindrical tube 25, the drainage tube 26 and the liquefied spray nozzle 27 to rotate, so that the spiral tube 216 can be rotated. The liquefied spray nozzle 27 is then driven to perform angular movement, so that the liquefied spray nozzle 27 can further perform angular spray liquid nitrogen cooling operation on the conductive lead 12 that is firmly in contact with the electrode 11 and the resistor film 13, thereby avoiding the conductive failure of the conductive lead 12 due to long-term high-temperature use, and the phenomenon of the conductive lead 12 line fusing, which affects the normal detection of the ceramic resistor 1, improves the efficiency of the cooling conduction of the conductive lead 12, enhances the accuracy of the conductive lead 12 conduction detection, and ensures the normal conduction thermal temperature detection of the ceramic resistor 1.

[0056] It should be noted that the corner turning process of the liquefied spray nozzle 27 is to indirectly drive the liquefied spray nozzle 27 to rotate under the meshing rotation of the driving motor 31 and the bevel gear 32. At the same time, under the continuous rotation of the spiral tube 216, the spiral tube 216 can drive the threaded concave rod 34 to move upward until the top of the concave rod 34 moves up to be flush with the top curved surface of the cylindrical tube 25. Then, the nozzle of the liquefied spray nozzle 27 can be rotated to align with the contact position of the conductive lead 12, thereby realizing the corner spray cooling process of the liquefied spray nozzle 27 on the conductive lead 12.

[0057] This solution provides a corner component 3, which can indirectly drive the liquefied spray nozzle 27 to rotate under the action of the continuous rotation of the spiral tube 216, so that the liquefied spray nozzle 27 can perform an angle spray liquid nitrogen cooling operation on the contact part between the conductive lead 12 and the electrode 11, thereby avoiding the conductive lead 12 from being used at high temperature for a long time and causing a fuse, resulting in poor contact between the electrode 11 and the resistor film body 13, interruption of the path, and interference with the detection of the ceramic resistor 1. The efficiency of the conductive lead 11 when it is powered on is improved, the sensitivity of the connection detection of the electrode 11 and the resistor film body 13 is enhanced, and the normal use of the conductive detection of the ceramic resistor 1 is ensured.

[0058] like Fig.11 and Fig.12 As shown, a spray volume adjustment component 4 is provided inside the bidirectional liquid spray component 2;

[0059] The spray volume adjustment assembly 4 includes a limiting rod 42 . Two limiting rods 42 are provided, and the bottoms of the two limiting rods 42 are fixedly connected to the concave rod 34 .

[0060] The top of the cylindrical tube 25 is rotatably connected to an annular plate 45, and the top surface of the annular plate 45 is rotatably connected to an arc rod 46. Five arc rods 46 are provided, and the five arc rods 46 are evenly distributed in a circular shape. The inner ring end of the arc rod 46 is sleeved with a fan-shaped liquid-stopping plate 47, and the inner circle end of the fan-shaped liquid-stopping plate 47 is rotatably connected to the top surface of the cylindrical tube 25. Five fan-shaped liquid-stopping plates 47 are provided, and the five fan-shaped liquid-stopping plates 47 are in a mutually clamped distribution state and cover the output port position at the top of the cylindrical tube 25.

[0061] The top curved surface of the cylindrical tube 25 is provided with an arc groove 43, and two arc grooves 43 are provided. The outer surface of the annular plate 45 is fixedly connected with a swing rod 44, and two swing rods 44 are provided. The two swing rods 44 penetrate the arc groove 43 and are slidably connected, and the bottoms of the two swing rods 44 are aligned with the tops of the two limit rods 42.

[0062] By setting the spray volume adjustment component 4, when working, the cylindrical tube 25 can synchronously drive the swing rod 44, the annular plate 45, the arc rod 46 and the fan-shaped liquid-stopping plate 47 to rotate during the rotation of the cylindrical tube 25. At this time, the two limit rods 42 are acted on by the shifting force on the concave rod 34, so that the concave rod 34 drives the two limit rods 42 to move upward. When the top of the limit rod 42 moves up to be flush with the outer surface of the swing rod 44, the cylindrical tube 25 continues to rotate, so that the limit rod 42 abuts against the outer surface of the swing rod 44, and the swing rod 44 rotates along the inside of the arc groove 43, and the swing rod 44 drives the annular plate 45 to rotate, so that the annular plate 45 pulls the five arc rods 46 to rotate, so that the arc rod 46 pulls The five fan-shaped liquid-stopping plates 47 rotate and slide out with the top of the output port of the cylindrical tube 25 as the axis, thereby gradually merging the output port of the cylindrical tube 25, so that the five fan-shaped liquid-stopping plates 47 can rotate to adjust the liquid nitrogen sprayed by the liquefied spray nozzle 27. The liquid nitrogen spraying amount can be adjusted to avoid excessive liquid nitrogen sprayed by the liquefied spray nozzle 27, resulting in uneven contact of the sprayed part of the conductive lead 12, resulting in a decrease in the conductive conduction signal performance of the conductive lead 12, affecting the normal thermal conduction detection of the electrode 11 and the resistor film 13, improving the accuracy of the liquefied spray nozzle 27 in cooling the conductive lead 12 and the electrode 11 with liquid nitrogen, increasing the sensitivity of the liquefied spray nozzle 27 in cooling with liquid nitrogen, and ensuring the normal use of the liquefied spray nozzle 27 in cooling with liquid nitrogen.

[0063] It should be noted that the process of adjusting the spray volume of the liquefied spray nozzle 27 is that the five fan-shaped liquid stop plates 47 are continuously rotating and swinging, so that the five fan-shaped liquid stop plates 47 can open and close the output port of the cylindrical tube 25 to adjust the spray volume. When the liquefied spray nozzle 27 sprays liquid nitrogen to cool the contact part of the conductive lead 12, the swing rod 44 can indirectly pull the five fan-shaped liquid stop plates 47 to rotate and merge the spray volume to assist the liquefied spray nozzle 27 in spraying liquid on the conductive lead 12. If the liquefied spray nozzle 27 needs to spray liquid nitrogen to cool the electrode 11, the swing rod 44 can indirectly pull the five fan-shaped liquid stop plates 47 to rotate and open the covering type to adjust the spray volume under the limiting action of the two limiting rods 42, further assisting the liquefied spray nozzle 27 to complete the liquid spray cooling process of the electrode 11.

[0064] In this solution, by setting up a spray volume adjustment component 4, during the upward movement of the two limit rods 42, the swing rod 44 and the five fan-shaped liquid stop plates 47 can be indirectly rotated, so that the five fan-shaped liquid stop plates 47 can rotate and combine the liquid nitrogen sprayed from the liquefied spray nozzle 27 to adjust the liquid nitrogen spray volume, thereby avoiding uneven liquid nitrogen spray volume, resulting in large-scale freezing of the conductive lead 12 and a decrease in the electrical performance of the conductive lead 12, improving the effect of the conductive lead 12 on conducting current, enhancing the accuracy of the thermal detection of the electrode 11 and the resistor film 13, and ensuring the normal cooling and use of the ceramic resistor 1.

[0065] like Fig.13 and Fig.14 As shown, a blowing assembly 5 is provided on the top of the bidirectional liquid spray assembly 2;

[0066] The blowing assembly 5 includes a disc 51, which is sleeved on the top of the cylindrical tube 25. An L-shaped sliding rod 52 is inserted through and plugged into the top surface of the disc 51. Four L-shaped sliding rods 52 are provided, and the four L-shaped sliding rods 52 are symmetrically distributed. A turntable 53 is inserted through and plugged into the rear ends of the four L-shaped sliding rods 52. A fan 54 is fixedly connected to the rear side of the turntable 53.

[0067] The rotating disk 53 and the fan 54 are both sleeved on the outer surface of the drainage tube 26 .

[0068] By setting up the blowing component 5, when working, the cylindrical tube 25 can synchronously drive the disc 51 to rotate under the action of the continuous rotation force of the cylindrical tube 25, and the disc 51 can indirectly drive the turntable 53 plugged at the rear ends of the four L-shaped slide bars 52 to rotate, and then the turntable 53 drives the fan 54 to rotate, so that the fan 54 can perform a rotational blowing rapid cooling operation on the liquid nitrogen sprayed from the liquefied spray nozzle 27, so as to avoid the liquid nitrogen from being unable to completely fuse and volatilize with the high-temperature conductive lead 12 and the electrode 11 after being sprayed, resulting in frost on the lead 12, resulting in poor contact of the conductive lead 12, thereby improving the efficiency of liquid nitrogen cooling the conductive lead 12, enhancing the intensity of liquid nitrogen cooling, and ensuring the normal sensitive sensing detection of the ceramic resistor 1.

[0069] It should be noted that the rapid cooling process of the liquefied spray nozzle 27 is to diffuse the quantitative liquid nitrogen sprayed from the liquefied spray nozzle 27 under the continuous rotation and blowing action of the fan 54, so as to achieve the effect of rapid cooling of the electrode 11 and the conductive lead 12, thereby ensuring the normal safety detection of the ceramic resistor 1.

[0070] Method of use: When the present invention is used, the ceramic resistor 1 is first placed at a designated position on the circuit detection board and welded and fixed, and then the needle of the syringe filled with liquid nitrogen is inserted into the input port of the liquid replenishing tube 215, and the syringe is manually pushed to transport the liquid nitrogen in the syringe to the liquid nitrogen tank 214 fixedly connected to the output end of the liquid replenishing tube 215. After the liquid nitrogen in the liquid nitrogen tank 214 is filled, the needle of the syringe is pulled out, and the liquid injection is completed. Then, the output end of the cylinder 21 in the two-way liquid spraying assembly 2 is driven to extend to the left, and the two liquefied spray nozzles 27 are indirectly driven to perform a mobile liquid nitrogen spray cooling operation on the surfaces of the two electrodes 11. After the corner assembly 3 is further moved to be flush with the position of the electrode 11, the output shaft of the drive motor 31 can be driven to rotate, thereby making the liquefied spray nozzle 27 The contact part of the conductive lead 12 is subjected to an angle-type liquid nitrogen spray cooling operation, and the angle component 3 is synchronously rotated to drive the spray volume adjustment component 4 to perform a rotational opening and closing spray volume adjustment operation on the liquefied spray nozzle 27. At the same time, the angle component 3 is rotated to drive the blowing component 5 to perform a blowing-type rapid cooling operation on the liquid nitrogen sprayed from the liquefied spray nozzle 27. After the two liquefied spray nozzles 27 complete the cooling process of the electrode 11 and the conductive lead 12, the cylinder 21 stops moving, the drive motor 31 stops rotating, and the ceramic resistor 1 starts the next round of thermal detection. If the ceramic resistor 1 has a high temperature again after being used for a long time during detection, the above steps are repeated for the cycle operation. After the detection and use of the ceramic resistor 1 is completed, the cylinder 21 stops moving, the drive motor 31 stops rotating, and the device stops running.

[0071] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chip ceramic thermistor, comprising a ceramic resistor (1), wherein an electrode (11) is fixedly connected inside the ceramic resistor (1), wherein two electrodes (11) are provided, and a conductive lead (12) is fixedly connected between the inner sides of the two electrodes (11), and a resistor film (13) is fixedly connected between the inner ring walls of the conductive lead (12), characterized in that: A bidirectional liquid spraying component (2) is arranged inside the ceramic resistor (1); The bidirectional liquid spraying assembly (2) comprises a cylinder (21), the right side of which is rotatably connected to the inner bottom wall of the ceramic resistor (1), the output end of the cylinder (21) is fixedly connected to a concave slide plate (23), the top of which is fixedly connected to a slide rail (218), the top of which is slidably connected to a hollow box (24), two hollow boxes (24) are provided, and the two hollow boxes (24) are symmetrically arranged inside the ceramic resistor (1), the top of the hollow box (24) is penetrated by and rotatably connected to a cylindrical tube (25), the top of the cylindrical tube (25) is penetrated by and plugged with a drainage tube (26), and the rear end of the drainage tube (26) is plugged with a liquefied spray nozzle (27).

2. A chip ceramic thermistor according to claim 1, characterized in that: The tops of the two electrodes (11) are covered with a nickel shell (14), two of the nickel shells (14) are provided, the bottoms of the two nickel shells (14) are fixedly connected to the top edge of the ceramic resistor (1), a protective shell (15) is fixedly connected between the inner sides of the two nickel shells (14), the inner top wall of the protective shell (15) is fixedly connected to the resistor film body (13), the inner bottom wall of the ceramic resistor (1) is fixedly connected to a slide rail 1 (22) and a concave slide plate 2 (212), the slide rail 1 (22) and the slide rail 2 (211) are symmetrically distributed, the bottom of the concave slide plate 1 (23) is slidably connected to the slide rail 1 (22), the rear side of the concave slide plate 1 (23) is fixedly connected to a rack 1 (28), and the rack 1 (28) is fixedly connected to the inner bottom wall of the ceramic resistor (1). The rear side is meshedly connected with a spur gear (29), the rear side of the spur gear (29) is meshedly connected with a rack gear 2 (210), the rear side of the rack gear 2 (210) is fixedly connected with a concave slide plate 2 (212), the bottom of the concave slide plate 2 (212) is slidably connected with a slide rail 2 (211), the top of the concave slide plate 2 (212) is fixedly connected with a hollow box (24) on the inner wall of the rear end of the ceramic resistor (1), the bottom extension of the hollow box (24) passes through and is slidably connected to the top of the concave slide plate 1 (23), the bottom extension of the hollow box (24) is sleeved with a concave groove plate (217), the bottom of the concave groove plate (217) is fixedly connected to the inner bottom wall of the ceramic resistor (1), and two concave groove plates (217) are provided.

3. A chip ceramic thermistor according to claim 1, characterized in that: A liquid nitrogen agent box (214) is fixedly connected between the inner walls of the hollow box (24); a feed pipe (213) is inserted through the front side of the liquid nitrogen agent box (214); a spiral tube (216) is fixedly connected to the bottom of the cylindrical tube (25); the top of the feed pipe (213) is inserted through the bottom of the spiral tube (216); a liquid replenishing tube (215) is inserted through the right side of the liquid nitrogen agent box (214); and the top of the liquid replenishing tube (215) is inserted through the right side of the ceramic resistor (1) and is arranged to extend out.

4. A chip ceramic thermistor according to claim 3, characterized in that: A corner assembly (3) is arranged inside the bidirectional liquid spray assembly (2), and the corner assembly (3) comprises a drive motor (31), the drive motor (31) is fixedly connected to the inner wall of the hollow box (24), the output end of the drive motor (31) is fixedly connected to a bevel gear 1 (32), the top of the bevel gear 1 (32) is meshingly connected to a bevel gear 2 (33), and the top of the bevel gear 2 (33) penetrates and is fixedly connected to the spiral tube (216).

5. A chip ceramic thermistor according to claim 4, characterized in that: The bottom of the concave rod (34) is threadedly connected to the outer surface of the spiral tube (216), the top of the concave rod (34) penetrates and is slidably connected to the top of the hollow box (24), and the top of the concave rod (34) is sleeved with the outer surface of the cylindrical tube (25).

6. A chip ceramic thermistor according to claim 5, characterized in that: A spray volume adjustment component (4) is arranged inside the bidirectional liquid spray component (2), and the spray volume adjustment component (4) comprises a limit rod (42). Two limit rods (42) are provided, and the bottoms of the two limit rods (42) are fixedly connected to the concave rod (34).

7. A chip ceramic thermistor according to claim 6, characterized in that: The top of the cylindrical tube (25) is rotatably connected to an annular plate (45), and the top surface of the annular plate (45) is rotatably connected to an arc-shaped rod (46). Five arc-shaped rods (46) are provided, and the five arc-shaped rods (46) are in a circular and evenly distributed form. The inner ring end of the arc-shaped rod (46) is sleeved with a fan-shaped liquid-stopping plate (47), and the inner circle end of the fan-shaped liquid-stopping plate (47) is rotatably connected to the top surface of the cylindrical tube (25). Five fan-shaped liquid-stopping plates (47) are provided, and the five fan-shaped liquid-stopping plates (47) are in a mutually clamped and distributed state, and cover the output port position at the top of the cylindrical tube (25).

8. The chip ceramic thermistor according to claim 7, characterized in that: The top curved surface of the cylindrical tube (25) is provided with an arc groove (43), and two arc grooves (43) are provided. The outer surface of the annular plate (45) is fixedly connected with a swing rod (44), and two swing rods (44) are provided. The two swing rods (44) penetrate the arc groove (43) and are slidably connected. The bottoms of the two swing rods (44) are aligned with the tops of the two limit rods (42).

9. The chip ceramic thermistor according to claim 1, characterized in that: A blowing assembly (5) is arranged on the top of the bidirectional liquid spray assembly (2), and the blowing assembly (5) comprises a disc (51), and the disc (51) is sleeved on the top of the cylindrical tube (25). An L-shaped sliding rod (52) is passed through and inserted into the top surface of the disc (51). Four L-shaped sliding rods (52) are provided, and the four L-shaped sliding rods (52) are symmetrically distributed. A rotating disk (53) is passed through and inserted into the rear ends of the four L-shaped sliding rods (52), and a fan (54) is fixedly connected to the rear side of the rotating disk (53).

10. The chip ceramic thermistor according to claim 9, characterized in that: The rotating disk (53) and the fan (54) are both sleeved on the outer surface of the drainage tube (26).

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