WO2019037681A1 - 一种热风枪 - Google Patents

一种热风枪 Download PDF

Info

Publication number
WO2019037681A1
WO2019037681A1 PCT/CN2018/101315 CN2018101315W WO2019037681A1 WO 2019037681 A1 WO2019037681 A1 WO 2019037681A1 CN 2018101315 W CN2018101315 W CN 2018101315W WO 2019037681 A1 WO2019037681 A1 WO 2019037681A1
Authority
WO
WIPO (PCT)
Prior art keywords
hot air
heat gun
heating
detecting
bracket
Prior art date
Application number
PCT/CN2018/101315
Other languages
English (en)
French (fr)
Inventor
杨伟明
韩挺
Original Assignee
浙江普莱得电器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201721048562.9U external-priority patent/CN207180014U/zh
Priority claimed from CN201710719664.7A external-priority patent/CN107655206B/zh
Priority claimed from CN201710718508.9A external-priority patent/CN107388579B/zh
Application filed by 浙江普莱得电器有限公司 filed Critical 浙江普莱得电器有限公司
Publication of WO2019037681A1 publication Critical patent/WO2019037681A1/zh

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element

Definitions

  • the utility model relates to the technical field of mechanical heating equipment, in particular to a heat air gun.
  • the heat gun is a heating tool for forming a hot air stream after heating the air, and has various functions. Specifically, the heat gun can be used to remove the old paint on the metal surface, remove the self-adhesive sticker, and heat the plastic hose to bend it. Drying damp wood, heating to shrink the packaging film and packaging tube, derusting, heating, shrinking and heating the polyethylene to connect the metal, softening the solder, etc., and also using the hot airflow from the core of the heating resistor wire Solder or remove the component.
  • the existing hot air gun is generally provided with a temperature display for displaying the hot air temperature of the air blown by the hot air gun, so that the user can understand the working condition of the heat gun.
  • the temperature display on existing hot air guns does not effectively reflect the temperature of the object being heated.
  • the distance between the hot air gun and the object to be heated is large, the temperature of the object to be heated is low, the heating effect is poor, and the efficiency is low.
  • the distance between the heat gun and the object to be heated is small, the temperature of the object to be heated is high, which may cause the object to be heated to melt, cause fire or other physical/chemical changes, and have low operational safety.
  • the existing hot air gun generally adopts a linear shifting structure or a push-button shifting structure.
  • the linear shifting structure has a long moving stroke, and the push-type shifting structure requires a large pre-installation range.
  • the heat gun is not compact enough, the volume is increased, and it is not easy to operate and use.
  • the components in the existing heat guns are generally fixedly connected by screws, and the assembly materials are large, and other tools are needed for assembly, the assembly is inconvenient, the production efficiency is low, and the modern production requirements cannot be satisfactorily met.
  • the fixed connection between the components is achieved by the screw, there is a defect that the screw is loosened or the screw is not completely tightened, which may result in unreliable fixing between the components and affect the normal use of the heat gun.
  • a heat air gun includes a casing, a main control board and a hot air device are arranged in the outer casing, and the hot air device comprises a heat generating component, a fan and a motor for driving the fan to rotate, and the outer casing
  • the front end is provided with a hot air duct for discharging hot air
  • the heat generating component is disposed in the hot air duct
  • the heat generating component and the motor are electrically connected to the main control board
  • the outer casing is further provided with a temperature detecting device and a heating indicating device.
  • the temperature detecting device comprises a detecting circuit board electrically connected to the main control board and an infrared detecting head disposed on the detecting circuit board, and the heating component is provided with a detecting channel for receiving the infrared radiation energy of the infrared detecting head, the heating indicating device
  • the utility model comprises a control substrate electrically connected to the main control board and an indicator light arranged on the control substrate, wherein the heating component comprises a hollow bracket and a heating wire wound around the bracket, wherein the bracket is provided with an insulated and insulated connecting tube, and the detecting The channel is disposed on the connecting tube, and the infrared detecting head is located in the axial projection surface of the detecting channel.
  • the indicator light is provided in plurality, and the plurality of indicator lights are evenly spaced along the length direction of the control substrate, and the housing is provided with a plurality of sockets matched with the indicator lights.
  • a capacitor is disposed on the main control board.
  • the detecting circuit board is provided with a laser head for positioning the detecting position of the temperature detecting device, and the laser head is located in the axial projection plane of the detecting channel.
  • the main control board is provided with a control module for controlling the motor
  • the control module is provided with a button post, and the inside of the housing is rotated and provided with a knob connected to the button post, and when the knob is rotated, the button post is moved on the control module. Adjust the speed of the motor.
  • control module is provided with a slider, and the slider is provided with a slot for the button post to be inserted, and the knob is connected to the slider.
  • the slider is provided with a protruding post on a side facing away from the control module, and the knob is provided with a transmission hole for inserting the protruding post, and the knob is connected to the sliding block through the cooperation of the transmission hole and the protruding column.
  • the hot air device further includes an inner bracket for connecting the fan to the motor and an outer bracket disposed outside the inner bracket, the outer bracket being disposed behind the hot air duct, between the outer support and the hot air duct
  • a positioning ring is provided for connecting, the front end portion of the positioning ring is evenly provided with a plurality of buckles in the circumferential direction, and the rear end portion of the hot air pipe is provided with a positioning ring, and the positioning ring is uniformly provided with a card hole matching the buckle in the circumferential direction.
  • the rear end of the hot air pipe is connected to the positioning ring through the cooperation of the card hole and the buckle.
  • the outer wall of the inner bracket is provided with a plurality of blocks, and the rear end of the outer support is provided with a card slot matched with the card block, and the rear end of the outer support is connected by the cooperation of the card slot and the card block.
  • the buckle includes a connecting portion and a limiting portion, and the limiting portion cooperates with a surface of the positioning ring to fix the axial direction of the hot air duct.
  • connecting portion and the limiting portion are integrally formed and have a " ⁇ " shape.
  • the rear end surface of the positioning ring is provided with a plurality of connecting protrusions
  • the front end surface of the outer support is provided with a plurality of concave holes
  • the positioning ring is fixed by the plugging and matching of the plurality of connecting protrusions and the plurality of concave holes.
  • an inner wall of the detecting channel is provided with a light reflecting layer.
  • the reflective layer is a reflective coating applied to the inner wall of the detection channel; or the reflective layer is aluminum foil or tin foil or fluorescent paper or electro-optical paper coated on the inner wall of the detection channel.
  • the housing is provided with a temperature display for displaying the temperature detected by the temperature detecting device, and the temperature display is electrically connected to the temperature detecting device.
  • a temperature detecting device and a heating indicating device are added in the outer casing, and the temperature of the heated object can be accurately measured by the infrared detecting head, and the detected circuit board transmits the measured temperature to the main control board, and the main control The board compares the measured temperature with a preset value. When the measured temperature is higher or lower than the preset value, the main control board prompts the user to pay attention to the operation by controlling the indication state of the substrate control indicator. In this way, an appropriate distance can be maintained between the heat gun and the object to be heated, so that the object to be heated is in an appropriately heated state, and the safety hazard of melting or igniting of the object to be heated due to the unknown or uncontrollable heating temperature is avoided.
  • the heating indicating device reminds the user to pay attention to the operation through the indicator light, and the indication is more obvious, which is convenient for effectively reminding the user to pay attention; at the same time, the heat-insulating component is provided with an insulated and insulated connecting pipe, and the detecting channel is disposed on the connecting pipe. Under the isolation of the connecting pipe, the heat of the heat generating component is not transmitted to the detecting channel through the connecting pipe, thereby avoiding the heat of the heat generating component affecting the detection of the infrared detecting head, and ensuring the accuracy of the temperature detecting device detecting the temperature of the heated object.
  • the infrared detecting head is located in the axial projection surface of the detecting channel, and the infrared radiation energy of the heated object can be directly and fully received by the infrared detecting head after passing through the detecting channel, further ensuring the accuracy of the temperature detecting device detecting the temperature of the heated object.
  • the indicator light flashes in sequence from the front to the rear, indicating that the user is away from the object to be heated.
  • the indicator light flashes in sequence from the rear to the front, indicating that the user is close to the object to be heated. In this way, the indication function of the heating indicating device to the user during the working process can be further improved, and the user can operate accurately.
  • the capacitor is set on the main control board. After the power is turned off, the capacitor can supply power to the main control board and the heating indicating device for a short time.
  • the hot air blower is off, the residual temperature of the heating component is high.
  • the command light of the main control board flashes to remind the user to avoid the user being burned by the residual temperature of the heating component or randomly placed. The safety hazard of the hot air gun further enhances the safety of use.
  • the laser head is arranged on the detecting circuit board, and the laser head is located in the axial projection surface of the detecting channel, and the laser head can accurately locate the specific position of the heated object, thereby further ensuring the accuracy of the temperature detecting device, thereby improving the accuracy.
  • the heating effect of the hot air gun on the heated object is guaranteed.
  • the main control panel is provided with a control module for controlling the motor.
  • the control module is provided with a button post, and the inside of the housing is rotated to set a knob connected to the button post.
  • the knob is rotated, the button post is moved on the control module to adjust the rotation speed of the motor, thereby achieving the purpose of adjusting the discharge wind speed.
  • the rotation mode is used instead of the linear mode and the button mode to achieve the purpose of shifting, and the installation space and the operation space required are small, so that the overall structure of the heat gun can be more compact, and the body is easy to hold and use.
  • the slider is arranged on the control module, the button post is inserted in the slot, and the knob is connected to the slider, thereby achieving the purpose of connecting to the button post.
  • the knob is turned, the slider is driven by the slider to move on the control module to achieve the purpose of shifting.
  • the linear motion required for adjusting the button post is converted into the rotation of the knob, so that the overall structure of the shifting mechanism is compact and easy to adjust.
  • the slider is arranged on the slider, and the transmission hole is arranged on the knob.
  • the knob drives the slider to move back and forth on the control module through the cooperation of the transmission hole and the protruding column.
  • the structure of the transmission between the knob and the slider is simple and compact, and the transmission is effective. To make the internal structure of the whole machine compact.
  • the outer support and the hot air pipe are connected by a positioning ring, and the rear end of the positioning ring and the hot air pipe are connected by the cooperation of the buckle and the card hole.
  • the connection structure between the positioning ring and the hot air pipe is simple, and the axial positioning and the circumferential positioning of the hot air pipe can be simultaneously realized, and the connection between the two is relatively firm and not easy to fall off after assembly.
  • the hot air duct and the positioning ring are assembled, it is not necessary to borrow an auxiliary tool, and the connection can be realized only by the plug rotation operation, the assembly efficiency is high, and the disassembly and assembly are facilitated during maintenance.
  • the outer support and the inner bracket are connected by the cooperation of the card slot and the card block, and the outer support and the outer casing are connected by the cooperation of the clamping protrusion and the clamping groove, and the connection structure between the components is simple.
  • the connection strength can well meet the installation requirements, which is convenient for disassembly and assembly, and no need to borrow auxiliary tools when disassembling.
  • the buckle comprises a connecting portion and a limiting portion.
  • the hot air pipe and the positioning ring are inserted into the position, and then the hot air pipe is rotated, so that the surface of the positioning ring cooperates with the limiting portion to fix the axial direction of the hot air pipe. In this way, the hot air pipe can be fixed well, and the fixing method is simple and the fixing is reliable.
  • the rear end surface of the positioning ring is provided with a plurality of connecting protrusions, and the front end surface of the outer support is provided with a plurality of concave holes, so that the positioning ring is fixed together by a plurality of connecting protrusions and a plurality of concave holes.
  • the infrared radiation energy generated by the heated object after being heated can be emitted to the infrared detection head through the reflective layer, so that the infrared detection head can receive more effective infrared radiation energy.
  • the accuracy of the temperature detection device is improved to ensure the reliability of the operation of the heat gun.
  • the reflective layer is a reflective coating applied to the inner wall of the detection channel, which not only facilitates the infrared detection head to receive external infrared radiation energy, but also facilitates the processing of the reflective layer, which can be processed only by coating, and is easy to implement; or, reflective
  • the layer is aluminum foil paper or tin foil paper or fluorescent paper or electro-optical paper coated on the inner wall of the detection channel, so that the infrared detecting head can better receive the external infrared radiation energy, thereby ensuring the accuracy of the detected temperature
  • the reflective layer is Aluminum foil or tin foil paper or fluorescent paper or electro-optical paper, which is easy to damage or replace after a long time of use, and the cost is low.
  • the temperature display By setting a temperature display on the outer casing, and the temperature display is electrically connected with the temperature detecting device, the temperature detected by the temperature detecting device can be clearly displayed on the display screen, which is convenient for the user to observe when using the heat gun, and enhance the user. The convenience of operation has greatly improved user satisfaction.
  • FIG. 1 is a schematic view showing the internal structure of a heat gun according to an embodiment of the present invention
  • FIG. 2 is a schematic structural view of a top casing and a hot air device in a heat gun according to an embodiment of the present invention
  • FIG. 3 is a perspective view of a top housing in a heat gun according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of a heating indicating device in a heat gun according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural view of a main control board in a heat gun according to an embodiment of the present invention.
  • FIG. 6 is a perspective view of a knob in a heat gun according to an embodiment of the present invention.
  • Figure 7 is a side view of a knob in a heat gun according to an embodiment of the present invention.
  • Figure 8 is a partial schematic view showing the inside of a casing in a heat gun according to an embodiment of the present invention.
  • Figure 9 is an exploded view of a hot air device in a heat gun according to an embodiment of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the heat gun provided in the first embodiment of the present invention comprises a casing 1 in which a main control board 2, a hot air device 3, a temperature detecting device 4, a heating indicating device 5 and a knob 6 are disposed.
  • the outer casing 1 includes a left casing 11, a right casing 12 and a top casing 13 fixed together, and the lower portion of the left casing and the lower portion of the right casing are each provided with an integrally formed handle housing 14 and handle housings on both sides.
  • the handle is combined to form a handle, and the handle is provided with a main switch 15 for turning on or off the power source, and the left and right housings are provided with air inlet holes.
  • the upper part of the left casing, the upper part of the right casing and the top casing are combined to form a receiving cavity, and the main control board 2, the hot air device 3, the temperature detecting device 4, the heating indicating device 5 and the knob 6 are all installed in the receiving cavity.
  • the hot air device 3 includes a heat generating component 36, a fan 31, and a motor 32 for driving the fan to rotate.
  • the heating indicating device 5 includes a control substrate 51 and an indicator light 52 disposed on the control substrate.
  • the control substrate is electrically connected to the main control board 2, and the indicator light is provided in plurality or multiple.
  • the indicators are evenly spaced along the length of the control board.
  • the longitudinal direction of the control substrate 51 coincides with the exhaust direction of the heat gun.
  • the front end of the top casing 13 is provided with a jack 131 matching the indicator light 52.
  • the jack is provided with a plurality of one-to-one correspondence with the indicator lights.
  • the inner wall of the top case is provided with a positioning rib 132 between the adjacent insertion holes.
  • the control substrate 51 is provided with a limiting hole 53 through which the positioning rib passes and is disposed between the adjacent indicator lamps 52.
  • the heating indicating device 5 further includes a fixing plate 54 for fixing the control substrate 51 in the accommodating chamber, and the fixing plate is fixed in the accommodating chamber by screws.
  • the fixing plate 54 is provided with a through hole 55 through which the screw passes, and the inner wall of the front end of the outer casing is provided with a fixing post 133, and the fixing post is provided with a fixing hole 134 matched with the screw.
  • the screw passes through the through hole 55 of the fixing plate 54 and is screwed into the fixing hole 134 of the top casing 13.
  • the control substrate 51 is located between the fixed plate and the outer casing, and the indicator lamp 52 is embedded in the insertion hole 131.
  • the fixing plate is fixedly connected to the top casing by screws, and the connection structure between the fixing plate and the outer casing is simple and the connection strength is high, which can well meet the installation requirements of the heating indicating device, and is also convenient for disassembling and replacing the heating indicating device.
  • the fixing plate 54 is provided with a positioning groove 56 in the circumferential direction, and the inner wall of the top housing is provided with a positioning protrusion 135 that cooperates with the positioning groove.
  • the positioning between the fixing plate and the top housing is realized by the cooperation of the positioning groove and the positioning protrusion, and the positioning structure is simple, and the installation efficiency and the installation precision are facilitated.
  • the motor 32 is electrically connected to the main control board 2, and the control module 21 for controlling the motor is disposed on the rear side of the main control board.
  • the bottom of the control module is provided with a protruding button post 22, and the button post is used for Adjust the speed of the motor.
  • the knob 6 is connected to the button post 22. When the knob is rotated, the knob drives the button post to move on the control module to adjust the rotation speed of the motor, thereby achieving the purpose of adjusting the hot air speed.
  • the purpose of shifting the motor to achieve gear shifting requires less installation space and less space for operation, which makes the overall structure of the heat gun more compact.
  • the control module 21 is provided with a slider 7 on which a slot 71 for inserting the button post 22 is provided, and the knob 6 is connected to the slider, thereby achieving the purpose of connecting to the button post.
  • the knob is rotated, the button column is driven to move on the control module to realize the purpose of shifting, and the linear motion required for adjusting the button post is converted into the rotation of the knob, so that the overall structure of the shifting mechanism is compact and easy to adjust.
  • the control module 21 is provided with a long-shaped sliding groove 23, and the slider is provided with a rib 72 matching the sliding groove and a rib 73 for limiting the position, and the slider passes through the rib and the sliding groove and the rib
  • the action limit is slidably mounted on the control module 21.
  • the slider 7 is L-shaped, including lateral portions and vertical portions perpendicular to each other, the slot 71 is disposed on the lateral portion, and the rib 72 is disposed on the inner wall of the top end of the vertical portion, and the rib 73 It is provided on the inner wall of the front end of the lateral portion.
  • the outer wall of the vertical portion of the slider is provided with a protrusion 74 extending outwardly from the control module 21, and the knob is provided with a transmission hole 61 matching the protrusion.
  • the knob is connected to the slider through the cooperation of the transmission hole and the protruding post.
  • the knob moves the slider back and forth on the control module through the cooperation of the transmission hole and the protruding post.
  • the knob 6 includes a scalloped button body 62 and a button cover 63 disposed at the curved edge of the button body.
  • the button cover is perpendicular to the button body, and the transmission hole 61 is disposed on the button plate.
  • a protruding block 64 is arranged on the outer wall of the button cover.
  • a plate 65 for displaying a gear position is fixed on the inner wall of the button cover 63.
  • the outer wall of the plate is provided with a gear mark 66.
  • the button cover plate is provided with a fitting groove 67 matching the gear mark.
  • the plate 65 is fixed on the inner wall of the button cover 63, and the gear mark 66 is embedded in the recessed groove 67, so that the user can know the working position of the motor, and at the same time, it is helpful to prompt the user to make reasonable adjustments during use.
  • an indicator light electrically connected to the main control board may be disposed in the gear mark. When the knob 6 drives the button post 22 to move to a certain gear position, the indicator light in the gear position corresponding to the gear position lights up, so that the user can know the working gear position of the motor more clearly.
  • the center of the button body 62 is provided with a connecting post 68 protruding from the control module 21, and a circular groove 69 is formed in the circumferential direction of the connecting post.
  • the inner wall of the rear end portion of the left casing 11 and the right casing 12 is provided with a hollow snap-in casing 16 which is parallel to the inner wall of the rear end portion of the left casing or the right casing.
  • a semicircular recess 17 is formed at the edge of the side. After the left and right housings are fixed together, the snap-on shells 16 on both sides are combined to form a snap-fit portion, and the two semi-circular recesses 17 are combined to form a mounting hole into which the connecting post 68 is inserted.
  • the knob is disposed in the outer casing through the cooperation of the connecting post and the mounting hole, and the connection structure between the knob and the outer casing is simple, the stability is good, and the internal structure of the whole machine is more compact.
  • the connecting post is inserted into the mounting hole, the latching shell 16 is embedded in the annular groove 69 at the circumferential edge of the groove 17, forming a limit fit to prevent the knob from axially jumping during the rotation process, thereby improving the connection between the knob and the outer casing. Stability, which in turn ensures the effectiveness of the adjustment through the knob.
  • the main control board 2 is further provided with a contact 24 for adjusting the temperature of the hot air discharged from the heat gun and a temperature display 25 for displaying the temperature.
  • the outer casing 1 is provided with a button 81 for engaging with the contact and a cover for the temperature display. External casing 82.
  • the rear side of the top case 13 is provided with a mounting hole 136 that cooperates with the temperature display screen 25, a button hole 137 for mounting the button 81, and a through groove 138 for the dial block 64 to extend out of the housing.
  • the button is arranged on the outer casing, and the user can adjust the hot air temperature of the heat gun by pressing the button according to the work requirement, thereby improving the versatility of the heat gun.
  • a display screen is also provided on the main control panel for displaying relevant temperature parameters, so that the user can know the working condition of the heat gun and further improve the versatility of the heat gun.
  • the main control board 2 is fixedly connected to the inner wall of the top casing 13 by screws, and the main control board is provided with two contacts 24, one for raising the hot air temperature and the other for lowering the hot air temperature.
  • the button 81 is provided with two, and a deformable connecting rib is arranged between the two buttons.
  • the cover 82 is provided with two limiting holes 83 for the button 81 to pass through.
  • the temperature detecting device 4 includes a detecting circuit board 41 electrically connected to the main control board 2 and an infrared detecting head 42 provided on the detecting circuit board.
  • a heat pipe 18 is fixed to the front end of the outer casing 1.
  • the heat generating component 36 is disposed in the hot air pipe, and the temperature detecting device is disposed behind the heat generating component.
  • the heat generating component 36 includes a bracket 361 and a heating wire wound around the bracket, and the hot air device 3 further includes an inner bracket 33, an outer bracket 34, and a positioning ring 35.
  • the fan 31 is disposed behind the heat generating component 36, and the motor 32 is disposed at the rear of the fan.
  • the inner bracket 33 is disposed outside the motor and the fan, and the rear end of the inner bracket is fixedly sleeved on the outside of the motor 32, and the fan 31 is rotatably disposed inside the front end of the inner bracket.
  • the outer support 34 is fixed in the receiving cavity of the outer casing 1 and is disposed outside the inner bracket.
  • the rear end of the outer support is fixedly connected to the inner bracket, and the front end of the outer bracket is connected to the rear of the hot air duct 18 through the positioning ring 35. At the end, the rear end of the bracket is inserted into the positioning ring.
  • the rear end of the inner bracket 33 is provided with a sleeve 331 matched with the motor 32.
  • the rear end of the inner bracket is fixed to the outside of the motor through the cooperation of the sleeve and the motor, and the fan 31 is rotated and disposed inside the front end of the inner bracket.
  • the rear end of the outer support 34 is provided with a card slot 341.
  • the outer wall of the inner bracket 33 is provided with a latching block 332 matched with the latching slot.
  • the rear end of the outer bracket is fixedly coupled to the inner bracket by the cooperation of the latching slot and the latching block.
  • the outer support 34 is connected to the top casing 13 by a snap structure.
  • the outer wall of the outer support is provided with a clamping protrusion 342.
  • the inner wall of the top casing is provided with a protrusion 139.
  • the protrusion is provided with a clamping protrusion.
  • the mating clamping groove 139a is fixed in the receiving cavity of the outer casing 1 by the engagement of the clamping protrusion and the clamping groove.
  • a plurality of support ribs for limiting the outer support are provided on the inner wall of the left casing and the inner wall of the right casing.
  • the positioning ring 35 is fixed to the front end of the outer support 34 by screws.
  • the rear end surface of the positioning ring is provided with a plurality of protruding connecting protrusions 351.
  • the connecting protrusions are provided with screw holes matched with the screws, and the front end of the outer support is circumferentially a recessed hole 343 is defined for the insertion of the connecting post.
  • the bottom wall of the recessed hole is provided with a connecting hole through which the screw passes.
  • the screw is screwed to the threaded hole of the connecting post from the rear end of the outer bearing through the connecting hole.
  • the positioning ring 35 is fixed by a plurality of connecting protrusions 351 and a plurality of recessed holes 343. The fixing method is simple and reliable.
  • a plurality of protruding positioning posts 344 are arranged in the circumferential direction of the front end surface of the outer support 34.
  • the positioning ring 35 is provided with a positioning hole 352 for inserting the positioning post in the circumferential direction of the positioning ring 35.
  • the rear end of the hot air pipe 18 is provided with an integrally formed positioning ring 181.
  • the positioning ring is uniformly provided with a plurality of latching holes 182 in the circumferential direction.
  • the front end surface of the positioning ring 35 is provided with a buckle 353 corresponding to the card hole in the circumferential direction.
  • the rear end of the hot air pipe is connected to the positioning ring through the cooperation of the card hole and the buckle.
  • the buckle 353 includes a connecting portion and a limiting portion, and the limiting portion cooperates with the surface of the positioning ring 181 to fix the axial direction of the hot air pipe 18, and more specifically, one end of the connecting portion is connected to the surface of the positioning ring 35.
  • the limiting portion is connected to the other end of the connecting portion and disposed parallel to the surface of the positioning ring 35.
  • the connecting portion and the limiting portion are integrally formed and have a " ⁇ " shape, so that The hot air pipe is well fixed, and the fixing method is simple, the fixing is reliable, the stability and reliability of the hot air pipe are ensured, and the processing and forming of the positioning buckle is facilitated, thereby facilitating the processing and forming of the positioning ring.
  • the outer wall of the rear end of the bracket 361 is provided with a plurality of limiting ribs 362.
  • the inner wall of the positioning ring 35 is provided with a limiting groove 354 for inserting the limiting rib.
  • the bracket is connected to the limiting limit of the limiting rib and the limiting groove. Locating ring.
  • the detecting circuit board 41 is fixed in the outer support 34 by screws, and the screws for connecting the outer support and the positioning ring pass through the detecting circuit board at the same time, thereby realizing the fixing of the detecting circuit board.
  • the bracket 361 is hollow, and a hollow communication tube 37 is disposed inside the bracket.
  • the hollow inner cavity of the communication tube forms a detecting passage 38.
  • the detecting circuit board 41 is disposed behind the connecting tube, and the infrared detecting head 42 is located in the axial projection plane of the detecting channel.
  • the axis of the detecting passage 38 is coincident with the axis of the hot air duct 18, so that hot air is blown from the hot air duct to heat the surface of the heated object, thereby causing a change in the infrared radiation energy of the surface of the heated object, and detecting
  • the channel is just facing the heated surface of the object to be heated, that is, the distance between the detection channel and the heated surface of the object to be heated is the shortest, so that the infrared radiation energy can enter the detection channel very well and quickly to be inspected by the infrared detection head.
  • Receiving, further improving the accuracy of the temperature detected by the temperature detecting device also improves the detection efficiency of the temperature detecting device, thereby further ensuring the safety and heating effect of the heat gun.
  • the front end of the hot air duct 18 is provided with a positioning bracket 183.
  • the front end of the connecting tube 37 abuts against the positioning bracket 183.
  • the rear end of the connecting tube abuts the detecting circuit board 41, and the infrared detecting head 42 is located at the detecting channel 38.
  • the axial center of the hot air duct 18, the axial center of the bracket 361, and the axial center of the communication tube 37 are coincident.
  • the front end of the outer casing 1 is further provided with a head sleeve 19 matched with the hot air duct.
  • the head sleeve is fixed to the front end of the outer casing by a snap fit, and the hot air duct passes through the head sleeve.
  • the power is turned on by the main switch 15, and the target temperature of the object to be heated is adjusted by the button 81.
  • the button post 22 is moved by the slider 7 on the control module 21 to achieve the purpose of adjusting the rotation speed of the motor 32, thereby achieving the purpose of adjusting the heat of the heat gun.
  • the heating wire works, the motor 32 drives the fan 31 to rotate, and the air heated by the heating wire is continuously discharged through the hot air pipe 18 to form a hot air flow.
  • the front end of the hot air duct is aligned with the object to be heated, and the hot air stream heats the object to be heated.
  • the infrared radiation energy generated by the heated object enters the detection channel 38 and is received by the infrared detecting head 42, thereby measuring the heating temperature of the heated object.
  • the temperature detecting means transmits the measured heating temperature to the main control board 2, and the temperature display 25 simultaneously displays the target temperature and the measured heating temperature.
  • the main control board compares the measured heating temperature with the set target temperature. When the measured heating temperature is higher or lower than the target temperature, the main control board controls the indication state of the indicator lamp 52 through the control substrate 51. Specifically, when the measured heating temperature is higher than the target temperature, the indicator light flashes from the front to the rear, indicating that the user is away from the object to be heated. When the measured temperature is lower than the target temperature, the indicator light flashes from the back to the front, indicating that the user is bringing the heat gun close to the object to be heated.
  • the heat gun provided in this embodiment adds a temperature detecting device and a heating indicating device to maintain an appropriate distance between the heat gun and the object to be heated, so that the object to be heated is in an appropriately heated state, and the heating temperature is not allowed. Knowing or uncontrollable causes the safety hazard of the heated object to melt or ignite, ensuring the heating effect and improving the safety of use.
  • the heating indicating device reminds the user to pay attention to the operation through the indicator light, and the indication is more obvious, which is convenient for effectively reminding the user to pay attention.
  • the rotation mode is used instead of the linear mode and the button mode to achieve the purpose of shifting, and the installation space and the operation space required are small, so that the overall structure of the heat gun can be more compact, and the body is easy to hold and use.
  • bracket in this embodiment may be a ceramic bracket or a mica sheet bracket.
  • top case in this embodiment can also be integrated with the left case or the right case.
  • the effective recognition distance of the infrared detecting head in this embodiment should be greater than the length of the detecting channel.
  • the fixing plate in this embodiment can also be fixed in the outer casing by other fixing methods, such as riveting, gluing and the like.
  • the heating temperature of the heat generating component and/or the rotational speed of the motor can be adjusted before heating, and the heating temperature of the heat generating component and/or the rotational speed of the motor can be adjusted during the heating process.
  • the axis of the detection channel can also be arranged parallel to the axis of the hot air duct.
  • each of the above components means that each member is closer to one end of the object to be heated when the heat gun is used, and the “rear end” of each member means that the members are farther away from the end and end of the object to be heated when the heat gun is used.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the second embodiment of the present invention is different from the first embodiment described above in that a capacitor is further disposed on the main control board 2.
  • the capacitor can supply power to the main control board 2 and the heating indicating device 5 for a short time.
  • the residual temperature of the heat generating component 36 is relatively high.
  • the main control board 2 commands the indicator light 52 to flash to remind the user to pay attention to avoid the user being burnt by the residual temperature of the heating component. Or freely place the heat hazard in the heat gun to improve the safety of use.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the third embodiment of the present invention is different from the first embodiment in that the detecting circuit board 41 is further provided with a laser head for positioning the temperature detecting device to detect the position.
  • the laser head can accurately locate and detect the specific position of the heated object, further ensuring the accuracy of the temperature detecting device, thereby better ensuring the heating effect of the heat gun on the heated object.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the fourth embodiment of the present invention is different from the first embodiment in that the inner wall of the detecting channel 38 is provided with a light reflecting layer.
  • the light reflecting layer is a reflective coating.
  • the infrared radiation energy generated by the heated object after being heated can be emitted to the infrared detection head through the reflective layer, so that the infrared detection head can receive more effective infrared radiation energy, thereby improving the accuracy of the temperature detection device to ensure the accuracy.
  • the reflective layer is a reflective coating applied to the inner wall of the detection channel, which not only facilitates the infrared detection head to receive external infrared radiation energy, but also facilitates the processing of the reflective layer, and can be processed only by coating, and is easy to implement.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the fifth embodiment of the present invention is different from the first embodiment in that the hollow inner space of the bracket 361 directly forms a detection channel, and the arrangement of the communication tube is omitted, and the structure can well meet the detection requirements.
  • a reflective layer may be disposed on the inner wall of the detection channel, and the reflective layer may be a reflective coating or an aluminum foil or fluorescent paper or electro-optical paper coated on the inner wall of the detection channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Coating Apparatus (AREA)

Abstract

一种热风枪，包括外壳（1）、主控制板（2）和热风装置（3），热风装置（3）包括发热组件（36）、风扇（31）和电机（32），外壳（1）上设有热风管（18），发热组件（36）设于热风管（18）内，发热组件（36）和电机（32）均电连于主控制板（2），外壳（1）内设有温度检测装置（4）和加热指示装置（5）；温度检测装置（4）包括检测电路板（41）和红外检测头（42），发热组件（36）上设有供红外检测头（42）接收外部红外辐射能量的检测通道（38）；加热指示装置（5）包括控制基板（51）和指示灯（52）。通过温度检测装置（4）和加热指示装置（5）的作用，可以使热风枪和被加热物体之间保持适当的距离，从而使被加热物体处于适当的被加热状态，避免因加热温度不可知或不可控导致被加热物体熔化或着火存在的安全隐患，保证加热效果的同时提高使用安全性。

Description

一种热风枪 技术领域
本实用新型涉及机械加热设备技术领域，尤其涉及一种热风枪。
背景技术
热风枪是一种用于加热空气后形成热气流的加热工具，具有多种使用功能，具体而言，热风枪可用于去除金属表面的旧漆、去除自粘性贴纸、加热塑料胶管使其弯曲、烘干潮湿的木头、加热使包装膜和包装管热收缩、除锈、加热使用于连接金属的聚乙烯物收缩及加热使焊接物软化等，还可以利用发热电阻丝的枪芯吹出的热气流对元件进行焊接或摘除。
现有的热风枪一般设置有温度显示器用于显示热风枪吹出气流的热风温度，方便用户了解热风枪的工作情况。但是，现有热风枪上的温度显示器不能有效反应被加热物体的温度。当热风枪与被加热物体之间的距离较大时，被加热物体的温度较低，加热效果差、效率低。当热风枪与被加热物体之间的距离很小时，被加热物体的温度较高，可能会导致被加热物体熔化、引起火灾或出现其它物理/化学变化，操作安全性低。
另外，现有热风枪一般采用直线式换挡结构或按键式换挡结构，当风力挡位设置较多时，直线式换挡结构的移动行程长，按键式换挡结构所需的预装范围大，热风枪整体不够紧凑，体积有所增大，不便于操作、使用。
再者，现有热风枪内的部件之间一般通过螺钉实现固定连接，组装耗材多，且组装时需要借助其他工具，组装不便，生产效率低，不能很好的满足现代化的生产需求。另外，通过螺钉实现部件之间的固定连接时，存在螺钉漏拧或螺钉未完全拧紧的缺陷，如此会导致各部件之间的固定不可靠，影响热风枪的正常使用。
发明内容
本实用新型的目的在于提供能根据被加热物体的温度提示用户注意操作且机体内各部件之间连接牢靠的热风枪。
为了达到上述目的，本实用新型采用如下技术方案：一种热风枪，包括外壳，外壳内设有主控制板和热风装置，热风装置包括发热组件、风扇和用于驱动风扇转动的电机，外壳的前端设有用于排出热风的热风管，发热组件设于热风管内，发热组件和电机均电连于主控制板，其特征在于，所述外壳内还设有温度检测装置和加热指示装置，所述温度检测装置包括电连于主控制板的检测电路板和设于检测电路板上的红外检测头，发热组件上设有供红外检测头接收外部红外辐射能量的检测通道，所述加热指示装置包括电连于主控制板的控制基板和设于控制基板上的指示灯，所述发热组件包括中空的支架和绕设于支架上的发热丝，支架内设有绝缘隔热的连通管，检测通道设于连通管上，红外检测头位于检测通道的轴向投影面内。
进一步的，所述指示灯设有多个，多个指示灯沿控制基板的长度方向均匀间隔设置，外壳上设有多个与指示灯匹配的插孔。
进一步的，所述主控制板上设有电容器。
进一步的，所述检测电路板上设有用于定位温度检测装置检测位置的激光头，激光头位于检测通道的轴向投影面内。
进一步的，所述主控制板上设有用于控制电机的控制模块，控制模块上设有钮柱，外壳内转动设有连接于钮柱的旋钮，旋钮转动时带动钮柱在控制模块上移动实现调节电机的转速。
进一步的，所述控制模块上设有滑块，滑块上设有供钮柱插入的槽孔，旋钮连接于滑块。
进一步的，所述滑块在背向控制模块的一侧设有凸柱，旋钮上设有供凸柱插入的传动孔，旋钮通过传动孔和凸柱的配合连接于滑块。
进一步的，所述热风装置还包括用于将风扇连接于电机的内支架和设于内支架外部的外支座，外支座设于热风管的后方，外支座和热风管之间设有用于连接的定位环，定位环的前端部沿周向均匀设有若干卡扣，热风管的后端部设有定位圈，定位圈沿周向均匀设有与卡扣匹配的卡孔，热风管后端通过卡孔和卡扣的配合连接于定位环。
进一步的，所述内支架的外壁上设有若干卡块，外支座的后端部设有与卡块匹配的卡槽，外支座的后端通过卡槽和卡块的配合连接于内支架；所述外支座的外壁上设有卡紧凸起，外壳的内壁上设有与卡紧凸起匹配的卡紧槽，外支座通过卡紧凸起和卡紧槽的配合连接于外壳。
进一步的，所述卡扣包括连接部和限位部，限位部与定位圈的表面配合以将热风管的轴向固定。
进一步的，所述连接部与限位部一体成型且呈“┌”形。
进一步的，所述定位环的后端面设有若干连接凸柱，外支座的前端面设有若干凹孔，定位环通过若干连接凸柱与若干凹孔的插接配合固定在一起。
进一步的，所述检测通道的内壁设有反光层。
进一步的，所述反光层为涂覆于检测通道内壁的反光镀层；或者，所述反光层为包覆于检测通道内壁的铝箔纸或锡箔纸或荧光纸或电光纸。
进一步的，所述外壳上设有用于显示温度检测装置检测出的温度的温度显示屏，温度显示屏与温度检测装置电连接。
采用上述技术方案后，本实用新型具有如下优点：
1、本实用新型中，在外壳内增设了温度检测装置和加热指示装置，通过红 外检测头可以准确测得被加热物体的温度，检测电路板将测得的温度传送给主控制板，主控制板将测得的温度与预设值进行对比，当测得的温度高于或低于预设值时，主控制板通过控制基板控制指示灯的指示状态，提醒用户注意操作。如此，可以使热风枪和被加热物体之间保持适当的距离，从而使被加热物体处于适当的被加热状态，避免因加热温度不可知或不可控导致被加热物体熔化或着火存在的安全隐患，保证加热效果的同时提高使用安全性。加热指示装置通过指示灯提醒用户注意操作，指示较为明显，便于有效提醒用户予以注意；同时，发热组件的支架内设置绝缘隔热的连通管，检测通道设于连通管上。在连通管的隔离作用下，发热组件的热量不会通过连通管传递至检测通道内，避免发热组件的热量对红外检测头的检测造成影响，保证温度检测装置检测被加热物体温度的准确性。由于连通管绝缘，有效避免发热丝因接触于连通管导致工作过程中出现漏电的情况，提高热风枪的使用安全性。红外检测头位于检测通道的轴向投影面内，被加热物体的红外辐射能量经过检测通道后可直接、充分地被红外检测头接收，进一步保证温度检测装置检测被加热物体温度的准确性。
2、指示灯设置多个，多个指示灯沿控制基板的长度方向均匀间隔设置。当测得的被加热物体的温度高于预设值时，指示灯自前方向后方依次闪亮，指示用户远离被加热物体。当测得的被加热物体的温度低于预设值时，指示灯自后方向前方依次闪亮，指示用户靠近被加热物体。如此，可以进一步提高加热指示装置在工作过程中对用户的指示作用，便于用户准确操作。
3、主控制板上设置电容器，切断电源后，电容器可以向主控制板和加热指示装置进行短时供电。热风机刚断电时，发热组件的余温较高，当发热组件的余温超出一定范围时，主控制板命令指示灯跳闪提醒用户注意，避免用户被发热组件的余温灼伤或随意放置热风枪存在的安全隐患，进一步提高使用安全性。
4、检测电路板上设置激光头，激光头位于检测通道的轴向投影面内，通过激光头可以准确定位检测被加热物体的具体位置，进一步保证温度检测装置检测时的准确性，从而更好的保证热风枪对被加热物体的加热效果。
5、主控制板上设置用于控制电机的控制模块，控制模块上设置钮柱，外壳内转动设置连接于钮柱的旋钮。旋钮转动时，带动钮柱在控制模块上移动，调节电机的转速，从而实现调节排出热风风速的目的。采用转动方式代替直线方式和按键方式实现换挡的目的，所需占据的安装空间和操作空间较小，可以使热风枪整体的结构更加紧凑，使机体便于持拿、使用。
6、控制模块上设置滑块，钮柱插设于槽孔内，旋钮连接于滑块，从而实现连接于钮柱的目的。转动旋钮时，通过滑块带动钮柱在控制模块上移动，实现换挡的目的。通过滑块的作用，将调节时钮柱所需的直线运动转变为旋钮的转动，使换挡机构整体的结构紧凑、便于调节。
7、滑块上设置凸柱，旋钮上设置传动孔，旋钮通过传动孔和凸柱的配合带动滑块在控制模块上来回移动，旋钮和滑块之间传动配合的结构简单、紧凑，传动有效，使整机的内部结构紧凑。
8、外支座和热风管之间通过定位环实现连接，定位环和热风管的后端部之间通过卡扣和卡孔的配合实现连接。定位环和热风管之间的连接结构简单，能同时实现热风管的轴向定位和周向定位，组装后两者之间的连接较为牢靠，不易脱落。另外，组装热风管和定位环时无需借用辅助工具，仅通过插接旋转动作即能实现连接，组装效率高，且便于在维修时进行拆装。
9、外支座和内支架之间通过卡槽和卡块的配合实现连接，外支座和外壳之间通过卡紧凸起和卡紧槽的配合实现连接，各部件之间的连接结构简单，连接强度能很好地满足安装要求，便于进行拆装，且拆装时无需借用辅助工具。
10、卡扣包括连接部和限位部，在热风管与定位环插接配合到位，再旋转热风管，使得定位圈的表面与限位部配合从而将热风管的轴向固定，这样既能很好的将热风管固定，且固定方式简单，固定可靠。
11、通过将连接部与限位部一体成型且呈“┌”形，这样既便于卡扣的加工成型，且卡扣的对热风管的固定效果好，使得热风管固定可靠，以保证热风管工作时的稳定性和可靠性。
12、定位环的后端面设有若干连接凸柱，外支座的前端面设有若干凹孔，这样定位环通过若干连接凸柱与若干凹孔的插接配合固定在一起，此种固定方式简单、可靠。
13、通过在检测通道的内壁设置反光层，这样被加热物体在被加热后产生的红外辐射能量可通过反光层发射至红外检测头，从而使得红外检测头能接收到更多有效的红外辐射能量，进而提升温度检测装置检测的准确性，以保证热风枪工作的可靠性。
14、反光层为涂覆于检测通道内壁的反光镀层，这样既便于红外检测头接收外部红外辐射能量，又方便反光层的加工，仅通过涂覆即可，加工简单，易实现；或者，反光层为包覆于检测通道内壁的铝箔纸或锡箔纸或荧光纸或电光纸，这样使得红外检测头能更好的接收外部红外辐射能量，从而保证检测出的温度的准确性，且反光层为铝箔纸或锡箔纸或荧光纸或电光纸，便于损坏或长时间使用后效果不好后的更换，且成本低。
15、通过在外壳上设置温度显示屏，且温度显示屏与温度检测装置电连接，这样温度检测装置检测出的温度能清楚明了的显示在显示屏上，便于用户使用热风枪时观察，提升用户操作时的便利性，很好的提升了用户使用满意度。
附图说明
下面结合附图对本实用新型作进一步说明：
图1为本发明实施例一热风枪的内部结构示意图；
图2为本发明实施例一热风枪中顶壳体和热风装置的结构示意图；
图3为本发明实施例一热风枪中顶壳体的立体图；
图4为本发明实施例一热风枪中加热指示装置的立体图；
图5为本发明实施例一热风枪中主控制板的结构示意图；
图6为本发明实施例一热风枪中旋钮的立体图；
图7为本发明实施例一热风枪中旋钮的侧视图；
图8为本发明实施例一热风枪中外壳内部的局部示意图；
图9为本发明实施例一热风枪中热风装置的爆炸视图。
图中所标各部件名称如下：
1-外壳，11-左壳体，12-右壳体，13-顶壳体，131-插孔，132-定位筋，133-固定柱，134-固定孔，135-定位凸起，136-安装孔，137-按键孔，138-通槽，139-凸块，139a-卡紧槽，14-手柄壳体，15-主开关，16-卡接壳，17-凹槽，18-热风管，19-机头套，2-主控制板，21-控制模块，22-钮柱，23-滑槽，24-触点，25-温度显示屏，3-热风装置，31-风扇，32-电机，33-内支架，331-套筒，332-卡块，34-外支座，341-卡槽，342-卡紧凸起，343-凹孔，344-定位柱，35-定位环，351-连接凸柱，352-定位孔，353-卡扣，354-限位凹槽，36-发热组件，361-支架，362-限位筋，37-连通管，38-检测通道，4-温度检测装置，41-检测电路板，42-红外检测头，5-加热指示装置，51-控制基板，52-指示灯，53-限位孔，54-固定板，55-通孔，56-定位槽，6-旋钮，61-传动孔，62-钮板主体，63-钮盖板，64-拨块，65-贴板，66-挡位标记，67-嵌槽，68-连接柱，69-环形槽，7-滑块，71-槽孔，72-凸条，73-凸筋，74-凸柱，81-按键，82-罩壳，83-限位孔。
具体实施方式
下面结合附图和具体实施例对本发明作进一步说明。需要理解的是，下述的“上”、“下”、“左”、“右”、“纵向”、“横向”、“内”、“外”、“竖直”、“水平”、“顶”、“底”等指示方位或位置关系的词语仅基于附图所示的方位或位置关系，仅为了便于描述本发明和简化描述，而不是指示或暗示所指的装置/元件必须具有特定的方位或以特定的方位构造和操作，因此不能理解为对本发明的限制。
实施例一：
如图1至图9所示，本发明实施例一提供的热风枪，包括外壳1，外壳内设有主控制板2、热风装置3、温度检测装置4、加热指示装置5和旋钮6。外壳1包括固定在一起的左壳体11、右壳体12和顶壳体13，左壳体的下部和右壳体的下部均设有一体成型的手柄壳体14，两侧的手柄壳体组合形成手柄，手柄上设有用于接通或切断电源的主开关15，左壳体和右壳体上设有进风孔。左壳体的上部、右壳体的上部和顶壳体组合形成一个容纳腔，主控制板2、热风装置3、温度检测装置4、加热指示装置5和旋钮6均装设于该容纳腔内，热风装置3包括发热组件36、风扇31和用于驱动风扇转动的电机32。
如图2、图3、图4所示，加热指示装置5包括控制基板51和设于控制基板上的指示灯52，控制基板电连于主控制板2，指示灯设有多个，多个指示灯沿控制基板的长度方向均匀间隔设置。本实施例中，控制基板51的长度方向与热风枪的排风方向一致。
顶壳体13的前端开设有与指示灯52匹配的插孔131，插孔设有多个且与指示灯一一对应。顶壳体的内壁上设有位于相邻插孔之间的定位筋132，控制基板51上设有供定位筋穿过且设于相邻指示灯52之间的限位孔53。
加热指示装置5还包括用于将控制基板51固定于容纳腔内的固定板54，固 定板通过螺钉固定于容纳腔内。具体来说，固定板54上设有供螺钉穿过的通孔55，外壳前端的内壁上设有固定柱133，固定柱上设有与螺钉匹配的固定孔134。螺钉穿过固定板54上通孔55后拧紧于顶壳体13上的固定孔134中，控制基板51位于固定板和外壳之间，指示灯52嵌装于插孔131内。固定板通过螺钉固定连接于顶壳体，固定板与外壳之间的连接结构简单且连接强度高，能很好的满足加热指示装置的安装要求，也便于拆装、更换加热指示装置。
为了实现顶壳体13和固定板54之间的定位，固定板54的周向开设有定位槽56，顶壳体的内壁上设置有与定位槽配合的定位凸起135。通过定位槽和定位凸起的配合实现固定板与顶壳体之间的定位，定位结构简单，便于提高安装效率和安装精度。
如图5所示，电机32电连于主控制板2，主控制板的后侧上设有用于控制电机的控制模块21，控制模块的底部设有凸出的钮柱22，钮柱用于调节电机的转速。旋钮6连接于钮柱22，转动旋钮时，旋钮带动钮柱在控制模块上移动，调节电机的转速，从而实现调节热风风速的目的。采用转动方式实现电机换挡的目的，所需占据的安装空间和操作空间较小，可以使热风枪整体的结构更加紧凑。
控制模块21上设有滑块7，滑块上设有供钮柱22插入的槽孔71，旋钮6连接于滑块，从而实现连接于钮柱的目的。旋钮转动时，通过滑块带动钮柱在控制模块上移动，实现换挡的目的，将调节时钮柱所需的直线运动转变为旋钮的转动，使换挡机构整体的结构紧凑、便于调节。
控制模块21上设有长条状的滑槽23，滑块上设有与滑槽匹配的凸条72和用于限位的凸筋73，滑块通过凸条与滑槽的配合和凸筋的作用限位滑动安装于控制模块上21。具体到本实施例中，滑块7呈L形，包括相互垂直的横向部和 竖向部，槽孔71设于横向部上，凸条72设于竖向部顶端的内壁上，凸筋73设于横向部前端的内壁上。
为了实现旋钮6和滑块7之间的传动连接，滑块竖向部的外壁上设有背向控制模块21向外凸出的凸柱74，旋钮上设有与凸柱匹配的传动孔61，旋钮通过传动孔和凸柱的配合连接于滑块。旋钮通过传动孔和凸柱的配合带动滑块在控制模块上来回移动，旋钮和滑块之间传动配合的结构简单、紧凑，传动有效，能使热风枪的内部结构更加紧凑。
如图6、图7所示，旋钮6包括扇形的钮板主体62和设于钮板主体弧形边缘处的钮盖板63，钮盖板垂直于钮板主体，传动孔61设于钮板主体上，钮盖板的外壁上设有凸出的拨块64。
钮盖板63的内壁上固定有用于显示挡位的贴板65，贴板的外壁上设有挡位标记66，钮盖板上设有与挡位标记匹配的嵌槽67。贴板65固定于钮盖板63的内壁上，挡位标记66嵌装于嵌槽67内，便于用户知悉电机的工作挡位，同时有利于提示用户在使用时作出合理的调节。进一步的，可以在挡位标记内设置电连于主控制板的标示灯。当旋钮6带动钮柱22运动至某一挡位时，与该挡位对应的挡位标记内的指示灯亮起，便于用户更加清楚的获知电机的工作挡位。
钮板主体62的圆心处设有背向控制模块21凸出的连接柱68，连接柱的周向开设有一圈环形槽69。如图8所示，左壳体11和右壳体12后端部的内壁上均设有中空的卡接壳16，卡接壳在平行于左壳体或右壳体后端部内壁的一侧的边缘处开设有半圆形的凹槽17。左壳体和右壳体固定在一起后，两侧的卡接壳16组合形成卡接部，两个半圆形的凹槽17组合形成供连接柱68插入的安装孔。旋钮通过连接柱和安装孔的配合转动设于外壳内，旋钮和外壳之间的连接结构简单，稳定性好，且能使整机的内部结构更加紧凑。连接柱插入安装孔后，卡 接壳16位于凹槽17周向的边缘处嵌于环形槽69内，形成限位配合，避免旋钮在转动过程发生轴向跳动，提高旋钮和外壳之间的连接稳定性，进而保证通过旋钮进行调节的操作有效性。
主控制板2上还设有用于调节热风枪排出的热风温度的触点24和用于显示温度的温度显示屏25，外壳1上设有与触点配合的按键81和罩设于温度显示屏外部的罩壳82。顶壳体13的后侧依次设有与温度显示屏25配合的安装孔136、用于装设按键81的按键孔137和用于供拨块64伸出外壳的通槽138。外壳上设置按键，用户可以根据工作需要通过按键调节热风枪的热风温度，提高热风枪的通用性。主控制板上还设置显示屏用于显示相关的温度参数，便于用户知悉热风枪的工作情况，进一步提高热风枪的通用性。
本实施例中，主控制板2通过螺钉固定连接于顶壳体13的内壁，主控制板上设有两个触点24，一个用于调高热风温度，另一个用于调低热风温度，相应的，按键81设有两个，两个按键之间设有可变形的连接筋。相应的，罩盖82上设有两个用于供按键81穿过的限位孔83。
如图9所示，温度检测装置4包括电连于主控制板2的检测电路板41和设于检测电路板上的红外检测头42。外壳1的前端固定有热风管18，发热组件36设于热风管内，温度检测装置设于发热组件的后方。
发热组件36包括支架361和绕设于支架上的发热丝，热风装置3还包括内支架33、外支座34和定位环35。风扇31设于发热组件36的后方，电机32设于风扇的后方。内支架33设于电机和风扇的外部，内支架的后端固定套设于电机32的外部，风扇31转动设于内支架前端的内部。外支座34固定于外壳1的容纳腔内，且设于内支架的外部，外支座的后端固定连接于内支架，外支座的前端通过定位环35连接于热风管18的后端部，支架的后端部插设于定位环内。
本实施例中，内支架33的后端设有与电机32匹配的套筒331，内支架的后端通过套筒与电机的配合固定于电机的外部，风扇31转动设于内支架前端的内部。外支座34的后端设有卡槽341，内支架33的外壁上设有与卡槽匹配的卡块332，外支座的后端通过卡槽与卡块的配合固定连接于内支架。外支座34通过卡扣结构连接于顶壳体13，外支座的外壁上设有卡紧凸起342，顶壳体的内壁上设有凸块139，凸块上设有与卡紧凸起配合的卡紧槽139a，外支座通过卡紧凸起和卡紧槽的配合固定于外壳1的容纳腔内。为了更好的固定外支座，左壳体的内壁和右壳体的内壁上设有若干用于限位外支座的支撑筋。
定位环35通过螺钉固定于外支座34的前端，定位环的后端面设有若干凸出的连接凸柱351，连接凸柱上设有与螺钉匹配的螺纹孔，外支座前端的周向上设有供连接凸柱插入的凹孔343，凹孔的底壁上设有供螺钉穿过的连接孔，螺钉自外支座的后端穿过连接孔后拧紧于连接凸柱上的螺纹孔中，且定位环35通过若干连接凸柱351与若干凹孔343的插接配合固定在一起，此种固定方式简单、可靠。为了实现外支座和定位环之间的安装定位，外支座34前端面的周向上设有若干凸出的定位柱344，定位环35的周向上设有供定位柱插入的定位孔352。
热风管18的后端设有一体成型的定位圈181，定位圈沿周向均匀设有多个卡孔182，定位环35的前端面上沿周向设有与卡孔一一对应的卡扣353，热风管的后端通过卡孔和卡扣的配合连接于定位环。具体的，卡扣353包括连接部和限位部，限位部与定位圈181的表面配合以将热风管18的轴向固定，更具体的，连接部的一端与定位环35的表面连接且垂直于定位环35的表面设置，限位部与连接部的另一端连接且与定位环35的表面平行设置，同时，连接部与限位部一体成型且呈“┌”形，这样既能很好的将热风管固定，且固定方式简单，固定可靠，以保证热风管工作时的稳定性和可靠性，还便于定位扣的加工成型， 进而便于定位环的加工加工成型。支架361后端的外壁上设有若干限位筋362，定位环35的内壁上设有供限位筋插入的限位凹槽354，支架通过限位筋与限位凹槽的配合限位连接于定位环。
本实施例中，检测电路板41通过螺钉固定于外支座34内，用于连接外支座和定位环的螺钉同时穿过检测电路板，从而实现检测电路板的固定。检测电路板和外支座的内壁之间有空隙，以便风扇转动形成的吹气气流能顺利吹送至发热组件，从而形成热风气流。
支架361中空，支架内部设有中空的连通管37，连通管的中空内腔形成检测通道38，检测电路板41设于连通管的后方，红外检测头42位于检测通道的轴向投影面内。
且，检测通道38的轴线与热风管18的轴线重合设置，这样在热风从热风管吹出以对被加热物体的表面进行加热，从而导致被加热物体表面的红外辐射能量发生变化，而检测通道刚好正对着被加热物体的被加热表面，即检测通道与被加热物体的被加热表面之间的距离最短，使得红外辐射能量可很好且快速的进入检测通道内以被红外检测头所接收，进一步的提升温度检测装置检测出的温度的准确性，也提升了温度检测装置的检测效率，从而进一步保证热风枪的使用安全性及加热效果。
本实施例中，热风管18的前端设有定位支架183，连通管37的前端抵于定位支架183上，连通管的后端抵于检测电路板41上，红外检测头42位于检测通道38内。进一步的，热风管18的轴心、支架361的轴心和连通管37的轴心重合。为了提高热风管18的稳定性，外壳1的前端还设有与热风管匹配的机头套19，机头套通过卡接配合固定于外壳的前端，热风管穿过机头套。
使用时，通过主开关15接通电源，通过按键81调节被加热物体的目标温 度。转动旋钮6时，通过滑块7带动钮柱22在控制模块21上移动，实现调节电机32转速的目的，从而实现调节热风枪排出风力的目的。机体启动后，发热丝工作，电机32带动风扇31转动，经发热丝加热后的空气通过热风管18不断排出，形成热风气流。将热风管的前端对准被加热物体，热风气流对被加热物体进行加热。
热风枪工作时，被加热物体产生的红外辐射能量进入检测通道38内并被红外检测头42接收，从而测得被加热物体的加热温度。温度检测装置将测得的加热温度传动给主控制板2，温度显示屏25上同时显示目标温度和测得的加热温度。主控制板将测得的加热温度与设定的目标温度进行对比，当测得的加热温度高于或低于目标温度时，主控制板通过控制基板51控制指示灯52的指示状态。具体来说，当测得的加热温度高于目标温度时，指示灯自前方向后方依次闪亮，指示用户将热风枪远离被加热物体。当测得的温度低于目标温度时，指示灯自后方向前方依次闪亮，指示用户将热风枪靠近被加热物体。
本实施例提供的热风枪，增设了温度检测装置和加热指示装置，能使热风枪和被加热物体之间保持适当的距离，从而使被加热物体处于适当的被加热状态，避免因加热温度不可知或不可控导致被加热物体熔化或着火存在的安全隐患，保证加热效果的同时提高使用安全性。加热指示装置通过指示灯提醒用户注意操作，指示较为明显，便于有效提醒用户予以注意。采用转动方式代替直线方式和按键方式实现换挡的目的，所需占据的安装空间和操作空间较小，可以使热风枪整体的结构更加紧凑，使机体便于持拿、使用。
可以理解的是，本实施例中的支架可以为陶瓷支架，也可以为云母片支架。
可以理解的是，本实施例中的顶壳体也可以与左壳体或右壳体设为一体。
可以理解的是，本实施例中红外检测头的有效识别距离应大于检测通道的 长度。
可以理解的是，本实施例中的固定板也可以通过其他固定方式固定于外壳内，如铆接、胶粘等方式。
可以理解的是，使用本实施例的热风枪时，可以在加热前调节发热组件的加热温度和/或电机的转速，也可以在加热过程中调节发热组件的加热温度和/或电机的转速。
可以理解的是，检测通道的轴线也可以与热风管的轴线平行设置。
上述各部件的“前端”指热风枪使用时各部件较为靠近被加热物体的一端，各部件的“后端”指热风枪使用时各部件较为远离被加热物体的一端和端部。
实施例二：
本发明实施例二与上述实施例一的区别之处在于，主控制板2上还设置有电容器。热风机切断电源后，电容器可以向主控制板2和加热指示装置5进行短时供电。热风机刚断电时，发热组件36的余温较高，当发热组件的余温超出一定范围时，主控制板2命令指示灯52跳闪提醒用户注意，避免用户被发热组件的余温灼伤或随意放置热风枪存在的安全隐患，提高使用安全性。
实施例三：
本发明实施例三与上述实施例一的区别之处在于，检测电路板41上还设有用于定位温度检测装置检测位置的激光头。通过激光头可以准确定位检测被加热物体的具体位置，进一步保证温度检测装置检测时的准确性，从而更好的保证热风枪对被加热物体的加热效果。
实施例四：
本发明实施例四与上述实施例一的区别之处在于，检测通道38的内壁设有反光层，具体来说，反光层为反光镀层。被加热物体在被加热后产生的红外辐 射能量可通过反光层发射至红外检测头，从而使得红外检测头能接收到更多有效的红外辐射能量，进而提升温度检测装置检测的准确性，以保证热风枪工作的可靠性。反光层为涂覆于检测通道内壁的反光镀层，既便于红外检测头接收外部红外辐射能量，又方便反光层的加工，仅通过涂覆即可，加工简单，易实现。
实施例五：
本发明实施例五与上述实施例一的区别之处在于，支架361中空的内部空间直接形成检测通道，省略连通管的设置，此种结构也能很好的满足检测要求。
为了提高检测准确性，可以在检测通道的内壁设置反光层，反光层可以是反光镀层也可以是包覆于检测通道内壁的铝箔纸或荧光纸或电光纸。
除上述优选实施例外，本实用新型还有其他的实施方式，本领域技术人员可以根据本实用新型作出各种改变和变形，只要不脱离本实用新型的精神，均应属于本实用新型所附权利要求所定义的范围。

Claims (15)

  1. 一种热风枪，包括外壳，外壳内设有主控制板和热风装置，热风装置包括发热组件、风扇和用于驱动风扇转动的电机，外壳的前端设有用于排出热风的热风管，发热组件设于热风管内，发热组件和电机均电连于主控制板，其特征在于，所述外壳内还设有温度检测装置和加热指示装置；所述温度检测装置包括电连于主控制板的检测电路板和设于检测电路板上的红外检测头，发热组件上设有供红外检测头接收外部红外辐射能量的检测通道；所述加热指示装置包括电连于主控制板的控制基板和设于控制基板上的指示灯，所述发热组件包括中空的支架和绕设于支架上的发热丝，支架内设有绝缘隔热的连通管，检测通道设于连通管上，红外检测头位于检测通道的轴向投影面内。
  2. 根据权利要求1所述的热风枪，其特征在于，所述指示灯设有多个，多个指示灯沿控制基板的长度方向均匀间隔设置，外壳上设有多个与指示灯匹配的插孔。
  3. 根据权利要求1所述的热风枪，其特征在于，所述主控制板上设有电容器。
  4. 根据权利要求1所述的热风枪，其特征在于，所述检测电路板上设有用于定位温度检测装置检测位置的激光头，激光头位于检测通道的轴向投影面内。
  5. 根据权利要求1所述的热风枪，其特征在于，所述主控制板上设有用于控制电机的控制模块，控制模块上设有钮柱，外壳内转动设有连接于钮柱的旋钮，旋钮转动时带动钮柱在控制模块上移动实现调节电机的转速。
  6. 根据权利要求5所述的热风枪，其特征在于，所述控制模块上设有滑块，滑块上设有供钮柱插入的槽孔，旋钮连接于滑块。
  7. 根据权利要求6所述的热风枪，其特征在于，所述滑块在背向控制模块的一侧设有凸柱，旋钮上设有供凸柱插入的传动孔，旋钮通过传动孔和凸柱的配合连接于滑块。
  8. 根据权利要求1所述的热风枪，其特征在于，所述热风装置还包括用于将风扇连接于电机的内支架和设于内支架外部的外支座，外支座设于热风管的后方，外支座和热风管之间设有用于连接的定位环，定位环的前端部沿周向均匀设有若干卡扣，热风管的后端部设有定位圈，定位圈沿周向均匀设有与卡扣匹配的卡孔，热风管后端通过卡孔和卡扣的配合连接于定位环。
  9. 根据权利要求8所述的热风枪，其特征在于，所述内支架的外壁上设有若干卡块，外支座的后端部设有与卡块匹配的卡槽，外支座的后端通过卡槽和卡块的配合连接于内支架；所述外支座的外壁上设有卡紧凸起，外壳的内壁上设有与卡紧凸起匹配的卡紧槽，外支座通过卡紧凸起和卡紧槽的配合连接于外壳。
  10. 根据权利要求8所述的热风枪，其特征在于，所述卡扣包括连接部和限位部，限位部与定位圈的表面配合以将热风管的轴向固定。
  11. 根据权利要求10所述的热风枪，其特征在于，所述连接部与限位部一体成型且呈“┌”形。
  12. 根据权利要求8所述的热风枪，其特征在于，所述定位环的后端面设有若干连接凸柱，外支座的前端面设有若干凹孔，定位环通过若干连接凸柱与若干凹孔的插接配合固定在一起。
  13. 根据权利要求1所述的热风枪，其特征在于，所述检测通道的内壁设有反光层。
  14. 根据权利要求13所述的热风枪，其特征在于，所述反光层为涂覆于检测通道内壁的反光镀层；或者，所述反光层为包覆于检测通道内壁的铝箔纸或锡箔纸或荧光纸或电光纸。
  15. 根据权利要求1所述的热风枪，其特征在于，所述外壳上设有用于显示温度 检测装置检测出的温度的温度显示屏，温度显示屏与温度检测装置电连接。
PCT/CN2018/101315 2017-08-21 2018-08-20 一种热风枪 WO2019037681A1 (zh)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201721048562.9 2017-08-21
CN201721048562.9U CN207180014U (zh) 2017-08-21 2017-08-21 一种安装方便的热风枪
CN201710719664.7A CN107655206B (zh) 2017-08-21 2017-08-21 一种可检测温度的热风枪
CN201710719664.7 2017-08-21
CN201710718508.9A CN107388579B (zh) 2017-08-21 2017-08-21 热风枪
CN201710718508.9 2017-08-21

Publications (1)

Publication Number Publication Date
WO2019037681A1 true WO2019037681A1 (zh) 2019-02-28

Family

ID=65438360

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/101315 WO2019037681A1 (zh) 2017-08-21 2018-08-20 一种热风枪

Country Status (1)

Country Link
WO (1) WO2019037681A1 (zh)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003552A1 (en) * 1983-03-07 1984-09-13 Skilten Electronics Heated gas blower device
US5349161A (en) * 1992-09-30 1994-09-20 Master Appliance Corporation Heat gun with improved temperature regulator
CN101026906A (zh) * 2006-02-21 2007-08-29 常州市英杰工具有限公司 热风枪的电路装置及其工作方法
CN103162419A (zh) * 2011-12-19 2013-06-19 西安广融电气有限公司 新型热风枪的电路装置
CN107388579A (zh) * 2017-08-21 2017-11-24 浙江普莱得电器有限公司 热风枪
CN107655206A (zh) * 2017-08-21 2018-02-02 浙江普莱得电器有限公司 一种可检测温度的热风枪
CN207180018U (zh) * 2017-08-21 2018-04-03 浙江普莱得电器有限公司 热风枪
CN207180014U (zh) * 2017-08-21 2018-04-03 浙江普莱得电器有限公司 一种安装方便的热风枪
CN207180015U (zh) * 2017-08-21 2018-04-03 浙江普莱得电器有限公司 一种热风枪

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984003552A1 (en) * 1983-03-07 1984-09-13 Skilten Electronics Heated gas blower device
US5349161A (en) * 1992-09-30 1994-09-20 Master Appliance Corporation Heat gun with improved temperature regulator
CN101026906A (zh) * 2006-02-21 2007-08-29 常州市英杰工具有限公司 热风枪的电路装置及其工作方法
CN103162419A (zh) * 2011-12-19 2013-06-19 西安广融电气有限公司 新型热风枪的电路装置
CN107388579A (zh) * 2017-08-21 2017-11-24 浙江普莱得电器有限公司 热风枪
CN107655206A (zh) * 2017-08-21 2018-02-02 浙江普莱得电器有限公司 一种可检测温度的热风枪
CN207180018U (zh) * 2017-08-21 2018-04-03 浙江普莱得电器有限公司 热风枪
CN207180014U (zh) * 2017-08-21 2018-04-03 浙江普莱得电器有限公司 一种安装方便的热风枪
CN207180015U (zh) * 2017-08-21 2018-04-03 浙江普莱得电器有限公司 一种热风枪

Similar Documents

Publication Publication Date Title
CN107388579B (zh) 热风枪
KR102695817B1 (ko) 드라이어 거치대
CN107655206B (zh) 一种可检测温度的热风枪
KR20200001357A (ko) 리모컨으로 동작되는 화재감지기용 복합 테스트 장비
US20070229293A1 (en) Techniques for Smoke Detection
CN110712163A (zh) 用于电动工具的照明系统
WO2019037681A1 (zh) 一种热风枪
CN102128857B (zh) 液体持续燃烧试验仪
JP2010251277A (ja) 直管型照明装置
KR102087401B1 (ko) 열감지에 의한 경보가 가능한 디퓨져
CN207180015U (zh) 一种热风枪
CN207180018U (zh) 热风枪
JP2008138904A (ja) 加熱装置
CN219891588U (zh) 一种安装方便的旋钮控制器
CN110566998B (zh) 激光点火装置、燃气热水器及点火调试方法
CN110567158B (zh) 燃气热水器
CN105042382A (zh) 一种led变焦成像灯
CN210809677U (zh) 电吹风及其温度控制模块的安装结构
CN110925653A (zh) 灯具
CN220654989U (zh) 一种恒温吹风机
CN111412513A (zh) 取暖器
CN213273235U (zh) 显示装置及热水器
JPH0528375A (ja) 火災感知器の試験方法及び試験装置
JP2020103869A (ja) ドライヤ
WO2024208154A1 (zh) 电子雾化装置及雾化设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18849351

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18849351

Country of ref document: EP

Kind code of ref document: A1