Spray head module

Abstract

The utility model discloses a nozzle module, which comprises an aluminum ingot processing top shell and a piezoelectric ceramic module, the bottom end of the aluminum ingot processing top shell is provided with an installation cavity, the groove wall of the top end of the installation cavity is fixedly provided with a nichrome composite heating sheet, and the bottom end of the nichrome composite heating sheet is fixedly connected with an NTC temperature sensor. And the piezoelectric ceramic module is fixedly mounted at the bottom end of an inner cavity of the mounting cavity. According to the utility model, the NTC temperature sensor senses the temperature of the piezoelectric ceramic module and rapidly transmits the temperature to the temperature control circuit board module, and the high control circuit board module and a preset PI D software algorithm determine to start the heat dissipation fan to dissipate heat or start the nickel-chromium alloy composite heating sheet in the installation cavity to heat. It is ensured that the module temperature is always kept at the designed working temperature 25 DEG C, and the problems that huge heating cannot be controlled due to long-time continuous work of a piezoelectric ceramic module and creep vibration and structural stress deformation damage in the working process of a ceramic chip are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a nozzle module technical field especially relates to a nozzle module. BACKGROUND

[0002] In prior art, the existing brother nozzle module on the market is mainly a bottom surface piezoelectric ceramic module plus an aluminum shell or a plastic injection shell, a hollow chamber is formed except that the four edges of the piezoelectric ceramic module are fixed to contact the shell, and a control circuit of the piezoelectric ceramic is arranged in the chamber.

[0003] The existing design only relies on the hollow sealing chamber to transfer the large amount of heat generated by the ceramic sheet during work to the shell and then dissipate to the air, and the heat conduction efficiency is extremely low, and the ceramic sheet is suspendedly installed in the chamber, so that the vibration during work cannot be inhibited, thereby leading to the situations of opening, deformation and fragmentation of the ceramic sheet due to the large amount of heat and vibration. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in prior art and provides a nozzle module.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A nozzle module, comprising an aluminum ingot processing top shell and a piezoelectric ceramic module, a mounting cavity is formed in the bottom end of the aluminum ingot processing top shell, a nichrome alloy composite heating sheet is fixedly installed on the top end groove wall of the mounting cavity, an NTC temperature sensor is fixedly connected to the bottom end of the nichrome alloy composite heating sheet, the piezoelectric ceramic module is fixedly installed at the inner cavity bottom end of the mounting cavity, and a heat-conducting paste is arranged between the piezoelectric ceramic module and the nichrome alloy composite heating sheet, the NTC temperature sensor is completely wrapped by the heat-conducting paste, a temperature control circuit board module is fixedly installed on the front top of the aluminum ingot processing top shell, and an LCD display screen is fixedly installed on the front of the temperature control circuit board module.

[0007] As a further scheme of the utility model, front end connecting ear plates are fixedly connected to the both sides of the upper part of the front surface of the aluminum ingot processing top shell, and a circuit installation groove is formed in the aluminum ingot processing top shell between the two front end connecting ear plates.

[0008] As a further scheme of the utility model, a back end connecting ear plate is fixedly connected to the top back of the aluminum ingot processing top shell, and a paste pouring groove is formed in the aluminum ingot processing top shell on one side of the back end connecting ear plate.

[0009] As a further scheme of the utility model, a plurality of nozzle installation grooves are formed in one side of the bottom end of the aluminum ingot processing top shell, and straight ink channels are formed in the top end groove walls of the nozzle installation grooves.

[0010] As a further scheme of the utility model: the inner chamber top of the straight ink channel is fixedly installed with a double-layer pagoda ink inlet nozzle, and the inner chamber of the double-layer pagoda ink inlet nozzle is fixedly installed with a polyethylene filter core.

[0011] As a further scheme of the utility model: the top of the aluminum ingot processing top shell positive and negative two sides is fixedly installed with a mounting rack plate, and a plurality of top shell heat dissipation grooves are equidistantly formed in the top of one side of the aluminum ingot processing top shell.

[0012] As a further scheme of the utility model: the top end of the aluminum ingot processing top shell is fixedly installed with a fixed mounting frame, and the inside of the fixed mounting frame is fixedly installed with a heat dissipation fan.

[0013] Compared with the prior art, the utility model provides a nozzle module, has the following beneficial effects:

[0014] The nozzle module, through the NTC temperature sensor, the temperature of the piezoelectric ceramic module is perceived and rapidly transmitted to the temperature control circuit board module, the high control circuit board module and the preset PID software algorithm determine that the heat dissipation fan is started to heat dissipation or the nickel-chromium alloy composite heating piece inside the installation cavity is started to heat, ensure that the module temperature always remains at the design working temperature 25 DEG C, solve the problem that the piezoelectric ceramic module is brought about by long time continuous uninterrupted work and the great heat is not controlled and the creep vibration and structural stress deformation damage in the work of ceramic sheet.

[0015] The part not involved in the device is same as or can adopt the prior art to be realized, the utility model has the advantages of simple structure and convenient operation. DETAILED DESCRIPTION

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the whole assembly of the utility model Figure 1 ;

[0017] Figure 2 It is the three-dimensional structure schematic diagram of the whole assembly of the utility model Figure 2 ;

[0018] Figure 3 It is the partial sectional structure schematic diagram of the whole assembly of the utility model.

[0019] In the drawing: 1, aluminum ingot processing top shell, 2, mounting rack plate, 3, fixed mounting frame, 4, heat dissipation fan, 5, front end connecting ear plate, 6, circuit installation groove, 7, temperature control circuit board module, 8, LCD display screen, 9, back end connecting ear plate, 10, paste grout filling groove, 11, top shell heat dissipation groove, 12, nickel-chromium alloy composite heating piece, 13, NTC temperature sensor, 14, piezoelectric ceramic module, 15, nozzle installation groove, 16, straight ink channel, 17, double-layer pagoda ink inlet nozzle, 18, polyethylene filter core. PREFERRED EMBODIMENT

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0021] A nozzle module, as shown in the figure, comprises an aluminum ingot processing top shell 1 and a piezoelectric ceramic module 14. Figures 1 to 3 The aluminum ingot processing top shell 1 is made of high deformation-resistant aluminum alloy with the brand of 5083, and is processed into a desired part shape by a CNC five-axis numerical control machine tool, and then is polished, anodized, cleaned and subjected to a series of fine processing to obtain a standard main structure, the overall error of the main structure being not more than ten microns, which greatly ensures the installation precision and dimensional stability of the final product.

[0022] A mounting cavity is formed at the bottom end of the aluminum ingot processing top shell 1, a plurality of top shell heat dissipation grooves 11 are equidistantly formed at the top end of the aluminum ingot processing top shell 1 corresponding to the mounting cavity, and a plurality of nozzle mounting grooves 15 are formed at the bottom end of the aluminum ingot processing top shell 1 on one side of the mounting cavity, and a straight ink channel 16 is formed at the top end groove wall of the nozzle mounting groove 15.

[0023] Front end connecting lugs 5 are integrally formed at the upper portions of both sides of the front surface of the aluminum ingot processing top shell 1, a circuit mounting groove 6 is formed in the aluminum ingot processing top shell 1 between the two front end connecting lugs 5, and the circuit mounting groove 6 is in communication with the top cavity of the mounting cavity.

[0024] A back end connecting lug 9 is integrally formed at the top portion of the back surface of the aluminum ingot processing top shell 1, a paste pouring groove 10 is formed in the aluminum ingot processing top shell 1 on one side of the back end connecting lug 9, and the paste pouring groove 10 is in communication with the top cavity of the mounting cavity.

[0025] A fixed mounting frame 3 is fixedly mounted at the top end of the aluminum ingot processing top shell 1 by bolts, a heat dissipation fan 4 is fixedly mounted in the fixed mounting frame 3, and the heat dissipation fan 4 is arranged above the plurality of top shell heat dissipation grooves 11 to accelerate the heat dissipation speed of the aluminum ingot processing top shell 1.

[0026] Mounting rack plates 2 are fixedly mounted at the top portions of the front and back surfaces of the aluminum ingot processing top shell 1, so that the overall structure is convenient to install.

[0027] A double-layered pagoda ink inlet nozzle 17 is threadedly mounted at the top portion of the inner cavity of the straight ink channel 16, an ultra-high molecular weight polyethylene filter element 18 with a filtration precision of ten microns is fixedly mounted in the inner cavity of the double-layered pagoda ink inlet nozzle 17, so that the ink can smoothly pass through and impurities and sediment gels cannot pass through, the double-layered pagoda ink inlet nozzle 17 is in close connection with the main body in a threaded structure, and the polyethylene filter element 18 is convenient to replace, maintain and repair.

[0028] The top end groove wall of the installation cavity is fixedly installed with a nichrome composite heating sheet 12, the nichrome composite heating sheet 12 is made of polyimide film and nichrome alloy, and the bottom end of the nichrome composite heating sheet 12 is fixedly connected with a patch type NTC temperature sensor 13, a piezoceramic module 14 is fixedly installed at the bottom end of the inner cavity of the installation cavity through viscous insulating paste, and the edge is bonded and fixed to the aluminum ingot processing top shell 1 through high-temperature-resistant and corrosion-resistant epoxy structural adhesive.

[0029] The viscous insulating paste is made of high-heat-conducting silica gel, nanometer aluminum oxide powder, humectant, stabilizer, catalyst and curing agent, and is fully stirred and ground according to a certain proportion, and has a heat conduction capacity of 20 W / m-k or more; the control circuit of the piezoceramic module 14 is arranged inside the installation cavity.

[0030] The piezoceramic module 14 and the nichrome composite heating sheet 12 are provided with heat-conducting paste, the NTC temperature sensor 13 is completely wrapped by the heat-conducting paste, the aluminum ingot processing top shell 1 is fixedly installed with a temperature control circuit board module 7 at the front top, and the temperature control circuit board module 7 is fixedly installed with an LCD display screen 8 at the front.

[0031] The straight ink connecting channel 16 is about 15 mm long and has a storage capacity of about 1 ml, and the short ink channel avoids the problems of deterioration and solidification of ink left in the straight ink connecting channel 16 for a long time and waste of filter replacement.

[0032] The NTC temperature sensor 13 can quickly and accurately sense the temperature change of the piezoceramic module 14 and rapidly transmit it to the temperature control circuit board module 7, and whether the heat dissipation fan 4 should be started to dissipate heat or the nichrome composite heating sheet 12 installed in the installation cavity should be started to heat is determined by the temperature control circuit board module 7 and the preset PID software algorithm, so as to ensure that the temperature of the module always remains at the designed working temperature of 25℃.

[0033] The temperature control circuit board module 7 is powered by DC 24V, and can also be adaptively selected as DAC: 5V / 12V / 36V / 48V / 60V / 72V / 110V / 220V and other voltage types according to different regions and requirements; the LCD display screen 8 displays the real-time temperature PV value and the set temperature SV value, the current heating state and heating power consumption or the current heat dissipation state and the rotation speed of the heat dissipation fan 4.

[0034] The heating is controlled by the output bandwidth of the MOS tube of the temperature control circuit board module 7, so as to realize precise and flexible control of voltage and current, and compared with the switching control mode of the traditional mechanical relay and solid-state relay, the temperature overshoot is avoided and the impact on the circuit caused by the instantaneous large current is avoided; the rotation speed of the fan is controlled by the PWM output signal of the temperature control circuit board module 7, so as to play a role in energy saving, consumption reduction and reduction of high-speed start-stop vibration of the heat dissipation fan 4.

[0035] Working principle:

[0036] Please refer to Figures 1 to 3 The device is assembled as shown in the figure.

[0037] In use, the NTC temperature sensor 13 senses the temperature of the piezoceramic module 14 and rapidly transmits it to the temperature control circuit board module 7, which determines whether the heat dissipation fan 4 should be started to dissipate heat or the nickel-chromium alloy composite heating sheet 12 inside the installation cavity should be started to heat, so as to ensure that the module temperature always remains at the design working temperature of 25℃.

[0038] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art within the technical range disclosed by the present application, according to the technical scheme and the utility model concept of the present application, equivalent replacement or change, should be covered within the protection scope of the present application.

Claims

1. A showerhead module comprising an aluminum ingot processing top cap (1) and a piezoelectric ceramic module (14), characterized by: The bottom end of the aluminum ingot processing top shell (1) is provided with a mounting cavity, the top end groove wall of the mounting cavity is fixedly provided with a nichrome composite heating sheet (12), the bottom end of the nichrome composite heating sheet (12) is fixedly connected with an NTC temperature sensor (13), the piezoelectric ceramic module (14) is fixedly installed at the bottom end of the inner cavity of the mounting cavity, and the piezoelectric ceramic module (14) and the nichrome composite heating sheet (12) are provided with heat-conducting paste, the NTC temperature sensor (13) is completely wrapped by the heat-conducting paste, the front surface of the aluminum ingot processing top shell (1) is fixedly provided with a temperature control circuit board module (7), and the front surface of the temperature control circuit board module (7) is fixedly provided with an LCD display screen (8).

2. The showerhead module of claim 1, wherein: The front end connecting ear plates (5) are fixedly connected to the two sides of the front surface of the aluminum ingot processing top shell (1), and the aluminum ingot processing top shell (1) between the two front end connecting ear plates (5) is provided with a circuit installation groove (6).

3. The showerhead module of claim 1, wherein: The back end connecting ear plate (9) is fixedly connected to the top of the back surface of the aluminum ingot processing top shell (1), and the aluminum ingot processing top shell (1) on one side of the back end connecting ear plate (9) is provided with a paste pouring groove (10).

4. The showerhead module of claim 1, wherein: A plurality of nozzle installation grooves (15) are formed in one side of the bottom end of the aluminum ingot processing top shell (1), and a straight connection ink channel (16) is formed in the top end groove wall of the nozzle installation groove (15).

5. The showerhead module of claim 4, wherein: The double-layered pagoda ink inlet nozzle (17) is fixedly installed at the top of the inner cavity of the straight connection ink channel (16), and the polyethylene filter element (18) is fixedly installed in the inner cavity of the double-layered pagoda ink inlet nozzle (17).

6. The showerhead module of claim 1, wherein: The mounting rack plates (2) are fixedly installed on the top of the front and back surfaces of the aluminum ingot processing top shell (1), and a plurality of top shell heat dissipation grooves (11) are equidistantly formed in one side of the top of the aluminum ingot processing top shell (1).

7. The showerhead module of claim 1, wherein: The fixed installation frame (3) is fixedly installed at the top end of the aluminum ingot processing top shell (1), and the heat dissipation fan (4) is fixedly installed in the fixed installation frame (3).

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