A smart controller for three-phase split air conditioners

Abstract

A smart controller for a three-phase split-type air conditioner includes rectangular upper and lower housings and an internal cavity. The upper housing has first and second stepped sections on its top, with a first through-hole on the first stepped section and a second through-hole on its side wall. The second stepped section has a third through-hole, and the lower housing has a fourth through-hole on its side wall. A support is located within the cavity, with three-phase power terminals mounted on it. First and second circuit boards, spaced apart from each other, are located within the cavity. A third circuit board, with terminals mounted on it, is located above the support and can be connected to different functions. In application, considering the environment of a three-phase split-type air conditioner, it can be placed in a distribution box, directly connected to and outputting three-phase power, improving load capacity and enabling power monitoring. Different functions can be achieved through the connection of custom terminals, and there is ample space for heat dissipation between the circuit boards. Therefore, this invention is well-suited for the operating environment of three-phase split-type air conditioners.

Description

Technical Field

[0001] This invention relates to controllers, belonging to the field of intelligent electrical appliances, and particularly to an intelligent controller for three-phase split air conditioners. Background Technology

[0002] In smart homes, there are already air conditioners with intelligent features that can be controlled remotely via an app, including turning the air conditioner on / off, adjusting the temperature and humidity. However, for older air conditioners that do not have intelligent features, smart sockets are usually added to enable some intelligent functions.

[0003] Smart sockets are usually inserted into wall sockets like ordinary sockets and fixed in one position. The diodes used for infrared emission and the receivers used for infrared reception are fixed on the circuit board. The direction and distance of infrared signal emission and reception are limited. In addition, when there are other obstructions around the socket or the socket is blocked by an air conditioner, the insufficient penetrating power of infrared light can easily lead to situations where the control signal sent by the smart controller cannot be received by the air conditioner.

[0004] Patent application number 202121044608.6, filed on May 17, 2021, discloses an air conditioner companion socket capable of intelligent control. It includes a first outer shell, a controller, and an indicator light. A second outer shell is mounted on the left side of the first outer shell, and a connector plug is located on the right side of the second outer shell. A plug base is mounted on the inner side of the first outer shell, and an insulator is mounted on the outer side of the plug base. A signal transceiver is located on the right side of the insulator, and a lamp holder base is mounted below the right side of the signal transceiver. The controller is mounted on the left side of the insulator, and fixing bolts are installed at both the top and bottom of the controller. An opening slot is provided below the insulator, and a microphone is installed inside the opening slot. A plug connection hole is provided on the outer wall of the second outer shell, and a display screen is mounted on the left side of the plug connection hole.

[0005] While this device can achieve intelligent control of traditional household air conditioners, its placement on a socket requires significant space, limiting it to basic functions like on / off or timer control. It cannot accommodate additional internal components for monitoring temperature, power consumption, or other parameters. Furthermore, it is unsuitable for large three-phase split-type air conditioners used in factories or larger venues. These large units have high loads, demanding efficient heat dissipation from the controller. Additionally, the sockets for these large air conditioners are often embedded in the ceiling or located far from the controller, making infrared light transmission difficult and susceptible to interference, resulting in poor control accuracy or even no control at all. Therefore, its applicability is limited. Consequently, there is an urgent need for an intelligent control method suitable for three-phase split-type air conditioners to address this issue. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned defects and problems in the prior art and to provide a smart controller with better applicability for three-phase split air conditioners.

[0007] To achieve the above objectives, the technical solution of the present invention is: an intelligent controller for a three-phase split air conditioner, the intelligent controller comprising a rectangular box, the rectangular box comprising an upper box and a lower box, the upper box and the lower box being joined together vertically to form an accommodating cavity therein;

[0008] The top side of the upper box is successively recessed to form a first step and a second step; the top wall of the first step has a plurality of first through holes, the side wall of the first step has a plurality of second through holes, and the top wall of the second step has a plurality of third through holes; the side wall of the lower box has a plurality of fourth through holes.

[0009] A support is provided inside the accommodating cavity, and several three-phase electrical terminals are arranged side by side on the support. One end of each three-phase electrical terminal is fixed to the top surface of the support, and the other end extends outward into the fourth through hole.

[0010] A first circuit board is disposed inside the accommodating cavity, and the first circuit board is disposed at a certain distance from the bottom of the lower box. A second circuit board is disposed above the first circuit board, and the second circuit board is disposed at a certain distance from the first circuit board. A third circuit board is disposed above the support. Several terminals are disposed on the third circuit board.

[0011] Several of the terminals are electrically connected to the second circuit board. The terminals can be respectively configured as supply air temperature terminals, return air temperature terminals, infrared input terminals, infrared output terminals, and relay terminals.

[0012] The lower box body has a hollow window on its side wall, and a snap-fit ​​block is embedded therein. Several fourth through holes are provided on the side wall of the snap-fit ​​block; several first through holes extend downward and correspond one-to-one with several second through holes; several third through holes extend downward and correspond one-to-one with several fourth through holes.

[0013] The top of the snap-fit ​​block is provided with several U-shaped bolt surrounds, and bolts are provided in each of the bolt surrounds. The bolts extend downward into the fourth through hole, and the bolts correspond one-to-one with the fourth through hole.

[0014] The top of the snap-fit ​​block snaps into the lower part of the second step, and the third through holes correspond one-to-one with the bolts. The opening diameter of the third through hole is smaller than the bolt head diameter.

[0015] Several of the terminals are embedded in several first through holes in a one-to-one correspondence, and the wiring of the terminals extends outward from the second through holes.

[0016] A protective cover is provided on the first stepped portion. One end of the protective cover is fixed to the first stepped portion by a rotating shaft, and the other end extends to the second stepped portion and covers the third through hole.

[0017] The other end of the protective cover is provided with a downwardly extending side plate. The lower end of the side plate has several notches distributed in a sawtooth pattern, and the wiring of the terminal extends outward from the notches.

[0018] A first temperature sensor is connected to the air supply temperature terminal. The first temperature sensor is located at the air supply outlet of the air conditioner and is used to detect the temperature of the air supply outlet.

[0019] A second temperature sensor is connected to the return air temperature terminal. The second temperature sensor is located at the air conditioner return air vent and is used to detect the temperature of the air conditioner return air vent.

[0020] The second circuit board is equipped with an infrared transceiver chip, which is electrically connected to the infrared input terminal and the infrared output terminal.

[0021] An infrared receiving probe is connected to the infrared input terminal block. The infrared receiving probe is set at a custom position and is used for personnel to input control commands for the air conditioner.

[0022] An infrared transmitting probe is connected to the infrared output terminal. The infrared transmitting probe is positioned within the receiving range of the air conditioner's control receiver and is used to output control commands for the air conditioner.

[0023] A current transformer is installed on several of the three-phase terminals, and the current transformer is electrically connected to the first circuit board.

[0024] The first circuit board is equipped with a voltage transformer, a transformer, a thermistor, a power relay, and an energy monitoring chip;

[0025] The voltage transformer is electrically connected to several three-phase terminals and is used to measure the voltage of the three-phase terminals; the power monitoring chip is electrically connected to the current transformer and the voltage transformer and is used to receive data from the current transformer and the voltage transformer and to measure the power of the air conditioner.

[0026] The transformer is used to convert the high-voltage AC power input from the three-phase terminal into low-voltage DC power; the thermistor is used to set the temperature threshold of the air conditioner.

[0027] The power relay is electrically connected to the relay terminal, which is connected to the corresponding control part of the air conditioner to control the on / off state of the air conditioner when the air conditioner temperature threshold is reached.

[0028] The second circuit board is also provided with a communication component, which includes a wireless communication chip, an embedded eSIM chip, and a transceiver antenna.

[0029] The second circuit board is provided with function buttons and indicator lights, and the upper box is provided with keycaps corresponding to the function buttons and light-transmitting areas corresponding to the indicator lights.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] This invention discloses an intelligent controller for a three-phase split-type air conditioner, comprising a rectangular upper and lower housing with an accommodating cavity. The top side of the upper housing has a first and a second stepped section, with a first through hole on the first stepped section and a second through hole on its side wall. The second stepped section has a third through hole, and the side wall of the lower housing has a fourth through hole. A support is disposed within the accommodating cavity, with three-phase terminals arranged side-by-side on it. A first circuit board is disposed within the accommodating cavity and spaced apart from the bottom of the lower housing. A second circuit board is disposed above the first circuit board and spaced apart from the support. The invention includes a third circuit board with terminals that can be configured for different functions. In application, specifically for three-phase split-type air conditioners, this invention can be installed within a distribution box. By directly connecting the three-phase power supply to the air conditioner via the three-phase terminals, the controller's load capacity is increased, and air conditioner data monitoring is achieved. Functional modules connected to the custom terminals enable temperature monitoring, infrared control, and on / off control. Furthermore, the circuit boards are spaced apart, providing ample space for heat dissipation of the components. Therefore, this invention is well-suited for the use of three-phase split-type air conditioners. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the external structure of the present invention.

[0033] Figure 2 This is a cross-sectional view of the internal structure of the present invention.

[0034] Figure 3 This is a schematic diagram of the snap-fit ​​block of the present invention.

[0035] Figure 4 This is a schematic diagram of the rectangular box structure of the present invention.

[0036] Figure 5 This is one of the schematic diagrams of the circuit board structure of the present invention.

[0037] Figure 6 This is the second schematic diagram of the circuit board structure of the present invention.

[0038] Figure 7 This is the third schematic diagram of the circuit board structure of the present invention.

[0039] Figure 8 This is a schematic diagram of the notch structure in Embodiment 1 of the present invention.

[0040] In the diagram: Rectangular box 1, Upper box 11, First step 111, Second step 112, First through hole 113, Second through hole 114, Third through hole 115, Fourth through hole 116, Protective cover 117, Side plate 118, Notch 119, Rectangular notch 120, Lower box 12, Hollow window 121, Clip block 122, Bolt enclosure 123, Bolt 124, Accommodating cavity 13, Support 2, Three-phase terminal block 21, Current transformer 22, Voltage transformer 23, Transformer 24, Thermistor 25, Power relay 26, Power monitoring chip 27 1. First circuit board 3. Second circuit board 4. Infrared transceiver chip 41. Communication component 42. Wireless communication chip 421. Embedded eSIM chip 422. Transceiver antenna 423. Function button 43. Indicator light 44. Keycap 45. Light-transmitting area 46. Third circuit board 5. Terminal 51. Supply air temperature terminal 511. Return air temperature terminal 512. Infrared input terminal 513. Infrared output terminal 514. Relay terminal 515. First temperature sensor 52. Second temperature sensor 53. Infrared receiving probe 54. Infrared transmitting probe 55. Detailed Implementation

[0041] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] Example 1:

[0043] See Figures 1-7 A smart controller for a three-phase split air conditioner, the smart controller includes a rectangular box 1, the rectangular box 1 includes an upper box 11 and a lower box 12, the upper box 11 and the lower box 12 are joined together vertically to form an accommodating cavity 13.

[0044] The top side of the upper box 11 is successively recessed to form a first step 111 and a second step 112; the top wall of the first step 111 is provided with a plurality of first through holes 113, the side wall of the first step 111 is provided with a plurality of second through holes 114, the top wall of the second step 112 is provided with a plurality of third through holes 115; the side wall of the lower box 12 is provided with a plurality of fourth through holes 116.

[0045] A support 2 is provided in the cavity 13. Several three-phase terminals 21 are arranged in parallel on the support 2. One end of each three-phase terminal 21 is fixed to the top surface of the support 2, and the other end extends outward into the fourth through hole 116.

[0046] A first circuit board 3 is disposed inside the accommodating cavity 13. The first circuit board 3 is disposed at a certain distance from the bottom of the lower box 12. A second circuit board 4 is disposed above the first circuit board 3. The second circuit board 4 is disposed at a certain distance from the first circuit board 3. A third circuit board 5 is disposed above the support 2. A plurality of terminals 51 are disposed on the third circuit board 5.

[0047] Several of the terminals 51 are electrically connected to the second circuit board 4. The terminals 51 can be respectively configured as supply air temperature terminal 511, return air temperature terminal 512, infrared input terminal 513, infrared output terminal 514, and relay terminal 515.

[0048] In application, this device is installed inside a transformer box, such as... Figure 1 As shown, the bottom of the lower box 12 is provided with a slot and a buckle, similar to the common back-mounted structure of circuit breakers. This allows the device to be snapped onto the slide rail of the transformer box. At the same time, the box is rectangular in shape, so it can be placed side by side with circuit breakers and other equipment, saving space in the transformer box and not appearing obtrusive.

[0049] During installation, three-phase power is connected to the three-phase terminal 21. The three-phase terminal 21 has three lines (A, B, and C) in a three-phase four-wire transmission line, as well as a neutral line (N). Each of the three lines (A, B, and C) has an input terminal and an output terminal. The input terminal can connect the power to the controller, and the input terminal can also connect the power to an external three-phase split air conditioner. A current transformer 22 is installed between the input terminal and the output terminal to sense and measure the real-time current flowing through the three lines. The input terminals of the three lines and the neutral line (N) are connected to the first circuit board 3 via cables, so that the voltage transformer 23 on the first circuit board 3 can sense and measure the voltage on each line to measure the corresponding real-time voltage.

[0050] The rectangular box 1 is arranged in two layers, with the first circuit board 3 located at the bottom and the second circuit board 4 located at the top, with a certain distance between the two circuit boards. This is because more powerful components are needed to monitor and control the data of a high-power three-phase air conditioner, which places higher demands on heat dissipation. Therefore, the heat between the circuit boards needs to be dissipated so that the heat from the electronic components on the first circuit board 3 will not affect the electronic components on the second circuit board 4. The main heat-generating components are all located on the first circuit board 3, while the second circuit board 4 mainly houses other electronic components with relatively low heat generation.

[0051] See Figure 8 In one embodiment, the first through hole 113 and the second through hole 114 on the first stepped portion 111 can also be made to form a plurality of rectangular notches 120 on the first stepped portion 111, and a plurality of terminals 51 are respectively located in the plurality of rectangular notches 120. Compared with the design of opening holes, this design is more conducive to the assembly of terminals 51, and is more convenient to replace when terminals 51 are damaged.

[0052] Example 2:

[0053] The lower box 12 has a hollow window 121 on its side wall, and a snap-fit ​​block 122 is embedded therein. A plurality of fourth through holes 116 are provided on the side wall of the snap-fit ​​block 122; a plurality of first through holes 113 extend downward and correspond one-to-one with a plurality of second through holes 114; a plurality of third through holes 115 extend downward and correspond one-to-one with a plurality of fourth through holes 116.

[0054] The top of the snap-fit ​​block 122 is provided with several U-shaped bolt surrounds 123, and bolts 124 are provided in each of the bolt surrounds 123. The bolts 124 extend downward into the fourth through hole 116, and the bolts 124 correspond one-to-one with the fourth through hole 116.

[0055] The top of the snap-fit ​​block 122 snaps into the lower part of the second step 112. Several third through holes 115 correspond one-to-one with several bolts 124. The opening diameter of the third through hole 115 is smaller than the bolt head diameter of the bolt 124.

[0056] A number of the terminals 51 are embedded in a number of first through holes 113 in a one-to-one correspondence, and the wiring of the terminals 51 extends outward from the second through holes 114.

[0057] A protective cover 117 is provided on the first stepped portion 111. One end of the protective cover 117 is fixed to the first stepped portion 111 by a pivot, and the other end extends to the second stepped portion 112 and covers the third through hole 115.

[0058] The other end of the protective cover 117 is provided with a downwardly extending side plate 118. The lower end of the side plate 118 has several notches 119 distributed in a sawtooth shape, and the wiring of the terminal 51 extends outward from the notches 119.

[0059] In application, for ease of assembly and production, the rectangular box 1 is divided into an upper box 11 and a lower box 12, with corresponding support columns inside to fix the circuit board. The first step 111 and the second step 112, formed from top to bottom, facilitate the installation of wiring on the terminal block 51.

[0060] The side wall of the lower box 12 is replaced by a snap-fit ​​block 122. The snap-fit ​​block 122 is inserted into the hollow window 121 from top to bottom and is pressed and fastened by the upper box 1. Several first through holes 113, second through holes 114, third through holes 115, and fourth through holes 116 are parallel to each other in the length direction and correspond one-to-one in the width direction. The access cable of the terminal 51 is connected through the second through hole 114. The access cable of the three-phase terminal 21 is pressed and fixed by the bolt 124 in the third through hole 115. The opening diameter of the third through hole 115 is smaller than the bolt head diameter of the bolt 124, which facilitates the limiting of the bolt 124 and prevents it from falling off.

[0061] To further improve safety and prevent accidental electric shock, a protective cover 117 is installed on the first step. The protective cover 117 covers the three-phase power connection post 21 and the terminal post 51, which can further ensure the safe and stable connection of external components. In addition, the protective cover 117 itself can also be fixed with bolts.

[0062] Example 3:

[0063] A first temperature sensor 52 is connected to the air supply temperature terminal 511. The first temperature sensor 52 is located at the air supply outlet of the air conditioner and is used to detect the temperature of the air supply outlet of the air conditioner.

[0064] A second temperature sensor 53 is connected to the return air temperature terminal 512. The second temperature sensor 53 is located at the air conditioner return air vent and is used to detect the temperature of the air conditioner return air vent.

[0065] The second circuit board 4 is provided with an infrared transceiver chip 41, which is electrically connected to the infrared input terminal 513 and the infrared output terminal 514.

[0066] An infrared receiving probe 54 is connected to the infrared input terminal 513. The infrared receiving probe 54 is set at a custom position and is used for personnel to input control commands for the air conditioner.

[0067] An infrared transmitting probe 55 is connected to the infrared output terminal 514. The infrared transmitting probe 55 is located within the receiving range of the air conditioner's control receiver and is used to output control commands for the air conditioner.

[0068] A current transformer 22 is provided on several of the three-phase terminals 21, and the current transformer 22 is electrically connected to the first circuit board 3.

[0069] The first circuit board 3 is equipped with a voltage transformer 23, a transformer 24, a thermistor 25, a power relay 26, and an energy monitoring chip 27;

[0070] The voltage transformer 23 is electrically connected to several three-phase terminals 21 and is used to measure the voltage of the three-phase terminals 21; the power monitoring chip 27 is electrically connected to the current transformer 22 and the voltage transformer 23 and is used to receive data from the current transformer 22 and the voltage transformer 23 and measure the power of the air conditioner.

[0071] The transformer 24 is used to convert the high-voltage AC power input from the three-phase terminal 21 into low-voltage DC power; the thermistor 25 is used to set the temperature threshold of the air conditioner.

[0072] The power relay 26 is electrically connected to the relay terminal 515, which is connected to the corresponding control part of the air conditioner and is used to control the on / off state of the air conditioner when the air conditioner temperature threshold is reached.

[0073] The second circuit board 4 is also provided with a communication component 42, which includes a wireless communication chip 421, an embedded eSIM chip 422, and a transceiver antenna 423.

[0074] The second circuit board 4 is provided with a function button 43 and an indicator light 44. The upper box 11 is provided with a keycap 45 corresponding to the function button 43 and a light-transmitting area 46 corresponding to the indicator light 44.

[0075] In application, when implementing the corresponding monitoring or control functions, the first temperature sensor 52 is installed at the air outlet of the air conditioner via an extension cable of a certain length, so as to facilitate the measurement of the air temperature at the air outlet; similarly, the second temperature sensor 53 can also be installed at the return air outlet of the air conditioner via an extension cable to measure the air temperature at the return air outlet.

[0076] The processing chip inside the controller can analyze the temperatures monitored by the first temperature sensor 52 and the second temperature sensor 53, and then control the temperature of the air conditioner. For example, if the temperature at the return air vent is too low, the temperature will be increased; or if the temperature at the return air vent is too high, the temperature will be decreased. Furthermore, by setting the thermistor 25 and the power relay 26, when the temperature reaches a certain threshold, the thermistor 25 melts, thereby driving the power relay 26 to disconnect the operation of the external air conditioner.

[0077] The infrared emitting probe 55 is installed near the air conditioner's control panel or receiver, allowing the infrared light emitted by the probe to be transmitted to the control panel for control. The infrared receiving probe 54 is installed in a convenient location for remote control. When the user presses the remote, the infrared light emitted by the remote is simultaneously received by both the receiving probe 54 and the control panel, feeding back to the intelligent controller. The communication component 42 then transmits this information to a remote server, allowing the server to view and analyze the user's settings. The communication component 42 can also receive commands from the server, providing the device with more comprehensive intelligent remote control capabilities. Furthermore, it can be combined with a server and multiple intelligent controllers to form a larger intelligent system, enabling analysis and control of air conditioners over a wider area, ensuring that the operation of air conditioners within a given area meets relevant environmental and energy-saving requirements.

[0078] Therefore, in order to set these different functions, the corresponding external devices need to be connected to terminal 51 to realize the customization of different functions.

[0079] In the application, two indicator lights 44 can be set: one is a power indicator light, which displays green when the intelligent controller is working normally and red when it is not working normally; the other is a network indicator light, which displays green when the network connection is successful and red when the connection fails.

[0080] Function button 43 can be set as a universal button that integrates multiple functions; for example, when the device is off, a short press will turn it on; when the device is on, a short press will start the automatic infrared code matching program, with one beep when the infrared code is successfully matched and three beeps when the matching fails; a long press for a certain period of time can enable the intelligent controller's factory reset function; and a buzzer can also be set on the circuit board to provide audible prompts for the corresponding operations.

[0081] It should be noted that although the logic chip for processing data is not shown in this device, a microcontroller unit (MCU), also known as a single-chip microcomputer or microcontroller, should be provided on the circuit board to perform calculations or control on the corresponding electronic components using the logic chip. Of course, the wireless communication chip 421 in the communication component 42 or other chips with certain general computing capabilities can also be used for corresponding calculations or control.

[0082] Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An intelligent controller for a three-phase split-type air conditioner, characterized in that: The intelligent controller is installed in the transformer box. The intelligent controller includes a rectangular box (1). The rectangular box (1) includes an upper box (11) and a lower box (12). The upper box (11) and the lower box (12) are joined together vertically to form an accommodating cavity (13). The top side of the upper box (11) is successively recessed to form a first step (111) and a second step (112); the top wall of the first step (111) is provided with a plurality of first through holes (113), the side wall of the first step (111) is provided with a plurality of second through holes (114), the top wall of the second step (112) is provided with a plurality of third through holes (115); the side wall of the lower box (12) is provided with a plurality of fourth through holes (116). A support (2) is provided in the cavity (13), and a number of three-phase terminals (21) are arranged in parallel on the support (2). One end of each three-phase terminal (21) is fixed to the top surface of the support (2), and the other end extends outward into the fourth through hole (116). A first circuit board (3) is provided inside the accommodating cavity (13). The first circuit board (3) is disposed at a certain distance from the bottom of the lower box (12). A second circuit board (4) is disposed above the first circuit board (3). The second circuit board (4) is disposed at a certain distance from the first circuit board (3). A third circuit board (5) is disposed above the support (2). A plurality of terminals (51) are provided on the third circuit board (5). Several of the terminals (51) are electrically connected to the second circuit board (4). The terminals (51) can be respectively configured as supply air temperature terminal (511), return air temperature terminal (512), infrared input terminal (513), infrared output terminal (514), and relay terminal (515). The lower box (12) has a perforated window (121) on its side wall, and a snap-fit ​​block (122) is embedded therein. Several fourth through holes (116) are provided on the side wall of the snap-fit ​​block (122); several first through holes (113) extend downward and correspond one-to-one with several second through holes (114); several third through holes (115) extend downward and correspond one-to-one with several fourth through holes (116); The top of the snap-fit ​​block (122) is provided with several U-shaped bolt surrounds (123), and bolts (124) are provided in each of the bolt surrounds (123). The bolts (124) extend downward into the fourth through hole (116), and the bolts (124) correspond one-to-one with the fourth through hole (116). The top of the snap-fit ​​block (122) is snapped into the lower part of the second step (112), and a plurality of the third through holes (115) correspond one-to-one with a plurality of the bolts (124). The opening diameter of the third through hole (115) is smaller than the bolt head diameter of the bolt (124). A protective cover (117) is provided on the first stepped portion (111). One end of the protective cover (117) is fixed to the first stepped portion (111) by a pivot, and the other end extends to the second stepped portion (112) and covers the third through hole (115). The other end of the protective cover (117) is provided with a downwardly extending side plate (118), and the lower end of the side plate (118) has a number of notches (119) distributed in a sawtooth shape, and the wiring of the terminal (51) extends outward from the notches (119). The first through hole (113) and the second through hole (114) on the first stepped portion (111) are connected, and a plurality of rectangular notches (120) are formed on the first stepped portion (111), and a plurality of terminals (51) are respectively located in the plurality of rectangular notches (120).

2. The intelligent controller for a three-phase split-type air conditioner according to claim 1, characterized in that: Several of the terminals (51) are embedded in several first through holes (113) in a one-to-one correspondence, and the wiring of the terminals (51) extends outward from the second through hole (114).

3. The intelligent controller for a three-phase split-type air conditioner according to claim 1, characterized in that: A first temperature sensor (52) is connected to the air supply temperature terminal (511). The first temperature sensor (52) is located at the air supply outlet of the air conditioner and is used to detect the temperature of the air supply outlet. A second temperature sensor (53) is connected to the return air temperature terminal (512). The second temperature sensor (53) is located at the air conditioner return air inlet and is used to detect the temperature of the air conditioner return air inlet.

4. The intelligent controller for a three-phase split-type air conditioner according to claim 1, characterized in that: An infrared transceiver chip (41) is provided on the second circuit board (4), and the infrared transceiver chip (41) is electrically connected to the infrared input terminal (513) and the infrared output terminal (514). An infrared receiving probe (54) is connected to the infrared input terminal (513). The infrared receiving probe (54) is set at a custom position and is used for personnel to input control commands for the air conditioner. An infrared transmitter (55) is connected to the infrared output terminal (514). The infrared transmitter (55) is located within the receiving range of the air conditioner's control receiver and is used to output control commands for the air conditioner.

5. The intelligent controller for a three-phase split-type air conditioner according to claim 1, characterized in that: A current transformer (22) is provided on several of the three-phase terminals (21), and the current transformer (22) is electrically connected to the first circuit board (3); The first circuit board (3) is provided with a voltage transformer (23), a transformer (24), a thermistor (25), a power relay (26), and an energy monitoring chip (27). The voltage transformer (23) is electrically connected to several three-phase terminals (21) for measuring the voltage of the three-phase terminals (21); the power monitoring chip (27) is electrically connected to the current transformer (22) and the voltage transformer (23) for receiving data from the current transformer (22) and the voltage transformer (23) and measuring the power of the air conditioner. The transformer (24) is used to convert the high-voltage AC power input from the three-phase terminal (21) into low-voltage DC power; the thermistor (25) is used to set the temperature threshold of the air conditioner; The power relay (26) is electrically connected to the relay terminal (515), and the relay terminal (515) is connected to the corresponding control part of the air conditioner to control the on / off state of the air conditioner when the air conditioner temperature threshold is reached.

6. The intelligent controller for a three-phase split-type air conditioner according to claim 1, characterized in that: The second circuit board (4) is also provided with a communication component (42), which includes a wireless communication chip (421), an embedded eSIM chip (422), and a transceiver antenna (423).

7. The intelligent controller for a three-phase split-type air conditioner according to claim 1, characterized in that: The second circuit board (4) is provided with a function button (43) and an indicator light (44). The upper box (11) is provided with a keycap (45) corresponding to the function button (43) and a light-transmitting area (46) corresponding to the indicator light (44).

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