Air conditioner, indoor fan driving assembly of air conditioner, fan control device and indoor unit

Abstract

The utility model discloses an air conditioner, an indoor fan driving assembly of the air conditioner, a fan control device and an indoor unit. The fan controller and the fan driving module are arranged on the electric control board, the output end of the fan controller is connected with the input end of the fan driving module, the output end of the fan driving module is suitable for being connected with an indoor fan, and the fan controller is configured to control the fan driving module to drive the indoor fan; and the temperature detection module is arranged corresponding to the fan driving module so as to detect the temperature of the fan driving module. Therefore, according to the driving assembly, the fan controller and the fan driving module are arranged in an integrated mode, the problem that in the related technology, the occupied board space of an external fan driver is large is solved, the application cost is reduced, meanwhile, the temperature of the fan driving module is detected in real time through the temperature detection module, and the driving efficiency is improved. The problem that heating of a fan external drive cannot be controlled in the prior art is solved, and the running reliability of the fan drive is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to an indoor fan driving component of an air conditioner, an indoor fan control device of the air conditioner, an indoor unit of the air conditioner and an air conditioner. Background Art

[0002] In air conditioners, due to the safety concerns posed by the risk of refrigerant leakage, the indoor electrical control box is fully sealed. However, within this sealed box, the external fan drive generates heat that cannot be monitored, posing operational reliability risks. Furthermore, the box occupies a large board space, increasing application costs. Utility Model Content

[0003] The present invention aims to solve, at least to a certain extent, one of the technical problems in the related art. To this end, the first object of the present invention is to provide an indoor fan drive assembly for an air conditioner, which integrates a fan controller and a fan drive module. This solves the problem of the external fan drive occupying a large board space in the related art, reduces application costs, and simultaneously uses a temperature detection module to detect the temperature of the fan drive module in real time, making it easier to implement a temperature control protection strategy based on the motor drive module. This solves the problem of uncontrollable heating of the external fan drive in the related art, and improves the operational reliability of the fan drive.

[0004] The second object of the present invention is to provide an indoor fan control device for an air conditioner.

[0005] The third object of the present invention is to provide an indoor unit of an air conditioner.

[0006] The fourth object of the present invention is to provide an air conditioner.

[0007] To achieve the above-mentioned objectives, the first aspect of the present invention proposes an indoor fan drive component of an air conditioner, which drive component includes: an electronic control board; a fan controller and a fan drive module arranged on the electronic control board, the output end of the fan controller is connected to the input end of the fan drive module, the output end of the fan drive module is suitable for being connected to the indoor fan, and the fan controller is configured to control the fan drive module to drive the indoor fan; a temperature detection module, which is arranged corresponding to the fan drive module to detect the temperature of the fan drive module.

[0008] According to the indoor fan drive assembly of the air conditioner of the present invention, the fan controller and the fan drive module are arranged on the electronic control board, wherein the output end of the fan controller is connected to the input end of the fan drive module, and the output end of the fan drive module is suitable for connecting to the indoor fan. The fan controller controls the fan drive module to drive the indoor fan, and the temperature detection module is provided in correspondence with the fan drive module to detect the temperature of the fan drive module. Thus, the drive assembly integrates the fan controller and the fan drive module, solving the problem of large board space occupied by external fan drives in related technologies and reducing application costs. At the same time, the temperature detection module detects the temperature of the fan drive module in real time, making it easy to implement a temperature control protection strategy based on the motor drive module, solving the problem of uncontrollable heating of external fan drives in related technologies and improving the operational reliability of the fan drive.

[0009] In addition, the indoor fan drive assembly of the air conditioner according to the above embodiment of the utility model may also have the following additional technical features:

[0010] Specifically, the fan drive module includes: an inverter circuit, including at least one phase bridge arm, each phase bridge arm is connected to the first direct current, and each phase bridge arm includes a connected upper bridge switch tube and a lower bridge switch tube, and the connection point is suitable for connection to the indoor fan; at least one driver chip, each driver chip corresponds to the upper bridge switch tube and the lower bridge switch tube connected to one phase bridge arm, and each driver chip is also connected to the fan controller to control the upper switch tube and the lower bridge switch tube of the corresponding bridge arm to be turned on or off under the control of the fan controller to drive the indoor fan.

[0011] Specifically, the temperature detection module is provided on any one of the at least one driver chip and is close to an upper bridge switch tube connected to any one of the driver chips.

[0012] Specifically, the electronic control board includes a first area, a second area and a third area. The second area is located between the first area and the third area. The fan controller is located in the first area. At least one driver chip is arranged sequentially in the second area. The upper bridge switch tube and the lower bridge switch tube of at least one phase bridge arm are arranged sequentially in the third area.

[0013] Specifically, the fan controller, the fan drive module and the temperature detection module are arranged on the top surface or the bottom surface of the electric control board.

[0014] To achieve the above-mentioned purpose, the second aspect of the present invention proposes an indoor fan control device for an air conditioner, which includes: the above-mentioned indoor fan drive component; an indoor controller, which is connected to the indoor fan drive component to send a control signal to the indoor fan drive component or receive a feedback signal from the indoor fan drive component; and an isolation module, which is arranged between the indoor controller and the indoor fan drive component to perform signal isolation.

[0015] According to an embodiment of the present invention, an indoor fan control device for an air conditioner comprises an indoor controller connected to the indoor fan drive assembly to send control signals to the indoor fan drive assembly or receive feedback signals from the indoor fan drive assembly. An isolation module is provided between the indoor controller and the indoor fan drive assembly to isolate the signals. Thus, the indoor fan control device, based on the indoor fan drive assembly, reduces application costs and improves fan operation reliability.

[0016] In addition, the indoor fan control device of the air conditioner according to the above embodiment of the present invention may also have the following additional technical features:

[0017] Furthermore, the indoor fan control device of the air conditioner also includes: a rectifier module, the input end of the rectifier module is suitable for being connected to an external power supply, the output end of the rectifier module is connected to the high-voltage power supply end of the indoor fan drive component, and is configured to convert the first alternating current provided by the external power supply into a first direct current to power the indoor fan drive component; a switching power supply module, the input end of the switching power supply module is connected to the output end of the rectifier module, the output end of the switching power supply module is respectively connected to the low-voltage power supply end of the indoor fan drive component, the power supply end of the indoor controller and the power supply end of the isolation module, and is configured to convert the first direct current into a second direct current to power the indoor fan drive component, and convert it into a third direct current to power the indoor controller and the isolation module.

[0018] Furthermore, the indoor fan control device of the air conditioner also includes a display component, which is connected to the indoor controller. The indoor controller is also configured to control the display component to display the operating data of the indoor fan.

[0019] Furthermore, the indoor fan control device of the air conditioner also includes a current loop communication module, which is connected to the indoor controller and the external power supply respectively. The indoor controller is also configured to communicate with the outdoor controller of the air conditioner through the current loop communication module.

[0020] Furthermore, the indoor fan control device of the air conditioner also includes a shell, and the indoor fan drive component, indoor controller, isolation module, rectifier module, switching power supply module and current loop communication module are arranged in the shell.

[0021] To achieve the above-mentioned object, the third aspect of the present invention provides an indoor unit of an air conditioner, comprising the above-mentioned indoor fan drive assembly or the above-mentioned indoor fan control device.

[0022] According to the indoor unit of the air conditioner of the embodiment of the present invention, based on the above-mentioned indoor fan driving assembly or the above-mentioned indoor fan control device, the application cost of the indoor unit is reduced and the operation reliability of the indoor unit is improved.

[0023] To achieve the above-mentioned object, a fourth aspect of the present invention provides an air conditioner, comprising the above-mentioned indoor fan drive assembly, or the above-mentioned indoor fan control device, or the above-mentioned indoor unit.

[0024] According to the air conditioner of the embodiment of the present invention, based on the above-mentioned indoor fan driving assembly or the above-mentioned indoor fan control device or the above-mentioned indoor unit, the application cost of the air conditioner is reduced and the operating reliability of the air conditioner is improved.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a connection diagram of an indoor fan drive assembly of an air conditioner according to one embodiment of the present invention;

[0027] Figure 2 A circuit topology diagram of an indoor fan drive assembly of an air conditioner according to a specific embodiment of the present utility model;

[0028] Figure 3 Schematic diagram of the arrangement of an indoor fan drive assembly of an air conditioner according to a specific embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of a fan controller, a fan drive module, and a temperature detection module arranged on the top surface of an electric control board according to one embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of a fan controller, a fan drive module, and a temperature detection module disposed on the bottom surface of an electric control board according to one embodiment of the present invention;

[0031] Figure 6 A schematic diagram of the connection of an indoor fan control device for an air conditioner according to an embodiment of the present invention;

[0032] Figure 7 This is a connection diagram of an indoor fan control device for an air conditioner according to a specific embodiment of the present utility model;

[0033] Figure 8 1 is a block diagram of an indoor unit according to an embodiment of the present invention;

[0034] Figure 9 1 is a block diagram of an indoor unit according to another embodiment of the present invention;

[0035] Figure 10 1 is a block diagram of an air conditioner according to an embodiment of the present invention;

[0036] Figure 11 is a block diagram of an air conditioner according to another embodiment of the present invention;

[0037] Figure 12 2 is a block diagram of an air conditioner according to another embodiment of the present invention. DETAILED DESCRIPTION

[0038] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] The following describes the indoor fan driving assembly of the air conditioner, the indoor fan control device of the air conditioner, the indoor unit of the air conditioner and the air conditioner proposed by the present invention with reference to the accompanying drawings.

[0040] Figure 1 The figure is a connection diagram of an indoor fan driving assembly of an air conditioner according to one embodiment of the present invention.

[0041] like Figure 1 As shown, the indoor fan driving assembly 100 of the air conditioner of the present application may include: an electric control board 10 , a fan controller 20 and a fan driving module 30 provided on the electric control board 10 , and a temperature detection module 40 .

[0042] The output of the fan controller 20 is connected to the input of the fan driver module 30. The output of the fan driver module 30 is adapted to be connected to the indoor fan. The fan controller 20 is configured to control the fan driver module 30 to drive the indoor fan. The temperature detection module 40 is provided in correspondence with the fan driver module 30 to detect the temperature of the fan driver module 30.

[0043] Specifically, the electric control board 10 is a printed circuit board (PCB), and the fan controller 20 and the fan drive module 30 are arranged on the same electric control board 10 to realize the two-in-one integration of the fan controller 20 and the fan drive module 30, solving the problem of the large board space occupied by the external fan drive in the related technology and reducing the application cost.

[0044] The fan controller 20 is responsible for receiving and processing input signals and generating PWM (Pulse Width Modulation) control signals based on the input signals according to a control algorithm. The fan driver module 30 receives the PWM control signals and converts them into electrical signals that the indoor fan can understand and execute. Specifically, it amplifies the received small PWM control signals and converts them into a corresponding high-current output for controlling the indoor fan. During operation, the fan driver module 30 controls the magnitude and direction of the output current based on the magnitude and direction of the PWM control signals, thereby controlling the fan's speed, direction, torque, and other parameters. The fan driver module 30 can integrate CMOS (Complementary Metal Oxide Semiconductor) control circuits and DMOS (Double-diffused Metal Oxide Semiconductor) power devices, enabling the fan driver module 30 to handle high voltages and high currents to meet the requirements of motor drive.

[0045] The temperature detection module 40 is provided in correspondence with the fan driver module 30 to monitor the temperature of the fan driver module 30 in real time. The temperature detection module 40 can be located within the fan driver module 30 or externally, without limitation. Furthermore, the temperature detection module 40 can be provided in correspondence with the high-temperature generator of the fan driver module 30, using the temperature of the high-temperature generator as the temperature of the fan driver module 30, thereby providing over-temperature protection for the module based on the temperature of the high-temperature generator. For example, the temperature detection module 40 can be located near the switching tube. It can be a thermistor sensor, a thermocouple sensor, or the like.

[0046] Therefore, this embodiment integrates the fan controller 20 and the fan drive module 30, which can achieve miniaturization and low cost of components, and based on the temperature detection of the temperature detection module 40, it is easy to establish over-temperature protection for the fan drive module 30, thereby improving operational reliability.

[0047] Combine Figure 2 As shown, in one embodiment of the present application, the fan drive module 30 includes: an inverter circuit 31, including at least one phase bridge arm, each phase bridge arm is connected to the first direct current VDC, and each phase bridge arm includes a connected upper bridge switch tube and a lower bridge switch tube, and the connection point is suitable for connection to the indoor fan; at least one driver chip 32, each driver chip 32 corresponds to the upper bridge switch tube and the lower bridge switch tube connected to one phase bridge arm, and each driver chip 32 is also connected to the fan controller 20 to control the upper switch tube and the lower bridge switch tube of the corresponding bridge arm to be turned on or off under the control of the fan controller 20 to drive the indoor fan.

[0048] Specifically, the driver chip 32 is used to receive the PWM control signal output by the fan controller 20, and generate a corresponding drive signal according to the PWM control signal, to control the upper bridge switch tube and the lower bridge switch tube of the inverter circuit 31, and to output a corresponding electrical signal by controlling the conduction and shutdown of the upper bridge switch tube and the lower bridge switch tube to drive the indoor fan to operate.

[0049] like Figure 2 As shown, M represents the indoor fan, and the inverter circuit 31 consists of six switching tubes forming a three-phase bridge arm to form a full-bridge inverter topology, wherein the switching tubes Q1 and Q2 constitute the first bridge arm, the switching tube Q1 is the upper bridge switching tube of the first bridge arm, the switching tube Q2 is the lower bridge switching tube of the first bridge arm, and the connection point U of the first bridge arm is connected to the U-phase winding of the indoor fan; the switching tubes Q3 and Q4 constitute the second bridge arm, the switching tube Q3 is the upper bridge switching tube of the second bridge arm, the switching tube Q4 is the lower bridge switching tube of the second bridge arm, and the connection point V of the second bridge arm is connected to the V-phase winding of the indoor fan M; the switching tubes Q5 and Q6 constitute the third bridge arm, the switching tube Q5 is the upper bridge switching tube of the third bridge arm, the switch tube Q6 is the lower bridge switching tube of the third bridge arm, and the connection point W of the third bridge arm is connected to the W-phase winding of the indoor fan. There are three driver chips 32, represented by IC1, IC2 and IC3 respectively. Among them, IC1 is used to control the conduction and shutdown of the switch tubes Q1 and Q2, IC2 is used to control the conduction and shutdown of the switch tubes Q3 and Q4, and IC3 is used to control the conduction and shutdown of the switch tubes Q5 and Q6. By controlling the conduction and shutdown of the six switch tubes, the inverter circuit 31 converts the DC voltage into a three-phase AC output to drive the indoor fan to operate.

[0050] During operation, the fan controller 20 generates six PWM control signals, namely PWM1, PWM2, PWM3, PWM4, PWM5, and PWM6. PWM1 and PWM2 are output to IC1, PWM3 and PWM4 are output to IC2, and PWM5 and PWM6 are output to IC3. IC1 controls the on / off switching of switches Q1 and Q2 based on PWM1 and PWM2, outputting a U-phase electrical signal to the U-phase winding of the indoor fan via connection point U. IC2 controls the on / off switching of switches Q3 and Q4 based on PWM3 and PWM4, outputting a V-phase electrical signal to the V-phase winding of the indoor fan via connection point V. IC3 controls the on / off switching of switches Q5 and Q6 based on PWM5 and PWM6, generating a W-phase electrical signal for the W-phase winding of the indoor fan, thereby driving the indoor fan. The switch tube may be a MOSFET (Metal Oxide Semiconductor Field Effect Transistor), an IGBT (Insulated Gate Bipolar Transistor), or the like, without specific limitation.

[0051] In one embodiment of the present application, the temperature detection module 40 is disposed on any one of the at least one driver chip 32 and is close to an upper bridge switch connected to the driver chip 32 .

[0052] Specifically, for example, the temperature detection module 40 includes an NTC thermistor. The resistance of the NTC thermistor decreases as temperature increases. Because the upper bridge switch is frequently switched on and off, resulting in higher losses and heat generation, the NTC thermistor is placed on the driver chip 32 near the upper bridge switch to detect the temperature of the fan driver module 30 and output the temperature status of the fan driver module 30 in real time.

[0053] For example, the thermistor NTC can be set on IC1 and close to the upper bridge switch Q1, such as Figure 2 As shown, resistor R0 serves as a voltage divider resistor for the thermistor NTC, and the voltage U_AD at the connection node serves as a detection signal for feeding back the detected temperature to the fan drive module 30. Alternatively, the thermistor NTC can be placed on IC2 near the switch Q3, or on IC3 near the switch Q5.

[0054] Combine Figure 3As shown, in one embodiment of the present application, the electric control board 10 includes a first area 11, a second area 12 and a third area 13, the second area 12 is located between the first area 11 and the third area 13, the fan controller 20 is located in the first area 11, at least one driver chip 32 is arranged sequentially in the second area 12, and the upper bridge switch tube and the lower bridge switch tube of at least one phase bridge arm are arranged sequentially in the third area 13.

[0055] Specifically, combined Figure 2 and Figure 3 As shown, the first area 11, the second area 12, and the third area 13 are arranged in sequence from bottom to top along the longitudinal direction. The fan controller 20 is arranged in the middle of the first area 11. IC1, IC2, and IC3 are arranged in sequence from left to right in the second area 12 along the transverse direction. Switches Q1-Q6 are arranged in sequence from left to right in the third area 13 along the transverse direction, corresponding to the corresponding driver chips 32. The thermistor NTC is arranged on IC1, near the switch Q1, to monitor the temperature of the fan driver module 30 in real time.

[0056] It should be noted that Figure 3 This is only a specific embodiment of the present application and can be arranged according to actual conditions during actual application.

[0057] In one embodiment of the present application, the fan controller 20 , the fan driving module 30 and the temperature detection module 40 are disposed on the top surface or the bottom surface of the electric control board 10 .

[0058] For example, the fan controller 20, the fan drive module 30 and the temperature detection module 40 can refer to Figure 4 As shown, it is installed on the top surface of the electric control board 10; the fan controller 20, the fan drive module 30 and the temperature detection module 40 can also refer to Figure 5 As shown, it is installed on the bottom surface of the electric control board 10.

[0059] Furthermore, during the indoor fan control process, the speed of the indoor fan can be controlled based on the temperature of the fan driving module 30 obtained by the temperature detection module 40. The control logic is as follows:

[0060] After power-on, the indoor fan in the control room runs normally at the target speed. When the temperature of the fan drive module reaches T1 (the value is not less than 75°C), the speed of the indoor fan is controlled to decrease at a speed of A / min, and the temperature of the fan drive module of the monitoring block is monitored in real time. When the temperature of the fan drive module exceeds T2 (a value above 85°), the indoor fan is directly controlled to stop and a fault is reported. When the temperature of the fan drive module satisfies: T1 - ΔT < the temperature of the fan drive module < T2, the control fan speed continues to decrease at a speed of A / min until the temperature of the fan drive module satisfies: the temperature of the fan drive module <= T1 - ΔT, at this time the fan speed stabilizes to X2 (less than the initial fan speed) and runs. If a new target speed is received, it runs in a loop according to the target speed; otherwise, it runs according to the current speed.

[0061] In summary, for the indoor fan drive component of the air conditioner according to the present invention, the fan controller and the fan drive module are provided on the electronic control board. Among them, the output end of the fan controller is connected to the input end of the fan drive module, and the output end of the fan drive module is adapted to be connected to the indoor fan. The fan controller controls the fan drive module to drive the indoor fan, and the temperature detection module is arranged corresponding to the fan drive module to detect the temperature of the fan drive module. Thus, this drive component integrates the fan controller and the fan drive module, solves the problem of large board space occupied by the external drive of the fan in the related technology, reduces the application cost, and at the same time, the temperature of the fan drive module is detected in real time through the temperature detection module, making it easy to implement the temperature control protection strategy based on the motor drive module, solves the problem that the heat generation of the external drive of the fan in the related technology cannot be controlled, and improves the operation reliability of the fan drive.

[0062] Corresponding to the above embodiments, the present invention also proposes an indoor fan control device for an air conditioner.

[0063] As Figure 6 shown, the indoor fan control device 1000 of the air conditioner in the embodiment of the present application may include: the above-mentioned indoor fan drive component 100, the indoor controller 200 and the isolation module 300.

[0064] Among them, the indoor controller 200 is connected to the indoor fan drive component 100 to send a control signal to the indoor fan drive component 100 or receive a feedback signal from the indoor fan drive component 100. The isolation module 300 is arranged between the indoor controller 200 and the indoor fan drive component 100 to perform signal isolation.

[0065] Specifically, the indoor controller 200 is connected to the indoor fan drive assembly 100 through the isolation module 300. The indoor controller 200 sends a control signal to the indoor fan drive assembly 100 through the isolation module 300 to communicate and control the indoor fan drive assembly 100. The indoor fan drive assembly 100 drives and controls the indoor fan based on the control signal of the indoor controller 200. In addition, the indoor fan drive assembly 100 outputs feedback signals, such as fan speed, operation / fault information, etc., to the indoor controller 200 through the isolation module 300. The isolation module 300 is used to achieve signal isolation between the indoor controller 200 and the indoor fan drive assembly 100, thereby improving the safety and stability of the control device. The isolation module 30 can be an optocoupler isolation circuit, a relay isolation circuit, etc.

[0066] Therefore, this embodiment realizes signal isolation between the indoor controller 200 and the indoor fan drive assembly 100 through the isolation module 300, thereby improving safety and stability. At the same time, based on the above-mentioned indoor fan drive assembly 100, it realizes integrated miniaturization, reduces application costs, facilitates temperature control protection, and further improves operational reliability.

[0067] Combine Figure 7 As shown, in one embodiment of the present application, the indoor fan control device 1000 of the air conditioner further includes: a rectifier module 400, the input end of the rectifier module 400 is suitable for being connected to an external power supply, the output end of the rectifier module 400 is connected to the high-voltage power supply end of the indoor fan drive assembly 100, and is configured to convert the first alternating current provided by the external power supply into a first direct current VDC to power the indoor fan drive assembly 100; a switching power supply module 500, the input end of the switching power supply module 500 is connected to the output end of the rectifier module 400, the output end of the switching power supply module 500 is respectively connected to the low-voltage power supply end of the indoor fan drive assembly 100, the power supply end of the indoor controller 200 and the power supply end of the isolation module 300, and is configured to convert the first direct current VDC into a second direct current to power the indoor fan drive assembly 100, and convert it into a third direct current to power the indoor controller 200 and the isolation module 300.

[0068] Specifically, the input terminals of the rectifier module 400 are connected to the Lin and Nin terminals of the external power supply to receive AC input from the external power supply, convert the received first alternating current into a first direct current VDC, and output the first direct current VDC to the switching power supply module 500 and the indoor fan drive assembly 100. The rectifier module 400 can be a full-wave rectifier circuit composed of four diodes, or a half-wave rectifier circuit, a bridge rectifier, or the like, without limitation.

[0069] The switching power supply module 500 is used to convert the first DC power VDC into an auxiliary power supply output, such as 15V, 12V, or 5V. For example, the switching power supply module 500 converts the first DC power VDC into a second DC power of 15V to power the indoor fan drive assembly 100, and converts the first DC power VDC into a third DC power of 5V to power the indoor controller 200 and the isolation module 300. The switching tube unit module 500 may be equipped with a step-down circuit to reduce the voltage of the first DC power output. It may also be equipped with a voltage stabilization circuit, a filtering circuit, a boost circuit, etc. The specific arrangement can be determined according to the working requirements.

[0070] After the external power supply is input, the rectifier module 400 rectifies and outputs the first DC power to the switching power supply module 500 and the indoor fan drive component 100. The switching power supply module 500 converts the first DC power into the second DC power and the third DC power to control the power-on and startup of the indoor fan drive component 10, the indoor controller 200 and the isolation module 300, thereby executing the drive control of the indoor fan.

[0071] In one embodiment of the present application, the indoor fan control device 1000 of the air conditioner further includes a display component 600, which is connected to the indoor controller 200. The indoor controller 200 is further configured to control the display component 600 to display the operating data of the indoor fan.

[0072] That is, the display component 600 displays information about the indoor fan, which may include speed, operating information, fault information, etc. The indoor controller 200 can receive the operating data of the indoor fan through the isolation module 300, or directly obtain the operating data of the indoor fan through the monitoring module. For example, the speed can be obtained through the position observer, and the operating / fault information can be determined based on the current or voltage sampling data. The indoor controller 200 sends the operating data of the indoor fan to the display component 600 through TXD1 and RXD1, and the data is displayed through the display component 600. The display component 600 may include a display screen, indicator lights, etc. For example, the operating data can be dynamically displayed through the display screen, and the normal operating status and fault status can be displayed through indicator lights of different colors.

[0073] In one embodiment of the present application, the indoor fan control device 1000 of the air conditioner also includes a current loop communication module 700, which is respectively connected to the indoor controller 200 and the external power supply. The indoor controller 200 is also configured to communicate with the outdoor controller of the air conditioner through the current loop communication module 700.

[0074] Specifically, due to the large distance between the indoor controller 200 and the outdoor controller of the air conditioner, direct communication between the two controllers is not possible. Therefore, a drive circuit must be added in between to enhance the communication signal and resist external interference. Therefore, the indoor controller 200 communicates with the outdoor side via a current loop communication module 700. This current loop communication module 700 utilizes a common N-wire current loop communication circuit to enhance the communication signal between the indoor controller 200 and the outdoor controller, resisting external interference and enabling signal transmission over longer distances at minimal cost. Specifically, the current loop communication module 700 filters and modulates the target signal, converting it into a control current, which is then input into the actuator to complete the control communication task.

[0075] In addition, the indoor controller 200 can control other loads 800 of the indoor unit, such as electric auxiliary heating, high-pressure sterilization, stepper motors, temperature sensors, etc., through control signals. Other loads 800 can also communicate and interact based on the current loop communication module 700. Therefore, the indoor controller 200 of the present application can achieve communication control with the indoor fan drive component 100, communication with the display component 600, control of other loads 800 based on control signals, and current loop communication based on the current loop communication module 700 through the isolation module 300.

[0076] In one embodiment of the present application, an indoor fan control device 1000 for an air conditioner further includes a housing, within which are disposed the indoor fan drive assembly 100, indoor controller 200, isolation module 300, rectifier module 400, switching power supply module 500, and current loop communication module 700. In other words, the indoor fan drive assembly 100, indoor controller 200, isolation module 300, rectifier module 400, switching power supply module 500, and current loop communication module 700 are integrated within the housing, thereby meeting safety protection requirements associated with the risk of refrigerant leakage.

[0077] According to an embodiment of the present invention, an indoor fan control device for an air conditioner comprises an indoor controller connected to the indoor fan drive assembly to send control signals to the indoor fan drive assembly or receive feedback signals from the indoor fan drive assembly. An isolation module is provided between the indoor controller and the indoor fan drive assembly to isolate the signals. Thus, the indoor fan control device, based on the indoor fan drive assembly, reduces application costs and improves fan operation reliability.

[0078] Corresponding to the above embodiment, the present application also proposes an indoor unit of an air conditioner.

[0079] like Figure 8 As shown, the indoor unit 2000 of the air conditioner of the present application includes the indoor fan drive assembly 100 as described above, or as shown in FIG. Figure 9As shown, the indoor unit 2000 of the air conditioner of the present application includes the above-mentioned indoor fan control device 1000.

[0080] According to the indoor unit of the air conditioner of the embodiment of the present invention, based on the above-mentioned indoor fan driving assembly or the above-mentioned indoor fan control device, the application cost of the indoor unit is reduced and the operation reliability of the indoor unit is improved.

[0081] Corresponding to the above embodiment, the present application also proposes an air conditioner.

[0082] like Figure 10 As shown, the air conditioner 10000 of the embodiment of the present application includes the indoor fan drive assembly 100 as described above, or as Figure 11 As shown, the air conditioner 10000 of the embodiment of the present application includes the indoor fan control device 1000 described above, or as shown in FIG. Figure 12 As shown, the indoor unit 2000 of the air conditioner 10000 in an embodiment of the present application is described above.

[0083] According to the air conditioner of the embodiment of the present invention, based on the above-mentioned indoor fan driving assembly or the above-mentioned indoor fan control device or the above-mentioned indoor unit, the application cost of the air conditioner is reduced and the operating reliability of the air conditioner is improved.

[0084] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0085] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0086] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0087] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An indoor fan drive assembly for an air conditioner, characterized in that: The drive assembly includes: Electric control panel; A fan controller and a fan drive module are provided on the electric control panel, wherein the output end of the fan controller is connected to the input end of the fan drive module, the output end of the fan drive module is suitable for being connected to the indoor fan, and the fan controller is configured to control the fan drive module to drive the indoor fan; A temperature detection module is provided corresponding to the fan driving module to detect the temperature of the fan driving module.

2. The drive assembly according to claim 1, characterized in that The fan drive module includes: An inverter circuit includes at least one phase bridge arm, each phase bridge arm is connected to the first direct current, and each phase bridge arm includes a connected upper bridge switch tube and a lower bridge switch tube, and the connection point is suitable for connecting to the indoor fan; At least one driver chip, each driver chip is correspondingly connected to the upper bridge switch tube and the lower bridge switch tube of one phase of the bridge arm, and each driver chip is also connected to the fan controller to control the upper switch tube and the lower bridge switch tube of the corresponding bridge arm to be turned on or off under the control of the fan controller to drive the indoor fan.

3. The drive assembly according to claim 2, characterized in that The temperature detection module is provided on any one of the at least one driving chip and is close to an upper bridge switch tube connected to the any one driving chip.

4. The drive assembly according to claim 2, wherein: The electric control board includes a first area, a second area and a third area, the second area is located between the first area and the third area, the fan controller is located in the first area, at least one driver chip is arranged sequentially in the second area, and the upper bridge switch tube and the lower bridge switch tube of at least one phase of the bridge arm are arranged sequentially in the third area.

5. The drive assembly according to any one of claims 1 to 4, characterized in that: The fan controller, the fan driving module and the temperature detection module are arranged on the top surface or the bottom surface of the electric control board.

6. An indoor fan control device for an air conditioner, characterized in that: The control device comprises: The indoor fan drive assembly according to any one of claims 1 to 5; an indoor controller connected to the indoor fan drive assembly to send a control signal to the indoor fan drive assembly or receive a feedback signal from the indoor fan drive assembly; The isolation module is provided between the indoor controller and the indoor fan drive assembly to perform signal isolation.

7. The control device according to claim 6, characterized in that The control device further comprises: a rectifier module, wherein the input end of the rectifier module is suitable for being connected to an external power supply, the output end of the rectifier module is connected to the high-voltage power supply end of the indoor fan drive assembly, and is configured to convert the first alternating current provided by the external power supply into a first direct current to power the indoor fan drive assembly; A switching power supply module, wherein the input end of the switching power supply module is connected to the output end of the rectifier module, and the output end of the switching power supply module is respectively connected to the low-voltage power supply end of the indoor fan drive assembly, the power supply end of the indoor controller and the power supply end of the isolation module, and is configured to convert the first direct current into a second direct current to power the indoor fan drive assembly, and convert it into a third direct current to power the indoor controller and the isolation module.

8. The control device according to claim 6, characterized in that The control device further includes a display component, which is connected to the indoor controller. The indoor controller is further configured to control the display component to display operating data of the indoor fan.

9. The control device according to claim 7, characterized in that: The control device further includes a current loop communication module, which is connected to the indoor controller and the external power supply respectively. The indoor controller is further configured to communicate with the outdoor controller of the air conditioner through the current loop communication module.

10. The control device according to claim 9, characterized in that: The control device further includes a housing, and the indoor fan drive assembly, the indoor controller, the isolation module, the rectifier module, the switching power supply module and the current loop communication module are arranged in the housing.

11. An indoor unit of an air conditioner, characterized in that: It comprises the indoor fan drive assembly according to any one of claims 1-5, or the indoor fan control device according to any one of claims 6-10.

12. An air conditioner, characterized in that: It comprises the indoor fan drive assembly according to any one of claims 1 to 5, or the indoor fan control device according to any one of claims 6 to 10, or the indoor unit according to claim 11.

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