Air conditioner outdoor unit

Abstract

The utility model discloses an air conditioner outdoor unit, which belongs to the technical field of air conditioners and comprises a shell, a compressor, an outdoor heat exchanger, a fan and an electric control board. Wherein the electric control board further comprises a substrate, a CPU (Central Processing Unit) and a PFC (Power Factor Correction) circuit; the CPU is arranged on the substrate; the PFC circuit is arranged on the substrate and comprises a PFC inductor, a PFC capacitor, a rectifier bridge and a PFC switch part; the PFC inductor and the PFC capacitor are arranged on one side, where the CPU is arranged, of the substrate, and the PFC inductor and the PFC capacitor are arranged far away from the CPU; the rectifier bridge and the PFC switch part are arranged on the side, away from the CPU, of the substrate. According to the air conditioner outdoor unit, the PFC inductor, the PFC capacitor and the CPU are arranged in the width direction of the substrate, so that the distance between the CPU and large-current strong-interference devices such as the PFC inductor is long, and the CPU is prevented from being interfered.

Description

Technical Field

[0001] The present application belongs to the technical field of air conditioning, and in particular, relates to an air conditioning outdoor unit. Background Art

[0002] The electric control module of the air conditioner outdoor unit usually includes a CPU (control unit), a fan IPM (intelligent power module), a compressor IPM, a PFC (power factor correction) circuit, etc. The above circuit structure is usually installed on a PCB (printed circuit board) to form an electric control board. The operation of the fan IPM, compressor IPM, and PFC circuit on the electric control board is realized through CPU control. Among them, the PFC circuit usually includes a rectifier bridge, a PFC inductor, a PFC capacitor, and a PFC switch part (IGBT and diode, etc.).

[0003] In the prior art, on the electronic control boards of some air conditioners, the CPU is located around high-current devices, and the CPU is easily interfered by high-current devices; on the electronic control boards of other air conditioners, the chip devices are set close to heavier devices such as PFC inductors, and small chip devices are placed around these devices, which are prone to vibration stress problems, causing damage to the devices and shortening their lifespans; on the electronic control boards of some air conditioners, there are many devices around the pins, and there are many high devices, which can easily damage other devices when welding power devices.

[0004] The electric control board generates heat when working. Although there are cases in the prior art that use low-temperature and low-pressure refrigerants to dissipate heat, and using low-temperature and low-pressure refrigerants to dissipate heat can not only achieve secondary utilization of resources, but also have good heat dissipation effects, in some air conditioners, the power devices on the electric control board are too dispersed, resulting in the inability to use the refrigerant heat dissipation solution, and the heat dissipation effect is poor.

[0005] In view of this, this application is filed. Utility Model Content

[0006] In view of the deficiencies in the related art, the present application provides an air-conditioning outdoor unit, which arranges the PFC inductor and the PFC capacitor along the width direction of the substrate with the CPU so that the CPU is far away from large-current and strong-interference devices such as the PFC inductor, thereby avoiding interference with the CPU; and arranges the rectifier bridge and the PFC switch part away from the PFC inductor and the PFC capacitor, thereby avoiding large-current and strong-interference devices such as the PFC inductor from affecting the operation of the rectifier bridge and the PFC switch part.

[0007] The present application provides an air conditioner outdoor unit, comprising:

[0008] A housing having an accommodating cavity defined therein;

[0009] A compressor is disposed in the accommodating chamber and is used to compress the refrigerant into a high-temperature and high-pressure state;

[0010] The outdoor heat exchanger is arranged in the accommodating chamber, and the compressor drives the refrigerant to flow through the outdoor heat exchanger so that the outdoor heat exchanger exchanges heat with the outdoor air;

[0011] A fan is arranged in the accommodating cavity; the air is led to the vicinity of the outdoor heat exchanger through the operation of the fan;

[0012] Electric control board, which is used to control the operation of the air conditioner outdoor unit;

[0013] Characterized in that the electric control board further comprises:

[0014] substrate;

[0015] A CPU, which is disposed on a substrate;

[0016] A PFC circuit is provided on the substrate, wherein the PFC circuit includes a PFC inductor, a PFC capacitor, a rectifier bridge, and a PFC switch part;

[0017] The PFC inductor and PFC capacitor are arranged on a side of the substrate where the CPU is arranged, and the PFC inductor and PFC capacitor are arranged away from the CPU; the rectifier bridge and PFC switch part are arranged on a side of the substrate away from the CPU, and the rectifier bridge and PFC switch part are arranged away from the PFC inductor and PFC capacitor.

[0018] This technical solution arranges the PFC inductor and the PFC capacitor along the width direction of the substrate with the CPU so that the CPU is far away from the PFC inductor and other high-current strong-interference devices, thereby avoiding interference with the CPU; by arranging the rectifier bridge and the PFC switch part away from the PFC inductor and the PFC capacitor, it can avoid that the PFC inductor and other high-current strong-interference devices affect the operation of the rectifier bridge and the PFC switch part.

[0019] In some of the embodiments, a compressor IPM is also included for controlling the operation of the compressor; the compressor IPM is arranged on the side of the substrate away from the CPU, and the compressor IPM communicates or is electrically connected to the CPU; the rectifier bridge, the PFC switch part, and the compressor IPM are arranged along the length direction of the substrate.

[0020] In some of the embodiments, a fan IPM is also included for controlling the operation of the fan; the fan IPM is arranged on the side of the substrate away from the CPU; the fan IPM communicates with or is electrically connected to the CPU; the rectifier bridge, PFC switch part, compressor IPM and fan IPM are arranged along the length direction of the substrate.

[0021] The present application provides an air conditioner outdoor unit, comprising:

[0022] A housing having an accommodating cavity defined therein;

[0023] A compressor is disposed in the accommodating chamber and is used to compress the refrigerant into a high-temperature and high-pressure state;

[0024] Compressor IPM, used to control the operation of the compressor;

[0025] The outdoor heat exchanger is arranged in the accommodating chamber, and the compressor drives the refrigerant to flow through the outdoor heat exchanger so that the outdoor heat exchanger exchanges heat with the outdoor air;

[0026] A fan is arranged in the accommodating cavity; the air is led to the vicinity of the outdoor heat exchanger through the operation of the fan;

[0027] Fan IPM, used to control the operation of the fan;

[0028] A refrigerant return pipe connected to a refrigerant inlet of the compressor;

[0029] Electric control board, which is used to control the operation of the air conditioner outdoor unit;

[0030] Characterized in that the electric control board further comprises:

[0031] substrate;

[0032] A CPU, which is disposed on a substrate;

[0033] A press machine IPM, which is arranged on a side of the substrate facing away from the CPU;

[0034] The fan IPM is arranged on the side of the base plate facing away from the CPU;

[0035] A PFC circuit is arranged on the substrate; the PFC circuit at least includes a rectifier bridge and a PFC switch part, and the rectifier bridge, the PFC switch part, the compressor IPM and the fan IPM are arranged along the length direction of the substrate;

[0036] The refrigerant return pipe is close to the side of the base plate away from the CPU, and the refrigerant return pipe passes through the rectifier bridge, PFC switch part, compressor IPM and fan IPM.

[0037] This technical solution allows the refrigerant return pipe to flow through the rectifier bridge, PFC switch part, compressor IPM and fan IPM, and uses the refrigerant in a low-temperature and low-pressure state to dissipate heat from the rectifier bridge, PFC switch part, compressor IPM and fan IPM.

[0038] In some of the embodiments, the PFC circuit further includes a PFC inductor and a PFC capacitor, and the PFC inductor and the PFC capacitor are arranged on one side of the substrate where the CPU is arranged, and the PFC inductor and the PFC capacitor are arranged corresponding to the CPU along the width direction of the substrate.

[0039] In some of the embodiments, the substrate is provided with a connecting hole, and the connecting hole is arranged corresponding to the refrigerant return pipe.

[0040] The technical solution sets a connecting hole and sets the refrigerant return pipeline corresponding to the connecting hole, so that the refrigerant return pipeline can exchange heat with the air on the side of the substrate away from the refrigerant return pipeline through the connecting hole, thereby dissipating heat for the device set on the side of the substrate away from the refrigerant return pipeline.

[0041] Some of the embodiments further include a refrigerant heat exchanger, which is disposed corresponding to the refrigerant return pipe to increase the heat exchange area of ​​the refrigerant return pipe.

[0042] This technical solution increases the heat exchange area of ​​the refrigerant return pipe and improves the heat dissipation effect of the electric control board by setting a refrigerant heat exchanger and correspondingly setting the refrigerant heat exchanger and the refrigerant return pipe.

[0043] In some of the embodiments, the PFC switch portion includes an IGBT and a diode, and the diode and the IGBT are arranged correspondingly along the width direction of the substrate.

[0044] In some of the embodiments, a surface mount device is also included. The surface mount device is arranged on a side of the substrate where the CPU is arranged. The surface mount device is arranged close to the CPU.

[0045] This technical solution arranges the SMD device close to the CPU so as to arrange the SMD device away from the PFC inductor and the PFC capacitor, thereby preventing the SMD device from being subjected to greater stress when the air conditioner is running.

[0046] In some of the embodiments, a center line is defined in the length direction of the substrate, and the center line divides the substrate into a first part and a second part, and the rectifier bridge, PFC switch part, compressor IPM and CPU are arranged in the second part; the PFC inductor and PFC capacitor are arranged in the first part.

[0047] In the above embodiment, an air conditioner outdoor unit prevents the CPU from being interfered by the PFC inductor by making the CPU and large current strong interference devices such as the PFC inductor be far away.

[0048] The air conditioner outdoor unit prevents the rectifier bridge and PFC switch parts from being affected by high-current and strong-interference devices such as the PFC inductor by placing the rectifier bridge and PFC switch parts away from the PFC inductor and PFC capacitor.

[0049] The air conditioner outdoor unit prevents the rectifier bridge and the PFC switch part from being connected to the substrate by arranging the rectifier bridge and the PFC switch part on different sides of the substrate from the PFC inductor and the PFC capacitor.

[0050] The air conditioner outdoor unit arranges the rectifier bridge and the PFC switch part close to the CPU to shorten the control line from the CPU to the rectifier bridge and the PFC switch part, thereby facilitating the connection between the CPU and the rectifier bridge and the PFC switch part.

[0051] The air conditioner outdoor unit arranges the rectifier bridge, PFC switch part, compressor IPM and fan IPM along the length direction of the substrate, and allows the refrigerant return pipe to flow through the rectifier bridge, PFC switch part, compressor IPM and fan IPM, so as to utilize the refrigerant in a low-temperature and low-pressure state to dissipate heat from the rectifier bridge, PFC switch part, compressor IPM and fan IPM.

[0052] The outdoor unit of the air conditioner is arranged away from the PFC inductor and the PFC capacitor through the chip components, so as to prevent the chip components from being subjected to greater stress when the air conditioner is running. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 The structure of the electric control board in the air conditioner outdoor unit according to some embodiments is shown. Figure 1 ;

[0054] Figure 2 The structure of the electric control board in the air conditioner outdoor unit according to some embodiments is shown. Figure 2 ;

[0055] Figure 3 The structure of the electric control board in the air conditioner outdoor unit according to some embodiments is shown. Figure 3 ;

[0056] Figure 4 The structure of the electric control board in the air conditioner outdoor unit according to some embodiments is shown. Figure 4 ;

[0057] Figure 5 The structure of the electric control board in the air conditioner outdoor unit according to some embodiments is shown. Figure 5 ;

[0058] Figure 6 The structure diagram of the electric control board in the air conditioner outdoor unit according to some embodiments is shown in FIG. Figure 1 ;

[0059] Figure 7 The structure diagram of the electric control board in the air conditioner outdoor unit according to some embodiments is shown in FIG. Figure 2 ;

[0060] Figure 8 A schematic structural diagram of a substrate in an outdoor unit of an air conditioner according to some embodiments is shown;

[0061] Fig. 9 The schematic diagram shows the structure of the assembly of the electric control board, the refrigerant return pipe and the refrigerant heat exchanger in the air conditioner outdoor unit according to some embodiments. Figure 1 ;

[0062] Fig.10 The schematic diagram shows the structure of the assembly of the electric control board, the refrigerant return pipe and the refrigerant heat exchanger in the air conditioner outdoor unit according to some embodiments. Figure 2 ;

[0063] Fig.11 The schematic diagram shows the structure of the base plate, the refrigerant return pipe and the refrigerant heat exchanger in the air conditioner outdoor unit according to some embodiments. Figure 1 ;

[0064] Fig.12 The schematic diagram shows the structure of the base plate, the refrigerant return pipe and the refrigerant heat exchanger in the air conditioner outdoor unit according to some embodiments. Figure 2 .

[0065] In the figure,

[0066] 100, substrate; 200, PFC circuit; 300, SMD device; 400, CPU; 500, fan IPM; 600, compressor IPM; 700, refrigerant heat exchanger;

[0067] 210, PFC inductor; 220, PFC capacitor; 230, rectifier bridge; 240, IGBT; 250, diode;

[0068] 101. Centerline;

[0069] 110, Part I; 120, Part II;

[0070] 121, communicating hole;

[0071] 710. Refrigerant return pipe. DETAILED DESCRIPTION

[0072] In order to make the purpose and implementation method of the present application clearer, the exemplary implementation method of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0073] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0074] The terms "first", "second", "third", etc. in the specification and claims of this application and the above drawings are used to distinguish similar or similar objects or entities, and do not necessarily mean to limit a specific order or sequence, unless otherwise noted. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances.

[0075] The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0076] The air conditioner outdoor unit provided in the embodiment of the present application can have various implementation forms. The air conditioner outdoor unit can be an outdoor unit of a vertical air conditioner, an outdoor unit of a wall-mounted air conditioner, or an outdoor unit of a duct air conditioner.

[0077] like Figure 1-Figure 12 This is a specific implementation of the air conditioner outdoor unit of the present application.

[0078] The air conditioner outdoor unit comprises a shell, and a receiving cavity is defined inside the shell.

[0079] The shell includes an air inlet, which is communicated with the accommodating cavity, and outdoor air can enter the accommodating cavity through the air inlet.

[0080] In some embodiments, the air inlet is disposed on the side or bottom of the housing.

[0081] The shell includes an air outlet, which is communicated with the accommodating chamber, and outdoor air is output from the accommodating chamber through the air outlet.

[0082] In some embodiments, the air outlet is disposed on the top or side of the housing.

[0083] It should be noted that the air outlet and the air inlet usually need to avoid being directly facing other objects, such as walls or windows, so as not to affect the heat dissipation effect of the air conditioner. This is common knowledge in the field and will not be elaborated here.

[0084] The air conditioner outdoor unit includes a compressor, which is arranged in the accommodating chamber and is used to compress the refrigerant into a high-temperature and high-pressure state.

[0085] The compressor includes a refrigerant outlet, and the refrigerant is output from the compressor through the refrigerant outlet.

[0086] It should be noted that the refrigerant output from the refrigerant outlet is a refrigerant in a high-temperature and high-pressure state.

[0087] The compressor includes a refrigerant inlet, and the refrigerant flows back to the compressor from the refrigerant inlet.

[0088] It should be noted that the refrigerant flowing back from the refrigerant inlet to the compressor is a refrigerant in a low-temperature and low-pressure state.

[0089] The compressor is connected to a refrigerant return pipe 710 , which is connected to the refrigerant inlet. The refrigerant flows back to the compressor through the refrigerant return pipe 710 .

[0090] The outdoor unit of the air conditioner includes an outdoor heat exchanger, which is arranged in the accommodating cavity. The compressor drives the refrigerant to flow through the outdoor heat exchanger, so that the outdoor heat exchanger exchanges heat with the air passing through it.

[0091] The outdoor heat exchanger, the indoor heat exchanger and the compressor together form a refrigerant circuit, and the refrigerant circulates in the refrigerant circuit to enable the air conditioner to cool or heat the indoor environment.

[0092] When the air conditioner cools the indoor environment, the outdoor heat exchanger works as a condenser and the indoor heat exchanger works as an evaporator. The refrigerant flows from the compressor into the outdoor heat exchanger and then into the indoor heat exchanger, exchanges heat with the indoor air and then flows back to the compressor. When the air conditioner heats the indoor environment, the outdoor heat exchanger works as an evaporator and the indoor heat exchanger works as a condenser. The refrigerant flows from the compressor into the indoor heat exchanger and then into the outdoor heat exchanger, exchanges heat with the outdoor air and then flows back to the compressor.

[0093] In some embodiments, the air conditioner outdoor unit may include a fan, which is disposed in the accommodating cavity; the fan is disposed close to the outdoor heat exchanger, and the fan is used to provide power for the flow of air to increase the heat exchange efficiency between the outdoor air and the outdoor heat exchanger.

[0094] The fan is operated to introduce air into the accommodating cavity from the air inlet, and then to the vicinity of the outdoor heat exchanger. After heat exchange with the outdoor heat exchanger, the air is output from the accommodating cavity from the air outlet.

[0095] The air-conditioning outdoor unit includes an electric control module, and the electric control module is used to control the operation of the air-conditioning outdoor unit.

[0096] like Figure 2 , Figure 6 and Fig. 9 As shown, the electric control module includes CPU400, which is the control center of the air conditioner outdoor unit and is responsible for receiving and interpreting instructions from the indoor unit, as well as monitoring and adjusting the operating status of the outdoor unit. CPU400 can calculate the required cooling or heating amount based on the difference between the indoor temperature and the set temperature, as well as factors such as the outdoor environment, and control the working status of the fan IPM500 and the compressor IPM600 to achieve precise temperature control and energy efficiency optimization.

[0097] like Figure 3 , Figure 5 and Figure 7 As shown, the electronic control module includes a compressor IPM600, which is used to control the operation of the compressor. The compressor IPM600 adjusts the speed and power output of the compressor according to the instructions of the CPU 400 to meet the needs of cooling or heating. The compressor IPM600 controls the start, stop, speed regulation and other functions of the compressor through electrical connection with the compressor.

[0098] like Figure 3 , Figure 5 and Figure 7 As shown, the electric control module includes a fan IPM500, which is used to control the operation of the fan; the fan IPM500 converts the instructions of the CPU 400 into motor drive signals, controls the speed and air volume of the outdoor fan, so as to ensure that the outdoor unit can effectively dissipate heat into the outdoor air.

[0099] Through the cooperation of CPU400, fan IPM500 and compressor IPM600, the cooling or heating function of the air conditioner outdoor unit is realized and a stable operating state is maintained. Among them, CPU400 plays a vital role as the control center, while fan IPM500 and compressor IPM600 act as actuators, responsible for converting the instructions of CPU400 into specific operating actions.

[0100] like Figure 1 and Figure 3 As shown, the electric control module includes a PFC circuit 200, which is used to improve the power factor of the whole machine, reduce harmonic interference to the power grid, and has a voltage boosting effect.

[0101] By providing the PFC circuit 200 , power supply efficiency and stability can be improved while harmonic interference to the power grid can be reduced.

[0102] like Figure 1-Figure 2 , Figure 5-Figure 6 and Fig. 9 As shown, the PFC circuit 200 includes a PFC inductor 210 , which is mainly used for filtering and energy storage.

[0103] Specifically, the filtering function of the PFC inductor 210 is that it can smooth the current in the circuit, reduce the ripple of the current, and make the current present a more stable waveform, which helps to reduce high-frequency noise and interference in the circuit and improve the stability of the circuit.

[0104] The energy storage function of the PFC inductor 210 is that it can convert current into magnetic field energy and store it, and then release it when needed. This energy storage function can provide instantaneous high current to meet the needs of the load and reduce the load fluctuation of the power supply.

[0105] like Figure 1-Figure 2 , Figure 5-Figure 6 and Fig. 9 As shown, the PFC circuit 200 includes a PFC capacitor 220. The main function of the PFC capacitor 220 is to compensate for the reactive power of the load device, thereby improving the power factor.

[0106] By providing the PFC capacitor 220 , the PFC capacitor 220 can absorb reactive power and convert it into useful power, which helps to reduce the invalid energy loss in the power grid and improve the efficiency of the power system.

[0107] In some embodiments, the PFC capacitor 220 can reduce harmonic pollution in the power system. The PFC capacitor 220 can absorb and suppress harmonics, making the current and voltage waveforms of the power system purer and reducing interference with other devices.

[0108] Among them, harmonics are waveforms in the power system with frequencies different from the fundamental frequency, which will cause current and voltage distortion in the power grid. This is common knowledge in the field and will not be described in detail.

[0109] In some embodiments, the PFC capacitor 220 can bear the high voltage current of the PFC circuit 200 .

[0110] The PFC capacitor 220 plays multiple roles in the PFC circuit 200 of the air conditioner outdoor unit, such as compensating reactive power, reducing harmonic pollution, bearing high voltage current, and stabilizing voltage, and plays an important role in improving power supply efficiency and stability.

[0111] like Figure 3-Figure 5 , Figure 7 As shown, the PFC circuit 200 includes a rectifier bridge 230. The function of the rectifier bridge 230 in the PFC circuit 200 of the air conditioner outdoor unit is to convert alternating current into direct current.

[0112] The PFC circuit 200 includes a PFC switch part, which is mainly used to control the flow of current to achieve power factor correction.

[0113] In some embodiments, the PFC switch part can reduce the harmonic content, reduce interference to the power grid, and protect the stable operation of the power grid.

[0114] like Figure 3-Figure 5 , Figure 7 As shown, the PFC switch part includes IGBT240, which is mainly used to adjust the size and direction of current, thereby realizing power factor correction (PFC). When IGBT240 is turned on, current can flow to the load through it; when IGBT240 is turned off, the current is blocked. By quickly switching the on and off states of IGBT240, effective control of the current can be achieved, making the waveform of the input current closer to a sine wave, thereby improving the power factor and reducing harmonic pollution of the power grid.

[0115] like Figure 3-Figure 5 , Figure 7 As shown, the PFC switch section includes a diode 250; the diode 250 of the PFC switch section generally plays the following roles:

[0116] Rectification function: Convert alternating current (AC) into direct current (DC) for use by subsequent circuits.

[0117] Freewheeling function: In a PFC switching circuit, when a switching element (such as IGBT240) is turned off, diode 250 can provide a freewheeling path so that current can continue to flow, thereby preventing the switching element from being damaged due to sudden interruption of current.

[0118] Preventing Reverse Current: Diode 250 only allows current to flow in one direction, which helps prevent reverse current from causing damage to other components in the circuit.

[0119] Protecting the circuit: In a switch mode power supply, the diode 250 can also be used to protect the circuit from damage caused by excessive voltage or overcurrent. When an abnormal condition occurs in the circuit, the diode 250 can quickly cut off the current, thereby preventing the circuit from further damage.

[0120] like Figure 1-Figure 5 , Figure 8-Figure 12 As shown, the electric control module includes a substrate 100, a CPU 400, a compressor IPM 600, a fan IPM 500 and a PFC circuit 200 are arranged on the substrate 100 and together form an electric control board.

[0121] In some embodiments, the substrate 100 is a plate-shaped structure, and the substrate 100 includes two side surfaces, which are arranged away from each other.

[0122] like Figure 2 , Figure 4 and Figure 5 As shown, a center line 101 is defined in the length direction of the substrate 100 , and the center line 101 divides the substrate 100 into a first portion 110 and a second portion 120 . The first portion 110 and the second portion 120 are arranged along the width direction of the substrate 100 .

[0123] Since components such as the PFC inductor 210 are likely to interfere with the CPU 400 , in this embodiment, the PFC inductor 210 and the PFC capacitor 220 are arranged away from the CPU 400 .

[0124] Specifically, the PFC inductor 210 and the PFC capacitor 220 are arranged in the first part 110 , and the CPU 400 is arranged in the second part 120 .

[0125] By arranging the PFC inductor 210 and the PFC capacitor 220 and the CPU 400 along the width direction of the substrate 100 , the CPU 400 is far away from high-current and strong-interference devices such as the PFC inductor 210 , thereby preventing the CPU 400 from being interfered.

[0126] In order to facilitate the connection between the CPU 400 and the rectifier bridge 230 , the IGBT 240 , the diode 250 , etc., the rectifier bridge 230 , the IGBT 240 , and the diode 250 are usually arranged close to the CPU 400 .

[0127] Since the PFC inductor 210 and other devices are likely to interfere with the components such as the rectifier bridge 230 , the IGBT 240 and the diode 250 , the PFC inductor 210 and the PFC capacitor 220 need to be arranged away from the rectifier bridge 230 , the IGBT 240 and the diode 250 .

[0128] Therefore, in this embodiment, the rectifier bridge 230 , IGBT240 , and diode 250 are arranged corresponding to the CPU 400 , and the rectifier bridge 230 , IGBT240 , and diode 250 are located in the second part 120 ; the rectifier bridge 230 , IGBT240 , and diode 250 are arranged on the side of the substrate 100 away from the CPU 400 .

[0129] It should be noted that the CPU 400 , the rectifier bridge 230 , the IGBT 240 , and the diode 250 are located in the second part 120 , and the CPU 400 , the rectifier bridge 230 , the IGBT 240 , and the diode 250 are located on different sides of the substrate 100 , which can make the control line from the CPU 400 to the rectifier bridge 230 , the IGBT 240 , and the diode 250 shorter, making it convenient to connect the CPU 400 with the rectifier bridge 230 , the IGBT 240 , and the diode 250 .

[0130] like Figure 1 , Figure 6 and Fig. 9 As shown, the electric control module further includes a surface mount device 300 , which is disposed on a side of the substrate 100 where the CPU 400 is disposed, and the surface mount device 300 is disposed close to the CPU 400 .

[0131] Since the PFC inductor 210 and the PFC capacitor 220 are heavy, the SMD device 300 is placed close to the CPU 400 and away from the PFC inductor 210 and the PFC capacitor 220. When the air conditioner is running, the operation of the compressor will cause the whole machine to vibrate, and the electronic control board will vibrate accordingly. The vibration of the heavier components on the electronic control board has a greater impact on the SMD components. This placement method prevents the SMD device 300 from being subjected to greater stress.

[0132] It should be noted that the press machine IPM600 is disposed on a side of the substrate 100 away from the CPU 400 , and the press machine IPM600 is disposed in the second portion 120 .

[0133] The fan IPM500 is disposed on a side of the base plate 100 away from the CPU 400 , and the fan IPM500 is disposed in the second portion 120 .

[0134] In some embodiments, the wind turbine IPM 500 is configured in plurality, and at least one wind turbine IPM 500 is disposed in the second portion 120 .

[0135] In some embodiments, the PFC inductor 210 and the PFC capacitor 220 may be close to the compressor IPM600 module and the fan IPM500 module to better filter out interference on the DC bus.

[0136] Since the PFC inductor 210 and the PFC capacitor 220 are relatively large in size, if the PFC inductor 210 and the PFC capacitor 220 are relatively close to the rectifier bridge 230 , the IGBT 240 and the diode 250 , it may be difficult to connect the power devices such as the rectifier bridge 230 , the IGBT 240 and the diode 250 to the substrate 100 .

[0137] In this embodiment, the solder joints of power devices such as the rectifier bridge 230, IGBT 240 and diode 250 are sufficiently far away from relatively large devices such as the PFC inductor 210 and the PFC capacitor 220, so that the processing party can use local wave soldering equipment to avoid processing defects caused by manual soldering.

[0138] In some embodiments, power devices such as the rectifier bridge 230 , the IGBT 240 , and the diode 250 are disposed on different sides of the substrate 100 correspondingly to the PFC inductor 210 and the PFC capacitor 220 .

[0139] In some embodiments, power devices such as the rectifier bridge 230 , the IGBT 240 , and the diode 250 are welded to the substrate 100 .

[0140] In order to facilitate welding, power devices such as the rectifier bridge 230 , the IGBT 240 and the diode 250 are placed close to each other.

[0141] Since the electronic control board generates heat when the air conditioner outdoor unit is working, in order to facilitate heat dissipation, in this embodiment, the refrigerant in the low temperature and low pressure state in the refrigerant return pipe 710 is used to dissipate the heat of the rectifier bridge 230, IGBT240, diode 250 compressor IPM600 and fan IPM500.

[0142] Specifically, the rectifier bridge 230, the PFC switch part, the compressor IPM600 and the fan IPM500 are arranged along the length direction of the substrate 100, and the refrigerant return pipe 710 is set through the rectifier bridge 230, the PFC switch part, the compressor IPM600 and the fan IPM500.

[0143] In some embodiments, the refrigerant return pipe 710 passes through the rectifier bridge 230 , the PFC switch part, the compressor IPM 600 and the fan IPM 500 along the length direction of the base plate 100 .

[0144] In some embodiments, the diode 250 and the IGBT 240 are disposed correspondingly along the width direction of the substrate 100 .

[0145] like Figure 9-12 As shown, the air-conditioning outdoor unit includes a refrigerant heat exchanger 700 , and the refrigerant heat exchanger 700 is arranged corresponding to the refrigerant return pipe 710 to increase the heat exchange area of ​​the refrigerant return pipe 710 .

[0146] like Fig.11 As shown, the substrate 100 is provided with a connecting hole 121, and the connecting hole 121 is arranged corresponding to the refrigerant return pipe 710, so that the refrigerant return pipe 710 can exchange heat with the air on the side of the substrate 100 away from the refrigerant return pipe 710 through the connecting hole 121, thereby dissipating heat for the device arranged on the side of the substrate 100 away from the refrigerant return pipe 710.

[0147] In some embodiments, a plurality of connecting holes 121 are provided, and the plurality of connecting holes 121 are provided corresponding to the diode 250 and the IGBT 240 .

[0148] In some embodiments of the present application, the air conditioner indoor unit includes an electric control box, in which the electric control board is installed, and the electric control box is arranged in the accommodating cavity. The electric control box is arranged to fix the electric control board to ensure the stability of the electric control board during operation and prevent the electric control board from shaking.

[0149] In some embodiments, one side of the substrate 100 where the CPU 400, PFC inductor 210, and PFC capacitor 220 are arranged is arranged toward the opening of the electric control box, and one side of the substrate 100 where the rectifier bridge 230, IGBT 240, diode 250, compressor IPM 600, and fan IPM 500 are arranged is arranged away from the opening of the electric control box.

[0150] In some embodiments, a side of the substrate 100 facing the opening of the electric control box is defined as a front side of the substrate 100 , and a side of the substrate 100 facing away from the opening of the electric control box is defined as a back side of the substrate 100 .

[0151] The air conditioner outdoor unit arranges the PFC inductor 210 and the PFC capacitor 220 in the first part 110 and arranges the CPU 400 in the second part 120 so that the CPU 400 is far away from high-current strong-interference devices such as the PFC inductor 210, thereby preventing the CPU 400 from being interfered.

[0152] The air conditioner outdoor unit arranges the rectifier bridge 230 and the PFC switch part in the second part 120 so that the rectifier bridge 230 and the PFC switch part are arranged away from the PFC inductor 210 and the PFC capacitor 220, thereby preventing high-current strong interference devices such as the PFC inductor 210 from affecting the operation of the rectifier bridge 230 and the PFC switch part.

[0153] The air conditioner outdoor unit prevents the rectifier bridge 230 and the PFC switch part from being welded to the substrate 100 by arranging the rectifier bridge 230 and the PFC switch part on different sides of the substrate 100 from the FC inductor 210 and the PFC capacitor 220 .

[0154] The air conditioner outdoor unit arranges the rectifier bridge 230, the PFC switch part and the CPU 400 in the second part 120 to shorten the control line from the CPU 400 to the rectifier bridge 230 and the PFC switch part, thereby facilitating the connection between the CPU 400 and the rectifier bridge 230 and the PFC switch part.

[0155] The air conditioner outdoor unit arranges the rectifier bridge 230, the PFC switch part, the compressor IPM600 and the fan IPM500 along the length direction of the substrate 100, and allows the refrigerant return pipe 710 to flow through the rectifier bridge 230, the PFC switch part, the compressor IPM600 and the fan IPM500, so as to utilize the refrigerant in a low-temperature and low-pressure state to dissipate heat from the rectifier bridge 230, the PFC switch part, the compressor IPM600 and the fan IPM500.

[0156] The air conditioner outdoor unit arranges the SMD device 300 in the second portion 120 so that the SMD device 300 is arranged away from the PFC inductor 210 and the PFC capacitor 220 , thereby preventing the SMD device 300 from being subjected to greater stress when the air conditioner is running.

[0157] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0158] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. An air conditioner outdoor unit, comprising: A housing having an accommodating cavity defined therein; A compressor, which is disposed in the accommodating chamber; An outdoor heat exchanger is disposed in the accommodating chamber, and the compressor drives the refrigerant to flow through the outdoor heat exchanger so that the outdoor heat exchanger exchanges heat with outdoor air; A fan, which is arranged in the accommodating cavity and is used to lead air to the vicinity of the outdoor heat exchanger; An electric control panel, the electric control panel is used to control the operation of the air conditioner outdoor unit; Characterized in that the electric control board further comprises: substrate; A CPU, which is disposed on the substrate; A PFC circuit, which is arranged on the substrate, and the PFC circuit includes a PFC inductor, a PFC capacitor, a rectifier bridge, and a PFC switch part; The PFC inductor and the PFC capacitor are arranged on a side of the substrate where the CPU is arranged, and the PFC inductor and the PFC capacitor are arranged away from the CPU; the rectifier bridge and the PFC switch part are arranged on a side of the substrate away from the CPU, and the rectifier bridge and the PFC switch part are arranged away from the PFC inductor and the PFC capacitor.

2. The air conditioner outdoor unit according to claim 1, characterized in that: It also includes a compressor IPM for controlling the operation of the compressor; the compressor IPM is arranged on the side of the substrate away from the CPU, and the compressor IPM is in communication or electrically connected with the CPU; the rectifier bridge, the PFC switch part, and the compressor IPM are arranged along the length direction of the substrate.

3. The air conditioner outdoor unit according to claim 2, characterized in that: It also includes a fan IPM for controlling the operation of the fan; the fan IPM is arranged on the side of the substrate away from the CPU; the fan IPM is in communication or electrically connected with the CPU; the rectifier bridge, the PFC switch part, the compressor IPM and the fan IPM are arranged along the length direction of the substrate.

4. An air conditioner outdoor unit, comprising: A housing having an accommodating cavity defined therein; A compressor, which is disposed in the accommodating chamber; An outdoor heat exchanger is disposed in the accommodating chamber, and the compressor drives the refrigerant to flow through the outdoor heat exchanger so that the outdoor heat exchanger exchanges heat with outdoor air; A fan, which is arranged in the accommodating cavity and is used to lead air to the vicinity of the outdoor heat exchanger; A fan IPM, used to control the operation of the fan; a refrigerant return pipe connected to the refrigerant inlet of the compressor; An electric control panel, the electric control panel is used to control the operation of the air conditioner outdoor unit; Characterized in that the electric control board further comprises: substrate; A CPU, which is disposed on the substrate; A press machine IPM, which is arranged on a side of the substrate away from the CPU; A fan IPM, which is arranged on a side of the substrate away from the CPU; A PFC circuit is provided on the substrate; the PFC circuit comprises at least a rectifier bridge and a PFC switch part, and the rectifier bridge, the PFC switch part, the compressor IPM and the fan IPM are arranged along the length direction of the substrate; The refrigerant return pipe is close to the side of the substrate away from the CPU, and the refrigerant return pipe passes through the rectifier bridge, the PFC switch part, the compressor IPM and the fan IPM.

5. The air conditioner outdoor unit according to claim 4, characterized in that: The PFC circuit further includes a PFC inductor and a PFC capacitor. The PFC inductor and the PFC capacitor are arranged on a side of the substrate where the CPU is arranged. The PFC inductor and the PFC capacitor are arranged corresponding to the CPU along the width direction of the substrate.

6. The air conditioner outdoor unit according to claim 4, characterized in that: The substrate is provided with a communication hole, and the communication hole is arranged corresponding to the refrigerant return pipe.

7. The air conditioner outdoor unit according to claim 4, characterized in that: It also includes a refrigerant heat exchanger, which is located on a side of the substrate away from the CPU and is arranged corresponding to the refrigerant return pipe.

8. The air conditioner outdoor unit according to any one of claims 1 to 7, characterized in that: The PFC switch part includes an IGBT and a diode, and the diode and the IGBT are arranged correspondingly along the width direction of the substrate.

9. The air conditioner outdoor unit according to any one of claims 1 to 7, characterized in that: It also includes a patch device, which is arranged on a side of the substrate where the CPU is arranged and close to the CPU.

10. The air conditioner outdoor unit according to claim 3 or 5, characterized in that: The substrate is defined by a center line in the length direction, and the center line divides the substrate into a first part and a second part. The PFC inductor and the PFC capacitor are arranged in the first part; the rectifier bridge, the PFC switch part, the compressor IPM and the CPU are arranged in the second part.

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