Filtering unit, electric control assembly of outdoor unit, outdoor unit and air conditioner

Abstract

The utility model discloses a filtering unit, an electric control assembly of an outdoor unit, the outdoor unit and an air conditioner, the electric control assembly comprises an outdoor main control board, a filtering wiring board and an inter-board connecting line, and the outdoor main control board comprises a main control connecting port module; the filtering wiring board comprises a filtering circuit, a first connecting port module and a second connecting port module. The two ends of the inter-board connecting line are connected with the master control connecting port module and the second connecting port module respectively. The filter circuit is integrated with the first connection port module and the second connection port module in the filter wiring board, and the distance between the filter circuit and the first connection port module is very short, so that radiation interference from the outside can be effectively filtered, and the EMC performance of a product is improved; the outdoor main control board and the filtering wiring board are two different circuit boards, so that the distance between a magnetic device on the outdoor main control board and a magnetic device in a filtering circuit can be increased, electromagnetic coupling between the magnetic devices is reduced, and the EMI performance of the electric control assembly of the outdoor unit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner circuits, in particular to a filtering unit, an electronic control assembly of an outdoor unit, the outdoor unit and an air conditioner. Background Art

[0002] In the related art, some electrical devices usually use a variety of magnetic devices. For example, in an air conditioner, the electronic control assembly of the outdoor unit of the air conditioner includes a magnetic ring, a common mode inductor, a transformer, a power factor correction (PFC) inductor, and so on. With the application of high integration and miniaturization design of the air conditioner housing and electronic control, electromagnetic coupling is likely to occur between various magnetic devices. For example, between the PFC inductor and the common mode inductor, between the transformer and the common mode inductor; in addition, high-frequency magnetic devices such as PFC inductors and transformers are likely to generate electromagnetic radiation to the outside. The electromagnetic coupling and electromagnetic radiation of magnetic devices will lead to electromagnetic interference (EMI) problems of the product.

[0003] Currently, in the existing electronic control assembly of the outdoor unit, the main control board of the outdoor unit is connected to the internal and external machine connection port on the outer machine box through a connecting wire with a magnetic ring. Since the connecting wire with a magnetic ring is close to the internal and external machine connection port on the outer machine box, it is easily interfered by the radiation outside the outdoor unit, resulting in a decline in the electromagnetic susceptibility (EMS) performance of the product, that is, the miniaturization design of the product will lead to a decline in the comprehensive electromagnetic compatibility (EMC) performance. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a filtering unit, an electronic control assembly of an outdoor unit, the outdoor unit and an air conditioner, which can effectively improve the comprehensive EMC performance of the product.

[0005] In a first aspect, an embodiment of the utility model provides a filtering unit, including a filtering wiring board, a first connection port module and a second connection port module, wherein:

[0006] The filtering wiring board is provided with a filtering circuit;

[0007] The first connection port module is connected to the input end of the filtering circuit and is configured to access an externally input power signal through a first connecting wire;

[0008] The second connection port module is connected to the input end of the filtering circuit and is configured to output a filtered signal to the rear-end electronic control board through a second connecting wire.

[0009] According to the filtering unit provided by the embodiments of the present utility model, it has at least the following beneficial effects: By integrating the filtering circuit with the first connection port module and the second connection port module in the filtering wiring board, as the connection port module between the electrical equipment and the outside, the power signal input from the outside is accessed through the first connection port module. The distance between the filtering circuit and the first connection port module is very short, which can effectively filter out the external radiation interference and effectively improve the comprehensive EMC performance of the product.

[0010] According to the filtering unit provided by some embodiments of the present utility model, the EMC filtering circuit includes a common-mode inductor, and two input ends of the common-mode inductor are respectively connected to the first connection port module, and two output ends of the common-mode inductor are respectively connected to the second connection port module.

[0011] According to the filtering unit provided by some embodiments of the present utility model, the EMC filtering circuit further includes a first X capacitor, a second X capacitor, a first Y capacitor and a second Y capacitor. Two ends of the first X capacitor are respectively connected to the two input ends of the common-mode inductor, two ends of the second X capacitor are respectively connected to the two output ends of the common-mode inductor, one end of the first Y capacitor is connected to one output end of the common-mode inductor, one end of the second Y capacitor is connected to the other output end of the common-mode inductor, and the other ends of the first Y capacitor and the second Y capacitor are both grounded.

[0012] According to the filtering unit provided by some embodiments of the present utility model, the EMC filtering circuit further includes a first varistor and a second varistor. Two ends of the first varistor are respectively connected to the two input ends of the common-mode inductor, one end of the second varistor is connected to one output end of the common-mode inductor, and the other end of the second varistor is grounded.

[0013] In a second aspect, an electric control component of an outdoor unit provided by the embodiments of the present utility model includes an outdoor main control board, an inter-board connection line and the filtering unit as described in the first aspect embodiment above. The outdoor main control board includes a main control connection port module, and two ends of the inter-board connection line are respectively connected to the main control connection port module and the second connection port module.

[0014] The electronic control component of the outdoor unit provided by the embodiment of the present utility model has at least the following beneficial effects: By integrating the filtering circuit with the first connection port module and the second connection port module in the filtering wiring board as the connection port module between the outdoor unit and the indoor unit, the external unit power signal from the indoor unit is accessed through the first connection port module. The distance between the EMC filtering circuit and the first connection port module is very short, which can effectively filter out external radiation interference and improve the EMC performance of the product. The outdoor main control board and the filtering wiring board are two different circuit boards and are connected by an inter-board connection line, so that the distance between the magnetic devices on the outdoor main control board and the magnetic devices in the EMC filtering circuit can be increased, reducing the electromagnetic coupling between the magnetic devices and improving the EMI performance of the electronic control component of the outdoor unit.

[0015] In addition, it can also be understood that compared with the electronic control layout method in which the EMC filtering circuit is arranged on the outdoor main control board, the embodiment of the present utility model arranges the EMC filtering circuit on the filtering wiring board, which is equivalent to using the layout space of the connection port module between the outdoor unit and the indoor unit to place the EMC filtering circuit, thereby reducing the area of the outdoor main control board and providing an improvement space for the electronic control and product miniaturization of the outdoor unit.

[0016] According to the electronic control component provided by some embodiments of the present utility model, a PFC inductor and a transformer are arranged on the outdoor main control board, and a magnetic ring is arranged on the inter-board connection line.

[0017] According to the electronic control component provided by some embodiments of the present utility model, the outdoor main control board is further provided with a third Y capacitor and a fourth Y capacitor. One end of the third Y capacitor and one end of the fourth Y capacitor are respectively connected to the main control connection port module, and the other ends of the third Y capacitor and the fourth Y capacitor are both grounded, so that the third Y capacitor, the fourth Y capacitor and the magnetic ring form an LC filtering module.

[0018] According to the electronic control component provided by some embodiments of the present utility model, the first connection port module and the second connection port module are integrally arranged on a port component. The port component includes a base provided with a plurality of wiring seats. The first connection port module includes at least two screw-terminal wiring terminals arranged on the wiring seats, and the second connection port module includes at least two blade-type wiring terminals arranged on the wiring seats.

[0019] According to the electronic control component provided by some embodiments of the present utility model, both the screw-terminal wiring terminal and the blade-type wiring terminal extend from the base to form weldable terminals, and the filtering wiring board is provided with pads corresponding to the weldable terminals.

[0020] According to the electric control component provided by some embodiments of the present utility model, a plurality of the wiring seats on the base are arranged side by side in a row, and a row of the pads is correspondingly arranged at the edge of the filter wiring board.

[0021] In a third aspect, an embodiment of the present utility model provides an outdoor unit, including an outdoor unit box body and the electric control component described in the second aspect embodiment above, and the outdoor main control board and the filter wiring board are respectively fixed to the outdoor unit box body.

[0022] In a fourth aspect, an embodiment of the present utility model provides an air conditioner, including the outdoor unit described in the third aspect embodiment above.

[0023] According to the air conditioner provided by some embodiments of the present utility model, it further includes an indoor unit and a power supply and communication line, and the indoor unit is connected to the first connection port module of the outdoor unit through the power supply and communication line.

[0024] Other features and advantages of the present utility model will be described in the subsequent description, and, in part, will be obvious from the description, or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures specifically pointed out in the description, claims, and drawings. Description of the Drawings

[0025] The drawings are used to provide a further understanding of the technical solutions of the present utility model, and constitute a part of the description. They are used together with the embodiments of the present utility model to explain the technical solutions of the present utility model, and do not constitute a limitation to the technical solutions of the present utility model.

[0026] The present utility model will be further described below in conjunction with the drawings and embodiments;

[0027] Figure 1 is a schematic diagram of the air conditioner provided by the embodiment of the present utility model;

[0028] Figure 2 is a schematic diagram of the overall structure of the electric control component of the outdoor unit provided by the embodiment of the present utility model;

[0029] Figure 3 is a circuit schematic diagram of the electric control component of the outdoor unit provided by the embodiment of the present utility model;

[0030] Figure 4 is a circuit schematic diagram of the electric control component of the outdoor unit in the related art;

[0031] Figure 5 is a schematic diagram of the structure of the filter wiring board provided by the embodiment of the present utility model;

[0032] Figure 6It is a schematic structural diagram of the filtering power strip provided by the embodiment of the present utility model from another angle;

[0033] Figure 7 It is a schematic structural diagram of the port assembly provided by the embodiment of the present utility model. Specific embodiments

[0034] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0035] In the description of the embodiments of the present utility model, the meaning of "several" is one or more, the meaning of "multiple" is more than two, "greater than", "less than", "exceeding", etc. are understood as not including the present number, "above", "below", "within", etc. are understood as including the present number, "at least one" means one or more, and "at least one of the following" and its similar expressions refer to any combination of these items, including any combination of single items or plural items. If there is a description of "first", "second", etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] It should be noted that words such as "set", "installed", "connected", etc. in the embodiments of the present utility model should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the embodiments of the present utility model in combination with the specific content of the technical solution. For example, the term "connected" can be a mechanical connection, an electrical connection, or a connection that can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium.

[0037] It should be noted that the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0038] In some cases, in order to meet requirements such as safety regulations, waterproofing, and vibration, the electronic control board of the outdoor unit of an air conditioner is usually installed inside the outer machine box. In order to provide power and communication for the outdoor main control board, an internal and external machine connection port is usually installed on the outer machine box. One side of the internal and external machine connection port is used to connect the external power supply and communication line, and the other side of the internal and external machine connection port is used to connect the outdoor main control board. In order to meet the EMC (Electro Magnetic Compatibility) requirements, a filtering circuit is usually provided on the outdoor main control board near the electrical connection terminal, and there is a connecting line with a magnetic ring between the electrical connection terminal and the internal and external machine connection port of the outer machine box.

[0039] Among them, the electronic control components of the outdoor unit of the air conditioner usually use a variety of magnetic devices: such as magnetic rings, common mode inductors, transformers, PFC (Power Factor Correction) inductors, etc. For example, referring to Figure 4 As shown, the EMC filter circuit on the outdoor main control board is provided with a common mode inductor, and other circuits on the outdoor main control board are provided with transformers and PFC inductors, etc. With the application of high integration and miniaturization design of the air conditioner box body and electronic control, electromagnetic coupling is likely to occur between various magnetic devices, such as between the PFC inductor and the common mode inductor, between the transformer and the common mode inductor; and high-frequency magnetic devices such as PFC inductors and transformers are likely to generate electromagnetic radiation to the outside. The electromagnetic coupling and electromagnetic radiation of magnetic devices will cause EMI (Electro Magnetic Interference) interference problems of the product. And the connecting wire with a magnetic ring between the main control board of the outdoor unit and the indoor and outdoor unit connection port on the outdoor unit box is easily coupled by external radiation interference of the outdoor unit because it is close to the indoor and outdoor unit connection port of the air conditioner outdoor unit box, resulting in a decrease in the EMS (Electro Magnetic Susceptibility) immunity performance of the product, that is, the miniaturization design of the product will lead to a decrease in the comprehensive EMC performance.

[0040] Among them, electromagnetic coupling means that a changing electric field will generate a magnetic field, and a changing magnetic field will turn into an electric field. The magnetic field and the electric field complement each other and affect each other; electromagnetic radiation means that the electric field and the magnetic field that oscillate in the same direction and are perpendicular to each other transfer momentum and energy in the form of waves in space, and its propagation direction is perpendicular to the plane formed by the electric field and the magnetic field. The interaction and change of the electric field and the magnetic field generate electromagnetic waves, and the electromagnetic waves are emitted or propagated into the air to form electromagnetic radiation.

[0041] Based on this, the embodiments of the present invention provide a filtering unit, an electronic control component of an outdoor unit, an outdoor unit and an air conditioner, which can effectively improve the comprehensive EMC performance of the product.

[0042] The following further elaborates on the various embodiments of the present invention in conjunction with the accompanying drawings.

[0043] Referring to Figure 1 , Figure 1Schematic diagram of an air conditioner provided by an embodiment of the present invention. The air conditioner includes an outdoor unit 100, a power supply and communication line 200, and an indoor unit 300. The power supply and communication line 200 is respectively connected to the outdoor unit 100 and the indoor unit 300. In some embodiments, the outdoor unit 100 can obtain the outdoor unit power supply and communication signals from the indoor unit 300 through the power supply and communication line 200. For example, when current loop communication is adopted between the outdoor unit 100 and the indoor unit 300 and the power line is multiplexed, the power supply and communication line 200 may include a signal line S, a live wire L, a neutral wire N, and a ground wire PE.

[0044] Referring to Figure 2 , the filtering unit provided by the first aspect embodiment of the present invention includes a filtering wiring board 130, a first connection port module 133, and a second connection port module 131, wherein: The filtering wiring board 130 is provided with a filtering circuit 132, specifically an EMC filtering circuit; The first connection port module 133 is connected to the input end of the filtering circuit 132 and is configured to access an externally input power signal through a first connection line. For example, through Figure 2 the power supply and communication line 200 shown accesses the power signal and the communication signal; The second connection port module 131 is connected to the input end of the filtering circuit 132 and is configured to output the filtered signal to the rear-end electronic control board through a second connection line. For example, through Figure 2 the inter-board connection line 120 shown outputs the filtered signal to the rear-end electronic control board.

[0045] In the filtering unit provided by the embodiment of the present invention, by integrating the filtering circuit 132, the first connection port module 133, and the second connection port module 131 together in the filtering wiring board 130 as the connection port module between the electrical equipment and the outside, accessing the externally input power signal from the first connection port module 133, the distance between the filtering circuit 132 and the first connection port module 133 is very short, which can effectively filter out the external radiation interference and effectively improve the comprehensive EMC performance of the product.

[0046] Referring to Figure 2 , Figure 2 Schematic diagram of the structure of the electronic control assembly of the outdoor unit 100 provided by the second aspect embodiment of the present invention. The electronic control assembly of the outdoor unit 100 includes an outdoor main control board 110, an inter-board connection line 120, and a filtering wiring board 130, wherein:

[0047] The outdoor unit 100 further includes an outdoor unit housing, and both the outdoor main control board 110 and the filter wiring board 130 are fixedly installed on the outdoor unit housing; the outdoor main control board 110 is mainly used to control the operation of devices such as the compressor and the fan of the outdoor unit 100 to ensure that the air conditioner can operate efficiently and stably; the outdoor unit housing, as the outer shell of the outdoor unit 100, plays a protective role for the compressor, the fan, the outdoor main control board 110 and the filter wiring board 130, meeting requirements such as safety regulations, waterproofing and vibration; the outdoor main control board 110 is provided with a main control connection port module 111; it can be understood that the outdoor main control board 110 can be fixedly connected to the inside of the outdoor unit housing through an electric control box. For example, the electric control box is connected to the middle partition or the inner side wall inside the outdoor unit housing;

[0048] The filter wiring board 130 includes an EMC filter circuit 132, a first connection port module 133 connected to the input end of the EMC filter circuit 132, and a second connection port module 131 connected to the output end of the EMC filter circuit 132. The first connection port module 133 is used to access the outdoor unit power supply and communication signals. For example, the first connection port module 133 is connected to the indoor unit 300 through a power supply and communication line 200 to obtain the outdoor unit power supply and communication signals from the indoor unit 300; it can be understood that the filter wiring board 130 is of a printed circuit board structure. As the carrier of the EMC filter circuit 132, the second connection port module 131 and the first connection port module 133, the filter wiring board 130 is connected to the outdoor unit housing, so that the second connection port module 131 and the first connection port module 133 are both fixedly arranged on the outdoor unit housing, facilitating the connection of the first connection port module 133 to the power supply and communication line 200 outside the outdoor unit housing. The EMC filter circuit 132 can specifically be an LC filter circuit, an LCR filter circuit or other forms of filter circuits;

[0049] Both ends of the board - to - board connection line 120 are respectively connected to the main control connection port module 111 and the second connection port module 131.

[0050] It can be understood that in the related art, a filter circuit is usually integrated on the outdoor main control board. For example, as shown in Figure 4 and the two sets of connection terminals of the second connection port module and the first connection port module are connected to the outdoor unit housing. One set is connected to the external power supply and communication line 200, and the other set is connected to the outdoor main control board through a connection line with a magnetic ring. Since the connection line with a magnetic ring is close to the first connection port module, it is easily interfered by the radiation outside the outdoor unit 1, resulting in a decrease in the EMS performance of the product, that is, the design of product miniaturization will lead to a decrease in the comprehensive EMC performance.

[0051] Therefore, in the electronic control component of the outdoor unit provided by the embodiments of the present utility model, by integrating the EMC filtering circuit 132 with the first connection port module 133 and the second connection port module 131 in the filtering wiring board 130, for example, referring to Figure 2 and Figure 3 shown, as the connection port module between the outdoor unit and the indoor unit, the outdoor unit power supply and communication signals from the indoor unit are accessed through the first connection port module 133. The distance between the EMC filtering circuit 132 and the first connection port module 133 is very short, which can effectively filter out external radiation interference and improve the product's EMS performance; the outdoor main control board 110 and the filtering wiring board 130 are two different circuit boards and are connected through the inter-board connection line 120, so that the distance between the magnetic components on the outdoor main control board 110 and the magnetic components in the EMC filtering circuit 132 can be increased, reducing the electromagnetic coupling between the magnetic components and improving the EMI performance of the electronic control component of the outdoor unit.

[0052] In addition, it can also be understood that compared with the electronic control layout method in which the EMC filtering circuit 132 is arranged on the outdoor main control board 110, for example, referring to Figure 4 shown; in the embodiments of the present utility model, the EMC filtering circuit 132 is arranged on the filtering wiring board 130, for example, referring to Figure 2 and Figure 3 shown, which is equivalent to using the layout space of the connection port module between the outdoor unit and the indoor unit to place the EMC filtering circuit 132, thereby reducing the area and size of the outdoor main control board 110 and providing an improvement space for the electronic control and miniaturization of the outdoor unit. Moreover, the filtering wiring board 130 has both the EMC filtering electrical property and the mechanical property of being fixedly installed with the power supply and communication line 200 and the inter-board connection line 120.

[0053] Referring to Figure 3 , in the electronic control component and filtering unit provided by some embodiments of the present utility model, the EMC filtering circuit 132 includes a common mode inductor Lcm1. The two input ends of the common mode inductor Lcm1 are respectively connected to the first connection port module 133, and the two output ends of the common mode inductor Lcm1 are respectively connected to the second connection port module 131.

[0054] It can be understood that in this embodiment, the common-mode inductor Lcm1 adopted by the EMC filter circuit 132 can play the role of EMI filtering, and is used to suppress the electromagnetic waves generated by the high-speed signal lines from radiating outward. Specifically, when the common-mode inductor Lcm1 is working, during the process of the common-mode current flowing through the coil, due to the co-directionality of the common-mode current, a co-directional magnetic field will be generated in the coil of the common-mode inductor Lcm1, thereby increasing the inductive reactance of the coil. As a result, the coil shows a high impedance and generates a strong damping effect. Therefore, the common-mode current can be attenuated to achieve the purpose of filtering the common-mode interference signal.

[0055] Referring to Figure 3 , in the electronic control component and the filter unit provided in some embodiments of the present utility model, the EMC filter circuit 132 further includes a first X capacitor CX1, a second X capacitor CX2, a first Y capacitor CY1, and a second Y capacitor CY2. The two ends of the first X capacitor CX1 are respectively connected to the two input ends of the common-mode inductor Lcm1, the two ends of the second X capacitor CX2 are respectively connected to the two output ends of the common-mode inductor Lcm1, one end of the first Y capacitor CY1 is connected to one output end of the common-mode inductor Lcm1, one end of the second Y capacitor CY2 is connected to the other output end of the common-mode inductor Lcm1, and the other ends of the first Y capacitor CY1 and the second Y capacitor CY2 are both grounded.

[0056] In this embodiment, the first X capacitor CX1 performs filtering processing at the input end of the common-mode inductor Lcm1 and filters out differential-mode interference signals; similarly, the second X capacitor CX2 performs filtering processing at the output end of the common-mode inductor Lcm1 and filters out differential-mode interference signals; the first Y capacitor CY1 and the second Y capacitor CY2 perform filtering processing at the output end of the common-mode inductor Lcm1 and filter out common-mode interference signals.

[0057] Referring to Figure 3 , in the electronic control component and the filter unit provided in some embodiments of the present utility model, the EMC filter circuit 132 further includes a first varistor ZR1 and a second varistor ZR2. The two ends of the first varistor ZR1 are respectively connected to the two input ends of the common-mode inductor Lcm1, one end of the second varistor ZR2 is connected to one output end of the common-mode inductor Lcm1, and the other end of the second varistor ZR2 is grounded.

[0058] In this embodiment, the first varistor ZR1 and the second varistor ZR2 can protect the input end of the common-mode inductor Lcm1 against surge voltage, and absorb and suppress the surge voltage input from the external connection port module 133 to the power supply and the communication line 200. It can be understood that the varistor is a voltage-limiting protection device. Utilizing the non-linear characteristic of the varistor, when an overvoltage appears between the two poles of the varistor, the varistor can clamp the voltage to a relatively fixed voltage value, thereby achieving the protection of the subsequent circuit.

[0059] Referring to Figure 2 and Figure 3 In the electronic control assembly provided in some embodiments of the present utility model, a PFC inductor 112 and a transformer 113 are provided on the outdoor main control board 110, and a magnetic ring 121 is provided on the inter-board connection line 120.

[0060] In this embodiment, the inter-board connection line 120 with the magnetic ring 121 can reduce electromagnetic interference and improve the electromagnetic compatibility of the system. In an air-conditioning system, the electrical part of the outdoor unit 100 may generate or be affected by electromagnetic interference from other electronic devices. These interferences may affect the normal operation of the air conditioner, reduce efficiency, and may even cause failures. Among them, the functions of the magnetic ring 121 include but are not limited to the following points: First, suppressing high-frequency noise: The magnetic ring 121 can suppress the high-frequency noise on the inter-board connection line 120, and these noises may come from the electronic control unit or other electronic components inside the outdoor unit of the air conditioner; Second, reducing current surges: When the outdoor unit of the air conditioner starts or shuts down, the current may generate large surges. The magnetic ring 121 helps to smooth these current surges and protect the inter-board connection line 120 and the electronic components inside the outdoor unit; Third, improving signal transmission quality: For the inter-board connection line 120 with control signals, the magnetic ring 121 can reduce the interference during signal transmission and ensure the clarity and accuracy of the signals; Fourth, filtering function: The magnetic ring 121 can act as a low-pass filter to filter out unwanted high-frequency signals and only allow low-frequency useful signals to pass through; Fifth, enhancing system stability: By reducing electromagnetic interference, the magnetic ring 121 helps to improve the stability and reliability of the entire air-conditioning system.

[0061] Referring to Figure 3 In the electronic control assembly provided in some embodiments of the present utility model, a third Y capacitor CY3 and a fourth Y capacitor CY4 are also provided on the outdoor main control board 110. One end of the third Y capacitor CY3 and one end of the fourth Y capacitor CY4 are respectively connected to the main control connection port module 111, and the other ends of the third Y capacitor CY3 and the fourth Y capacitor CY4 are both grounded, so that the third Y capacitor CY3, the fourth Y capacitor CY4 and the magnetic ring 121 form an LC filter module.

[0062] In this embodiment, since the magnetic ring 121 on the inter-board connection line 120 can be equivalent to a small common-mode inductor, a third Y capacitor CY3 and a fourth Y capacitor CY4 are provided on the outdoor main control board 110 to form an LC filter module with the magnetic ring 121, and further form a two-stage filter circuit topology with the EMC filter circuit 132 on the filter connection board 130, so as to effectively improve the EMI filtering performance of the product.

[0063] It can be understood that in addition to being able to be as Figure 3Generally, the third Y capacitor CY3 and the fourth Y capacitor CY4 are used to form an LC filter module with the magnetic ring 121. Other LCR devices (inductor L, capacitor C, and resistor R) can also be used to form other types of filter modules with the magnetic ring 121. The embodiments of the present application do not make specific limitations on this.

[0064] Referring to Figures 5 to 7 , in the electric control component provided in some embodiments of the present utility model, the first connection port module 133 and the second connection port module 131 are integrally arranged on the port component. The port component includes a base 140 provided with a plurality of terminal blocks 141. The first connection port module 133 includes at least two screw terminal blocks 1331 arranged on the terminal blocks, and the second connection port module 131 includes at least two blade terminal blocks 1311 arranged on the terminal blocks.

[0065] In this embodiment, by integrating the first connection port module 133 and the second connection port module 131 on the port component, it is convenient to connect the inter-board connection line 120, the power supply line, and the communication line 200. Among them, the first connection port module 133 uses screw terminal blocks 1331, and the locking screws can fixedly connect the terminal of the power supply line and the communication line 200 with the screw terminal blocks 1331, and it is not easily pulled off, which is beneficial to improving the stability. The second connection port module 131 uses blade terminal blocks 1311. Since the outdoor main control board 110 and the filter wiring board 130 are both fixed on the outdoor unit housing, that is, both are located inside the outdoor unit 100, the relative position and distance between the main control connection port module 111 and the second connection port module 131 are fixed, and the inter-board connection line 120 is not easily pulled inside the outdoor unit housing. Therefore, using blade terminal blocks 1311 can facilitate the quick connection of the inter-board connection line 120 and the filter wiring board 130. Additionally, by way of example, Figures 5 to 7 the shown base 140 is provided with 6 terminal blocks 141. Among them, 3 terminal blocks 141 are provided with screw terminal blocks 1331, and the 3 screw terminal blocks 1331 constitute the first connection port module 133. Additionally, 3 terminal blocks 141 are provided with blade terminal blocks 1311, and the 3 blade terminal blocks 1311 constitute the second connection port module 131.

[0066] Referring to Figures 5 to 7 , in the electric control component provided in some embodiments of the present utility model, both the screw terminal blocks 1331 and the blade terminal blocks 1311 extend from the base 140 to form weldable terminals 1301, and the filter wiring board 130 is provided with pads 1302 corresponding to the weldable terminals 1301.

[0067] It can be understood that an EMC filter circuit 132 is provided on the filter power strip 130. Therefore, the filter power strip 130 is generally a printed circuit board. Thus, in this embodiment, both the locking screw terminal 1331 and the blade terminal 1311 are provided with weldable terminals 1301 and extend from the base 140. And pads 1302 corresponding to the weldable terminals 1301 are provided on the filter power strip 130, so that the base 140 can be inserted onto the filter power strip 130 and welded into one body, ensuring a reliable mechanical connection and electrical connection between the base 140 and the filter power strip 130.

[0068] Referring to Figures 5 to 7 , in the electric control assembly provided in some embodiments of the present utility model, a plurality of wiring seats 141 on the base 140 are arranged side by side in a row, and a row of pads 1302 are correspondingly arranged at the edge of the filter power strip 130.

[0069] In this embodiment, the plurality of wiring seats 141 are arranged side by side in a row, so that the first connection port module 133 and the second connection port module 131 are integrated into a left - right integrated structure on the base 140. In some other embodiments, the first connection port module 133 and the second connection port module 131 may also be in a left - right separated structure, or may also be in an up - down integrated structure or an up - down separated structure, etc. The embodiments of the present application do not make specific limitations in this regard; the pads 1302 are arranged at the edge of the filter power strip 130, so that the base 140 is inserted at the edge position of the filter power strip 130, and the locking screw terminals 1331 and the blade terminals 1311 are distributed along the edge of the filter power strip 130, facilitating the routing of the inter - board connection line 120, the power supply line, and the communication line 200. It should be noted that adjacent connection terminals are separated by baffles to ensure that each wiring terminal is wired separately and avoid mutual interference. It can be understood that the base 140 is made of an insulating material.

[0070] In addition, the third - aspect embodiment of the present utility model provides an outdoor unit 100, including an outdoor unit housing and the electric control assembly as in the second - aspect embodiment above. The outdoor main control board 110 and the filter power strip 130 are respectively fixed to the outdoor unit housing.

[0071] In the outdoor unit 100 provided in the embodiment of the present utility model, by integrating the EMC filter circuit 132 with the first connection port module 133 and the second connection port module 131, the filter power strip 130 is formed. For example, referring to Figure 2 and Figure 3As shown, as the connection port module between the outdoor unit and the indoor unit, the external unit power supply and communication signal from the indoor unit are accessed through the first connection port module 133. The EMC filter circuit 132 is very close to the first connection port module 133, which can effectively filter out external radiation interference and improve the EMS performance of the product. The outdoor main control board 110 and the filter wiring board 130 are two different circuit boards and are connected by an inter-board connection line 120, so that the distance between the magnetic components on the outdoor main control board 110 and the magnetic components in the EMC filter circuit 132 can be increased, reducing the electromagnetic coupling between the magnetic components and improving the EMI performance of the electrical control components of the outdoor unit.

[0072] In addition, referring to Figures 1 to 3 , an embodiment of the fourth aspect of the present invention provides an air conditioner, including the outdoor unit 100 described in the above third aspect embodiment. Referring to Figures 1 to 3 , in the air conditioner provided in some embodiments of the present invention, it further includes an indoor unit 300 and a power supply and communication line 200. The indoor unit 300 is connected to the first connection port module 133 of the outdoor unit 100 through the power supply and communication line 200.

[0073] In the air conditioner provided in the embodiment of the present invention, by integrating the EMC filter circuit 132, the first connection port module 133, and the second connection port module 131 together, a filter wiring board 130 is formed. For example, referring to Figure 2 and Figure 3 As shown, as the connection port module between the outdoor unit and the indoor unit, the external unit power supply and communication signal from the indoor unit are accessed through the first connection port module 133. The EMC filter circuit 132 is very close to the first connection port module 133, which can effectively filter out external radiation interference and improve the EMS performance of the product. The outdoor main control board 110 and the filter wiring board 130 are two different circuit boards and are connected by an inter-board connection line 120, so that the distance between the magnetic components on the outdoor main control board 110 and the magnetic components in the EMC filter circuit 132 can be increased, reducing the electromagnetic coupling between the magnetic components and improving the EMI performance of the electrical control components of the outdoor unit.

[0074] Those of ordinary skill in the art will understand that all or some of the steps and systems disclosed in the above methods can be implemented as software, firmware, hardware, and appropriate combinations thereof. Some or all of the physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or can be implemented as hardware, or can be implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium or a non-transitory medium and a communication medium or a transitory medium. As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0075] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A filtering unit, characterized in that: include: A filter wiring board, wherein the filter wiring board is provided with a filter circuit; A first connection port module, the first connection port module is connected to the input end of the filter circuit and is configured to receive an external input power signal through a first connection line; The second connection port module is connected to the input end of the filter circuit and is configured to output the filtered signal to the rear-end electric control board through a second connection line.

2. The filter unit according to claim 1, characterized in that The filter circuit is an EMC filter circuit, and the EMC filter circuit includes a common mode inductor, two input ends of the common mode inductor are respectively connected to the first connection port module, and two output ends of the common mode inductor are respectively connected to the second connection port module.

3. The filter unit according to claim 2, characterized in that The EMC filter circuit further includes a first X capacitor, a second X capacitor, a first Y capacitor and a second Y capacitor, wherein two ends of the first X capacitor are respectively connected to two input ends of the common mode inductor, two ends of the second X capacitor are respectively connected to two output ends of the common mode inductor, one end of the first Y capacitor is connected to one output end of the common mode inductor, one end of the second Y capacitor is connected to the other output end of the common mode inductor, and the other end of the first Y capacitor and the other end of the second Y capacitor are both grounded.

4. The filter unit according to claim 2, characterized in that: The EMC filter circuit also includes a first varistor and a second varistor, wherein two ends of the first varistor are respectively connected to two input ends of the common-mode inductor, one end of the second varistor is connected to an output end of the common-mode inductor, and the other end of the second varistor is grounded.

5. An electric control component of an outdoor unit, characterized in that: It comprises an outdoor main control board, an inter-board connecting line and the filtering unit according to any one of claims 1 to 4, wherein the outdoor main control board comprises a main control connection port module, and the two ends of the inter-board connecting line are respectively connected to the main control connection port module and the second connection port module.

6. The electronic control assembly according to claim 5, characterized in that: The outdoor main control board is provided with a PFC inductor and a transformer, and the inter-board connecting line is provided with a magnetic ring.

7. The electronic control assembly according to claim 6, characterized in that: The outdoor main control board is also provided with a third Y capacitor and a fourth Y capacitor, one end of the third Y capacitor and one end of the fourth Y capacitor are respectively connected to the main control connection port module, and the other end of the third Y capacitor and the other end of the fourth Y capacitor are both grounded, so that the third Y capacitor, the fourth Y capacitor and the magnetic ring constitute an LC filter module.

8. The electronic control assembly according to claim 5, characterized in that: The first connection port module and the second connection port module are integrated in a port assembly, and the port assembly includes a base provided with a plurality of wiring sockets, the first connection port module includes at least two wiring terminals with locking screws provided on the wiring sockets, and the second connection port module includes at least two plug-in wiring terminals provided on the wiring sockets.

9. The electronic control assembly according to claim 8, characterized in that: The locking screw terminal and the plug-in terminal both extend weldable terminals from the base, and the filter wiring board is provided with welding pads corresponding to the weldable terminals.

10. The electric control assembly according to claim 9, characterized in that: The plurality of wiring seats on the base are arranged side by side in a row, and a row of welding pads is correspondingly arranged at the edge of the filter wiring board.

11. An outdoor unit, characterized in that: It comprises an external housing and the electric control assembly according to any one of claims 5 to 10, wherein the outdoor main control board and the filter terminal board are respectively fixedly mounted on the external housing.

12. An air conditioner, characterized in that: Includes the outdoor unit according to claim 11.

13. The air conditioner according to claim 12, characterized in that: It also includes an indoor unit and a power supply and communication line, and the indoor unit is connected to the first connection port module of the outdoor unit through the power supply and communication line.

Images