CN212339572U - Air conditioner electric control board and air conditioner - Google Patents
Air conditioner electric control board and air conditioner Download PDFInfo
- Publication number
- CN212339572U CN212339572U CN202020641186.XU CN202020641186U CN212339572U CN 212339572 U CN212339572 U CN 212339572U CN 202020641186 U CN202020641186 U CN 202020641186U CN 212339572 U CN212339572 U CN 212339572U
- Authority
- CN
- China
- Prior art keywords
- module
- power supply
- direct current
- air conditioner
- rectifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses an automatically controlled board of air conditioner and air conditioner, the automatically controlled board of air conditioner include printed circuit board and a plurality of circuit module, printed circuit board electric connection respectively circuit module, and each circuit module fixed set up in on the printed circuit board. A plurality of circuit modules are electrically connected and fixedly arranged on the printed circuit board, and an air-conditioning electric control board is combined by the connection among the circuit modules, so that the occupied space of the air-conditioning electric control board is saved, and the air-conditioning electric control board is convenient to install in an air conditioner.
Description
Technical Field
The utility model relates to the technical field that the air conditioner was made especially involves an automatically controlled board of air conditioner and air conditioner.
Background
The control system that comprises a plurality of automatically controlled boards of air conditioner is generally set to current air conditioner, and a plurality of automatically controlled boards of air conditioner are installed, and wiring each other is troublesome, consuming time in the production installation, and occupy the air conditioner space.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatically controlled board of air conditioner and air conditioner aims at solving the big problem of automatically controlled board occupation space of air conditioner.
The utility model provides an automatically controlled board of air conditioner, including printed circuit board and a plurality of circuit module, printed circuit board electric connection respectively circuit module, and each circuit module is fixed set up in on the printed circuit board.
Furthermore, the circuit module comprises a power supply filtering module, a rectifier, a capacitance filtering module, a direct current fan driving module and a main control module;
the power supply filtering module is used for electromagnetically filtering an external alternating current input power supply, one end of the power supply filtering module is connected with the input power supply, and the other end of the power supply filtering module is respectively connected with the input end of the rectifier and the main control module;
the output positive end of the rectifier is connected with the positive end of the capacitance filtering module, the output negative end of the rectifier is connected with the negative end of the capacitance filtering module to form a main circuit loop, wherein the rectifier is used for converting an alternating current power supply transmitted from the power supply filtering module into a direct current power supply, and the capacitance filtering module is used for converting a pulsating output direct current power supply of the rectifier into a flat direct current power supply;
the output end of the main circuit is respectively connected with the input end of the direct current fan driving module and the main control module, the output end of the direct current fan driving module is connected with an external motor, and a direct current power supply passing through the main control module is converted into a driving power supply for supplying power to a chip of the main control module and an intelligent power module of the direct current fan driving module.
Further, the direct current fan driving module comprises a first direct current fan driving module and a second direct current fan driving module;
the output end of the main circuit is respectively connected with the input end of the first direct current fan driving module and the input end of the second direct current fan driving module;
the output end of the first direct current fan driving module is correspondingly connected with a first fan, the output end of the second direct current fan driving module is correspondingly connected with a second fan, and the first fan and the second fan are external fans.
Furthermore, the output end of the main circuit is connected with a switching power supply circuit of the main control module, the switching power supply circuit converts a received direct-current power supply into a first direct-current power supply and a second direct-current power supply, wherein the first direct-current power supply and the second direct-current power supply are the driving power supplies;
the first direct current power supply supplies power to the chip of the main control module, and the second direct current power supply and the direct current power supply at the input end of the direct current fan driving module supply power to the intelligent power module of the direct current fan driving module.
Furthermore, the capacitance filtering module is arranged in the middle of the front side of the printed circuit board;
the main control module is fixed on the front face of the printed circuit board and located on one side of the capacitance filtering module, and the direct current fan driving module is fixed on the front face of the printed circuit board and located on one side, far away from the main control module, of the capacitance filtering module.
Furthermore, the heat dissipation device also comprises a heat dissipation sheet which is fixedly arranged on the back surface of the printed circuit board.
Further, the rectifier includes an insert single phase bridge rectifier;
the rectifier bridge of the plug-in single-phase bridge rectifier is arranged between the printed circuit board and the radiating fin and fixedly connected with the radiating fin.
Further, the rectifier bridge structure further comprises a first fixing column, a first through hole capable of penetrating into the first fixing column is formed in the radiating fin, the first through hole is located at the position, projected on the radiating fin, of the rectifier bridge, and the first fixing column penetrates into the first through hole to fix the rectifier bridge on the radiating fin.
Further, the direct current fan driving module comprises the intelligent power module and an intelligent power module driving circuit, and the intelligent power module driving circuit is used for driving the external motor;
the intelligent power module is fixedly installed on the back face of the printed circuit board and avoids the arrangement of the rectifier, and the intelligent power module is fixedly connected with the radiating fin.
The intelligent power module further comprises a second fixing column, a second through hole capable of penetrating into the second fixing column is formed in the heat dissipation sheet, the second through hole is located at a position where the intelligent power module is orthographically projected on the heat dissipation sheet, and the second fixing column penetrates into the second through hole to fix the intelligent power module on the heat dissipation sheet.
The utility model also provides an air conditioner, including installing in indoor organism, still include the aforesaid the automatically controlled board of air conditioner, the automatically controlled board of air conditioner set up in on the organism.
The utility model discloses an automatically controlled board of air conditioner and air conditioner, the beneficial effect who has does, with a plurality of circuit module electric connection and fixed the setting on printed circuit board, and through the connection between each circuit module, make up into the automatically controlled board of an air conditioner, save the occupation space of the automatically controlled board of air conditioner, and convenient installation in the air conditioner.
Drawings
Fig. 1 is a front view of an electric control board of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic view of an electric control board of an air conditioner according to an embodiment of the present invention;
fig. 3 is a schematic view of an electric control board of an air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electric control board of an air conditioner according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, rear, front and back … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is also changed accordingly, and the connection may be a direct connection or an indirect connection.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-4, an embodiment of the present invention provides an air conditioner electric control board, which includes a printed circuit board 1 and a plurality of circuit modules, wherein each circuit module is electrically connected to the printed circuit board 1, and each circuit module is fixedly disposed on the printed circuit board 1.
In this embodiment, the air conditioner electric control board is an internal unit circuit board for integrating all circuit modules of an air conditioner internal unit; printed circuit boards (also called Printed circuit boards, commonly-used PCBs) are providers of electrical connections for electronic components, are important electronic components, support bodies for electronic components, and carriers for electrical connections for electronic components. The circuit modules are obtained by integrating required electronic components according to the module functions, each circuit module is electrically connected with the printed circuit board 1, and each circuit module is fixedly arranged on the printed circuit board 1 so as to realize the combination of an air conditioner electric control board and save the occupied space of the air conditioner electric control board.
In this embodiment, the circuit module includes a power filter module 10, a rectifier 20, a capacitor filter module 30, a dc fan driving module 40, and a main control module 50; the power supply filtering module 10 is used for electromagnetically filtering an external alternating current input power supply 3, one end of the power supply filtering module 10 is connected with the external input power supply 3, and the other end of the power supply filtering module 10 is respectively connected with the input end of the rectifier 20 and the main control module 50; the positive output end of the rectifier 20 is connected to the positive end of the capacitive filtering module 30, and the negative output end of the rectifier 20 is connected to the negative end of the capacitive filtering module 30 to form a main circuit loop, wherein the rectifier 20 is used for converting an alternating current power transmitted from the power filtering module 10 into a direct current power, and the capacitive filtering module 30 is used for converting a pulsating output direct current power of the rectifier 20 into a flat direct current power; the output end of the main circuit is respectively connected with the input end of the direct current fan driving module 40 and the main control module 50, the output end of the direct current fan driving module 40 is connected with an external motor, and a direct current power supply passing through the main control module 50 is converted into a driving power supply for supplying power to a chip of the main control module 50 and an intelligent power module of the direct current fan driving module 40.
In this embodiment, the circuit module specifically includes a power filter module 10, a rectifier 20, a capacitor filter module 30, a dc fan driving module 40, and a main control module 50. An external input power supply 3 is connected with a power supply filtering module 10, the input power supply 3 is a 220V alternating current power supply, an input terminal of the power supply filtering module 10 is a 250 terminal, and plug-ins are a zero line jack and a live line jack; the power supply filtering module 10 performs double filtering on the input 220V alternating current, where the double filtering is performed through a Common mode inductor (Common mode Choke), which is commonly used in a switching power supply to filter Common mode electromagnetic interference signals. In the board design, the common mode inductor also plays a role in EMI filtering, and is used for inhibiting electromagnetic waves generated by the high-speed signal line from radiating and emitting outwards. The common mode inductance is essentially a bi-directional filter: on one hand, common mode electromagnetic interference on a signal line is filtered, on the other hand, electromagnetic interference which is not emitted outwards is restrained, and normal work of other electronic equipment under the same electromagnetic environment is prevented from being influenced.
The double-filtered ac power supply is connected to the input terminal of the rectifier 20 for rectification by the rectifier 20, and is further connected to the main control module 50 for supplying power to the main control module 50. The positive output terminal of the rectifier 20 is connected to the positive terminal of the capacitive filtering module 30, and the negative output terminal of the rectifier 20 is connected to the negative terminal of the capacitive filtering module 30, so as to form a main circuit loop. The rectifier 20 converts the ac power input from the power filter module 10 into a dc power, and the capacitor filter module 30 converts the pulsating dc power rectified by the rectifier 20 into a flat dc power. In the present embodiment, the capacitor filter module 30 is composed of three electrolytic capacitors.
The output end of the main circuit is respectively connected with the input end of the direct current fan driving module 40 and the main control module 50, the output end of the direct current fan driving module 40 is connected with an external motor, and a direct current power supply passing through the main control module 50 is converted into a driving power supply for supplying power to a chip of the main control module 50 and the intelligent power module 401 of the direct current fan driving module 40. In an embodiment, a specified driving power supply is preset according to a driving power supply required by a chip of the main control module 50 and a driving power supply required by the intelligent power module 401 of the dc fan driving module 40, and when the dc power supply passing through the main control module 50 is converted according to the preset specified driving power supply, a driving power supply for supplying power to the electrical core of the main control module 50 and a driving power supply for supplying power to the intelligent power module 401 are obtained. In one embodiment, the chips used by the main control module 50 need 12V dc power and 5V dc power respectively for power supply, and the intelligent power module 401 of the dc fan driving module 40 needs 15V dc power for power supply, for example, if the dc power at the output end of the main circuit is 310V, the switching power supply 51 of the main control module 50 converts 310VDC into 15VDC, 12VDC and 5VDC respectively, and connects the corresponding chips and the intelligent power module 401 respectively for power supply.
In this embodiment, the dc fan driving module 40 includes a first dc fan driving module 41 and a second dc fan driving module 42; the output end of the main circuit is respectively connected with the input end of the first direct current fan driving module 41 and the input end of the second direct current fan driving module 42; the output end of the first direct current fan driving module 41 is correspondingly connected with the first fan 5, the output end of the second direct current fan driving module 42 is correspondingly connected with the second fan 6, and the first fan 5 and the second fan 6 are external fans.
In the embodiment, the air conditioner electric control board includes a first dc fan driving module 41 and a second dc fan driving module 42 for driving the external dc fan, respectively, and the first dc fan driving module 41 drives the first dc motor 5 and the second dc fan driving module 42 drives the second dc motor 6. As in a specific embodiment, the output terminals of the main circuit are respectively connected to the input terminals of the first dc fan driving module 41 and the second dc fan driving module 42 and respectively provide 310VDC, the output terminal of the first dc fan driving module 41 is connected to the external first fan 5, the output terminal of the second dc fan driving module 42 is connected to the external second fan 6, and the main control module 50 provides 15VDC for the intelligent power module of the first dc fan driving module 41 and also provides 15VDC for the intelligent power module of the second dc fan driving module 42, so that the first fan 5 operates by supplying power to the first dc fan driving module 41 through 310VDC and 15VDC, and the second dc fan driving module 42 operates by supplying power to 310VDC and 15 VDC.
In this embodiment, the output end of the main circuit is connected to the switching power supply 51 circuit of the main control module 50, and the switching power supply 51 circuit converts the received dc power supply into a first dc power supply and a second dc power supply, where the first dc power supply and the second dc power supply are driving power supplies; the first dc power supply supplies power to the chip of the main control module 50, and the second dc power supply and the dc power supply at the input end of the dc fan driving module 40 supply power to the intelligent power module 401 of the dc fan driving module 40. For example, in a specific embodiment, the chips used by the main control module 50 respectively need 12V dc power and 5V dc power for power supply, and the 12V dc power and the 5V dc power are the first dc power supply; if the direct current at the output end of the main circuit is 310V, the switching power supply 51 of the main control module 50 converts 310VDC into 15VDC, 12VDC and 5VDC respectively, the obtained 12VDC and 5VDC are respectively corresponding to the chips used by the main control module 50 for supplying power, and the obtained 15VDC and the direct current power supply 310VDC at the input end of the direct current fan driving module 40 are used for supplying power to the intelligent power module 401 of the direct current fan driving module 40, so that the direct current fan connected to the direct current fan driving module 40 operates.
In the present embodiment, the capacitive filtering module 30 is disposed in the middle of the front surface of the printed circuit board 1; the main control module 50 is fixed on the front surface of the printed circuit board 1 and located on one side of the capacitive filtering module 30, and the dc fan driving module 40 is fixed on the front surface of the printed circuit board 1 and located on one side of the capacitive filtering module 30 away from the main control module 50. The capacitor filter module 30, the main control module 50, the direct current fan driving module 40, the power filter module 10 and the rectifier 20 are fixed on the printed circuit board 1, so that the volume of the indoor machine body 100 occupied by the air conditioner electric control board can be effectively reduced, and the circuit modules are electrically connected according to the stated circuit connection relation.
In the embodiment, the heat dissipation device further comprises a heat dissipation plate 2, and the heat dissipation plate 2 is fixedly arranged on the back surface of the printed circuit board 1. The radiating fins 2 are arranged for radiating heat, and radiating efficiency is improved.
In the present embodiment, the rectifier 20 comprises a plug-in single phase bridge rectifier; the rectifier bridge 201 of the plug-in single-phase bridge rectifier is arranged between the printed circuit board 1 and the radiating fin 2, and the rectifier bridge 201 is fixedly connected with the radiating fin 2.
In the present embodiment, the rectifier 20 is a single-phase rectifier, which is composed of a plug-in single-phase bridge rectifier to convert the ac power input by the power filter module 10 into dc power. The rectifier bridge 201 of the single-phase bridge rectifier of plug-in components is fixedly installed on the back of the printed circuit board 1, and one end, far away from the printed circuit board, of the rectifier bridge 201 is fixedly connected with the radiating fins 2, namely, the rectifier bridge 201 is arranged between the printed circuit board 1 and the radiating fins 2, so that the heat of the rectifier bridge 201 is radiated to the radiating fins 2, the radiating effect of the rectifier bridge 201 is enhanced, and further the radiating effect of the rectifier 20 is enhanced.
In this embodiment, still include first fixed column, be provided with the first through-hole 21 that can penetrate first fixed column on the fin 2, first through-hole 21 is located rectifier bridge 201 orthographic projection position on fin 2, and first fixed column penetrates first through-hole 21 and is fixed in rectifier bridge 201 on fin 2.
In this embodiment, first fixed column includes bolt, screw etc. is provided with the first through-hole 21 that the first fixed column of adaptation penetrates on fin 2, and first through-hole 21 sets up in rectifier bridge 201 orthographic projection position department on fin 2, and first fixed column is worn to advance and is fixed in rectifier bridge 201 on fin 2 in first through-hole 21, can effectually be fixed in rectifier bridge 201 and dispel the heat on fin 2. In a specific embodiment, a fixing through hole is formed in the rectifier bridge 201, and a bolt is sequentially inserted into the fixing through hole and the first through hole 21 and fixed in the first through hole 21, so that the rectifier bridge 201 is fixed on the heat sink 2 to dissipate heat.
In this embodiment, the dc fan driving module 40 includes an intelligent power module 401 and an intelligent power module driving circuit, where the intelligent power module 401 driving circuit is used to drive an external motor; the intelligent power module 401 is fixedly mounted on the back of the printed circuit board 1 and arranged to avoid the rectifier 20, and the intelligent power module 401 is fixedly connected with the heat sink 2.
An intelligent Power module, also called ipm (intelligent Power module), is an advanced Power switching device, and has the advantages of GTR (large Power transistor) high current density, low saturation voltage and high voltage resistance, and the advantages of MOSFET high input impedance, high switching frequency and low driving Power. The built-in drive and protection circuit of the IPM ensures that a system hardware circuit is simple and reliable, shortens the system development time and also improves the self-protection capability under the fault. The intelligent power module comprises an Insulated Gate Bipolar Transistor (IGBT), which is a composite fully-controlled voltage-driven power semiconductor device consisting of a Bipolar Junction Transistor (BJT) and a Metal Oxide Semiconductor (MOS), and has the advantages of both high input impedance of the MOSFET and low conduction voltage drop of the GTR. The GTR saturation voltage is reduced, the current carrying density is high, but the driving current is large; the MOSFET has small driving power, high switching speed, large conduction voltage drop and small current carrying density. The IGBT integrates the advantages of the two devices, and has small driving power and reduced saturation voltage. The method is very suitable for being applied to the fields of current transformation systems with direct-current voltage of 600V or more, such as alternating-current motors, frequency converters, switching power supplies, lighting circuits, traction transmission and the like. In this embodiment, the dc fan driving module 40 includes an intelligent power module 401, and the intelligent power module 401 includes an igbt, and more specifically, the dc power is converted into a driving power for supplying power to the igbt through the switching power supply 51 of the main control module 50, and the driving power and the dc power at the input end of the dc fan driving module 40 supply power to the igbt in the intelligent power module 401.
In this embodiment, the heat sink further includes a second fixing column, the heat sink 2 is provided with a second through hole 22 through which the second fixing column can be inserted, the second through hole 22 is located at a position where the smart power module 401 is orthographically projected on the heat sink 2, and the second fixing column penetrates the second through hole 22 to fix the smart power module 401 on the heat sink 2.
In this embodiment, the second fixing column may be the same as the first fixing column, and also includes a bolt, a screw, and the like, a second through hole 22 that the second fixing column can be adapted to penetrate is provided on the heat sink 2, the second through hole 22 is provided at a position where the smart power module 401 is orthographically projected on the heat sink 2, the second fixing column penetrates into the second through hole 22 to fix the smart power module 401 on the heat sink 2, and the smart power module 401 can be effectively fixed on the heat sink 2 to dissipate heat. In a specific embodiment, the intelligent power module 401 is provided with a mounting through hole, and a 3MM bolt is sequentially inserted into the mounting through hole and the second through hole 22 and fixed in the second through hole 22, so that the intelligent power module 401 is fixed on a heat sink, and the heat dissipation efficiency is improved; the first dc fan driving module 41 is provided with an intelligent power module corresponding thereto, and the second dc fan driving module 42 is also provided with an intelligent power module corresponding thereto.
In this embodiment, the main control module 50 is disposed above the front surface of the printed circuit board 1, and is used to provide external communication, temperature acquisition, interfaces for controlling various valves, and an LED display circuit. The LED display circuit is external, and display is realized by leading out a control signal to the external display circuit. The valve body control part of the main control circuit of the main control module 50 is located at the right upper part of the front surface of the printed circuit board 1, and the output alternating current of the power supply filtering module 10 supplies power, so that the filtered alternating current strong current supplies power to the load in the shortest path, and the interference to the main control circuit is reduced. The capacitance filtering module 30 is arranged in the middle of the front face of the printed circuit board 1, and the direct current fan driving module 40 is arranged below the front face of the printed circuit board 1, so that the interference to an intelligent power module driving circuit is reduced, and the hard connection of a lead is avoided. Three wires are led out from the output end of the direct current fan driving module 40 to be combined with the plug wire terminals, and the power supply to the motor is realized by oppositely inserting the wires with the motor lead, so that the method of fixing by using bolts is avoided, and the production process is simplified.
In this embodiment, the power supply further includes a fuse 4, one end of the fuse 4 is connected to the input power supply 3, and the other end of the fuse 4 is connected to the power supply filtering module 10. The fuse 4 is arranged, when the voltage at two ends of the circuit is overlarge, the circuit can be opened through the fuse, and the damage of other elements caused by voltage short circuit is effectively avoided. In a specific embodiment, the fuse 4 may be a PCT thermistor, when the voltage across the capacitive filtering module 30 is short-circuited, the temperature of the PTC thermistor increases instantaneously, the internal resistance increases, and the current decreases, and when the temperature of the PTC thermistor increases to more than 120 ℃, the resistance value reaches megaohms, and at this time, the PTC thermistor is equivalent to an open circuit, thereby effectively avoiding the damage to other elements due to the voltage short-circuit.
The utility model discloses an automatically controlled board of air conditioner through with a plurality of circuit module electric connection and fixed the setting on printed circuit board 1, and through the connection between each circuit module, makes up into an automatically controlled board of air conditioner, saves the occupation space of the automatically controlled board of air conditioner, and convenient installation in the air conditioner.
Referring to fig. 1-5, the present invention further provides an air conditioner, which includes an indoor unit 100, and an electric control board of the air conditioner, wherein the electric control board of the air conditioner is disposed on the indoor unit 100.
In this embodiment, the air conditioner electric control board includes a printed circuit board 1 and a plurality of circuit modules, the printed circuit board 1 is electrically connected to each circuit module, and each circuit module is fixedly disposed on the printed circuit board 1.
In this embodiment, the air conditioner electric control board is an internal unit circuit board for integrating all circuit modules of an air conditioner internal unit; printed circuit boards (also called Printed circuit boards, commonly-used PCBs) are providers of electrical connections for electronic components, are important electronic components, support bodies for electronic components, and carriers for electrical connections for electronic components. The circuit modules are obtained by integrating required electronic components according to the module functions, each circuit module is electrically connected with the printed circuit board 1, and each circuit module is fixedly arranged on the printed circuit board 1 so as to realize the combination of an air conditioner electric control board and save the occupied space of the air conditioner electric control board.
In this embodiment, the circuit module includes a power filter module 10, a rectifier 20, a capacitor filter module 30, a dc fan driving module 40, and a main control module 50; the power supply filtering module 10 is used for electromagnetically filtering an external alternating current input power supply 3, one end of the power supply filtering module 10 is connected with the external input power supply 3, and the other end of the power supply filtering module 10 is respectively connected with the input end of the rectifier 20 and the main control module 50; the positive output end of the rectifier 20 is connected to the positive end of the capacitive filtering module 30, and the negative output end of the rectifier 20 is connected to the negative end of the capacitive filtering module 30 to form a main circuit loop, wherein the rectifier 20 is used for converting an alternating current power transmitted from the power filtering module 10 into a direct current power, and the capacitive filtering module 30 is used for converting a pulsating output direct current power of the rectifier 20 into a flat direct current power; the output end of the main circuit is respectively connected with the input end of the direct current fan driving module 40 and the main control module 50, the output end of the direct current fan driving module 40 is connected with an external motor, and a direct current power supply passing through the main control module 50 is converted into a driving power supply for supplying power to the chip 50 of the main control module and the intelligent power module of the direct current fan driving module 40.
In this embodiment, the circuit module specifically includes a power filter module 10, a rectifier 20, a capacitor filter module 30, a dc fan driving module 40, and a main control module 50. An external input power supply 3 is connected with a power supply filtering module 10, the input power supply 3 is a 220V alternating current power supply, an input terminal of the power supply filtering module 10 is a 250 terminal, and plug-ins are a zero line jack and a live line jack; the power supply filtering module 10 performs double filtering on the input 220V alternating current, where the double filtering is performed through a Common mode inductor (Common mode Choke), which is commonly used in a switching power supply to filter Common mode electromagnetic interference signals. In the board design, the common mode inductor also plays a role in EMI filtering, and is used for inhibiting electromagnetic waves generated by the high-speed signal line from radiating and emitting outwards. The common mode inductance is essentially a bi-directional filter: on one hand, common mode electromagnetic interference on a signal line is filtered, on the other hand, electromagnetic interference which is not emitted outwards is restrained, and normal work of other electronic equipment under the same electromagnetic environment is prevented from being influenced.
The double-filtered ac power supply is connected to the input terminal of the rectifier 20 for rectification by the rectifier 20, and is further connected to the main control module 50 for supplying power to the main control module 50. The positive output terminal of the rectifier 20 is connected to the positive terminal of the capacitive filtering module 30, and the negative output terminal of the rectifier 20 is connected to the negative terminal of the capacitive filtering module 30, so as to form a main circuit loop. The rectifier 20 converts the ac power input from the power filter module 10 into a dc power, and the capacitor filter module 30 converts the pulsating dc power rectified by the rectifier 20 into a flat dc power. In the present embodiment, the capacitor filter module 30 is composed of three electrolytic capacitors.
The output end of the main circuit is respectively connected with the input end of the direct current fan driving module 40 and the main control module 50, the output end of the direct current fan driving module 40 is connected with an external motor, and a direct current power supply passing through the main control module 50 is converted into a driving power supply for supplying power to a chip of the main control module 50 and an intelligent power module of the direct current fan driving module 40. In an embodiment, a specified driving power supply is preset according to a driving power supply required by a chip of the main control module 50 and a driving power supply required by an intelligent power module of the dc fan driving module 40, and when the dc power supply passing through the main control module 50 is converted according to the preset specified driving power supply, a driving power supply for supplying power to the electrical core of the main control module 50 and a driving power supply for supplying power to the intelligent power module are obtained. In one embodiment, the chips used by the main control module 50 need 12V dc power and 5V dc power to supply power, and the intelligent power module of the dc fan driving module 40 needs 15V dc power to supply power, for example, if the dc power at the output end of the main circuit is 310V, the switching power supply 51 of the main control module 50 converts 310VDC into 15VDC, 12VDC and 5VDC respectively, and connects the corresponding chips and the intelligent power module to supply power.
In this embodiment, the dc fan driving module 40 includes a first dc fan driving module 41 and a second dc fan driving module 42; the output end of the main circuit is respectively connected with the input end of the first direct current fan driving module 41 and the input end of the second direct current fan driving module 42; the output end of the first direct current fan driving module 41 is correspondingly connected with the first fan 5, the output end of the second direct current fan driving module 42 is correspondingly connected with the second fan 6, and the first fan 5 and the second fan 6 are external fans.
In the embodiment, the air conditioner electric control board includes a first dc fan driving module 41 and a second dc fan driving module 42 for driving the external dc fan, respectively, and the first dc fan driving module 41 drives the first dc motor 5 and the second dc fan driving module 42 drives the second dc motor 6. As in a specific embodiment, the output terminals of the main circuit are respectively connected to the input terminals of the first dc fan driving module 41 and the second dc fan driving module 42 and respectively provide 310VDC, the output terminal of the first dc fan driving module 41 is connected to the external first fan 5, the output terminal of the second dc fan driving module 42 is connected to the external second fan 6, and the main control module 50 provides 15VDC for the intelligent power module of the first dc fan driving module 41 and also provides 15VDC for the intelligent power module of the second dc fan driving module 42, so that the first fan 5 operates by supplying power to the first dc fan driving module 41 through 310VDC and 15VDC, and the second dc fan driving module 42 operates by supplying power to 310VDC and 15 VDC.
In this embodiment, the output end of the main circuit is connected to the switching power supply 51 circuit of the main control module 50, and the switching power supply 51 circuit converts the received dc power supply into a first dc power supply and a second dc power supply, where the first dc power supply and the second dc power supply are driving power supplies; the first dc power supply supplies power to the chip of the main control module 50, and the second dc power supply and the dc power supply at the input end of the dc fan driving module 40 supply power to the intelligent power module 401 of the dc fan driving module 40. For example, in a specific embodiment, the chips used by the main control module 50 respectively need 12V dc power and 5V dc power for power supply, and the 12V dc power and the 5V dc power are the first dc power supply; if the direct current at the output end of the main circuit is 310V, the switching power supply 51 of the main control module 50 converts 310VDC into 15VDC, 12VDC and 5VDC respectively, the obtained 12VDC and 5VDC are respectively corresponding to the chips used by the main control module 50 for supplying power, and the obtained 15VDC and the direct current power supply 310VDC at the input end of the direct current fan driving module 40 are used for supplying power to the intelligent power module 401 of the direct current fan driving module 40, so that the direct current fan connected to the direct current fan driving module 40 operates.
In the present embodiment, the capacitive filtering module 30 is disposed in the middle of the front surface of the printed circuit board 1; the main control module 50 is fixed on the front surface of the printed circuit board 1 and located on one side of the capacitive filtering module 30, and the dc fan driving module 40 is fixed on the front surface of the printed circuit board 1 and located on one side of the capacitive filtering module 30 away from the main control module 50. The capacitor filter module 30, the main control module 50, the direct current fan driving module 40, the power filter module 10 and the rectifier 20 are fixed on the printed circuit board 1, so that the volume of the indoor machine body 100 occupied by the air conditioner electric control board can be effectively reduced, and the circuit modules are electrically connected according to the stated circuit connection relation.
In the embodiment, the heat dissipation device further comprises a heat dissipation plate 2, and the heat dissipation plate 2 is fixedly arranged on the back surface of the printed circuit board 1. The radiating fins 2 are arranged for radiating heat, and radiating efficiency is improved.
In the present embodiment, the rectifier 20 comprises a plug-in single phase bridge rectifier; the rectifier bridge 201 of the plug-in single-phase bridge rectifier is arranged between the printed circuit board 1 and the radiating fin 2, and the rectifier bridge 201 is fixedly connected with the radiating fin 2.
In the present embodiment, the rectifier 20 is a single-phase rectifier, which is composed of a plug-in single-phase bridge rectifier to convert the ac power input by the power filter module 10 into dc power. The rectifier bridge 201 of the single-phase bridge rectifier of plug-in components is fixedly installed on the back of the printed circuit board 1, and one end, far away from the printed circuit board, of the rectifier bridge 201 is fixedly connected with the radiating fins 2, namely, the rectifier bridge 21 is arranged between the printed circuit board 1 and the radiating fins 2, so that the heat of the rectifier bridge 201 is radiated to the radiating fins 2, the radiating effect of the rectifier bridge 201 is enhanced, and further the radiating effect of the rectifier 20 is enhanced.
In this embodiment, still include first fixed column, be provided with the first through-hole 21 that can penetrate first fixed column on the fin 2, first through-hole 21 is located rectifier bridge 201 orthographic projection position on fin 2, and first fixed column penetrates first through-hole 21 and is fixed in rectifier bridge 201 on fin 2.
In this embodiment, first fixed column includes bolt, screw etc. is provided with the first through-hole 21 that the first fixed column of adaptation penetrates on fin 2, and first through-hole 21 sets up in rectifier bridge 201 orthographic projection position department on fin 2, and first fixed column is worn to advance and is fixed in rectifier bridge 201 on fin 2 in first through-hole 21, can effectually be fixed in rectifier bridge 201 and dispel the heat on fin 2. In a specific embodiment, a fixing through hole is formed in the rectifier bridge, and a bolt is sequentially inserted into the fixing through hole and the first through hole 21 and fixed in the first through hole 21, so as to fix the rectifier bridge 20 on the heat sink 2, thereby achieving heat dissipation.
In this embodiment, the dc fan driving module 40 includes an intelligent power module 401 and an intelligent power module driving circuit, where the intelligent power module 401 driving circuit is used to drive an external motor; the intelligent power module 401 is fixedly mounted on the back of the printed circuit board 1 and arranged to avoid the rectifier 20, and the intelligent power module 401 is fixedly connected with the heat sink 2.
An intelligent Power module, also called ipm (intelligent Power module), is an advanced Power switching device, and has the advantages of GTR (large Power transistor) high current density, low saturation voltage and high voltage resistance, and the advantages of MOSFET high input impedance, high switching frequency and low driving Power. The built-in drive and protection circuit of the IPM ensures that a system hardware circuit is simple and reliable, shortens the system development time and also improves the self-protection capability under the fault. The intelligent power module comprises an Insulated Gate Bipolar Transistor (IGBT), which is a composite fully-controlled voltage-driven power semiconductor device consisting of a Bipolar Junction Transistor (BJT) and a Metal Oxide Semiconductor (MOS), and has the advantages of both high input impedance of the MOSFET and low conduction voltage drop of the GTR. The GTR saturation voltage is reduced, the current carrying density is high, but the driving current is large; the MOSFET has small driving power, high switching speed, large conduction voltage drop and small current carrying density. The IGBT integrates the advantages of the two devices, and has small driving power and reduced saturation voltage. The method is very suitable for being applied to the fields of current transformation systems with direct-current voltage of 600V or more, such as alternating-current motors, frequency converters, switching power supplies, lighting circuits, traction transmission and the like. In this embodiment, the dc fan driving module 40 includes an intelligent power module 401, and the intelligent power module 401 includes an igbt, and more specifically, the dc power is converted into a driving power for supplying power to the igbt through the switching power supply 51 circuit of the main control module 50, and the driving power and the dc power at the input end of the dc fan driving module 40 supply power to the igbt in the intelligent power module 401.
In this embodiment, the heat sink further includes a second fixing column, the heat sink 2 is provided with a second through hole 22 through which the second fixing column can be inserted, the second through hole 22 is located at a position where the smart power module 401 is orthographically projected on the heat sink 2, and the second fixing column penetrates the second through hole 22 to fix the smart power module 401 on the heat sink 2.
In this embodiment, the second fixing column may be the same as the first fixing column, and also includes a bolt, a screw, and the like, a second through hole 22 that the second fixing column can be adapted to penetrate is provided on the heat sink 2, the second through hole 22 is provided at a position where the smart power module 401 is orthographically projected on the heat sink 2, the second fixing column penetrates into the second through hole 22 to fix the smart power module 401 on the heat sink 2, and the smart power module 401 can be effectively fixed on the heat sink 2 to dissipate heat. In a specific embodiment, the intelligent power module 401 is provided with a mounting through hole, and a 3MM bolt is sequentially inserted into the mounting through hole and the second through hole 22 and fixed in the second through hole 22, so that the intelligent power module 401 is fixed on a heat sink, and the heat dissipation efficiency is improved; the first dc fan driving module 41 is provided with an intelligent power module corresponding thereto, and the second dc fan driving module 42 is also provided with an intelligent power module corresponding thereto.
In this embodiment, the main control module 50 is disposed above the front surface of the printed circuit board 1, and is used to provide external communication, temperature acquisition, interfaces for controlling various valves, and an LED display circuit. The LED display circuit is external, and display is realized by leading out a control signal to the external display circuit. The valve body control part of the main control circuit of the main control module 50 is located at the right upper part of the front surface of the printed circuit board 1, and the output alternating current of the power supply filtering module 10 supplies power, so that the filtered alternating current strong current supplies power to the load in the shortest path, and the interference to the main control circuit is reduced. The capacitance filtering module 30 is arranged in the middle of the front face of the printed circuit board 1, and the direct current fan driving module 40 is arranged below the front face of the printed circuit board 1, so that the interference to an intelligent power module driving circuit is reduced, and the hard connection of a lead is avoided. Three wires are led out from the output end of the direct current fan driving module 40 to be combined with the plug wire terminals, and the power supply to the motor is realized by oppositely inserting the wires with the motor lead, so that the method of fixing by using bolts is avoided, and the production process is simplified.
In this embodiment, the power supply further includes a fuse 4, one end of the fuse 4 is connected to the input power supply 3, and the other end of the fuse 4 is connected to the power supply filtering module 10. The fuse 4 is arranged, when the voltage at two ends of the circuit is overlarge, the circuit can be opened through the fuse, and the damage of other elements caused by voltage short circuit is effectively avoided. In a specific embodiment, the fuse 4 may be a PCT thermistor, when the voltage across the capacitive filtering module 30 is short-circuited, the temperature of the PTC thermistor increases instantaneously, the internal resistance increases, and the current decreases, and when the temperature of the PTC thermistor increases to more than 120 ℃, the resistance value reaches megaohms, and at this time, the PTC thermistor is equivalent to an open circuit, thereby effectively avoiding the damage to other elements due to the voltage short-circuit.
The utility model discloses an automatically controlled board of air conditioner and air conditioner through with a plurality of circuit module electric connection and fixed the setting on printed circuit board 1, and through the connection between each circuit module, makes up into the automatically controlled board of an air conditioner, saves the occupation space of the automatically controlled board of air conditioner, and convenient installation in the air conditioner.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. The air conditioner electric control board is characterized by comprising a printed circuit board and a plurality of circuit modules, wherein the printed circuit board is electrically connected with the circuit modules, and the circuit modules are fixedly arranged on the printed circuit board.
2. The air conditioner electric control board according to claim 1, wherein the circuit module comprises a power supply filtering module, a rectifier, a capacitance filtering module, a direct current fan driving module and a main control module;
the power supply filtering module is used for electromagnetically filtering an external alternating current input power supply, one end of the power supply filtering module is connected with the input power supply, and the other end of the power supply filtering module is respectively connected with the input end of the rectifier and the main control module;
the output positive end of the rectifier is connected with the positive end of the capacitance filtering module, the output negative end of the rectifier is connected with the negative end of the capacitance filtering module to form a main circuit loop, wherein the rectifier is used for converting an alternating current power supply transmitted from the power supply filtering module into a direct current power supply, and the capacitance filtering module is used for converting a pulsating output direct current power supply of the rectifier into a flat direct current power supply;
the output end of the main circuit is respectively connected with the input end of the direct current fan driving module and the main control module, the output end of the direct current fan driving module is connected with an external motor, and a direct current power supply passing through the main control module is converted into a driving power supply for supplying power to a chip of the main control module and an intelligent power module of the direct current fan driving module.
3. The electric control board of an air conditioner according to claim 2, wherein the direct current fan driving module comprises a first direct current fan driving module and a second direct current fan driving module;
the output end of the main circuit is respectively connected with the input end of the first direct current fan driving module and the input end of the second direct current fan driving module;
the output end of the first direct current fan driving module is correspondingly connected with a first fan, the output end of the second direct current fan driving module is correspondingly connected with a second fan, and the first fan and the second fan are external motors.
4. The air conditioner electric control board according to claim 2 or 3, wherein the output end of the main circuit is connected to a switching power supply circuit of the main control module, and the switching power supply circuit converts a received direct current power supply into a first direct current power supply and a second direct current power supply, wherein the first direct current power supply and the second direct current power supply are the driving power supply;
the first direct current power supply supplies power to the chip of the main control module, and the second direct current power supply and the direct current power supply at the input end of the direct current fan driving module supply power to the intelligent power module of the direct current fan driving module.
5. The electric control board of claim 2, wherein the capacitive filtering module is disposed in the middle of the front surface of the printed circuit board;
the main control module is fixed on the front face of the printed circuit board and located on one side of the capacitance filtering module, and the direct current fan driving module is fixed on the front face of the printed circuit board and located on one side, far away from the main control module, of the capacitance filtering module.
6. An electric control board for an air conditioner according to claim 5, further comprising a heat sink fixedly disposed on the back surface of the printed circuit board.
7. An air conditioning electric control board according to claim 6, characterized in that the rectifier comprises a plug-in single phase bridge rectifier;
the rectifier bridge of the plug-in single-phase bridge rectifier is arranged between the printed circuit board and the radiating fin and fixedly connected with the radiating fin.
8. An air conditioner electric control board according to claim 7, further comprising a first fixing column, wherein a first through hole capable of penetrating into the first fixing column is arranged on the heat sink, the first through hole is located at a position where the rectifier bridge is orthographically projected on the heat sink, and the first fixing column penetrates into the first through hole to fix the rectifier bridge on the heat sink.
9. The air conditioner electric control board according to any one of claims 6 to 8, wherein the direct current fan driving module comprises the intelligent power module and an intelligent power module driving circuit, and the intelligent power module driving circuit is used for driving the external motor;
the intelligent power module is fixedly installed on the back face of the printed circuit board and avoids the arrangement of the rectifier, and the intelligent power module is fixedly connected with the radiating fin.
10. An air conditioner, comprising a body installed indoors, and further comprising an electric control board for an air conditioner according to any one of claims 1 to 9, the electric control board for an air conditioner being disposed on the body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020641186.XU CN212339572U (en) | 2020-04-24 | 2020-04-24 | Air conditioner electric control board and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020641186.XU CN212339572U (en) | 2020-04-24 | 2020-04-24 | Air conditioner electric control board and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212339572U true CN212339572U (en) | 2021-01-12 |
Family
ID=74074151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020641186.XU Active CN212339572U (en) | 2020-04-24 | 2020-04-24 | Air conditioner electric control board and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212339572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097958A1 (en) * | 2021-12-01 | 2023-06-08 | 佛山市顺德区美的电子科技有限公司 | Electric control board, outdoor unit of air conditioner, and air conditioner |
-
2020
- 2020-04-24 CN CN202020641186.XU patent/CN212339572U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097958A1 (en) * | 2021-12-01 | 2023-06-08 | 佛山市顺德区美的电子科技有限公司 | Electric control board, outdoor unit of air conditioner, and air conditioner |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212339572U (en) | Air conditioner electric control board and air conditioner | |
| CN212566202U (en) | Control device of air conditioner and air conditioner | |
| CN111490638A (en) | Electric control assembly and electrical equipment | |
| CN110085579B (en) | High-integration intelligent power module, manufacturing method thereof and air conditioner | |
| CN211650663U (en) | Electric control assembly and air conditioner | |
| CN212163182U (en) | Integrated power module, control device of air conditioner and air conditioner | |
| CN102398553B (en) | Electronic system having resistors serially connected | |
| CN110266179B (en) | Layout method of SiC MOSFET converter and SiC MOSFET converter | |
| CN208238065U (en) | Outdoor unit and air conditioner | |
| CN209516953U (en) | A kind of brushless motor controller system | |
| CN110486851B (en) | Automatically controlled subassembly, off-premises station and air conditioner | |
| CN209267447U (en) | Electrically-controlled component and air conditioner | |
| CN113453427A (en) | Frequency conversion controller | |
| CN209470298U (en) | The electric-controlled plate of air-conditioner outdoor unit | |
| CN208238066U (en) | Electrically-controlled component, outdoor unit and air conditioner | |
| CN213402842U (en) | Control device of air conditioner and air conditioner | |
| CN220254904U (en) | Electric control device and refrigeration equipment | |
| CN110752758A (en) | High-integration intelligent power module and air conditioner | |
| CN219919280U (en) | Controller and air conditioner | |
| CN213693503U (en) | Control device of air conditioner and air conditioner | |
| CN110753486B (en) | High-integration intelligent power module and air conditioner | |
| CN204993956U (en) | LED drive power supply with heat radiation structure | |
| CN212585158U (en) | Control device of air conditioner and air conditioner | |
| CN214205972U (en) | High-integration intelligent power module and air conditioner | |
| CN218243363U (en) | Control panel and air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 1 by villagers' group of helongsha, Shengli village, Lishui Town, Nanhai District, Foshan City, Guangdong Province Patentee after: Guangdong Kaili HVAC Co.,Ltd. Address before: No. 1 by villagers' group of helongsha, Shengli village, Lishui Town, Nanhai District, Foshan City, Guangdong Province Patentee before: GUANGDONG CHIGO HEATING AND VENTILATION EQUIPMENT Co.,Ltd. |