CN110486852B - Automatically controlled subassembly, off-premises station and air conditioner - Google Patents
Automatically controlled subassembly, off-premises station and air conditioner Download PDFInfo
- Publication number
- CN110486852B CN110486852B CN201810467327.8A CN201810467327A CN110486852B CN 110486852 B CN110486852 B CN 110486852B CN 201810467327 A CN201810467327 A CN 201810467327A CN 110486852 B CN110486852 B CN 110486852B
- Authority
- CN
- China
- Prior art keywords
- compressor
- pfc
- circuit board
- control assembly
- ipm module
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/20—Electric components for separate outdoor units
- F24F1/24—Cooling of electric components
Abstract
The invention discloses an electric control assembly, an outdoor unit and an air conditioner, wherein the electric control assembly comprises a main controller, a rectifier bridge, a PFC circuit, a direct current bus capacitor and a compressor IPM module, the rectifier bridge, the PFC circuit and the compressor IPM module are sequentially connected, the direct current bus capacitor is connected in parallel with the output end of the PFC circuit, and the main controller is respectively connected with the PFC circuit and the compressor IPM module; the PFC circuit comprises a PFC power switch and a PFC inductor; the electronic control assembly further comprises: the box body is detachably connected with the liquid storage tank so as to dissipate heat through contact of the liquid storage tank; the first circuit board, the rectifier bridge, the compressor IPM module and the PFC power switch are arranged on the first circuit board, and the first circuit board is arranged in the box body; the second circuit board, the main controller, the PFC inductor and the direct current bus capacitor are arranged on the second circuit board. The invention utilizes the low-temperature working environment of the liquid storage tank to improve the heat dissipation rate of the electric control assembly.
Description
Technical Field
The invention relates to the technical field of electric appliances, in particular to an electric control assembly, an outdoor unit and an air conditioner.
Background
In an electrical apparatus such as an air conditioner and a refrigerator, which is equipped with a frequency converter, a PFC circuit, an IPM circuit, and the like are generally provided, and these circuit elements generate heat during operation, and if the heat is not dissipated in time, the working performance of the electrical apparatus may be affected. Therefore, the temperature of the heating elements such as PFC and IPM must be reduced to ensure the reliability and the service life thereof.
At present, most of the methods for performing the above heating elements adopt a method of externally connecting a metal radiator, for example, in an air conditioner, heat radiation may be performed by an outdoor unit fan, which needs to increase the power of the fan and increase the volume of the radiator, resulting in an increase in heat radiation cost, but the heat radiation efficiency is still low, and the temperature of the heating elements such as PFC, IPM, and the like is still over 100 ℃.
Disclosure of Invention
The invention mainly aims to provide an electric control assembly, an outdoor unit and an air conditioner, and aims to solve the problem of improving the heat dissipation rate of the electric control assembly by utilizing the low-temperature working environment of a liquid storage tank.
In order to achieve the above object, the present invention provides an electronic control assembly, which includes a main controller, a rectifier bridge, a PFC circuit, a dc bus capacitor, and a compressor IPM module, where the rectifier bridge, the PFC circuit, and the compressor IPM module are sequentially connected, the dc bus capacitor is connected in parallel to an output end of the PFC circuit, and the main controller is connected to the PFC circuit and the compressor IPM module respectively; the PFC circuit comprises a PFC power switch and a PFC inductor; the electronic control assembly further comprises:
the box body is detachably connected with the liquid storage tank so as to dissipate heat through contact of the liquid storage tank;
the rectifier bridge, the compressor IPM module and the PFC power switch are arranged on the first circuit board, and the first circuit board is arranged in the box body;
and the main controller, the PFC inductor and the direct current bus capacitor are arranged on the second circuit board.
Optionally, a power input interface, a switching power supply and an EMC filter circuit are further disposed on the second circuit board, an input end of the EMC filter circuit is connected to the power input interface, and an output end of the EMC filter circuit is connected to the rectifier bridge;
the input end of the switching power supply is connected with the rectifier bridge, and the output end of the switching power supply is electrically connected with the power end of the main controller.
Optionally, the number of the dc bus capacitors is multiple.
Optionally, the electronic control assembly further includes a dc fan compressor IPM module, the dc fan compressor IPM module is disposed on the first circuit board or the second circuit board, and the dc fan compressor IPM module is electrically connected to the main controller.
Optionally, the PFC power switch is integrated in the compressor IPM module, or the PFC power switch is provided separately from the compressor IPM module.
Optionally, the automatically controlled subassembly still includes the heat dissipation panel beating, one side fixed mounting of heat dissipation panel beating is in a side of liquid storage pot, the opposite side of heat dissipation panel beating with the connection can be dismantled to the box body.
Optionally, the electronic control assembly further includes a mounting bracket, the mounting bracket has a first side and a second side opposite to each other, the first side of the mounting bracket is attached to the first circuit board, the compressor IPM module is mounted on the second side of the mounting bracket, and pins of the compressor IPM module pass through the mounting bracket and are fixedly connected to the first circuit board;
the box body is provided with an installation window, and the compressor IPM is attached to the heat dissipation metal plate through the installation window.
Optionally, the rectifier bridge is installed on the second side of the mounting bracket, pins of the rectifier bridge penetrate through the mounting bracket and the first circuit board to be connected and fixed, and the rectifier bridge is attached to the heat dissipation metal plate through the mounting window.
The invention also provides an outdoor unit, which comprises a compressor and the electric control assembly, wherein the compressor is provided with a liquid storage tank, the electric control assembly is fixedly arranged on the outer wall of the liquid storage tank, and a main controller of the electric control assembly is communicated with the indoor unit.
Optionally, the compressor further comprises a compressor main body, the liquid storage tank is arranged on one side of the compressor main body, and the box body is installed between the compressor main body and the liquid storage tank.
The invention also provides an air conditioner, which comprises a compressor and the electric control assembly, wherein the compressor is provided with a liquid storage tank, and the electric control assembly is fixedly arranged on the outer wall of the liquid storage tank; or the outdoor unit comprises the indoor unit and the outdoor unit, and the main controller of the outdoor unit is in communication connection with the main control chip of the indoor unit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic circuit diagram of an electrical control assembly according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of an electrical control assembly according to the present invention;
FIG. 3 is a schematic structural diagram of a first circuit board of the electronic control assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a second circuit board of the electronic control assembly according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an outdoor unit according to an embodiment of the present invention.
Drawings
| Reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
400 | |
| 20 | |
500 | |
| 30 | |
600 | |
| 40 | |
700 | |
| 50 | |
100 | |
| 60 | IPM module of direct |
110 | |
| 70 | |
200 | |
| 80 | |
300 | Heat radiator |
| Vin | Power input interface | CN1 | Communication interface |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating 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, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides an electric control assembly which can be used in equipment such as an air conditioner, a refrigerator and the like, and the electric control assembly is described by taking the electric control assembly applied to the air conditioner as an example for convenience in understanding.
Referring to fig. 1 to 5, in an embodiment of the present invention, the electronic control assembly includes a main controller 10, a rectifier bridge 20, a PFC circuit 30, a dc bus capacitor 40 and a compressor IPM module 50, where the rectifier bridge 20, the PFC circuit 30 and the compressor IPM module 50 are sequentially connected, the dc bus capacitor 40 is connected in parallel to an output end of the PFC circuit 30, and the main controller 10 is connected to the PFC circuit 30 and the compressor IPM module 50 respectively; the electronic control assembly further comprises:
the box body 100 is detachably connected with the liquid storage tank 200 so as to dissipate heat through the contact of the liquid storage tank 200;
the first circuit board 110, the rectifier bridge 20, the compressor IPM module 50 and the PFC power switch 31 are disposed on the first circuit board 110, and the first circuit board 110 is disposed in the case 100;
the second circuit board 120, the main controller 10, the PFC inductor 32 and the dc bus capacitor 40 are disposed on the second circuit board 120.
In this embodiment, the case 100 is used to accommodate the first circuit board 110, and the case 100 may be made of plastic material, or may be made of metal material such as aluminum or aluminum alloy material, and this embodiment may be implemented by metal material. The box body 100 is arranged on the liquid storage tank 200 through one or more of the combination of a screw, a bolt, a rivet joint, a welding, a clamping joint and a plug-in mode, and is attached to one side face of the liquid storage tank 200, and the refrigerant in the liquid storage tank 200 absorbs heat in a vaporization mode, so that the working temperature of the refrigerant is generally maintained between 20 ℃ below zero and 30 ℃, and the arrangement is favorable for the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31, the PFC inductor 32 and other components and circuit modules on the first circuit board 110 to work, the generated heat is conducted to the liquid storage tank 200 through the box body 100 and is absorbed by the refrigerant in the liquid storage tank 200 in a vaporization mode, and therefore the low-temperature working environment of the liquid storage tank 200 is utilized, and the heat dissipation rate is improved. Because the temperature of the heating elements such as the IPM module 50 of the compressor can be reduced very low, the module (chip) can generate higher heat power under the same condition, that is, the current chip can be used to drive higher power load without overheating and damage, in other words, a smaller module can drive a larger number of air conditioners.
In this embodiment, the second circuit board 120 further has a power input interface Vin for receiving ac power, a power output interface Vout for outputting ac power to the first circuit board, and a communication interface CN1 for communicating with an external device, such as an indoor unit of an air conditioner. The first circuit board 110 is also provided with a controller 111 for performing data processing. The main controller 10 integrates a timing controller, a memory, a data processor, and a software program and/or module stored in the memory and executable on the data processor, the main controller 10 executes or executes the software program and/or module stored in the memory, calls the data stored in the memory, and communicates with the control unit on the second circuit board 120 of the indoor unit through the communication interface CN1 to output the control signal output by the control unit to the controller on the first circuit board 110, and the controller converts the control signal into a corresponding logic level signal and outputs the logic level signal to the PFC power switch 31 and the compressor IPM module 50 to drive the PFC power switch 31 and the compressor IPM module 50 to operate.
In this embodiment, the number of the dc bus capacitors 40 may be one or multiple, and may be specifically set according to the number of power devices, for example, in an air conditioner with 1 or 2, the number of the dc bus capacitors 40 is generally set to one, and in an air conditioner with 3 or more, the number of the dc bus capacitors 40 is generally set to two or more. Of course, in other embodiments, the number of the dc bus capacitors 40 may be set according to the energy storage requirement of the power device, and is not limited herein.
In this embodiment, the PFC power switch 31 further forms a PFC circuit 30 with other components such as a diode and a PFC inductor 32 to implement power factor correction of the dc power supply. The PFC circuit 30 may be implemented using a passive PFC circuit 30 to constitute a boost PFC circuit 30, or a buck PFC circuit 30, or a boost PFC circuit 30. It is understood that, in practical applications, the positions and the connection relationship between the PFC power switch 31 and the rectifier bridge 2020 may be adaptively adjusted according to the setting type of the PFC circuit 30, and the boost PFC circuit 30 is used in this embodiment for illustration, but is not limited to the boost PFC circuit 30. The PFC power switch 31 is controlled by the main controller 10, and adjusts the power factor of the dc power input by the rectifier bridge 20, for example, the dc voltage output by the rectifier bridge 20 is raised and stabilized at 380V, so that the input current follows the input voltage, and the power factor of the dc power supply is ensured to be above 0.9. The adjusted dc power is transmitted to the dc bus capacitor 40, filtered by the dc bus capacitor 40 and then output to the compressor IPM module 50, so as to be the compressor IPM module 50. The regulated dc power can also be used to generate various driving voltages, such as 5V and 15V, through the switching power supply 70 circuit to supply power to the second circuit board 120, such as the main controller 10 and the components on the first circuit board 110.
It can be understood that the second circuit board 120 is further provided with a real-time detection circuit capable of detecting parameters such as current, temperature, and voltage of each element in the rectifier bridge 20, the PFC power switch 31, and the compressor IPM module 50, and when a fault such as a severe overload, a direct short circuit, or an overheat temperature, an overvoltage driving voltage, etc. occurs, the real-time detection circuit can control the power device in the IPM to be turned off softly, and send a fault signal to the control circuit unit at the same time, so that the control circuit unit controls other circuit modules to operate, thereby preventing other circuit modules from being damaged due to the fault.
In this embodiment, the IPM module 50 of the compressor integrates a plurality of power switching transistors, and the plurality of power switching transistors form a driving inverter circuit, for example, six power switching transistors form a three-phase inverter bridge circuit, or four power switching transistors form a two-phase inverter bridge circuit. Each power switch tube can be realized by adopting an MOS tube or an IGBT. The compressor IPM module 50 is used to drive the compressor motor. In other embodiments, the compressor IPM module 50 may also be used for driving frequency converters of other motors and various inverter power supplies, and may be applied to the fields of variable frequency speed regulation, metallurgical machinery, electric traction, servo drive, and variable frequency household appliances such as air conditioners. It is understood that, in order to improve the integration of the compressor IPM module 50 and reduce the size of the circuit board, the PFC power switch 31 may be integrated into the compressor IPM module 50 in this embodiment, but in other embodiments, the PFC power switch 31 and the compressor IPM module 50 may be separately disposed, which is not limited herein.
It should be noted that, the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and the PFC inductor 32, especially, the compressor IPM module 50 generally generates heat seriously during operation, and heat generated by the power device is conducted to the main controller 10 through the electronic control board, so that the temperature of the main controller 10 is almost the same as the temperature of the main controller 10. And the ideal operating temperature of the main controller 10 is mostly lower than that of the power device, so the operating temperature of the power device may cause the operating temperature of the main controller 10 to be too high, and malfunction occurs, so that the main controller 10 is liable to output an erroneous control signal, in order to avoid the above-mentioned problem, the main controller 10 is provided on the second circuit board 120 in the present embodiment, the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and the PFC inductor 32 are disposed on the first circuit board 110, between the main controller 10 and the compressor IPM module 50, and the main controller 10 and the PFC power switch 31 may be electrically connected by a wire, the first circuit board 110 is disposed in the box body 100, and heat is dissipated through the liquid storage tank 200, thereby maintaining the operating temperature of the components and circuit modules on the first circuit board 110 at-20 to 120 ℃. By the arrangement, heat generated by the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and the PFC inductor 32 can be quickly dissipated through the liquid storage tank 200 without dissipating heat devices such as a hot fan, heat dissipation efficiency can be improved, and meanwhile, the driving delay of the PFC power switch 31 and the compressor IPM module 50 is shortened, so that the switching speed of each power switch tube can be increased, the switching loss and the electromagnetic interference of the compressor IPM module 50 can be reduced, and the compressor IPM module 50 can be reliably operated for a long time.
It should be noted that, in some embodiments, since the dc bus capacitor 40 is generally implemented by using a large-sized electrolytic capacitor, and the number of the electrolytic capacitors may be multiple, the heat generated by the electrolytic capacitor is relatively small compared to the heat generated by the compressor IPM module 50 or the PFC circuit 30. In addition, the volume of the PFC inductor 32 is also large, the dc bus capacitor 40 and the PFC inductor 32 are both disposed on the first circuit board 110 and assembled into the box 100, when the box 100 is mounted on the tank 200, the gravity center of the tank 200 may be affected, and large-volume components are disposed on the first circuit board 110, and the box 100 needs to have a large cavity to accommodate the components, which is not favorable for the circuit layout and installation of the electronic control assembly. In order to solve the above problems, in the present embodiment, the dc bus capacitor 40 and the PFC inductor 32 are disposed on the second circuit board 120, and the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and other main heat sources are disposed on the first circuit board 110, so that the generated heat can be rapidly dissipated through the liquid storage tank 200, thereby improving the heat dissipation efficiency, and simultaneously being beneficial to reducing the volume of the first circuit board 110, facilitating installation in the box 100 of the electronic control assembly, and simplifying the PCB layout of the electronic control board.
In the invention, the rectifier bridge 20, the compressor IPM module 50 and the PFC power switch 31 are arranged on the first circuit board 110 based on the heat dissipation electric control component of the compressor liquid storage tank 200, and the main controller 10, the direct current bus capacitor 40 and the PFC inductor 32 are arranged on the second circuit board 120; the main controller 10 and the compressor IPM module 50, and the main controller 10 and the PFC power switch 31 can be electrically connected by a wire, the first circuit board 110 is disposed in the box body 100, and the box body 100 is detachably connected to the liquid storage tank 200, and the heat is dissipated by the contact of the liquid storage tank 200, which is beneficial to the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and other components and circuit modules on the first circuit board 110 during operation, the generated heat is conducted to the liquid storage tank 200 through the box body 100 and absorbed by the refrigerant in the liquid storage tank 200 during vaporization, thereby utilizing the low-temperature working environment of the liquid storage tank 200 and improving the heat dissipation rate. The electric control assembly is realized by adopting the second circuit board 120 and the first circuit board 110, and the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and other heat source devices and the main controller 10 and other non-heat sources are separately arranged, so that the heat of the heat source devices can be prevented from being dissipated to the non-heat source devices, and the work of the non-heat source devices can be prevented from being influenced. And can solve when adopting a monoblock circuit board to realize, components and parts are intensive, the difficult problem of circuit wiring and electrical apparatus isolation, adopt two circuit boards and can also reduce the volume of monoblock circuit board, for example first circuit board 110, conveniently install in the box body 100 of automatically controlled subassembly to simplify the PCB board overall arrangement of automatically controlled board.
Referring to fig. 1 to 5, in an alternative embodiment, the electronic control assembly further includes a dc fan IPM module 60, the dc fan IPM module 60 is disposed on the first circuit board 110, and the dc fan IPM module 60 is electrically connected to the main controller 10.
It should be noted that the outdoor fan of the air conditioner can be divided into an ac fan and a dc fan, the ac fan generally operates without driving, and the dc fan needs to be controlled to operate by power driving. In this embodiment, the outdoor fan may be implemented by a direct current fan, and the direct current fan IPM module 60 is adapted to drive the direct current fan, the direct current fan IPM module 60 and the compressor IPM module 50 are respectively integrated with a plurality of power switch tubes such as IGBTs and MOS tubes, the number of the plurality of power switch tubes may be four or six, the specific number may be set according to the type of the motor, the driving power, and the like, and the present disclosure is not limited herein. Of course, in other embodiments, the dc fan IPM module 60 may also be disposed on the second circuit board 120, and the embodiment is described by taking the dc fan IPM module 60 disposed on the second circuit board 120 as an example.
Referring to fig. 1 to 5, in an alternative embodiment, the box body 100 has a first receiving cavity 130 and a second receiving cavity 140, the compressor IPM module 50 is received in the first receiving cavity 130, and the rectifier bridge 20 and the PFC power switch 31 are received in the second receiving cavity 140.
In this embodiment, at least a portion of the outer wall of the second accommodating cavity 140 is attached to the outer wall of the liquid storage tank 200, so that the rectifier bridge 20, the PFC power switch 31, the PFC inductor 32, and the like on the first circuit board 110 generate heat seriously, and the components with large volume are assembled into the second accommodating cavity 140, so that when the components and circuit modules such as the rectifier bridge 20, the PFC power switch 31, and the like operate, the generated heat is conducted to the liquid storage tank 200 through the second accommodating cavity 140 and absorbed by the refrigerant in the liquid storage tank 200 when vaporized, thereby utilizing the low-temperature working environment of the liquid storage tank 200 to improve the heat dissipation rate.
Referring to fig. 1 to 5, in an optional embodiment, the electronic control assembly further includes a heat dissipation sheet metal 300, one side of the heat dissipation sheet metal 300 is fixedly mounted on a side surface of the liquid storage tank 200, and the other side of the heat dissipation sheet metal 300 is detachably connected to the box 100.
In this embodiment, one side of heat dissipation panel beating 300 can be through one or more combination mounting in screw, bolt, riveting, welding, joint and the grafting mode on the liquid storage pot 200, the opposite side of heat dissipation panel beating 300 can be equally can be through screw, bolt, riveting, welding, one or more combination and box body 100 can be dismantled fixedly in joint and the grafting mode, the material of heat dissipation panel beating 300 can be aluminium and aluminium alloy, copper and copper alloy, or the panel beating that other metal material made, so, fix box body 100 on liquid storage pot 200, thereby reduce liquid storage pot 200 and take place relative motion and produce the vibration, and transmit to in the box body 100, influence the normal work of circuit module on the first circuit board 110. Meanwhile, when the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and other components and circuit modules on the first circuit board 110 work, the heat generated is conducted to the heat dissipation metal plate 300 through the box body 100, the speed of transferring the heat to the liquid storage tank 200 is increased through the heat dissipation metal plate 300, and the heat dissipation rate is increased.
Referring to fig. 1 to 5, in an alternative embodiment, the electronic control assembly further includes a mounting bracket 400, the mounting bracket 400 has a first side and a second side opposite to each other, the first side of the mounting bracket 400 is attached to the first circuit board 110, the compressor IPM module 50 is mounted on the second side of the mounting bracket 400, and the pins of the compressor IPM module 50 are all fixed to the first circuit board 110 through the mounting bracket 400;
the box 100 has an installation window, and the compressor IPM module 50 is attached to the heat dissipation metal plate 300 through the installation window.
Further, in the above embodiment, the rectifier bridge 20 is installed at the second side of the mounting bracket 400, the pins of the rectifier bridge 20 penetrate through the mounting bracket 400 to be connected and fixed with the first circuit board 110, and the rectifier bridge 20 is attached to the heat dissipation metal plate 300 through the mounting window.
In this embodiment, most of the pins of the compressor IPM module 50 are in the form of the in-line package or the gull wing package, and the contact area between the pins and the first circuit board 110 is generally small, especially in the form of the in-line package, so the load-bearing capacity of the compressor IPM module 50 is small. In order to prevent the compressor IPM module 50 from being deformed by compression or damaged when the first circuit board 110 is mounted on the heat dissipation sheet metal 300, the present embodiment further provides a mounting bracket 400, and the compressor IPM module 50 and the rectifier bridge 20 are mounted on the mounting bracket 400, and the pins pass through the mounting bracket 400 and are fixedly connected to the first circuit board 110. With such an arrangement, the compressor IPM module 50 and the rectifier bridge 20 can be arranged opposite to the heat dissipation metal plate 300, so that heat generated by the compressor IPM module 50 and the rectifier bridge 20 can be quickly conducted through the heat dissipation metal plate 300, and the heat dissipation rate of the compressor IPM module 50 and the rectifier bridge 20 is improved. After the box 100 is fixedly mounted on the liquid storage tank 200, in order to reduce the vibration generated by the relative motion between the first circuit board 110 and the liquid storage tank 200 and transmit the vibration to the first circuit board 110, when the box 100 is fixed on the liquid storage tank 200, the first circuit board 110 may be fixed on the heat dissipation metal plate 300 by screws or bolts, and of course, the first circuit board 110 may also be connected and fixed with the box 100 and the heat dissipation metal plate 300 by other methods, which is not limited herein.
Referring to fig. 1 to 5, in an alternative embodiment, the electronic control assembly further includes a sealing ring 500, and the sealing ring 500 is disposed between the cartridge body 100 and the mounting bracket 400.
It should be noted that the working temperature of the liquid storage tank 200 is generally maintained at a temperature of-20 to 30 ℃, so that moisture in the air may be condensed into condensed water in the liquid storage tank 200, and the condensed water may enter the box 100 of the electronic control component along the heat dissipation sheet metal 300 on the outer wall of the liquid storage tank 200, so that the rectifier bridge 20, the compressor IPM module 50, the PFC power switch 31 and the PFC inductor 32 are affected by moisture and short circuit, thereby affecting the normal operation of the electronic control component. In order to solve the above problem, in this embodiment, a sealing ring 500, i.e. a sealing gasket, is further disposed between the mounting bracket 400 and the box 100 to isolate the box 100 from the heat dissipation metal plate 300, so as to seal the components in the box 100.
Referring to fig. 1 to 5, in an alternative embodiment, the electronic control assembly further includes a cover 600 fastened to the opening of the box body 100, and the cover 600 is tightly fitted to the box body 100 to form a sealing structure.
In this embodiment, the size and shape of the box cover 600 are adapted to the size and shape of the first circuit board 110, and may be square, but not limited to square. The box cover 600 and the box body 100 are tightly matched to form a sealing structure, so that the arrangement is favorable for preventing dangers such as external cold air, dust, rainwater, mosquitoes and the like from falling onto the first circuit board 110, and the safe operation of the electric control assembly is guaranteed. In addition, the sealing structure can also transmit and absorb electromagnetic radiation generated by an external electric field, so that the electromagnetic radiation entering the electronic components in the box body 100 is weakened, and the box body 100 has a better electromagnetic shielding function. The sealing structure may also reflect and absorb electromagnetic interference generated by the electronic components inside the box 100, so as to shield electromagnetic signals generated by the electric field of the electronic components inside the box 100, and prevent electromagnetic radiation of the electronic components inside the box 100 from affecting normal operation of surrounding electrical equipment.
It can be understood that the box cover 600 further has a through hole, and the power wires, the data wires, etc. on the first circuit board 110 can be electrically connected to the circuit element interfaces (not shown) of the second circuit board 120, the external dc fan, the compressor fan, etc. through the through hole (not shown).
Referring to fig. 1 to 5, in an alternative embodiment, the second circuit board 120 is disposed in the box body 100, or the second circuit board 120 is disposed in the outdoor unit casing and outside the box body 100.
In this embodiment, the second circuit board 120 may be disposed in the casing 100 of the electronic control component, or may be disposed outside the casing 100, for example, on a mounting position corresponding to a casing of an outdoor unit of an air conditioner, for example, a top of the casing, and the second circuit board 120 may also be mounted on a mounting position corresponding to an indoor unit. In the present embodiment, the second circuit board 120 and the first circuit board 110 may be mounted in the box 100 of the electronic control assembly, and it can be understood that the mounting positions of the second circuit board 120 and the first circuit board 110 on the box 100 may be adjusted according to the respective plate types and sizes and the shape of the liquid storage tank 200, so as to adapt the box 100 to the liquid storage tank 200.
Referring to fig. 1 to 5, in an alternative embodiment, a power input interface Vin, a switching power supply 70 and an EMC filter circuit 80 are further disposed on the second circuit board 120, an input terminal of the switching power supply 70 is connected to the power input interface Vin, an input terminal of the EMC filter circuit 80 is connected to the power input interface Vin, and an output terminal of the EMC filter circuit 80 is connected to the rectifier bridge 20;
the input end of the switching power supply 70 is connected to the rectifier bridge 20, and the output end of the switching power supply 70 is electrically connected to the power supply end of the main controller 10.
In this embodiment, the switching power supply 70 may be composed of a transformer, a dc regulator chip, a switching power supply 70 chip, a voltage sampling resistor, a current sampling resistor, and other components, and the switching power supply 70 is configured to convert an ac power supply or a dc power supply to generate driving voltages with various values, for example, voltages of 3.3V, 5V, 12V, and 15V, to supply power to the components on the second circuit board 120, for example, the main controller 10 and the first circuit board 110. In this embodiment, the EMC filter circuit 80 can provide EMC, EMS, lightning protection, and other related functional protection for the second circuit board 120 and the first circuit board 110.
The invention also provides an outdoor unit.
Referring to fig. 5, the outdoor unit includes a compressor 700, a liquid storage tank 200 and the electric control assembly as described above, the electric control assembly is fixedly installed on an outer wall of the liquid storage tank 200, and a main controller of the electric control assembly is in communication with the indoor unit. The detailed structure of the electronic control assembly can refer to the above embodiments, and is not described herein again; it can be understood that, because the outdoor unit of the present invention employs the above-mentioned electronic control assembly, the embodiment of the outdoor unit of the present invention includes all technical solutions of all embodiments of the above-mentioned electronic control assembly, and the achieved technical effects are also completely the same, and are not described herein again.
In the above embodiment, the liquid storage tank 200 is disposed at one side of the compressor main body, and the box body is installed between the compressor main body and the liquid storage tank 200.
The working temperature of the liquid storage tank 200 is generally maintained between minus 20 ℃ and 30 ℃, so that moisture in the air can be condensed into condensed water in the liquid storage tank 200, the condensed water can enter the box body of the electric control component along the heat dissipation sheet metal on the outer wall of the liquid storage tank 200, the temperature of the compressor is generally higher than that of the liquid storage tank 200, the temperature of one side of the liquid storage tank 200 close to the compressor 700 is relatively higher and is basically the same as the ambient temperature, and the condensed water is not easy to form, so that the electric control box body 100 is arranged between the compressor main body and the liquid storage tank 200, and the condensed water formed on the liquid storage tank 200 can be prevented from entering the box body 100 of the electric control component to influence the normal.
The invention also provides an air conditioner, which comprises a compressor and the electric control assembly, wherein the compressor is provided with a liquid storage tank, and the electric control assembly is fixedly arranged on the outer wall of the liquid storage tank. Or the outdoor unit comprises an indoor unit and the outdoor unit as described above, wherein the main controller of the outdoor unit is in communication connection with the main control chip of the indoor unit.
It should be understood that the air conditioner includes all embodiments of the electrical control assembly or the outdoor unit, and has the same technical effects as the electrical control assembly or the outdoor unit, and the details are not described herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. An electric control assembly comprises a main controller, a rectifier bridge, a PFC circuit, a direct current bus capacitor and a compressor IPM module, wherein the rectifier bridge, the PFC circuit and the compressor IPM module are sequentially connected, the direct current bus capacitor is connected in parallel with the output end of the PFC circuit, and the main controller is respectively connected with the PFC circuit and the compressor IPM module; the PFC circuit comprises a PFC power switch and a PFC inductor; characterized in that, the electric control assembly further comprises:
the box body is detachably connected with the liquid storage tank of the compressor so as to dissipate heat through the contact of the liquid storage tank of the compressor;
the rectifier bridge, the compressor IPM module and the PFC power switch are arranged on the first circuit board, and the first circuit board is arranged in the box body;
the main controller, the PFC inductor and the direct current bus capacitor are arranged on the second circuit board;
the box body is provided with a first accommodating cavity and a second accommodating cavity, the rectifier bridge, the PFC power switch and the compressor IPM module are accommodated in the first accommodating cavity, the PFC inductor and the DC bus capacitor are accommodated in the second accommodating cavity, and the PFC inductor and the DC bus capacitor radiate heat through the second accommodating cavity; wherein, the outer wall of the second accommodating cavity is at least partially attached to the outer wall of the liquid storage tank.
2. The electrical control assembly of claim 1, wherein the second circuit board further comprises a power input interface, a switching power supply, and an EMC filter circuit, wherein an input of the EMC filter circuit is connected to the power input interface, and an output of the EMC filter circuit is connected to the rectifier bridge;
the input end of the switching power supply is connected with the rectifier bridge, and the output end of the switching power supply is electrically connected with the power end of the main controller.
3. An electrically controlled assembly according to claim 1, wherein the dc bus capacitor is plural in number.
4. The electronic control assembly of claim 1, further comprising a dc fan IPM module, wherein the dc fan IPM module is disposed on the first circuit board or the second circuit board, and wherein the dc fan IPM module is electrically connected to the main controller.
5. An electrically controlled assembly according to claim 1,
the PFC power switch is integrated in the compressor IPM module, or the PFC power switch and the compressor IPM module are separately arranged.
6. The electric control assembly according to any one of claims 1 to 5, further comprising a heat dissipation sheet metal, wherein one side of the heat dissipation sheet metal is fixedly mounted on one side surface of the liquid storage tank, and the other side of the heat dissipation sheet metal is detachably connected with the box body.
7. The electrical control assembly of claim 6, further comprising a mounting bracket having a first side and a second side opposite to each other, wherein the first side of the mounting bracket is attached to the first circuit board, the compressor IPM module is mounted on the second side of the mounting bracket, and the pins of the compressor IPM module are fixed to the first circuit board through the mounting bracket;
the box body is provided with an installation window, and the compressor IPM is attached to the heat dissipation metal plate through the installation window.
8. The electronic control assembly according to claim 7, wherein the rectifier bridge is mounted on the second side of the mounting bracket, a pin of the rectifier bridge penetrates through the mounting bracket to be fixedly connected with the first circuit board, and the rectifier bridge is attached to the heat dissipation sheet metal through the mounting window.
9. An outdoor unit, comprising a compressor and an electric control assembly as claimed in any one of claims 1 to 8, wherein the compressor has a liquid storage tank, the electric control assembly is fixedly mounted on an outer wall of the liquid storage tank, and a main controller of the electric control assembly is in communication with the indoor unit.
10. The outdoor unit of claim 9, wherein the compressor further has a compressor main body, the liquid tank is disposed at one side of the compressor main body, and the box body is installed between the compressor main body and the liquid tank.
11. An air conditioner, comprising a compressor and an electric control assembly as claimed in any one of claims 1 to 8, wherein the compressor is provided with a liquid storage tank, and the electric control assembly is fixedly arranged on the outer wall of the liquid storage tank; or comprises an indoor unit and the outdoor unit as claimed in claim 9 or 10, wherein the main controller of the outdoor unit is connected with the main control chip of the indoor unit in a communication way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810467327.8A CN110486852B (en) | 2018-05-14 | 2018-05-14 | Automatically controlled subassembly, off-premises station and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810467327.8A CN110486852B (en) | 2018-05-14 | 2018-05-14 | Automatically controlled subassembly, off-premises station and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110486852A CN110486852A (en) | 2019-11-22 |
| CN110486852B true CN110486852B (en) | 2021-08-31 |
Family
ID=68545404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810467327.8A Active CN110486852B (en) | 2018-05-14 | 2018-05-14 | Automatically controlled subassembly, off-premises station and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110486852B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111719A (en) * | 2005-02-03 | 2008-01-23 | 大金工业株式会社 | Outdoor unit of air conditioner |
| JP2008057870A (en) * | 2006-08-31 | 2008-03-13 | Daikin Ind Ltd | Refrigerating device |
| CN101509694A (en) * | 2009-03-16 | 2009-08-19 | 宁波德斯科电子科技有限公司 | DC frequency converting air-conditioner compressor intelligent controller and control method thereof |
| CN201416980Y (en) * | 2009-03-16 | 2010-03-03 | 宁波德斯科电子科技有限公司 | Direct-current frequency-varying air-conditioning compressor intelligent controller and air-conditioner controlled by same |
| CN202188633U (en) * | 2011-08-18 | 2012-04-11 | Tcl空调器(中山)有限公司 | Air source heat pump water heater |
| CN202587697U (en) * | 2012-05-29 | 2012-12-05 | 珠海格力电器股份有限公司 | Electric control box and outdoor unit of air conditioner |
| CN104010438A (en) * | 2013-02-22 | 2014-08-27 | 广东美的制冷设备有限公司 | PCB assembly and air-conditioner outdoor unit provided therewith |
| CN104134981A (en) * | 2014-07-02 | 2014-11-05 | 邯郸美的制冷设备有限公司 | Overvoltage protection device for air conditioner, overvoltage protection method and air conditioner |
| CN104848476A (en) * | 2015-04-28 | 2015-08-19 | 广东美的制冷设备有限公司 | Method and device for acquiring direct current busbar voltage given value of air conditioner system |
| CN105024539A (en) * | 2015-06-26 | 2015-11-04 | 广东美的制冷设备有限公司 | Voltage short interruption reply method and device of single-phase AC power supply |
| CN106918121A (en) * | 2017-03-31 | 2017-07-04 | 广东美的制冷设备有限公司 | Air-conditioner and its control method and device |
| CN107249249A (en) * | 2017-04-24 | 2017-10-13 | 广东美的暖通设备有限公司 | Outdoor unit electric control gear, outdoor unit and air conditioner |
| CN107676263A (en) * | 2017-10-30 | 2018-02-09 | 广东美的制冷设备有限公司 | Compressor control system, transducer air conditioning |
| CN107681929A (en) * | 2017-10-30 | 2018-02-09 | 广东美的制冷设备有限公司 | Electric machine control system, transducer air conditioning |
-
2018
- 2018-05-14 CN CN201810467327.8A patent/CN110486852B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101111719A (en) * | 2005-02-03 | 2008-01-23 | 大金工业株式会社 | Outdoor unit of air conditioner |
| JP2008057870A (en) * | 2006-08-31 | 2008-03-13 | Daikin Ind Ltd | Refrigerating device |
| CN101509694A (en) * | 2009-03-16 | 2009-08-19 | 宁波德斯科电子科技有限公司 | DC frequency converting air-conditioner compressor intelligent controller and control method thereof |
| CN201416980Y (en) * | 2009-03-16 | 2010-03-03 | 宁波德斯科电子科技有限公司 | Direct-current frequency-varying air-conditioning compressor intelligent controller and air-conditioner controlled by same |
| CN202188633U (en) * | 2011-08-18 | 2012-04-11 | Tcl空调器(中山)有限公司 | Air source heat pump water heater |
| CN202587697U (en) * | 2012-05-29 | 2012-12-05 | 珠海格力电器股份有限公司 | Electric control box and outdoor unit of air conditioner |
| CN104010438A (en) * | 2013-02-22 | 2014-08-27 | 广东美的制冷设备有限公司 | PCB assembly and air-conditioner outdoor unit provided therewith |
| CN104134981A (en) * | 2014-07-02 | 2014-11-05 | 邯郸美的制冷设备有限公司 | Overvoltage protection device for air conditioner, overvoltage protection method and air conditioner |
| CN104848476A (en) * | 2015-04-28 | 2015-08-19 | 广东美的制冷设备有限公司 | Method and device for acquiring direct current busbar voltage given value of air conditioner system |
| CN105024539A (en) * | 2015-06-26 | 2015-11-04 | 广东美的制冷设备有限公司 | Voltage short interruption reply method and device of single-phase AC power supply |
| CN106918121A (en) * | 2017-03-31 | 2017-07-04 | 广东美的制冷设备有限公司 | Air-conditioner and its control method and device |
| CN107249249A (en) * | 2017-04-24 | 2017-10-13 | 广东美的暖通设备有限公司 | Outdoor unit electric control gear, outdoor unit and air conditioner |
| CN107676263A (en) * | 2017-10-30 | 2018-02-09 | 广东美的制冷设备有限公司 | Compressor control system, transducer air conditioning |
| CN107681929A (en) * | 2017-10-30 | 2018-02-09 | 广东美的制冷设备有限公司 | Electric machine control system, transducer air conditioning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110486852A (en) | 2019-11-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10128770B2 (en) | Converter and electric power conversion apparatus | |
| JP5107114B2 (en) | Inverter-integrated electric compressor | |
| US20010012212A1 (en) | Motor driving inverter | |
| US20150163961A1 (en) | Power Conversion Apparatus | |
| WO2014175010A1 (en) | Inverter-integrated electric compressor | |
| CN208253884U (en) | Electrically-controlled component, outdoor unit and air conditioner | |
| CN109779892B (en) | Electric control assembly and air conditioner | |
| CN110486851B (en) | Automatically controlled subassembly, off-premises station and air conditioner | |
| CN212566202U (en) | Control device of air conditioner and air conditioner | |
| CN110486852B (en) | Automatically controlled subassembly, off-premises station and air conditioner | |
| CN110486847B (en) | Automatically controlled subassembly, off-premises station and air conditioner | |
| CN110085581B (en) | High-integration intelligent power module and air conditioner | |
| JP2013021918A (en) | Inverter integrated type electric compressor | |
| CN208238065U (en) | Outdoor unit and air conditioner | |
| CN208238066U (en) | Electrically-controlled component, outdoor unit and air conditioner | |
| CN211650663U (en) | Electric control assembly and air conditioner | |
| CN212339572U (en) | Air conditioner electric control board and air conditioner | |
| CN210128445U (en) | Automatically controlled subassembly, off-premises station and air conditioner | |
| CN209267447U (en) | Electrically-controlled component and air conditioner | |
| CN211127543U (en) | Inverter welding machine with PFC circuit | |
| JP2013252006A (en) | Motor driving device and air conditioner including the same | |
| CN110601555A (en) | High-integration intelligent power module and air conditioner | |
| CN112087151A (en) | Intelligent power module and air conditioner | |
| CN110601552A (en) | High-integration intelligent power module and electrical equipment | |
| CN220022637U (en) | Power supply converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |