CN113339988B - Control circuit and control method for air conditioner outdoor unit and air conditioner - Google Patents
Control circuit and control method for air conditioner outdoor unit and air conditioner Download PDFInfo
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- CN113339988B CN113339988B CN202110605633.5A CN202110605633A CN113339988B CN 113339988 B CN113339988 B CN 113339988B CN 202110605633 A CN202110605633 A CN 202110605633A CN 113339988 B CN113339988 B CN 113339988B
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- outdoor unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
Abstract
The application relates to the technical field of intelligent household appliances, and discloses a control circuit for an air conditioner outdoor unit, which comprises: the input end of the zero line is connected with the zero line of an outdoor power line, the input end of the live line is connected with the live line of the outdoor power line, and the two output ends of the first rectifying power module are connected with the two ends of the first energy storage module in parallel and connected with the fan control module in parallel; the input end of the zero line is connected with the zero line of the outdoor power line, the input end of the live line is connected with the live line of the outdoor power line, and the two output ends of the second rectification power supply module are connected with the chip control module in parallel; and the movable contact end is connected with the zero line input end of the first rectification power supply module and the zero line input end of the second rectification power supply module. This scheme is when outdoor fan reversal, guarantees that chip control circuit is out of work, avoids the high-tension electricity that fan reversal produced to cause air conditioner circuit breaker overcurrent tripping operation. The application also discloses a control method for the air conditioner outdoor unit and an air conditioner.
Description
Technical Field
The application relates to the technical field of intelligent household appliances, for example, to a control circuit and a control method for an air conditioner outdoor unit and an air conditioner.
Background
At present, after an air conditioner is shut down and enters a standby mode, an outdoor fan reversely rotates under the action of external wind power to generate power, a chip control circuit of an outdoor unit works in a charged mode, a power line of the outdoor unit charges a switch power capacitor of the chip control circuit, and an instantaneous value of charging current is large, so that an air conditioner breaker trips.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
in the related technology, a diode is added in an outdoor fan control circuit to prevent an outdoor fan from generating power to charge a capacitor, but when the outdoor fan has high electric energy, the diode is easy to be broken down reversely.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a control circuit and a control method for an air conditioner outdoor unit and an air conditioner, and aims to solve the technical problem that high-voltage electricity generated by reverse rotation of an air conditioner outdoor fan impacts a power supply of a chip control circuit.
In some embodiments, the control circuit comprises: the energy storage device comprises a fan control module, a chip control module and a first rectification power supply module, wherein the zero line input end of the first rectification power supply module is connected with the zero line of an outdoor power line, the fire line input end of the first rectification power supply module is connected with the fire line of the outdoor power line, and the two output ends of the first rectification power supply module are connected with the two ends of the first energy storage module in parallel and connected with the fan control module in parallel; the fan control module is used for supplying power to the fan control module; the input end of a zero line of the second rectifying power supply module is connected with a zero line of the outdoor power line, the input end of a live line of the second rectifying power supply module is connected with a live line of the outdoor power line, and the two output ends of the second rectifying power supply module are connected with the chip control module in parallel; the power supply is used for supplying power to the chip control module; and the static contact end of the first relay is connected with a zero line of the outdoor unit power line, and the movable contact end of the first relay is connected with the input end of the zero line of the first rectification power supply module and the input end of the zero line of the second rectification power supply module.
In some embodiments, the control method comprises: detecting the bus voltage of the compressor; under the condition that the bus voltage of the compressor is lower than the preset voltage, controlling the movable contact end of the first relay to keep a disconnected state so as to cut off a control circuit of the outdoor unit; and under the condition that the bus voltage of the compressor is greater than or equal to the preset voltage, controlling the movable contact end of the first relay to be closed so as to electrify the control circuit of the outdoor unit.
In some embodiments, the air conditioner includes: the control circuit for the air conditioner outdoor unit is disclosed.
The control circuit and the control method for the air conditioner outdoor unit and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:
aiming at a fan control module and a chip control module in an outdoor unit control circuit, power supply rectification modules are respectively arranged, and the two rectification modules are connected with a zero line of an outdoor unit power line through a first relay; the first relay can control the outdoor control circuit to be completely powered off; meanwhile, a first energy storage module is arranged; therefore, when the fan rotates reversely, the chip control circuit is guaranteed not to work, and overcurrent tripping of the air conditioner breaker caused by high voltage generated by reverse rotation of the fan is avoided.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic diagram of a control circuit for an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another control circuit for an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a control method for an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a control device for an outdoor unit of an air conditioner according to an embodiment of the present disclosure.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
With reference to fig. 1, an embodiment of the present disclosure provides a control circuit for an outdoor unit of an air conditioner, including a first rectification power supply module 1, a second rectification power supply module 2, a fan control module 3, a chip control module 4, a first energy storage module 5, and a first relay K1. The input end of a zero line of the first rectifying power supply module 1 is connected with a zero line AC-N of an outdoor unit power line, and the input end of a live line is connected with a live line AC-L of the outdoor unit power line; the two output ends are connected with two ends of the first energy storage module 5 in parallel and connected with the fan control module 3 in parallel; for powering the fan control module 3. The input end of a zero line of the second rectification power supply module 2 is connected with a zero line AC-N of an outdoor unit power line, the input end of a live line is connected with a live line AC-L of the outdoor unit power line, and the two output ends are connected with the chip control module 4 in parallel; for powering the chip control module 4. A static contact end of the first relay K1, namely a 13 th pin of the K1, is connected with a zero line AC-N of an outdoor unit power line, and a moving contact end, namely a 14 th pin of the K1, is connected with zero line input ends of the first rectification power supply module 1 and the second rectification power supply module 1.
In this embodiment, separate rectification power supply modules, namely a first rectification power supply module 1 and a second rectification power supply module 2, are provided for the fan control module 3 and the chip control module 4; the first rectification power supply module 1 rectifies alternating current of an outdoor unit power line into direct current to provide direct current for the fan control module 3; similarly, the second rectification power supply module 2 rectifies the alternating current of the outdoor unit power line into direct current to provide the direct current for the chip control module 4; in addition, the zero line input ends of the first rectifying power supply module 1 and the second rectifying power supply module 2 are connected with the zero line AC-N of the outdoor unit power line through a first relay K1; in this way, the fan control module 3 and the chip control module 4 have respective independent rectification power supply modules. Two ends of the first energy storage module 5 are connected in parallel with two output ends of the first rectification power supply module 1 and connected in parallel with the fan control module 3. In this way, the fan control module 3 has a separate energy storage module.
After the air conditioner is turned off and enters a standby state, the control circuit of the air conditioner outdoor unit is powered off, namely the first relay K1 cuts off a zero line AC-N of an outdoor unit power line, and the first rectifying power supply module 1 and the second rectifying power supply module 2 are powered off and do not work, so that the fan control module 3 and the chip control module 4 do not work; at this time, if the outdoor fan rotates rapidly due to external reasons such as strong wind, the fan generates electric energy, and the electric energy charges the first energy storage module 5, so that the first rectification power supply module 1 works in an electrified manner; because the chip control module 4 supplies power through the second rectification power supply module 2, and the second rectification power supply module 2 is in a power-off state, the chip control module 4 does not work, an outdoor unit control circuit cannot be awakened to exit a standby state, further, a power line of an outdoor unit cannot generate large current, and the air-conditioning circuit breaker F1 cannot trip due to overcurrent; therefore, the problem that the air conditioner breaker F1 is tripped due to reverse power generation of the fan when the air conditioner is in standby is solved through two independent rectifying circuits.
As an example, the first and second rectification power supply modules 1 and 2 each include a transformer and a rectification circuit, wherein the transformer steps down the high-voltage ac power of the outdoor unit power supply line to low-voltage ac power; the rectifying circuit rectifies the low-voltage alternating current into direct current; optionally, the rectifier circuit is a diode rectifier bridge circuit, and the input end of the rectifier circuit or the transformer is provided with a voltage dependent resistor to protect the rectifier power supply and the transformer. As an example, the first energy storage module 5 may be an electrolytic capacitor E1, such that the first energy storage module is both chargeable and dischargeable.
As an example, the first relay K1 is a normally open relay, that is, the first relay is turned on after being powered on and turned off after being powered off; when the air conditioner works normally, the first relay K1 is electrified and switched on, and alternating current of an outdoor unit power line is switched on to the first rectifying power supply module 1 and the second rectifying power supply module 2, so that the chip control module 4 and the fan control module 3 are electrified and work normally; after the air conditioner is turned off and enters a standby state, the first relay K1 is powered off and disconnected, and the power supply of the outdoor unit power line and the first rectification power supply module 1 and the second rectification power supply module 2 is cut off, so that the control circuit of the outdoor unit is completely powered off and enters the standby state.
Optionally, as shown in fig. 2, the control circuit for the outdoor unit of the air conditioner further includes a second relay K3, a fixed contact terminal of the second relay K3 is connected to one end of a communication line COM of the outdoor unit, and a moving contact terminal is connected to the communication circuit 7 of the outdoor unit; and the other end of the communication line COM of the outdoor unit is connected with a zero line of the power line of the indoor unit.
In this embodiment, the communication circuit of the outdoor unit is connected to the communication line COM of the outdoor unit through the second relay K3, and the communication line COM of the outdoor unit is connected to the zero line of the power line of the indoor unit, so that after the power line is plugged into the outdoor unit, the zero line of the power line of the indoor unit is connected to the communication line COM of the outdoor unit, and after the second relay K3 is connected, the power line of the indoor unit can supply power to the communication circuit 7 of the outdoor unit, thereby ensuring that the communication circuit 7 of the outdoor unit can work normally. As an example, the second relay K3 is a single-pole single-throw relay.
Optionally, a fixed contact end, i.e., a pin 33 of K3, of the second relay is connected to a communication line COM of the outdoor unit, a first moving contact end, i.e., a pin 35 of K3, is connected to a zero line input end of the first rectification power supply module BG1, i.e., a zero line input end of the second rectification power supply module BG2, and a second moving contact end, i.e., a pin 4 of K3, is connected to a communication circuit COM of the outdoor unit.
In this embodiment, the second relay K3 may be a single-pole double-throw relay, a stationary contact end, that is, a 33 th pin K3, of the second relay K3 is connected to a communication line COM of an outdoor unit, the communication line COM of the outdoor unit is connected to a zero line of a power line of an indoor unit, and two moving contacts are respectively connected to a communication circuit 7 of the outdoor unit, a zero line input end of a first rectification power supply module BG1, and a zero line input end of a second rectification power supply module BG 2; therefore, in the initial power-on stage of the outdoor unit, the first movable contact end of the second relay K3, namely the K3 th pin, is connected, the first rectification power supply module BG1 and the second rectification power supply module BG2 are powered by the zero line of the indoor unit power line through the second relay K3, so that the fan control module 3 and the chip control module 4 are powered, after the fan control module 3 and the chip control module 4 are electrified for a preset time period, the first movable contact end of the second relay is disconnected, namely the K3 th pin, and the second movable contact end is connected, namely the K3 th pin 34, and meanwhile, the K1 th pin 14 of the movable contact end of the first relay is closed; therefore, the first rectification power supply module BG1 and the second rectification power supply module BG2 are continuously supplied with power through the outdoor power supply line through the first relay K1, at the moment, the indoor machine power supply line supplies power to the communication circuit 7 of the outdoor machine control circuit, and normal work of the fan control circuit 3, the chip control circuit 4 and the communication circuit 7 is guaranteed.
Optionally, the control circuit further includes an overcurrent protection module, one end of the overcurrent protection module is connected to the 35 th pin of the first movable contact end K3 of the second relay K3, and the other end of the overcurrent protection module is connected to the zero line input end of the first rectification power supply module BG1, that is, the zero line input end of the second rectification power supply module BG2.
In this embodiment, after the outdoor unit of the air conditioner is powered on, that is, after the outdoor unit is plugged with a power line, the communication line COM of the outdoor unit is connected with a zero line of the power line of the indoor unit, and when the first movable contact end of the second relay, that is, the 35 th pin K3, is connected, the power line of the indoor unit can respectively supply power to the first rectification power module BG1 and the second rectification power module BG2 through the second relay K3, so as to respectively supply power to the fan control module 3 and the chip control module 4; in this case, in order to avoid the circuit fault caused by the excessive current, an overcurrent protection module is arranged between the 35 th pin of the first movable contact end K3 of the second relay and the zero line input end of the first rectification power supply module BG1 and the zero line input end of the second rectification power supply module BG2, so as to protect the circuit from the excessive current. As an example, the overcurrent protection module may be a thermistor PCT, or may be an overcurrent protector.
Optionally, the control circuit further includes a second energy storage module 6, two ends of which are respectively connected in parallel with the two output ends of the second rectification power supply module BG2 and connected in parallel with the chip control module 4.
In this embodiment, the chip control module 4 is connected in parallel with the second energy storage module 6, where the chip control module 6 is mainly used to control the compressor, and the second rectification power supply module BG2 charges the second energy storage module 6, so that the chip control module 4 can normally operate. As an example, the second energy storage module is an electrolytic capacitor E2.
Referring to fig. 3, an embodiment of the present disclosure provides a control method for an outdoor unit of an air conditioner, including:
and S01, detecting the bus voltage of the compressor by the air conditioner controller.
And S02, the air conditioner controller controls the movable contact end of the first relay to keep a disconnection state under the condition that the bus voltage of the compressor is less than the preset voltage, so that the control circuit of the outdoor unit is powered off.
And S03, the air conditioner controller controls the movable contact end of the first relay to be closed under the condition that the bus voltage of the compressor is greater than or equal to the preset voltage, so that the control circuit of the outdoor unit is electrified.
In this embodiment, when the control circuit of the outdoor unit is powered on, the power supply voltage of the compressor needs to be determined, that is, the bus voltage of the compressor is detected; if the bus voltage of the compressor is smaller than the preset voltage, the first relay K1 is not closed, the first energy storage module 5 is powered by the electric energy generated by the high-speed running of the fan under the external factors, the first energy storage module 5 supplies power to the first rectifying power supply module 1 but cannot supply power to the second rectifying power supply module 2, and the chip control module 4 cannot work when no power is supplied; under the condition, the air conditioner controller does not execute the control logic of the electrification of the outdoor unit so as to avoid the tripping of an air conditioner breaker due to the fact that the power supply of a power line of the outdoor unit causes overlarge instantaneous current.
If the bus voltage is greater than or equal to the preset voltage, the outdoor unit is awakened, namely the air conditioner controller controls the first relay K1 to be closed, and the first rectifying power supply module 1 and the second rectifying power supply module 2 are respectively supplied with power by an outdoor unit power line so as to ensure the normal work of the outdoor unit control circuit. As an example, the preset voltage may be 170V or 180V, or may be a range of 160-190V, for example.
By adopting the control method for the outdoor unit of the air conditioner, the complete power-off of the outdoor control circuit can be controlled through the first relay; when the fan reverses, the chip control circuit is guaranteed not to work, and therefore overcurrent tripping of the air conditioner breaker caused by high voltage generated by fan reversal is avoided.
Optionally, in step S03, the air conditioner controller controls the movable contact end of the first relay, that is, the K1 14 th pin, to be closed when the bus voltage of the compressor is greater than or equal to the preset voltage, so that before the control circuit of the outdoor unit is powered on, the method includes:
and S31, controlling the power line of the indoor unit to be connected, controlling the first movable contact end of the second relay, namely the 5 th pin K3 to be closed, and supplying power to the first rectification power supply module BG1 and the second rectification power supply module BG2.
S32, after the first movable contact end of the second relay, namely the 35 th pin of the K3, is closed for a preset time, the second movable contact end of the second relay, namely the 34 th pin of the K3, is controlled to be closed, so that the communication circuit works, and the movable contact end of the first relay, namely the 14 th pin of the K1, is controlled to be closed.
In this embodiment, before the second movable contact end of the second relay, that is, the 34 th pin K3, is connected, the first rectification power supply module BG1 and the second rectification power supply module BG2 are powered by the indoor unit power line, so that the fan control module 3 and the chip control module 4 operate, that is, the outdoor unit power line is connected with the first rectification power supply module and the second rectification power supply module by closing the first movable contact end of the second relay, that is, the 35 th pin K3; after the fan control module 3 and the chip control module 4 supply power for a preset time, controlling a first movable contact end, namely a K3 35 th pin, of the second relay to be disconnected and a second movable contact end, namely a K3 34 th pin, of the second relay to be connected, so that an outdoor unit power line supplies power for a first rectification power module BG1 and a second rectification power module BG2, and meanwhile, an indoor unit power line supplies power for a communication circuit 7 of an outdoor unit; therefore, after the fan control module 3 and the chip control module 4 are normally started, the communication circuit 7 of the outdoor unit is controlled to be electrified so as to receive a control instruction and control the operation of the outdoor unit; wherein the preset time period can be 3-5 minutes. Therefore, the normal work of the outdoor unit control circuit can be better controlled, and the problem that the air conditioner breaker trips F1 is solved.
Optionally, in step S02, the air conditioner controller controls the movable contact terminal of the first relay, that is, the 14 th pin of K1, to maintain an open state when the voltage of the compressor bus is lower than a preset voltage, so that after the control circuit of the outdoor unit is powered off, the air conditioner controller includes: and controlling the first movable contact end of the second relay, namely the 35 th pin of the K3 to be closed so as to cut off the communication circuit.
In this embodiment, after the outdoor unit control circuit is powered off, the first movable contact end of the second relay is controlled to be closed, that is, the 35 th pin of K3, and the second movable contact end, that is, the 34 th pin of K3, are controlled to be opened, so that the communication circuit of the outdoor unit is powered off and does not receive the instruction of the air conditioner controller; meanwhile, the first movable contact end is closed, namely a 35 th pin of the K3, so that the first rectification power supply module BG1 and the second rectification power supply module BG2 are connected with a zero line of an indoor unit power line through a communication line COM of an outdoor unit, when the outdoor unit is powered on, after the outdoor unit is plugged with the power line, the indoor unit power line is communicated with the communication line COM of the outdoor unit, and power is supplied to the first rectification power supply module BG1 and the second rectification power supply module BG2.
As shown in fig. 4, an embodiment of the present disclosure provides a control device for an outdoor unit of an air conditioner, including a processor (processor) 100 and a memory (memory) 101. Optionally, the apparatus may also include a Communication Interface (Communication Interface) 102 and a bus 103. The processor 100, the communication interface 102, and the memory 101 may communicate with each other via a bus 103. The communication interface 102 may be used for information transfer. The processor 100 may call logic instructions in the memory 101 to execute the control method for the air conditioner outdoor unit according to the above embodiment.
In addition, the logic instructions in the memory 101 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products.
The memory 101 is used as a computer readable storage medium for storing software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 100 executes functional applications and data processing by executing program instructions/modules stored in the memory 101, that is, implements the control method for the outdoor unit of the air conditioner in the above embodiments.
The memory 101 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a nonvolatile memory.
The embodiment of the disclosure provides an air conditioner, which comprises the control device for the outdoor unit of the air conditioner.
The embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions configured to perform the above-described control method for an outdoor unit of an air conditioner.
An embodiment of the present disclosure provides a computer program product including a computer program stored on a computer-readable storage medium, the computer program including program instructions that, when executed by a computer, cause the computer to perform the above-described control method for an outdoor unit of an air conditioner.
The computer-readable storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising a …" does not exclude the presence of additional like elements in a process, method, or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
Claims (10)
1. The utility model provides a control circuit for air condensing units, includes fan control module and chip control module, its characterized in that still includes:
the input end of a zero line of the first rectifying power supply module is connected with a zero line of an outdoor unit power line, the input end of a live wire is connected with a live wire of the outdoor unit power line, and two output ends of the first rectifying power supply module are connected with two ends of a first energy storage module in parallel and connected with the fan control module in parallel and used for supplying power to the fan control module;
the input end of a zero line of the second rectification power supply module is connected with a zero line of the outdoor unit power line, the input end of a live line is connected with a live line of the outdoor unit power line, and the two output ends of the second rectification power supply module are connected with the chip control module in parallel and used for supplying power to the chip control module;
the static contact end of the first relay is connected with a zero line of the outdoor unit power line, and the movable contact end of the first relay is connected with the input end of the zero line of the first rectification power supply module and the input end of the zero line of the second rectification power supply module;
after the air conditioner is turned off and enters a standby state, the first relay disconnects the zero line of the outdoor unit power line.
2. The control circuit of claim 1, further comprising:
the fixed contact end of the second relay is connected with one end of a communication line of the outdoor unit, and the movable contact end of the second relay is connected with a communication circuit of the outdoor unit;
and the other end of the communication line of the outdoor unit is connected with a zero line of the power line of the indoor unit.
3. The control circuit of claim 2,
and a static contact end of the second relay is connected with one end of a communication line of the outdoor unit, a first movable contact end is connected with a zero line input end of the first rectification power supply module and a zero line input end of the second rectification power supply module, and a second movable contact end is connected with a communication circuit of the outdoor unit.
4. The control circuit of claim 3, further comprising:
and one end of the overcurrent protection module is connected with the first movable contact end of the second relay, and the other end of the overcurrent protection module is connected with the zero line input end of the first rectification power supply module and the zero line input end of the second rectification power supply module.
5. The control circuit of claim 1, further comprising:
and two ends of the second energy storage module are respectively connected with the two output ends of the second rectification power supply module in parallel and connected with the chip control module in parallel.
6. A control method for an outdoor unit of an air conditioner based on the control circuit for an outdoor unit of an air conditioner of any one of claims 1 to 5, wherein the control method comprises:
detecting the bus voltage of the compressor;
under the condition that the bus voltage of the compressor is less than the preset voltage, controlling a movable contact end of a first relay to keep a disconnected state so as to cut off a control circuit of the outdoor unit;
and under the condition that the bus voltage of the compressor is greater than or equal to the preset voltage, controlling the movable contact end of the first relay to be closed so as to electrify the control circuit of the outdoor unit.
7. The control method according to claim 6, wherein before controlling the movable contact terminal of the first relay to close, the method further comprises:
and controlling the power line of the indoor unit to be connected, controlling the first movable contact end of the second relay to be closed, and supplying power to the first rectification power supply module and the second rectification power supply module.
8. The control method according to claim 7, wherein after the controlling the first movable contact terminal of the second relay to be closed, the method further comprises:
and after the first movable contact end of the second relay is closed for a preset time, the second movable contact end of the second relay is controlled to be closed, so that the communication circuit works, and the movable contact of the first relay is controlled to be closed.
9. The control method according to claim 7, wherein after the controlling the movable contact terminal of the first relay to be disconnected, the method further comprises:
and controlling the first movable contact of the second relay to close so as to cut off the communication circuit.
10. An air conditioner comprising the control circuit for an outdoor unit of an air conditioner according to any one of claims 1 to 5.
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| CN202110605633.5A CN113339988B (en) | 2021-05-31 | 2021-05-31 | Control circuit and control method for air conditioner outdoor unit and air conditioner |
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| CN202110605633.5A CN113339988B (en) | 2021-05-31 | 2021-05-31 | Control circuit and control method for air conditioner outdoor unit and air conditioner |
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| CN114061124B (en) * | 2021-10-15 | 2024-02-13 | 佛山市顺德区美的电子科技有限公司 | Control circuit, control method, equipment and storage medium of air conditioner outdoor unit |
| CN114396711B (en) * | 2022-01-11 | 2023-02-28 | 珠海格力电器股份有限公司 | Standby control circuit of air conditioner outdoor unit and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS5896935A (en) * | 1981-12-07 | 1983-06-09 | Sharp Corp | Control circuit for air conditioner |
| JP4250217B2 (en) * | 1997-12-17 | 2009-04-08 | 東芝トランスポートエンジニアリング株式会社 | Reverse rotation start determination and clogging determination device for electric blower |
| CN201248023Y (en) * | 2008-07-24 | 2009-05-27 | 广东美的电器股份有限公司 | Control circuit for DC fan motor of outdoor unit of air conditioner |
| CN204555126U (en) * | 2014-12-26 | 2015-08-12 | 珠海格力电器股份有限公司 | Air-conditioning system |
| CN111293954B (en) * | 2020-03-16 | 2021-08-20 | 珠海格力电器股份有限公司 | Frequency converter brake control method and circuit and air conditioner |
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