CN113028580A - Energy-saving starting control method and device for compressor, energy-saving starting device and air conditioner - Google Patents
Energy-saving starting control method and device for compressor, energy-saving starting device and air conditioner Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 37
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
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- 238000010586 diagram Methods 0.000 description 12
- 239000003507 refrigerant Substances 0.000 description 11
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- 230000009286 beneficial effect Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
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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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump 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
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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Abstract
The embodiment of the invention provides an energy-saving starting control method and device for a compressor, an energy-saving starting device and an air conditioner, and relates to the field of air conditioners. The air conditioner comprises a compressor and an energy recovery module, wherein the energy recovery module is electrically connected with a motor of the compressor; the control method comprises the following steps: when the compressor is in a shutdown state, controlling a motor of the compressor to rotate reversely so as to convert the internal energy of the condensing agent of the compressor into electric energy, and storing the electric energy through an energy recovery module; and when the compressor is started, controlling the energy recovery module to start the compressor. The embodiment of the invention can realize energy recovery, energy conservation and emission reduction.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an energy-saving starting control method and device for a compressor, an energy-saving starting device and an air conditioner.
Background
With the development of economy, the air conditioner is used more and more. The air conditioner consumes more and more energy while bringing comfort and convenience to people. How to effectively reduce the energy consumption of the air conditioner has important significance on 'energy conservation and emission reduction'. At present, the inverter air conditioner occupies the main share of the market, although the energy-saving purpose is realized by greatly reducing the starting and stopping times of the compressor, the starting and stopping times of the compressor still have more times when the inverter air conditioner is used, especially when the indoor and outdoor temperature difference is small, the starting and stopping times of the compressor are obviously increased, and the energy-saving effect is not ideal.
Disclosure of Invention
The invention solves the problems that the energy consumption is increased due to the fact that the number of times of starting and stopping the compressor is large, and the energy-saving effect of the air conditioner is not ideal.
In order to solve the above problems, embodiments of the present invention provide an energy-saving start control method and apparatus for a compressor, an energy-saving start apparatus, and an air conditioner, which can achieve energy recovery, energy saving, and emission reduction, and have a better energy-saving effect.
In a first aspect, the present invention provides an energy saving start control method for a compressor, which is used for an air conditioner, wherein the air conditioner comprises the compressor and an energy recovery module, the energy recovery module is electrically connected with a motor of the compressor, and the control method comprises:
when the compressor is in a shutdown state, controlling a motor of the compressor to rotate reversely so as to convert the internal energy of the condensing agent of the compressor into electric energy, and storing the electric energy through the energy recovery module;
and when the compressor is started, controlling the energy recovery module to start the compressor.
The embodiment of the invention provides an energy-saving starting control method of a compressor, which comprises the following steps: after the compressor obtains a stop instruction, the motor is controlled to rotate reversely, so that the internal energy of the condensing agent of the compressor does work on the motor, the internal energy is converted into electric energy through the motor, and the electric energy is stored in the energy recovery module, and therefore the energy recovery is achieved. When the compressor is started next time, the compressor is started through the electric energy stored in the energy recovery module, and the effects of energy conservation and emission reduction are achieved. In the embodiment of the invention, the internal energy of the condensing agent can be recycled, the internal energy of the condensing agent is converted into the electric energy stored in the energy recovery module, and the starting of the compressor is realized. Meanwhile, the reverse rotation of the motor can also enable the pressure of the air inlet and the pressure of the air outlet of the compressor to be balanced quickly, so that when the compressor is restarted quickly, the pressure difference between the air inlet and the air outlet of the compressor is reduced, and the quick restart of the compressor is facilitated. The embodiment of the invention can realize energy recovery, energy conservation and emission reduction.
In an alternative embodiment, the step of controlling the energy recovery module to start the compressor when the compressor is started comprises:
acquiring a starting instruction of the compressor;
and controlling the energy recovery module to start the compressor.
In an optional embodiment, before the step of controlling the energy recovery module to start the compressor, the step of controlling the energy recovery module to start the compressor at the time of starting the compressor further includes:
and charging the energy recovery module by using commercial power.
In an alternative embodiment, the compressor is connected to the mains through a PFC;
the step of controlling the energy recovery module to start the compressor includes:
controlling the PFC to disconnect the PFC from the mains.
In an alternative embodiment, after the step of controlling the energy recovery module to start the compressor, the control method further includes:
acquiring the current voltage of the energy recovery module;
judging whether the current voltage of the energy recovery module is less than or equal to a preset voltage or not;
and if the current voltage of the energy recovery module is less than the set voltage, controlling the compressor to supply power through the commercial power.
In an alternative embodiment, the compressor is connected to the mains through a PFC;
if the current voltage of the energy recovery module is less than the set voltage, the step of controlling the compressor to supply power through the commercial power comprises the following steps:
and controlling the PFC to be started so as to electrically connect the compressor with the mains supply and supply power to the compressor through the mains supply.
In an alternative embodiment, the energy recovery module comprises a super capacitor connected in parallel to the dc bus of the compressor.
In a second aspect, the present invention provides an energy saving start control device for a compressor, which is used for an air conditioner, the air conditioner includes a compressor and an energy recovery module, the energy recovery module is electrically connected to a motor of the compressor, and the control device includes:
a first control module: the energy recovery module is used for controlling the motor of the compressor to rotate reversely when the compressor is in a stop state so as to convert the internal energy of the condensing agent of the compressor into electric energy and store the electric energy through the energy recovery module;
a second control module: and the energy recovery module is used for controlling the energy recovery module to start the compressor when the compressor is started.
The embodiment of the invention provides an energy-saving starting control device of a compressor, which comprises the following steps: after the compressor obtains a stop instruction, the motor is controlled to rotate reversely, so that the internal energy of the condensing agent of the compressor does work on the motor, the internal energy is converted into electric energy through the motor, and the electric energy is stored in the energy recovery module, and therefore the energy recovery is achieved. When the compressor is started next time, the compressor is started through the electric energy stored in the energy recovery module, and the effects of energy conservation and emission reduction are achieved. In the embodiment of the invention, the internal energy of the condensing agent can be recycled, the internal energy of the condensing agent is converted into the electric energy stored in the energy recovery module, and the starting of the compressor is realized. Meanwhile, the reverse rotation of the motor can also enable the pressure of the air inlet and the pressure of the air outlet of the compressor to be balanced quickly, so that when the compressor is restarted quickly, the pressure difference between the air inlet and the air outlet of the compressor is reduced, and the quick restart of the compressor is facilitated. The embodiment of the invention can realize energy recovery, energy conservation and emission reduction.
In a third aspect, the invention provides an energy-saving starting device for a compressor, which is used for an air conditioner, and comprises the compressor, a frequency converter, a PFC and an energy recovery module, wherein a motor of the compressor is electrically connected with the frequency converter, the frequency converter is electrically connected with the PFC through a direct current bus, the PFC is connected with a mains supply, and the energy recovery module is connected in parallel to the direct current bus.
The embodiment of the invention provides an energy-saving starting device of a compressor, which comprises the following components: after the compressor obtains a stop instruction, the motor is controlled to rotate reversely, so that the internal energy of the condensing agent of the compressor does work on the motor, the internal energy is converted into electric energy through the motor, and the electric energy is stored in the energy recovery module, and therefore the energy recovery is achieved. When the compressor is started next time, the compressor is started through the electric energy stored in the energy recovery module, and the effects of energy conservation and emission reduction are achieved. In the embodiment of the invention, the internal energy of the condensing agent can be recycled, the internal energy of the condensing agent is converted into the electric energy stored in the energy recovery module, and the starting of the compressor is realized. Meanwhile, the reverse rotation of the motor can also enable the pressure of the air inlet and the pressure of the air outlet of the compressor to be balanced quickly, so that when the compressor is restarted quickly, the pressure difference between the air inlet and the air outlet of the compressor is reduced, and the quick restart of the compressor is facilitated. The embodiment of the invention can realize energy recovery, energy conservation and emission reduction.
In a fourth aspect, the present invention provides an air conditioner, including a controller, a compressor and an energy recovery module, wherein the compressor is electrically connected to the controller, the energy recovery module is electrically connected to a motor of the compressor, the controller stores an energy saving start control program of the compressor, the energy saving start control program is operable, and when the control program is read and executed, the control method according to any one of the foregoing embodiments is implemented.
The air conditioner provided by the embodiment of the invention comprises: after the compressor obtains a stop instruction, the motor is controlled to rotate reversely, so that the internal energy of the condensing agent of the compressor does work on the motor, the internal energy is converted into electric energy through the motor, and the electric energy is stored in the energy recovery module, and therefore the energy recovery is achieved. When the compressor is started next time, the compressor is started through the electric energy stored in the energy recovery module, and the effects of energy conservation and emission reduction are achieved. In the embodiment of the invention, the internal energy of the condensing agent can be recycled, the internal energy of the condensing agent is converted into the electric energy stored in the energy recovery module, and the starting of the compressor is realized. Meanwhile, the reverse rotation of the motor can also enable the pressure of the air inlet and the pressure of the air outlet of the compressor to be balanced quickly, so that when the compressor is restarted quickly, the pressure difference between the air inlet and the air outlet of the compressor is reduced, and the quick restart of the compressor is facilitated. The embodiment of the invention can realize energy recovery, energy conservation and emission reduction.
Drawings
Fig. 1 is a block diagram schematically illustrating a structure of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a structure of an energy-saving starting apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic block diagram illustrating a flow chart of a method for controlling an energy-saving start-up of a compressor according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the operating state of the compressor and the corresponding energy content of the refrigerant;
FIG. 5 is a schematic view of a single rotor compressor during forward rotation of the motor;
FIG. 6 is a schematic view of a single rotor compressor with the motor reversed;
fig. 7 is a flowchart illustrating sub-steps of step S200 according to an embodiment of the present invention;
fig. 8 is a schematic flowchart of steps S300 and S400 according to an embodiment of the present invention;
fig. 9 is a block diagram schematically showing the structure of the energy-saving start control device in fig. 1.
Icon: 100-an air conditioner; 10-energy-saving start control device; 20-a controller; 30-a compressor; 40-an energy recovery module; 50-a motor; 60-direct current bus; 70-PFC; 80-frequency converter.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the invention provides an energy-saving start control device 10 applied to an air conditioner 100. The air conditioner 100 includes an energy saving start-up control device 10, a controller 20, and a compressor 30. The power-saving activation control apparatus 10 includes at least one software functional module that may be stored in the controller 20 in the form of software or firmware (firmware) or solidified in an Operating System (OS) of the server. The controller 20 is used for executing executable modules stored therein, such as software functional modules and computer programs included in the energy-saving start-up control device 10.
The controller 20 may be an integrated circuit chip having signal processing capabilities. The controller 20 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor. The controller 20 may also be any conventional processor or the like.
The controller 20 is programmed with an energy-saving start control program, and when the controller 20 receives an execution instruction, the energy-saving start control program is executed.
Referring to fig. 2, a schematic diagram of a compressor 30 and its circuit hardware according to an embodiment of the invention is shown. In the embodiment of the present invention, for the compressor 30, the motor 50 is used to drive the compressor 30 to operate, the commercial Power is connected to the motor 50 through a PFC70(Power Factor Correction, meaning "Power Factor Correction"), a dc bus 60, and an inverter 80, and the energy recovery module 40 is connected in parallel to the dc bus 60. The motor 50 of the compressor 30 is electrically connected to the energy recovery module 40 to charge the energy recovery module 40 when the motor 50 is reversed. In the embodiment of the invention, when the compressor is shut down, the internal energy of the condensing agent of the compressor 30 is converted into electric energy, and the electric energy is stored through the energy recovery module 40, so that the internal energy of the condensing agent is recycled. Meanwhile, when the compressor 30 is started next time, the compressor 30 can be started by using the electric energy stored in the energy recovery module 40, so that the effects of energy conservation and emission reduction are achieved.
Meanwhile, fig. 2 is a schematic diagram of an energy-saving starting device provided in the embodiment of the present invention. The energy-saving starting device comprises a compressor 30, a frequency converter 80, a PFC70 and an energy recovery module 40, wherein a motor 50 of the compressor 30 is electrically connected with the frequency converter 80, the frequency converter 80 is electrically connected with a PFC70 through a direct current bus 60, the PFC70 is connected with a mains supply, and the energy recovery module 40 is connected to the direct current bus 60 in parallel. The energy recovery module 40 may be a super capacitor, a lithium battery, or other electric devices with an energy storage function.
Referring to fig. 3, which shows a flow chart of an energy-saving start control method of the compressor 30, in an embodiment of the present invention, the energy-saving start control method includes the following steps.
Step S100: the motor 50 of the compressor 30 is controlled to rotate reversely in a stopped state of the compressor 30 to convert the internal refrigerant energy of the compressor 30 into electric energy and store the electric energy through the energy recovery module 40.
Referring to fig. 4, a schematic diagram of the variation of the refrigerant energy content of the compressor 30 during a complete operation is shown. As shown in fig. 4, the operation state of the compressor 30 includes three parts: start-up, run, and shut-down. When the compressor is started, the compressor 30 rotates forwards to compress the condensing agent, so that the internal energy of the condensing agent is increased; the energy content of the refrigerant in operation is related to the rotational speed of the compressor 30; at shutdown, the compressor 30 is stopped and the internal refrigerant energy is reduced to an initial state as the line pressure differential and temperature drop. In the embodiment of the present invention, in step S100, after the compressor 30 obtains the shutdown instruction, the motor 50 is controlled to rotate reversely, so that the internal energy of the condensing agent of the compressor 30 applies work to the motor 50, and the internal energy is converted into electric energy by the motor 50 and stored in the energy recovery module 40, thereby recovering energy and achieving the effects of energy saving and emission reduction.
Referring to fig. 5 and 6, the single-rotor compressor 30 is shown in a schematic view of the normal rotation and the reverse rotation, respectively. When the compressor 30 rotates forward, the operation state of the compressor 30 is the starting and operation state of the three operation states, as shown in fig. 5, the rotation direction of the rotor is opposite to the stress direction of the rotor (the rotor rotates counterclockwise), so that the pressure of the exhaust port of the compressor 30 is higher than the pressure of the air inlet, and the compression work on the condensing agent is realized; when the compressor 30 rotates reversely, the rotor rotates clockwise, as shown in fig. 6, the pressure difference between the air inlet and the air outlet makes the rotor rotate clockwise, i.e. the force direction of the rotor is consistent with the rotation direction of the rotor, so as to drive the motor 50 to generate electricity, i.e. the internal energy of the condensing agent is converted into electric energy, the energy recovery module 40 is electrically connected with the motor 50, and the electric energy converted by the motor 50 can be stored.
It should be noted that, when step S100 is executed, the compressor 30 is in a shutdown state, and stops operating after receiving a shutdown command, and is located substantially at the leftmost end of the "shutdown" part in fig. 4, and at this time, the pressure difference between the exhaust port and the air inlet port of the compressor 30 is near the maximum value, so that the energy recovery effect is the best, and the energy saving and emission reduction effects are achieved. The reverse rotation of the motor 50 can be realized by controlling the frequency converter 80, thereby realizing energy recovery and lifting direct-current voltage.
When step S100 is executed, a stop instruction for the compressor 30 is first acquired, and the compressor 30 is controlled to stop. And then the motor 50 is controlled to rotate reversely, and the motor 50 is driven to rotate reversely to generate power through the internal energy of the condensing agent, so that the internal energy of the condensing agent is recycled. When the compressor 30 is shut down, the PFC70 is turned off, the motor 50 generates electricity, and the electricity is stored in the energy recovery module 40.
In the embodiment of the present invention, the motor 50 is controlled to rotate reversely, so that the pressure difference between the air inlet and the air outlet of the compressor 30 applies work to the motor 50, and the internal energy of the condensing agent is converted into electric energy. The process is not only slow but also causes a waste of internal energy of the condensing agent. In the embodiment of the present invention, on one hand, the internal energy of the condensing agent can be recycled, and on the other hand, the pressure of the air inlet and the air outlet of the compressor 30 can be rapidly balanced, so that when the compressor 30 is rapidly restarted, the pressure difference between the air inlet and the air outlet of the compressor 30 is reduced, which is beneficial to rapidly restarting the compressor 30.
Step S200: when the compressor 30 is started, the energy recovery module 40 is controlled to start the compressor 30.
In order to clearly illustrate the energy recovery and energy saving and emission reduction effects of the embodiment of the present invention, the following takes a 1.5P air conditioner as an example to illustrate the technical effects of the embodiment of the present invention in step S100 and step S200.
When the 1.5P air conditioner operates at rated power, the pressure difference between the inlet and the outlet of the compressor 30 can reach 2Mpa, and the volumes of the compressor 30 and the refrigerant in the copper pipe are about 0.1m3. For the sake of convenience of calculation, neglecting the energy conversion of refrigerant gasification and liquefaction, and assuming that the refrigerant pressure in the pipe is approximately linearly decreased, the gas energy supply is used to calculate the internal energy of the refrigerant at the shutdown time after the rated operation as follows: q ═ P1V-P2V ≈ 0.5 × 0.1 × 2e3kJ ═ 100kJ, where PiCorresponding to the inlet and outlet pressures of the compressor 30. If the energy recovery module 40 is designed as a 1F super capacitor and the voltage of the air conditioner 100 is designed as 380V, the voltage of the super capacitor will rise to 380V based on the voltage of the super capacitor when the super capacitor absorbs the energy
The part of energy is stored in the super capacitor, and when the next starting (namely step S200 is executed), 587V is larger than 380V, so that when the PFC70 is cut off, the compressor 30 can be started only by using the super capacitor, the utilization of the recovered electric energy is realized, and the effects of energy conservation and emission reduction are achieved.
Referring to fig. 7, in an alternative embodiment, step S200 includes sub-step S210: acquiring a starting instruction of the compressor 30; and, substep S220: the energy recovery module 40 is controlled to start the compressor 30.
In sub-steps S210 and S220, the energy recovery module 40 has stored therein electric energy, which may be converted from the pressure difference between the inlet and the outlet of the compressor 30 in step S100. That is, when the compressor 30 is stopped at the previous time, the motor 50 is controlled to rotate reversely, so that the internal energy of the refrigerant of the compressor 30 applies work to the motor 50, and the internal energy is converted into electric energy and stored by the energy recovery module 40. In the sub-step S210, the compressor 30 obtains the start instruction, and the compressor 30 may be started by using the electric energy stored in the energy recovery module 40, so as to achieve utilization of the recovered energy.
Further, step S220 may comprise a sub-step S221 of: the PFC70 is controlled to disconnect the PFC70 from the mains. After the PFC70 is disconnected from the utility power, i.e., the compressor 30 is disconnected from the utility power, the compressor 30 may be started by the energy recovery module 40. For the scheme of connecting the super capacitor in parallel, when the commercial power is cut off, the compressor 30 can be started by the super capacitor after receiving the starting instruction. For other forms of the energy recovery module 40, a circuit may be designed to selectively electrically connect the energy recovery module 40 and the commercial power to the compressor 30, so that the energy recovery module 40 supplies power when the compressor 30 is started, and the commercial power supplies power when the compressor 30 is stably operated.
It should be noted that, when the energy recovery module 40 may not store electric energy at the time of the first start, the step S200 may further include the sub-step S230: the energy recovery module 40 is charged by commercial power, and for the scheme that the super capacitor is connected in parallel with the direct current bus 60, the super capacitor can be charged by commercial power, and then the compressor 30 is started; for lithium batteries and the like, the compressor 30 may be started directly by mains power through the PFC 70. When the compressor is not started for the first time, the energy recovery module 40 stores electric energy, and the compressor 30 can be directly started through the energy recovery module 40.
Referring to fig. 8, in an alternative embodiment, after step S200, the method further includes the following steps: step S300: acquiring the current voltage of the energy recovery module 40; step S400: judging whether the current voltage of the energy recovery module 40 is less than the set voltage, if so, executing step S500: the compressor 30 is controlled to be powered by mains electricity.
Note that, in step S400, the set voltage is a voltage at which the compressor 30 operates, such as 380V described above. In steps S300 to S500, the compressor 30 is provided with electric energy by fully utilizing the electric energy in the energy recovery module 40 until the electric energy in the energy recovery module 40 is insufficient for the compressor 30 to work normally.
Optionally, the compressor 30 is connected to the mains via a PFC70, and step S500 includes the sub-step S510: the PFC70 is controlled to be turned on so that the compressor 30 is electrically connected to the utility power and the compressor 30 is supplied with power from the utility power.
The energy-saving start control method of the compressor 30 provided by the embodiment of the invention comprises the following steps: after the compressor 30 obtains a shutdown instruction, the motor 50 is controlled to rotate reversely, so that the internal energy of the condensing agent of the compressor 30 applies work to the motor 50, the internal energy is converted into electric energy through the motor 50, and the electric energy is stored in the energy recovery module 40, and thus, the energy recovery is realized. When the compressor 30 is started next time, the compressor 30 is started through the electric energy stored in the energy recovery module 40, so that the effects of energy conservation and emission reduction are achieved. In the embodiment of the present invention, the internal energy of the condensing agent can be recycled, the internal energy of the condensing agent is converted into the electric energy stored in the energy recovery module 40, and the start of the compressor 30 is realized. Meanwhile, the reverse rotation of the motor 50 can also make the pressure of the air inlet and the air outlet of the compressor 30 reach balance rapidly, so that when the compressor 30 is restarted rapidly, the pressure difference between the air inlet and the air outlet of the compressor 30 is reduced, which is beneficial to the rapid restart of the compressor 30. The embodiment of the invention can realize energy recovery, energy conservation and emission reduction.
Referring to fig. 9, the present invention provides an energy-saving start control device 10 for a compressor 30, which includes a first control module and a second control module.
A first control module: the motor 50 for controlling the compressor 30 is reversely rotated to convert the internal refrigerant energy of the compressor 30 into electric energy and store the electric energy through the energy recovery module 40 in a stopped state of the compressor 30.
Optionally, in an embodiment of the present invention, the step S100 is executed by a first control module.
A second control module: when the compressor 30 is started, the energy recovery module 40 is controlled to start the compressor 30.
Optionally, in the embodiment of the present invention, the step S200 is executed by a second control module.
The second control module is also used for acquiring the current voltage of the energy recovery module 40; and if the current voltage of the energy recovery module 40 is less than the set voltage, controlling the compressor 30 to be powered by the commercial power.
Optionally, in the embodiment of the present invention, the above steps S300 and S400 are executed by a second control module.
The energy-saving start control device 10 of the compressor 30 according to the embodiment of the present invention: after the compressor 30 obtains a shutdown instruction, the motor 50 is controlled to rotate reversely, so that the internal energy of the condensing agent of the compressor 30 applies work to the motor 50, the internal energy is converted into electric energy through the motor 50, and the electric energy is stored in the energy recovery module 40, and thus, the energy recovery is realized. When the compressor 30 is started next time, the compressor 30 is started through the electric energy stored in the energy recovery module 40, so that the effects of energy conservation and emission reduction are achieved. In the embodiment of the present invention, the internal energy of the condensing agent can be recycled, the internal energy of the condensing agent is converted into the electric energy stored in the energy recovery module 40, and the start of the compressor 30 is realized. Meanwhile, the reverse rotation of the motor 50 can also make the pressure of the air inlet and the air outlet of the compressor 30 reach balance rapidly, so that when the compressor 30 is restarted rapidly, the pressure difference between the air inlet and the air outlet of the compressor 30 is reduced, which is beneficial to the rapid restart of the compressor 30. The embodiment of the invention can realize energy recovery, energy conservation and emission reduction.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. 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). It should also be noted that, 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. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing 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 according to the embodiments of the present invention. And the aforementioned storage medium includes: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. An energy-saving starting control method of a compressor is used for an air conditioner, and the air conditioner is characterized by comprising the compressor and an energy recovery module, wherein the energy recovery module is electrically connected with a motor of the compressor, and the control method comprises the following steps:
when the compressor is in a shutdown state, controlling a motor of the compressor to rotate reversely so as to convert the internal energy of the condensing agent of the compressor into electric energy, and storing the electric energy through the energy recovery module;
and when the compressor is started, controlling the energy recovery module to start the compressor.
2. The energy saving start control method of a compressor according to claim 1, wherein the step of controlling the energy recovery module to start the compressor at the time of the start of the compressor comprises:
acquiring a starting instruction of the compressor;
and controlling the energy recovery module to start the compressor.
3. The energy saving start control method of a compressor according to claim 2, wherein the step of controlling the energy recovery module to start the compressor at the time of the start of the compressor is performed before the step of controlling the energy recovery module to start the compressor, further comprising:
and charging the energy recovery module by using commercial power.
4. The energy-saving start-up control method of a compressor according to claim 2, wherein the compressor is connected to a commercial power through a PFC;
the step of controlling the energy recovery module to start the compressor includes:
controlling the PFC to disconnect the PFC from the mains.
5. The energy saving start control method of a compressor according to claim 1, wherein after the step of controlling the energy recovery module to start the compressor, the control method further comprises: acquiring the current voltage of the energy recovery module;
judging whether the current voltage of the energy recovery module is less than or equal to a preset voltage or not;
and if the current voltage of the energy recovery module is less than the set voltage, controlling the compressor to supply power through the commercial power.
6. The energy-saving start-up control method of a compressor according to claim 5, wherein the compressor is connected to a commercial power through a PFC;
if the current voltage of the energy recovery module is less than the set voltage, the step of controlling the compressor to supply power through the commercial power comprises the following steps:
and controlling the PFC to be started so as to electrically connect the compressor with the mains supply and supply power to the compressor through the mains supply.
7. The energy-saving starting control method of the compressor according to any one of claims 1 to 6, wherein the energy recovery module comprises a super capacitor or a lithium battery, and the super capacitor or the lithium battery is connected in parallel to a direct current bus of the compressor.
8. An energy-saving start control device of a compressor for an air conditioner, the air conditioner is characterized by comprising the compressor and an energy recovery module, the energy recovery module is electrically connected with a motor of the compressor, and the control device comprises:
a first control module: the energy recovery module is used for controlling the motor of the compressor to rotate reversely when the compressor is in a stop state so as to convert the internal energy of the condensing agent of the compressor into electric energy and store the electric energy through the energy recovery module;
a second control module: and the energy recovery module is used for controlling the energy recovery module to start the compressor when the compressor is started.
9. The energy-saving starting device for the compressor is used for an air conditioner and is characterized by comprising the compressor, a frequency converter, a PFC (power factor correction) and an energy recovery module, wherein a motor of the compressor is electrically connected with the frequency converter, the frequency converter is electrically connected with the PFC through a direct current bus, the PFC is connected with a mains supply, and the energy recovery module is connected to the direct current bus in parallel.
10. An air conditioner, characterized by comprising a controller, a compressor and an energy recovery module, wherein the compressor is electrically connected with the controller, the energy recovery module is electrically connected with a motor of the compressor, the controller stores an energy-saving starting control program of the compressor which can be operated, and the control program is read and operated to realize the control method according to any one of claims 1-7.
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| CN202110469887.9A CN113028580A (en) | 2021-04-28 | 2021-04-28 | Energy-saving starting control method and device for compressor, energy-saving starting device and air conditioner |
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| CN202110469887.9A CN113028580A (en) | 2021-04-28 | 2021-04-28 | Energy-saving starting control method and device for compressor, energy-saving starting device and air conditioner |
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| JP2007024389A (en) * | 2005-07-15 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Controller for air conditioner |
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| CN205232076U (en) * | 2015-12-04 | 2016-05-11 | 重庆美的通用制冷设备有限公司 | Air conditioning system and centrifugal unit and variable frequency control device thereof |
| CN109595146A (en) * | 2018-11-01 | 2019-04-09 | 海信容声(广东)冰箱有限公司 | Compressor control device and method |
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2021
- 2021-04-28 CN CN202110469887.9A patent/CN113028580A/en not_active Withdrawn
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|---|---|---|---|---|
| JP2007024389A (en) * | 2005-07-15 | 2007-02-01 | Matsushita Electric Ind Co Ltd | Controller for air conditioner |
| CN104734311A (en) * | 2013-12-20 | 2015-06-24 | 珠海格力电器股份有限公司 | Compressor function control circuit and control method and centrifugal water chilling unit |
| CN104832411A (en) * | 2015-04-07 | 2015-08-12 | 上海理工大学 | Method and energy storage and release device for restarting compressor by using energy stored during shutdown of compressor |
| CN205232076U (en) * | 2015-12-04 | 2016-05-11 | 重庆美的通用制冷设备有限公司 | Air conditioning system and centrifugal unit and variable frequency control device thereof |
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