CN214665074U - Air conditioner control system and air conditioner - Google Patents
Air conditioner control system and air conditioner Download PDFInfo
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- CN214665074U CN214665074U CN202022329621.8U CN202022329621U CN214665074U CN 214665074 U CN214665074 U CN 214665074U CN 202022329621 U CN202022329621 U CN 202022329621U CN 214665074 U CN214665074 U CN 214665074U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 239000003507 refrigerant Substances 0.000 claims description 54
- 238000010438 heat treatment Methods 0.000 claims description 46
- 238000010257 thawing Methods 0.000 claims description 30
- 230000011664 signaling Effects 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005485 electric heating Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 6
- 230000008054 signal transmission Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The application discloses air conditioner control system and air conditioner, the system includes the control by temperature change unit, outdoor unit control unit, indoor set control unit and signal control unit, signal control unit's first input and second input are connected compressor control signal's transmission path, signal control unit's first output is connected the transmission path of first electricity auxiliary heat control signal, signal control unit's second output is connected indoor unit control unit's high wind control end, signal control unit third output is connected indoor unit control unit's low wind control end, signal control unit's third input is connected outdoor unit control unit's first control end, signal control unit's fourth input is connected outdoor unit control unit's second control end to the realization is according to the running state of the indoor fan of compressor running frequency control, and then reduce indoor motor consumption, promote the complete machine efficiency.
Description
Technical Field
The present application relates to the field of air conditioner control, and more particularly, to an air conditioner control system and an air conditioner.
Background
At present, indoor units of air conditioning systems in North America regions can be matched with outdoor units of different brands, commonly called replacement machines, and the systems mainly comprise temperature controllers, the outdoor units and the indoor units. The system is characterized in that a temperature controller adopts an open communication protocol, the temperature controller sends signals for starting a compressor and switching a four-way valve to an outdoor unit, and the outdoor unit controls an outdoor fan, the compressor and the four-way valve to operate; the temperature controller sends electric auxiliary heating starting and fan starting signals to the indoor unit, and the indoor unit automatically controls the indoor fan and the electric auxiliary heating operation; a common control system and control method for the replacement machine are shown in fig. 2.
The control system is characterized in that when the outdoor unit enters a defrosting state, a compressor running signal is collected and controlled to inform and control the fan and the electric auxiliary heating running of the indoor unit; the control mode during defrosting aims at the types of electric auxiliary heat and non-electric auxiliary heat; the electric auxiliary heating type indoor unit is provided, the relay K3 is controlled to be closed by the outdoor unit during defrosting through a short circuit X10 control end, the coil of the relay K1 is electrified to be closed at the time, electric auxiliary heating is started, and a fan of the indoor unit runs in high wind; for the non-electric auxiliary heating indoor unit, the outdoor unit controls the relay K3 to be closed during defrosting, the coil of the relay K1 is electrified and closed at the moment, and the indoor unit fan stops running; and in the defrosting mode, a defrosting state signal does not need to be sent to the indoor unit, and the fan of the indoor unit runs in high wind.
The control system has the problem that when the outdoor unit is of a variable-frequency type and the set temperature of the temperature controller is close to the ambient temperature, the running frequency of the compressor of the outdoor unit is very low, the requirement of the system capacity can be met by the low-wind running of the fan of the indoor unit at the moment, but in the practical situation, the fan of the indoor unit always runs at high wind, the energy consumption is very high, and the energy waste is caused.
Therefore, how to provide an air conditioner control system can control the running state of an indoor fan according to the running frequency of a compressor, so that the power consumption of an indoor motor is reduced, and the energy efficiency of the whole machine is improved is a technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The application provides an air conditioner control system, which aims to solve the problem that the air conditioner replacement machine control system in the prior art can not control the running state of an indoor unit fan according to the running frequency of an outdoor unit compressor, and comprises a temperature control unit, an outdoor unit control unit, an indoor unit control unit and a signal control unit, wherein,
the temperature control unit is used for sending a compressor control signal and a four-way valve control signal to the outdoor unit control unit, sending a first high-wind control signal to the indoor unit control unit, or sending the first high-wind control signal and a first electric auxiliary heat control signal to the indoor unit control unit;
the outdoor unit control unit is used for controlling the compressor according to the compressor control signal and controlling the four-way valve according to the four-way valve control signal; the indoor unit is also used for sending a second high wind control signal and a second electric auxiliary heat control signal to the indoor unit control unit through the signal control unit, or controlling the signal control unit to disconnect the first high wind control signal, or controlling the signal control unit to convert the first high wind control signal into a low wind control signal;
the indoor unit control unit is used for enabling an indoor fan to operate at a first preset air speed according to the first high-air control signal or the second high-air control signal, enabling the indoor fan to operate at a second preset air speed according to the low-air control signal, and starting an electric auxiliary heating function according to the first electric auxiliary heating control signal or the second electric auxiliary heating control signal when the electric auxiliary heating function exists;
the first input end and the second input end of the signal control unit are connected with a transmission channel of a compressor control signal, the first output end of the signal control unit is connected with the transmission channel of a first electric auxiliary heat control signal, the second output end of the signal control unit is connected with a high wind control end of the indoor unit control unit, the third output end of the signal control unit is connected with a low wind control end of the indoor unit control unit, the third input end of the signal control unit is connected with the first control end of the outdoor unit control unit, the fourth input end of the signal control unit is connected with the second control end of the outdoor unit control unit, and the fifth input end of the signal control unit is connected with the temperature control unit.
In some embodiments, the signal control unit further comprises: a first relay, a second relay, a third relay, a fourth relay and a line controller, wherein,
the first end of the coil of the first relay and the second end of the wire controller are connected to the first end of the switch of the third relay, the second end of the coil of the first relay and the first end of the coil of the second relay are connected to the common end, the third end of the switch of the first relay and the first end of the wire controller are connected to the first output end of the signal control unit, the first end of the switch of the first relay and the first end of the switch of the second relay are connected, the second end of the switch of the first relay is the fifth input end of the signal control unit, the second end of the switch of the second relay is the second output end of the signal control unit, the second end of the coil of the second relay is connected to the first end of the switch of the fourth relay, and the third end of the switch of the second relay is the third output end of the signal control unit, the first end of the coil of the third relay and the first end of the coil of the fourth relay are connected to a 12V direct-current power supply in a sharing mode, the second end of the coil of the third relay is a fourth input end of the signal control unit, the second end of the switch of the third relay is a first input end of the signal control unit, the second end of the coil of the fourth relay is a third input end of the signal control unit, and the second end of the switch of the fourth relay is a second input end of the signal control unit.
In some embodiments, the compressor is embodied as an inverter compressor.
In some embodiments, if the air conditioner has the electric auxiliary heating function, the second high air control signal and the second electric auxiliary heating control signal are sent by the outdoor unit control unit when the air conditioner is in a defrosting mode.
In some embodiments, if the air conditioner has the electric auxiliary heating function, the wire controller is in a short-circuit state when the air conditioner is in a defrosting mode.
In some embodiments, if the air conditioner does not have the electric auxiliary heating function, the outdoor unit control unit turns off the first high wind control signal in a defrosting mode of the air conditioner.
In some embodiments, if the air conditioner does not have the electric auxiliary heating function or is not turned on, and is not in a defrosting mode, and the frequency of the compressor is less than a preset threshold, the outdoor unit control unit controls the signal control unit to convert the first high wind control signal into a low wind control signal.
In some embodiments, the power terminals of the temperature control unit, the outdoor unit control unit and the indoor unit control unit are all connected with a 24V alternating current power supply.
Correspondingly, this application has still provided an air conditioner, includes as above air conditioner control system, still includes:
a refrigerant loop, which enables the refrigerant to circulate in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
and the indoor coil temperature sensor is used for detecting the temperature of the indoor coil.
The application discloses air conditioner control system and air conditioner, the system includes the control by temperature change unit, outdoor unit control unit, indoor set control unit and signal control unit, signal control unit's first input and second input are connected compressor control signal's transmission path, signal control unit's first output is connected the transmission path of first electricity auxiliary heat control signal, signal control unit's second output is connected indoor unit control unit's high wind control end, signal control unit third output is connected indoor unit control unit's low wind control end, signal control unit's third input is connected outdoor unit control unit's first control end, signal control unit's fourth input is connected outdoor unit control unit's second control end to the realization is according to the running state of the indoor fan of compressor running frequency control, and then reduce indoor motor consumption, promote the complete machine efficiency.
Drawings
Fig. 1 is a circuit diagram showing an outline of a structure of an air conditioner of the embodiment;
fig. 2 is a schematic view showing a configuration of a control system commonly used in a replacement machine for an air conditioner in the related art;
fig. 3 is a schematic diagram showing a structure of an air conditioner control system in an embodiment of the present application.
Description of the reference symbols
1: an air conditioner; 2: an outdoor unit; 3: an indoor unit; 10: a refrigerant circuit; 11: a compressor; 12: a four-way valve; 13: an outdoor heat exchanger; 14: an expansion valve; 16: an indoor heat exchanger; 21: an outdoor fan; 31: an indoor fan; 32: an indoor ambient temperature sensor; 33: an indoor coil temperature sensor; 100: a temperature control unit; 200: an outdoor unit control unit; 300: an indoor unit control unit; 400: a signal control unit.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are 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 one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
Fig. 1 shows a circuit configuration of an air conditioner 1, and the air conditioner 1 includes a refrigerant circuit 10, and is capable of executing a vapor compression refrigeration cycle by circulating a refrigerant in the refrigerant circuit 10. The indoor unit 3 and the outdoor unit 2 are connected by a connecting pipe 4 to form a refrigerant circuit 10 in which a refrigerant circulates. The refrigerant circuit 10 includes a compressor 11, an outdoor heat exchanger 13, an expansion valve 14, an accumulator 15, and an indoor heat exchanger 16. Among them, the indoor heat exchanger 16 and the outdoor heat exchanger 13 operate as a condenser or an evaporator. The compressor 11 sucks the refrigerant from the suction port, and discharges the refrigerant compressed therein to the indoor heat exchanger 16 from the discharge port. The compressor 11 is an inverter compressor with variable capacity that performs rotational speed control by an inverter, and the four-way valve 12 switches between heating and cooling.
The outdoor heat exchanger 13 has a first inlet and a second outlet for allowing the refrigerant to flow between the refrigerant and the suction port of the compressor 11 through the accumulator 15, and the refrigerant flows between the refrigerant and the expansion valve 14. The outdoor heat exchanger 13 exchanges heat between the outdoor air and the refrigerant flowing through a heat transfer pipe (not shown) connected between the second inlet and the first inlet of the outdoor heat exchanger 13.
The expansion valve 14 is disposed between the outdoor heat exchanger 13 and the indoor heat exchanger 16. The expansion valve 14 has a function of expanding and decompressing the refrigerant flowing between the outdoor heat exchanger 13 and the indoor heat exchanger 16. The expansion valve 14 is configured to be capable of changing the opening degree, and by decreasing the opening degree, the flow path resistance of the refrigerant passing through the expansion valve 14 is increased, and by increasing the opening degree, the flow path resistance of the refrigerant passing through the expansion valve 14 is decreased. The expansion valve 14 expands and decompresses the refrigerant flowing from the indoor heat exchanger 16 to the outdoor heat exchanger 13 during the heating operation. Further, even if the states of other devices installed in the refrigerant circuit 10 do not change, when the opening degree of the expansion valve 14 changes, the flow rate of the refrigerant flowing in the refrigerant circuit 10 changes.
The indoor heat exchanger 16 has a second inlet and outlet for allowing the liquid refrigerant to flow between the expansion valve 14 and the indoor heat exchanger, and has a first inlet and outlet for allowing the gas refrigerant to flow between the compressor 11 and the discharge port. The indoor heat exchanger 16 exchanges heat between the refrigerant flowing through the heat transfer pipe connected between the second inlet and the first inlet and the second outlet of the indoor heat exchanger 16 and the indoor air.
An accumulator 15 is disposed between the outdoor heat exchanger 13 and the suction port of the compressor 11. In the accumulator 15, the refrigerant flowing from the outdoor heat exchanger 13 to the compressor 11 is separated into a gas refrigerant and a liquid refrigerant. Then, the gas refrigerant is mainly supplied from the accumulator 15 to the suction port of the compressor 11.
The outdoor unit 2 further includes an outdoor fan 21, and the outdoor fan 21 generates an airflow of outdoor air passing through the outdoor heat exchanger 13 to promote heat exchange between the refrigerant flowing through the heat transfer tubes and the outdoor air. The outdoor fan 21 is driven by an outdoor fan motor 21A capable of changing the rotation speed. The indoor unit 3 further includes an indoor fan 31, and the indoor fan 31 generates an airflow of the indoor air passing through the indoor heat exchanger 16 to promote heat exchange between the refrigerant flowing through the heat transfer tubes and the indoor air. The indoor fan 31 is driven by an indoor fan motor 31A whose rotation speed can be changed.
As described in the background art, the control system of the replacement air conditioner in the prior art cannot control the operation state of the indoor fan according to the operation frequency of the compressor of the outdoor unit, so that the indoor fan always runs in high wind, the energy consumption is very high, and the energy waste is caused. In order to solve the above problems, the present application provides an air conditioner control system, as shown in fig. 3, which includes a temperature control unit 100, an outdoor unit control unit 200, an indoor unit control unit 300, and a signal control unit 400, wherein,
the temperature control unit 100 is configured to send a compressor control signal and a four-way valve control signal to the outdoor unit control unit 200, and send a first high-wind control signal to the indoor unit control unit 300, or send the first high-wind control signal and a first electric auxiliary heat control signal to the indoor unit control unit 300;
the outdoor unit control unit 200 is configured to control the compressor according to the compressor control signal and control the four-way valve according to the four-way valve control signal; the indoor unit control unit 300 is further configured to send a second high air control signal and a second electric auxiliary heat control signal to the indoor unit control unit 400, or control the signal control unit 400 to disconnect the first high air control signal, or control the signal control unit 400 to convert the first high air control signal into a low air control signal;
the indoor unit control unit 300 is configured to operate an indoor fan at a first preset wind speed according to the first high wind control signal or the second high wind control signal, operate the indoor fan at a second preset wind speed according to the low wind control signal, and turn on an electric auxiliary heating function according to the first electric auxiliary heating control signal or the second electric auxiliary heating control signal when the electric auxiliary heating function exists;
the first input end and the second input end of the signal control unit 400 are connected with the transmission channel of the compressor control signal, the first output end of the signal control unit 400 is connected with the transmission channel of the first electric auxiliary heat control signal, the second output end of the signal control unit 400 is connected with the high wind control end of the indoor unit control unit 300, the third output end of the signal control unit 400 is connected with the low wind control end of the indoor unit control unit 300, the third input end of the signal control unit 400 is connected with the first control end of the outdoor unit control unit 200, the fourth input end of the signal control unit 400 is connected with the second control end of the outdoor unit control unit 200, and the fifth input end of the signal control unit 400 is connected with the temperature control unit 100.
The first preset wind speed of the indoor fan is larger than the second preset wind speed, namely the first preset wind speed is a high wind speed, and the second preset wind speed is a low wind speed.
The first input terminal and the second input terminal of the signal control unit 400 are connected to a transmission path of the compressor control signal, and provide an ac signal for the signal control unit to output a control signal to the indoor unit control unit 300.
When the outdoor unit control unit 200 enters the defrosting mode, the ac signal is collected through the first input terminal of the second control terminal control signal control unit 400, and the second electric auxiliary heat control signal and the second high wind control signal are respectively output through the first output terminal and the second output terminal.
In a preferred embodiment of the present application, if the air conditioner has the electric auxiliary heating function, the second high air control signal and the second electric auxiliary heating control signal are issued by the outdoor unit control unit 200 when the air conditioner is in the defrosting mode.
Specifically, the first high wind control signal and the first electric auxiliary heat control signal sent by the temperature control unit 100 are sent according to the set mode and temperature of the air conditioner, and are used for controlling the indoor unit control unit 300 to normally operate according to the set mode and temperature. The second high wind control signal and the second electric auxiliary heat control signal sent by the outdoor unit control unit 200 through the signal control unit 400 are control signals sent by the outdoor unit control unit 200 in the defrosting mode to control the indoor fan and the electric auxiliary heat function to operate normally in the defrosting mode and maintain the indoor temperature during defrosting.
The low wind control signal is converted from the first high wind control signal by the outdoor unit control unit 200 controlling the signal control unit 400, and is independently controlled from the second high wind control signal and the second electric auxiliary heat control signal generated in the defrosting mode of the air conditioner without affecting each other.
It should be noted that, due to the safety requirement, when the electric auxiliary heating function is started, the indoor fan must operate at a high wind speed to prevent the danger caused by the overhigh temperature of the air conditioner; when the electric auxiliary heat is not needed, the temperature control unit 100 will turn off the first electric auxiliary heat control signal.
In a preferred embodiment of the present application, if the air conditioner does not have the electric auxiliary heating function, the outdoor unit control unit 200 turns off the first high wind control signal in a defrosting mode of the air conditioner.
Specifically, if the air conditioner does not have the electric auxiliary heating function, the indoor unit does not have an electric auxiliary heating assembly, and the outdoor unit control unit 200 needs to disconnect the first high-wind control signal sent by the temperature control unit through the signal control unit 400 in the defrosting mode, so as to ensure that cold wind generated by the indoor unit in the defrosting mode is not blown out, and avoid affecting user experience.
In a preferred embodiment of the present application, if the air conditioner does not have the electric auxiliary heating function or is not turned on, and is not in the defrosting mode, and the frequency of the compressor is less than a preset threshold, the outdoor unit control unit 200 controls the signal control unit 400 to convert the first high air control signal into the low air control signal.
Specifically, when the air conditioner does not have the electric auxiliary heating function or is not started and operates in the non-defrosting mode, the outdoor unit control unit 200 may control the indoor fan according to the operation frequency of the compressor, if the operation frequency of the compressor is less than the preset threshold, it is indicated that the compressor operates at the low frequency, the outdoor unit control unit 200 collects an alternating current signal through the second input end of the first control end control signal control unit 400, converts the first high wind control signal into a low wind control signal, and outputs the low wind control signal through the third output end, so that the indoor fan operates at the low wind speed, thereby achieving the energy saving effect.
In order to achieve the energy saving effect of the air conditioner, in a preferred embodiment of the present application, the compressor is specifically an inverter compressor.
When the set temperature of the temperature control unit is close to the ambient temperature, the running frequency of the variable frequency compressor is reduced, and the indoor fan is controlled to run in low wind by the low wind control signal at the moment so as to realize the energy-saving effect of the air conditioner.
In order to ensure the transmission of the ac signal, in the preferred embodiment of the present application, the power terminals of the temperature control unit 100, the outdoor unit control unit 200, and the indoor unit control unit 300 are all connected to a 24V ac power supply.
The application adopts the open communication protocol, uses 24V communication system that exchanges, and signal control unit 400 is through gathering compressor control signal to obtain 24V alternating current signal, and be used for outputting second electricity with this alternating current signal and assist thermal control signal and second high wind control signal, realize finally that indoor fan high wind operation and electricity assist the heat function under the heat model defrosting mode of electricity and open.
In order to ensure that the signal control unit 400 can achieve the corresponding control effect, in a preferred embodiment of the present application, the signal control unit 400 further includes: a first relay K1, a second relay K2, a third relay K3, a fourth relay K4 and a line controller X10, wherein,
a first end of a coil of the first relay K1 and a second end of the coil of the line controller X10 are commonly connected to a first end of a switch of the third relay K3, a second end of the coil of the first relay K1 and a first end of a coil of the second relay K2 are commonly connected to a common end, a third end of a switch of the first relay K1 and a first end of the line controller X10 are commonly connected to a first output end of the signal control unit 400, a first end of a switch of the first relay K1 and a first end of a switch of the second relay K2 are connected, a second end of a switch of the first relay K1 is a fifth input end of the signal control unit 400, a second end of a switch of the second relay K2 is a second output end of the signal control unit 400, a second end of a coil of the second relay K2 is connected to a first end of a switch of the fourth relay K4, the third end of the switch of the second relay K2 is the third output end of the signal control unit 400, the first end of the coil of the third relay K3 and the first end of the coil of the fourth relay K4 are connected to the 12V dc power supply in common, the second end of the coil of the third relay K3 is the fourth input end of the signal control unit 400, the second end of the switch of the third relay K3 is the first input end of the signal control unit 400, the second end of the coil of the fourth relay K4 is the third input end of the signal control unit 400, and the second end of the switch of the fourth relay K4 is the second input end of the signal control unit 400.
In the preferred embodiment of the present application, if the air conditioner has the electric auxiliary heating function, the line controller X10 is in a short circuit state when the air conditioner is in the defrosting mode.
Specifically, the first control terminal and the second control terminal of the outdoor unit control unit 200 respectively energize the coil of the fourth relay K4 and the coil of the third relay K3, so that the second input terminal and the first input terminal of the signal control unit 400 can collect the compressor control signal as the second high wind control signal and the second electric auxiliary heat control signal.
When the air conditioner with the electric auxiliary heating function starts a defrosting mode, the line controller X10 is in a short-circuit state,
the outdoor unit control unit 200 controls the coil of the third relay K3 to be energized, the coil of the fourth relay K4 to be de-energized, and the first end and the second end of the switch of the third relay K3 to be closed; at the moment, the coil of the first relay K1 is electrified, and the first end and the third end of the switch of the first relay K1 are closed; the second high wind control signal and the second electric auxiliary heat control signal are electrified through the wire controller X10 and are respectively output from the first output end and the second output end, so that the electric auxiliary heat function is started, and the indoor fan runs in high wind.
When the air conditioner without the electric auxiliary heating function starts a defrosting mode, the line controller X10 is in a broken state, the outdoor unit control unit 200 controls the coil of the third relay K3 to be electrified, the coil of the fourth relay K4 is not electrified, and the first end and the second end of the switch of the third relay K3 are closed; at the moment, the coil of the first relay K1 is electrified, and the first end and the third end of the switch of the first relay K1 are closed; because the line controller X10 is in the open circuit state, has disconnected first high wind control signal, realizes that the indoor fan shuts down under the air conditioner defrosting mode of no electric auxiliary heating function.
When the air conditioner with the electric auxiliary heating function is in a non-defrosting mode and the electric auxiliary heating function is started, the line controller X10 is in an open circuit state, the outdoor unit control unit 200 controls the coils of the fourth relay K4 and the third relay K3 not to be electrified, the coils of the first relay K1 and the second relay K2 are not electrified, and the switches of the first relay K1 and the second relay K2 are both closed at a first end and a second end; at this time, the air inlet and electric auxiliary heating functions of the indoor fan are controlled by the first high-wind control signal and the second high-wind control signal output by the temperature control unit 100.
When the air conditioner without the electric auxiliary heating function or the electric auxiliary heating function is in a non-defrosting mode, the running frequency of the compressor is lower than a preset threshold value, and the air conditioner is in low-frequency running, the line controller X10 is in a circuit-breaking state, the outdoor unit control unit 200 controls the coil of the third relay K3 to be not electrified, the coil of the fourth relay K4 is electrified, and the first end and the second end of the switch of the fourth relay K4 are closed; energization of the coil of the second relay K2, switching of the switch of the second relay K2 to close the first end and the third end, and keeping of the switch of the first relay K1 to close the first end and the second end; at the moment, the indoor fan is controlled by converting the first high-wind control signal into the low-wind control signal, and finally when the running frequency of the compressor is low, the indoor fan is controlled to run in low wind, so that the power consumption is reduced, and the energy efficiency is improved.
The application discloses air conditioner control system and air conditioner, the system includes the control by temperature change unit, outdoor unit control unit, indoor unit control unit and signal control unit, and signal control unit's first input and second input are connected compressor control signal's transmission path, the transmission path of first electricity auxiliary heat control signal is connected to signal control unit's first output, signal control unit's second output is connected the transmission path of first high wind control signal, signal control unit third output is connected indoor unit control unit's low wind control end, signal control unit's third input is connected outdoor unit control unit's first control end, signal control unit's fourth input is connected outdoor unit control unit's second control end to the realization is according to the running state of the indoor fan of compressor running frequency control, and then reduce indoor motor consumption, promote the complete machine efficiency.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. An air conditioner control system is characterized in that the system comprises a temperature control unit, an outdoor unit control unit, an indoor unit control unit and a signal control unit, wherein,
the temperature control unit is used for sending a compressor control signal and a four-way valve control signal to the outdoor unit control unit, sending a first high-wind control signal to the indoor unit control unit, or sending the first high-wind control signal and a first electric auxiliary heat control signal to the indoor unit control unit;
the outdoor unit control unit is used for controlling the compressor according to the compressor control signal and controlling the four-way valve according to the four-way valve control signal; the indoor unit is also used for sending a second high wind control signal and a second electric auxiliary heat control signal to the indoor unit control unit through the signal control unit, or controlling the signal control unit to disconnect the first high wind control signal, or controlling the signal control unit to convert the first high wind control signal into a low wind control signal;
the indoor unit control unit is used for enabling an indoor fan to operate at a first preset air speed according to the first high-air control signal or the second high-air control signal, enabling the indoor fan to operate at a second preset air speed according to the low-air control signal, and starting an electric auxiliary heating function according to the first electric auxiliary heating control signal or the second electric auxiliary heating control signal when the electric auxiliary heating function exists;
the first input end and the second input end of the signal control unit are connected with a transmission channel of a compressor control signal, the first output end of the signal control unit is connected with the transmission channel of a first electric auxiliary heat control signal, the second output end of the signal control unit is connected with a high wind control end of the indoor unit control unit, the third output end of the signal control unit is connected with a low wind control end of the indoor unit control unit, the third input end of the signal control unit is connected with the first control end of the outdoor unit control unit, the fourth input end of the signal control unit is connected with the second control end of the outdoor unit control unit, and the fifth input end of the signal control unit is connected with the temperature control unit.
2. The system of claim 1, wherein the signal control unit further comprises: a first relay, a second relay, a third relay, a fourth relay and a line controller, wherein,
the first end of the coil of the first relay and the second end of the wire controller are connected to the first end of the switch of the third relay, the second end of the coil of the first relay and the first end of the coil of the second relay are connected to the common end, the third end of the switch of the first relay and the first end of the wire controller are connected to the first output end of the signal control unit, the first end of the switch of the first relay and the first end of the switch of the second relay are connected, the second end of the switch of the first relay is the fifth input end of the signal control unit, the second end of the switch of the second relay is the second output end of the signal control unit, the second end of the coil of the second relay is connected to the first end of the switch of the fourth relay, and the third end of the switch of the second relay is the third output end of the signal control unit, the first end of the coil of the third relay and the first end of the coil of the fourth relay are connected to a 12V direct-current power supply in a sharing mode, the second end of the coil of the third relay is a fourth input end of the signal control unit, the second end of the switch of the third relay is a first input end of the signal control unit, the second end of the coil of the fourth relay is a third input end of the signal control unit, and the second end of the switch of the fourth relay is a second input end of the signal control unit.
3. The system according to claim 1, wherein the compressor is embodied as an inverter compressor.
4. The system of claim 3, wherein if the air conditioner has the electric auxiliary heating function, the second high wind control signal and the second electric auxiliary heating control signal are issued by the outdoor unit control unit when the air conditioner is in a defrosting mode.
5. The system of claim 2, wherein if the air conditioner has the electric auxiliary heating function, the line controller is in a short-circuit state when the air conditioner is in a defrosting mode.
6. The system of claim 3, wherein the outdoor unit control unit turns off the first high wind control signal in a defrost mode of the air conditioner if the air conditioner does not have the electric supplementary heat function.
7. The system as claimed in claim 3, wherein if the air conditioner does not have the electric heating assist function or is not turned on, and is not in a defrost mode, and the frequency of the compressor is less than a preset threshold, the outdoor unit control unit controls the signal control unit to convert the first high wind control signal into a low wind control signal.
8. The system of claim 1, wherein the power terminals of the temperature control unit, the outdoor unit control unit and the indoor unit control unit are all connected to a 24V AC power supply.
9. An air conditioner characterized by comprising the air conditioner control system according to any one of claims 1 to 8, further comprising:
a refrigerant loop, which enables the refrigerant to circulate in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
an outdoor heat exchanger and an indoor heat exchanger, wherein one of the heat exchangers operates as a condenser and the other operates as an evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
and the indoor coil temperature sensor is used for detecting the temperature of the indoor coil.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115247863A (en) * | 2022-08-15 | 2022-10-28 | 海信空调有限公司 | Air conditioner and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115247863A (en) * | 2022-08-15 | 2022-10-28 | 海信空调有限公司 | Air conditioner and control method thereof |
| CN115247863B (en) * | 2022-08-15 | 2023-10-31 | 海信空调有限公司 | Air conditioner and control method thereof |
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Address after: No.1 Haixin Road, Nancun Town, Pingdu City, Qingdao City, Shandong Province Patentee after: Hisense Air Conditioning Co.,Ltd. Country or region after: China Address before: No. 151, Zhuzhou Road, Laoshan District, Qingdao, Shandong Patentee before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. Country or region before: China |