CN111306746A - Indoor unit, air conditioning system, control method, and computer-readable storage medium - Google Patents
Indoor unit, air conditioning system, control method, and computer-readable storage medium Download PDFInfo
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- CN111306746A CN111306746A CN202010134061.2A CN202010134061A CN111306746A CN 111306746 A CN111306746 A CN 111306746A CN 202010134061 A CN202010134061 A CN 202010134061A CN 111306746 A CN111306746 A CN 111306746A
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- indoor unit
- valve body
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Air Conditioning Control Device (AREA)
Abstract
The invention provides an indoor unit, an air conditioning system, a control method and a computer readable storage medium. Wherein, the indoor set is connected with indoor set power and off-premises station respectively, and the indoor set includes: a valve body configured to control a flow rate of a refrigerant flowing into the indoor unit by opening or closing; a control device connected with the valve body, the control device being configured to control the valve body; the battery device is connected with the valve body and is configured to supply power to the valve body based on the power failure of the internal machine power supply; and the indoor unit communication bus is respectively connected with the outdoor unit and the battery device and is configured to transmit the electric energy of the outdoor unit to the battery device based on the power failure of the indoor unit power supply. The working state of the valve body is matched with the running state of the compressor, so that the problems that the outdoor unit supplies a power line or supplies power to the indoor unit in a coupling mode to supply power to the indoor unit, the power supply current is large, the line loss is large, and the problems that the installation is not facilitated and the potential safety hazard is caused due to the fact that a large standby battery is used are avoided.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an indoor unit, an air conditioning system, a control method of the indoor unit, a control method of the outdoor unit and a computer readable storage medium.
Background
The multi-split air conditioning system comprises an outdoor unit and a plurality of indoor units which are arranged in parallel, and a refrigerant circulates in a connecting pipeline between the indoor units and the outdoor unit. The electronic expansion valve is installed on the connecting pipeline between the indoor unit and the outdoor unit, and the opening of the electronic expansion valve determines the flow rate of the refrigerant flowing into the indoor unit.
The power supply of the indoor unit and the power supply of the outdoor unit are generally supplied separately. Each indoor unit of the multi-split air conditioning system is provided with an independent power supply. According to the use habits of different users, the power supply of the indoor unit can be turned off when the indoor unit is out or not used. Therefore, in the multi-split air conditioning system, when some indoor units are in a closed state and some other indoor units are in an operating state, the electronic expansion valve is connected with the control main board of the indoor units, and after the indoor units are powered off, the control main board cannot control the operating state of the electronic expansion valve any more, so that the operating state of the electronic expansion valve cannot adapt to the operating state of the compressor, and the service life of the compressor is influenced.
The solution in the related art is to solve the problem by controlling the electronic expansion valve of the power-down indoor unit, and other power supplies must be connected to the electronic expansion valve of the power-down indoor unit, and the following methods are available at present:
(1) a public power supply is used for supplying power to the indoor unit;
(2) providing power to the indoor unit from the outdoor unit;
(3) the indoor unit is carried with a standby battery.
The method of using a public power supply to supply power to the indoor unit is easy to suspect electricity stealing.
The outdoor unit is used for providing power for the indoor unit, one power line is provided for the indoor unit from the outdoor unit, the action power consumption of a valve body of the electronic expansion valve is large, the power supply current is large, the line loss is large, the voltage provided by the outdoor unit is high, the high voltage easily causes harm to a human body, if the line loss is controlled, the line diameter needs to be increased, the cost is correspondingly increased, and the wiring difficulty and the wire cost of the system are increased due to the extra power line; the other method is a method for coupling power supply provided by an outdoor unit to an indoor unit through a communication line, so that power supply wiring harnesses can be saved, but the power consumption of the valve body of the electronic expansion valve is high, so that the power supply current is high, and the coupling inductance needs to be very large and cannot be realized.
The spare battery is used, the indoor unit needs to be provided with a battery on an original control panel, the required battery capacity is large in order to meet the action of the electronic expansion valve in unknown time, the controller box of the indoor unit is large, the installation is not facilitated, and various hidden dangers exist in the large battery.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, one aspect of the present invention is to propose an indoor unit.
Another aspect of the present invention is to provide an air conditioning system.
Still another aspect of the present invention is to provide a method of controlling an indoor unit.
Another aspect of the present invention is to provide a method of controlling an outdoor unit.
Yet another aspect of the present invention is to provide a computer-readable storage medium.
In view of the above, according to an aspect of the present invention, an indoor unit is provided, the indoor unit being connected to an indoor unit power supply and an outdoor unit, respectively, the indoor unit including: a valve body configured to control a flow rate of a refrigerant flowing into the indoor unit by opening or closing; a control device connected with the valve body, the control device being configured to control the valve body; the battery device is connected with the valve body and is configured to supply power to the valve body based on the power failure of the internal machine power supply; and the indoor unit communication bus is respectively connected with the outdoor unit and the battery device and is configured to transmit the electric energy of the outdoor unit to the battery device based on the power failure of the indoor unit power supply.
The invention provides an indoor unit, wherein a valve body (such as an electronic expansion valve) is arranged on a connecting pipeline between the indoor unit and an outdoor unit, and a control device controls the opening of the valve body to determine the flow of a refrigerant flowing into the indoor unit. The indoor unit is internally provided with an independent battery device, when the indoor unit is powered off (namely the indoor unit is disconnected with the power supply of the indoor unit), the outdoor unit charges the battery device through the indoor unit communication line, and the fully charged battery device supplies power to the valve body in the power-off state of the indoor unit, so that the control device can control the valve body to act, ensure that the working state of the valve body is adaptive to the running state of the compressor, avoid the problem that the outdoor unit supplies a power line or supplies power to the indoor unit through coupling of the power line, so that the power supply current is large, the line loss is large, and avoid the problem that the installation and the potential safety hazard.
It should be noted that, when the indoor unit is powered off, the outdoor unit may supply power to the control device through the indoor unit communication bus, or the battery device may supply power to the control device.
The indoor unit according to the present invention may further include:
in the technical scheme, the battery device, the control device and the valve body are all connected with the power supply of the internal machine, and the power supply of the internal machine supplies power to the battery device, the control device and the valve body based on the condition that the power supply of the internal machine is not powered off.
In the technical scheme, when the indoor unit is not powered down, the power supply of the indoor unit supplies power to the control device and the valve body so as to ensure that the flow of the refrigerant is efficiently controlled, and meanwhile, the power supply of the indoor unit charges the battery device so as to ensure that the battery device can supply power to the valve body when the indoor unit is powered down, thereby ensuring that the working state of the valve body is adaptive to the running state of the compressor.
In any of the above technical solutions, the method further includes: and the indoor unit communication device is connected with the indoor unit communication bus and is configured to communicate with the outdoor unit by utilizing the indoor unit communication bus.
In the technical scheme, the indoor unit communication device is communicated with the outdoor unit through the indoor unit communication bus, and information such as whether the indoor unit is powered off, the electric quantity of the battery device, the valve body action and the like can be sent to the outdoor unit. When the indoor unit is not powered down, the indoor unit power supply can supply power to the indoor unit communication device, and when the indoor unit is powered down, the outdoor unit can supply power to the indoor unit communication device through the indoor unit communication bus, so that normal communication between the indoor unit and the outdoor unit is ensured.
In any of the above technical solutions, the method further includes: and the conversion device is connected with the internal machine communication bus and is configured to convert the electric energy of the internal machine communication bus.
In the technical scheme, the conversion device is connected with an internal machine communication bus and used for converting electric energy provided by an outdoor machine into electric energy such as rectification, direct current to direct current and the like, so that the battery device is charged.
According to another aspect of the present invention, there is provided an air conditioning system including: an outdoor unit; an indoor unit according to any one of the above-described technical solutions.
The air conditioning system provided by the invention comprises the outdoor unit and the indoor unit adopting the technical scheme, when the indoor unit is powered off, the outdoor unit charges the battery device of the indoor unit, and the fully charged battery device supplies power to the valve body when the indoor unit is powered off, so that the valve body can be controlled to act, the working state of the valve body is ensured to be adapted to the running state of the compressor, the problems that the outdoor unit supplies a power line or supplies power to the indoor unit in a coupling way, so that the power supply current is large, the line loss is large, and the problems that the installation is not facilitated and the potential safety hazard is caused by using a large standby battery are avoided.
The air conditioning system according to the present invention may further include the following features:
in the above technical solution, the method further comprises: the indoor unit power supply is connected with the indoor unit and is configured to supply power to the indoor unit; and/or an outdoor unit power supply connected with the outdoor unit, the outdoor unit power supply being configured to supply power to the outdoor unit.
In the technical scheme, the power supply of the indoor unit and the power supply of the outdoor unit supply power respectively, and the power supplies are independent and do not influence each other.
In any one of the above technical solutions, an outdoor unit includes: and the outer machine communication bus is connected with the inner machine communication bus of the indoor machine.
In the technical scheme, an outdoor unit communication bus of an outdoor unit is connected with an indoor unit communication bus of an indoor unit, and the outdoor unit charges a battery device of the indoor unit through the communication buses (the outdoor unit communication bus and the indoor unit communication bus).
In any one of the above technical solutions, the outdoor unit further includes: and the outer machine communication device is connected with the outer machine communication bus and is configured to communicate with the indoor machine by utilizing the outer machine communication bus.
In the technical scheme, an outdoor unit communication device of the outdoor unit and an indoor unit communication device of the indoor unit are communicated with each other through a communication bus, and the indoor unit can send information such as whether the indoor unit is powered off, the electric quantity of a battery device, valve body action and the like to the outdoor unit so as to ensure normal communication between the indoor unit and the outdoor unit.
According to another aspect of the present invention, a method for controlling an indoor unit is provided, which is applicable to an indoor unit according to any of the above technical solutions, and the method includes: detecting the power failure of the indoor unit, and sending a charging request to the outdoor unit so as to charge the battery device through the indoor unit communication bus; after the charging of the battery device is finished, controlling the battery device to supply power to the valve body; and receiving a control signal for the valve body, and controlling the valve body to act according to the control signal.
The invention provides a control method of an indoor unit, wherein a valve body (such as an electronic expansion valve) of the indoor unit is arranged on a connecting pipeline between the indoor unit and an outdoor unit, and the opening degree of the valve body determines the flow rate of a refrigerant flowing into the indoor unit. An independent battery device is arranged in the indoor unit, when the indoor unit is detected to be powered off (namely the indoor unit is disconnected with an indoor unit power supply), a charging request is sent to the outdoor unit, so that the outdoor unit charges the battery device through an indoor unit communication line, the fully charged battery device supplies power to the valve body in the power-off state of the indoor unit, the valve body is controlled to act, the working state of the valve body is ensured to be matched with the running state of the compressor, the problem that the outdoor unit supplies a power line or supplies power to the indoor unit in a coupling mode to cause large power supply current and large line loss due to the fact that the outdoor unit supplies power to the indoor unit in the communication line is.
It should be noted that, when the indoor unit is powered off, the outdoor unit may supply power to the control device through the indoor unit communication bus, or the battery device may supply power to the control device.
The control method of the indoor unit according to the present invention may further include:
in the above technical solution, the method further comprises: and detecting that the power supply of the internal machine is not powered off, and charging the battery device through the power supply of the internal machine.
In the technical scheme, when the indoor unit is not powered down, the indoor unit power supply supplies power to the valve body so as to ensure that the flow of the refrigerant is efficiently controlled, and meanwhile, the indoor unit power supply charges the battery device so as to ensure that the battery device can supply power to the valve body when the indoor unit is powered down and ensure that the working state of the valve body is adaptive to the running state of the compressor.
In any of the above technical solutions, the method further includes: setting the charging current and the charging time of the battery device, wherein the charging time is longer than the sum of the total action time of the valve body; and/or setting the action interval duration of the valve body, wherein the action interval duration is longer than the duration required by charging.
In the technical scheme, because the actuating current I1 of the valve body is large and the total actuating time length T1 is small, the electric quantity demand of the valve body on the battery device is I1 × T1, the charging current I2 and the charging required time length T2 of the battery device are set, and the energy conservation I1 × T1 is I2 × T2. The standby current I3 of the indoor unit (when the battery device is not charged) is I1> I2> I3, and the coupling inductance volume of the circuit can be small and the power supply distance between the outdoor unit and the indoor unit can be prolonged because T2> T1 and I1> I2 are small in charging current. In addition, the size of the charging current can be set, so that the fluctuation range of the current is small, the specification of the power supply can be reduced, and the efficiency can be improved. When the battery device is charged, the battery devices of other indoor units connected with the outdoor unit are not charged, and although I2 is larger than I3, only one indoor unit is charged at the same time, so the line loss can be reduced. The valve body operation interval time length T3, T3> T2> T1 is set, so the valve body operation control can be performed after the battery device is charged.
In any of the above technical solutions, the charging information includes a time length required for charging.
In the technical scheme, the charging required time is sent to the outdoor unit, so that the outdoor unit charges the battery device according to the charging required time, the outdoor unit does not charge the battery devices of other indoor units within the charging required time, only one indoor unit is charged at the same time, the charging current is ensured to be small, and the line loss can be reduced.
According to another aspect of the present invention, there is provided a method of controlling an outdoor unit connected to a plurality of indoor units, the method including: acquiring power failure information of the indoor units, and charging a battery device of any one of the power failure indoor units; and acquiring the information of the charging completion of the battery device, and sending a control signal to the indoor unit to control the valve body of the indoor unit to act.
According to the control method of the outdoor unit, if one indoor unit is powered off, the battery device of the indoor unit is charged, if a plurality of indoor units are powered off, the battery device of one indoor unit is charged, namely only one indoor unit needs to be charged at the same time, so that the charging current is ensured to be small, and the line loss can be reduced. After the battery device is charged, the battery device can supply power to the valve body of the indoor unit, the outdoor unit sends a control signal to the indoor unit so as to control the valve body to act, the working state of the valve body is ensured to be adaptive to the running state of the compressor, and the situation that the outdoor unit supplies power wires or supplies power coupled to the communication wires to supply power to the indoor unit, so that the supply current is large and the wire loss is large is avoided.
The method for controlling the outdoor unit according to the present invention may further include:
in the above technical solution, the step of charging the battery device of any indoor unit that is powered off specifically includes: acquiring the time length required by charging of the battery device, wherein the time length required by charging is longer than the total action time length of the valve body, and the time length required by charging is shorter than the action interval time length of the valve body; and charging the battery device of any powered-off indoor unit for the required time.
In the technical scheme, the charging required time of the battery device sent by the indoor unit is obtained, so that the outdoor unit charges the battery device according to the charging required time, the outdoor unit does not charge the battery devices of other indoor units within the charging required time, only one indoor unit is charged at the same time, the charging current is ensured to be small, and the line loss can be reduced.
It should be noted that the required charging time period T2 is longer than the total operating time period T1 of the valve body, and since the energy conservation I1 × T1 is I2 × T2 (where I1 represents the operating current of the valve body, and I2 represents the charging current of the battery device), I1> I2, that is, the charging current is small, the coupling inductance volume of the circuit can be made small, and the power supply distance between the outdoor unit and the indoor unit can be extended. The valve body operation interval time length T3, T3> T2> T1 is set, so the valve body operation control can be performed after the battery device is charged.
In any of the above technical solutions, the step of charging the battery device of any indoor unit that is powered off specifically includes: acquiring charging information of a battery device of any one indoor unit which is powered off; and determining that the charging information is that the battery device is not fully charged, and charging the room battery device.
In the technical scheme, because the power supply of the indoor unit can also charge the battery device when the indoor unit is not powered down, the indoor unit can charge the battery device when the battery device is not fully charged, and the battery is prevented from being damaged.
According to still another aspect of the present invention, there is provided a computer-readable storage medium having a computer program stored thereon, the computer program, when executed by a processor, implementing the method for controlling an indoor unit or the method for controlling an outdoor unit according to any one of the above aspects.
The computer-readable storage medium according to the present invention, when being executed by a processor, implements the method for controlling an indoor unit according to any one of the above-described embodiments, or the method for controlling an indoor unit or the method for controlling an outdoor unit according to any one of the above-described embodiments, and therefore, the computer-readable storage medium includes all the advantageous effects of the method for controlling an indoor unit or the method for controlling an outdoor unit according to any one of the above-described embodiments.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows a schematic block diagram of an indoor unit of a first embodiment of the present invention;
figure 2 shows a schematic block diagram of an indoor unit of a second embodiment of the present invention;
FIG. 3 illustrates a topological structure diagram of an air conditioning system in accordance with an embodiment of the present invention;
fig. 4 is a circuit configuration diagram showing a communication power supply apparatus according to an embodiment of the present invention;
fig. 5 is a schematic flow chart showing a control method of an indoor unit according to a first embodiment of the present invention;
fig. 6 is a flow chart showing a control method of an indoor unit according to a second embodiment of the present invention;
fig. 7 is a flowchart illustrating a control method of an indoor unit according to a third embodiment of the present invention;
fig. 8 is a flowchart illustrating a method of controlling an outdoor unit according to a first embodiment of the present invention;
fig. 9 is a flowchart illustrating a method of controlling an outdoor unit according to a second embodiment of the present invention;
fig. 10 is a flowchart illustrating a method of controlling an outdoor unit according to a third embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
In an embodiment of the first aspect of the present invention, an indoor unit is provided, and the indoor unit is connected to an indoor unit power supply and an outdoor unit, respectively.
First embodiment, fig. 1 shows a schematic block diagram of an indoor unit 100 according to a first embodiment of the present invention. Wherein, this indoor set 100 includes:
a valve body 102, the valve body 102 being configured to control a flow rate of the refrigerant flowing into the indoor unit 100 by opening or closing;
a control device 104 connected to the valve body 102, the control device 104 being configured to control the valve body 102;
a battery device 106 connected to the valve body 102, the battery device 106 being configured to supply power to the valve body 102 upon a power outage of the internal combustion engine;
and an indoor unit communication bus 108 respectively connected to the outdoor unit and the battery device 106, wherein the indoor unit communication bus 108 is configured to transmit electric energy of the outdoor unit to the battery device 106 based on power failure of the indoor unit.
In the indoor unit 100 of the present invention, a valve body 102 (e.g., an electronic expansion valve) is installed on a connection pipe between the indoor unit 100 and an outdoor unit, and a control device 104 controls the opening of the valve body 102 to determine the flow rate of a refrigerant flowing into the indoor unit 100. An independent battery device 106 is arranged in the indoor unit 100, when the indoor unit 100 is powered off (namely, the indoor unit 100 is disconnected from an indoor unit power supply), the outdoor unit charges the battery device 106 through an indoor unit communication line, and the fully charged battery device 106 supplies power to the valve body 102 when the indoor unit 100 is powered off, so that the control device 104 can control the valve body 102 to act, the working state of the valve body 102 is ensured to be matched with the running state of the compressor, the problems that the outdoor unit supplies a power line or supplies power to the indoor unit 100 through coupling of the power line and the communication line, so that the power supply current is large, the line loss is large, and the problems that the installation is not facilitated and the potential safety hazard.
It should be noted that, when the indoor unit 100 is powered off, the outdoor unit may supply power to the control device 104 through the indoor unit communication bus 108, or the battery device 106 may supply power to the control device 104.
In the above embodiment, the battery device 106, the control device 104, and the valve body 102 are all connected to an internal power source, and the internal power source supplies power to the battery device 106, the control device 104, and the valve body 102 based on the internal power source not being powered off.
In this embodiment, when the indoor unit 100 is not powered down, the indoor unit power supply supplies power to the control device 104 and the valve body 102 to ensure efficient control of the refrigerant flow, and meanwhile, the indoor unit power supply charges the battery device 106 to ensure that the battery device 106 can supply power to the valve body 102 when the indoor unit 100 is powered down, thereby ensuring that the working state of the valve body 102 is adapted to the running state of the compressor.
Second embodiment, fig. 2 is a schematic block diagram illustrating an indoor unit 100 according to a second embodiment of the present invention. Wherein, this indoor set 100 includes:
a valve body 102, the valve body 102 being configured to control a flow rate of the refrigerant flowing into the indoor unit 100 by opening or closing;
a control device 104 connected to the valve body 102, the control device 104 being configured to control the valve body 102;
a battery device 106 connected to the valve body 102, the battery device 106 being configured to supply power to the valve body 102 upon a power outage of the internal combustion engine;
an indoor unit communication bus 108 connected to the outdoor unit and the battery device 106, respectively, the indoor unit communication bus 108 being configured to transmit electric power of the outdoor unit to the battery device 106 upon power-off of the indoor unit power supply;
an indoor unit communication device 110 connected to the indoor unit communication bus 108, the indoor unit communication device 110 being configured to communicate with an outdoor unit using the indoor unit communication bus 108;
and a conversion device 112 connected to the indoor machine communication bus 108, wherein the conversion device 112 is configured to convert the electric energy of the indoor machine communication bus 108.
In this embodiment, the indoor unit communication device 110 communicates with the outdoor unit through the indoor unit communication bus 108, and can send information such as whether the indoor unit 100 is powered down, the power of the battery device 106, and the operation of the valve body 102 to the outdoor unit. When the indoor unit 100 is not powered off, the indoor unit power supply can supply power to the indoor unit communication device 110, and when the indoor unit 100 is powered off, the outdoor unit can supply power to the indoor unit communication device 110 through the indoor unit communication bus 108, so that normal communication between the indoor unit 100 and the outdoor unit is ensured.
In this embodiment, the conversion device 112 is connected to the indoor unit communication bus 108, and is used for converting the electric energy provided by the outdoor unit into a rectified electric energy, a direct current into a direct current, and the like, so as to charge the battery device 106.
In a second aspect of the present invention, an air conditioning system is provided, and fig. 3 shows a topological structure diagram of the air conditioning system according to an embodiment of the present invention. Wherein, this air conditioning system includes:
an outdoor unit 200;
the indoor unit 100 according to any of the above embodiments;
an indoor unit power supply (not shown) connected to the indoor unit 100, the indoor unit power supply being configured to supply power to the indoor unit 100;
and an outdoor unit power source (not shown) connected to the outdoor unit 200, the outdoor unit power source being configured to supply power to the outdoor unit 200. Wherein, indoor set 100 includes:
a valve body 102, the valve body 102 being configured to control a flow rate of the refrigerant flowing into the indoor unit 100 by opening or closing;
a control device 104 connected to the valve body 102, the control device 104 being configured to control the valve body 102;
a battery device 106 connected to the valve body 102, the battery device 106 being configured to supply power to the valve body 102 upon a power outage of the internal combustion engine;
a communication bus 114 connected to the outdoor unit 200 and the battery device 106, respectively, the communication bus 114 being configured to transmit power of the outdoor unit 200 to the battery device 106 upon power failure of the indoor unit;
the communication power supply device 116 is connected with the communication bus 114, the communication power supply device 116 comprises a conversion module and a communication module, and the communication module converts the electric energy of the communication bus 114 by using the communication bus 114 and the communication conversion module of the outdoor unit 200;
the indoor unit 100 is connected to an indoor unit power supply line 118 through the indoor unit power supply line 118.
The communication bus 114 is shown as a solid line and the internal power line 118 is shown as a dashed line in fig. 3.
The air conditioning system provided by the invention comprises an outdoor unit 200 and the indoor unit 100 of the embodiment, when the indoor unit 100 is powered off, the outdoor unit 200 charges a battery device 106 of the indoor unit 100, and the fully charged battery device 106 supplies power to a valve body 102 (such as an electronic expansion valve) of the indoor unit 100 in the power-off state of the indoor unit 100, so that the valve body 102 can be controlled to act, the working state of the valve body 102 is ensured to be adaptive to the running state of a compressor, the problems that the outdoor unit 200 supplies a power line or supplies power to the indoor unit 100 by coupling the power line, so that the power supply current is large, the line loss is large, and the problems that the installation is not facilitated and the potential safety hazard is caused by.
In this embodiment, when the indoor unit 100 is not powered down, the indoor unit power supply supplies power to the control device 104 and the valve body 102 to ensure efficient control of the refrigerant flow, and meanwhile, the indoor unit power supply charges the battery device 106 to ensure that the battery device 106 can supply power to the valve body 102 when the indoor unit 100 is powered down, thereby ensuring that the working state of the valve body 102 is adapted to the running state of the compressor.
In this embodiment, the communication power supply device 116 communicates with the outdoor unit 200 through the communication bus 114, and can transmit information such as whether the indoor unit 100 is powered off, the amount of power of the battery device 106, and the operation of the valve body 102 to the outdoor unit 200. When the indoor unit 100 is not powered off, the indoor unit power supply can supply power to the communication power supply device 116, and when the indoor unit 100 is powered off, the outdoor unit 200 can supply power to the communication power supply device 116 through the communication bus 114, so that normal communication between the indoor unit 100 and the outdoor unit 200 is ensured.
In this embodiment, the conversion module performs rectification, dc-to-dc conversion, and the like on the electric energy provided by the outdoor unit 200, so as to charge the battery device 106.
In this embodiment, the power supply of the indoor unit 100 and the power supply of the outdoor unit 200 are supplied with power respectively, the power supplies are independent and do not affect each other, and the outdoor unit 200 does not power down when the indoor unit 100 is powered down.
In any of the above embodiments, the circuit structure of the communication power device 116 is as shown in fig. 4, the communication power device is connected to the communication bus 114, the communication power device includes a conversion module composed of a first inductor 1120, a second inductor 1122, a rectifier bridge 1124, a voltage source positive terminal V +, and a voltage source negative terminal V-, and the conversion module may further include a dc-dc module (not shown), and the conversion module performs rectification, dc-dc conversion, and the like on the electric energy provided by the outdoor unit 200, so as to charge the battery device 106. The communication power supply device further includes a communication module composed of a first capacitor 1130, a second capacitor 1132, and a communication transceiver chip 1134, the communication transceiver chip 1134 includes an R end and a D end, the R end and the D end are connected to the control device 104 of the indoor unit 100, and the indoor unit 100 and the outdoor unit 200 communicate with each other through the communication module.
In any of the above embodiments, the outdoor unit 200 also includes a communication power device (not shown) connected to the communication bus 114, and the communication power device of the outdoor unit 200 is configured to communicate with the indoor unit 100 through the communication bus 114.
In this embodiment, the communication power supply device of the outdoor unit 200 and the communication power supply device 116 of the indoor unit 100 communicate with each other through the communication bus 114, and the indoor unit 100 can send information such as whether the indoor unit 100 is powered off, the power of the battery device 106, and the operation of the valve body 102 to the outdoor unit 200, so as to ensure the normal communication between the indoor unit 100 and the outdoor unit 200.
An embodiment of a third aspect of the present invention provides a control method of an indoor unit, which is applied to the indoor unit according to any one of the above embodiments, and the control method of the indoor unit is described in detail with reference to the following embodiments.
First embodiment, fig. 5 is a flowchart illustrating a method for controlling an indoor unit according to a first embodiment of the present invention. The control method of the indoor unit comprises the following steps:
The invention provides a control method of an indoor unit, wherein a valve body (such as an electronic expansion valve) of the indoor unit is arranged on a connecting pipeline between the indoor unit and an outdoor unit, and the opening degree of the valve body determines the flow rate of a refrigerant flowing into the indoor unit. An independent battery device is arranged in the indoor unit, when the indoor unit is detected to be powered off (namely the indoor unit is disconnected with an indoor unit power supply), a charging request is sent to the outdoor unit, so that the outdoor unit charges the battery device through an indoor unit communication line, the fully charged battery device supplies power to the valve body in the power-off state of the indoor unit, the valve body is controlled to act, the working state of the valve body is ensured to be matched with the running state of the compressor, the problem that the outdoor unit supplies a power line or supplies power to the indoor unit in a coupling mode to cause large power supply current and large line loss due to the fact that the outdoor unit supplies power to the indoor unit in the communication line is.
It should be noted that, when the indoor unit is powered off, the outdoor unit may supply power to the control device through the indoor unit communication bus, or the battery device may supply power to the control device.
In any of the above embodiments, further comprising: setting the charging current and the charging time of the battery device, wherein the charging time is longer than the sum of the total action time of the valve body; and/or setting the action interval duration of the valve body, wherein the action interval duration is longer than the duration required by charging.
In this embodiment, since the operating current I1 of the valve body is large and the total operating time period T1 is small, the electric quantity demand of the valve body on the battery device is I1 × T1, the charging current I2 and the charging required time period T2 of the battery device are set, and the energy conservation I1 × T1 is I2 × T2. The standby current I3 of the indoor unit (when the battery device is not charged) is I1> I2> I3, and the coupling inductance volume of the circuit can be small and the power supply distance between the outdoor unit and the indoor unit can be prolonged because T2> T1 and I1> I2 are small in charging current. In addition, the size of the charging current can be set, so that the fluctuation range of the current is small, the specification of the power supply can be reduced, and the efficiency can be improved. When the battery device is charged, the battery devices of other indoor units connected with the outdoor unit are not charged, and although I2 is larger than I3, only one indoor unit is charged at the same time, so the line loss can be reduced. The valve body operation interval time length T3, T3> T2> T1 is set, so the valve body operation control can be performed after the battery device is charged.
In any of the above embodiments, the charging information includes a required charging time period.
In this embodiment, the time length required for charging is sent to the outdoor unit, so that the outdoor unit charges the battery device according to the time length required for charging, and the outdoor unit does not charge the battery devices of other indoor units within the time length required for charging, and only one indoor unit is charged at the same time, so that the charging current is ensured to be small, and the line loss can be reduced.
Second embodiment, fig. 6 is a flowchart illustrating a method for controlling an indoor unit according to a second embodiment of the present invention. The control method of the indoor unit comprises the following steps:
and step 610, charging the battery device through the internal machine power supply.
In the embodiment, when the indoor unit is not powered down, the indoor unit power supply supplies power to the valve body so as to ensure that the flow of the refrigerant is efficiently controlled, and meanwhile, the indoor unit power supply charges the battery device so as to ensure that the battery device can supply power to the valve body when the indoor unit is powered down, so that the working state of the valve body is ensured to be adaptive to the running state of the compressor.
In any of the above embodiments, further comprising: setting the charging current and the charging time of the battery device, wherein the charging time is longer than the sum of the total action time of the valve body; and/or setting the action interval duration of the valve body, wherein the action interval duration is longer than the duration required by charging.
In any of the above embodiments, the charging information includes a required charging time period.
Third embodiment, fig. 7 is a flowchart illustrating a method of controlling an indoor unit according to a third embodiment of the present invention. The control method of the indoor unit comprises the following steps:
in step 716, the charging demand time of the outdoor unit is recovered, and then the process returns to step 702.
An embodiment of a fourth aspect of the present invention provides a method for controlling an outdoor unit, the outdoor unit being connected to a plurality of indoor units, and the method for controlling the outdoor unit will be described in detail with reference to the following embodiments.
First embodiment, fig. 8 is a flowchart illustrating a method for controlling an outdoor unit according to a first embodiment of the present invention. The control method of the outdoor unit comprises the following steps:
and step 804, acquiring information that the charging of the battery device is completed, and sending a control signal to the indoor unit to control the valve body of the indoor unit to act.
According to the control method of the outdoor unit, if one indoor unit is powered off, the battery device of the indoor unit is charged, if a plurality of indoor units are powered off, the battery device of one indoor unit is charged, namely only one indoor unit needs to be charged at the same time, so that the charging current is ensured to be small, and the line loss can be reduced. After the battery device is charged, the battery device can supply power to the valve body of the indoor unit, the outdoor unit sends a control signal to the indoor unit so as to control the valve body to act, the working state of the valve body is ensured to be adaptive to the running state of the compressor, and the situation that the outdoor unit supplies power wires or supplies power coupled to the communication wires to supply power to the indoor unit, so that the supply current is large and the wire loss is large is avoided.
In the above embodiment, in step 802, charging the battery device of any powered-off indoor unit specifically includes: acquiring the time length required by charging of the battery device, wherein the time length required by charging is longer than the total action time length of the valve body, and the time length required by charging is shorter than the action interval time length of the valve body; and charging the battery device of any powered-off indoor unit for the required time.
In this embodiment, the time length required for charging the battery device sent by the indoor unit is obtained, so that the outdoor unit charges the battery device according to the time length required for charging, and the outdoor unit does not charge the battery devices of other indoor units within the time length required for charging.
It should be noted that the required charging time period T2 is longer than the total operating time period T1 of the valve body, and since the energy conservation I1 × T1 is I2 × T2 (where I1 represents the operating current of the valve body, and I2 represents the charging current of the battery device), I1> I2, that is, the charging current is small, the coupling inductance volume of the circuit can be made small, and the power supply distance between the outdoor unit and the indoor unit can be extended. The valve body operation interval time length T3, T3> T2> T1 is set, so the valve body operation control can be performed after the battery device is charged.
In any of the above embodiments, in step 802, charging the battery device of any indoor unit that is powered off specifically includes: acquiring charging information of a battery device of any one indoor unit which is powered off; and determining that the charging information is that the battery device is not fully charged, and charging the room battery device.
In this embodiment, since the power supply of the indoor unit can also charge the battery device when the indoor unit is not powered down, the indoor unit can charge the battery device when the battery device is not fully charged, thereby avoiding damaging the battery.
Second embodiment, fig. 9 is a flowchart illustrating a method for controlling an outdoor unit according to a second embodiment of the present invention. The control method of the outdoor unit comprises the following steps:
and 908, acquiring the information that the charging of the battery device is completed, and sending a control signal to the indoor unit to control the valve body of the indoor unit to act.
Third embodiment, fig. 10 is a flowchart illustrating a method for controlling an outdoor unit according to a third embodiment of the present invention. The control method of the outdoor unit comprises the following steps:
An embodiment of a fifth aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for controlling an indoor unit or the method for controlling an outdoor unit according to any of the above embodiments.
The computer-readable storage medium according to the present invention, when being executed by a processor, implements the method for controlling an indoor unit, or the method for controlling an outdoor unit, according to any of the above embodiments, and therefore, the computer-readable storage medium includes all the advantageous effects of the method for controlling an indoor unit, or the method for controlling an outdoor unit, according to any of the above embodiments.
In the description herein, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly stated or limited otherwise; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. The utility model provides an indoor set, its characterized in that, indoor set is connected with indoor set power and off-premises station respectively, indoor set includes:
a valve body configured to control a flow rate of a refrigerant flowing into the indoor unit by opening or closing;
a control device connected with the valve body, the control device configured to control the valve body;
a battery device connected with the valve body, wherein the battery device is configured to supply power to the valve body based on the power failure of the internal machine power supply;
an indoor unit communication bus respectively connected with the outdoor unit and the battery device, the indoor unit communication bus being configured to transmit electric energy of the outdoor unit to the battery device based on the power failure of the indoor unit power supply.
2. The indoor unit according to claim 1,
the battery device, the control device and the valve body are all connected with the internal machine power supply, and based on the fact that the internal machine power supply is not powered off, the internal machine power supply supplies power to the battery device, the control device and the valve body.
3. The indoor unit according to claim 1 or 2, further comprising:
an indoor unit communication device connected with the indoor unit communication bus, the indoor unit communication device being configured to communicate with the outdoor unit using the indoor unit communication bus.
4. The indoor unit according to claim 1 or 2, further comprising:
the conversion device is connected with the indoor unit communication bus and is configured to convert electric energy of the indoor unit communication bus.
5. An air conditioning system, comprising:
an outdoor unit;
the indoor unit according to any one of claims 1 to 4.
6. The air conditioning system of claim 5, further comprising:
an indoor unit power supply connected to the indoor unit, the indoor unit power supply configured to supply power to the indoor unit; and/or
An outdoor unit power supply connected to the outdoor unit, the outdoor unit power supply configured to supply power to the outdoor unit.
7. The air conditioning system according to claim 5 or 6, wherein the outdoor unit includes:
and the outer machine communication bus is connected with the inner machine communication bus of the indoor machine.
8. The air conditioning system of claim 7, wherein the outdoor unit further comprises:
and the outdoor unit communication device is connected with the outdoor unit communication bus and is configured to communicate with the indoor unit by utilizing the outdoor unit communication bus.
9. A control method of an indoor unit, which is applied to the indoor unit according to any one of claims 1 to 4, the control method comprising:
detecting the power failure of the indoor unit, and sending a charging request to the outdoor unit so as to charge the battery device through the indoor unit communication bus;
after the charging of the battery device is finished, the battery device is controlled to supply power to the valve body;
and receiving a control signal for the valve body, and controlling the valve body to act according to the control signal.
10. The indoor unit control method according to claim 9, further comprising:
and detecting that the power supply of the internal machine is not powered off, and charging the battery device through the power supply of the internal machine.
11. The indoor unit control method according to claim 9, further comprising:
setting the charging current and the charging required time of the battery device, wherein the charging required time is longer than the sum of the total action time of the valve body; and/or
And setting the action interval duration of the valve body, wherein the action interval duration is greater than or equal to the required charging duration.
12. The control method of the indoor unit according to any one of claims 9 to 11,
the charging information includes the length of time required for charging.
13. A control method of an outdoor unit, the outdoor unit being connected to a plurality of indoor units, the control method comprising:
acquiring power failure information of the indoor units, and charging a battery device of any one of the indoor units which is powered off;
and acquiring the information of the charging completion of the battery device, and sending a control signal to the indoor unit to control the valve body of the indoor unit to act.
14. The outdoor unit control method of claim 13, wherein the step of charging the battery device of any one of the indoor units that is powered off includes:
acquiring the time length required by charging of the battery device, wherein the time length required by charging is longer than the total action time length of the valve body, and the time length required by charging is less than or equal to the action interval time length of the valve body;
and charging the battery device of any one of the indoor units which is powered off for the time required by charging.
15. The outdoor unit control method according to claim 13 or 14, wherein the step of charging the battery device of any one of the indoor units that is powered off includes:
acquiring charging information of the battery device of any one of the indoor units which is powered off;
and determining that the charging information is that the battery device is not fully charged, and charging the battery device.
16. A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the control method of the indoor unit according to any one of claims 9 to 12 or the control method of the outdoor unit according to any one of claims 13 to 15.
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| CN202010134061.2A CN111306746A (en) | 2020-03-02 | 2020-03-02 | Indoor unit, air conditioning system, control method, and computer-readable storage medium |
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| CN110207342A (en) * | 2019-06-24 | 2019-09-06 | 广东美的暖通设备有限公司 | Indoor unit, the control circuit of air-conditioner set, control method and readable storage medium storing program for executing |
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| JPS63101649A (en) * | 1986-10-17 | 1988-05-06 | Mitsubishi Electric Corp | Centralized monitoring device for air conditioner |
| CN1967079A (en) * | 2005-11-18 | 2007-05-23 | 乐金电子(天津)电器有限公司 | Combined air conditioner with emergency power supply unit |
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Application publication date: 20200619 |