Air conditioning unit and air conditioning system

Abstract

The utility model provides an air conditioning unit and an air conditioning system. The air conditioning unit comprises an air conditioner body, a main power supply circuit, a standby power supply, a relay and a control device. The main power supply circuit comprises a power supply protector used for being connected with commercial power. The power supply protector is provided with a fault output unit used for generating fault signals in the commercial power fault state. The standby power supply comprises a discharging unit used for supplying power to the air conditioner body and a charging unit used for being charged from the mains supply, and the charging unit is electrically connected with a relay coil of the relay. The input end of the control device is electrically connected with the fault output unit and a relay switch of the relay, and the control device is configured to respond to a fault signal of the fault output unit and a trigger signal of the relay switch, generate a first signal used for controlling the discharge unit to be connected on the logic unit and output the first signal through the control output unit. According to the utility model, the problem that the power-off restart function of the air conditioning unit is triggered by misjudgment of a fault instruction sent by the power supply protector is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioning unit technical field, in particular to air conditioning unit and air conditioning system. BACKGROUND

[0002] On some air conditioning units, the power-off automatic restart function is an important means to ensure the normal operation of the air conditioning unit. At present, the triggering of the power-off automatic restart function mainly depends on the power protector connected to the mains, that is, in response to the fault instruction issued by the power protector, the power-off automatic restart function is started based on the UPS power supply. However, the fault instruction of the power protector has a high false alarm rate. For example, in the case of phase loss, phase break, voltage overload, voltage underload and other situations, the power protector will also issue a fault instruction, thereby causing the air conditioning unit to restart due to misjudgment, which is inconvenient for users, and also wastes electricity and easily causes air conditioning unit operation failure. SUMMARY

[0003] In view of the above problems, the utility model is proposed to provide an air conditioning unit and an air conditioning system that overcome the above problems or at least partially solve the above problems.

[0004] An object of the present application is to solve the problem of misjudgment triggering of the air conditioning unit power-off restart function from the fault instruction issued by the power protector, so as to improve the response accuracy of the air conditioning unit power-off restart function.

[0005] Specifically, the utility model provides an air conditioning unit, comprising:

[0006] An air conditioner main body;

[0007] A main power supply circuit for connecting the air conditioner main body to the mains, the main power supply circuit comprising a power protector for connecting to the mains, the power protector having a fault output unit for generating a fault signal in the event of a mains fault;

[0008] A backup power supply comprising a discharge unit for supplying power to the air conditioner main body and a charging unit for charging from the mains, the charging unit being electrically connected to the relay coil of a relay;

[0009] A control device having an input end electrically connected to the fault output unit and the relay switch of the relay, the control device further comprising a logic unit for performing a logic AND gate operation with the fault signal of the fault output unit and the trigger signal of the relay switch as input signals, and a control output unit for outputting the operation result of the logic unit; and

[0010] In response to the fault signal of the fault output unit and the trigger signal of the relay switch, a first signal for controlling the discharging unit to be turned on is generated on the logic unit and outputted through the control output unit.

[0011] Optionally, the control device further comprises a discharging control unit for controlling the on-off state of the discharging unit, the discharging control unit and the control output unit are electrically coupled together, so as to cause the discharging control unit to control the discharging unit to be turned on in response to the first signal.

[0012] Optionally, the backup power supply further comprises a UPS power module, an input end of the UPS power module serves as the charging unit of the backup power supply, and / or an output end of the UPS power module serves as the discharging unit of the backup power supply.

[0013] Optionally, the relay switch is a normally open contact switch, the relay switch is used to be turned off when the commercial power is turned on, and the off signal of the relay switch serves as the trigger signal.

[0014] Optionally, the charging unit of the backup power supply comprises a charging live wire for being electrically coupled to a live wire of the commercial power, a charging ground wire for being grounded, and a charging zero wire for being electrically coupled to a zero wire of the commercial power, the relay coil has a first end electrically coupled to the charging live wire and a second end electrically coupled to the charging zero wire.

[0015] Optionally, the control device is further configured to:

[0016] In response to the pending signal of the fault output unit and the untriggered signal of the relay switch, a second signal for controlling the commercial power to supply power to the air conditioner main body is generated on the logic unit and outputted through the control output unit.

[0017] Optionally, the relay switch is a normally open contact switch, the relay switch is used to be turned off when the commercial power is turned on, and the off signal of the relay switch serves as the trigger signal.

[0018] Optionally, the control device is further configured to:

[0019] In response to the pending signal of the fault output unit and the untriggered signal of the relay switch, or the fault signal of the fault output unit and the untriggered signal of the relay switch, the second signal for controlling the commercial power to supply power to the air conditioner main body is generated on the logic unit and outputted through the control output unit.

[0020] Optionally, the fault output unit comprises a normally open contact and a common contact, which are electrically connected to an input of the control device to cause the normally open contact to open when the commercial power is off, and the opening signal of the normally open contact is taken as the fault signal.

[0021] According to another aspect of the present application, there is also provided an air conditioning system comprising the air conditioning unit according to any one of the preceding aspects.

[0022] In the air conditioning unit and the air conditioning system, the relay is electrically connected to the charging unit of the backup power supply, and the state of the contact of the relay and the state of the power protector are used to determine the power supply state of the air conditioning unit. Specifically, when the commercial power is normal, the air conditioning unit operates normally through the main power supply circuit. After the control device receives the fault signal of the power protector and the trigger signal of the relay, the logic unit performs a logical AND operation on the two signals. If the conditions are met, that is, the fault signal and the trigger signal exist at the same time, the control output unit generates a first signal, which can determine that the air conditioning unit is disconnected from the commercial power supply and meets the restart condition. The first signal is output to the discharging unit through the control output unit. The discharging unit starts to supply power to the air conditioning main body. The air conditioning main body can continue to operate under the power supply of the backup power supply or normally shut down according to the preset program. When the control device only receives the fault signal of the power protector or the trigger signal of the relay, the control device can determine that the air conditioning unit is not disconnected from the commercial power supply and does not meet the restart condition. Therefore, compared with the prior art, the air conditioning unit of the embodiment can accurately determine whether the air conditioning unit meets the power-off restart condition, avoids the air conditioning unit restarting due to misjudgment, saves the power cost, improves the response accuracy of the power-off restart function of the air conditioning unit, and improves the operation stability of the air conditioning unit.

[0023] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] Some embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings. Identical reference signs in the drawings indicate identical or similar components or parts. It will be appreciated that the drawings are not necessarily to scale. In the drawings:

[0025] Figure 1 is a schematic circuit diagram of a main power supply circuit according to an embodiment of the present application;

[0026] Figure 2 is a schematic circuit wiring diagram of a backup power supply according to an embodiment of the present application;

[0027] Figure 3 This is a schematic circuit wiring diagram of a control device according to an embodiment of the present invention. Detailed Implementation

[0028] The following reference Figures 1 to 3 This description describes an air conditioning unit and air conditioning system according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0029] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] In the description of the embodiments, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0032] Figure 1 is a schematic circuit diagram of the main power supply circuit 100 according to an embodiment of the present application, as shown in Figure 1 , and referring to Figures 2 to 3 , the embodiment of the present application provides an air conditioning unit, which comprises an air conditioning main body, a main power supply circuit 100, a backup power supply 200, a relay 300 and a control device 400.

[0033] The main power supply circuit 100 is used to connect the air conditioning main body to the mains, and the main power supply circuit 100 comprises a power supply protector 110 for connecting to the mains, and the power supply protector 110 has a fault output unit for generating a fault signal in a mains fault state. The backup power supply 200 comprises a discharging unit 220 for supplying power to the air conditioning main body, and a charging unit 210 for charging from the mains, and the charging unit 210 is electrically connected to the relay coil 310 of the relay 300. The input end of the control device 400 is electrically connected to the fault output unit and the relay switch 320 of the relay 300, and the control device 400 further comprises a logic unit for performing a logic AND gate operation with the fault signal of the fault output unit and the trigger signal of the relay switch 320 as input signals, and a control output unit for outputting the operation result of the logic unit.

[0034] The control device 400 can be configured to generate a first signal for controlling the discharging unit 220 to be turned on on the logic unit in response to the fault signal of the fault output unit and the trigger signal of the relay switch 320, and output through the control output unit.

[0035] In the embodiment, the air conditioning main body can utilize the physical properties of the refrigerant to transfer the heat in the room to the outdoor through a series of heat exchange processes, thereby reducing the indoor temperature. At the same time, the air conditioning main body can also have the functions of adjusting humidity, ventilation and air purification, so as to provide a comfortable indoor environment.

[0036] The main power supply circuit 100 is responsible for connecting the mains to the air conditioner main body and providing stable power supply. Among them, the power protector 110 plays a key protection role. When the mains fails, the power protector 110 can quickly detect the failure and generate a fault signal, so that the subsequent control device 400 takes appropriate measures.

[0037] The standby power supply 200 includes a discharge unit 220 and a charging unit 210. When the mains is normal, the charging unit 210 obtains power from the mains and charges the discharge unit 220 for future use. When the mains fails, the discharge unit 220 releases the stored electrical energy to the air conditioner main body, ensuring that the air conditioner unit can continue to operate for a period of time, or shut down normally according to the preset program, to avoid sudden power failure causing damage to the equipment and users.

[0038] The relay 300 is an electrical control element that uses electromagnetic effect to realize the on-off control of the circuit. In the air conditioner unit, the relay 300 is used to control the charging and discharging of the standby power supply 200 and the start and stop of the air conditioner main body. When receiving the corresponding control signal, the relay 300 will act, changing the state of its contact, thereby realizing the control of the circuit.

[0039] The control device 400 is one of the core components of the air conditioner unit, which is responsible for receiving various input signals (such as fault signals, trigger signals, etc.), and after logical operation, outputting the corresponding control signal. The control device 400 includes a logic unit and a control output unit. The logic unit receives the signals of the fault output unit and the signals of the relay 300, and performs logical AND operation. According to the operation result, the logic unit will generate the corresponding control signal. The control output unit is responsible for outputting the control signal generated by the logic unit to the corresponding actuator (such as the discharge unit 220, the mains power supply circuit, etc.), to realize the control of the air conditioner unit.

[0040] In the embodiment, since the relay 300 is electrically connected to the charging unit 210 of the backup power supply 200, the state of the contacts of the relay 300 and the state of the power protector 110 can be used to determine the power supply state of the air conditioning unit. Specifically, when the mains power is normal, the air conditioning unit operates normally through the main power supply circuit 100. When the control device 400 receives the fault signal of the power protector 110 and the trigger signal of the relay 300, the logic unit performs a logical AND operation on the two signals. If the conditions are met (i.e., the fault signal and the trigger signal exist at the same time), the control output unit generates a first signal, which can determine that the air conditioning unit is disconnected from the mains power supply (mains power failure) and meets the restart condition. The first signal is output to the discharging unit 220 through the control output unit; the discharging unit 220 starts to supply power to the air conditioning main body; the air conditioning main body can continue to operate under the power supply of the backup power supply 200 or normally shut down according to the preset program. When the control device 400 only receives the fault signal of the power protector 110 or the trigger signal of the relay 300, the control device 400 can determine that the air conditioning unit is not disconnected from the mains power supply and does not meet the restart condition. Therefore, compared with the prior art, the air conditioning unit of the embodiment can accurately determine whether the air conditioning unit meets the power-off restart condition, avoid the air conditioning unit restarting due to misjudgment, save the power cost, and improve the operation stability of the air conditioning unit.

[0041] In some embodiments of the utility model, the control device 400 further includes a discharging control unit for controlling the on-off state of the discharging unit 220, and the discharging control unit and the control output unit are electrically coupled together to enable the discharging control unit to control the discharging unit 220 to be turned on in response to the first signal.

[0042] Specifically, when the mains power is normal, the main power supply circuit 100 connects the mains power to the air conditioning main body to supply power thereto; the discharging control unit does not control the discharging unit 220 to be turned on, because the backup power supply 200 does not need to supply power at this time.

[0043] When the air conditioning unit is disconnected from the mains power supply, the power protector 110 detects the fault and activates the fault output unit to generate a fault signal; at the same time, the relay 300 is triggered due to the mains power failure; the input end of the control device 400 receives the fault signal and the trigger signal of the relay 300, and the logic unit performs a logical AND operation on the two signals. If the above two signals exist at the same time, a first signal is generated; the first signal is sent to the discharging control unit through the control output unit; the discharging control unit controls the discharging unit 220 to be turned on in response to the first signal, thereby providing power to the air conditioning main body. In the embodiment, by adding the discharging control unit, the control device 400 can more accurately control the on-off state of the discharging unit 220, thereby providing reliable power guarantee when the mains power fails.

[0044] As Figure 2As shown, in some embodiments of the present application, the backup power supply 200 further comprises a UPS power module, the input end of the UPS power module serving as the charging unit 210 of the backup power supply 200, and / or the output end of the UPS power module serving as the discharging unit 220 of the backup power supply 200.

[0045] In this embodiment, the full name of UPS in English is Uninterruptible Power Supply, and the Chinese name is Uninterruptible Power Supply. It is a power supply system containing energy storage device (commonly known as battery) and inverter, mainly used to provide stable and uninterrupted power supply for electronic equipment when the mains power is off or power fluctuation.

[0046] The UPS power module as the backup power supply 200 has many advantages, which can ensure the normal operation of the air conditioning unit in the case of power failure, and maintain the safety of the air conditioning unit; it can also ensure that the air conditioning unit has enough time to shut down in the case of sudden power failure, thereby avoiding data loss or damage and protecting data security. In addition, the UPS power module usually has high energy efficiency, which can reduce energy consumption and reduce operating costs. The UPS power module is usually equipped with intelligent monitoring and management functions, which can monitor the power supply state, battery state and other key parameters in real time, and provide alarm and diagnosis functions for easy maintenance and management.

[0047] In alternative embodiments of the present application, the backup power supply 200 can also be an alternating current inverter emergency power supply (EPS) or a dedicated feeder, etc. The dedicated feeder is equipped with an automatic input device and is effectively independent of the normal power supply.

[0048] In some embodiments of the present application, the relay switch 320 is a normally open contact switch, and the relay switch 320 is used to be disconnected when the mains power is off, and the disconnection signal of the relay switch is used as the trigger signal.

[0049] Specifically, the normally open contact switch is in an open state when the coil is not powered, and does not conduct electricity. When the relay 300 coil is powered, the contact will close, allowing current to pass through. The normally open contact switch realizes the automatic disconnection function when the mains power is off, protecting the load device from damage or danger. In alternative embodiments, the relay switch 320 can also be a normally closed contact switch. Compared with the normally closed contact switch, the normally open contact switch is widely used in electrical hardware design and PLC program design due to its easy understanding and implementation. Specifically, the design of the normally open contact switch makes it easier for maintenance personnel to identify the state and fault point of the circuit. When repairing or replacing the relay switch 320, only the closing or opening of the contact needs to be concerned, without the need for complex circuit analysis.

[0050] As Figure 2As shown, in some embodiments of the utility model, the charging unit 210 of the backup power supply 200 includes a charging live wire 211 for electrically coupling to the live wire of the mains, a charging ground wire 212 for grounding, and a charging zero wire 213 for electrically coupling to the zero wire of the mains, and the relay coil 310 has a first end electrically coupled to the charging live wire 211 and a second end electrically coupled to the charging zero wire 213.

[0051] In this embodiment, in the case of normal power supply of the mains, the backup power supply 200 has no current output and is in a charging state, at which time the charging live wire 211, the charging zero wire 213 and the charging ground wire 212 jointly ensure the safety and stability of the charging process. Among them, the charging live wire 211 is connected with the live wire of the mains to provide the backup power supply 200 with the required electric energy for charging; the charging zero wire 213 is connected with the zero wire of the mains to form a current loop; and the charging ground wire 212 ensures the safety of the entire charging process and prevents potential safety hazards such as electric leakage. When the mains is disconnected, the backup power supply 200 can automatically switch to the power supply state. In the charging unit 210 of the backup power supply 200, the first end of the relay coil 310 is electrically coupled to the charging live wire 211 and the second end is electrically coupled to the charging zero wire 213. When the charging unit 210 is working, the current flows into the relay coil 310 through the charging live wire 211 and the charging zero wire 213, generates an electromagnetic effect, and thus controls the contact switch state of the relay 300. The charging unit 210 of the backup power supply 200 in this embodiment adopts the design of combining the charging live wire 211, the charging ground wire 212, the charging zero wire 213 and the relay coil 310, which provides the backup power supply 200 with a stable, safe and reliable charging mechanism.

[0052] In some embodiments of the utility model, the control device 400 is further configured to generate a second signal for controlling the mains to supply power to the air conditioner main body on the logic unit in response to the suspension signal of the fault output unit and the non-triggering signal of the relay switch 320, and output the second signal through the control output unit.

[0053] Specifically, when the control unit receives the suspension signal of the fault output unit and the non-triggering signal of the electric switch, the logic unit generates a second signal, the control output unit outputs the second signal, and the mains supplies power to the air conditioner main body. The suspension signal of the fault output unit indicates that the mains has no fault, and the non-triggering signal of the electric switch indicates that the backup power supply 200 is charging. That is, when the control unit does not receive the fault signal of the fault output unit and the triggering signal of the relay switch 320, it is judged that the mains is not disconnected, and the mains supplies power to the air conditioner main body. This embodiment has the advantages of simple control logic and easy operation.

[0054] In some embodiments of the present utility model, the relay switch 320 is a normally open contact switch, and the relay switch 320 is used to close when the mains is connected, and the closing signal of the relay switch is used as the non-triggering signal. That is to say, when the mains is normally connected, the relay switch does not generate a triggering signal.

[0055] In this embodiment, the normally open contact switch is open in the initial state and only closes under certain conditions (such as mains connection). This design can prevent the circuit from being triggered in unauthorized or accidental situations, improving the safety of the system. The normally open contact switch has stable contact resistance and low failure rate when closed, which helps to ensure the stable operation of the circuit. In contrast, the normally closed contact switch may have poor contact or sticking problems after long-term use, which affects the stability of the circuit. In addition, by using the closing signal of the relay switch as the non-triggering signal, real-time monitoring and management of the air conditioning unit power supply state can be achieved. When the air conditioning unit power supply fails or is abnormal, the problem can be quickly located and appropriate measures can be taken.

[0056] In some embodiments of the present utility model, the control device 400 is also configured to: in response to the suspension signal of the fault output unit and the triggering signal of the relay switch 320, or the fault signal of the fault output unit and the non-triggering signal of the relay switch 320, generate a second signal for controlling the mains to supply power to the air conditioning main body on the logic unit, and output through the control output unit.

[0057] In this embodiment, if the fault output unit outputs the suspension signal and the relay switch 320 is triggered, or the fault output unit outputs the fault signal and the relay switch 320 is not triggered, it cannot be determined as the mains off state, and it can be determined as other mains faults except the mains off. The logic unit also generates the second signal to ensure that the mains continues to supply power to the air conditioning main body. Then, when the fault output unit outputs the suspension signal and the relay switch 320 is not triggered, the control device 400 starts the fault reset function.

[0058] In some embodiments of the present utility model, when the control device 400 receives the fault signal of the power protector 110 and the triggering signal of the relay 300, the control device 400 controls the standby power supply 200 to supply power. Then, when the fault output unit outputs the suspension signal and the relay switch 320 is not triggered, and the control device 400 enables the power-off self-reset fast start function.

[0059] In some embodiments of the present utility model, the fault output unit includes a normally open contact and a common contact, and the normally open contact and the common contact are electrically connected to the input end of the control device 400 to cause the normally open contact to open when the mains is powered off, and the opening signal of the normally open contact is used as the fault signal.

[0060] Specifically, as Figure 1As shown, NO on the power protector 110 is the abbreviation of "Normally Open", which represents "normally open end", i.e. "normally open contact". In the absence of power activation, the NO end is in an open state. COM is the abbreviation of "Common", which represents "common end", i.e. "common contact". In the power protector 110, the COM end is usually used to connect the fire line of the power line as the common potential reference point in the circuit.

[0061] In the embodiment, when the mains power is off, the normally open contact is disconnected, and a clear disconnection signal is generated. This signal can be directly recognized by the control device 400 as a fault signal, thereby accurately indicating the condition of the mains power failure. In addition, directly connecting the normally open contact and the common contact to the input end of the control device 400 can ensure the rapid transmission and processing of the fault signal. In summary, the design of the embodiment is simple and easy to understand, and is very effective, which can ensure timely alarm in the event of mains power failure.

[0062] In some embodiments of the utility model, as shown in Figure 1 Figure 1 R, S, T, N represent different wires respectively. R represents A phase line, S represents B phase line, T represents C phase line, and N represents zero line. The power supply system of the main power supply circuit 100 is composed of three fire lines and one zero line. As shown in Figure 2 The relay 300 is arranged at the input power of the UPS power module. As shown in Figure 3 The input end of the control device 400 includes a first input end 410, a second input end 420 and a third input end 430. The first input end 410 is electrically connected with the relay switch 320 of the relay 300, the second input end 420 is electrically connected with the normally open contact of the fault output unit, and the third input end 430 is electrically connected with the common contact of the fault output unit.

[0063] The embodiment of the utility model further provides an air conditioning system, which comprises the air conditioning unit as described in any one of the above embodiments.

[0064] At this point, those skilled in the art should realize that although the plurality of exemplary embodiments of the utility model have been shown and described in detail herein, many other variants or modifications conforming to the principles of the utility model can still be directly determined or deduced according to the content disclosed by the utility model without departing from the spirit and scope of the utility model. Therefore, the scope of the utility model should be understood and recognized as covering all these other variants or modifications.​

Claims

1. An air conditioning unit, characterized in that, include: Air conditioner main body; A main power supply circuit for connecting the air conditioner unit to the mains power supply, the main power supply circuit including a power protector for connecting to the mains power supply, the power protector having a fault output unit for generating a fault signal in the event of a mains power failure; The backup power supply includes a discharge unit for supplying power to the air conditioner unit and a charging unit for charging from the mains power, wherein the charging unit is energized and connected to the relay coil of a relay. A control device, the input of which is electrically connected to the fault output unit and the relay switch of the relay, further includes a logic unit for performing a logical AND gate operation with the fault signal of the fault output unit and the trigger signal of the relay switch as input signals, and a control output unit for outputting the operation result of the logic unit; and, In response to the fault signal from the fault output unit and the trigger signal from the relay switch, a first signal for controlling the discharge unit to be turned on is generated on the logic unit and output through the control output unit.

2. The air conditioning unit according to claim 1, characterized in that, The control device further includes a discharge control unit for controlling the on / off state of the discharge unit. The discharge control unit and the control output unit are electrically coupled together to cause the discharge control unit to control the discharge unit to turn on in response to the first signal.

3. The air conditioning unit according to claim 1, characterized in that, The backup power supply also includes a UPS power module, the input terminal of which serves as the charging unit of the backup power supply, and / or the output terminal of which serves as the discharging unit of the backup power supply.

4. The air conditioning unit according to claim 1, characterized in that, The relay switch is a normally open contact switch, which is used to disconnect when the mains power is cut off, and the disconnection signal of the relay switch is used as the trigger signal.

5. The air conditioning unit according to claim 1, characterized in that, The charging unit of the backup power supply includes a charging live wire for being electrically coupled to the mains live wire, a charging ground wire for being grounded, and a charging neutral wire for being electrically coupled to the mains neutral wire. The relay coil has a first end electrically coupled to the charging live wire and a second end electrically coupled to the charging neutral wire.

6. The air conditioning unit according to claim 1, characterized in that, The control device is also configured to: In response to the floating signal of the fault output unit and the non-triggered signal of the relay switch, a second signal for controlling the mains power to supply power to the air conditioner body is generated on the logic unit and output through the control output unit.

7. The air conditioning unit according to claim 6, characterized in that, The relay switch is a normally open contact switch, which is used to close when the mains power is turned on, and the closing signal of the relay switch is used as the untriggered signal.

8. The air conditioning unit according to claim 6, characterized in that, The control device is also configured to: In response to the floating signal of the fault output unit and the trigger signal of the relay switch, or the fault signal of the fault output unit and the non-triggered signal of the relay switch, a second signal for controlling the mains power to supply power to the air conditioner body is generated on the logic unit and output through the control output unit.

9. The air conditioning unit according to claim 1, characterized in that, The fault output unit includes a normally open contact and a common contact. The normally open contact and the common contact are electrically connected to the input terminal of the control device to cause the normally open contact to open when the mains power is cut off, and the opening signal of the normally open contact is used as the fault signal.

10. An air conditioning system, characterized in that, Including the air conditioning unit as described in claims 1 to 9 above.

Images