Air conditioning device

Abstract

The utility model discloses an air conditioning device which comprises an alternating-current power supply interface, a switching power supply, power driving modules, a water pump interface, an alternating-current fault detection module, a direct-current fault detection module and a control module, and the power driving modules comprise an alternating-current water pump power driving module and a direct-current water pump power driving module. The water pump interface comprises an alternating-current water pump interface and a direct-current water pump interface; the direct-current water pump interface is connected with a direct-current water pump; the alternating-current water pump fault detection module is used for detecting faults of an alternating-current water pump and generating fault signals; the direct-current water pump fault detection module is used for detecting faults of the direct-current water pump and generating fault signals; and the control module is used for receiving the fault signal and outputting a control signal to the AC water pump power driving module and / or the DC water pump power driving module. The air conditioning device can be compatible with an alternating-current water pump and a direct-current water pump, compatibility and reliability of circuit design are improved, and after-sales maintenance difficulty and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning devices, in particular to an air-conditioning device capable of being compatible with an AC water pump and a DC water pump. Background Art

[0002] During the cooling operation of the air conditioner, a large amount of condensed water will be generated, especially in a high temperature and high humidity environment. Existing air conditioners generally receive and discharge the condensed water through a water receiving pan. If the condensed water is not discharged in time, there will be a problem of water leakage.

[0003] In the current commercial air conditioning industry, since the indoor unit is an embedded air conditioner, a large amount of condensed water will be generated after the air conditioner starts working. Therefore, there must be a water tray and a drainage pump under the evaporator of the indoor unit. The drainage pump discharges the condensed water in the water tray. The drainage pump itself has the function of a check valve to ensure that the condensed water in the pipe will not flow back. When the condensed water accumulates to a certain extent, the drainage pump motor is triggered to work and the condensed water is discharged. It is more flexible than the indoor unit without a drainage pump, which drains water by gravity. Thereby, it can avoid the leakage of the indoor unit caused by the untimely removal of condensed water.

[0004] At present, the drainage pump of the indoor unit of the commercial air-conditioning industry is generally equipped with an AC water pump or a DC water pump. The air-conditioning device with an AC water pump is equipped with a drive circuit designed for the AC water pump, and the air-conditioning device with a DC water pump is equipped with a drive circuit designed for the DC water pump. This method has a relatively high design cost, poor versatility, and inconvenient after-sales maintenance.

[0005] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] The utility model provides an air conditioning device, which solves the technical problems of poor versatility and inconvenient after-sales maintenance caused by the condensate water drainage device of the existing air conditioning device being designed with only a DC water pump or only involving an AC water pump.

[0007] In order to achieve the above-mentioned utility model purpose, the utility model adopts the following technical solutions:

[0008] An air conditioning device, comprising: an AC power interface, a switching power supply, a power drive module and a water pump interface,

[0009] The power drive module includes an AC water pump power drive module and a DC water pump power drive module;

[0010] The water pump interface includes an AC water pump interface and a DC water pump interface;

[0011] The air conditioning device comprises:

[0012] An AC water pump fault detection module, used to detect the fault of the AC water pump and generate a fault signal;

[0013] A DC water pump fault detection module, used to detect a fault of the DC water pump and generate a fault signal;

[0014] A control module is used to receive the fault signal and output a control signal to the AC water pump power drive module and / or the DC water pump power drive module.

[0015] In some embodiments of the present application, the air-conditioning device includes a float switch, which is used to output a forced start control signal to the AC water pump power drive module, the DC water pump power drive module and the control module, and the forced start control signal is used to control the operation of the AC water pump power drive module and the DC water pump power drive module.

[0016] In some embodiments of the present application, a first unidirectional flow circuit is provided between the float switch and the DC water pump power drive module, and the first unidirectional flow circuit is used to prevent the control signal output by the control module from being output to the output circuit of the float switch.

[0017] In some embodiments of the present application, the control signal unidirectional flow circuit includes a first diode arranged between the float switch output circuit and the DC water pump power drive module, the positive pole of the first diode is connected to the float switch output circuit, and the negative pole of the first diode is connected to the DC water pump power drive module and the control signal output circuit of the control module.

[0018] In some embodiments of the present application, a second unidirectional flow circuit is provided between the control signal output circuit of the control module and the DC water pump power drive module, and the second unidirectional flow circuit is used to prevent the forced start control signal output by the float switch from being output to the control signal output circuit of the control module.

[0019] In some embodiments of the present application, the second unidirectional flow circuit includes a second diode arranged between the control signal output circuit of the control module and the DC water pump power drive module, the positive pole of the second diode is connected to the control signal output circuit of the control module, and the negative pole of the second diode is connected to the DC water pump power drive module and the float switch output circuit.

[0020] In some embodiments of the present application, the AC water pump power drive module includes a drive circuit and a switch circuit, the drive circuit controls the conduction and disconnection of the switch circuit, when the switch circuit is turned on, the AC water pump interface is powered, when the switch circuit is disconnected, the AC water pump interface loses power.

[0021] In some embodiments of the present application, the float switch is used to output a forced start control signal to the switch circuit. When the float switch outputs the forced start control signal, the switch circuit is turned on. When the float switch does not output the forced start control signal, the switch circuit is turned off.

[0022] In some embodiments of the present application, a float switch signal input and filtering circuit is provided between the float switch and the control module, and the float switch signal input and filtering circuit is used to filter the forced start control signal output by the float switch and then input it into the control module.

[0023] In some embodiments of the present application, a starting circuit is arranged between the control module and the AC water pump power drive module and the DC water pump power drive module, and the starting circuit receives a control signal from the control module and controls the operation of the AC water pump power drive module and the DC water pump power drive module.

[0024] Compared with the prior art, the advantages and positive effects of the utility model are as follows: an air conditioning device includes an AC power interface, a switching power supply, a power drive module, a water pump interface, an AC fault detection module, a DC fault detection module and a control module, the power drive module includes an AC water pump power drive module and a DC water pump power drive module; the water pump interface includes an AC water pump interface and a DC water pump interface, the AC water pump interface is used to connect an AC water pump; the DC water pump interface is used to connect a DC water pump; the AC water pump fault detection module is used to detect the fault of the AC water pump and generate a fault signal; the DC water pump fault detection module is used to detect the fault of the DC water pump and generate a fault signal; the control module is used to receive the fault signal and output a control signal to the AC water pump power drive module and / or the DC water pump power drive module. The utility model air conditioning device is compatible with AC water pumps and DC water pumps, improves the compatibility and reliability of circuit design, and reduces the difficulty and cost of after-sales maintenance.

[0025] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 is a principle block diagram of an air conditioning device according to an embodiment;

[0028] Figure 2 is a circuit diagram according to an embodiment;

[0029] Figure 3 is a circuit diagram of an AC water pump power drive module according to an embodiment;

[0030] Figure 4 is a circuit diagram of a DC water pump power drive module according to an embodiment;

[0031] Figure 5 is a circuit diagram of an AC water pump fault detection module according to an embodiment;

[0032] Figure 6 is a circuit diagram of a DC water pump fault detection module according to an embodiment;

[0033] Figure 7 is a circuit diagram of a circuit between a float switch and a control module according to an embodiment;

[0034] Figure 8 is a circuit diagram of a startup circuit according to an embodiment;

[0035] Fig. 9 is a functional block diagram of an air conditioning device according to another embodiment;

[0036] Fig.10 is a circuit diagram according to another embodiment. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0039] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] The disclosure below provides many different embodiments or examples for realizing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the utility model. In addition, the utility model may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides various specific examples of processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0043] The air conditioning device provided in the present application performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, a throttling device and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion and evaporation to cool or heat the indoor space.

[0044] The low-temperature and low-pressure refrigerant enters the compressor, which compresses it into high-temperature and high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and the heat is released to the surrounding environment through the condensation process.

[0045] The throttling device expands the high-temperature and high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the throttling device and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. In the entire cycle, the air conditioner can adjust the temperature of the indoor space.

[0046] The outdoor unit of the air conditioner refers to a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and a throttling device may be provided in the indoor unit or the outdoor unit.

[0047] The indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator. When the indoor heat exchanger functions as a condenser, the air conditioner functions as a heater in a heating state, and when the indoor heat exchanger functions as an evaporator, the air conditioner functions as a cooler in a cooling state.

[0048] When the air conditioner is cooling, the indoor heat exchanger is an evaporator to reduce the indoor temperature. During the evaporation process of the evaporator, the water vapor in the air will condense to produce condensed water. Therefore, the air conditioner is provided with a water receiving pan and a drain pipe. The water receiving pan is used to receive the condensed water produced by the evaporator, and the drain pipe is used to discharge the condensed water received in the water receiving pan. In order to accelerate the discharge of condensed water and avoid water leakage, the air conditioner includes a drain pump, which is used to absorb the condensed water in the water receiving pan and discharge the condensed water.

[0049] The air conditioning unit is compatible with both AC water pumps and DC water pumps to improve the versatility of the air conditioning unit for water pumps and facilitate after-sales maintenance.

[0050] The air conditioning device includes an AC water pump and a DC water pump control circuit to control the AC water pump and the DC water pump, so that the air conditioning device can use both the AC water pump and the DC water pump, making the air conditioning device compatible with the AC water pump and the DC water pump, and improving the versatility of the air conditioning device for the water pump.

[0051] exist Figure 1 , 2 In the example, the air conditioning device includes: an AC power interface CN1, a switching power supply, a power drive module, a water pump interface, an AC water pump fault detection module, a DC water pump fault detection module and a control module.

[0052] The water pump interface includes an AC water pump interface CN2 and a DC water pump interface CN4.

[0053] The AC water pump interface CN2 is used to connect an AC water pump.

[0054] The air conditioning device is provided with an AC water pump interface CN2 to facilitate replacement and maintenance of the AC water pump.

[0055] The DC water pump interface CN3 is used to connect a DC water pump.

[0056] The air conditioning device is provided with a DC water pump interface CN2 to facilitate replacement and maintenance of the DC water pump.

[0057] The power drive module includes an AC water pump power drive module and a DC water pump power drive module.

[0058] The AC water pump power drive module is used to drive the AC water pump.

[0059] The AC water pump power drive module is used to receive the signal from the control module U1 or the float switch CN3 and drive the AC water pump CN2 to work.

[0060] The AC water pump power drive module includes a drive circuit and a switch circuit. The drive circuit controls the on and off of the switch circuit. When the switch circuit is on, the AC water pump interface CN2 is powered on. When the switch circuit is off, the AC water pump interface CN2 loses power.

[0061] The drive circuit is used to receive the control signal sent by the control module and drive the switch circuit to realize the on and off of the switch, so that the AC water pump interface CN2 is powered on or off.

[0062] exist Figure 3 In the example, the AC water pump power drive module includes a resistor R13, a resistor R14, a transistor Q6, a drive chip U2, a diode D3 and a switch RY1.

[0063] The driving circuit includes a resistor R13, a resistor R14, a transistor Q6 and a driving chip U2.

[0064] The switching circuit includes a diode D3 and a switch RY1.

[0065] The electronic components of the drive circuit and the switch circuit are connected as follows:

[0066] The base of the transistor Q6 is connected to the signal output circuit of the control module U1 and is grounded through the resistor R13.

[0067] The collector of the transistor Q6 is connected to the power supply through the resistor R14, and the collector of the transistor Q6 is connected to the input end of the driving chip U2.

[0068] The emitter of transistor Q6 is grounded.

[0069] The output end of the driving chip U2 is connected to the induction coil of the switch RY1.

[0070] The switch RY1 includes an induction coil and a switch terminal.

[0071] One end of the switch end of the switch RY1 is connected to the live wire L, and the other end is connected to the first interface of the AC water pump interface CN2, and the second interface of the AC water pump interface CN2 is grounded.

[0072] The induction coil of the switch RY1 is connected in parallel with the diode D3.

[0073] The DC water pump power drive module is used to drive the DC water pump CN4 to work.

[0074] The DC water pump power drive module is used to receive the signal from the control module U1 or the float switch CN3 and drive the DC water pump CN4 to work.

[0075] exist Figure 4 In the example, the DC water pump power drive module includes a resistor R5, a resistor R6, a resistor R7, a transistor Q2 and a transistor Q3.

[0076] The base of transistor Q2 is connected to the signal output circuit of control module U1, the collector of transistor Q2 is connected to the power supply through resistor R5, the collector of transistor Q2 is connected to the base of transistor Q3 through resistor R6, and the emitter of transistor Q2 is grounded.

[0077] The base of the transistor Q3 is connected to the power supply through the resistor R7, the emitter of the transistor Q3 is connected to the power supply, the collector of the transistor Q3 is connected to the first interface of the DC water pump interface CN4, and the second interface of the DC water pump interface CN4 is grounded.

[0078] A diode D4 is connected between the first interface and the second interface of the DC water pump interface CN4, the anode of the diode D4 is grounded, and the cathode of the diode D4 is connected to the first interface of the DC water pump interface CN4.

[0079] A capacitor C2 is connected between the first interface of the DC water pump interface CN4 and the ground.

[0080] The AC water pump fault detection module is used to detect the fault of the AC water pump connected to the AC water pump interface CN2 and generate a fault signal, and send the fault signal to the control module U1.

[0081] exist Figure 5 In the example, the AC water pump fault detection module includes a current sensor U3, a resistor R11 and a capacitor C4.

[0082] The current sensor U3 is connected to the live wire L of the AC power interface CN1, and the output end of the current sensor U3 is connected to the control module through the resistor R11.

[0083] The resistor R11 and the control module are grounded via the capacitor C4.

[0084] The DC water pump fault detection module is used to detect the fault of the DC water pump connected to the DC water pump interface CN1 and generate a fault signal, and send the fault signal to the control module U1.

[0085] exist Figure 6 In the example of FIG. 1 , the DC water pump fault detection module includes a thermistor PTC1 , a resistor R8 , a resistor R9 , a resistor R10 , an amplifier U4 , and a capacitor C3 .

[0086] The thermistor PTC1 is connected between the first interface of the DC water pump interface and the collector of the transistor Q3.

[0087] Two ends of the thermistor PTC1 are connected to the input end of the amplifier U4 through the resistor R8 and the resistor R9 respectively, and the output end of the amplifier U4 is connected to the control module U1 through the resistor R10.

[0088] The amplifier U4 is connected to the power supply and the ground respectively, and the resistor R10 and the control module U1 are grounded via the capacitor C3.

[0089] The control module U1 is used to receive the fault signal and output the control signal to the AC water pump power drive module and the DC water pump power drive module.

[0090] The control module U1 outputs a control signal to the AC water pump power drive module and the DC water pump power drive module to make the AC water pump power drive module and the DC water pump power drive module work or stop working.

[0091] A starting circuit is provided between the control module U1 and the AC water pump power drive module and the DC water pump power drive module. The starting circuit receives a control signal from the control module and controls the AC water pump power drive module and the DC water pump power drive module to work.

[0092] exist Figure 8 In the example, the startup circuit includes a resistor R12, a resistor R13, a transistor Q4, and a transistor Q5.

[0093] The starting circuit is also used to convert the 5V control signal into a 12V power supply control signal, and convert the 5V control signal output by the control module into a 12V power supply control signal, so as to facilitate the control of the power circuit of the water pump.

[0094] The base of the transistor Q4 is connected to the control module U1 , the base of the transistor Q4 is grounded through the resistor R12 , the emitter of the transistor Q4 is grounded, and the collector of the transistor Q4 is connected to the base of the transistor Q5 .

[0095] The emitter of the transistor Q5 is connected to the power supply, and the collector of the transistor Q5 is connected to the DC water pump power drive module and the AC water pump drive module.

[0096] The collector of the transistor Q5 is connected to the base of the transistor Q2 to output a control signal to the transistor Q2, thereby controlling the DC water pump power drive module.

[0097] The collector of the transistor Q5 is connected to the base of the transistor Q6 to output a control signal to the transistor Q6, thereby controlling the AC water pump power drive module.

[0098] In order to prevent the water level in the water tray from being too high and causing water leakage, the air conditioning device includes a float switch CN3. The float switch CN3 is used to detect the water level in the water tray. When the water level reaches the set water level, the float switch CN3 is used to output a forced start control signal to the AC water pump power drive module, the DC water pump power drive module and the control module U1. The forced start control signal is used to control the operation of the AC water pump power drive module and the DC water pump power drive module, and notify the control module U1.

[0099] The float switch CN3 is used to detect the water level in the water tray. When the water level reaches the set threshold, it outputs a forced start control signal to the AC water pump power drive module and the DC water pump power drive module, forcing the AC water pump power drive module and the DC water pump power drive module to start, and forcing the AC water pump and the DC water pump to drain water, so as to drain the water in time and prevent water leakage.

[0100] The float switch CN3 is used to detect the water level in the water receiving tray, and when the water level reaches a set threshold, it outputs a forced start control signal to the control module U1 to inform the control module U1 of the water level status at that time.

[0101] A float switch signal input and filter circuit is provided between the float switch CN3 and the control module U1 . The float switch signal input and filter circuit is used to filter the forced start control signal output by the float switch and then input the signal into the control module U1 .

[0102] exist Figure 7 In the example, the first interface of the float switch CN3 is connected to the power supply, and the second interface of the float switch CN3 is connected to the control module U1.

[0103] The float switch signal input and filtering circuit includes resistor R1, resistor R2, resistor R3 and C1.

[0104] The second interface of the float switch CN3 is connected to the control module via the resistor R2.

[0105] The resistor R2 and the second interface of the float switch CN3 are grounded via the resistor R3.

[0106] The resistor R2 and the control module U1 are grounded via the resistor R1.

[0107] The two ends of the resistor R1 are connected in parallel with the capacitor C1.

[0108] The second interface of the float switch CN3 is connected to the AC water pump power drive module. The float switch CN3 is used to output a forced start control signal to the AC water pump power drive module.

[0109] The float switch CN3 is used to output a forced start control signal to the switch circuit of the AC water pump power drive module. When the float switch CN3 outputs the forced start control signal, the switch circuit is turned on. When the float switch CN3 does not output the forced start control signal, the switch circuit is turned off.

[0110] The second interface of the float switch CN3 is connected to the induction coil of the switch RY1 of the AC water pump power drive module. The output signal of the float switch CN3 directly controls the switch RY1 to control the connection and disconnection between the AC water pump interface CN2 and the AC power, thereby controlling the power on or off of the AC water pump.

[0111] The second interface of the float switch CN3 is connected to the DC water pump power drive module.

[0112] The second interface of the float switch CN3 is connected to the DC water pump power drive module through the transistor Q1.

[0113] The base of the transistor Q1 is connected to the second interface of the float switch CN3. The collector of the transistor Q1 is connected to the power supply through the resistor R4, and the collector of the transistor Q1 is connected to the base of the diode Q2. The emitter of the transistor Q1 is grounded.

[0114] In order to prevent the control signals of the float switch CN3 and the control module U1 from interfering with each other, the air conditioning device includes a one-way flow circuit.

[0115] A first unidirectional flow circuit is provided between the float switch CN3 and the DC water pump power drive module, and the first unidirectional flow circuit is used to enable the forced start control signal of the float switch CN3 to be output to the DC water pump power drive module, and to prevent the control signal output by the control module U1 from being output to the output circuit of the float switch CN3.

[0116] exist Figure 2 In the example, the control signal unidirectional flow circuit includes a first diode D1 arranged between the float switch CN3 output circuit and the DC water pump power drive module, the positive electrode of the first diode D1 is connected to the float switch output circuit, and the negative electrode of the first diode D1 is connected to the DC water pump power drive module and the control signal output circuit of the control module.

[0117] The first diode D1 is used to enable the forced start control signal of the float switch CN3 to be output to the DC water pump power drive module, and the first diode D1 is used to prevent the start circuit signal from being output to the circuit between the float switch CN3 and the control module U1.

[0118] A second unidirectional flow circuit is provided between the control signal output circuit of the control module U1 and the DC water pump power drive module. The second unidirectional flow circuit is used to enable the control signal output by the control module U1 to be output to the DC water pump power drive module, and to prevent the forced start control signal output by the float switch CN3 from being output to the control signal output circuit of the control module U1.

[0119] exist Figure 2 In the example, the second unidirectional flow circuit includes a second diode D2 arranged between the control signal output circuit of the control module U1 and the DC water pump power drive module, the positive electrode of the second diode D2 is connected to the control signal output circuit of the control module U1, and the negative electrode of the second diode D2 is connected to the output circuit of the DC water pump power drive module and the float switch CN3.

[0120] The second diode D2 is used to allow the output signal of the start-up circuit to be output to the DC water pump power drive module, and the second diode D2 is used to prevent the forced start-up control signal of the float switch CN3 from being output to the start-up circuit.

[0121] The cathode of the first diode D1 is connected to the base of the transistor Q2 and the cathode of the second diode D2.

[0122] The anode of the first diode D1 is connected to the collector of the transistor Q1 .

[0123] The cathode of the second diode D2 is connected to the cathode of the first diode D1 and the base of the transistor Q2.

[0124] The anode of the second diode D2 is connected to the collector of the transistor Q5.

[0125] When the float switch CN3 is turned on, the DC water pump power drive module and the AC water pump fault detection module are forced to start to facilitate timely drainage.

[0126] The control module U1 receives the fault signals detected by the AC water pump fault detection module and the DC water pump fault detection module and issues a water pump fault alarm prompt.

[0127] The control module U1 can further control the air conditioner and the device to shut down or control the switch power supply to stop working.

[0128] exist Fig. 9 , 10 In the embodiment, the control module U1 can output control signals to the DC water pump power drive module and the AC water pump fault detection module respectively, so that the DC water pump or the AC water pump can be controlled to work separately, or both the DC water pump and the AC water pump can be controlled to work.

[0129] At this time, the control module can control the DC water pump or AC water pump to work independently according to demand, which is more flexible.

[0130] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0131] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. An air conditioning device, comprising: AC power interface, switching power supply, power drive module and water pump interface, characterized in that: The power drive module includes an AC water pump power drive module and a DC water pump power drive module; The water pump interface includes an AC water pump interface and a DC water pump interface; The air conditioning device comprises: An AC water pump fault detection module, used to detect the fault of the AC water pump and generate a fault signal; A DC water pump fault detection module, used to detect a fault of the DC water pump and generate a fault signal; A control module is used to receive the fault signal and output a control signal to the AC water pump power drive module and / or the DC water pump power drive module.

2. The air conditioning device according to claim 1, characterized in that: The air conditioning device includes a float switch, which is used to output a forced start control signal to the AC water pump power drive module, the DC water pump power drive module and the control module, and the forced start control signal is used to control the operation of the AC water pump power drive module and the DC water pump power drive module.

3. The air conditioning device according to claim 2, characterized in that: A first one-way flow circuit is provided between the float switch and the DC water pump power drive module, and the first one-way flow circuit is used to prevent the control signal output by the control module from being output to the output circuit of the float switch.

4. The air conditioning device according to claim 3, characterized in that: The control signal unidirectional flow circuit includes a first diode arranged between the float switch output circuit and the DC water pump power drive module, the positive pole of the first diode is connected to the float switch output circuit, and the negative pole of the first diode is connected to the DC water pump power drive module and the control signal output circuit of the control module.

5. The air conditioning device according to claim 2, characterized in that: A second unidirectional flow circuit is provided between the control signal output circuit of the control module and the DC water pump power drive module, and the second unidirectional flow circuit is used to prevent the forced start control signal output by the float switch from being output to the control signal output circuit of the control module.

6. The air conditioning device according to claim 5, characterized in that: The second unidirectional flow circuit includes a second diode arranged between the control signal output circuit of the control module and the DC water pump power drive module, the anode of the second diode is connected to the control signal output circuit of the control module, and the cathode of the second diode is connected to the DC water pump power drive module and the float switch output circuit.

7. The air conditioning device according to claim 2, characterized in that: The AC water pump power drive module includes a drive circuit and a switch circuit. The drive circuit controls the on and off of the switch circuit. When the switch circuit is on, the AC water pump interface is powered, and when the switch circuit is off, the AC water pump interface loses power.

8. The air conditioning device according to claim 7, characterized in that: The float switch is used to output a forced start control signal to the switch circuit. When the float switch outputs the forced start control signal, the switch circuit is turned on. When the float switch does not output the forced start control signal, the switch circuit is turned off.

9. The air conditioning device according to claim 2, characterized in that: A float switch signal input and filtering circuit is provided between the float switch and the control module. The float switch signal input and filtering circuit is used to filter the forced start control signal output by the float switch and then input the signal into the control module.

10. The air conditioning device according to claim 1, characterized in that: A starting circuit is provided between the control module and the AC water pump power drive module and the DC water pump power drive module. The starting circuit receives a control signal from the control module and controls the AC water pump power drive module and the DC water pump power drive module to operate.

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