Air conditioner

Abstract

The utility model discloses an air conditioner, which comprises a power supply conversion module, a door card signal detection module and a controller, and is characterized in that the controller is connected with the power supply conversion module through a power supply port so as to receive direct current through the power supply port; the door card signal detection port is connected with the door card signal detection module, the controller receives the first door card state detection signal through the door card signal detection port, determines the door card state based on the first door card state detection signal and controls the operation state of the air conditioner based on the door card state, the door card state comprises insertion of the door card insertion device or removal of the door card insertion device, the accuracy of door card state detection is improved, meanwhile, through mutual cooperation of the door card signal detection module and the controller, the anti-interference capacity of the air conditioner can be improved, and the purpose of reducing power consumption is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner technical field especially is related to an air conditioner. BACKGROUND

[0002] In the process of improving the air conditioner use experience in hotel or apartment guest room, in order to ensure that the air conditioner can be intelligently controlled according to the actual check-in state (i.e. whether the door card is inserted) of the user, the air conditioner is usually installed near the bed where the user rests, and the door card is installed beside the door to facilitate the user to insert or take out when entering or leaving, so that the distance between the air conditioner and the door is far, and the two need to be connected by a long connecting line, but this will increase the risk of induction interference voltage and affect the detection of the controller. At present, the method of increasing detection circuit current and detection power is usually used to solve the above problems, for example, by reducing the resistance value, although this enhances the anti-interference ability, but also increases the energy consumption. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model aims at providing an air conditioner.

[0004] The utility model provides an air conditioner, which comprises:

[0005] A power conversion module is connected with an alternating current power supply and is used to convert alternating current output by the alternating current power supply into direct current suitable for powering a controller;

[0006] A door card signal detection module is connected with a door card insertion device and is used to detect whether the door card is inserted into or taken out of the door card insertion device and output a corresponding first door card state detection signal, wherein the first door card state detection signal comprises a door card insertion signal or a door card taking-out signal;

[0007] The controller comprises a power supply port and a door card signal detection port; the controller is connected with the power conversion module through the power supply port to receive the direct current through the power supply port; the door card signal detection port is connected with the door card signal detection module, and the controller receives the first door card state detection signal through the door card signal detection port and determines a door card state based on the first door card state detection signal, and controls the operating state of the air conditioner based on the door card state, wherein the door card state comprises inserting the door card insertion device or taking out the door card insertion device.

[0008] In addition, the air conditioner according to the utility model embodiment can also have the following additional technical features:

[0009] Further, the controller determines that the door card is inserted into the door card insertion device when the voltage value corresponding to the first door card state detection signal is lower than a first voltage threshold pre-stored in the controller, and controls the air conditioner to start running; and the controller determines that the door card is taken out of the door card insertion device when the voltage value corresponding to the first door card state detection signal is higher than a second voltage threshold pre-stored in the controller, and controls the air conditioner to stop running and enter a standby state, wherein the first voltage threshold is lower than the second voltage threshold.

[0010] The technical solution has the following advantages or beneficial effects: the door card state can be determined according to the comparison result of the voltage value corresponding to the first door card state detection signal and the first voltage threshold or the second voltage threshold, and the running state of the air conditioner can be controlled according to the door card state, thereby improving the flexibility of the air conditioner running state control.

[0011] Further, the door card signal detection module comprises: a door card signal detection unit configured to detect whether the door card is inserted into or taken out of the door card insertion device, and output a first voltage signal for indicating the door card insertion or a second voltage signal for indicating the door card taking out; and a signal processing unit connected with the door card signal detection unit, configured to process the first voltage signal and output the door card insertion signal, or process the second voltage signal and output the door card taking out signal.

[0012] The technical solution has the following advantages or beneficial effects: the signal processing unit can be provided with accurate voltage signals according to the first voltage signal or the second voltage signal, and the corresponding processing signals can be output based on the voltage signals, thereby improving the accuracy of the signals obtained by the controller and the accuracy of the door card state detection.

[0013] Further, the door card signal detection unit comprises: a connection terminal and a first switch; a first pin of the connection terminal is connected with a second pin of the connection terminal through the first switch, the first pin is further connected with the signal processing unit, and the second pin is further connected with a ground terminal; when the door card is inserted into the door card insertion device, the first switch is turned on, the first pin is connected with the second pin and connected with the ground terminal to output the first voltage signal; when the door card is taken out of the door card insertion device, the first switch is turned off, the first pin is disconnected from the second pin to output the second voltage signal, and the voltage value of the first voltage signal is lower than the voltage value of the second voltage signal.

[0014] The technical scheme has the following advantages or beneficial effects: according to the state of the door card being inserted into or taken out of the door card insertion device, the state of the first switch is controlled, and then the connection state of the first pin and the second pin is controlled according to the state of the first switch, so that the voltage value corresponding to the first voltage signal or the second voltage signal output by the first pin is determined according to the connection state of the first pin and the second pin, and then the door card state is accurately judged according to the voltage value of the first voltage signal or the second voltage signal, and the accuracy of the door card state detection is improved.

[0015] Further, the signal processing unit comprises a first transistor, a second transistor, a third transistor, a first resistor, a second resistor, a third resistor, a fourth resistor and a fifth resistor; the base of the first transistor is connected with the first pin, the base of the first transistor is also connected to a first preset DC power source through the first resistor, the collector of the first transistor is connected with the first preset DC power source through the second resistor, the emitter of the first transistor is connected with one end of the third resistor, the emitter of the first transistor is also grounded through the fourth resistor, and the emitter of the first transistor is also connected with the door card signal detection port; the base of the second transistor is connected with the other end of the third resistor, the emitter of the second transistor is connected with a second preset DC power source, and the voltage provided by the first preset DC power source is higher than the voltage provided by the second preset DC power source; the collector of the third transistor is connected to the base of the first transistor through the fifth resistor, and the emitter of the third transistor is grounded.

[0016] The technical scheme has the following advantages or beneficial effects: the mutual cooperation between the first transistor, the second transistor and the third transistor is realized, the door card signal detection port obtains the first door card state detection signal according to the on-off state of the first transistor, the second transistor and the third transistor, and the door card state is determined based on the voltage value corresponding to the first door card state detection signal, so that the accuracy of the door card state detection is improved.

[0017] Further, the door card signal detection port is grounded through the fourth resistor, and the door card signal detection port is also connected to the base of the second transistor through the third resistor.

[0018] The technical scheme has the following advantages or beneficial effects: the door card signal detection port can accurately detect the door card state according to the voltage division effect of the third resistor and the fourth resistor.

[0019] Further, the signal processing unit comprises a sixth resistor; one end of the sixth resistor is connected to the collector of the second transistor, and the other end of the sixth resistor is connected to the base of the third transistor.

[0020] The technical scheme has the advantages or beneficial effects that the connection of the triode and the third triode is realized, the anti-interference capability of the air conditioner is improved, and the door card signal detection port can accurately detect the door card state.

[0021] Further, the signal processing unit further comprises a seventh resistor, one end of the seventh resistor is connected between the sixth resistor and the base of the third triode, and the other end of the seventh resistor is grounded.

[0022] The technical scheme has the advantages or beneficial effects that the conduction of the first triode is more reliable, and the anti-interference capability of the signal processing unit when the door card signal detection unit is in the off state is effectively improved.

[0023] Further, the signal processing unit comprises a first diode, the anode of the first diode is connected with the base of the first triode and the fifth resistor respectively, the anode of the first diode is also connected with the first pin, and the cathode of the first diode is connected with the first preset DC power supply.

[0024] The technical scheme has the advantages or beneficial effects that the voltage of the first pin can be limited, and the circuit is prevented from being damaged due to the excessively high voltage of the first pin.

[0025] Further, the signal processing unit further comprises a second diode, the anode of the second diode is connected with the door card signal detection port, the cathode of the second diode is connected to a third preset DC power supply, and the voltage provided by the third preset DC power supply is less than or equal to the voltage provided by the first preset DC power supply and the second preset DC power supply.

[0026] The technical scheme has the advantages or beneficial effects that the voltage of the door card signal detection port can be limited, the voltage protection is provided for the door card signal detection port, and the circuit is prevented from being damaged due to the excessively high voltage of the door card signal detection port.

[0027] According to the air conditioner provided in the embodiment of the present application, the power conversion module can provide certain DC power for the controller through the power supply port of the controller, the door card signal detection port of the controller is connected with the door card signal detection module, when the door card signal detection module outputs the first door card state detection signal, the controller can receive the first door card state detection signal through the door card signal detection port, determine the door card state according to the first door card state detection signal, i.e., determine that the door card state is that the door card is inserted into the equipment or the door card is taken out, and flexibly control the running state of the air conditioner according to the door card state, so as to improve the accuracy of the door card state detection, meanwhile, through the mutual cooperation of the door card signal detection module and the controller, the anti-interference capability of the air conditioner can be improved, and the purpose of reducing the power consumption is achieved.

[0028] Additional aspects and advantages of the present application will be given in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description or can be learned by the practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0029] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0030] Figure 1 is a structural schematic diagram of an air conditioner according to one embodiment of the present application;

[0031] Figure 2 is a structural schematic diagram of a controller according to one embodiment of the present application;

[0032] Figure 3 is a structural schematic diagram of an air conditioner according to another embodiment of the present application;

[0033] Figure 4 is a connection schematic diagram of various modules in an air conditioner according to one embodiment of the present application;

[0034] Figure 5 is a structural schematic diagram of a door card signal detection module according to one embodiment of the present application;

[0035] Figure 6 is a circuit schematic diagram of an air conditioner according to one embodiment of the present application. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be apparently and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0038] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] This utility model embodiment provides an air conditioner 10, see reference. Figure 1 The air conditioner 10 includes a refrigeration system for exchanging heat with indoor air to meet cooling or heating needs.

[0041] The refrigeration system includes a compressor, a condenser, an electronic expansion valve, and an evaporator. In this invention, the air conditioner 10 performs a refrigeration cycle by using the compressor, condenser, electronic expansion valve, and evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0042] The compressor compresses refrigerant gas under high temperature and pressure 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.

[0043] The electronic expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant that has expanded in the electronic expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor.

[0044] The evaporator achieves a cooling effect by utilizing the latent heat of refrigerant evaporation to exchange heat with the material being cooled. Throughout the cycle, the air conditioner 10 can regulate the temperature of the indoor space.

[0045] The outdoor unit 2 of the air conditioner 10 refers to the part of the refrigeration cycle that includes the compressor and the outdoor heat exchanger. The indoor unit 1 of the air conditioner 10 includes the indoor heat exchanger, and an electronic expansion valve can be provided in either the indoor unit 1 or the outdoor unit 2.

[0046] The indoor heat exchanger and the outdoor heat exchanger are used as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner 10 is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner 10 is used as a cooler in a cooling mode.

[0047] The air conditioner 10 in the utility model includes an indoor unit 1 and an outdoor unit 2, and the indoor unit 1 and the outdoor unit 2 can be set as an all-in-one machine or a split machine. The indoor unit 1 can be set as a wall-mounted type, a ceiling machine, a ducted type and the like, and the indoor unit 1 is installed on the top or the top of an indoor room.

[0048] Referring to Figure 1 For example, the indoor wall machine is usually installed at a position of an indoor wall surface and the like, and for another example, the indoor cabinet machine (not shown in the figure) is also one indoor unit 1 form of the indoor unit 1.

[0049] For example, the split machine, the air conditioner 10 includes an indoor unit 1 and an outdoor unit 2, wherein the outdoor unit 2 is usually arranged outdoors and is used for indoor environment heat exchange.

[0050] In addition, as shown in the figure, the air conditioner 10 is provided with a controller 71 to control the operation of each component in the air conditioner 10, so that each component of the air conditioner 10 operates to realize each predetermined function of the air conditioner 10. Among them, the air conditioner 10 is also attached with a control device 200, for example, the control device 200 is specifically set as a remote controller, which has the function of communicating with the controller 71 by using infrared rays or other communication modes. The remote controller is used for the user to control various controls of the air conditioner 10, so as to realize the interaction between the user and the air conditioner 10.

[0051] The indoor unit 1 of the air conditioner 10 in the utility model embodiment is arranged on the top or the upper part of the indoor room, generally, the installation height of the indoor unit 1 is higher than the user activity area, the indoor unit 1 includes a return air inlet and an air outlet which communicate with the indoor room, indoor air passes through the return air inlet and the indoor unit 1, and flows back to the indoor room through the air outlet.

[0052] The refrigerant circulation loop in the utility model makes the refrigerant circulate in the loop composed of the compressor, the condenser, the electronic expansion valve and the evaporator, one of the condenser and the evaporator is an outdoor heat exchanger, and the other is an indoor heat exchanger. The indoor heat exchanger is used for heat exchange with the air in the indoor unit 1, and the outdoor heat exchanger of the outdoor unit 2 is used for heat exchange with the air in the outdoor unit 2, so as to realize the refrigeration or heating demand of the air conditioner 10.

[0053] The indoor unit 1 further includes an indoor fan, the indoor fan is arranged at the indoor heat exchanger close to the return air inlet or the air outlet, and is used for sending the heat-exchanged air to the indoor room, and the indoor fan includes a plurality of gears, which are used for changing the air outlet wind speed of the air outlet.

[0054] A deflector is arranged at the position of the air outlet, the deflector adjusts the air outflow direction of the air flowing through the air outlet by changing the relative rotation angle of the deflector and the air outlet, thereby affecting the air temperature stratification in the room.

[0055] In the embodiment shown in the utility model, the air conditioner 10 further comprises a controller 71, which is a device capable of generating operation control signals according to instruction operation codes and time sequence signals, and instructing the air conditioner 10 to execute control instructions. For example, in response to the power-on or power-off instruction issued by the user, the controller 71 can execute the operation related to the object selected by the power-on or power-off instruction.

[0056] The utility model embodiment further provides a kind of hardware structure schematic diagram of controller 71, as shown in Figure 2 The controller 71 includes a processor 83, and optionally further includes a memory 82 and a communication interface 84 connected to the processor 83. The processor 83, the memory 82 and the communication interface 84 are connected by a bus 81.

[0057] The processor 83 can be a central processing unit (CPU), a general-purpose processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller 718, a programmable logic device (PLD) or any combination thereof. The processor 83 can also be any other device with processing function, such as a circuit, a device or a software module. The processor 83 can also include multiple CPUs, and the processor 83 can be a single-CPU processor 83 or a multi-CPU processor 83. The processor 83 herein can refer to one or more devices, circuits or processing cores for processing data (such as computer program instructions).

[0058] The memory 82 can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magneto-optical disk storage, a magnetic disk storage or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and that can be accessed by a computer, and the embodiments of the present application do not make any limitation thereon. The memory 82 can exist independently or can be integrated with the processor 83. The memory 82 can contain computer program code. The processor 83 is configured to execute the computer program code stored in the memory 82, so as to realize the control method of the air conditioner provided by the embodiments of the present application.

[0059] The communication interface 84 can be used to communicate with other devices or communication networks (such as Ethernet, radio access network (RAN), wireless local area network (WLAN), etc. The communication interface 84 can be a module, a circuit, a transceiver or any device capable of realizing communication.

[0060] The bus 81 can be a peripheral component interconnect (PCI) bus 81 or an extended industry standard architecture (EISA) bus 81, etc. The bus 81 can be divided into an address bus 81, a data bus 81, a control bus 81, etc. For the convenience of representation, Figure 2 Only one thick line is used in the figure, but it does not mean that there is only one bus 81 or only one type of bus 81.

[0061] The following will be described with reference to Figures 3-6 The air conditioner according to the embodiments of the present application.

[0062] Figure 3 is a structural schematic diagram of an air conditioner according to an embodiment of the present application. As shown in Figure 3As shown, an air conditioner 10 includes: a power conversion module 11, a door card signal detection module 12, and a controller 71.

[0063] Among them, such as Figure 4 As shown, the power conversion module 11 is connected to the AC power supply and is used to convert the AC power output by the AC power supply into DC power suitable for powering the controller 71; the door card signal detection module 12 is connected to the door card insertion device and is used to detect whether the door card is inserted or removed from the door card insertion device, and output the corresponding first door card status detection signal, which includes a door card insertion signal or a door card removal signal.

[0064] The controller 71 includes a power supply port and a door card signal detection port. The controller 71 is connected to the power conversion module through the power supply port to receive DC power. The door card signal detection port is connected to the door card signal detection module 12. The controller 71 receives a first door card status detection signal through the door card signal detection port, determines the door card status based on the first door card status detection signal, and controls the operation status of the air conditioner based on the door card status. The door card status includes inserting or removing the door card insertion device.

[0065] In an embodiment, such as Figure 4 As shown, the power conversion module 11 is connected to an AC power source and can convert the high-voltage AC power output by the AC power source into low-voltage DC power suitable for powering the controller 71. For example, if the AC power source outputs 220V high-voltage AC power, after passing through the power conversion module 11, the power conversion module 11 can convert the 220V high-voltage AC power into 5V or 12V low-voltage DC power to power the controller 71, ensuring that the controller 71 can operate stably, avoiding damage to the controller 71 from high-voltage electricity, and ensuring that the controller 71 can obtain a continuous and reliable power supply.

[0066] The door card signal detection module 12 is connected to the door card insertion device. It can issue a first door card status detection signal according to the door card insertion or removal status of the door card insertion device. That is, it can issue a door card insertion signal when the door card is inserted into the door card insertion device and issue a door card removal signal when the door card is removed from the door card insertion device.

[0067] The power supply port of the controller 71 is connected with the power conversion module 11, and can receive the direct current output by the power conversion module 11, for example, 5V or 12V, to supply power for the controller 71. In addition, the door card signal detection port of the controller 71 is connected with the door card signal detection module 12, and when the door card signal detection port 12 outputs a first door card state detection signal according to the state of inserting or taking out the door card into the door card insertion device, the controller 71 receives the first door card state detection signal through the door card signal detection port, and determines the door card state according to the first door card state detection signal, for example, when the door card signal detection module 12 outputs a door card insertion signal, the door card signal detection port receives the door card insertion signal, and it is determined that the door card state is inserting the door card into the door card insertion device, and when the door card signal detection module 12 outputs a door card taking-out signal, the door card signal detection port receives the door card taking-out signal, and it is determined that the door card state is taking out the door card from the door card insertion device, so as to control the running state of the air conditioner 10 according to the door card state, thereby improving the accuracy of the door card state detection and the accuracy of the air conditioner 10 control. At the same time, through the same cooperation of the door card signal detection module 12 and the controller 71, the resistance to external anti-interference signals can be enhanced, and the purpose of reducing power consumption can be achieved.

[0068] In an embodiment of the present application, when the voltage value corresponding to the first door card state detection signal is lower than the first voltage threshold value pre-stored in the controller 71, the controller 71 determines that the door card state is inserting the door card into the door card insertion device, and controls the air conditioner 10 to start running; and when the voltage value corresponding to the first door card state detection signal is higher than the second voltage threshold value pre-stored in the controller 71, the controller 71 determines that the door card state is taking out the door card from the door card insertion device, and controls the air conditioner 10 to stop running and enter the standby state, wherein the first voltage threshold value is less than the second voltage threshold value.

[0069] In an embodiment, after the door card signal detection port detects the first door card state detection signal, if the voltage value corresponding to the first door card state detection signal is lower than the first voltage threshold value pre-stored in the controller 71, for example, 1V, it is determined that the door card state is inserting the door card into the door card insertion device, and based on this determination result, the controller 71 controls the air conditioner 10 to start running; and if the voltage value corresponding to the first door card state detection signal is higher than the second voltage threshold value pre-stored in the controller 71, for example, 4V, it is determined that the door card state is taking out the door card from the door card insertion device, and based on this determination result, the controller 71 controls the air conditioner 10 to stop running and enter the standby state. In this way, the controller 71 can control the running of the air conditioner 10 according to the state of inserting or taking out the door card into the door card insertion device, thereby improving the flexibility of the running state control of the air conditioner 10.

[0070] The controller 71 has preset voltage thresholds (i.e. the first voltage threshold and the second voltage threshold) for judging the door card state inside, and the controller 71 has the function of comparing the voltage thresholds, that is, the controller can select the corresponding voltage threshold for comparison based on the voltage value corresponding to the first door card state detection signal, and accurately judge the insertion or removal state of the door card according to the comparison result, and then control the operation or standby of the air conditioner 10. It should be noted that the controller 71 generally has a numerical comparison function, such as voltage value comparison, and MCUs, single-chip microcomputers and the like all have the function of comparing values such as voltage, which is prior art. Therefore, the embodiment of the utility model only uses the conventional function of the controller 71, and does not involve improvement of the internal function of the controller 71, but uses the existing function of the controller 71 to realize the linkage of the state detection of the door card and the control of the air conditioner 10.

[0071] In an embodiment of the utility model, as shown in Figure 5 The door card signal detection module 12 comprises a door card signal detection unit 121 and a signal processing unit 122, wherein the door card signal detection unit 121 is used for detecting whether the door card is inserted or removed from the door card insertion device and outputting a first voltage signal for indicating the insertion of the door card or a second voltage signal for indicating the removal of the door card; the signal processing unit 122 is connected with the door card signal detection unit 121 and is used for processing the first voltage signal and outputting a door card insertion signal or processing the second voltage signal and outputting a door card removal signal.

[0072] In the embodiment, the door card signal detection unit 121 is used for detecting the insertion or removal state of the door card, judging whether the door card is inserted or removed from the door card insertion device, and outputting the corresponding voltage signal according to the judgment result.

[0073] Specifically, when the door card is inserted into the door card insertion device, the door card signal detection unit 121 will output the first voltage signal, and then the first voltage signal is transmitted to the signal processing unit 122. After receiving the first voltage signal, the signal processing unit 122 processes the first voltage signal to output a door card insertion signal that can be recognized by the controller 71.

[0074] Similarly, when the door card is removed from the door card insertion device, the door card signal detection unit 121 will output the second voltage signal and transmit the second voltage signal to the signal processing unit 122. After receiving the second voltage signal, the signal processing unit 122 processes the second voltage signal and outputs a door card removal signal that can be recognized by the controller 71. In this way, the detection of the door card state and the conversion of the signal are completed in the door card signal detection unit 121, thereby providing the controller 71 with an accurate voltage control signal, and improving the accuracy of the door card state detection and the accuracy of the control of the air conditioner 10.

[0075] In one embodiment of the present application, as shown in Figure 6 The door card signal detection unit 121 includes a connection terminal X1 and a first switch K1; a first pin 1 of the connection terminal X1 is connected to a second pin 2 of the connection terminal X1 through the first switch K1, the first pin 1 is also connected to a signal processing unit 122, and the second pin 2 is also connected to a ground terminal; when the door card is inserted into the door card insertion device, the first switch K1 is turned on, the first pin 1 is connected to the second pin 2 and connected to the ground terminal to output a first voltage signal; when the door card is taken out of the door card insertion device, the first switch K1 is turned off, the first pin 1 is disconnected from the second pin 2 to output a second voltage signal, and the voltage value of the first voltage signal is less than the voltage value of the second voltage signal.

[0076] In an embodiment, as shown in Figure 6 The connection terminal X1 serves as an interface and has two key pins, i.e., a first pin 1 and a second pin 2. The first pin 1 is conditionally connected to the second pin 2 through the first switch K1, that is, the connection state of the first pin 1 and the second pin 2 depends on the on-off state of the first switch K1.

[0077] Specifically, the first pin 1 is connected to the signal processing unit 122, the first pin 1 of the connection terminal X1 is connected to the second pin 2 of the connection terminal X1 through the first switch K1, and the second pin 2 is also connected to the ground terminal; when the door card is inserted into the door card insertion device, the first switch K1 is turned on, the first pin 1 of the connection terminal X1 is connected to the second pin 2 through the first switch K1, and the second pin 2 is connected to the ground terminal, the potential of the first pin 1 will be the same as the potential of the ground terminal, at this time, the first pin 1 outputs a first voltage signal with a low level to the signal processing unit 122, that is, the voltage value corresponding to the first voltage signal is 0V.

[0078] When the door card is taken out of the door card insertion device, the first switch K1 is turned off, the first pin 1 cannot be connected to the second pin 2 through the first switch K1, therefore, the voltage value corresponding to the second voltage signal output by the first pin 1 will be higher than the voltage value corresponding to the first voltage signal, so that the signal processing unit 122 can accurately identify the state of the insertion or taking out of the door card insertion device according to the voltage value corresponding to the first voltage signal or the second voltage signal, so that the signal processing unit 122 can make corresponding processing, thereby improving the accuracy of the door card state detection.

[0079] In one embodiment of the present application, as shown in Figure 6As shown, the signal processing unit 122 comprises a first triode V1, a second triode V2, a third triode V3, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, and a fifth resistor R5. The base B of the first triode V1 is connected to the first pin 1, and the base B of the first triode V1 is further connected to a first preset DC power source through the first resistor R1. The collector C of the first triode V1 is connected to the first preset DC power source through the second resistor R2. The emitter E of the first triode V1 is connected to one end of the third resistor R3, and the emitter E of the first triode V1 is further connected to a ground terminal through the fourth resistor R4. The emitter E of the first triode V1 is further connected to a door card signal detection port. The base B of the second triode V2 is connected to the other end of the third resistor R3. The emitter E of the second triode V2 is connected to a second preset DC power source. The voltage provided by the first preset DC power source is higher than the voltage provided by the second preset DC power source. The collector C of the third triode V3 is connected to the base B of the first triode V1 through the fifth resistor R5. The emitter E of the third triode V3 is connected to a ground terminal.

[0080] In an embodiment, as shown in Figure 6 The base of the first triode V1 is connected to the first pin 1. Therefore, the first voltage signal or the second voltage signal output by the first pin 1 can be transmitted to the base B of the first triode V1. The base B of the first triode V1 is further connected to a first preset DC power source through the first resistor R1. The first preset DC power source, for example, is 12V. The first preset DC power source can not only ensure that the first voltage signal or the second voltage signal is received, but also provide a stable DC input voltage for the first triode V1. The collector C of the first triode V1 is connected to the first preset DC power source through the second resistor R2, forming a stable loop. The emitter E of the first triode V1 is connected to the base B of the second triode V2 through the third resistor R3. The emitter E of the first triode V1 is further connected to a ground terminal (i.e., GND) through the fourth resistor R4. Meanwhile, the emitter E of the first triode V1 is further connected to a door card signal detection port.

[0081] The emitter of the second triode V2 is connected to a second preset DC power source, for example, 5V. The collector C of the third triode V3 is connected to the base B of the first triode V1 through the fifth resistor R5. In this way, the first triode V1, the second triode V2, and the third triode V3 directly form a loop. Meanwhile, the emitter E of the third triode V3 is connected to a ground terminal, which can help to adjust the working state of the signal processing unit 122. The first preset DC power source is higher than the second preset DC power source. The voltage difference formed by this helps to stabilize the operation of the signal processing unit 122.

[0082] Specifically, when the door card is inserted into the door card insertion device, the first switch K1 is turned on, the first pin 1 of the connection terminal X1 can be connected with the second pin 2 through the first switch K1, and grounded through the second pin 2, so that the first voltage signal output by the first pin 1 corresponds to a voltage value of 0V, and the first voltage signal is transmitted to the base B of the first triode V1, so that after the base B of the first triode V1 receives the first voltage signal, the voltage value of the base B of the first triode V1 is also 0V, at this time, the collector C and the emitter E of the first triode V1 cannot be turned on, that is, the collector C and the emitter E of the first triode V1 are in a cut-off state, and because the door card signal detection port is grounded through the fourth resistor R4 and connected to the base B of the second triode V2 through the third resistor R3, the voltage value between the emitter E and the base B of the second triode V2 can reach a preset third voltage threshold, for example, 0.7V, so that the emitter E and the collector C of the second triode V2 are turned on, the emitter E of the second triode V2 is also connected with the second preset DC power supply, the second preset DC power supply can supply power to the second triode V2, and ensure the stable operation of the second triode V2 and the whole signal processing unit 122, then the controller 71 can receive the first door card state detection signal through the door card signal detection port, so that the door card signal detection port can obtain the voltage value corresponding to the first door card state detection signal based on the voltage division of the third resistor R3 and the fourth resistor R4, and the second preset DC power supply (i.e. 5V), for example, the resistance value of the third resistor R3 is 100KΩ, and the resistance value of the fourth resistor R4 is 12KΩ, that is, V1=(5-0.7)*R1 / (R1+R2)=0.46V, since the voltage value V1 corresponding to the first door card state detection signal is lower than the first voltage threshold, that is, V1<1V, it is determined that the door card state is inserted into the door card insertion device, that is, the first door card state detection signal at this time is the door card insertion signal, so that the air conditioner 10 can be controlled to start running.

[0083] When the door card is taken out of the door card insertion device, the first switch K1 is turned off, the first pin 1 of the connection terminal X1 cannot be connected through the first switch K1, the voltage value corresponding to the second voltage signal output by the first pin 1 will be higher than that of the first voltage signal, the first preset DC power supply (i.e. 12V) can supply power to the base B of the first triode V1, the voltage value between the emitter E and the collector C of the third triode V3 after being turned on is about a preset fourth voltage threshold, for example, 0.3V, at this time, the voltage value at the base B of the first triode V1 is:

[0084] V2=[(12V-0.3V)R5* / (R1+R5)]+0.3V;

[0085] For example, the resistance value of the first resistor R1 is 23KΩ, and the resistance value of the fifth resistor R5 is 20KΩ, then V2=5.74V.

[0086] Therefore, the voltage value between the base B and the emitter E of the first triode V1 is higher than the preset third voltage threshold 0.7V, the first triode V1 is turned on, the first preset DC power supply is transmitted to the door card signal detection port through the first triode V1 after being divided by the second resistor R2, at this time, the voltage value between the collector C and the emitter E of the first triode V1 after being turned on is the preset fourth voltage threshold 0.3V, the controller 71 receives the first door card state detection signal through the door card signal detection port, and the voltage value corresponding to the first door card state detection signal received by the door card signal detection port is: V3=(12V-0.3V)*R4 / (R4+R2), wherein the resistance value of the second resistor is, for example, 15KΩ, and the resistance value of the fourth resistor R4 is, for example, 12KΩ, so V3=5.2V, therefore, the voltage value V3 corresponding to the first door card state detection signal received by the door card signal detection port at this time is higher than the second voltage threshold, that is, V3>4V, it can be determined that the door card state is that the door card is taken out and inserted into the equipment, that is, the first door card state detection signal at this time is the door card taking-out signal, so that the air conditioner 10 stops running and is in a standby state. According to different voltage values corresponding to the first door card state detection signal, the door card state is determined, and the operation of the air conditioner 10 is controlled based on the door card state, which can improve the accuracy of door card state detection and intelligent control of the air conditioner 10.

[0087] In an embodiment of the present application, as shown in Figure 6 The door card signal detection port is connected to the base B of the second triode V2 through the third resistor R3.

[0088] In an embodiment, as shown in Figure 6 The door card signal detection port is connected to the base B of the second triode V2 through the third resistor R3.

[0089] In an embodiment of the present application, as shown in Figure 6 The signal processing unit 122 comprises a sixth resistor R6, one end of the sixth resistor R6 is connected to the collector C of the second triode V2, and the other end of the sixth resistor R6 is connected to the base B of the third triode V3.

[0090] In an embodiment, as shown in Figure 6As shown, the collector C of the second diode V2 is connected to the base B of the third triode V3 through the sixth resistor R6, when it is determined that the door card is inserted into the equipment according to the first door card state detection signal, the base B of the second triode V2 will enter the conduction state according to the voltage signal obtained by the third resistor R3 voltage division, that is, the emitter E and the collector C of the second triode V2 are in conduction, the second preset DC power supply will be transmitted to the base B of the third triode V3 through the second triode V2 and the sixth resistor R6, the voltage value between the base B and the emitter E of the third triode V3 is greater than the third voltage threshold 0.7V, so that the collector C and the emitter E of the third triode V3 are in conduction, therefore, when the interference signal exists and makes the first pin 1 of the connection terminal X1 generate the interference voltage, the interference voltage will flow to the ground through the current loop formed by the fifth resistor R5, the third triode V3, the connection terminal X1 and the first switch K1, thereby consuming the interference voltage, effectively improving the anti-interference ability of the air conditioner 10, and ensuring that the door card signal detection port can accurately and stably reflect the door card state.

[0091] In an embodiment of the present application, as shown in Figure 6 The signal processing unit 122 further comprises a seventh resistor R7, one end of the seventh resistor R7 is connected between the sixth resistor R6 and the base B of the third triode V3, and the other end of the seventh resistor R7 is connected to the ground.

[0092] In an embodiment, as shown in Figure 6As shown, when the door card state is determined as the door card is inserted into the device according to the first door card state detection signal, at this time, since the base B of the second triode V2 is connected with the door card signal detection port through the third resistor R3, and the voltage value between the base B and the emitter E of the second triode V2 is lower than the third voltage threshold, that is, lower than the 0.7V conduction threshold, therefore, the second triode V2 is in the cut-off state, and the second preset DC power cannot be transmitted to the base B of the third triode V3 through the second triode V2 and the sixth resistor R6, and one end of the seventh resistor R7 is connected between the sixth resistor R6 and the base B of the third triode V3, and the other end of the seventh resistor R7 is grounded, so that the base B of the third triode V3 can be grounded through the seventh resistor R7, therefore, the voltage signal of the third triode V3 is a low-level signal, and the corresponding voltage value is 0V, so that the voltage value between the base B and the emitter E of the third triode V3 is lower than 0.7V, and the collector C and the emitter E of the third triode V3 cannot be conducted, so that the third triode V3 is in the cut-off state. In this way, there is no voltage division effect of the first resistor R1 and the fifth resistor R5, so that the voltage of the base B of the first triode V1 is further increased, and is closer to the voltage value 12V of the first preset DC power, and the voltage difference between the base B and the emitter E of the first triode V1 can be kept above 0.7V, so that the conduction of the first triode V1 is more reliable, thereby effectively improving the anti-interference ability of the entire signal processing unit 122 when the door card signal detection unit 121 is in the off state.

[0093] In addition, while improving the anti-interference ability, the current when the door card is inserted into the door card insertion device is 0.52mA, that is, I=12V / R1=0.52mA, wherein the resistance of the first resistor R1 is, for example, 23KΩ, and the power consumption is 12V*I=0.006W, which is much lower than 0.072W, thereby greatly reducing the power consumption.

[0094] In an embodiment of the present application, as shown in Figure 6 The signal processing unit 122 comprises a first diode D1, the anode of the first diode D1 is connected with the base B of the first triode V1 and the fifth resistor R5, and the anode of the first diode D1 is also connected with the first pin 1, and the cathode of the first diode D1 is connected with the first preset DC power supply.

[0095] In the embodiment, as shown in Figure 6As shown, the anode of the first diode D1 is connected with the base B of the first triode V1, and the anode of the first diode D1 is also connected with the fifth resistor R5 and the first pin 1 respectively, and the cathode of the first diode D1 is connected with the first preset DC power supply, so as to ensure that the voltage at the first pin 1 of the connection terminal X1 is strictly limited in the safety range of not exceeding the first preset DC power supply (namely 12V). When the voltage of the first pin 1 exceeds the first preset DC power supply, the first diode D1 is turned on, and the excessive voltage exceeding the first preset DC power supply is effectively guided and dispersed to the power line of the first preset DC power supply, so that the excessive voltage cannot continue to accumulate at the first pin 1, and the circuit is prevented from being damaged due to the excessively high voltage.

[0096] In an embodiment of the utility model, as shown in Figure 6 As shown, the signal processing unit 122 further comprises: a second diode D2, the anode of the second diode D2 is connected with the door card signal detection port, and the cathode of the second diode D2 is connected to the third preset DC power supply, and the voltage provided by the third preset power supply is less than or equal to the voltage provided by the first preset power supply and the second preset power supply.

[0097] In an embodiment, as shown in Figure 6 As shown, the anode of the second diode D2 is connected to the door card signal detection port, and the cathode of the second diode D2 is connected to the third preset DC power supply, for example, 5V, so as to ensure that the voltage of the door card signal detection port is strictly limited in the safety range of not exceeding the third preset DC power supply. When the voltage of the door card signal detection port exceeds the third preset DC power supply, the second diode D2 is turned on, and the excessive voltage exceeding the third preset DC power supply is effectively guided and dispersed to the power line of the third preset DC power supply, so as to prevent the excessive voltage from continuing to accumulate at the door card signal detection port. Therefore, the second diode D2 not only provides necessary voltage protection for the door card signal detection port, but also enhances the reliability of the entire circuit, ensures that the door card signal detection module 12 can stably operate, and avoids being damaged due to the excessively high voltage.

[0098] According to the air conditioner 10 of the embodiment of the utility model, through the power supply port of the controller 71, the power conversion module 11 can provide certain direct current for the controller 71, the door card signal detection port of the controller 71 is connected with the door card signal detection module 12, when the door card signal detection module 12 outputs the first door card state detection signal, the controller 71 can receive the first door card state detection signal through the door card signal detection port, and according to the first door card state detection signal, the door card state is determined, that is, the door card state is determined as inserting or taking out the door card insertion equipment, and according to the door card state, the running state of the air conditioner 10 is flexibly controlled, so as to improve the accuracy of the door card state detection, meanwhile, through the mutual cooperation of the door card signal detection module 12 and the controller 71, the anti-interference ability of the air conditioner 10 can be improved, and the purpose of reducing the power consumption is achieved.

[0099] In the description of the present specification, 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 utility model. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example.

[0100] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and its equivalents.

Claims

1. An air conditioner, characterized in that, include: A power conversion module, connected to an AC power source, is used to convert the AC power output from the AC power source into DC power suitable for powering the controller. The door card signal detection module is connected to the door card insertion device and is used to detect whether the door card is inserted or removed from the door card insertion device, and output a corresponding first door card status detection signal, which includes a door card insertion signal or a door card removal signal. The controller includes a power supply port and a door card signal detection port; The controller is connected to the power conversion module through the power supply port to receive DC power through the power supply port; The door card signal detection port is connected to the door card signal detection module. The controller receives the first door card status detection signal through the door card signal detection port, determines the door card status based on the first door card status detection signal, and controls the operation status of the air conditioner based on the door card status. The door card status includes inserting the door card insertion device or removing the door card insertion device.

2. The air conditioner according to claim 1, characterized in that, When the voltage value corresponding to the first door card status detection signal is lower than the first pre-stored voltage threshold, the controller determines that the door card status is that it has been inserted into the door card insertion device, and controls the air conditioner to start running. When the voltage value corresponding to the first door card status detection signal is higher than the second voltage threshold stored in it, the controller determines that the door card status is to remove the door card from the insertion device, and controls the air conditioner to stop running and enter a standby state, wherein the first voltage threshold is less than the second voltage threshold.

3. The air conditioner according to claim 1, characterized in that, The access card signal detection module includes: The door card signal detection unit is used to detect whether a door card is inserted or removed from the door card insertion device, and outputs a first voltage signal indicating door card insertion or a second voltage signal indicating door card removal. The signal processing unit, connected to the door card signal detection unit, is used to process the first voltage signal and output the door card insertion signal, or to process the second voltage signal and output the door card removal signal.

4. The air conditioner according to claim 3, characterized in that, The door card signal detection unit includes: a connection terminal and a first switch; The first pin of the connection terminal is connected to the second pin of the connection terminal through the first switch. The first pin is also connected to the signal processing unit, and the second pin is also connected to the ground terminal. When the door card is inserted into the door card insertion device, the first switch is turned on, the first pin and the second pin are connected and connected to the ground terminal to output the first voltage signal; When the door card is removed and inserted into the device, the first switch is turned off, and the first pin is disconnected from the second pin to output the second voltage signal. The voltage value of the first voltage signal is less than the voltage value of the second voltage signal.

5. The air conditioner according to claim 4, characterized in that, The signal processing unit includes: a first transistor, a second transistor, a third transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, and a fifth resistor; The base of the first transistor is connected to the first pin, the base of the first transistor is also connected to the first preset DC power supply through the first resistor, the collector of the first transistor is connected to the first preset DC power supply through the second resistor, the emitter of the first transistor is connected to one end of the third resistor, the emitter of the first transistor is also grounded through the fourth resistor, and the emitter of the first transistor is also connected to the door card signal detection port. The base of the second transistor is connected to the other end of the third resistor, and the emitter of the second transistor is connected to a second preset DC power supply. The voltage provided by the first preset DC power supply is higher than the voltage provided by the second preset DC power supply. The collector of the third transistor is connected to the base of the first transistor through the fifth resistor, and the emitter of the third transistor is grounded.

6. The air conditioner according to claim 5, characterized in that, The door card signal detection port is grounded through the fourth resistor, and the door card signal detection port is also connected to the base of the second transistor through the third resistor.

7. The air conditioner according to claim 6, characterized in that, The signal processing unit includes: a sixth resistor; One end of the sixth resistor is connected to the collector of the second transistor, and the other end of the sixth resistor is connected to the base of the third transistor.

8. The air conditioner according to claim 7, characterized in that, The signal processing unit further includes: The seventh resistor has one end connected between the sixth resistor and the base of the third transistor, and the other end grounded.

9. The air conditioner according to claim 8, characterized in that, The signal processing unit includes: The first diode has its anode connected to the base of the first transistor and the fifth resistor, and its anode is also connected to the first pin. The cathode of the first diode is connected to the first preset DC power supply.

10. The air conditioner according to claim 9, characterized in that, The signal processing unit further includes: The second diode has its anode connected to the door card signal detection port and its cathode connected to a third preset DC power supply. The voltage provided by the third preset DC power supply is less than or equal to the voltage provided by the first preset DC power supply and the second preset DC power supply.

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