CN215062427U

CN215062427U - Air conditioner

Info

Publication number: CN215062427U
Application number: CN202121401961.5U
Authority: CN
Inventors: 刘青健; 王泽�; 于浩
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2021-12-07
Anticipated expiration: 2031-06-23

Abstract

The utility model discloses an air conditioner, include: the box body of the electric box is provided with an air inlet and an air outlet, and the box body is internally provided with an installation cavity communicated with the air inlet and the air outlet; the circuit board is arranged in the mounting cavity, and a main controller is arranged on the circuit board; a wind speed detection module mounted on the circuit board; the wind speed detection module detects a wind speed signal and sends the wind speed signal to the main controller; and the alarm prompting module is connected with the main controller, and the main controller controls the operation of the alarm prompting module according to the received wind speed signal. The utility model discloses an air conditioner is through installing wind speed detection module on the circuit board in electric box for detect the wind speed signal of flowing through the circuit board, main control unit carries out filthy stifled judgement according to received wind speed signal, in time reminds the user to carry out the inside cleanness of electric box through the warning suggestion module, has improved the life of electronic components in the electric box greatly, guarantees the normal reliable operation of air conditioner, practices thrift cost of maintenance, promotes user experience and feels.

Description

Air conditioner

Technical Field

The utility model relates to the technical field of household appliances, especially, relate to an air conditioner.

Background

At present, the installation positions and the working environment of indoor units and outdoor units of multi-split air conditioners are relatively severe, and after the multi-split air conditioners are used for a period of time, a large amount of dust and foreign matters are usually accumulated inside electric boxes of the indoor units and the outdoor units and on the surfaces of circuit boards, so that various abnormal faults such as reduction of the insulation degree of the circuit boards and electronic components, short circuit between circuits, grounding and the like can be caused, and even the danger of electric shock of personnel can be caused. Meanwhile, excessive dust covers the surface of the circuit board for a long time, so that the electrostatic current of the circuit board is too high under the condition of moist air, the electronic components are corroded, and the service life of the electronic components is greatly shortened.

At present, dust and foreign matter detection is carried out on the indoor unit and the outdoor unit electric box in an effective mode temporarily absent in the industry, and only replacement of a whole block of circuit board spare parts is carried out after a fault occurs.

The circuit board in the electric box is directly replaced after the circuit board breaks down, and the mode has high maintenance cost and serious resource waste.

Disclosure of Invention

For solving the problem that does not have effective mode to carry out the dust and detect in the air conditioner electrical box among the prior art, the utility model provides an air conditioner sets up wind speed detection module and detects wind speed signal on the circuit board in the electrical box, and main control unit in time reminds the user to clean according to the operation of wind speed signal control warning suggestion module, has reduced cost of maintenance, has prolonged the life of circuit board.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an air conditioner, include:

the electric box is characterized in that an air inlet and an air outlet are formed in a box body of the electric box, and an installation cavity is formed in the box body; the mounting cavity is communicated with the air inlet and the air outlet;

the circuit board is arranged in the mounting cavity, and a main controller is arranged on the circuit board;

a wind speed detection module mounted on the circuit board; the wind speed detection module detects a wind speed signal and sends the detected wind speed signal to the main controller;

and the alarm prompting module is connected with the main controller, and the main controller controls the operation of the alarm prompting module according to the received wind speed signal.

Further, the wind speed detection module comprises:

the air-gathering shell is provided with an air-gathering inlet facing the air inlet of the electric box and an air-gathering outlet facing the air outlet of the electric box; an air gathering air channel communicated with the air gathering inlet and the air gathering outlet is formed in the air gathering shell;

the wind speed sensor comprises a wind speed sensing chip and a PCB, wherein the wind speed sensing chip is installed on the PCB and is electrically connected with a first interface of the PCB, the first interface of the PCB is electrically connected with a second interface of the PCB, the PCB is installed on the circuit board, and the second interface of the PCB is electrically connected with the main controller;

the wind gathering shell is fixedly connected with the PCB, and the wind speed sensing chip is located in the wind gathering air channel and used for collecting wind speed signals.

Still further, the wind speed detection module further comprises an installation structure, the installation structure comprises an installation groove, and the wind gathering shell and the wind speed sensor are installed in the installation groove;

a front vent hole is formed on the front wall of the mounting groove at a position corresponding to the wind gathering inlet;

a rear vent hole is formed in the groove rear wall of the mounting groove at a position corresponding to the air gathering outlet;

a threading hole is formed in the wall of the mounting groove, and a cable penetrates through the threading hole to connect the second interface of the PCB and the main controller.

Furthermore, the mounting structure further comprises a cover plate, and the cover plate is covered on the notch of the mounting groove and detachably connected with the mounting groove.

Still further, an amplifying circuit is arranged on the circuit board, and the second interface of the PCB board is electrically connected with the main controller through the amplifying circuit.

Further, the amplifying circuit includes: a first operational amplifier, a second operational amplifier, a third operational amplifier;

the second interface of the PCB board comprises a first pin and a second pin;

a first pin of the PCB is connected with a first input end of a first operational amplifier; the second input end of the first operational amplifier is connected with the output end of the first operational amplifier through a first resistor;

a second pin of the PCB is connected with a first input end of a second operational amplifier; the second input end of the second operational amplifier is connected with the output end of the second operational amplifier through a second resistor;

the second input end of the first operational amplifier is connected with the second input end of the second operational amplifier through a third resistor;

the output end of the first operational amplifier is connected with the second input end of the third operational amplifier;

the output end of the second operational amplifier is connected with the first input end of the third operational amplifier;

and the output end of the third operational amplifier is connected with the main controller.

Still further, an amplifying circuit is arranged on the PCB; and the first interface of the PCB is connected with the second interface of the PCB through the amplifying circuit.

Furthermore, a microcontroller is arranged on the PCB; the input end of the microcontroller is connected with the output end of the amplifying circuit;

the second interface of the PCB board comprises a TXD pin and an RXD pin; the output end of the microcontroller is connected with a TXD pin, and the input end of the microcontroller is connected with an RXD pin;

the TXD pin is connected with the input end of the main controller;

the RXD pin is connected with the output end of the main controller.

Still further, a switch circuit is arranged on the circuit board; the output end of the main controller is connected with the control end of the switch circuit; and the direct current power supply is connected with the RXD pin through a switch path of the switch circuit.

Further, the air conditioner further comprises a line controller/remote controller, and the line controller/remote controller is communicated with the main controller.

The technical scheme of the utility model prior art relatively has following technological effect: the utility model discloses an air conditioner is through installing wind speed detection module on the circuit board in electric box for detect the wind speed signal of flowing through the circuit board, main control unit carries out filthy stifled judgement according to received wind speed signal, in time reminds the user to carry out the inside cleanness of electric box through the warning suggestion module, has improved the life of electronic components and circuit board in the electric box greatly, guarantees the normal reliable operation of air conditioner, practices thrift cost of maintenance, promotes user experience and feels.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of an electrical box of an air conditioner according to the present invention;

fig. 2 is a schematic structural diagram of an embodiment of a wind speed detecting module of an air conditioner according to the present invention;

FIG. 3 is a schematic diagram of a back structure of the PCB shown in FIG. 2;

fig. 4 is a schematic structural diagram of another embodiment of the wind speed detecting module of the air conditioner of the present invention;

fig. 5 is a schematic structural view of an installation structure of an air speed detecting module of the air conditioner of the present invention;

fig. 6 is a schematic circuit diagram of an embodiment of an electrical box of an air conditioner according to the present invention;

FIG. 7 is a schematic diagram of the amplification circuit of FIG. 6;

fig. 8 is a schematic circuit diagram of an electrical box of an air conditioner according to another embodiment of the present invention;

fig. 9 is a block diagram of a circuit configuration of a wind speed sensor of the wind speed detection module of fig. 8.

Reference numerals:

1. a circuit board;

2. a wind speed detection module;

2-1, a wind speed sensor; 2-1-1, a wind speed sensing chip; 2-1-2, PCB board;

2-2, a wind gathering shell; 2-2-1, left side plate; 2-2-2, right side panel; 2-2-3, a top plate; 2-2-4, a front panel; 2-2-5, wind gathering inlet;

2-3, mounting a structure;

2-3-1, mounting groove; 2-3-1-1, front vent;

2-3-2, a cover plate;

2-3-3, a cable;

2-3-4, folding; 2-3-4-1, screw holes;

2-3-5, screws;

3. and an alarm prompt module.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of 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, are not to be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The air conditioner performs a refrigeration cycle and a heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator, and control is performed by a controller, achieving flow direction control of refrigerant, opening degree control of the expansion valve, and the like. The refrigeration cycle and the heating cycle include a series of processes involving compression, condensation, expansion, and evaporation, and supply refrigerant to air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the outdoor unit or the indoor unit of the air conditioner.

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

The first embodiment,

The air conditioner of the embodiment comprises an electric box, a circuit board 1, a wind speed detection module 2, an alarm prompt module 3 and the like, and is shown in fig. 1.

The box body of the electric box is provided with an air inlet and an air outlet, and the inside of the box body is provided with an installation cavity; the mounting cavity is communicated with the air inlet and the air outlet; the mounting cavity is used for mounting the circuit board 1 and other electronic components. Wind enters the installation cavity from the air inlet of the electric box and then is blown out from the air outlet of the electric box, so that heat of all components in the installation cavity is dissipated.

The circuit board 1 is installed in a mounting cavity of the electrical box, and a main controller is arranged on the circuit board 1.

A wind speed detection module 2 mounted on the circuit board 1; the wind speed detection module 1 detects a wind speed signal and sends the detected wind speed signal to the main controller.

And the alarm prompt module 3 is connected with the main controller, and the main controller controls the operation of the alarm prompt module according to the received wind speed signal. In this embodiment, the alarm prompting module is a digital display tube.

The wind speed on the surface of the circuit board is related to the accumulation of dust and foreign matters on the surface of the circuit board. If the dust and foreign matters on the surface of the circuit board are seriously accumulated, the wind speed flowing through the surface of the circuit board is small; if the surface of the circuit board is clean, the wind speed flowing through the surface of the circuit board is large. Therefore, the dirty blockage condition of the surface of the circuit board can be judged according to the wind speed flowing through the surface of the circuit board.

The wind speed detection module 2 detects the wind speed signal flowing through the surface of the circuit board 1 and sends the wind speed signal to the main controller, the main controller carries out A/D conversion on the received wind speed signal to generate a wind speed value, the wind speed value is compared with a threshold value and is subjected to filth blockage judgment, if the wind speed value is smaller than the threshold value, the surface of the circuit board is filth blockage is described, the main controller outputs a control signal to the alarm prompting module, the alarm prompting module is controlled to give an alarm prompt, a user is reminded of cleaning the inside of the electric box in time, the service lives of electronic components and circuit boards in the electric box are greatly prolonged, normal and reliable operation work of the air conditioner is guaranteed, maintenance cost is saved, and user experience is improved.

The air conditioner of this embodiment, through installation wind speed detection module 2 on circuit board 1 in the electric box for detect the wind speed signal of flowing through circuit board 1, main control unit carries out filth and blocks up the judgement according to the wind speed signal that receives, in time reminds the user to carry out the inside cleanness of electric box through warning suggestion module 3.

The air conditioner of this embodiment can effectively detect the dirty stifled degree of dust foreign matter on circuit board surface in the electric box to remind the user in time to clean, improve electronic components's life, practice thrift the cost of maintenance of changing circuit board spare part, guarantee the normal reliable operation work of air conditioner.

The comparison of the wind speed value with the threshold value can be realized by a voltage comparator inside the main controller. For example, the positive input end of the voltage comparator is connected with the output end of the A/D conversion circuit and receives the wind speed value; the negative input end of the voltage comparator is connected with a threshold value; when the wind speed value is smaller than the threshold value, the voltage comparator outputs a low level; when the wind speed value is larger than the threshold value, the voltage comparator outputs a high level to control the alarm prompt module to carry out alarm prompt.

In the present embodiment, the wind speed detection module 2 includes a wind collecting case 2-2 and a wind speed sensor 2-1, as shown in fig. 2.

The air gathering shell 2-2 is provided with an air gathering inlet 2-2-5 facing the air inlet of the electric box and an air gathering outlet facing the air outlet of the electric box; an air-gathering air channel communicated with an air-gathering inlet 2-2-5 and an air-gathering outlet is formed in the air-gathering shell 2-2. The installation position of the wind gathering shell 2-2 needs to ensure that the direction of the wind gathering inlet 2-2-5 is consistent with the flowing wind direction in the electric box, so that the wind speed detection result is more accurate and effective.

The wind speed sensor 2-1 comprises a wind speed sensing chip 2-1-1 and a PCB 2-1-2, and the PCB 2-1-2 is provided with a first interface and a second interface; the wind speed sensing chip 2-1-1 is installed on the PCB 2-1-2 and electrically connected with a first interface of the PCB 2-1-2, the first interface of the PCB 2-1-2 is electrically connected with a second interface of the PCB 2-1-2, the PCB 2-1-2 is installed on the circuit board, and the second interface of the PCB 2-1-2 is electrically connected with the main controller. The wind speed sensing chip 2-1-1 collects wind speed signals and sends the collected wind speed signals to the main controller on the circuit board through the PCB 2-1-2.

The wind gathering shell 2-2 is fixedly connected with the PCB 2-1-2, and the wind speed sensing chip 2-1-1 is positioned in the wind gathering air channel.

Specifically, the wind gathering shell 2-2 is provided with a left side plate 2-2-1, a right side plate 2-2-2, a top plate 2-2-3, a front panel 2-2-4 and a rear panel; the bottom end of the left side plate 2-2-1 and the bottom end of the right side plate 2-2-2 are fixed with the front face of the PCB 2-1-2, the top end of the left side plate 2-2-1 and the top end of the right side plate 2-2-2 are fixed with the top plate 2-2-3, the front end of the left side plate 2-2-1, the front end of the right side plate 2-2-2 and the front end of the top plate 2-2-3 are fixed with the front panel 2-2-4, the rear end of the left side plate 2-2-1, the rear end of the right side plate 2-2-2 and the rear end of the top plate 2-2-3 are fixed with the rear panel. The front panel 2-2-4 faces the air inlet of the electric box, the rear panel faces the air outlet of the electric box, the front panel 2-2-4 is provided with an air gathering inlet 2-2-5, and the rear panel is provided with an air gathering outlet.

Wind enters the box body installation cavity from the air inlet of the electric box, then enters the wind gathering air channel through the wind gathering inlet 2-2-5, flows through the wind speed sensing chip 2-1-1, then flows out from the wind gathering outlet, and finally flows out of the box body installation cavity from the air outlet of the electric box. The wind gathering shell 2-2 plays a role in gathering wind, so that the wind speed sensing chip 2-1-1 can conveniently acquire wind speed signals, and the accuracy of wind speed detection is improved.

The PCB 2-1-2 has the functions of fixedly mounting the wind speed sensing chip 2-1-1 and the wind gathering shell 2-2, and the first interface and the second interface of the PCB 2-1-2 have the functions of electrically connecting the wind speed sensing chip 2-1-1 with the main controller. The wind speed sensing chip 2-1-1 senses a wind speed signal, transmits the sensed wind speed signal to a first interface of the PCB 2-1-2, then transmits the wind speed signal to a second interface of the PCB 2-1-2, and transmits the wind speed signal to the main controller through the second interface.

The wind speed sensing chip 2-1-1 is installed on the front surface of the PCB 2-1-2, the first interface is arranged on the front surface of the PCB 2-1-2, and the second interface is arranged on the back surface of the PCB 2-1-2, as shown in FIGS. 2 and 3; or, the wind speed sensing chip 2-1-1, the first interface and the second interface are all arranged on the front surface of the PCB 2-1-2, as shown in fig. 4.

In this embodiment, in order to facilitate installation and fixation of the wind speed detection module 2, the wind speed detection module 2 further includes an installation structure 2-3, as shown in fig. 5, the installation structure 2-3 includes an installation groove 2-3-1, and the wind gathering shell 2-2 and the wind speed sensor 2-1 are installed in the installation groove 2-3-1; the mounting structure 2-3 is mounted on a circuit board or other device where wind speed is to be sensed.

A front vent hole 2-3-1-1 is formed on the front wall of the mounting groove 2-3-1 at a position corresponding to the wind gathering inlet 2-2-5, and wind enters the wind gathering inlet 2-2-5 through the front vent hole 2-3-1-1.

A rear vent hole is formed in the position, corresponding to the wind gathering outlet, on the groove rear wall of the mounting groove 2-3-1, and wind flows to the rear vent hole through the wind gathering outlet.

The groove wall (the groove front wall or the groove rear wall) of the mounting groove 2-3-1 is provided with a threading hole for threading the cable 2-3-3, and the cable 2-3-3 penetrates through the threading hole and is used for connecting the second interface of the PCB 2-1-2 with the main controller.

By designing the mounting structure 2-3, the wind speed detection module is convenient to mount, the application range of the wind speed detection module is expanded, and the wind speed sensor 2-1 and the wind gathering shell 2-2 are convenient to protect.

In order to further improve the safety of the wind speed sensor 2-1 and the wind gathering shell 2-2, the mounting structure 2-3 further comprises a cover plate 2-3-2, the cover plate 2-3-2 covers the notch of the mounting groove 2-3-1, the cover plate 2-3-2 is detachably connected with the mounting groove 2-3-1, for example, the cover plate 2-3-2 is connected with the mounting groove 2-3-1 through a screw 2-3-5, and the wind speed sensor 2-1 and the wind gathering shell 2-2 are firmly mounted in the mounting groove 2-3-1.

The edge of the notch of the mounting groove 2-3-1 is provided with a folded edge 2-3-4, and the folded edge 2-3-4 is provided with a screw hole 2-3-4-1, so that the wind speed detection module can be conveniently mounted on a circuit board or other equipment needing to detect wind speed.

As a preferable design scheme of this embodiment, an amplifying circuit is disposed on the circuit board 1, and the second interface of the PCB 2-1-2 is electrically connected to the main controller through the amplifying circuit. The wind speed signal transmitted by the PCB 2-1-2 is amplified through the amplifying circuit, so that the accuracy of filth blockage judgment can be improved. For example, referring to fig. 6, the wind speed sensor 2-1 is an MEMS (micro electro mechanical system) wind speed sensor, pins pin 2+ and pin 1+ of the second interface of the PCB 2-1-2 of the wind speed sensor 2-1 are respectively connected to pins IN + and IN of an amplifying circuit, an output pin OUT of the amplifying circuit is connected to the main controller, and a signal output by the wind speed sensor 2-1 is amplified by the amplifying circuit and then transmitted to the main controller.

In the present embodiment, the amplifying circuit includes a first operational amplifier U1A, a second operational amplifier U1B, and a third operational amplifier U1C, as shown in fig. 7. The second interface of the PCB board 2-1-2 of the wind speed sensor 2-1 comprises a first pin die 2+ and a second pin die 1+, see fig. 6.

A first pin 2+ of the PCB is connected with a first input end of a first operational amplifier U1A; a second input end of the first operational amplifier U1A is connected with the output end of the first operational amplifier U1A through a first resistor R6; a second pin 1+ of the PCB is connected with a first input end of a second operational amplifier U1B; a second input end of the second operational amplifier U1B is connected with the output end of the second operational amplifier U1B through a second resistor R10; the second input end of the first operational amplifier U1A and the second input end of the second operational amplifier U1B are connected through a third resistor R8; the output end of the first operational amplifier U1A is connected with the second input end of the third operational amplifier U1C through a resistor R4; the output end of the second operational amplifier U1B is connected with the first input end of the third operational amplifier U1C through a resistor R15; the output terminal of the third operational amplifier U1C is connected to the main controller.

By arranging the three operational amplifiers, the wind speed signal sensed by the wind speed sensor 2-1 is amplified, so that the main controller obtains a stably amplified signal, and the accuracy of filth blockage judgment can be improved.

In this embodiment, the air conditioner further includes a line controller/remote controller, and the line controller/remote controller communicates with the main controller through the HomeBus communication loop. And the main controller judges filth blockage according to the received wind speed signal, outputs a control signal to the wire controller/remote controller, and controls the wire controller/remote controller to display so as to remind a user of cleaning the inside of the electric box in time. Therefore, the main controller displays the dirty blockage judgment result through the nixie tube and transmits the dirty blockage judgment result to an external wire controller/remote controller through the HomeBus communication loop for displaying and reminding.

Example II,

The air conditioner of the present embodiment is different from the first embodiment in that: an amplifying circuit and a microcontroller are arranged on the PCB 2-1-2 of the wind speed sensor 2-1 of the wind speed detection module 2, as shown in fig. 8 and 9.

In order to improve the integration level of the wind speed sensor 2-1, an amplifying circuit is arranged on a PCB 2-1-2 of the wind speed sensor 2-1; the first interface of the PCB 2-1-2 is connected with the second interface of the PCB 2-1-2 through the amplifying circuit. The wind speed sensing chip 2-1-1 transmits the sensed wind speed signal to a first interface of the PCB 2-1-2, then transmits the wind speed signal to an amplifying circuit for signal amplification, and the amplified wind speed signal is transmitted to a second interface of the PCB 2-1-2 and transmitted to the main controller through the second interface. The sensed wind speed signal is amplified through the amplifying circuit, so that the accuracy of the visceral congestion judgment can be improved.

In order to improve the intelligence of the wind speed sensor 2-1, a microcontroller is also arranged on the PCB 2-1-2 of the wind speed sensor 2-1, a first interface is connected with the input end of the amplifying circuit, and the input end of the microcontroller is connected with the output end of the amplifying circuit; the second interface of the PCB comprises a TXD pin and an RXD pin; the output end of the microcontroller is connected with the TXD pin, and the input end of the microcontroller is connected with the RXD pin; the TXD pin is connected with the input end of the main controller; the RXD pin is connected with the output end of the main controller.

The wind speed sensor 2-1 is integrated with a wind speed sensing chip 2-1-1, an amplifying circuit and a microcontroller, the wind speed sensing chip 2-1-1 transmits a sensed wind speed signal to a first interface of the PCB 2-1-2, then transmits the wind speed signal to the amplifying circuit for signal amplification, the amplified signal is transmitted to the microcontroller, the microcontroller processes the received signal and transmits the processed signal to a TXD pin of a second interface, and the processed signal is transmitted to the main controller through the TXD pin.

A control signal sent by the main controller is transmitted to the RXD pin of the second interface, and is transmitted to the microcontroller through the RXD pin, and the microcontroller operates according to the received signal, as shown in fig. 8 and 9.

In order to facilitate the control of the main controller on the wind speed sensor 2-1, a switch circuit is arranged on the circuit board 1; the output end of the main controller is connected with the control end of the switch circuit; the direct current power supply is connected with the RXD pin of the second interface through a switch path of the switch circuit. The main controller controls the on-off of the switch circuit, so that the level of an RXD pin of a second interface of the PCB 2-1-2 is controlled, and the micro controller realizes corresponding functions according to the level.

In the embodiment, in order to further facilitate the control of the main controller to the wind speed sensor 2-1, the switching circuit comprises a first switching tube Q1 and a second switching tube Q2; the output end of the main controller is connected with the control end of a first switch tube Q1, one end of a switch path of the first switch tube Q1 is grounded, and the other end of the switch path of the first switch tube Q1 is connected with a direct-current power supply through a first pull-up resistor R2; the other end of the switching path of the first switching tube Q1 and the connection node of the first pull-up resistor R2 are connected with the control end of the second switching tube Q2, one end of the switching path of the second switching tube Q2 is grounded, and the other end of the switching path of the second switching tube Q2 is connected with the direct-current power supply through the second pull-up resistor R3; the other end of the switching path of the second switching tube Q2 and the connection node of the second pull-up resistor R3 are connected to the RXD pin of the second interface. In the present embodiment, Q1 and Q2 are both NPN transistors.

When the output end of the main controller sends out a high level, the Q1 is conducted, the control end of the Q2 is in a low level, the Q2 is turned off, and the RXD pin of the second interface is pulled to be in a high level.

When the output end of the main controller sends out low level, the Q1 is turned off, the control end of the Q2 is high level, the Q2 is turned on, and the RXD pin of the second interface is pulled to be low level.

The TXD pin of the second interface is connected with the cathode of the LED1, and the anode of the LED1 is connected with the DC power supply through the current limiting resistor R4. When the TXD pin of the second interface goes low, the LED1 is on; when the TXD pin of the second interface goes high, the LED1 goes off; thus, the LED1 is used to indicate whether data transfer is occurring between the TXD pin of the second interface and the host controller.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An air conditioner, comprising:

2. The air conditioner according to claim 1, wherein: the wind speed detection module comprises:

3. The air conditioner according to claim 2, wherein: the wind speed detection module further comprises an installation structure, the installation structure comprises an installation groove, and the wind gathering shell and the wind speed sensor are installed in the installation groove;

4. The air conditioner according to claim 3, wherein: the mounting structure further comprises a cover plate, and the cover plate is covered on the notch of the mounting groove and detachably connected with the mounting groove.

5. The air conditioner according to claim 2, wherein: the circuit board is provided with an amplifying circuit, and the second interface of the PCB is electrically connected with the main controller through the amplifying circuit.

6. The air conditioner according to claim 5, wherein: the amplification circuit includes: a first operational amplifier, a second operational amplifier, a third operational amplifier;

the second interface of the PCB board comprises a first pin and a second pin;

7. The air conditioner according to claim 2, wherein: an amplifying circuit is arranged on the PCB; and the first interface of the PCB is connected with the second interface of the PCB through the amplifying circuit.

8. The air conditioner according to claim 7, wherein: the PCB is also provided with a microcontroller; the input end of the microcontroller is connected with the output end of the amplifying circuit;

the TXD pin is connected with the input end of the main controller;

the RXD pin is connected with the output end of the main controller.

9. The air conditioner according to claim 8, wherein: the circuit board is provided with a switch circuit; the output end of the main controller is connected with the control end of the switch circuit; and the direct current power supply is connected with the RXD pin through a switch path of the switch circuit.

10. The air conditioner according to any one of claims 1 to 9, wherein: the air conditioner also comprises a line controller/remote controller, and the line controller/remote controller is communicated with the main controller.