Working method of an air compressor control circuit with a delay selection function

Abstract

The present invention discloses an air compressor control circuit with a delay selection function, which includes a controller, an electronic air compressor, a solenoid valve, a reset switch, a delay relay, a pressure switch, a power supply, and an ignition switch. It includes an electronic air compressor control circuit and a delay control circuit. The controller, the electronic air compressor, the pressure switch, the power supply, and the ignition switch form the electronic air compressor control circuit; the power supply, the reset switch, the delay relay, and the solenoid valve form the delay control circuit; it further includes a water temperature detection module, and the water temperature detection module is connected to the delay relay. The present invention can reasonably select the delay intervals for harvesting different crops, with a fast cleaning speed and high efficiency. Users can carry out cleaning work without stopping the machine, ensuring the steady progress of the harvesting work. At the same time, using a control circuit to replace manual cleaning reduces the labor intensity of users for cleaning.

Description

Technical Field

[0001] The present invention belongs to the technical field of harvesters, and particularly relates to a working method of an air compressor control circuit with a delay selection function. Background Art

[0002] In non-road fields such as wheat harvesters and corn harvesters, during the harvesting operation, sundries such as flocs and shredded leaves will float in the air. Because harvesters usually operate while moving, during the operation, after coming into contact with the sundries, since the harvester needs to cool corresponding components (such as the water tank) during operation, fans and the like are usually equipped for blowing and cooling. Under the movement of the harvester and the blowing of the fans, sundries such as flocs and leaves of crops will be adsorbed on the surface of the engine water tank protective cover, blocking the holes of the protective cover and affecting the flow of air. After too much sundries accumulate, the heat in the water tank cannot escape, resulting in poor heat dissipation of the water tank, and then causing a high water temperature, and ultimately leading to the shutdown of the harvesting system. To avoid overheating of the water temperature, users need to intermittently stop the vehicle to clean the sundries adsorbed on the protective cover, which takes a long time, affects the harvesting efficiency, and the labor intensity of users is high during long-term cleaning. Summary of the Invention

[0003] The purpose of the present invention is to provide a working method of an air compressor control circuit with a delay selection function to solve the problems that when the existing harvester operates while moving, the protective cover of the water tank is blocked by sundries, and manual cleaning takes a long time, affects the harvesting efficiency, and the labor intensity of users is high during long-term cleaning.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A working method of an air compressor control circuit with a delay selection function includes a controller, an electronic air compressor, a solenoid valve, a reset switch, a delay relay, a pressure switch, a power supply, and an ignition switch, and includes an electronic air compressor control circuit and a delay control circuit. The controller, the electronic air compressor, the pressure switch, the power supply, and the ignition switch form the electronic air compressor control circuit; the power supply, the reset switch, the delay relay, and the solenoid valve form the delay control circuit; it further includes a water temperature detection module, and the water temperature detection module is connected to the delay relay.

[0006] The working method includes the following steps:

[0007] Step 1: First, press the pressure switch. When the pressure switch is closed, power is supplied to the ignition switch. After power-on, the electronic air compressor starts to work and inflates the air tank.

[0008] Step 2: A number of set delay intervals are set in the delay relay, and the delay intervals are selected according to requirements.

[0009] Step 3: The water temperature detection module monitors the water temperature in real time. When the water temperature is higher than the set value, an over-temperature alarm is started. After the alarm, the delay interval is selected. Only when the system interval reaches the selected delay interval, the solenoid valve is powered on, and the system performs the air source blowing operation for this time. If the delay interval is not reached, the solenoid valve is not powered on, and the air source blowing operation is not performed.

[0010] Further, when the pressure in the air tank exceeds the safety pressure, the pressure switch trips.

[0011] Further, the delay interval includes the first delay interval to the nth delay interval, calculated in minutes, with a minimum interval limit of 4 minutes. If it is less than 4 minutes, the delay interval needs to be set manually.

[0012] Further, the water temperature is the temperature of the water tank, and the alarm threshold is 90 - 95°.

[0013] The beneficial effects achieved by the present invention are as follows:

[0014] By setting and selecting the delay interval, a timer is set for the control circuit, and an interval is set for the working time of the air source, limiting the working frequency of the electronic air compressor system. It can reasonably match the time intervals of the air source work in each segmented market, improve the reliability of the hardware and software of the electronic air compressor system and the entire circuit system, and reduce the failure rate of the hardware and software of the entire circuit system. At the same time, it meets the requirements of vehicles with the function of harvesting multiple crops or vehicles with partial modification qualifications. Different delay intervals can be reasonably selected for different crop harvests, with a fast cleaning speed and high efficiency. Users can perform cleaning work without stopping the machine, ensuring the steady progress of the harvesting work. At the same time, the control circuit is used to replace manual cleaning, reducing the labor intensity of users. Description of the Drawings

[0015] In the drawings:

[0016] Figure 1 is the circuit diagram of the present invention.

[0017] Reference numerals: 1, electronic air compressor control circuit; 2, controller; 3, electronic air compressor; 4, power supply; 5, reset switch; 6, first delay interval; 7, water temperature sensor; 8, second delay interval; 9, first application scenario; 10, second application scenario; 11, third application scenario; 12, fourth application scenario; 13, third delay interval; 14, fourth delay interval; 15, delay relay; 16, solenoid valve; 17, delay control circuit; 18, pressure switch; 19, ignition switch. Detailed Embodiments

[0018] The following is a specific description in combination with specific embodiments.

[0019] The present invention will be further described in detail below in conjunction with specific embodiments. It should be emphasized that the following description is merely exemplary and not intended to limit the scope of the present invention and its applications.

[0020] As Figure 1 shown, a working method of an air compressor control circuit with a delay selection function includes a controller 2, an electronic air compressor 3, a solenoid valve 16, a reset switch 7, a time delay relay 15, a pressure switch 18, a power supply 4, and an ignition switch 19. The above components constitute an electronic air compressor control circuit 1 and a delay control circuit 17. The controller 2, the electronic air compressor 3, the pressure switch 18, the power supply 4, and the ignition switch 19 constitute the electronic air compressor control circuit 1. Among them, the power supply terminal of the controller 2 is connected to the power supply 4, the signal input terminals of the controller 2 are respectively connected to the pressure switch 18 and the ignition switch 19, and the signal output terminal of the controller 2 is connected to the electronic air compressor 3, specifically to the drive motor of the electronic air compressor 3. The power supply 4, the reset switch 7, the time delay relay 6, and the solenoid valve 16 constitute the delay control circuit 17. Among them, the positive terminal of the power supply 4 is connected to the reset switch 5, and the reset switch 5 is sequentially connected in series with the time delay relay 15 and the solenoid valve 16. The solenoid valve 16 is finally connected to the negative terminal of the power supply 4 and the signal input terminal of the controller 2 respectively. It also includes a water temperature detection module, and the water temperature detection module includes a water temperature sensor 7. The water temperature sensor 7 is arranged in the water tank, and the water temperature detection module is connected to the time delay relay 15.

[0021] The working method provided in this embodiment includes the following steps:

[0022] Step 1: First, press the pressure switch 18. When the pressure switch 18 is closed, power is supplied to the ignition switch 19. After power-on, the electronic air compressor 3 starts to work and inflates the air tank. When the pressure in the air tank exceeds the safety pressure, the pressure switch 18 trips. When performing the air source blowing operation, the compressed gas in the air tank is used for blowing. If inflation is required again, press the pressure switch 18 to close it.

[0023] Step 2: Several set delay intervals are set in the time delay relay 15, and the delay intervals are selected according to requirements.

[0024] Step 3: The water temperature detection module continuously monitors the water temperature of the water tank. When the water temperature is higher than the set value, an over-temperature alarm is started. The alarm threshold can be set to 90 - 95 °C. After the alarm, the delay interval is selected. Only when the system interval reaches the selected delay interval, the solenoid valve 16 is powered on, and the system performs the air source blowing operation for this time; if the delay interval is not reached, the solenoid valve is not powered on, and the air source blowing operation is not performed.

[0025] The delay intervals include the first delay interval to the nth delay interval. In this embodiment, the first delay interval is 6, the second delay interval is 8, the third delay interval is 13, and the fourth delay interval is 14. Correspondingly, the first delay interval 6 to the fourth delay interval 14 respectively correspond in sequence to the first application scenario 9, the second application scenario 10, the third application scenario 11, and the fourth application scenario 12. The delay intervals serve the purpose of timing and can be selected after verification according to different application scenarios. For example, a wheat harvester belongs to the first application scenario, and the first delay interval is matched for the blowing operation during the harvesting work; a corn harvester belongs to the second application scenario, and the second delay interval is matched for the blowing operation during the harvesting work; a rice harvester belongs to the third application scenario, and the third delay interval is matched for the blowing operation during the harvesting work, and so on.

[0026] The delay intervals are calculated in minutes, and the minimum interval limit value is 4 minutes. If it is less than 4 minutes, the delay interval needs to be set manually.

Claims

1. A working method of an air compressor control circuit with a delay selection function, characterized in that: It includes an air compressor control circuit with a delay selection function. The control circuit includes a controller, an electronic air compressor, a solenoid valve, a reset switch, a time-delay relay, a pressure switch, a power supply, and an ignition switch. Among them, it also includes an electronic air compressor control circuit and a delay control circuit. The controller, the electronic air compressor, the pressure switch, the power supply, and the ignition switch form the electronic air compressor control circuit; the power supply, the reset switch, the time-delay relay, and the solenoid valve form the delay control circuit; it also includes a water temperature detection module, and the water temperature detection module is connected to the time-delay relay; The working method includes the following steps: Step 1: First, press the pressure switch. When the pressure switch is closed, power is supplied to the ignition switch. After power-on, the electronic air compressor starts to work and inflates the air tank; Step 2: Several set delay intervals are set in the time-delay relay, and the delay intervals are selected according to requirements; Step 3: The water temperature detection module monitors the water temperature in real time. When the water temperature is higher than the set value, an over-temperature alarm is started. After the alarm, the delay interval is selected. Only when the system interval reaches the selected delay interval, the solenoid valve is powered on, and the system performs the air source blowing work for this time; if the delay interval is not reached, the solenoid valve is not powered on, and the air source blowing work is not performed; Among them, when the air tank pressure exceeds the safety pressure, the pressure switch trips; The delay intervals include the first delay interval to the nth delay interval, calculated in minutes, and the minimum interval limit is 4 minutes. If it is less than 4 minutes, the delay interval needs to be set manually; The water temperature is the water tank temperature, and the alarm threshold is 90 - 95 °C.

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