Automatic start-stop control device for air compressor of car washer

Abstract

The utility model belongs to the technical field of car washers, and particularly relates to a car washer air compressor automatic start-stop control device which comprises a car washer, a car detector is arranged at one end of the car washer and used for detecting whether a car exists in the car washer or not, and an air compressor is arranged at the other end of the car washer and used for detecting whether the car exists in the car washer or not. The air compressor comprises an air storage tank and a motor, a pressure sensor is arranged at an outlet of the air storage tank and used for monitoring the pressure value of the air storage tank in real time, and the air compressor further comprises a controller used for receiving signals of the pressure sensor and a vehicle detector. According to the scheme, invalid starting and stopping are effectively reduced, and frequent starting of the air compressor caused by chronic air leakage is avoided through double-condition judgment of pressure and the vehicle state; meanwhile, the service life of equipment is prolonged, the action times of components such as a motor, a contactor and a valve are reduced, and the estimated service life is prolonged by 30%-50%.

Description

Technical Field

[0001] This utility model belongs to the technical field of automatic car wash machines, specifically relating to an automatic start-stop control device for the air compressor of a car wash machine. Background Technology

[0002] Existing car wash air compressor control devices typically use a single vehicle sensor to trigger start / stop. The logic is that when a vehicle enters the car wash, the sensor detects the vehicle signal and starts the air compressor, then shuts it off 15 minutes after the wash ends. The drawbacks are: if there is a chronic leak in the air system (such as aging air pipes or loose connections), the air compressor's tank pressure will continuously drop, causing the compressor to frequently start to replenish pressure even when there are no vehicles, leading to fatigue damage to components such as the motor and valves. Furthermore, current technology cannot distinguish between "normal car wash air usage" and "chronic leaks," resulting in energy waste and shortened equipment lifespan. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide an automatic start-stop control device for the air compressor of a car wash machine. By linking pressure detection with vehicle status, the air compressor is started only when there is a vehicle and pressure replenishment is required, avoiding ineffective start-stop caused by chronic air leakage, extending equipment life and reducing energy consumption.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An automatic start / stop control device for an air compressor in a car wash machine includes a car wash machine. A vehicle detector is installed at one end of the car wash machine to detect whether there is a vehicle inside the car wash machine. An air compressor is installed at the other end of the car wash machine. The air compressor consists of an air tank and a motor. A pressure sensor is installed at the outlet of the air tank to monitor the pressure value of the air tank in real time.

[0006] It also includes a controller for receiving signals from pressure sensors and vehicle detectors.

[0007] Furthermore, the controller is model FX3U-16MR PLC.

[0008] The present invention relates to an automatic start / stop control device for an air compressor in a car wash machine, the advantages of which are:

[0009] 1. Reduce unnecessary start-stop cycles: By judging based on both pressure and vehicle status, avoid frequent compressor starts caused by chronic air leakage;

[0010] II. Extend equipment lifespan: Reduce the number of operations of components such as motors, contactors, and valves, and increase the estimated lifespan by 30% to 50%;

[0011] III. Energy saving and environmental protection: Reduces idle time and energy consumption by about 20%. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of an automatic start / stop control device for an air compressor in a car wash machine according to this utility model.

[0013] Figure 2 This is the logic flowchart of the controller of this utility model. Detailed Implementation

[0014] The present invention will be described in detail below with reference to specific implementation examples. The following implementation examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way.

[0015] like Figure 1 , Figure 2 As shown, this utility model relates to an automatic start-stop control device for an air compressor in a car wash machine, including a car wash machine 1. A vehicle detector 2 is installed at one end of the car wash machine 1. The vehicle detector 2 is a photoelectric sensor with a detection distance of 5-10m, used to detect whether there is a vehicle inside the car wash machine. An air compressor is installed at the other end of the car wash machine 1. The air compressor consists of an air tank 5 and a motor 6. A pressure sensor 3 is installed at the outlet of the air tank 5. The pressure sensor has a range of 0-1.6MPa and outputs an analog signal for real-time monitoring of the air tank pressure value.

[0016] It also includes a controller 7 for receiving signals from pressure sensor 3 and vehicle detector 2. The controller 7 is placed next to the car wash machine 1 and is an FX3U-16MR PLC.

[0017] During operation, the controller 7 executes the following logic:

[0018] Start-up conditions: The air compressor will start when both of the following conditions are met simultaneously:

[0019] a. The vehicle detection sensor signal is "vehicle present";

[0020] b. The pressure in the gas storage tank is lower than the set threshold (e.g., 0.6 MPa).

[0021] Stop conditions: The air compressor shall be stopped when any of the following conditions are met:

[0022] c. The vehicle detection sensor signal is "no vehicle" for 15 minutes;

[0023] d. The pressure in the gas storage tank reaches the upper limit (e.g., 1.2 MPa). Example 1

[0024] The controller reads the pressure value (P) and vehicle status (V) in real time.

[0025] If V=1 (vehicle present) and P<0.6MPa, start the air compressor;

[0026] If V=0 (no vehicle) for 15 minutes or P≥1.2MPa, stop the air compressor. Example 2

[0027] Add pressure drop rate judgment to controller 7: If the pressure drop rate exceeds the set value (e.g., 0.05MPa / min) when there is no vehicle, a leak alarm can be triggered and the fault location can be recorded.

[0028] The above specific embodiments are used to explain and illustrate the present utility model, and are not intended to limit the present utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims shall fall within the protection scope of the present utility model.

Claims

1. A car washer air compressor automatic start-stop control device, characterized in that Including car washing machine (1), one end of the car washing machine (1) is provided with a vehicle detector (2), the vehicle detector (2) is used for detecting whether there is a vehicle in the car washing machine, the other end of the car washing machine (1) is provided with an air compressor, the air compressor comprises a gas storage tank (5) and a motor (6), the outlet of the gas storage tank (5) is provided with a pressure sensor (3), the pressure sensor (3) is used for monitoring the pressure value of the gas storage tank in real time. It also includes a controller (7) for receiving signals of the pressure sensor (3) and the vehicle detector (2).

2. The automatic start-stop control device for a car washer air compressor as claimed in claim 1, characterized in that The model of the controller (7) is FX3U-16MR PLC.

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