Vacuum pumping detection device for air conditioner

Abstract

The utility model discloses an air conditioner vacuumizing detection device, which relates to the technical field of air conditioner detection and comprises a suspension chain and a detection system support, the detection system support is suspended on a hook of the suspension chain, and one end of the suspension chain far away from the detection system support is fixedly connected to a trolley and a power mechanism through screws. The lower end of the detection system support is fixedly connected with an electric control box through screws, and the electric control box is provided with a touch screen, a start button, a stop button, a power switch, a PLC, a vacuum pressure acquisition system, a network system, a vacuum pump control system, a pressure maintaining electromagnetic valve, an alarm system, a PC and a software control system. And meanwhile, the system is provided with an unqualified alarm mechanism, if the detection is unqualified, prompt can be immediately given, the phenomenon of missing detection possibly occurring during manual detection is avoided, and it is ensured that each link can be executed according to a set standard.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning detection, in particular to an air-conditioning vacuum detection device. Background Art

[0002] With the improvement of living standards and the impact of climate change, air conditioners have become indispensable equipment in homes and commercial environments. During the air conditioner production process, in order to avoid product quality problems caused by insufficient vacuum, each outdoor unit undergoes effective vacuum testing before leaving the factory.

[0003] Traditional detection methods are mostly manual detection with low efficiency, which is difficult to meet the rapid needs of modern production lines. At the same time, manual detection is easily affected by human factors, resulting in inaccurate detection results, which in turn affects the reliability and consistency of the detection. Therefore, an air-conditioning vacuum detection device is proposed to solve the above problems. Utility Model Content

[0004] In order to solve the above technical problems, an air-conditioning vacuum detection device is provided. This technical solution solves the problem that the traditional detection method proposed in the above background technology is mostly manual detection with low efficiency, which is difficult to meet the rapid needs of modern production lines. At the same time, manual detection is easily affected by human factors, resulting in inaccurate detection results, which in turn affects the reliability and consistency of the detection.

[0005] In order to achieve the above purpose, the technical solution adopted by this utility model is:

[0006] An air-conditioning vacuum detection device comprises a suspension chain and a detection system bracket, wherein the detection system bracket is suspended on a hook of the suspension chain, and one end of the suspension chain away from the detection system bracket is fixedly connected to a trolley and a power mechanism by screws, and the lower end of the detection system bracket is fixedly connected to an electric control box by screws, and the electric control box is provided with a touch screen, a start button, a stop button, a power switch, a PLC, a vacuum pressure acquisition system, a network system, a vacuum pump control system, a pressure maintaining solenoid valve, an alarm system, a PC and a software control system.

[0007] Preferably, the touch screen includes 5 RS232 or 485 interfaces, 2 USB HOSTs, 1 USB debugging port and 1 network port.

[0008] Preferably, the electric control box, the PC and the software control system adopt, but are not limited to, wireless networking with a router or wired networking with a switch.

[0009] Preferably, the communication connection between the touch screen, start button, stop button, power switch, PLC, vacuum pressure acquisition system, network system, vacuum pump control system, pressure maintaining solenoid valve, alarm system and PC and software control system includes but is not limited to any one of RS232, RS485 and Ethernet.

[0010] Preferably, the vacuum pressure acquisition system is integrated into the PLC or its expansion module, and the vacuum pressure acquisition system includes but is not limited to Avac or Zhende pressure sensors.

[0011] Preferably, the PC and software control system include but are not limited to a host, a display screen, a moxa card required for communication, a router and a serial port server.

[0012] Preferably, the touch screen is a human-machine interface or a wince computer.

[0013] Preferably, the network system adopts AP or client mode networking.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This solution proposes an air-conditioning vacuum detection device. After the air-conditioning enters the workstation manually or automatically and is connected to the quick connector, the vacuum detection system will automatically start. The system can flexibly adjust the vacuuming and pressure holding time according to actual needs, adapt to the speed requirements of different production lines, and improve overall work efficiency. All links in the detection process are controlled by PLC, which reduces the interference of human factors on the detection results and improves reliability. At the same time, the system is equipped with an unqualified alarm mechanism. If the test fails, it will be prompted immediately, avoiding the missed detection phenomenon that may occur during manual inspection, and ensuring that each link can be executed according to the set standards. By displaying the vacuum curve in real time, the operator can intuitively monitor the vacuuming process, discover potential problems in time, and ensure that each test meets the standards. The intelligent configuration and conversion mechanism of the vacuum gauge ensures measurement accuracy in various application environments and reduces inconsistent test results due to equipment differences.

[0016] In this solution, the detection device can automatically switch protocols according to the PLC brand used. At the same time, for different types of vacuum gauges, the system can realize the corresponding KB value conversion through the configuration file, ensuring flexibility and compatibility in various application environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is the hardware topology diagram of the present utility model;

[0019] Figure 3 This is the software topology diagram of the present utility model.

[0020] The numbers in the figure are:

[0021] 1. Suspension chain; 2. Detection system bracket; 3. Electric control box; 4. Touch screen; 5. Start button; 6. Stop button; 7. Power switch. DETAILED DESCRIPTION

[0022] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0023] Reference Figure 1 As shown, an air-conditioning vacuum detection device includes a suspension chain 1 and a detection system bracket 2. The detection system bracket 2 is suspended on a hook of the suspension chain 1. The end of the suspension chain 1 away from the detection system bracket 2 is fixedly connected to the trolley and the power mechanism by screws. The lower end of the detection system bracket 2 is fixedly connected to an electric control box 3 by screws. The electric control box 3 is provided with a touch screen 4, a start button 5, a stop button 6, a power switch 7, a PLC, a vacuum pressure acquisition system, a network system, a vacuum pump control system, a pressure maintaining solenoid valve, an alarm system, a PC and a software control system.

[0024] Furthermore, the start button 5 and the stop button 6 are used to control the progress and termination of the test respectively.

[0025] Furthermore, the touch screen 4 includes five RS232 or 485 interfaces, two USB hosts, one USB debugging port and one network port.

[0026] Furthermore, the electric control box 3, the PC and the software control system adopt, but are not limited to, wireless networking with a router or wired networking with a switch.

[0027] Furthermore, the communication connection between the touch screen 4, the start button 5, the stop button 6, the power switch 7, the PLC, the vacuum pressure acquisition system, the network system, the vacuum pump control system, the pressure maintaining solenoid valve, the alarm system and the PC and the software control system includes but is not limited to any one of RS232, RS485 and Ethernet.

[0028] Furthermore, the vacuum pressure acquisition system is integrated into the PLC or its expansion module to facilitate maintenance and communication acquisition. The vacuum pressure acquisition system includes but is not limited to Avac or Zhende pressure sensors, and the detection device can automatically switch protocols according to the PLC brand used.

[0029] Furthermore, the PC and software control system includes but is not limited to a host computer, a display screen, a moxa card required for communication, a router, and a serial port server.

[0030] Furthermore, the touch screen 4 is a human-machine interface or a wince computer.

[0031] Furthermore, the network system adopts AP or client mode networking.

[0032] Furthermore, the alarm system uses a three-color alarm light to indicate the current test status, namely, a test in progress light, a failed light, and a passed light.

[0033] Furthermore, the PC and software control system use routing or switches to achieve software communication and data acquisition between the PC and the touch screen 4 .

[0034] Furthermore, the hardware design has an external interface of 1 RS232 and 2 RS485 interfaces, and an internal interface for receiving and controlling PLC.

[0035] Reference Figure 2 As shown, the lower computer unit consists of a wince system touch screen 4, which realizes vacuum pressure collection, start and stop control and other functions through a network port and 5 serial ports, and realizes real-time communication with the industrial computer through a router network, including management such as machine model setting and pressure range setting. If it is a ring line, the industrial computer obtains the barcode through the serial port and sends it to the test trolley through the network. If it is a fixed workstation, the barcode reading can also be realized through the wince serial port.

[0036] Reference Figure 3 As shown in the figure, in terms of software, the lower computer micro-embedded wince touch screen 4 is used as the platform host, and the net platform C# programming technology is used to divide the software into modules: machine model identification class, PLC communication class, vacuum pressure communication class, etc. The main interface will display the vacuum pressure value in real time for observing the status of the machine under test.

[0037] Furthermore, the application scenarios of the present invention include but are not limited to the field of online detection of air conditioning vacuuming.

[0038] Working principle: When in use, the operator places the air-conditioning equipment to be tested on the workstation and ensures that all connectors and interfaces are in good condition. Connect the quick connector of the vacuum detection system to the vacuum interface of the air conditioner. The system automatically starts the vacuum pump and starts the vacuuming process. The vacuuming time is set to 150 seconds. The system will perform vacuuming within this time. The system monitors the vacuum degree in real time and displays the current vacuum pressure value. After 150 seconds, the system automatically stops vacuuming and performs vacuum degree detection. If it does not reach 100Pa within 1 minute, the system will sound and light alarms to indicate that the vacuuming is unqualified. After vacuuming, close the vacuum solenoid valve and start the pressure holding test. The pressure holding time is set to 10 seconds. Check the pressure during the pressure holding process. If the pressure is lower than 250P after 10 seconds of pressure holding a. The system will display an audible and visual prompt of "OK", indicating that the test is qualified. Otherwise, the system will issue an audible and visual alarm to indicate that it is unqualified. During the pressure holding process, the system will test the sealing of the vacuum solenoid valve and sample the current vacuum degree to determine whether there is a leak. If the vacuum pressure drops during the pressure holding process, or does not rise at all, the system will issue an audible and visual alarm to indicate that there is a leak in the solenoid valve. After the test is completed, the system will continue to open the solenoid valve and perform subsequent vacuuming operations, displaying the vacuum degree curve in real time. After confirming that the system is normal, the operator presses the stop button 6 to end the work. The system automatically records all data during the vacuuming and testing process to provide a basis for subsequent analysis. The operator can make necessary adjustments and optimizations based on the system prompts and records.

[0039] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. An air conditioning vacuum detection device, characterized in that: The invention comprises a suspension chain (1) and a detection system bracket (2), wherein the detection system bracket (2) is suspended on a hook of the suspension chain (1), and one end of the suspension chain (1) away from the detection system bracket (2) is fixedly connected to a trolley and a power mechanism by screws, and the lower end of the detection system bracket (2) is fixedly connected to an electric control box (3) by screws, and the electric control box (3) is provided with a touch screen (4), a start button (5), a stop button (6), a power switch (7), a PLC, a vacuum pressure acquisition system, a network system, a vacuum pump control system, a pressure maintaining solenoid valve, an alarm system, a PC and a software control system.

2. The air conditioner vacuum detection device according to claim 1, characterized in that: The touch screen (4) comprises five RS232 or 485 interfaces, two USB hosts, one USB debugging port and one network port.

3. The air conditioner vacuum detection device according to claim 1, characterized in that: The electric control box (3) and the PC and software control system adopt, but are not limited to, wireless networking with a router or wired networking with a switch.

4. The air conditioner vacuum detection device according to claim 1, characterized in that: The communication connection between the touch screen (4), the start button (5), the stop button (6), the power switch (7), the PLC, the vacuum pressure acquisition system, the network system, the vacuum pump control system, the pressure-maintaining solenoid valve, the alarm system and the PC and the software control system includes but is not limited to any one of RS232, RS485 and Ethernet.

5. The air conditioner vacuum detection device according to claim 1, characterized in that: The vacuum pressure acquisition system is integrated into the PLC or its expansion module. The vacuum pressure acquisition system includes but is not limited to Avac or Zhende pressure sensors.

6. The air conditioner vacuum detection device according to claim 1, characterized in that: The PC and software control system include but are not limited to a host, a display screen, a moxa card required for communication, a router and a serial port server.

7. The air conditioner vacuum detection device according to claim 1, characterized in that: The touch screen (4) is a human-machine interface or a WinCE computer.

8. The air conditioner vacuum detection device according to claim 1, characterized in that: The network system adopts AP or client mode networking.

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