Leak test device, control method thereof, and storage medium

Abstract

The application belongs to the technical field of sealing test equipment, and discloses a leakage test device, a control method thereof, and a storage medium. The leakage test device is connected with a coffee machine. The leakage test device comprises a plurality of first valve components, a plurality of pipeline components, and an air leak detector. The coffee machine comprises a water inlet, a water outlet, and a plurality of second valve components. The air leak detector is connected with an input end of the water inlet and an output end of the water outlet based on the first valve components and the pipeline components, respectively. The second valve components are connected between the water inlet and the water outlet. The air leak detector is communicatively connected with the first valve components and the second valve components, respectively. Thus, the application can solve the technical problem that the leakage test of a traditional coffee machine needs to be completed manually.

Description

Technical Field

[0001] This application relates to the field of sealing test equipment technology, and in particular to a leakage test device and its control method, as well as a storage medium. Background Technology

[0002] With the development of technology, people have applied electronic technology to coffee machines, realizing the automatic control of the entire coffee brewing process, including grinding, tamping, filling, brewing, and removing residue.

[0003] For safety and performance reasons, coffee machines are tested for leaks before leaving the factory. However, traditional leak tests are mostly done manually. Summary of the Invention

[0004] The main objective of this application is to provide a leakage testing device and its control method, as well as a storage medium, in order to solve the technical problem that leakage testing of traditional coffee machines requires manual operation.

[0005] To achieve the above objectives, this application provides a leakage testing device connected to a coffee machine. The leakage testing device includes: multiple first valve components, multiple pipe components, and an air leak detector. The coffee machine includes: a water inlet, a water outlet, and multiple second valve components.

[0006] The air leak detector is based on the first valve component and the pipe component being connected to the input end of the water inlet and the output end of the water outlet, respectively, and the second valve component being connected between the water inlet and the water outlet;

[0007] The air leak detector is communicatively connected to the first valve component and the second valve component, respectively.

[0008] Optionally, the first valve component includes: a first pneumatic control valve, a second pneumatic control valve, and a third pneumatic control valve; the pipeline component includes: a first tee fitting, a second tee fitting, and multiple pipelines.

[0009] The air leak detector is connected to the input end of the first air control valve via the pipeline. The output end of the first air control valve is connected to the input end of the first tee fitting via the pipeline. The second output end of the first tee fitting is used to connect to the water inlet. The first output end of the first tee fitting is connected to the input end of the second air control valve via the pipeline. The first output end of the second air control valve is connected to the input end of the second tee fitting via the pipeline. The first output end of the second tee fitting is connected to the input end of the third air control valve via the pipeline. The second output end of the second tee fitting is used to connect to the water outlet of the coffee machine. The output end of the third air control valve is used to discharge test gas.

[0010] The air leak detector is communicatively connected to the first air control valve, the second air control valve, and the third air control valve.

[0011] Optionally, the leak testing device further includes: a gas storage tank;

[0012] The gas storage tank is connected to the input terminal of the air leak detector.

[0013] Optionally, the leakage testing device includes: a filter;

[0014] The input end of the filter is connected to the air leak detector, and the output end of the filter is connected to the first air control valve;

[0015] The leak testing device also includes: an air dryer;

[0016] The input end of the air dryer is connected to the output end of the filter, and the output end of the air dryer is connected to the first air control valve;

[0017] The leakage testing device also includes: a pressure gauge;

[0018] The connection end of the first pneumatic control valve and the first tee fitting is connected to the pressure gauge.

[0019] Optionally, the coffee machine further includes: a first solenoid valve, a second solenoid valve, a cold cylinder, and a hot cylinder;

[0020] The output end of the water inlet is connected to the input end of the first solenoid valve and the input end of the second solenoid valve, respectively. The output end of the first solenoid valve is connected to the input end of the cold cylinder, and the output end of the second solenoid valve is connected to the input end of the hot cylinder. The input end of the water outlet is connected to the output end of the cold cylinder and the output end of the hot cylinder, respectively.

[0021] The air leak detector is communicatively connected to the first solenoid valve and the second solenoid valve, respectively.

[0022] Furthermore, to achieve the above objectives, this application also provides a control method for a leakage testing device, the control method comprising:

[0023] The air leak detector is controlled to identify the test components of the coffee machine and sends control signals corresponding to the test components to the first valve component and the second valve component respectively. The control signals include an open signal and an close signal.

[0024] After the first valve component and the second valve component are opened or closed based on the control signal, the air leak detector is controlled to introduce test gas with a first preset pressure threshold. After a preset time period, the pressure of the test gas is detected to be greater than or equal to the second preset pressure threshold, and the test gas is discharged.

[0025] If the pressure is confirmed to be greater than or equal to the second preset pressure threshold, then the airtightness of the test component is confirmed to be intact.

[0026] Optionally, the first valve component includes: a first pneumatic control valve, a second pneumatic control valve, and a third pneumatic control valve; the second valve component includes: a first solenoid valve and a second solenoid valve; the step of controlling the air leak detector to confirm the test component of the coffee machine and sending control signals corresponding to the test component to the first valve component and the second valve component respectively includes:

[0027] If the air leak detector confirms that the test component of the coffee machine is a cold cylinder, it sends an opening signal to the first air control valve and the first solenoid valve, and a closing signal to the second air control valve, the third air control valve, and the second solenoid valve, respectively.

[0028] If the air leak detector confirms that the test component of the coffee machine is a hot cylinder, it sends an opening signal to the first air control valve and the second solenoid valve, and a closing signal to the second air control valve, the third air control valve, and the first solenoid valve, respectively.

[0029] If the air leak detector confirms that the test components of the coffee machine are the water inlet and the water outlet, it sends an opening signal to the first air control valve and the second air control valve, respectively, and a closing signal to the third air control valve, the first solenoid valve, and the second solenoid valve, respectively.

[0030] Optionally, the step of venting the test gas includes:

[0031] The air leak detector is controlled to send an opening signal to the third pneumatic control valve;

[0032] The third pneumatic control valve receives the opening signal and opens to discharge the test gas after the test is completed.

[0033] Optionally, after the step of detecting whether the pressure of the test gas is greater than or equal to a second preset pressure threshold after a preset time period and venting the test gas, the method further includes:

[0034] If it is confirmed that the pressure is greater than or equal to the second preset pressure threshold, the step of controlling the air leak detector to introduce test gas at the first preset pressure threshold, and detecting whether the pressure of the test gas is greater than or equal to the second preset pressure threshold after a preset time period is executed, so as to perform multiple tests on the test component and record the test results.

[0035] The number of times the test passed in the test results is detected. If the number of times is greater than a preset threshold, the airtightness of the test component is confirmed to be intact.

[0036] In addition, to achieve the above objectives, this application also provides a computer storage medium storing a control program for a leakage testing device, wherein the control program for the leakage testing device, when executed by a processor, implements the steps of the control method for the leakage testing device as described above.

[0037] Compared to traditional methods that rely solely on manual leak testing, this application's leak testing device is connected to a coffee machine. The leak testing device includes: multiple first valve components, multiple pipe components, and an air leak detector. The coffee machine includes: a water inlet, a water outlet, and multiple second valve components. The air leak detector is connected to the input end of the water inlet and the output end of the water outlet, respectively, based on the first valve components and the pipe components. The second valve components are connected between the water inlet and the water outlet. The air leak detector is communicatively connected to both the first valve components and the second valve components. The control method of the leakage testing device includes: controlling an air leak detector to identify the testing component of the coffee machine, and sending control signals corresponding to the testing component to a first valve component and a second valve component respectively, wherein the control signals include an opening signal and a closing signal; after the first valve component and the second valve component have opened or closed based on the control signals, controlling the air leak detector to introduce test gas at a first preset pressure threshold, detecting whether the pressure of the test gas is greater than or equal to a second preset pressure threshold after a preset time period, and discharging the test gas; if it is confirmed that the pressure is greater than or equal to the second preset pressure threshold, then the airtightness of the testing component is confirmed to be intact.

[0038] This application uses an air leak detector to send control signals to the first and second valve components based on the test components. After receiving the control signals, the first and second valve components open or close. Then, the air leak detector tests the gas at a preset pressure threshold. After maintaining the pressure for a period of time, the difference between the pressure at this time and the preset pressure threshold is used to determine whether the airtightness of the coffee machine is intact. Thus, this application realizes automatic testing of each test component of the coffee machine, solving the technical problem that leakage testing of traditional coffee machines requires manual operation. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the frame structure of a leakage testing device provided in an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the structure of the first valve component and the pipeline component in a leakage testing device provided in an embodiment of this application;

[0041] Figure 3 A schematic diagram of the frame structure of a leakage testing device provided in another embodiment of this application;

[0042] Figure 4 This is a schematic diagram illustrating the application of a leakage testing device provided in an embodiment of this application;

[0043] Figure 5 A detailed connection diagram of the air leak detector and coffee machine provided in an embodiment of this application;

[0044] Figure 6 This is a schematic diagram illustrating the test application of a leakage testing device provided in one embodiment of this application;

[0045] Figure 7 A flowchart illustrating an embodiment of the control method for the leakage testing apparatus of this application;

[0046] Figure 8 A flowchart illustrating another embodiment of the control method for the leakage testing apparatus of this application;

[0047] Figure 9 This is a flowchart illustrating another embodiment of the control method for the leakage testing device of this application.

[0048] Explanation of icon numbers:

[0049] A Leakage testing equipment B coffee machine A1 Air leak detector A2 First valve component A3 Pipe components B1 Inlet B2 water outlet B3 Second valve component Q1 First pneumatic control valve Q2 Second pneumatic control valve Q3 Third pneumatic control valve H1 First tee fitting H2 Second tee fitting B1 Inlet B2 water outlet A4 gas tank A5 Filter A6 air dryer A7 pressure gauge B3 First solenoid valve B4 Second solenoid valve CWT Cold cylinder HWT Hot cylinder D1 First check valve D2 Second check valve D3 Third check valve

[0050] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0051] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0053] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0054] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0056] This application provides a leakage testing device, referring to... Figure 1 , Figure 1 This is a schematic diagram of the frame structure of a leakage testing device provided in an embodiment of the present application. The leakage testing device A is connected to a coffee machine B. The leakage testing device A includes: a plurality of first valve components A2, a plurality of pipe components A3 and an air leak detector A1. The coffee machine B includes: a water inlet B1, a water outlet B2 and a plurality of second valve components B3.

[0057] The air leak detector A1 is connected to the input end of the inlet B1 and the output end of the outlet B2 based on the first valve component A2 and the pipe component A3 respectively, and the second valve component B3 is connected between the inlet B1 and the outlet B2.

[0058] The air leak detector A1 is communicatively connected to the first valve component A2 and the second valve component B3, respectively.

[0059] It should be noted that the specific model of the A1 air leak detector can be LS-R700. The A1 air leak detector features display, leak detector management, pressure protection, and error reduction functions. The display function shows the test results; the leak detector management function checks and adjusts the zero-point drift and accuracy of the differential pressure sensor; the pressure protection function maintains pressure at the leak point; and the error reduction function repeatedly detects leaks within a preset range, extending the set number of detections. (Reference) Figure 4 , Figure 4 This is a schematic diagram of the application of a leak testing device provided in an embodiment of the present application. The air leak detector A1 also includes a filter pressure regulating valve, and the air leak detector A1 adjusts the driving pressure to 400 to 700 kPa.

[0060] In this embodiment, an air leak detector A1 is communicatively connected to the first valve component A2 and the second valve component B3 of the coffee machine B. Therefore, when testing different components of the coffee machine B, control signals are sent to the first valve component A2 and the second valve component B3 respectively. It should be noted that the control signals sent by the air leak detector A1 to the first valve component A2 and the second valve component B3 are different depending on the component of the coffee machine B. That is, there is a corresponding relationship between the test component of the coffee machine B and the control signals of the first valve component A2 and the second valve component B3. Compared to manual testing, this application uses an air leak detector to send control signals to the first and second valve components based on the test component. The first and second valve components open or close after receiving the control signals. Then, the air leak detector tests the gas at a preset pressure threshold. After maintaining the pressure for a period of time, the difference between the current pressure and the preset pressure threshold is used to determine whether the airtightness of the coffee machine is intact. Thus, this application achieves automatic testing of each test component of the coffee machine, solving the technical problem that traditional coffee machine leak testing requires manual completion.

[0061] Additionally, the second valve component B3 is connected via a pipe between the inlet B1 and the outlet B2, and is used to switch between cold and hot water output when using the coffee machine. It should be noted that this application can also be applied to water dispensers with cold and hot water tanks, or to direct water dispensers with multiple water storage tanks.

[0062] Optionally, in some feasible embodiments, reference is made to Figure 2 , Figure 2 This is a schematic diagram of the structure of the first valve component and the pipeline component in a leakage testing device provided in an embodiment of this application. The first valve component A2 includes: a first pneumatic control valve Q1, a second pneumatic control valve Q2 and a third pneumatic control valve Q3. The pipeline component A3 includes: a first tee fitting H1, a second tee fitting H2 and a plurality of pipelines.

[0063] The air leak detector A1 is connected to the input end of the first air control valve Q1 via the pipe. The output end of the first air control valve A1 is connected to the input end of the first tee fitting H1 via the pipe. The second output end of the first tee fitting H1 is used to connect to the water inlet B1. The first output end of the first tee fitting H1 is connected to the input end of the second air control valve Q2 via the pipe. The first output end of the second air control valve Q2 is connected to the input end of the second tee fitting H2 via the pipe. The first output end of the second tee fitting H2 is connected to the input end of the third air control valve Q3 via the pipe. The second output end of the second tee fitting H2 is used to connect to the water outlet of the coffee machine. The Q3 output end of the third air control valve is used to discharge test gas.

[0064] The air leak detector A1 is communicatively connected to the first air control valve Q1, the second air control valve Q2, and the third air control valve Q3.

[0065] It should be noted that the pneumatic control valve can also be other control valves, such as a solenoid valve, used to receive the control signal from the air leak detector A1, opening upon receiving an open signal and closing upon receiving a close signal.

[0066] In this embodiment, the first flow direction is that the air leak detector A1 flows to the inlet B1 through the first air control valve Q1 and the first tee fitting H1; the second flow direction is that the air leak detector A1 flows to the outlet B2 through the first air control valve Q1 and the first tee fitting H1, the second air control valve Q2, and the second tee fitting H2; and the third flow direction is that the air leak detector A1 is discharged from the pipeline through the first air control valve Q1 and the first tee fitting H1, the second air control valve Q2, the second tee fitting H2, and the third air control valve Q3. Thus, based on the specific control method of the leak testing device, the airtightness of the coffee machine is tested.

[0067] Optionally, in some feasible embodiments, reference is made to Figure 3 , Figure 3 This is a schematic diagram of the frame structure of a leakage testing device provided in another embodiment of the present application. The leakage testing device further includes: a gas storage tank A4;

[0068] The gas storage tank A4 is connected to the input terminal of the air leak detector A1.

[0069] In this embodiment, the gas storage tank A4 stores food-grade gas, with a specific capacity of 5L or 10L, depending on the actual situation. The gas in the gas storage tank A4 is used to test the various test components inside the coffee machine B based on the air leak detector A1, targeting the first air control valve Q1, the second air control valve Q2, the third air control valve Q3, the first solenoid valve B3, and the second solenoid valve B4, thereby testing the various test components of the coffee machine B.

[0070] Optionally, in some feasible embodiments, reference is made to Figure 4 and reference Figure 3 The leakage testing device includes: filter A5;

[0071] The input end of the filter A5 is connected to the air leak detector A1, and the output end of the filter A5 is connected to the first air control valve Q1.

[0072] The leak testing device also includes: an air dryer A6;

[0073] The input end of the air dryer A6 is connected to the output end of the filter A5, and the output end of the air dryer A6 is connected to the first air control valve Q1;

[0074] The leakage testing device also includes: pressure gauge A7;

[0075] The connection end of the first pneumatic control valve A7 and the first three-way fitting H1 is connected to the pressure gauge A7.

[0076] In this embodiment, filter A5 filters oil and water from the gas to ensure the cleanliness of the test gas. Air dryer A6 further removes moisture remaining in the test gas. Pressure gauge A7 is used to show the gas pressure in the pipeline to the test personnel.

[0077] refer to Figure 4 , Figure 4 The test sample is coffee machine B. The air leak detector A1 obtains the test gas from the standard tank, and after passing through filter A5 and air dryer A6 for filtration and dehumidification, it is tested on coffee machine B through bypass devices such as first air control valve Q1, second air control valve Q2 and third air control valve Q3, first tee fitting H1, second tee fitting H2 and multiple pipes.

[0078] Optionally, in some feasible embodiments, reference is made to Figure 5 and Figure 6 , Figure 5 This is a detailed connection diagram of the air leak detector and coffee machine provided in an embodiment of the leakage testing device of this application. Figure 6This is a schematic diagram of the test application of a leakage testing device provided in an embodiment of this application. The coffee machine B further includes: a first solenoid valve B3, a second solenoid valve B4, a cold cylinder CWT, and a hot cylinder HWT.

[0079] The output end of the inlet B1 is connected to the input end of the first solenoid valve B3 and the input end of the second solenoid valve B4, respectively. The output end of the first solenoid valve B3 is connected to the input end of the cold cylinder CWT, and the output end of the second solenoid valve B4 is connected to the input end of the hot cylinder HWT. The input end of the outlet B2 is connected to the output end of the cold cylinder CWT and the output end of the hot cylinder HWT, respectively.

[0080] The air leak detector A1 is communicatively connected to the first solenoid valve B3 and the second solenoid valve B4, respectively.

[0081] In this embodiment, as Figure 5 Coffee machine B is part of the coffee machine structure. A first solenoid valve B3 controls the flow of water from inlet B1 into the cold cylinder CWT, and a second solenoid valve B4 controls the flow of water from inlet B1 into the hot cylinder HWT. An air leak detector A1 controls the first air control valve Q1, the second air control valve Q2, the third air control valve Q3, the first solenoid valve B3, and the second solenoid valve B4, thereby testing the airtightness of the cold cylinder CWT and the piping leading to it, the airtightness of the hot cylinder HWT and the piping leading to it, and / or the airtightness of the inlet and outlet B2 of coffee machine B1. The cold cylinder stores cold water, and the hot cylinder stores hot water.

[0082] Additionally, refer to Figure 6 The output of inlet B1 is connected to the input of the first check valve D1. The output of the first check valve D1 is connected to the first solenoid valve B3 via the first branch, and to the second solenoid valve B4 via the second branch. The outlet of the cooling cylinder is connected to outlet B2 via the second check valve D2, and to outlet B2 via the third check valve D3. Thus, the first check valve D1, the second check valve D2, and the third check valve D3 ensure that water can only flow in one direction. That is, water flows in only from the input of the check valve and exits only from the output.

[0083] Based on the above embodiments of the leakage testing device of this application, various embodiments of the control method of the leakage testing device of this application are proposed. Please refer to them. Figure 1 , Figure 1 This is a schematic diagram of the frame structure of a leakage testing device provided in an embodiment of this application. The control method of the leakage testing device includes:

[0084] Step S10: Control the air leak detector to confirm the test component of the coffee machine, and send the corresponding control signal of the test component to the first valve component and the second valve component respectively, wherein the control signal includes an open signal and an close signal;

[0085] Step S20: After the first valve component and the second valve component have opened or closed based on the control signal, the air leak detector is controlled to introduce test gas with a first preset pressure threshold. After a preset time period, the pressure of the test gas is detected to be greater than or equal to the second preset pressure threshold, and the test gas is discharged.

[0086] Step S30: If it is confirmed that the pressure is greater than or equal to the second preset pressure threshold, then the airtightness of the test component is confirmed to be intact.

[0087] In this embodiment, the air leak detector A1 confirms the test components of the coffee machine based on a pre-set program or a test signal triggered by the tester using the keypad on the display screen. Specifically, this can be a cold cylinder CWT test, a hot cylinder HWT test, and tests of the outlet B2 and inlet B1. After the first valve component A2 of the leak testing device A and the second valve component B3 of the coffee machine B are opened or closed based on control signals, the air leak detector A1 controls the air leak detector A1 to introduce test gas at a first preset pressure threshold into the coffee machine B. After a preset time period, it detects whether the pressure of the test gas is greater than or equal to a second preset pressure threshold, and discharges the test gas by controlling the first valve component A2. If the pressure is confirmed to be greater than or equal to the second preset pressure threshold, the test component is confirmed to have passed the test. The first preset pressure threshold can be different depending on the settings of each test component, and the second preset pressure threshold can be the same as or lower than the first preset pressure threshold by a preset range, such as 99% or 98%. The specific value can be set according to the actual situation. Therefore, compared to manual testing, this application uses an air leak detector to send control signals to the first valve component and the second valve component based on the test component. After receiving the control signals, the first valve component and the second valve component open or close. Then, the air leak detector tests the gas through a preset pressure threshold. After maintaining the pressure for a period of time, the difference between the pressure at this time and the preset pressure threshold is used to determine whether the airtightness of the coffee machine is intact. Thus, this application realizes automatic testing of each test component of the coffee machine, solving the technical problem that leakage testing of traditional coffee machines requires manual completion.

[0088] Optionally, in some feasible embodiments, the first valve component includes: a first pneumatic control valve, a second pneumatic control valve, and a third pneumatic control valve; the second valve component includes: a first solenoid valve and a second solenoid valve; and the step S10 of "controlling the air leak detector to confirm the test component of the coffee machine and sending the control signal corresponding to the test component to the first valve component and the second valve component respectively" may further include the following steps:

[0089] Step S101: If the air leak detector confirms that the test component of the coffee machine is a cold cylinder, it sends an opening signal to the first air control valve and the first solenoid valve, and a closing signal to the second air control valve, the third air control valve, and the second solenoid valve, respectively.

[0090] Step S102: If the air leak detector confirms that the test component of the coffee machine is a hot cylinder, it sends an opening signal to the first air control valve and the second solenoid valve respectively, and sends a closing signal to the second air control valve, the third air control valve and the first solenoid valve respectively.

[0091] Step S103: If the air leak detector confirms that the test components of the coffee machine are the water inlet and the water outlet, it sends an opening signal to the first air control valve and the second air control valve respectively, and sends a closing signal to the third air control valve, the first solenoid valve and the second solenoid valve respectively.

[0092] In this embodiment, three test components are provided for testing. Of course, the three test components can be tested sequentially in a preset order, thus performing a complete test on the coffee machine. (Refer to...) Figure 7 , Figure 7 A flowchart illustrating an embodiment of the control method for the leakage testing apparatus of this application is provided. Figure 7 This is a schematic diagram of the gas flow direction during the cold cylinder test. When the test component is a cold cylinder, the first pneumatic control valve and the first solenoid valve are opened, and the second pneumatic control valve, the third pneumatic control valve, and the second solenoid valve are closed. At this time, the gas flowing out of the air leak detector passes sequentially through the first three-way fitting, the water inlet, the first one-way valve, the first solenoid valve, the cold cylinder water inlet, the cold cylinder water outlet, the third one-way valve, and the water outlet. Then, after the gas is pressurized in this passage for a period of time, the air leak detector detects the pressure of the gas inside the pipe. If the pressure after a period of time is greater than or equal to the second preset pressure threshold, it is confirmed that the test of the cold cylinder and the pipeline connected to the cold cylinder has passed, that is, the airtightness of the cold cylinder and the pipeline connected to the cold cylinder is good.

[0093] refer to Figure 8 , Figure 8 A flowchart illustrating another embodiment of the control method for the leakage testing apparatus of this application is provided. Figure 8This is a schematic diagram of the gas flow direction during the hot cylinder test. When the test component is the hot cylinder, the first pneumatic control valve and the second solenoid valve are opened, and the second pneumatic control valve, the third pneumatic control valve, and the first solenoid valve are closed. At this time, the gas flowing out of the air leak detector passes sequentially through the first pneumatic control valve, the first tee fitting, the water inlet, the second check valve, the hot cylinder water inlet, the hot cylinder water outlet, the second check valve, and the water outlet. Then, after the gas is pressurized in this passage for a period of time, the air leak detector detects the pressure of the gas inside the pipe. If the pressure after a period of time is greater than or equal to the second preset pressure threshold, it is confirmed that the test of the hot cylinder and the pipeline connected to the hot cylinder has passed, that is, the airtightness of the hot cylinder and the pipeline connected to the hot cylinder is good.

[0094] refer to Figure 9 , Figure 9 A flowchart illustrating yet another embodiment of the control method for the leakage testing apparatus of this application is provided. Figure 9 This diagram illustrates the gas flow direction during inlet and outlet testing. When the test components are the inlet and outlet, the first and second pneumatic control valves are opened, and the second, third, and second solenoid valves are closed. At this time, the gas flowing out of the air leak detector passes sequentially through the first pneumatic control valve, the first output end of the first tee fitting, the inlet, the first check valve, the second output end of the first tee fitting, the second pneumatic control valve, the second tee fitting, and the outlet. After the gas is pressurized in this path for a period of time, the air leak detector detects the pressure of the gas inside the pipe. If the pressure after a period of time is greater than or equal to the second preset pressure threshold, it is confirmed that the inlet and outlet pipe tests have passed, meaning that the airtightness of the inlet and outlet pipes is good.

[0095] Optionally, in some feasible embodiments, the step of "discharging the test gas" in step S30 may include the following steps:

[0096] Step S301: Control the air leak detector to send an opening signal to the third air control valve;

[0097] Step S302: Control the third pneumatic control valve to receive the opening signal and open it to discharge the test gas after the test is completed.

[0098] In this embodiment, after detecting whether the gas pressure after a preset time period is greater than or equal to the second preset pressure threshold, the air leak detector is controlled to send an opening signal to the third air control valve. The gas in the pipeline is discharged to the outside of the pipeline by opening the third air control valve, so that the next step of the test can be carried out or the coffee machine can be used after the test is stopped.

[0099] Optionally, in some feasible embodiments, after step S20, the control method of the leakage testing device of this application further includes:

[0100] Step S40: If it is confirmed that the pressure is greater than or equal to the second preset pressure threshold, execute the step of controlling the air leak detector to introduce test gas at the first preset pressure threshold, and after a preset time period, detect whether the pressure of the test gas is greater than or equal to the second preset pressure threshold, so as to perform multiple tests on the test component and record the test results.

[0101] Step S50: Detect the number of times the test passed in the test results. If the number of times is greater than a preset threshold, then the airtightness of the test component is confirmed to be intact.

[0102] In this embodiment, the same component is tested multiple times. For example, the same component is tested 5 times. If 4 or more of the 5 tests are passed, the component is confirmed to have passed the test. Thus, by testing the same component multiple times, the accuracy of the test is improved and misjudgment is prevented.

[0103] Furthermore, this application also proposes a computer storage medium for use in a computer. The computer storage medium can be a non-volatile computer-readable storage medium. The computer storage medium stores a control program for a leakage testing device. When the control program for the leakage testing device is executed by a processor, it implements the steps of the above-described control method for the leakage testing device.

[0104] The steps implemented when the control program of the leakage testing device running on the processor is executed can be referred to in various embodiments of the control method of the leakage testing device of this application, and will not be repeated here.

[0105] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0106] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0107] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a computer storage medium (such as Flash memory, ROM / RAM, magnetic disk, optical disk), and includes several instructions to cause a controller in a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to control the storage medium to perform data read and write operations to execute the methods described in the various embodiments of this application.

[0108] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A leakage testing device, characterized in that, The leakage testing device is connected to the coffee machine and includes: multiple first valve components, multiple pipe components, and an air leak detector. The coffee machine includes: a water inlet, a water outlet, and multiple second valve components. The air leak detector is based on the first valve component and the pipe component being connected to the input end of the water inlet and the output end of the water outlet, respectively, and the second valve component being connected between the water inlet and the water outlet; The air leak detector is communicatively connected to the first valve component and the second valve component respectively; the air leak detector sends control signals to the first valve component and the second valve component based on each test component of the coffee machine, and the first valve component and the second valve component open or close after receiving the control signals; The first valve component includes: a first pneumatic control valve, a second pneumatic control valve, and a third pneumatic control valve; the pipeline component includes: a first tee fitting, a second tee fitting, and multiple pipelines. The air leak detector is connected to the input end of the first air control valve via the pipeline. The output end of the first air control valve is connected to the input end of the first tee fitting via the pipeline. The second output end of the first tee fitting is used to connect to the water inlet. The first output end of the first tee fitting is connected to the input end of the second air control valve via the pipeline. The first output end of the second air control valve is connected to the input end of the second tee fitting via the pipeline. The first output end of the second tee fitting is connected to the input end of the third air control valve via the pipeline. The second output end of the second tee fitting is used to connect to the water outlet of the coffee machine. The output end of the third air control valve is used to discharge test gas. The air leak detector is communicatively connected to the first air control valve, the second air control valve, and the third air control valve.

2. The leakage testing device as described in claim 1, characterized in that, The leak testing device also includes: a gas storage tank; The gas storage tank is connected to the input terminal of the air leak detector.

3. The leakage testing device as described in claim 2, characterized in that, The leakage testing device includes: a filter; The input end of the filter is connected to the air leak detector, and the output end of the filter is connected to the first air control valve; The leak testing device also includes: an air dryer; The input end of the air dryer is connected to the output end of the filter, and the output end of the air dryer is connected to the first air control valve; The leakage testing device also includes: a pressure gauge; The connection end of the first pneumatic control valve and the first tee fitting is connected to the pressure gauge.

4. The leakage testing device as described in claim 3, characterized in that, The coffee machine also includes: a first solenoid valve, a second solenoid valve, a cold cylinder, and a hot cylinder; The output end of the water inlet is connected to the input end of the first solenoid valve and the input end of the second solenoid valve, respectively. The output end of the first solenoid valve is connected to the input end of the cold cylinder, and the output end of the second solenoid valve is connected to the input end of the hot cylinder. The input end of the water outlet is connected to the output end of the cold cylinder and the output end of the hot cylinder, respectively. The air leak detector is communicatively connected to the first solenoid valve and the second solenoid valve, respectively.

5. A control method for a leakage testing device, characterized in that, The control method for the leakage testing device is applied to the leakage testing device as described in claim 1, and the control method for the leakage testing device includes: The air leak detector is controlled to identify the test components of the coffee machine and sends control signals corresponding to the test components to the first valve component and the second valve component respectively. The control signals include an open signal and an close signal. After the first valve component and the second valve component are opened or closed based on the control signal, the air leak detector is controlled to introduce test gas with a first preset pressure threshold. After a preset time period, the pressure of the test gas is detected to be greater than or equal to the second preset pressure threshold, and the test gas is discharged. If the pressure is confirmed to be greater than or equal to the second preset pressure threshold, then the airtightness of the test component is confirmed to be intact.

6. The control method for the leakage testing device as described in claim 5, characterized in that, The first valve component includes: a first pneumatic control valve, a second pneumatic control valve, and a third pneumatic control valve. The second valve component includes: a first solenoid valve and a second solenoid valve. The step of controlling the air leak detector to confirm the test component of the coffee machine and sending control signals corresponding to the test component to the first valve component and the second valve component respectively includes: If the air leak detector confirms that the test component of the coffee machine is a cold cylinder, it sends an opening signal to the first air control valve and the first solenoid valve, and a closing signal to the second air control valve, the third air control valve, and the second solenoid valve, respectively. If the air leak detector confirms that the test component of the coffee machine is a hot cylinder, it sends an opening signal to the first air control valve and the second solenoid valve, and a closing signal to the second air control valve, the third air control valve, and the first solenoid valve, respectively. If the air leak detector confirms that the test components of the coffee machine are the water inlet and the water outlet, it sends an opening signal to the first air control valve and the second air control valve, respectively, and a closing signal to the third air control valve, the first solenoid valve, and the second solenoid valve, respectively.

7. The control method of the leakage testing device as described in claim 6, characterized in that, The step of venting the test gas includes: The air leak detector is controlled to send an opening signal to the third pneumatic control valve; The third pneumatic control valve receives the opening signal and opens to discharge the test gas after the test is completed.

8. The control method for the leakage testing device as described in claim 7, characterized in that, After the steps of detecting whether the pressure of the test gas is greater than or equal to a second preset pressure threshold after a preset time period and discharging the test gas, the method further includes: If it is confirmed that the pressure is greater than or equal to the second preset pressure threshold, the step of controlling the air leak detector to introduce test gas at the first preset pressure threshold, and detecting whether the pressure of the test gas is greater than or equal to the second preset pressure threshold after a preset time period is executed, so as to perform multiple tests on the test component and record the test results. The number of times the test passed in the test results is detected. If the number of times is greater than a preset threshold, the airtightness of the test component is confirmed to be intact.

9. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and the computer-readable storage medium stores a control program for a leakage testing device. When the control program for the leakage testing device is executed by a processor, it implements the steps of the control method for the leakage testing device as described in any one of claims 5 to 8.

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