Corrosion test tool for simulating actual use environment of air conditioner circuit board

Abstract

The utility model discloses a corrosion test tool for simulating an actual use environment of an air conditioner circuit board, which comprises a tool shell, a tested circuit board is fixedly mounted in the tool shell, and a simulation compressor shell, a simulation heating pipe group and an airflow simulation assembly are further arranged in the tool shell; a wiring hole is formed in the tool shell, and the tested circuit board, the heating module simulating the compressor shell, the simulation heating pipe set and the airflow simulation assembly are connected with a power supply control module arranged outside the tool shell through wires. And the power supply control module is used for supplying power to the heating module for simulating the compressor shell, the simulation heating pipe group and the airflow simulation assembly and controlling the working power thereof. According to the utility model, the actual corrosion condition of the circuit board under the influence of slight airflow and heat of the compressor during actual operation can be simulated.

Description

Technical Field

[0001] The utility model relates to the field of air conditioner safety testing, in particular to a corrosion test tooling for simulating the actual use environment of an air conditioner circuit board. Background Technique

[0002] China's economy has shifted from the high-speed growth stage to the high-quality development stage. There have been major changes in the economic structure, and residents' consumption has shifted more towards improving the quality of life. Product innovation has entered an active period. This active innovation is manifested in the optimization and upgrading of products in the air conditioner industry. As air conditioner products are shipped to all parts of the world and put into use, various problems caused by climate reasons have brought great troubles to enterprises, and the environmental adaptability of air conditioner products has become increasingly important.

[0003] Among them, air conditioners in coastal areas and those transported by sea for import and export are facing the problem of salt spray corrosion. The circuit board plays a crucial role in an air conditioner. It is the "nerve center" of the air conditioner. It is not only responsible for the normal operation of the air conditioner, but also involves multiple aspects such as safety protection, energy efficiency management, and user interaction. However, the components of the circuit board are easily affected by salt spray. The salt spray environment can accelerate the corrosion process of metal components and wires, resulting in a decline in the performance of the circuit board or even complete failure, leading to the loss of function of the air conditioner or even causing safety accidents.

[0004] Currently, the corrosion test standards for air conditioners are as follows:

[0005] GB 4706.32 "Safety of Household and Similar Electrical Appliances - Particular Requirements for Heat Pumps, Air Conditioners and Dehumidifiers";

[0006] GB / T 2423.17 "Environmental Testing for Electric and Electronic Products - Part 2: Test Methods, Test Ka: Salt Spray";

[0007] GB / T 2423.18-2021 "Environmental Testing - Part 2: Test Methods, Test Kb: Salt Spray, Alternating (Sodium Chloride Solution)";

[0008] GB / T 2423.33-2021 "Environmental Testing - Part 2: Test Methods, Test Kca: High Concentration Sulfur Dioxide Test";

[0009] GB / T2423.51-2020 "Environmental Testing - Part 2: Test Methods, Test Ke: Flowing Mixed Gas Corrosion Test";

[0010] JB / T 9535-2013 "Environmental Technical Requirements for Indoor and Outdoor Anti-Corrosion Electrical Products";

[0011] JB / T 9536-2013 "Environmental Technical Requirements for Indoor and Outdoor Anti-Corrosion Low-Voltage Electrical Appliances".

[0012] For the air conditioner circuit board, currently, the main methods are to follow the whole machine test or to conduct the test with a protective box.

[0013] In the above standard method, generally, the sedimentation amount of salt spray is used as the calibration value of the salt spray concentration. During the test, the machine generally does not run, so the corrosion situation of the circuit board during the operation of the whole machine cannot be covered.

[0014] When the circuit board is randomly tested on the whole machine, if it runs, the outdoor unit of the air conditioner will blow air, generating air flow disturbance, which will cause uneven distribution of the salt spray concentration inside the box body, deviating from the standard test requirements. However, if it does not run, the air flow disturbance around the circuit board cannot be simulated, and the comprehensive influence of factors such as the heat generated by the circuit board itself and the heat generated by the compressor during actual operation cannot be simulated, resulting in deviation from the corrosion and failure situations under actual use. Utility Model Content

[0015] The purpose of the present utility model is to provide a corrosion test tooling for simulating the actual use environment of the air conditioner circuit board, simulating the actual corrosion situation of the circuit board under the influence of slight air flow and compressor heat during actual operation.

[0016] The technical solution of the present utility model is as follows:

[0017] A corrosion test tooling for simulating the actual use environment of the air conditioner circuit board, including a tooling housing, the tooling housing is configured to have the same shape as the outdoor unit housing of the air conditioner to simulate the installation space of the outdoor unit circuit board of the air conditioner, a circuit board to be tested is fixedly installed inside the tooling housing, and the following are further provided inside the tooling housing:

[0018] A simulated compressor housing, a heating module with adjustable heat generation amount is arranged on the inner side and / or outer side surface of the simulated compressor housing, used to simulate the heat dissipated from the housing during the operation of the compressor;

[0019] A simulated heating tube group, which is configured as a bendable electric heating tube structure, used to simulate the heat dissipated from the pipelines inside the outdoor unit of the air conditioner;

[0020] An air flow simulation component, which is configured as an air flow simulation device composed of several fans or an air flow simulation device composed of several jet pipes, used to create an internal air flow simulating the operation of the outdoor unit of the air conditioner;

[0021] A wire passing hole is opened on the tooling housing, and the circuit board to be tested, the heating module of the simulated compressor housing, the simulated heating tube group and the air flow simulation component are connected to a power supply control module arranged outside the tooling housing through wires, and the power supply control module is used to supply power to the heating module of the simulated compressor housing, the simulated heating tube group and the air flow simulation component and control their working power.

[0022] The test tooling of the present utility model constructs a simulation test environment that is closer to the actual operating environment of the circuit board. It can combine with the existing standard methods of corrosion tests to simulate the actual corrosion process of the circuit board under the influence of slight air flow and the heat of the compressor in the actual operating conditions of being powered on or off.

[0023] The present utility model also has the following preferred designs:

[0024] The heating module of the simulated compressor housing of the present utility model is any one or more of an electric heating sheet, an electric heating patch, or an electric heating belt. The heat dissipated by the compressor through the surface of its housing is simulated through the heating module.

[0025] The surface of the simulated heating tube group of the present utility model is wrapped and sealed with an aluminum film to prevent the simulated heating tube group from being corroded. As an alternative implementation, a heat-conducting and anti-corrosion layer of other materials can be coated on the surface of the simulated heating tube group.

[0026] A temperature sensor, specifically a thermocouple, is provided in the temperature control area of the simulated compressor housing and / or the temperature control area of the simulated heating tube group of the present utility model.

[0027] The fan or the air jet pipe of the air flow simulation component of the present utility model is arranged at a position on the tooling housing with an opening or a gap to facilitate simulating the actual wind field air flow situation inside the outdoor unit of the air conditioner.

[0028] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0029] The present utility model constructs a simulation test environment that is closer to the actual operating environment of the circuit board. It can combine with the existing standard methods of corrosion tests to simulate the actual corrosion process of the circuit board under the influence of slight air flow and the heat of the compressor during actual operation, so as to improve the accuracy of the test results. Description of the Drawings

[0030] Figure 1 It is the working principle diagram of a corrosion test tooling for simulating the actual use environment of an air conditioner circuit board provided by the present utility model.

[0031] Description of the Reference Numerals:

[0032] 1 - Tooling housing; 2 - Simulated compressor housing; 3 - Heating module; 4 - Simulated heating tube group; 5 - Circuit board; 6 - Fan; 7 - Wiring hole; 8 - Electric wire; 9 - Power control module. Detailed Embodiments

[0033] To make the objectives, technical solutions and advantages of the present utility model more apparent, exemplary embodiments according to the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments of the present utility model. It should be understood that the present utility model is not limited by the exemplary embodiments described herein. Based on the embodiments of the present utility model described herein, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present utility model.

[0034] In the following description, numerous specific details are given to provide a more thorough understanding of the present utility model. However, it will be apparent to those skilled in the art that the present utility model may be practiced without one or more of these details. In other instances, some well-known technical features are not described in order to avoid obscuring the present utility model.

[0035] It should be understood that the present utility model can be implemented in different forms and should not be construed as limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the present utility model to those skilled in the art.

[0036] The purpose of the terms used herein is only to describe specific embodiments and is not a limitation of the present utility model. When used herein, the singular forms "a", "an" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprising" and / or "including", when used in this specification, determine the presence of the described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups. When used herein, the term "and / or" includes any and all combinations of the related listed items.

[0037] To thoroughly understand the present utility model, detailed structures will be set forth in the following description to illustrate the technical solutions proposed by the present utility model. The optional embodiments of the present utility model are described in detail below. However, in addition to these detailed descriptions, the present utility model may also have other implementation manners.

[0038] As Figure 1 shown, a corrosion test tooling for simulating the actual use environment of an air conditioner circuit board includes a tooling housing 1. The tooling housing 1 is configured to have the same shape as the housing of the outdoor unit of the air conditioner to simulate the installation space of the circuit board 5 of the outdoor unit of the air conditioner. The circuit board 5 to be tested is fixedly installed inside the tooling housing 1. The following are further provided inside the tooling housing 1:

[0039] Simulate the compressor housing 2, and a heating module 3 with adjustable heat generation is provided on the inner and / or outer surface of the compressor housing 2 for simulating the heat dissipated from the housing during the operation of the compressor;

[0040] Simulate a heating tube group 4, which is configured as a bendable and deformable electric heating tube structure for simulating the heat dissipated from the pipelines in the outdoor unit of the air conditioner;

[0041] An air flow simulation component, which is configured as an air flow simulation device composed of several fans 6 or an air flow simulation device composed of several jet pipes;

[0042] A wiring hole 7 is opened on the tooling housing 1, and the tested circuit board 5, the heating module 3 of the simulated compressor housing 2, the simulated heating tube group 4, and the air flow simulation component are connected to a power supply control module 9 provided outside the tooling housing 1 through wires 8. The power supply control module 9 is used to supply power to the heating module 3 of the simulated compressor housing 2, the simulated heating tube group 4, and the air flow simulation component 4 and control their operating power.

[0043] In some embodiments, the heating module 3 of the simulated compressor housing 2 is any one or more of an electric heating sheet, an electric heating patch, or an electric heating tape. The heat dissipated from the compressor through its housing surface is simulated by the heating module 3.

[0044] In some embodiments, the surface of the simulated heating tube group 4 is wrapped and sealed with an aluminum film to prevent the simulated heating tube group from being corroded. As other feasible embodiments, a heat-conducting and anti-corrosion layer of other materials can be coated on the surface of the simulated heating tube group 4.

[0045] In some embodiments, temperature sensors are provided in the temperature control area of the simulated compressor housing 2 and / or the temperature control area of the simulated heating tube group 4 to monitor the local area temperature inside the outdoor unit in real time and feedback it to the power supply control module 9 for controlling the test process.

[0046] In some embodiments, the fans 6 or jet pipes of the air flow simulation component are arranged at positions on the tooling housing 1 with openings or gaps to facilitate simulating the actual wind field air flow situation inside the outdoor unit of the air conditioner.

[0047] In practical applications, to improve the accuracy of the test results of the test tooling, the outer shell of the air conditioner outdoor unit can be directly used as the tooling shell 1 of the test tooling according to the situation, and the compressor of the air conditioner outdoor unit can be used as the simulated compressor housing 2. Controllable heating devices such as electric heating sheets, electric heating stickers, and electric heating tapes are attached to the top of the compressor housing. The simulated heating pipe group 4 is mainly used to simulate the heat dissipated by the internal pipeline of the air conditioner outdoor unit, and it can be composed of bendable copper pipes and electric heating sheets, electric heating stickers, and electric heating tapes arranged on the outer surface of the copper pipes, so as to facilitate simulating the actual layout position and heat dissipation situation of the internal pipeline of the outdoor unit. The circuit board 5 of the present invention is connected to the power supply control module 9 to simulate the actual corrosion process of the simulated circuit board under the influence of slight air flow and compressor heat during the actual operation of being powered on or powered off.

[0048] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions 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. A corrosion test tooling for simulating the actual use environment of an air conditioner circuit board, including a tooling housing, characterized in that, The tooling housing is configured to have the same shape as the housing of the outdoor unit of the air conditioner to simulate the installation space of the circuit board of the outdoor unit of the air conditioner. The tested circuit board is fixedly installed inside the tooling housing, and the following are further provided inside the tooling housing: A simulated compressor housing, on the inner and / or outer surface of which a heating module with adjustable heat generation is provided to simulate the heat dissipated from the housing during the operation of the compressor; A simulated heating pipe group, which is configured as a bendable and deformable electric heating pipe structure to simulate the heat dissipated from the pipelines inside the outdoor unit of the air conditioner; An air flow simulation component, which is configured as an air flow simulation device composed of a plurality of fans or an air flow simulation device composed of a plurality of jet pipes; A wire routing hole is provided on the tooling housing, and the tested circuit board, the heating module of the simulated compressor housing, the simulated heating pipe group and the air flow simulation component are connected to a power supply control module provided outside the tooling housing through electric wires.

2. The corrosion test tooling for simulating the actual usage environment of the air conditioner circuit board according to claim 1, wherein: The heating module of the simulated compressor housing is any one or more of an electric heating sheet, an electric heating patch or an electric heating tape.

3. The corrosion test tooling for simulating the actual use environment of the air conditioner circuit board according to claim 1, wherein: The surface of the simulated heating pipe group is coated with a heat-conducting and anti-corrosion layer.

4. The corrosion test tooling for simulating the actual use environment of the air conditioner circuit board according to any one of claims 1 to 3, characterized in that: A temperature sensor is provided in the temperature control area of the simulated compressor housing and / or the temperature control area of the simulated heating pipe group.

5. The corrosion test tooling for simulating the actual use environment of the air conditioner circuit board according to claim 1, characterized in that: The fans or jet pipes of the air flow simulation component are arranged at positions on the tooling housing where there are openings or gaps.

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