Refrigerator volume testing device
By installing pressure and temperature sensors inside the refrigerator and combining them with an electrolysis module to calculate the volume, the problem of cumbersome and inaccurate refrigerator volume testing in existing technologies is solved, achieving efficient and accurate volume measurement.
Patent Information
- Application Number
- CN202423171823.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-20
AI Technical Summary
Existing methods for testing refrigerator volume are cumbersome and prone to errors, making it impossible to accurately calculate the volume of irregular structures. This leads to inconsistent test results and affects energy efficiency.
A pressure sensor, a temperature sensor, an electrolysis module, and a water level detection module are installed inside the refrigerator. The pressure and temperature are changed by the electrolysis of water, and the volume is calculated using the ideal gas equation. Accurate data is obtained by combining multiple sensors.
It achieves simple and efficient volume testing, with accurate results, unaffected by irregular structures inside the refrigerator, and with high consistency in test results.
Smart Images
Figure CN223551143U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a refrigerator volume testing device. Background Technology
[0002] Refrigerators, as household appliances for food storage, typically require their capacity to be labeled for user information. Both GB8059 and GB12021 standards for refrigerators require volume test data. However, the storage space inside a refrigerator is usually irregular, with irregular ribs, air vents, and other structures. Testing refrigerator volume requires manually measuring the dimensions of each small structure and adding them up, resulting in errors in each measurement. Furthermore, the testing process is tedious and time-consuming, and it's impossible to accurately calculate the volume of irregular structures and the volume of nooks and crannies, leading to large errors in the volume test results. Each laboratory and testing unit's results have a deviation of ±3%, which is detrimental to reflecting product performance and shows poor data consistency. Deviating from the true value in refrigerator volume test results also has a significant impact on the refrigerator's energy efficiency. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a refrigerator volume testing device that is simple to measure, efficient, and accurate in terms of measurement results, in contrast to the above-mentioned prior art.
[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a refrigerator volume testing device, which is installed inside a refrigerator, characterized in that: it includes a power supply module, a control module, and a pressure sensor, a temperature sensor, and a water tank installed in the refrigerator cavity to be tested. The water tank is equipped with an electrolysis module and a water volume detection module for detecting the amount of electrolyzed water.
[0005] The power supply module, air pressure sensor, temperature sensor, electrolysis module, and water volume detection module are all electrically connected to the control module, and the power supply module is also electrically connected to the electrolysis module.
[0006] To obtain more accurate air pressure data, multiple air pressure sensors are provided and movably distributed on the inner wall of the refrigerator's test cavity.
[0007] Preferably, a pressure sensor is installed at the center of the upper, lower, left, right, front, and rear inner walls of the refrigerator cavity to be tested.
[0008] To obtain more accurate temperature data, multiple temperature sensors are provided and are movably distributed on the inner wall of the refrigerator cavity to be tested.
[0009] Preferably, a temperature sensor is installed at the center of the upper, lower, left, right, front, and rear inner walls of the refrigerator cavity to be tested.
[0010] Alternatively, the water volume detection module may be a water level sensor or a weighing sensor.
[0011] In order to facilitate the control of the pressure relief in the test cavity of the refrigerator, facilitate the verification and review of data, and improve the accuracy of test results, the test cavity of the refrigerator is also equipped with a pressure regulating device to adjust the internal air pressure.
[0012] Preferably, it also includes a display that is electrically connected to the control module.
[0013] Compared with the prior art, the advantages of this utility model are as follows: The refrigerator volume testing device of this utility model sets up an electrolysis module in the refrigerator cavity to be tested, thereby electrolyzing water and changing the air pressure and temperature inside the refrigerator. At the same time, air pressure sensors and temperature sensors are set up in the refrigerator cavity to be tested to detect and record the changes in air pressure and temperature before and after water electrolysis. Then, the volume of the refrigerator cavity to be tested is calculated using the ideal gas equation, and the volume measurement result of the refrigerator cavity to be tested is obtained. This testing process does not require manual measurement, the testing process is simple and efficient, and the calculation results are not affected by various complex structures such as irregular ribs and air vents inside the refrigerator, so the test results are more accurate and have high consistency. Attached Figure Description
[0014] Figure 1 This is a block diagram of the refrigerator volume testing device in an embodiment of the present invention. Detailed Implementation
[0015] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0016] like Figure 1 As shown, the refrigerator volume testing device in this embodiment is installed inside the refrigerator. When there are multiple cavities to be tested inside the refrigerator, a corresponding number of refrigerator volume testing devices can be used to test simultaneously, or some components of one refrigerator volume testing device can be moved to complete the volume test of multiple cavities to be tested.
[0017] The refrigerator volume testing device includes a power supply module 1, a control module 2, and a pressure sensor 3, a temperature sensor 4, and a water tank 5 installed inside the refrigerator's test cavity. The water tank 5 contains an electrolysis module 6 and a water volume detection module 7 for detecting the amount of water electrolyzed. The power supply module 1, pressure sensor 3, temperature sensor 4, electrolysis module 6, and water volume detection module 7 are all electrically connected to the control module 2. The power supply module 1 is also electrically connected to the electrolysis module 6.
[0018] When testing the refrigerator volume, the power supply module 1 can supply power to the electrolysis module 6 according to the control signal of the control module 2. When the electrolysis module 6 is energized, it electrolyzes water, thereby releasing oxygen and hydrogen. The pressure and temperature in the refrigerator cavity under test will change accordingly. The pressure sensor 3 and temperature sensor 4 installed in the refrigerator cavity under test can effectively detect the pressure and temperature data after water electrolysis. The volume of the refrigerator cavity under test can be calculated using the ideal gas equation.
[0019] However, the water mass that needs to be electrolyzed during the calculation of the refrigerator's test cavity volume using the ideal gas equation is crucial. The water volume detection module 7 on the water tank 5 is used to acquire this mass of electrolyzed water during the test. In use, during the refrigerator volume test, the real-time feedback from the water volume detection module 7 on the decrease in water volume controls the stopping of the electrolysis module 6, thus precisely controlling the electrolyzed water volume to a set fixed amount. The water volume detection module 7 can be equipped with sensors based on different principles for water volume detection, such as a water level sensor or a weighing sensor. When using a water level sensor, it is placed inside the water tank 5; a float-type water level sensor can be used to detect real-time dynamic changes in water volume. When using a weighing sensor, it is placed at the bottom of the water tank 5, and the amount of water to be electrolyzed is determined by detecting changes in weight.
[0020] Furthermore, since the amount of oxygen and hydrogen released after water electrolysis varies slightly at different locations within the refrigerator's test cavity, multiple pressure sensors 3 are movably distributed on the inner wall of the test cavity to obtain more accurate pressure and temperature data. Because the test cavity of a refrigerator is typically close to a cube, one pressure sensor 3 can be placed at the center of each of the upper, lower, left, right, front, and rear inner walls of the test cavity. Similarly, multiple temperature sensors 4 are movably distributed on the inner wall of the test cavity, specifically one temperature sensor 4 at the center of each of the upper, lower, left, right, front, and rear inner walls of the test cavity.
[0021] Before testing, all removable components and parts not counted in the volume calculation inside the refrigerator were disassembled according to standards. Due to the presence of air ducts, these ducts needed to be sealed with putty to prevent hydrogen and oxygen produced by water electrolysis from leaking out through internal gaps. After testing began, the electrolysis module 6 was controlled to perform water electrolysis. During the test, the pressure inside the refrigerator's test cavity increased as water electrolyzed. To ensure accurate calculations, multiple preset pressure values were set. Each preset pressure value was held for a period of time after reaching it, allowing the data to stabilize before calculation. The results of each preset pressure value were then calculated using certain methods, such as averaging, to obtain a more accurate volume value. Then, the pressure inside the refrigerator cavity to be tested needs to be released. In order to effectively control the depressurization process, in this embodiment, a pressure regulating device 8 is also provided inside the refrigerator cavity to adjust the internal air pressure. The pressure regulating device 8 can be an existing product. In order to further improve the accuracy of the test results, the data can also be verified and checked during the depressurization process. For this purpose, the pressure regulating device 8 can be a pressure regulating device 8 with pressure detection. During the depressurization process, the air pressure inside the refrigerator cavity to be tested is maintained at each preset air pressure value according to the order of air pressure decrease. At the same time, the air pressure data and temperature data under the corresponding conditions are collected, and the volume of the refrigerator cavity to be tested is recalculated using the ideal gas equation.
[0022] In order to understand the changes in various data within the refrigerator's test cavity in real time during the measurement process, and to view the calculation results intuitively and directly, the refrigerator volume testing device also includes a display 9 connected to the control module 2 via electrical signals. The display 9 can display various process data during the test, and at the end of the measurement, it can also display the volume calculation result of the refrigerator's test cavity for that test.
[0023] The refrigerator volume testing device of this utility model uses an electrolysis module 6 installed inside the refrigerator cavity to electrolyze water, thereby changing the air pressure and temperature inside the refrigerator. Simultaneously, an air pressure sensor 3 and a temperature sensor 4 are installed inside the refrigerator cavity to detect and record the changes in air pressure and temperature before and after water electrolysis. The volume of the refrigerator cavity is then calculated using the ideal gas equation, yielding the volume measurement result. This testing process requires no manual measurement, is simple and efficient, and the calculation results are not affected by irregular ribs, air vents, or other complex structures inside the refrigerator, resulting in more accurate and consistent test results.
[0024] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of the invention. However, the use of these terms is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.
Claims
1. A refrigerator volume testing device, installed inside a refrigerator, characterized in that: It includes a power supply module (1), a control module (2), and a pressure sensor (3), a temperature sensor (4), and a water tank (5) installed in the test cavity of the refrigerator. The water tank (5) is equipped with an electrolysis module (6) and a water volume detection module (7) for detecting the amount of electrolyzed water. The power supply module (1), air pressure sensor (3), temperature sensor (4), electrolysis module (6), and water detection module (7) are all electrically connected to the control module (2), and the power supply module (1) is also electrically connected to the electrolysis module (6).
2. The refrigerator volume testing device according to claim 1, characterized in that: The pressure sensors (3) are provided in multiple and movable arrangement on the inner wall of the refrigerator cavity to be tested.
3. The refrigerator volume testing device according to claim 2, characterized in that: A pressure sensor (3) is installed at the center of the upper, lower, left, right, front, and rear inner walls of the refrigerator cavity to be tested.
4. The refrigerator volume testing device according to claim 1, characterized in that: The temperature sensors (4) are provided in multiple and are movably distributed on the inner wall of the refrigerator cavity to be tested.
5. The refrigerator volume testing device according to claim 4, characterized in that: A temperature sensor (4) is installed at the center of the upper, lower, left, right, front, and rear inner walls of the refrigerator cavity to be tested.
6. The refrigerator volume testing device according to any one of claims 1 to 3, characterized in that: The water volume detection module (7) is a water level sensor or a weighing sensor.
7. The refrigerator volume testing device according to any one of claims 1 to 3, characterized in that: The refrigerator is also equipped with a pressure regulating device (8) to regulate the internal air pressure in the test cavity.
8. The refrigerator volume testing device according to any one of claims 1 to 3, characterized in that: It also includes a display (9) that is electrically connected to the control module (2).