Detection method and detection system of memory alloy type self-adjusting mechanism

Abstract

The invention relates to a detection method and a detection system for a memory alloy type self-adjusting mechanism. The detection method of the memory alloy type self-adjusting mechanism comprises the steps that the self-adjusting mechanism is provided, the self-adjusting mechanism comprises a core pipe and component parts arranged in the core pipe, and the core pipe comprises an observation area enabling at least part of the component parts in the core pipe to be exposed so that the component parts can be directly observed; putting the self-adjusting mechanism and the corresponding heat exchanger into a heat-insulated test chamber; the air inlet air path is connected into the refrigeration working air path, and ventilation is conducted on the heat exchanger to start refrigeration; and the measurement module measures the deformation and / or displacement of the components in the self-adjusting mechanism through the transparent outer wall on the test chamber and obtains a detection result. According to the detection method of the memory alloy type self-adjusting mechanism, the condition of components in the core tube can be directly measured, the result can be obtained without adopting modes such as estimation, the result accuracy is ensured, the difficulty of process debugging is reduced, and the quality control of a refrigerator is better.

Description

Technical Field

[0001] The invention relates to the field of low-temperature refrigeration, and in particular to a detection method and a detection system for a memory alloy type self-adjusting mechanism. Background Art

[0002] The self-adjusting mechanism is one of the key structures for controlling the throttling flow of the self-adjusting refrigerator. In recent years, domestic and foreign scholars have conducted a lot of research on the structural parameters and operating parameters that affect the performance of the self-adjusting mechanism. However, the existing research results have not effectively solved the problem of poor stability such as intermittent liquid spraying of the refrigerator caused by the unreasonable design of the self-adjusting mechanism. Especially when the gas cylinder is the gas source, as the pressure in the bottle gradually decreases, the position of the refrigerator valve needle changes continuously with the intake pressure and the movement of the self-adjusting mechanism, resulting in instability problems such as flow reduction and even flow fluctuation.

[0003] Because the self-adjusting mechanism is located in the sealed cavity at the center of the refrigerator, its valve needle opening cannot be tested. The position of the self-adjusting structure can only be adjusted by the nut on one side, and the valve needle position can be roughly estimated by combining the stiffness of the three springs of the self-adjusting structure. The relationship between the opening and the flow value of the refrigerator cannot be analyzed. Especially for refrigerators with fluctuating flow, the motion state of the self-adjusting structure cannot be obtained, which makes the flow of the refrigerator easy to exceed the tolerance and the process debugging difficult. In addition, the self-adjusting mechanism is wrapped with multiple layers of finned tubes on the outside, and there are many metal structures. The internal operation cannot be analyzed by equipment such as industrial CT. At the same time, its internal temperature is unknown, and the temperature requirements of the phase change point of the memory alloy spring cannot be analyzed. Therefore, due to the instability of the internal state of the self-adjusting mechanism and the difficulty in testing and debugging, it is easy to cause the instability of the refrigerator operation. Summary of the invention

[0004] The purpose of the present invention is to provide a detection method and detection system for a memory alloy self-adjusting mechanism, so as to solve the problem that the internal state of the self-adjusting mechanism is unstable and difficult to test and debug, which easily leads to the unstable operation of the refrigerator.

[0005] The detection method of the memory alloy self-adjusting mechanism of the present invention comprises:

[0006] A self-adjusting mechanism is provided, the self-adjusting mechanism comprising a core tube, components arranged in the core tube, the core tube comprising an observation area that allows at least part of the components in the core tube to be exposed so as to be directly observed;

[0007] The self-adjusting mechanism and the corresponding heat exchanger are placed in a heat-insulated test chamber; the test chamber is used to accommodate the self-adjusting mechanism and has a chamber entrance and a transparent outer wall; the chamber entrance is used for the self-adjusting mechanism and the corresponding heat exchanger to be placed in the test chamber; the self-adjusting mechanism inside the test chamber can be observed through the transparent outer wall;

[0008] Connecting the air inlet circuit to the refrigeration working circuit to ventilate the heat exchanger to start refrigeration;

[0009] The deformation and / or displacement of the component parts in the self-adjusting mechanism are measured through the transparent outer wall of the test chamber by a measuring module to obtain a test result.

[0010] Optionally, the observation area includes a hollow area opened on the core tube.

[0011] Optionally, before connecting the air inlet circuit to the refrigeration working circuit and ventilating the heat exchanger, the method further comprises:

[0012] An isolation structure is provided, and the isolation structure is located between the air inlet path and the inner wall of the test chamber to fill the gap between the air inlet path and the test chamber.

[0013] Optionally, measuring the deformation or displacement of the component parts in the self-adjusting mechanism through the transparent outer wall of the test chamber by a measuring module and obtaining the test result includes:

[0014] Measuring the opening of the valve needle in the self-adjusting mechanism by means of a measuring module;

[0015] The flow rate of the refrigeration working gas circuit and the opening degree of the valve needle at the corresponding flow rate are recorded to obtain the relationship between the flow rate and the opening degree of the valve needle.

[0016] Optionally, measuring the deformation or displacement of the component parts in the self-adjusting mechanism through the transparent outer wall of the test chamber by a measuring module and obtaining the test result includes:

[0017] Measuring the position of the target part in the self-adjusting mechanism by a measuring module;

[0018] Determining the deformation amount of the target part according to the position of the target part and its initial position;

[0019] The intake pressure and flow rate are recorded to obtain the relationship between the deformation amount of the target part and the intake pressure and flow rate.

[0020] Optionally, a temperature sensor device is also provided in the test chamber;

[0021] After the air inlet gas circuit is connected to the refrigeration working gas circuit and the heat exchanger is ventilated, the method further includes:

[0022] The temperature in the test chamber is acquired and recorded by the temperature sensor.

[0023] Optionally, measuring the deformation or displacement of the component parts in the self-adjusting mechanism through the transparent outer wall of the test chamber by a measuring module and obtaining the test result includes:

[0024] Monitoring the position of the memory alloy spring in the self-adjusting mechanism by means of a measuring module;

[0025] When the position of the memory alloy spring changes, the recorded temperature value is the phase change point of the memory alloy spring.

[0026] Optionally, the outer wall of the test chamber includes any of the following structures:

[0027] The outer wall comprises a sealing interlayer and a heat insulating material arranged in the sealing interlayer;

[0028] The outer wall comprises an outer wall body and a heat insulation layer arranged on the outer wall body;

[0029] The outer wall is made of heat insulating material.

[0030] Optionally, the measuring module includes at least one of an optical displacement measuring instrument and an image acquisition device.

[0031] On the other hand, the present invention also provides a detection system for a memory alloy self-adjusting mechanism, comprising:

[0032] A self-adjusting mechanism to be tested, the self-adjusting mechanism comprising a core tube and components disposed in the core tube, the core tube comprising an observation area that allows at least part of the components in the core tube to be exposed so as to be directly observed;

[0033] an insulated test chamber, the test chamber being used to accommodate the self-adjusting mechanism and having a chamber entrance and a transparent outer wall; the chamber entrance being used for allowing the self-adjusting mechanism and a corresponding heat exchanger to be placed in the test chamber; the self-adjusting mechanism inside the test chamber being observable through the transparent outer wall;

[0034] A heat exchanger and a refrigeration working gas circuit cooperating with the self-adjusting mechanism;

[0035] A measuring module is used to measure the deformation and / or displacement of the component parts in the self-adjusting mechanism through the transparent outer wall of the test chamber.

[0036] The detection method of the memory alloy type self-adjusting mechanism of the present invention simulates the refrigeration working condition by placing the self-adjusting mechanism and the corresponding heat exchanger in a heat-insulated test chamber for ventilation operation; and an observation area is arranged on the core tube of the self-adjusting mechanism, and the transparent outer wall of the test chamber is used to realize direct observation of the components in the core tube from the outside. The test data is made closer to the use environment of the refrigerator, which is beneficial to the design and analysis of the memory alloy type refrigerator, and the operation is simple and fast. Moreover, the conditions of the components in the core tube can be directly measured, and there is no need to use estimation and other methods to obtain the results, which ensures the accuracy of the results, reduces the difficulty of process debugging, and makes the quality control of the refrigerator better. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a basic flow chart of the detection method of the memory alloy type self-adjusting mechanism of this embodiment;

[0038] Figure 2 This is a schematic diagram of the internal structure of the memory alloy self-adjusting mechanism of this embodiment when it is being tested;

[0039] Figure 3 A schematic diagram of a hollowed-out core tube of a memory alloy self-adjusting mechanism of this embodiment;

[0040] Figure 4 It is a schematic diagram of the memory alloy self-adjusting mechanism of this embodiment being loaded into a test chamber before testing;

[0041] Figure 5 for Figure 4 Schematic diagram after refrigeration;

[0042] Figure 6 is a schematic diagram of a measurement module of this embodiment;

[0043] Figure 7 The detailed process diagram of the detection method of the memory alloy self-adjusting mechanism of this embodiment is as follows Figure 1 ;

[0044] Figure 8 The detailed process diagram of the detection method of the memory alloy self-adjusting mechanism of this embodiment is as follows Figure 2 ;

[0045] Fig. 9 The detailed process diagram of the detection method of the memory alloy self-adjusting mechanism of this embodiment is as follows Figure 3 ;

[0046] Description of reference numerals:

[0047] 1-intake air path; 2-isolation structure; 3-heat exchanger; 4-test chamber; 5-valve body; 6-throttle hole; 7-balance spring; 8-memory alloy spring; 9-valve needle; 10-active spring; 11-opening spiral rod; 12-temperature sensor; 13-core tube; 14-observation area; 15-refrigeration working air path; 16-measurement module; 17-screen. DETAILED DESCRIPTION

[0048] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0049] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0050] Embodiment 1:

[0051] This embodiment provides a detection method for a memory alloy self-adjusting mechanism, which is aimed at the problem that it is difficult to test and debug a memory alloy refrigerator and it is difficult to obtain accurate detection results. Figure 1 As shown, the method of this embodiment includes but is not limited to the following steps:

[0052] S101, providing a self-adjusting mechanism, the self-adjusting mechanism comprising a core tube and components arranged in the core tube, the core tube comprising an observation area that allows at least part of the components in the core tube to be exposed so as to be directly observed;

[0053] The core tube 13 of the self-adjusting mechanism is a structure for accommodating its components, and has a cavity inside to place the components. In this embodiment, the core tube 13 of the self-adjusting mechanism also has an observation area 14, which is used to expose at least part of the components in the core tube 13 so that they can be directly observed.

[0054] In some embodiments, the observation area 14 may be a hollow area opened on the core tube 13, which may be one or more hollowed-out parts, so that one or more components can be seen. In some other embodiments, the observation area 14 may also be an area provided with a transparent material, which allows at least some of the components in the core tube 13 to be seen. Of course, the core tube 13 of the self-adjusting mechanism may also be configured to be transparent as a whole, so that the whole is the observation area 14, and all components can be seen.

[0055] See also Figure 2 As shown, the components of the self-adjusting mechanism mainly include a memory alloy spring 8, an active spring 10, a balance spring 7, a valve needle 9 and a valve body 5. In practical applications, the self-adjusting mechanism can also be implemented in other structures, and this embodiment does not limit other structural components and forms of the self-adjusting mechanism. Figures 3 to 5 As shown, a portion of the core tube 13 is hollowed out to form a hollow structure as an observation area 14, in which at least some of the components can be seen, thereby meeting the measurement requirements. Figure 4 and Figure 5 It can be seen that after refrigeration, the components in the self-adjusting mechanism undergo deformation and displacement, which can be directly observed.

[0056] Since the memory alloy type self-adjusting mechanism uses a device made of memory alloy material, the contraction amount of each memory alloy spring is inconsistent, so its accurate state is difficult to estimate, and the subsequent debugging process is difficult. Through the detection method of the memory alloy type self-adjusting mechanism of the present invention, the state of the components in the self-adjusting mechanism in the working state can be reliably and effectively measured, thereby providing reliable data support for subsequent debugging.

[0057] S102, placing the self-adjusting mechanism and the corresponding heat exchanger into a heat-insulated test chamber;

[0058] The test chamber 4 is used to accommodate the self-adjusting mechanism and the corresponding heat exchanger 3 and has a chamber entrance and a transparent outer wall. The chamber entrance is used for the self-adjusting mechanism and the corresponding heat exchanger 3 to be placed in the test chamber 4. The self-adjusting mechanism inside the test chamber 4 can be observed through the transparent outer wall.

[0059] The heat exchanger 3 is compatible with the self-adjusting mechanism, and the test chamber 4 also matches the heat exchanger 3 and the self-adjusting mechanism. In practical applications, the structure of the heat exchanger 3 with different inner diameters and fins can be set, and the test chamber 4 matching the shape of the heat exchanger 3 and the self-adjusting mechanism is adopted to meet the test requirements of different intake pressures and flows.

[0060] S103, connecting the air inlet path to the refrigeration working path to ventilate the heat exchanger;

[0061] After the air inlet path 1 of the heat exchanger 3 is connected to the refrigeration working gas path 15, a high-pressure fluid can be introduced for refrigeration. The refrigeration working gas path 15 is a gas path that can be passed through a high-pressure fluid, wherein the high-pressure fluid includes but is not limited to nitrogen, argon and other fluids that can be used for refrigeration, and its pressure range can be 15MPa to 50MPa, for example. When the high-pressure fluid is passed through for refrigeration, the self-adjusting mechanism will enter the working state. At this time, it is equivalent to simulating the normal operation of the refrigerator.

[0062] S104, measuring the deformation or displacement of the components in the self-adjusting mechanism through the transparent outer wall of the test chamber by a measuring module and obtaining a test result;

[0063] Since the outer wall of the test chamber 4 is transparent and there is an observation area 14 on the core tube 13, the state of the components in the core tube 13 can be directly seen from the outside. The deformation or displacement of the components therein can be measured by an optical measuring instrument.

[0064] The measuring module 16 may include various optical measuring instruments to achieve measurement without contact. In this embodiment, the measuring module 16 includes at least one of an optical displacement measuring instrument and an image acquisition device. For example, it may include a CCD (charge coupled device) camera or other cameras, a displacement amplification instrument, a distance testing device using the principle of an optical lever, etc. The measurement of deformation and / or displacement can be achieved by taking pictures or other principles. The methods of measuring by the measuring module 16 include, but are not limited to, recognition by taking images, optical lever amplification, laser ranging, etc.

[0065] like Figure 6 As shown, in this embodiment, the test chamber 4 loaded with the self-adjusting mechanism can be placed on the workbench corresponding to the measuring module 16, and the test chamber 4 can be fixed so that the measuring module 16 can accurately align with the self-adjusting mechanism therein for measurement. The measuring module 16 can be connected to a computer to record the measurement data in the computer, and can display the captured image and / or the measured data through the screen 17.

[0066] It can be seen that the detection method of the memory alloy type self-adjusting mechanism of the present embodiment simulates the refrigeration working condition by placing the self-adjusting mechanism and the corresponding heat exchanger 3 into the heat-insulated test chamber 4 for ventilation; and an observation area 14 is arranged on the core tube 13 of the self-adjusting mechanism, and the transparent outer wall of the test chamber 4 is used to directly observe the components in the core tube 13 from the outside. The test data is made closer to the use environment of the refrigerator, which is beneficial to the design and analysis of the memory alloy type refrigerator, and the operation is simple and fast. And the components in the core tube 13 can be directly measured, and there is no need to use estimation and other methods to obtain the results, which ensures the accuracy of the results, reduces the difficulty of process debugging, and makes the quality control of the refrigerator better.

[0067] In some embodiments, the air inlet path 1 is connected to the refrigeration working air path 15, and before the heat exchanger 3 is ventilated, it also includes: setting an isolation structure 2, the isolation structure 2 is located between the air inlet path 1 and the inner wall of the test chamber 4, filling the gap between the air inlet path 1 and the test chamber 4.

[0068] The isolation structure 2 is located between the air inlet path 1 and the inner wall of the test chamber 4, filling the gap between the air inlet path 1 and the test chamber 4. The isolation structure 2 can prevent the low-temperature fluid from flowing out along the wall, resulting in the low-temperature fluid not passing through the heat exchange fins, the heat exchange capacity of the heat exchanger 3 decreasing, and the self-adjusting mechanism failing. By setting the isolation structure 2, the work during the test can be stabilized, closer to the state of actual refrigeration work, and the accuracy of the results can be guaranteed.

[0069] The isolation structure 2 may be pre-set on the inner wall of the test chamber 4 or outside the heat exchanger 3, or may be inserted between the air inlet path 1 and the inner wall of the test chamber 4 to fill the gap after the self-adjusting mechanism and the corresponding heat exchanger 3 are placed in the insulated test chamber 4. In practical applications, the isolation structure 2 may adopt a structure that is conducive to being set against the wall, which has a better isolation effect.

[0070] In some embodiments, see Figure 7 As shown, the deformation or displacement of the components in the self-adjusting mechanism is measured through the transparent outer wall of the test chamber 4 by the measuring module 16 and the test results are obtained, including:

[0071] S201, measuring the opening of the valve needle in the self-adjusting mechanism through a measuring module;

[0072] The opening of the valve needle 9 is the distance from the needle tip of the valve needle 9 to the throttle hole 6. First, tighten the opening screw rod 11, push the valve needle 9 to close the central air hole of the valve body 5, and record the initial position of the valve needle 9. During the ventilation and refrigeration process, the memory alloy spring 8 contracts when it is cold, and the active spring 10 pushes the valve needle 9 to move toward the valve body 5. During this process, the opening of the valve needle 9 will change. The displacement distance of the valve needle 9 can be measured by the measurement module 16 to obtain the opening.

[0073] S202, recording the flow rate of the refrigeration working gas circuit and the opening of the valve needle at the corresponding flow rate, and obtaining the relationship between the flow rate and the opening of the valve needle;

[0074] In some embodiments, see Figure 8 As shown, the deformation or displacement of the components in the self-adjusting mechanism is measured through the transparent outer wall of the test chamber 4 by the measuring module 16 and the test results are obtained, including:

[0075] S301, measuring the position of the target part in the self-adjusting mechanism by a measuring module;

[0076] The target part is the part that needs to be inspected currently. The target part in this example includes but is not limited to the parts that will be deformed, such as the memory alloy spring 8 and the active spring 10.

[0077] S302, determining the deformation amount of the target part according to the position of the target part and its initial position;

[0078] It is understandable that the initial position of the target part can be obtained before the test when the target part has not yet started to deform. The initial position of the target part can be the position of its end face. When the target part is cold and shrinks, the position of the end face of the target part will change. Based on the displacement distance before and after the change, the deformation amount can be obtained.

[0079] S303, recording the intake pressure and flow rate, and obtaining the relationship between the deformation amount of the target part and the intake pressure and flow rate;

[0080] In order to obtain the deformation under different intake pressures and flow rates, the intake pressure and flow rate can be changed during the test and recorded continuously to obtain the relationship between the deformation amount of the target part and the intake pressure and flow rate.

[0081] In some embodiments, a temperature sensor 12 is also provided in the test chamber 4. After the air inlet circuit 1 is connected to the refrigeration working air circuit 15 and the heat exchanger 3 is ventilated, the temperature in the test chamber 4 is obtained and recorded by the temperature sensor 12. The temperature sensor 12 is provided in the test chamber 4, and the temperature condition during the detection process can be obtained, which is conducive to judging whether the refrigeration process is carried out in sequence, and can provide data for the performance detection of the component parts. The temperature sensor 12 can transmit data to the outside in a wired or wireless manner, for example, by connecting to the host computer via a data cable.

[0082] In some embodiments, see Fig. 9 As shown, the deformation or displacement of the components in the self-adjusting mechanism is measured through the transparent outer wall of the test chamber 4 by the measuring module 16 and the test results are obtained, including:

[0083] S401, monitoring the position of the memory alloy spring in the self-adjusting mechanism through a measuring module;

[0084] S402, when the position of the memory alloy spring changes, recording the temperature value as the phase change point of the memory alloy spring;

[0085] It is understandable that if there are other devices made of memory alloy materials, the phase change point detection can also be performed in the same manner as in this embodiment.

[0086] See Table 1 below for test data of the components of the self-adjusting mechanism. As the opening of the valve needle 9 decreases, the flow rate of the refrigerator also decreases, which is consistent with the flow rate reflection phenomenon when the refrigerator is actually working. It can be seen that the detection method of the memory alloy self-adjusting mechanism of this embodiment can effectively achieve the purpose of measuring the opening of the valve needle 9. The problem that the initial state of the opening of the valve needle 9 is fixed but the final opening is unknown due to the difference in deformation of each memory metal device is solved, and the contraction amount and phase change point temperature test function of the memory alloy spring 8 are also realized.

[0087] Table 1

[0088]

[0089] It can be seen that, through the detection method of the memory alloy type self-adjusting mechanism of this embodiment, various parameters of the self-adjusting mechanism can be detected, and various test data can be accurately obtained, providing reliable data support for the subsequent debugging process, thereby improving the stability of the cooling capacity flow of the memory alloy type refrigerator. In practical applications, the deformation and / or displacement of the remaining components in the self-adjusting mechanism can also be measured by the detection method of the memory alloy type self-adjusting mechanism of the present invention, and it is only necessary to provide an observation area 14 at the position corresponding to the component to be detected so that it is exposed and can be observed.

[0090] It should be understood that in actual applications, the detection items can be selected according to the debugging requirements. The measurement methods in the above examples can only adopt at least one of them, or can measure and record multiple data at the same time.

[0091] In some embodiments, the outer wall of the test chamber 4 includes any of the following structures:

[0092] The outer wall comprises a sealing interlayer and a heat insulating material arranged in the sealing interlayer;

[0093] The outer wall comprises an outer wall body and a heat insulation layer arranged on the outer wall body;

[0094] The outer wall is made of heat-insulating material.

[0095] The heat-insulating materials and heat-insulating layers include, but are not limited to, glass dewars, heat-insulating film materials and other heat-insulating materials or structures made of these materials.

[0096] It is understood that no matter what structure the outer wall of the test chamber 4 adopts, it is made of or at least partially made of transparent material to ensure that the self-adjusting mechanism in the test chamber 4 can be seen. It is understood that the transparency referred to in this application means that the transparency is sufficient for the measurement module 16 to measure the deformation and / or displacement of the components of the self-adjusting mechanism therein.

[0097] In addition, an embodiment of the present invention further provides a detection system for a memory alloy self-adjusting mechanism, which includes a self-adjusting mechanism to be tested, the self-adjusting mechanism including a core tube 13, components arranged in the core tube 13, the core tube 13 including an observation area 14 that allows at least part of the components in the core tube 13 to be exposed so as to be directly observed; an insulated test chamber 4, the test chamber 4 is used to accommodate the self-adjusting mechanism and has a chamber entrance and a transparent outer wall; the chamber entrance is used for the self-adjusting mechanism and the corresponding heat exchanger 3 to be placed in the test chamber 4; the self-adjusting mechanism inside the test chamber 4 can be observed through the transparent outer wall; the heat exchanger 3 and the refrigeration working gas path 15 that cooperate with the self-adjusting mechanism; a measuring module 16, the measuring module 16 is used to measure the deformation and / or displacement of the components in the self-adjusting mechanism through the transparent outer wall of the test chamber 4.

[0098] The detection system of the memory alloy self-adjusting mechanism of this embodiment can be used to perform the detection process of the detection method of the memory alloy self-adjusting mechanism. The various structures and their matching relationships therein can refer to the description of the detection method of the memory alloy self-adjusting mechanism, and will not be repeated here.

[0099] In addition, the core tube 13 of the self-adjusting mechanism can be a core tube 13 that is specially used to measure the data of the components therein and is temporarily used. After the detection is completed, these components can be loaded into a new core tube 13, or its hollowed-out area can be processed to increase the stability of the self-adjusting mechanism. Of course, if the core tube 13 used in the detection process does not affect the stability of the self-adjusting mechanism, it can also be directly used.

[0100] Through the detection system of the memory alloy type self-adjusting mechanism, the working state during refrigeration can be simulated, and the displacement and / or deformation of the components in the self-adjusting mechanism during refrigeration can be directly observed, and the measuring module 16 can measure the actual value of the displacement and / or deformation of the components during refrigeration. It can be seen that the detection system of the memory alloy type self-adjusting mechanism of the present embodiment can directly measure the conditions of the components in the core tube 13, without the need to use estimation and other methods to obtain the results, thereby ensuring the accuracy of the results, reducing the difficulty of process debugging, and making the quality control of the refrigerator better.

[0101] In addition, although exemplary embodiments have been described herein, the scope includes any and all embodiments based on the present disclosure that are equivalent, modified, omitted, combined (e.g., various embodiments intersecting), adapted or changed. It is not limited to the examples described in this specification or during the implementation of this application, and its examples will be interpreted as non-exclusive.

[0102] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, those of ordinary skill in the art may use other embodiments when reading the above description.

[0103] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for detecting a memory alloy self-adjusting mechanism, characterized in that: include: A self-adjusting mechanism is provided, the self-adjusting mechanism comprising a core tube, components arranged in the core tube, the core tube comprising an observation area that allows at least part of the components in the core tube to be exposed so as to be directly observed; The self-adjusting mechanism and the corresponding heat exchanger are placed in a heat-insulated test chamber; the test chamber is used to accommodate the self-adjusting mechanism and has a chamber entrance and a transparent outer wall; the chamber entrance is used for the self-adjusting mechanism and the corresponding heat exchanger to be placed in the test chamber; the self-adjusting mechanism inside the test chamber can be observed through the transparent outer wall; Connecting the air inlet circuit to the refrigeration working circuit to ventilate the heat exchanger to start refrigeration; The deformation and / or displacement of the component parts in the self-adjusting mechanism are measured through the transparent outer wall of the test chamber by a measuring module to obtain a test result.

2. The detection method of the memory alloy self-adjusting mechanism according to claim 1, characterized in that: The observation area includes a hollow area opened on the core tube.

3. The detection method of the memory alloy self-adjusting mechanism according to claim 1, characterized in that: Before the air inlet gas circuit is connected to the refrigeration working gas circuit and the heat exchanger is ventilated, the method further comprises: An isolation structure is provided, and the isolation structure is located between the air inlet path and the inner wall of the test chamber to fill the gap between the air inlet path and the test chamber.

4. The detection method of the memory alloy self-adjusting mechanism according to claim 1, characterized in that: The step of measuring the deformation or displacement of the components in the self-adjusting mechanism through the transparent outer wall of the test chamber by a measuring module and obtaining the test result comprises: Measuring the opening of the valve needle in the self-adjusting mechanism by means of a measuring module; The flow rate of the refrigeration working gas circuit and the opening degree of the valve needle at the corresponding flow rate are recorded to obtain the relationship between the flow rate and the opening degree of the valve needle.

5. The detection method of the memory alloy self-adjusting mechanism according to claim 1, characterized in that: The step of measuring the deformation or displacement of the components in the self-adjusting mechanism through the transparent outer wall of the test chamber by a measuring module and obtaining the test result comprises: Measuring the position of the target part in the self-adjusting mechanism by a measuring module; Determining the deformation amount of the target part according to the position of the target part and its initial position; The intake pressure and flow rate are recorded to obtain the relationship between the deformation amount of the target part and the intake pressure and flow rate.

6. The detection method of the memory alloy self-adjusting mechanism according to claim 1, characterized in that: The test chamber is also provided with a temperature sensor device; After the air inlet gas circuit is connected to the refrigeration working gas circuit and the heat exchanger is ventilated, the method further includes: The temperature in the test chamber is acquired and recorded by the temperature sensor.

7. The detection method of the memory alloy self-adjusting mechanism according to claim 6, characterized in that: The step of measuring the deformation or displacement of the components in the self-adjusting mechanism through the transparent outer wall of the test chamber by a measuring module and obtaining the test result comprises: Monitoring the position of the memory alloy spring in the self-adjusting mechanism by means of a measuring module; When the position of the memory alloy spring changes, the recorded temperature value is the phase change point of the memory alloy spring.

8. The detection method of the memory alloy self-adjusting mechanism according to claim 1, characterized in that: The outer wall of the test chamber includes any of the following structures: The outer wall comprises a sealing interlayer and a heat insulating material arranged in the sealing interlayer; The outer wall comprises an outer wall body and a heat insulation layer arranged on the outer wall body; The outer wall is made of heat insulating material.

9. The detection method of the memory alloy self-adjusting mechanism according to claim 1, characterized in that: The measuring module includes at least one of an optical displacement measuring instrument and an image acquisition device.

10. A detection system for a memory alloy self-adjusting mechanism, characterized in that: include: A self-adjusting mechanism to be tested, the self-adjusting mechanism comprising a core tube and components disposed in the core tube, the core tube comprising an observation area that allows at least part of the components in the core tube to be exposed so as to be directly observed; an insulated test chamber, the test chamber being used to accommodate the self-adjusting mechanism and having a chamber entrance and a transparent outer wall; the chamber entrance being used for allowing the self-adjusting mechanism and a corresponding heat exchanger to be placed in the test chamber; the self-adjusting mechanism inside the test chamber being observable through the transparent outer wall; A heat exchanger and a refrigeration working gas circuit cooperating with the self-adjusting mechanism; A measuring module is used to measure the deformation and / or displacement of the component parts in the self-adjusting mechanism through the transparent outer wall of the test chamber.

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